Tm-9-1240-380-34

Transcript

TM 9-1240-380-34 TECHNICAL DIRECT MANUAL SUPPORT GENERAL SUPPORT MAINTENANCE VOLUME I VOLUME - II M36E1 MANUAL TROUBLESHOOTING - MAINTENANCE PERISCOPE, M36 AND TANK: (1240-00-980-9291) (1240-00-348-8441) HEADQUARTERS, DEPARTMENT May 1985 OF THE ARMY TM 9-1240-380-34 WARNING IMAGE INTENSIFIER TUBES CONTAIN RADIOACTIVE MATERIAL Take these steps to avoid injury: 1. Never place radioactive tubes in your pocket. 2. Use extreme care not to break tubes while handling them. 3. Never remove radioactive tubes from cartons until ready to use them. Take these steps if tube is broken: 1. Avoid personal contact with broken tubes. 2. See qualified medical personnel and notify radiological protection officer. 3. For first aid instructions, see TB 43-0116 and TB MED 232. 4. For instruction on handling, storage and disposal of radioactive material, see TB 43-0122 and AR 755-15. Use extreme care when handling image intensifier tube. This tube contains radioactive materials and can be dangerous when broken. a TM 9-1240-380-34 WARNING HIGH VOLTAGE CAN KILL YOU. BODY ASSEMBLY, INFRARED BODY ASSEMBLY, AND ELBOW ASSEMBLY CONTAINS HIGH VOLTAGE CONNECTIONS Take these steps to avoid injury: 1. Do not contact high voltage connection when operating the body assemblies and elbow assembly. 2. After power is turned off, always ground high voltage connections. For artificial respiration, see FM 21-11. CLEANING SOLVENT CAN CAUSE FIRES Cleaning solvents and the fumes from cleaning solvents can catch fire. Keep it and all materials that can catch on fire away from flames. Use only in a room with a lot of fresh air. NITROGEN GAS UNDER PRESSURE DEATH or severe injury may result if personnel fail to observe safety precautions listed in Job Performance Guide 113-091-9000R, b/(c blank) *TM 9-1240-380-34 HEADQUARTERS, DEPARTMENT OF THE ARMY Technical Manual No. 9-1240-380-34 Washington, D. C., 13 May 1985 TECHNICAL MANUAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL PERISCOPE, TANK: M36 (1240-00-980-9291) M36EI (1240-00-348-8441) REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improve this manual. If you find any mistakes or if you know of a way to improve the procedures, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to Publications and Blank Forms), or DA Form 2028-2 located in the back of this manual directly to: Commander U.S. Army Armament, Munitions and Chemical Command ATTN: AMSMC-MAS Rock Island, IL 61299-6000 A reply will be furnished to you. * This manual supersedes TM 9-1240-380-34, 13 December 1977 and TM 9-1240-314-34, 23 June 1984. i TM 9-1240-380-34 TABLE OF CONTENTS Paragraph Page HOW TO USE THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VOLUME I TROUBLESHOOTING x CHAPTER 1. 1-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Organization . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How to Troubleshoot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample Fault Isolation Procedure . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . CHAPTER 2 1-1 1-2 1-3 1-4 1-5 2-1 CHECKOUT PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Head Assembly Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Body Assembly Checkout . . . . . . . . . . . .. . .. . . . . . . . . . . . . . . . . . . . . . . . Infrared Body Assembly Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elbow Assembly Checkout . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 1-1 1-1 1-2 1-4 1-4 2-1 2-2 2-3 2-4 2-5 2-1 2-2 2-6 2-16 2-28 CHAPTER 3. FAULT SYMPTOM INDEX . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 CHAPTER 4. FAULT ISOLATION PROCEDURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Section 1. General . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fault Isolation Procedure Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-1 4-1 Section 2. Section 3. Section 4. ii Head Assembly Fault Isolation Procedures . . . . . . . . . . . . . . . . . . . Cannot See Clearly or Pressure Cannot Be Held in Head Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Body Assembly Fault Isolation Procedures . . . . . . . . . . . . . . . . . . . . . .. Cannot See Clearly or Pressure Cannot Be Held in Body Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrared Body Assembly Fault Isolation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dim. Blinking or No Green Field of View When Power is On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reticle Does Not Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrared Body Assembly Does Not Operate On Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pressure Cannot Be Held in Infrared Body Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-2 4-1 4-3 4-1 4-5 4-4 4-6 4-11 4-5 4-6 4-11 4-24 4-7 4-30 4-8 4-34 TM 9-1240-380-34 Paragraph Section 5. APPENDIX A. Elbow Assembly Fault Isolation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image is Bright When Shutter Assembly Switch is Off Image Flickers or Cannot Be Seen or Brightness Cannot Be Controlled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reticle Cannot Be Seen or Brightness Cannot Be Controlled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No Image or Reticle When Using M30 Instrument Light Electrical Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pressure Cannot Be Held in Elbow Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41 4-9 4-41 4-10 4-43 4-11 4-64 4-12 4-74 4-13 4-79 A-1 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M36 Electrical Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M36 Electrical Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M36E1 Electrical Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M36E1 Electrical Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page A-1 A-2 A-3 A-4 A-1 A-2 A-3 A4 VOLUME II MAINTENANCE CHAPTER 1. 1-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-2 1-1 1-1 1-1 Section 2. Description and Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tabulated Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Differences Between Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1-4 1-5 1-2 1-2 1-4 1-5 CHAPTER 2. 2-1 GENERAL MAINTENANCE INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . Section 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2-1 2-1 Section 2. Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Painting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sealing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2-3 2-4 2-5 2-6 2-1 2-1 2-1 2-1 2-1 2-1 Section 3. Safety Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2-1 2-1 Section 4. Special Tools and Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tools and Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 2-2 2-2 CHAPTER 3. INSPECTION UPON RECEIPT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 iii TM 9-1240-380-34 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inspection Upon Receipt Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Head Assembly Inspection Upon Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Body Assembly Inspection Upon Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrared Body Assembly Inspection Upon Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elbow Assembly Inspection Upon Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHAPTER 4. HEAD ASSEMBLY MAINTENANCE PROCEDURES . . . . . . . . . . . . Section 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . List of Head Assembly Items Contained in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2. Section 3. Section 4. Section 5. Section 6. iv Valve Stem and Valve Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paragraph Page 3-1 3-1 3-2 3-3 3-4 3-1 3-2 3-10 3-5 3-6 3-22 3-32 4-1 4-1 4-1 4-1 4-2 4-1 4-3 4-3 4-4 4-5 4-3 4-3 44 Arm Assembly and Packing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arm Assembly and Packing Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arm Assembly and Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arm Assembly and Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 4-7 4-8 4-6 4-6 4-8 Hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hooks Maintenance Procedure Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hooks Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hooks Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9 4-10 4-11 4-10 4-10 4-10 4-12 Window and Preformed Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Window and Preformed Packing Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Window and Preformed, Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Window and Preformed Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screw (Machine Thread Plug) and Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screw (Machine Thread Plug) and Gasket Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screw (Machine Thread Plug) and Gasket Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screw ( Machine Thread Plug) and Gasket Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 4-14 4-12 4-14 4-13 4-14 4-14 4-16 4-18 4-15 4-18 4-16 4-18 4-17 4-19 TM 9-1240-380-34 Paragraph Section 7. Plate Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plate Assembly Maintenance Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plate Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plate Assembly Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plate Assembly Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plate Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHAPTER 5. BODY ASSEMBLY MAINTENANCE PROCEDURES . . . . . . . . . . . . Section 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . List of Body Assembly Items Contained in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2. Page 4-20 4-18 4-19 4-20 4-21 4-22 4-20 4-20 4-22 4-23 4-24 5-1 5-1 5-1 5-1 5-2 5-1 5-2 Housing Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing Packing Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 5-4 5-5 5-2 5-2 5-4 Section 3. Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 5-7 5-8 5-6 5-6 5-6 5-8 Section 4. Strike . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Strike Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Strike Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Strike Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 5-10 5-11 5-10 5-10 5-10 5-11 Section 5. Housing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing Assembly Maintenance Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 6. Section 7. Deflection Knob Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Deflection Knob Assembly Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Deflection Knob Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . Deflection Knob Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elevation Knob Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elevation Knob Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elevation Knob Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elevation Knob Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 5-12 5-13 5-14 5-12 5-12 5-13 5-14 5-16 5-145-14 5-17 5-16 5-15 5-18 5-18 5-19 5-18 5-18 5-20 5-20 v TM 9-1240-380-34 Paragraph Section 8. Section 9. CHAPTER 6. Section 1. Section 2. Section 3. Valve Stem and Valve Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cell Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cell Assembly Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cell Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cell Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plunger, Spring, Retaining Ring, and Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plunger, Spring, Retaining Ring, and Key Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plunger, Spring, Retaining Ring, and Key Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plunger, Spring, Retaining Ring, and Key Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 4. Section 5. vi 5-22 5-21 5-22 5-23 Eyepiece Assembly Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Scale Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Scale Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Scale Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cap Assembly, Electron Tube and Collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cap Assembly, Electron Tube and Collar Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cap Assembly, Electron Tube and Collar Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cap Assembly, Electron Tube and Collar Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22 5-22 5-24 5-26 5-24 5-25 5-26 INFRARED BODY ASSEMBLY ( M36 ) MAINTENANCE PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . List of Infrared Body Assembly Items Contained in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5-26 5-26 5-30 6-1 6-1 6-1 6-1 6-2 6- I 6-2 6-3 6-4 6-5 6-2 6-2 6-4 6-6 6-6 6-6 6-7 6-6 6-8 6-8 6-10 6-9 6-10 6-11 6-10 6-10 6-12 6-16 6-12 6-16 6-13 6-16 6-14 6-18 TM 9-1240-380-34 Paragraph Section 6. Section 7. Section 8. Section 9. Section 10. Section 11. Section 12. Cap Assembly, Converter, and Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cap Assembly, Converter, and Power Supply Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cap Assembly, Converter, and Power Supply Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cap Assembly, Converter, and Power Supply Assembly and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protective Plug, Clamp, Wire, Sleeve Asembly, Contact (Electrical), and Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protective Plug, Clamp, Wire, Sleeve Assembly, Contact (Electrical), and Connector Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protective Plug, Clamp, Wire, Sleeve Assembly, Contact (Electrical), and Connector Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protective Plug, Clamp, Wire, Sleeve Assembly, Contact (Electrical), and Connector Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6-22 6-15 6-22 6-16 6-22 6-17 6-24 6-27 6-18 6-27 6-19 6-27 6-20 6-33 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21 6-22 6-23 Valve Stem and Valve Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39 6-39 6-39 6-42 6-44 6-24 6-25 6-26 6-44 6-44 6-46 Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27 6-28 6-29 6-48 6-48 6-48 6-49 Contact (Electrical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contact (Electrical) Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contact (Electrical) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contact (Electrical) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lampholder and Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lampholder and Packing Maintenance Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lampholder and Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lampholder and Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50 6-30 6-31 6-32 6-50 6-50 6-52 6-54 6-33 6-34 6-35 6-54 6-54 6-56 vii TM 9-1240-380-34 Paragraph Section 13. CHAPTER 7 Section 1. Section 2. Section 3. Section 4. Section 5. Section 6. Section 7. viii Boresight Knob Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knob Assembly Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knob Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knob Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6-58 6-36 6-37 6-38 ELBOW ASSEMBLY (M36E1) MAINTENANCE PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-58 6-58 6-60 7-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 List of Elbow Assembly Items Contained 7-2 in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 7-1 Plunger, Strike and Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plunger, Strike and Key Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plunger, Strike and Key Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plunger, Strike and Key Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Image Intensifier Assembly and Eyepiece Assembly Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image Intensifier Assembly and Eyepiece Assembly Packing Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image Intensifier Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Eyepiece Assembly Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image Intensifier Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Regulator Assembly Maintenance Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Regulator Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Regulator Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch Assembly Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3 7-4 7-5 7-1 7-2 7-2 7-4 7-7 7-6 7-7 7-8 7-9 7-10 7-10 7-12 7-14 7-11 7-12 7-13 7-14 7-14 7-16 7-18 7-14 7-15 7-16 7-18 7-18 7-20 7-22 Valve Stem and Valve Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17 7-18 7-19 7-22 7-22 7-24 Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20 7-21 7-12 7-26 7-26 7-26 7-27 TM 9-1240-380-34 Paragraph Section 8. Section 9. CHAPTER 8. Lampholder and Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lampholder and Packing Maintenance Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lampholder and Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lampholder and Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knobs Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knobs Assembly Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knobs Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knobs Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHAPTER 9. APPENDIX A. EXPENDABLE SUPPLIES AND MATERIALS LIST . . . . . . . . . . . . . . Section 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Explanation of Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 2. Expendable Supplies and Materials 7-26 7-27 7-28 7-32 7-32 7-34 8-1 8-1 8-2 8-3 8-1 8-2 8-4 8-4 8-5 8-6 8-7 8-8 8-9 8-7 8-10 8-12 8-14 8-16 8-18 9-1 9-1 9-1 9-2 9-1 9-3 9-4 9-1 9-1 A-1 A-1 A-2 A-1 A-1 A-1 A-2 B-1 MAINTENANCE TASK INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 B-2 B-1 B-2 C-1 FABRICATED TOOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tube Extractor Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28 7-28 7-30 7-32 .................................................... Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance Task Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX C. 7-23 7-24 7-25 PACKAGING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. Preparation for Packaging of Optical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Packaging of Head Assembly, Body Assembly, Infrared Body Assembly ( M36 ), and Elbow Assembly (M36E1 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Packaging in Containers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX B. 7-28 FINAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Head Assembly Purging and Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Body Assembly Purging and Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrared Body Assembly Purging and Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elbow Assembly Purging and Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Head Assembly Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Body Assembly Final Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrared Body Assembly Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Elbow Assembly Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page C-1 C-2 C-1 C-1 ix TM 9-1240-380-34 HOW TO USE THIS MANUAL This manual has two volumes of maintenance information you will need to repair and service the M36 and M36E 1 Periscopes. ● Volume I - Troubleshooting ● Volume II - Maintenance The organization paragraph in each volume tells you what information you can find in each chapter and appendix. There are four ways to find any maintenance information you need: ● Index on the front cover which tells what information is contained in each chapter Table of Contents located at the front of the manual which has a complete listing by paragraph number and page number ● ● Fault Symptom Index ( Vol I, Chap 3 ) which lists the fault symptoms and shows where to look to fix them ● Maintenance Task Index ( Vol II, App. B) which lists major assemblies, subassemblies and paragraph numbers of all maintenance procedures Before doing any maintenance, you should read and understand HOW TO TROUBLESHOOT on page 1-3. If you do not know the equipment well, you should read the section on description and data ( Vol II, Chap 1). Throughout the manual reference is made to a Job Performance Guide 113-091-9000R (JPG 41 C) which helps you to develop skills in doing the maintenance tasks. X TM 9-1240-380-34 TECHNICAL MANUAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL VOLUME I - TROUBLESHOOTING PERISCOPE, TANK: M36 M36E1 Vol I TM 9-1240-380-34 CHAPTER 1 INTRODUCTION 1-1. SCOPE This volume contains troubleshooting requirements and procedures for direct support and general support (DS/GS) maintenance of the M36 and M36E1 Periscopes. See Volume II for maintenance procedures. 1-2. ORGANIZATION a. Chapter 2, Checkout Procedure, gives you flow charts to follow to check that the periscopes are working right. b. Chapter 3, Fault Symptom Index, lists the fault symptoms and where to look in this manual to fix each one. c. Chapter 4, Fault Isolation Procedures, shows you step-by-step how to troubleshoot the fault symptoms found in Chapter 3. d. Appendix A, Wiring Diagrams, may be used to help you find the cause of a fault. They can be used to trace signal flow or to find out what a voltage should be. Para 1-1 Vol I 1-1 TM 9-1240-380-34 1-3. HOW TO TROUBLESHOOT The following steps tell you how to troubleshoot. A diagram of these steps is on page 1-3. Do a visual check and list any faults on DA Form 2404 before making repairs. See Vol II, Chap 3 for what to check for. If you see any faults that may affect the checkout procedure, fix them now. This does not mean small things like painting scratches. Do the checkout procedure in Vol I, Chap 2 from the beginning until you find a fault symptom. When a fault symptom is found, go. to the chapter noted and follow the maintenance procedure given there. If you already know the fault symptom, look at the fault symptom index in Chapter 3 of this volume. This will also tell you what to do. After the fault symtom has been corrected, do the checkout procedure in Chapter 2 again. This is to make sure that all fault symptoms have been corrected. If all fault symptoms are now correct, do the remaining maintenance tasks on DA Form 2404. Do the final inspection given in Vol II, Chap 9. The job is over and the good assembly is sent back to service. If. all fault symptoms were not corrected after step E, the bad assembly is sent back to the . depot for repair. The sample fault isolation procedure ( para 1-5 ) shows you how to use the flow charts in this volume. Para 1-3 1-2 Vol I TM 9-1240-380-34 1-3. HOW TO TROUBLESHOOT (CONT) Vol I Para 1-3 Cont 1-3 TM 9-1240-380-34 1-4. TEST EQUIPMENT Test Equipment National Stock Number (NSN) Test Reference 1. Light Source Control 1240-00-980-9292 Checkout Body Assembly JPG 41C 2. Multimeter 6625-00-395-0587 Checkout Body Assembly JPG 41C 3.0-36 VDC Power Supply 6130-00-435-1116 Checkout Body Assembly, Infrared Body Assembly, Elbow Assembly JPG 41C 1-5. SAMPLE FAULT ISOLATION PROCEDURE The sample fault isolation procedure tells you how to use the flow charts in Chapters 2 and 4. Callouts Description This is the symptom shown in the Fault Symptom Index in Chapter 3. oc Block number. Tells you the number of the block on the page. Block numbers start over at every page. This is a note. It gives useful information that can help you in doing the procedure. A note will always come just before the step of the procedure that it is about. A warning will be labeled at top of block. Always follow the instruction in this kind of block carefully: If you don’t, you may be injured or injure someone else. A caution will also be labeled at top of block. The instructions in this kind of block tell you what to do so you will not damage equipment. Be sure you always follow caution instructions carefully. o D o E Index numbers are found in the procedures and the illustration to help you find the connector, switch, knob, etc. The illustration will always be on the same or an opposite page. Remember you will never have to turn the page to find the illustration. The circle is used to send you to another sheet of procedure to keep on troubleshooting. The top number in the circle tells you what sheet to go to. The bottom number tells you what block on that sheet to start with. For example: means that you should go to sheet 3 block 01 to keep on the procedure. Para 1-4 1 - 4 Vol I TM 9-1240-380-34 1-5. SAMPLE FAULT ISOLATION PROCEDURE (CONT) 4-3. VIEW IS NOT CLEAR (SHEET 2 OF 3) VOL II. PARA 4-6 Para 1-5 Cont Vol I 1-5 TM 9-1240-380-34 1-5. Callouts SAMPLE FAULT ISOLATION PROCEDURE (CONT) I Description This tells you where you came from. For example 2.03 means you came from sheet 2, block 03. The top part of the box tells you what to do. The bottom part tells you how to do it. After you become more skilled at troubleshooting and know more about the equipment, you may find that you only need to read the top pan of the box. This diamond shaped box is called a decision point. It asks you to answer a YES or NO question, after doing the what-to-do statement. If the answer is YES, you should go down the YES branch. If the answer is NO, you should go down the NO branch. Para 1-5 Cont 1-6 Vol I TM 9-1240-380-34 1-5. SAMPLE FAULT ISOLATION PROCEDURE (CONT) 4-3. VIEW IS NOT CLEAR (SHEET 3 OF 3) REPMCE MACHINE THREAD PLUG AND GASKET (VOL U PARA 4-4) Para 1-5 Cont Vol I 1-7/(1-8 blank) TM 9-1240-380-34 CHAPTER 2 CHECKOUT PROCEDURE 2-1. SCOPE Checkout of the M36 and M36E1 Periscopes are done by using the flow chart procedures in this chapter. You must do the checkout procedure from the beginning until a fault symptom is found. When it is, go to the fault symptom index in Chapter 3. After you have corrected the fault, start at the beginning again and do the checkout procedure until the periscope is working correctly. Assembly Checkout Figure Index No. Reference (para) Head Assembly Body Assembly Infrared Body Assembly (M36) Elbow Assembly (M36E1 ) 1 2-2 2-3 2-4 2-5 2 3 4 Para 2-1 Vol I 2-1 TM 9-1240-380-34 2-2. HEAD ASSEMBLY CHECKOUT (SHEET 1 OF 4) PERSONNEL: One EQUIPMENT CONDITION: Head assembly on work bench PRELIMINARY PROCEDURES: DO inspection upon receipt ( Vol II, para 3-3) CHAPTER 3 00 PURGE AND CHARGE (VOL II, PARA 8-2) Para 2-2 (Sheet 1 of 4) 2-2 Vol I TM 9-1240-380-34 2-2. HEAD ASSEMBLY CHECKOUT (SHEET 2 OF 4) CHAPTER 3 Para 2-2 (Sheet 2 0f 4) Vol I 2-3 TM 9-1240-380-34 2-2. HEAD ASSEMBLY CHECKOUT (SHEET 3 OF 4) CHAPTER 3. CHAPTER 3 Para 2-2 (Sheet 3 of 4) 2-4 Vol I TM 9-1240-380-34 2-2. HEAD ASSEMBLY CHECKOUT (SHEET 4 OF 4) VOL. II PARA 8-6 Para 2-2 (Sheet 4 of 4) Vol I 2-5 TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 1 OF 10) TEST EQUIPMENT: Light source control 0-36 VDC power supply PERSONNEL: One REFERENCES: JPG 41 C for connecting power supply EQUIPMENT CONDITION: Body assembly on work bench PRILIMINARY PROCEDURES: Do inspection upon receipt ( Vol II, para 3-4) Para 2-3 (Sheet 1 of 10) 2-6 Vol I TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 2 OF 10) Para 2-3 (Sheet 2 of 10) Vol I 2-7 TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 3 OF 10) CHAPTER 3. Para 2-3 (Sheet 3 of 10) 2-8 VOL I TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 4 OF 10) CHAPTER 3. CHAPTER 3. Para 2-3 (Sheet 4 of 10) Vol I 2-9 TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 5 OF 10) VOL. II PARA 8-3 CHAPTER 3. Para 2-3 (Sheet 5 of 10) 2-10 Vol I TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 6 OF 10) CHAPTER 3. CHAPTER 3. Para 2-3 (Sheet 6 of 10) Vol I 2-11 TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 7 OF 10) CHAPTER 3. Para 2-3 (Sheet 7 of 10) 2-12 Vol I TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 8 OF 10) CHAPTER 3. Para 2-3 (Sheet 8 of 10) Vol I 2-13 TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 9 OF 10) Para 2-3 (Sheet 9 of 10) 2-14 Vol I TM 9-1240-380-34 2-3. BODY ASSEMBLY CHECKOUT (SHEET 10 OF 10) CHAPTER 3. VOL. II PARA 8-3 VOL. II PARA 8-7 Para 2-3 (Sheet 10 of 10) Vol I 2-15 TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 1 OF 12) APPLICABLE CONFIGURATIONS: M36 TEST EQUIPMENT: 0-36 VDC power supply SUPPLIES: Heavy wire (short piece) Tape PERSONNEL: One REFERENCES: JPG 41 C for connecting power supply EQUIPMENT CONDITION: Infrared body assembly on work bench, power off PRELIMINARY PROCEDURES: Do inspection upon receipt ( Vol II, para 3-5) TM 9-2350-215-10 Para 2-4 (Sheet 1 of 12) 2-16 Vol I TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 2 OF 12) Vol I Para 2-4 (Sheet 2 of 12) 2-17 TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 3 OF 12) CHAPTER 3 Para 2-4 (Sheet 3 of 12) 2-18 Vol I TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 4 OF 12) Para Vol I 2-4(Sheet 4 of 12) 2-19 TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 5 OF 12) TM 9-2350-215-10 CHAPTER 13. Para 2-4 (Sheet 5 of 12) 2-20 Vol I TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 6 OF 12) CHAPTER 13. CHAPTER 3. Para 2-4 (Sheet 6 of 12) Vol I 2-21 TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 7 OF 12) CHAPTER 13. CHAPTER 3. Para 2-4 (Sheet 7 of 12) 2-22 Vol I TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 8 OF 12) TM 9-2350-215-10. CHAPTER 3. Para 2-4 (Sheet 8 of 12) Vol I 2-23 TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT CHAPTER 3. Para 2-4 (Sheet 9 of 12) 2-24 Vol I TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 10 OF 12 CHAPTER 3. Vol I Para 2-4 (Sheet 10 of 12) 2-25 TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 11 OF 12) CHAPTER 3. Para 2-4 (Sheet 11 of 12) 2-26 Vol I TM 9-1240-380-34 2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 12 OF 12) VOL. II PARA 8-4 VOL. II PARA 8-8. Para 2-4 (Sheet 12 of 12) Vol I 2-27 TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 1 OF 11) APPLICABLE CONFIGURATIONS: M36E1 TEST EQUIPMENT: 0-36 VDC power supply PERSONNEL: One REFERENCES: JPG 4lC for connecting power supply EQUIPMENT CONDITION: Elbow assembly on work bench PRELIMINARY PROCEDURES: Do inspection upon receipt ( Vol II, para 3-6 ) Para 2-5 ( Sheet 1 of 11) 2-28 Vol I TM 9-1240-380-34 ELBOW ASSEMBLY CHECKOUT (SHEET 2 OF 11 ) CHAPTER 3. Para 2-5 (Sheet 2 of 11) Vol I 2-29 TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 3 OF 11) CHAPTER 3. Para 2-5 (Sheet 3 of 11) 2-30 Vol I TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 4 OF 11). CHAPTER 3. Para 2-5 (Sheet 4 of 11) Vol I 2-31 TM 9-1240-380-34 2-5. ELBOW (SHEET 5 OF 11 ) CHAPTER 3. CHAPTER 3. Para 2-5 (Sheet 5 of 11) 2-32 Vol I TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 6 OF 11 ) CHAPTER 3 Para 2-5 (Sheet 6 of 11) Vol I 2-33 TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 7 OF 11 ) CHAPTER 3. CHAPTER 3. Para 2-5 (Sheet 7 of 11) 2-34 Vol I TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 8 OF 11) Para 2-5 (Sheet 8 of 11) Vol I 2-35 TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 9 OF 11 ) Para 2-5 (Sheet 9 of 11) 2-36 Vol I TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 10 OF 11 ) CHAPTER 3. CHAPTER 3. Vol I Para 2-5 (Sheet 10 of 11) 2-37 TM 9-1240-380-34 2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 11 OF 11) PARA 8-51. PARA 8-9 Para 2-5 (Sheet 11 of 11) 2-38 Vol I TM 9-1240-380-34 CHAPTER 3 FAULT SYMPTOM INDEX Fault Isolation Procedure or Maintenance Procedure(s) Symptom HEAD ASSEMBLY 1. Cannot see clearly or pressure cannot be held in head assembly Purge and charge head assembly (Vol II, para 8-2) 2. Head assembly does not fasten tightly to body assembly a. 3. Arm binds or does not move freely Send head assembly to depot for repair 4. Wing nuts on plate assembly bind when turned Replace studs ( Vol II, para 4-18) Tighten screws holding hooks on head assembly (Vol II, para 4-9) Replace hook(s) on head assembly ( Vol II, b. para 4-9) BODY ASSEMBLY 5. Reticle does not light Replace lower housing ( Vol II, para 5-3) 6. Cannot see clearly or pressure cannot be held in body assembly Purge and charge body assembly ( Vol II, para 8-3) 7. Reticle not sharply focused Replace eyepiece assembly ( Vol II, para 5-24) 8. Parallax exists Replace lower housing ( Vol II, para 5-3) 9. Body assembly does not fasten tightly to head assembly firmly a. b. Remove cotter pin from latch and adjust latch ( Vol II, para 5-6) Replace latch ( Vol II, para 5-6) 10. Loose boresight knobs Replace knob assembly (Vol II, para 5-15, 5-18) 11. Binding or rough turning of boresight knobs 12. Incorrect voltage at contacts of housing assembly Replace knob assembly (Vol II, para 5-15, 5-18) Replace housing assembly ( Vol II, para 5-12) INFRARED BODY ASSEMBLY (M36) 13. Dim, blinking or no green field of view when power is on Paragraph 4-5 14. Reticle does not light Paragraph 4-6 Vol I 3-1 TM 9-1240-380-34 FAULT SYMPTOM INDEX (CONT) Fault Isolation Procedure or Maintenance Procedure(s) Symptom 15. Infrared body assembly does not operate on batter power Paragraph 4-7 16. Pressure cannot be held in infrared body assembly Purge and charge infrared body assembly ( Vol II, para 8-4) 17. Reticle not sharply focused Replace eyepiece assembly ( Vol II, para 6-10 and 6-13) 18. Infrared body assembly does not hold tightly to body assembly Replace latch ( Vol II, para 6-27) 19. Loose boresight knobs Replace knob spring ( Vol II, para 6-36) 20. Binding or rough turning of boresight knobs Replace knob assembly (Vol II, para 6-36) ELBOW ASSEMBLY (M36E1) 21. Image is bright when shutter assembly switch is off Paragraph 4-9 22. Image flickers or cannot be seen, or brightness cannot be controlled Paragraph 4-10 23. Reticle cannot be seen or brightness cannot be controlled Paragraph 4-11I 24. Reticle does not move when boresight knob is turned Replace knob assembly ( Vol II, para 7-26) 25. Parallax error in eyepiece Send elbow assembly to depot for repair 26. Reticle cannot be sharply focused Replace eyepiece assembly ( Vol II, para 7-6) 27. No image or reticle when using M30 instrument light electrical connector Paragraph 4-12 28. Pressure cannot be held in elbow assembly Purge and charge elbow assembly ( Vol II, para 8-5) 3-2 Vol I . TM 9-1240-380-34 CHAPTER 4 FAULT ISOLATION PROCEDURES Section 1. G E N E R A L 4-1. SCOPE This chapter gives step-by-step procedures to troubleshoot the M36/M36E1 Periscope for fault symptoms found during checkout. After the fault has been corrected, do the checkout procedure in Chapter 2 again. This is to make sure that all faults have been corrected. 4-2. FAULT ISOLATION PROCEDURE INDEX I Fault Isolation Procedures Head Assembly Body Assembly Infrared Body Assembly (M36) Elbow Assembly (M36E1) I Reference (Section) 2 3 4 5 Section 2. HEAD ASSEMBLY FAULT ISOLATION PROCEDURES 4-3. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN HEAD ASSEMBLY (SHEET 1 OF 5) TOOLS: 1/4” flat tip screwdriver 7/16“ open end wrench #O and #2 cross tip screwdriver (Phillips type) SUPPLIES: Mild soap PERSONNEL: One REFERENCES: JPG 4lC for Checking leaks Purge and charge shutdown EQUIPMENT CONDITION: Head assembly on work bench Para 4-1 Vol I 4-1 TM 9-1240-380-34 4-3. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN HEAD ASSEMBLY (SHEET 2 OF 5) PARA 4-3 Para 4-3 (Sheet 2 0f 5) 4-2 Vol I TM 9-1240-380-34 4-3. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN HEAD ASSEMBLY (SHEET 3 OF 5) PARA 4-12 Para 4-3 (Sheet 3 0f 5) Vol I 4-3 TM 9-1240-380-34 4-3. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN HEAD ASSEMBLY (SHEET 4 OF 5) PARA 4-15. PARA 4-6. Para 4-3 (Sheet 4 of 5) 4-4 Vol I TM 9-1240-380-34 4-3. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN HEAD ASSEMBLY (SHEET 5 OF 5) PARA 4-6. Vol I Para 4-3 (Sheet 5 of 5) 4-5 TM 9-1240-380-34 Section 3. BODY ASSEMBLY FAULT ISOLATION PROCEDURES 4-4. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN BODY ASSEMBLY (SHEET 1 OF 5) TOOLS: 3/8” open end wrench #2 cross tip screwdriver ( Phillips type) SUPPLIES: Mild soap PERSONNEL: One REFERENCES: JPG 41C for Checking leaks Purge and charge shutdown EQUIPMENT CONDITION: Body assembly on work bench Para 4-4 (Sheet 1 of 5) 4-6 Vol I TM 9-1240-380-34 4-4. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN BODY ASSEMBLY (SHEET 2 OF 5) PARA 5-21 Para 4-4 (Sheet 2 of 5) Vol I 4-7 TM 9-1240-380-34 4-4. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN B O D Y ASSEMBLY (SHEET 3 OF 5) PARA 5-15 PARA 5-3 Para 4-4 (Sheet 3 of 5) 4-8 Vol I TM 9-1240-380-34 4-4 CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN BODY ASSEMBLY (SHEET 4 OF 5) PARA 5-3 Para 4-4 (Sheet 4 of 5) Vol I 4-9 TM 9-1240-380-34 4-4. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN BODY ASSEMBLY (SHEET 5 OF 5) PARA 5-3 Para 4-4 (Sheet 5 of 5) 4-10 Vol I TM 9-1240-380-34 Section 4. INFRARED BODY ASSEMBLY FAULT ISOLATION PROCEDURES 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 1 OF 13) APPLICABLE CONFIGURATIONS: M36 TEST EQUIPMENT: 0-36 VDC power supply Multimeter TOOLS: 1/4" flat tip screwdriver .050 socket head screw key (Allen wrench or equivalent) PERSONNEL: One REFERENCES: JPG 4lC for Connecting power supply Using multimeter EQUIPMENT CONDITION: Infrared body assembly on work bench Para 4-5 (Sheet 1 of 13) Vol I 4-11 TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 2 OF 13) Para 4-5 (Sheet 2 of 13) 4-12 Vol I TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 3 OF 13) Vol I Para 4-5 (Sheet 3 of 13) 4-13 TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 4 OF 13) PARA 6-21 PARA 6-30 Para 4-5 (Sheet 4 of 13) 4-14 Vol I TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 5 OF 13) PARA 6-30 Para 4-5 (Sheet 5 of 13) Vol I 4-15 wTM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 6 OF 13) Para 4-5 (Sheet 6 of 13) 4-16 Vol I TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 7 OF 13) PARA 21 Para 4-5 (Sheet 7 of 13) Vol I 4-17 TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 8 OF 13) PARA 6-15 Para 4-5 (Sheet 8 of 13) 4-18 Vol I TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 9 OF 13) PARA 6-15 Para 4-5(Sheet 9 of 13) Vol I 4-19 TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 10 OF 13) Para 4-5 (Sheet 10 of 13) 4-20 Vol I TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 11 OF 13) PARA 6-12 PARA 6-15 Para 4-5 (Sheet 11 of 13) Vol I 4-21 TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 12 OF 13) PARA 6-18 PARA 6-12 PARA 6-15 Para 4-5 (Sheet 12 of 13) 4-22 Vol I TM 9-1240-380-34 4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON (SHEET 13 OF 13) PARA 2-4 Vol I Para 4-5 (Sheet 13 of 13) 4-23 TM 9-1240-380-34 4-6. RETICLE DOES NOT LIGHT (SHEET 1 OF 6) APPLICABLE CONFIGURATIONS: M36 TEST EQUIPMENT: 0-36 VDC power supply Multimeter TOOLS: .050 socket head screw key (Allen wrench or equivalent) PERSONNEL: One REFERENCES: JPG 41C for Connecting power supply Using multimeter EQUIPMENT CONDITION: Infrared body assembly on work bench Para 4-6 (Shset 1 of 6) 4-24 Vol I TM 9-1240-380-34 4-6. RETICLE DOES NOT LIGHT (SHEET 2 OF 6) PARA 6-33 Para 4-6 (Sheet 2 of 6) Vol I 4-25 TM 9-1240-380-34 4-6. RETICLE DOES NOT LIGHT (SHEET 3 OF 6) PARA 6-33 Para 4-6 (Sheest 3 of 6) 4-26 Vol I TM 9-1240-380-34 4-6. RETICLE DOES NOT LIGHT (SHEET 4 OF 6) Para 4-6 (Sheet 4 of 6) Vol I 4-27 TM 9-1240-380-34 4-6. RETICLE DOES NOT LIGHT (SHEET 5 OF 6) PARA 6-30 PARA 5-33 Para 4-6 (Sheet 5 of 6) 4-28 Vol I TM 9-1240-380-34 4-6. RETICLE DOES NOT LIGHT (SHEET 6 OF 6) Vol I Para 4-6 (Sheet 6 of 6) 4-29 TM 9-1240-380-34 4-7. INFRARED BODY ASSEMBLY DOES NOT OPERATE ON BATTERY POWER (SHEET 1 OF 4) APPLICABLE CONFIGURATIONS: M36 PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench TM 9-2350-215-10 Para 4-7 (Sheet 1 of 4) 4-30 Vol I TM 4-7. 9-1240-380-34 INFRARED BODY ASSEMBLY DOES NOT OPERATE ON BATTERY POWER (SHEET 2 OF 4) Vol I Para 4-7 (Sheet 2 of 4) 4-31 TM 9-1240-380-34 4-7. INFRARED BODY ASSEMBLY DOES NOT OPERATE ON BATTERY POWER (SHEET 3 OF 4) PARA 6-21 PARA 6-15 Para 4-7 (Sheet 3 of 4) 4-32 Vol I TM 9-1240-380-34 4-7. INFRARED BODY ASSEMBLY DOES NOT OPERATE ON BATTERY POWER (SHEET 4 OF 4) Vol I Para 4-7 (Sheet 4 of 4) 4-33 TM 9-1240-380-34 4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 1 OF 7) APPLICABLE CONFIGURATIONS: M36 TOOLS: 7/16" open end wrench 3/ 16" socket head screw key (Allen wrench or equivalent) 1/4" flat tip screwdriver # 1 cross tip screwdriver ( Phillips type) SUPPLIES: Mild soap PERSONNEL: One REFERENCES: JPG 41C for: Checking leaks Purge and charge shutdown EQUIPMENT CONDITION: Infrared body assembly on work bench Para 4-8 (Sheet 1 of 7) 4-34 Vol I TM 4-8. 9-1240-380-34 PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 2 of 7) PARA 6-24 Para 4-8 (Sheet 2 of 7) Vol I 4-35 TM 9-1240-380-34 4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 3 OF 7) PARA 6-3 Para 4-8 (Sheet 3 of 7) 4-36 Vol I TM 9-1240-380-34 4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 4 OF 7) PARA 6-33 Para 4-8 (Sheet 4 of 7) Vol I 4-37 TM 9-1240-380-34 4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 5 OF 7) PARA 6-36 PARA 6-15 Para 4-8 (Sheet 5 of 7) 4-38 Vol I TM 9-1240-380-34 4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 6 OF 7) PARA 6-21 Para 4-8 (Sheet 6 of 7) Vol I 4-39 TM 9-1240-380-34 4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 7 OF 7) PARA 6-31 Para 4-8 (Sheet 7 of 7) 4-40 Vol I TM 9-1240-380-34 Section 5. ELBOW ASSEMBLY FAULT ISOLATION PROCEDURES 4-9. IMAGE IS BRIGHT WHEN SHUTTER ASSEMBLY SWITCH IS OFF (SHEET 1 OF 2) APPLICABLE CONFIGURATIONS: M36E1 TEST EQUIPMENT: Multimeter PERSONNEL: One REFERENCES: JPG 4lC for using multimeter Equipment CONDITION: Elbow assembly on work bench Vol I Para 4-9 (Sheet 1 of 2) 4-41 TM 9-1240-380-34 4-9. IMAGE IS BRIGHT WHEN SHUTTER ASSEMBLY SWITCH IS OFF (SHEET 2 OF 2) PARA 7-11 PARA 7-11 Para 4-9 (Sheet 2 of 2) 4-42 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS CONTROLLED (SHEET OR BRIGHTNESS 1 OF 21) CANNOT BE APPLICABLE CONFIGURATIONS: M36E1 TEST EQUIPMENT 0-36 VDC power supply Multimeter TOOLS: Soldering iron SUPPLIES: Solder (item 12, Vol II, App. A) PERSONNEL: One REFERENCES: JPG 41C for Using power supply Using multimeter Using soldering iron EQUIPMENT CONDITION: Elbow assembly on work bench Vol I Para 4-10 (Sheet 1 of 21) 4-43 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 2 OF 21) PARA 7-11 Para 4-10 (Sheet 2 of 21) 4-4s4 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 3 OF 21) PARA 7-11 Para 4-10 (Sheet 3 of 21) Vol I 4-45 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 4 OF 21) PARA 7-11 Para 4-10 (Sheet 4 of 21) 4-46 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 5 OF 21) Para 4-10 (Sheet 5 of 21) Vol I 4-47 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 6 OF 21) PARA 7-11 PARA 7-11 Para 4-10 (Sheet 6 of 21) 4-48 TM 4-10. 9-1240-380-34 IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 7 OF 21) PARA 7-11 Para 4-10 (Sheet 7 of 21) Vol I 4-49 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 8 OF 21) Para 4-10 (Sheet 8 of 21) 4-50 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 9 OF 21) PARA 7-11 Para 4-10 (Sheet 9 of 21) Vol I 4-51 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 10 OF 21) PARA 7-13 Para 4-10 (Sheet 10 of 21) 4-52 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 11 OF 21) PARA 7-11 PARA 7-6 Para 4-10 (Sheet 11 of 21) Vol I 4-53 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 12 OF 21) PARA 7-11 PARA 7-6 Para 4-10 (Sheet 12 of 21) 4-54 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 13 OF 21) PARA 7-11 Para 4-10 (Sheet 13 of 21) 4-55 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 14 OF 21) Para 4-10 (Sheet 14 of 21) 4-56 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 15 OF 21) PARA 7-11 PARA 7-6 PARA 7-11 Para 4-10 (Sheet 15 of 21) Vol I 4-57 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 16 OF 21) Para 4-10 (Sheet 16 of 21) 4-58 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 17 OF 21) Para 4-10 (Sheet 17 of 21) Vol I 4-59 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 18 OF 21) PARA 7-8 PARA 7-11 Para 4-10 (Sheet 18 of 21) 4-60 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 19 OF 21) PARA 7-14 PAR 7-6 PARA 7-14 PARA 4-10 Vol I 4-61 TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 20 OF 21) PARA 7-12 PAR 7-14 Para 4-10 (Sheet 20 of 21) 4-62 Vol I TM 9-1240-380-34 4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 21 OF 21) PARA 7-11 PARA 7-6 PARA 7-6 PARA 7-14 PARA 7-14 PAR 8-9 Para 4-10 (Sheet 21 of 21) Vol I 4-63 TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 1 OF 10) APPLICABLE CONFIGURATIONS: M36E1 TEST EQUIPMENT: 0-36 VDC power supply TOOLS: Soldering iron SUPPLIES: Solder (item 12, Vol II, App. A) PERSONNEL: One REFERENCES: JPG 4lC for: Using soldering iron Using multimeter Connecting power supply EQUIPMENT CONDITION: Elbow assembly on work bench PRELIMINARY PROCEDURES: Remove regulator assembly ( Vol II, para 7-12, steps 1 and 2) PARA 7-11 Para 4-11 (Sheet 1 of 10) 4-64 Vol I TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 2 OF 10) Para 4-11 (Sheet 2 of 10) Vol I 4-65 TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 3 OF 10) PARA 7-11 Para 4-11 (Sheet 3 of 10) 4-66 Vol I TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 4 OF 10) Para 4-11 (Sheet 4 of 10) Vol I 4-67 TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 5 OF 10) PARA 7-11 PARA 7-23 Para 4-11 (Shee 5 of 10) 4-68 Vol I TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 6 OF 10) PARA 7-14 Para 4-11 (Sheet 6 of 10) Vol I 4-69 TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 7 OF 10) PARA 7-14 PARA 7-11 PARA 8-9 Para 4-11 (Sheet 7 of 10) 4-70 Vol I TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 8 OF 10) Para 4-11 (Sheet 8 of 10) Vol I 4-71 TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 9 OF 10) PARA 7-14 PARA 7-11 Para 4-72 4-11 (Sheet 9 of 10) Vol I TM 9-1240-380-34 4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED (SHEET 10 OF 10) PARA 7-14 PARA 7-11 PARA 8-9 Para 4-11 (Sheet 10 of 10) Vol I 4-73 TM 9-1240-380-34 4-12. NO IMAGE OR RETICLE WHEN USING M30 INSTRUMENT LIGHT ELECTRICAL CONNECTOR (SHEET 1 OF 5) TEST EQUIPMENT: 0-36 VDC power supply Multimeter TOOLS: Soldering iron SUPPLIES: Solder (item 12, Vol H, App. A) PERSONNEL: One REFERENCES: JPG 41C for: Using multimeter Using power supply Using soldering iron EQUIPMENT CONDITION: Elbow assembly on work bench Para 4-12 (Sheet 1 of 5) 4-74 Vol I TM 9-1240-380-34 4-12. NO IMAGE OR RETICLE WHEN USING M30 INSTRUMENT LIGHT ELECTRICAL CONNECTOR (SHEET 2 OF 5) PARA 7-11 Para 4-12 (Sheet 2 of 5) Vol I 4-75 TM 9-1240-380-34 4-12. NO IMAGE OR RETICLE WHEN USING M30 INSTRUMENT LIGHT ELECTRICAL CONNECTOR (SHEET 3 OF 5) PARA 7-11 PARA 2-5 Para 4-12 (Sheet 3 of 5) 4-76 Vol I TM 9-1240-380-34 4-12. NO IMAGE OR RETICLE WHEN USING M30 INSTRUMENT LIGHT ELECTRICAL CONNECTOR (SHEET 4 OF 5) PARA 7-11 Para 4-12 (Sheet 4 of 5) Vol I 4-77 TM 9-1240-38034 4-12. NO IMAGE OR RETICLE WHEN USING M30 INSTRUMENT LIGHT ELECTRICAL CONNECTOR (SHEET 5 OF 5) PARA 7-11 PARA 7-11 PARA 8-9 Para 4-12 (Sheet 5 of 5) 4-78 Vol I TM 9-1240-380-34 4-13. PRESSURE CANNOT BE HELD IN ELBOW ASSEMBLY (SHEET 1 OF 6) APPLICABLE CONFIGURATIONS: M36E1 TOOLS: 7/16” open end wrench # 1 cross tip screwdriver (Phillips type) 3/16’” socket head screw key (Allen wrench or equivalent) SUPPLIES: Mild soap PERSONNEL: One REFERENCES: JPG 41C for: Checking leaks Purge and charge shutdown EQUIPMENT CONDITION: Elbow assembly on work bench Para 4-13 (Sheet 1 of 6) Vol I 4-79 TM 9-1240-380-34 4-13. PRESSURE CANNOT BE HELD IN ELBOW ASSEMBLY (SHEET 2 OF 6) PARA 7-17 Para 4-13 (Sheet 2 of 6) 4-80 Vol I TM 9-1240-380-34 4-13. PRESSURE CANNOT BE HELD IN ELBOW ASSEMBLY (SHEET 3 OF 6) PARA 7-6 Vol I Para 4-13 (Sheet 3 of 6) 4-81 TM 9-1240-380-34 4-13. PRESSURE CANNOT BE HELD IN ELBOW ASSEMBLY (SHEET 4 OF 6) PARA 7-23 PARA 7-26 Para 4-13 (Sheet 4 of 6) 4-82 Vol I TM 9-1240-380-34 4-13. PRESSURE CANNOT BE HELD IN ELBOW ASSEMBLY (SHEET 5 OF 6) Para 4-13 (Sheet 5 of 6) Vol I 4-83 TM 9-1240-380-34 4-13. PRESSURE CANNOT BE HELD IN ELBOW ASSEMBLY (SHEET 6 OF 6) Para 4-13 (Sheet 6 of 6) 4-84 Vol I TM 9-1240-380-34 APPENDIX A WIRING DIAGRAMS A-1. M36 ELECTRICAL SCHEMATIC DIAGRAM Para A-1 Vol I A-1 TM 9-1240-380-34 A-2. M36 ELECTRICAL BLOCK DIAGRAM Para A-2 A-2 Vol I TM 9-1240-380-34 A-3. M36E1 ELECTRICAL SCHEMATIC DIAGRAM Para A-3 Vol I A-3 TM 9-1240-380-34 A-4. M36E1 ELECTRICAL BLOCK DIAGRAM Para A-4 A-4 Vol I TM 9-1240-380-34 TECHNICAL MANUAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL VOLUME II - MAINTENANCE PERISCOPE, TANK: M36 M36E1 Vol II TM 9-1240-380-34 CHAPTER 1 INTRODUCTION Section 1. GENERAL 1-1. SCOPE This volume contains the maintenance requirements and procedures for direct support and general support (DS/GS) maintenance for the M36/M36E1 Periscopes. See Volume I for troubleshooting procedures. 1-2. ORGANIZATION a. Chapter 2, General Maintenance Information, lists maintenance items and references general procedures that are necessary to do the maintenance in this manual. b. Chapter 3, Inspection Upon Receipt, gives the kind of defects to look for when the unit is returned to DS/GS. A complete inspection should be made and faults listed on DA Form 2404 before any repairs are made. c. Chapter 4 thru 7, Maintenance Procedures, give step-by-step procedures to repair faults found during inspection or troubleshooting. d. Chapter 8, Final Inspection, gives procedures to be done after repair to make sure that the periscope works and is ready for packaging and installation. e. Chapter 9, Packaging, gives procedures for packaging the periscope for storage or shipment. f. Appendix A, Expendable Supplies and Materials, lists the supplies and materials needed to repair the periscope. g. Appendix B, Maintenance Task Index, helps you find the necessary maintenance tasks for the periscope. h. Appendix C, Fabricated Tool, gives the design of special tools needed to repair the periscope. Para 1-1 Vol II 1-1 TM 9-1240-380-34 Section 2. DESCRIPTION AND DATA 1-3. DESCRIPTION The M36/M36E1 is a monocular periscope for the tank commander. It is part of the fire control system in the M60 series tanks. The M36 periscope is mounted in M119 periscope mount. The M36E1 is mounted in M119 E 1 mount. A link assembly interconnects the periscope’s sighting with the tank machine gun. The periscope is made up of three main parts: a. HEAD ASSEMBLY. This part contains an entrance window, a prism (mirror) which is mechanically connected (by way of link assembly) to the gun elevation drive and a mounting plate by which the periscope is attached to the periscope mount. b. BODY ASSEMBLY. This part contains a unity power mirror between entrance and exit windows. It houses the daylight viewing optical system which is collimated to the body housing to insure parallelism in the line of sight. It also houses the night viewing optical system which is the third main part. The M36 night viewing unit is the Infrared Body Assembly. The M36E1 night viewing unit is the Elbow Assembly. c. INFRARED BODY ASSEMBLY. This monocular telescope is used for infrared sighting. Within the assembly is an integral reticle projection system positioned by boresight knobs. d. ELBOW ASSEMBLY. The elbow or image intensification assembly amplifies available light by means of an image intensifier tube and power supply, making objects visible without the aid of a searchlight. Its optical system is like the Infrared Body Assembly. Para 1-3 1-2 Vol II TM 9-1240-380-34 1-3. DESCRIPTION (CONT) Para 1-3 Cont Vol II 1-3 TM 9-1240-380-34 1-4. TABULATED DATA a. DIMENSIONS (approximate) Height . . . . . . . . . . . . . . . . . . . ....... . . . . . . . . . . . . . . . . . . . . . . . . Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.84 inches 13.50 inches 12.62 inches b. WEIGHT Head assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Body assembly . . . . . . . . . . . . . . . . . . .. . . . . . . Infrared assembly (M36) . . . . . . . . . . . . . . .. Elbow assembly (M36E1) 25 pounds 11 pounds 24 pounds 24 pounds c. OPTICAL CHARACTERISTICS Daylight system Magnification... . . . . . . . . . . . . . . . . . . . . . Field-of-view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 power 10 degrees Infrared system Magnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Field-of-view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 power 8 degrees Image intensifier system Magnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1 power Unity system Magnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Field-of-view Horizontal ..... .. . . . . . . . . . . . . . . . . . . . . . Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Para 1-4 1-4 Vol II 1 power 60 degrees 10 degrees TM 9-1240-380-34 1-5. DIFFERENCES BETWEEN CONFIGURATIONS The difference between the M36 Periscope and the M36E1 Periscope is the night viewing telescope. The M36 uses the infrared body assembly and the M36E1 uses the elbow assembly. Para 1-5 Vol II 1-5/(1-6 blank) TM 9-1240-380-34 CHAPTER 2 GENERAL MAINTENANCE INFORMATION Section 1. GENERAL 2-1. SCOPE This chapter tells you what special tools and test equipment are needed and where to find general information for the maintenance procedures in this volume. Section 2. REFERENCE DOCUMENTS 2-2. GENERAL MAINTENANCE General maintenance procedures for fire control material are in TM 9-254 and Job Performance Guide 113-091-9000R (JPG 41C). 2-3. CLEANING General cleaning procedures are in JPG 41C. 2-4. PAINTING General painting procedures are in TM 43-0139. 2-5. SEALING General instructions for how to use sealing compounds are in JPG 41 C. 2-6. LUBRICATION General instructions for how to use lubricants are in JPG 41 C. Section 3. SAFETY PROCEDURES 2-7. GENERAL PROCEDURE General safety procedures are in AR 385-40 Safety Accident Reporting and Records. Safety procedures for using power supplies and nitrogen tanks are in JPG 41C. Para 2-1 Vol II 2-1 TM 9-1240-380-34 Section 4. SPECIAL TOOLS AND TEST EQUIPMENT TOOLS AND TEST EQUIPMENT 2-8. Item 1. 2. 3. Dioptometer Power Supply , 0-36 VDC Purging Kit, fire control National Stock Number (NSN) Use 4931-00-536-5557 7680631 Focus eyepiece assembly 6130-00-435-1116 . . . Final test body assembly, infrared body assembly (M36), and elbow assembly (M36E1) . 4931-00-065-1110 SC4931-95 -CL-J54 Purge and charge assemblies Para 2-8 2-2 Part Number (FSCM) Vol II TM 9-1240-380-34 CHAPTER 3 INSPECTION UPON RECEIPT 3-1. SCOPE This chapter gives procedures to check the M36 / M36E1 Periscope for faults you can see when it is received in the DS/GS shop. It also tells you what part of this volume to go to for various repair. A complete inspection should be made and all faults listed on DA Form 2404 before taking any maintenance actions. 3-2. INSPECTION UPON RECEIPT INDEX Procedure Figure Index No. Reference (para) Head Assembly Body Assembly Infrared Body Assembly ( M36 ) Elbow Assembly ( M36E1 ) 1 2 3 4 3-3 3-4 3-5 3-6 Para 3-1 Vol II 3-1 TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT TOOLS: Valve core wrench 3/8” and 3/16” flat tip screwdriver #0 and #2 cross tip screwdriver ( Phillips type) 1/2” box end wrench 3/8” and 7/16” open end wrench Lens tissue (item 14, App. A) Paint (item 5, App. A) Primer (item 6, App. A) SUPPLIES: PERSONNEL: One REFERENCES: TM 43-0139 for painting JPG 41C for Cleaning Completing DA Form 2404 EQUIPMENT CONDITION: Head assembly on work bench FRAME 1 Step Procedure Maintenance Action Reference 1. Check head assembly (1) for cracks or dents. If cracks or dents are found, do purging and charging procedure. If leak is present, tell your supervisor. Para 8-2 2. Check observation window (2) for cracks, scratches or dirt. Clean using lens paper. If cracks are found, replace window. Para 4-12 3. Check head assembly (1) for dirt, chipped or scratched paint and corrosion. Clean. Paint if needed. JPG 41C TM 43-0139 4. Using #0 Phillips screwdriver, check that seven screws (3) are tight. Tighten. Replace if missing. 5. Using 3/8” screwdriver, check that machine thread plug (4) is tight. Tighten. Replace if missing. GO TO FRAME 2 Para 3-3 3-2 Vol II ... Para 4-15 TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-3 Cont Vol II 3-3 TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 2 Step Maintenance Action Procedure Reference 1. Using #0 Phillips screwdriver, check that eight screws (1) are tight. Tighten. Replace if missing. ... 2. Using #2 Phillips screwdriver, check that two screws (2) are tight. Tighten. Replace if missing. ... 3. Check that two pins (3) are not bent or corroded. Clean. Tell your supervisor if bent or missing. JPG 41C for cleaning 4. Check that packing (4) is not worn or damaged. Replace if missing or damaged. Para 4-12 5. Using #0 Phillips screwdriver, check that eight screws (5) are tight. Using 1/2” wrench, check that nut (6) is tight. Tighten. Replace if missing. ... Tighten. Replace if missing. ... 7. Check that two pins (7) are not damaged or corroded. Clean. If missing or damaged, tell your supervisor. 8. Using #2 Phillips screwdriver, check that two screws ( 8 ) are tight. Tighten. Replace if missing. ... 9. Using #0 Phillips screwdriver, check that two screws (9) are tight. Tighten. Replace if missing. ... 10. Check that name plate (10) can be read. GO TO FRAME 3 If it cannot be read, tell your supervisor. ... 6. Para 3-3 Cont 3-4 Vol II JPG 41C for cleaning TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-3 Cont Vol II 3-5 TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 3 Maintenance Action Reference Step Procedure 1. Using #2 Phillips screwdriver, check that 13 screws (1) are tight. Tighten. Replace if missing. Para 4-8 2. Using 3/8” wrench, remove cap (2). Using valve core wrench, check that valve core (3) is tight and seated. Using 7/ 16” wrench, check that stem (4) is tight. Replace cap, valve stem, and core if missing or damaged. Tighten valve stem if loose. Para 4-3 3. Using 3 / 8" wrench, install cap (2). 4. Check that strap (5) is not damaged. Replace if damaged or missing. 5. Check that pin (6) is not bent or missing. If bent or missing, tell your supervisor. 6. Check that pin (7) is not missing. Replace if missing. 7. Check that wire seal (8) is not broken or missing. If wire seal (8) is broken or missing, tell your supervisor. ... 8. Using 3/16” flat tip screwdriver, check that screw (9) is tight. If screw is loose or missing, tell your supervisor. ... Para 4-3 GO TO FRAME 4 Para 3-3 Cont 3 - 6 Vol II Para 4-3 ... Para 4-8 TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-3 Cont Vol II 3-7 TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 4 Step Procedure 1. Using #2 Phillips screwdriver, check that ten screws (1) are tight. Tighten. Replace if missing. 2. Check that two pins (2) are not missing or damaged. If missing or damaged, replace. Para 4-18 3. Check that two nuts (3) are not missing or damaged. If missing or damaged, replace. Para 4-18 4. Check that two wing nuts (4) are not missing or damaged. If missing or damaged, replace. Para 4-18 5. Check that two wing nuts (4) turn freely. If binding, replace studs (5). Para 4-18 6. Check that two pins (6) are not missing. If missing, replace. Para 4-18 Maintenance Action NOTE FOLLOW-ON MAINTENANCE: Correct faults listed on DA Form 2404 that may affect the checkout procedure. Do checkout procedure (Vol I, para 2-2). END OF TASK Para 3-3 Cont 3-8 Vol II Reference . . . TM 9-1240-380-34 3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT) Vol II Para 3-3 Cont 3-9 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT TOOLS: 9/64” socket head screw key (Allen wrench or equivalent) Valve core wrench 3/8” flat tip screwdriver 0.187 spanner wrench #0, #1, and #2 cross tip screwdriver (Phillips type) 0.070 jewelers screwdriver 3/8” and 7/16” open end wrench # 1 offset cross tip screwdriver ( Phillips type) Lens tissue (item 14, App. A) Paint (item 5, App. A) Primer (item 6, App. A) PERSONNEL: One SUPPLIES: REFERENCES: TM 43-0139 for painting JPG 41C for: Cleaning Completing DA Form 2404 EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Step Maintenance Action Procedure Reference 1. Check body (1) for large dents and broken windows (2). Report damage to supervisor. 2. Check around windows (2) for missing or detective seal. If defects are found, do purging and charging procedure. If leaks are found, tell your supervisor. Para 8-3 ... 3. Check body (1) for chipped paint and corrosion. Paint chipped or scratched areas. Clean corroded areas. TM 43-0139 JPG 41C for cleaning 4. Check windows (2) for cracks, scratches. or dirt. If windows are scratched or cracked, tell your supervisor. If windows are dirty, clean with lens tissue. JPG 41C for cleaning 5. Using #1 Phillips screwdriver, check that four screws (3) are tight. Tighten. Replace if missing. . . . 6. Check that plate (4) can be read. If plate cannot be read, tell your supervisor. . . . GO TO FRAME 2 Para 3-4 3-10 Vol II . . . . . . TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-4 Cont Vol II 3-11 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT CONT) FRAME 2 Maintenance Action Reference Step Procedure 1. Using #0 Phillips screwdriver, check that two screws (1) are tight. Tighten. Replace if missing. Para 5-6 2. Check that latch (2) moves smoothly and that cotter pin (3) is not missing. Replace latch or cotter pin if missing. Para 5-6 3. Using 9/64" Allen wrench, check that two screws (4) are tight. Tighten. Replace if missing. Para 5-6 4. Using #2 Phillips screwdriver, check that six screws (5) are tight. Tighten. Replace if missing. ... 5. Using #2 Phillips screwdriver, check that four screws (6) are tight. Tighten. Replace if missing. ... 6. Using jewelers screwdriver, check that two screws (7) are tight. Tighten. Replace if missing. ... 7. Check eyepiece (8) turns from stop to stop. If binding, tell your supervisor. ... 8. Using jewelers screwdriver, check that three screws (9) are tight. Tighten. Replace if missing. ... GO TO FRAME 3 Para 3-4 Cont 3-12 Vol II TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-4 Cont Vol II 3-13 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 3 Maintenance Action Reference Step Procedure 1. Using #0 Phillips screwdriver, check that four screws (1) are tight. Tighten. Replace if missing. . . . 2. Using #0 Phillips screwdriver, check that six screws (2) are tight. Tighten. Replace if missing. . . . 3. Using #2 Phillips screwdriver, check that two screws (3) are tight. Tighten. Replace if missing. . . . 4. Check latch (4) moves smoothly. Replace. 5. Using #1 Phillips screwdriver, check that four screws (5) are tight. Tighten. Replace if missing. ... 6. Check that name plate (6) can be read. If cannot be read, tell your supervisor. ... GO TO FRAME 4 Para 3-4 Cont 3-14 Vol II Para 5-6 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-4 Cont Vol II 3-15 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 4 Maintenance Action Procedure Step Reference 1. Check that latch (1) moves smoothly and that cotter pin (2) is not missing. Replace latch or cotter pin. Para 5-6 2. Using #0 Phillips screwdriver, check that two screws (3) are tight. Tighten. Replace if missing. ... 3. Using #2 Phillips screwdriver, check that two screws (4) are tight. Tighten. Replace if missing. ... 4. Check that strike (5) is not bent or broken. Replace. Para 5-9 5. Pull out and check knob (6) turns from stop to stop without binding. Replace if binding. Para 5-15 6. Using spanner wrench, check that screw (7) is tight. Tighten. Replace if missing 7. Check markings on scale (8) can be read. Clean. Replace knob assembly if cannot be read after cleaning. 8. Using # 1 Phillips screwdriver, check that four screws (9) are tight. Tighten. Replace if missing. ... 9. Check if observation window (10) is damaged or missing. If damaged or missing, tell your supervisor. ... GO TO FRAME 5 Para 3-4 Cont 3-16 Vol II ... Para 5-15 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-4 Cont Vol II 3-17 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 5 Step Procedure Maintenance Action Reference 1. Using 3/8” open end wrench, remove cap (1). Using valve core wrench, check that valve (2) is tight and seated. Tighten valve. Replace cap or valve if missing. Para 5-21 2. Using 7/16" open end wrench, check that stem (3) is tight. Tighten. . . . 3. Check that valve cap strap (4) is not damaged. Replace. Para 5-21 4. Pull out and check knob (5) turns from stop to stop without binding. Replace if binding. Para 5-18 5. Using spanner wrench, check that screw (6) is tight. Tighten. Replace if missing. Para 5-18 6. Check markings on scale (7) can be read. Clean. Replace knob assembly if scale cannot be read after cleaning. Para 5-18 7. Using # 1 Phillips screwdriver, check that four screws (8) are tight. Tighten. Replace if missing. 8. Using 3/8” open end wrench, install valve cap (1) on valve stem (3). Para 5-21 GO TO FRAME 6 Para 3-4 Cont 3-18 . . . Vol II TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-4 Cont Vol II 3-19 TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 6 Reference Step Procedure 1. Using #2 Phillips screwdriver, check that screw (1) is tight. Tighten. Replace if missing. . . . 2. Using #2 Phillips screwdriver, check that three screws (2) are tight and clamp is not missing. Tighten. Replace if missing. . . . 3. Check wire terminals (3) for damage or corrosion. Replace housing assembly if damaged. Clean if corroded. JPG 41C Para 5-12 4. Using #1 Phillips and #1 offset Phillips screwdrivers, check two screws (4) for tightness. Tighten. Replace if missing. ... 5. Check boot (5) for damage. Replace housing assembly if damaged. Para 5-12 6. Check two contact pins (6) for damage or corrosion. Clean if corroded. Replace housing assembly if damaged. JPG 41C Para 5-12 7. Check both contact pins (6) return to start position by pushing pins in with fingers. If springs are weak or missing, replace housing assembly. Para 5-12 Maintenance Action NOTE FOLLOW-ON MAINTENANCE: Correct faults listed on DA Form 2404 that may affect the checkout procedure. Do checkout procedure (Vol I, Para 2-3). END OF TASK Para 3-4 Cont 3-20 Vol II TM 9-1240-380-34 3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-4 Cont Vol II 3-21 TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/8", 3/16", 1/4" flat tip screwdrivers 3/8" open end wrench 1/16" pin open face spanner wrench .028", .035", .050", 1/16", 1/8", 3/16" socket head screw key (Allen wrench or equivalent) #1 cross tip screwdriver ( Phillips type) SUPPLIES: Paint (item 5, App. A) Primer (item 6, App. A) PERSONNEL: One REFERENCES: TM 43-0139 for painting TM 9-254 for general maintenance JPG 41C for completing DA Form 2404 EQUIPMENT CONDITION: Infrared body assembly on work bench FRAME 1 Maintenance Action Reference Step Procedure 1. Check infrared body assembly (1) for cracks or dents. If cracks are found, do purging and charging procedure. If leaks are found, tell your supervisor. Para 8-4 2. Check lens (2) for cracks, scratches, and dirt. a. Clean, if dirty. b. If cracked or scratched, tell your supervisor. TM 9-254 3. Check prism (3) for cracks and scratches. Tell your supervisor, if cracked or scratched. . . . 4. Check infrared body assembly (1) for dirt, chipped or scratched paint and corrosion. Clean. Paint chipped or scratched area. TM 9-254 TM 43-0139 5. Using .035" Allen wrench, check that five setscrews (4) are tight. Tighten. Replace if missing. GO TO FRAME 2 Para 3-5 3-22 Vol II ... TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-5 Cont Vol II 3-23 TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 2 Step Procedure Maintenance Action Reference 1. Using 1/16” Allen wrench, check that two setscrews (1) are tight. Tighten. Replace if missing. . . . 2. Using .028” Allen wrench, check that two setscrews (2) are tight. Tighten. Replace if missing. . . . 3. Using .050” Allen wrench, check that two setscrews (3) are tight in knob. Tighten. Replace setscrew knob if missing. . . . 4. using 3/ 16” Allen wrench, check that four screws (4) are tight. Tighten. Replace if missing. . . . 5. using 1/8” Allen wrench, check that setscrew (5) is tight. Tighten. Replace if missing. . . . 6. Try to move key (6) (any movement shows looseness). Check for damage. Tighten. Replace if damaged. GO TO FRAME 3 Para 3-5 Cont 3-24 Vol II Para 6-6 TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-5 Cont Vol II 3-25 TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 3 Maintenance Action Procedure Step Reference Para 6-15 1. Check that cap (1) is tight. Check that gasket (2) is installed. Tighten. Replace gasket if missing. 2. Using 1/4” screwdriver, check that four screws (3) are tight. Tighten. Replace if missing. . . . 3. Check switch plate (4) can be read. If plate cannot be read, tell your supervisor. . . . 4. Using 3/8” open end wrench, check that valve cap (5) is tight. Tighten. Replace if missing. Para 6-24 5. Using 1/16” pin open face spanner wrench, check that two screws (6) are tight. Tighten. Replace if missing. . . . 6. Using 1/4”’ screwdriver, check that eight screws (7) on two knob assemblies (8) are tight. Tighten. Replace if missing. . . . GO TO FRAME 4 Para 3-5 Cont 3-26 Vol II TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-5 Cont Vol II 3-27 TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 4 Step Maintenance Action Procedure Reference ... 1. Using Phillips screwdriver, check that 15 screws (1) are tight. Tighten. Replace if missing. 2. Check latch (2) for damage. Using 1/4” screwdriver, check two screws (3) (under latch) are tight. a. Replace latch if damaged. b. Tighten. Replace screws if missing. Para 6-27 3. Check that lampholder (4) is tight. Check that cord (5) and packing (6) are installed. Tighten. Replace missing part(s). Para 6-33 4. Check contacts (7) for damage. Replace if damaged. Para 6-30 5. Using 3/ 16“ screwdriver, check that four screws (8) are tight. Tighten. Replace if missing. GO TO FRAME 5 Para 3-5 Cont 3-28 Vol II ... TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-5 Cont Vol II 3-29 TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 5 Maintenance Action Procedure Step Reference 1. Using .050” Allen wrench, check that setscrew (1) is tight. Tighten. Replace if missing. Para 6-30 2. Check that plug (2) is not missing. If missing or damaged, tell your supervisor. ... 3. Without pulling out boresight knobs (3), check that each knob is firmly seated against fixed clutch. If knob slips on clutch, replace knob assembly. Para 6-36 4. Pull out each boresight knob (3). Turn each knob (3) and check for binding. Replace knob assembly if binding. Para 6-36 5. Check that two scales (4) can be read. Clean. Replace knob assembly if scales cannot be read. Para 6-36 6. Check that name plate (5) can be read. If it cannot be read, tell your supervisor. ... 7. Using 1/ 8" screwdriver, check that four screws (6) are tight. Tighten. Replace if missing. ... NOTE FOLLOW-ON MAINTENANCE: Correct faults listed on DA Form 2404 that may affect the checkout procedure. Do checkout procedure (Vol I, para 2-4). END OF TASK Para 3-5 Cont 3-30 Vol II TM 9-1240-380-34 3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-5 Cont Vol II 3-31 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #0, #1, and #2 cross tip screwdriver (Phillips type) #2 cross tip offset screwdriver (Phillips type) 3/8” open end wrench 3/32” and 1/16” pin open face spanner wrench .050”, 1/16”, 1/8”, 3/16”, and 5/64” socket head screw key (Allen wrench or equivalent) SUPPLIES: Paint (item 5, App. A) Primer (item 6, App. A) PERSONNEL: One REFERENCES: TM 43-0139 for painting TM 9-254 for general maintenance EQUIPMENT CONDITION: Elbow assembly on work bench FRAME 1 Maintenance Action Reference Step Procedure 1. Check elbow assembly (1) for crack or dents. If cracks are found, perform purging and charging procedure. If leaks are found, fault isolate for leaks. Para 8-5 2. Check lens (2) and (3) for cracks, scratches, and dirt. a. b. TM 9-254 ... 3. Looking through lens (3), check prism (4) for cracks and scratches. If cracks or scratches are found. tell your supervisor. 4. Look through lens (3), check for condensation. If condensation is seen, purge and charge. Para 8-5 5. Check elbow assembly (1) for dirt, chipped or scratched paint and corrosion. Clean. Paint chipped or scratched area. TM 9-254 TM 43-0139 GO TO FRAME 2 Para 3-6 3-32 Vol II Clean, if dirty. If cracked or scratched, tell your supervisor. ... TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-6 Cont Vol II 3-33 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 2 Maintenance Action Reference Step Procedure 1. Using 1/16” Allen wrench, check that three setscrews (1) are tight. Tighten. Replace if missing. Para 7-6 2. Using .050” Allen wrench, check that two setscrews (2) are tight. Tighten. Replace if missing. Para 7-6 3. Using .050” Allen wrench, check that three setscrews (3) are tight. Tighten. Replace if missing. Para 7-6 4. Using .050” Allen wrench, check that two setscrews (4) are tight. Tighten. Replace if missing. Para 7-6 5. Using 3/16" Allen wrench, check that four screws (5) are tight. Tighten. Replace if missing. ... 6. Try to move key (6) (any movement shows looseness). Check for damage. Tighten. Replace if damaged. GO TO FRAME 3 Para 3-6 Cont 3-34 Vol II Para 7-3 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-6 Cont Vol II 3-35 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 3 Step Procedure Maintenance Action Reference . . . 1. Check that switch assembly plate (1) can be read. If it cannot be read, tell your supervisor. 2. Using 3/ 8" open end wrench, check that valve cap (2) is tight. Tighten. Replace if missing. Para 7-17 3. Using 1/16" pin open face spanner wrench, check that two screws (3) are tight. Tighten. Replace if missing. Para 7-26 4. Using #1 Phillips screwdriver, check that eight screws (4) are tight. Tighten. Replace if missing. ... 5. Using #1 Phillips screwdriver, check that four screws (5) are tight. Tighten. Replace if missing. ... 6. Using .050" Allen wrench, check that four setscrews (6) in knob (7) are tight. Tighten. Replace if missing. Para 7-14 7. Check that RTV sealant is in holes (8), Put RTV sealant in holes (8). JPG 41C Para 7-14 8. Using #0 Phillips screwdriver, check that two screws (9) are tight. Tighten. Replace if missing. ... 9. Using 1/8” Allen wrench, check that setscrew (10) is tight. Tighten. Replace if missing. ... GO TO FRAME 4 Para 3-6 Cont 3-36 Vol II TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-6 Cont Vol II 3-37 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 4 Step Procedure 1. Using #l Phillips screwdriver, check that six screws (1) are tight. Tighten. Replace if missing. . . . 2. Using #2 Phillips offset screwdriver, check that four screws (2) are tight. Tighten. Replace if missing. . . . 3. Check latch (3) for damage. Using #1 Phillips screwdriver, check that two screws (4) (under latch) are tight. a. b. 4. Check that lampholder (5) is tight. Check that cord (6) and packing (7) are installed. Tighten. Replace missing part(s). 5. Check contact (8) for damage. If damaged, tell your supervisor. ... 6. Using #0 Phillips screwdriver, check that four screws (9) are tight. Tighten. Replace if missing. ... 7. Using #2 Phillips screwdriver, check that screw (10) is tight. Tighten. Replace if missing. ... 8. Using 5/64” Allen wrench, check that setscrew (11) is tight. Tighten. Replace if missing. ... Maintenance Action GO TO FRAME 5 Para 3-6 Cont 3-38 Vol II Replace latch if damaged. Tighten. Replace if missing. Reference Para 7-20 ... Para 7-23 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-6 Cont Vol II 3-39 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) FRAME 5 Maintenance Action Procedure Step Reference 1. Using .050" Allen wrench, check that setscrew (1) is tight. Tell your supervisor. if setscrew is not tight. . . . 2. Check that plug (2) is not missing. Tell your supervisor, if plug is missing. . . . 3. Without pulling out on boresight knobs (3), check that each knob is firmly seated against fixed clutch. If knob slips on clutch, replace knob assembly. Para 7-26 4. Pull out on each boresight knob (3). Turn each knob (3) and check for binding. Replace knob assembly if binding. Para 7-26 5. Check that two scales (4) can be read. If scales cannot be read, replace knob assembly. Para 7-26 6. Check that identification plate (5) can be read and is not damaged. Clean. If plate cannot be read, tell your supervisor. 7. Using # 1 Phillips screwdriver, check that four screws (6) are tight. Tighten. Replace if missing. 8. Using .050” Allen wrench, Tighten. Replace if missing. check that three setscrews (7) are tight. GO TO FRAME 6 Para 3-6 Cont 3-40 Vol II ... . . . TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-6 Cont Vol II 3-41 TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) Procedure Maintenance Action Reference Check that switch (1) moves to ON and OFF positions without binding, If binding, tell your supervisor. . . . Check that plug (2) is present. If missing, tell your supervisor. . . . Look into hole (3) and check that plunger (4) is present. If missing, tell your supervisor. . . . Using #1 Phillips screwdriver, check that four screws (5) are tight. Tighten. Replace if missing. . . . Using #2 Phillips screwdriver, check that four screws (6) are tight. Tighten. Replace if missing. . . . Using .050" Allen wrench, check that two setscrews (7) are tight. Tighten. Replace if missing. . . . NOTE FOLLOW-ON MAINTENANCE: Correct faults listed on DA Form 2404 that may affect the checkout procedure. Do checkout procedure (Vol I, para 2-5). END OF TASK Para 3-6 Cont 3-42 Vol II TM 9-1240-380-34 3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT) Para 3-6 Cont Vol II 3-43/(3-44 blank) TM 9-1240-380-34 CHAPTER 4 H E A D A S S E M B L Y MAINTENANCE PROCEDURES Section 1. GENERAL 4-1. SCOPE This chapter gives maintenance procedures for the head assembly. 4-2. LIST OF HEAD ASSEMBLY ITEMS CONTAINED IN THIS CHAPTER Item Valve Stem and Valve Core Arm Assembly and Packing Hooks Window and Preformed Packing Screw (Machine Thread Plug) and Gasket Plate Assembly Figure Index No. Reference (para) 1 2 4-3 4-6 4-9 4-12 4-15 4-18 3 4 5 6 Para 4-1 4-1/(4-2 blank) TM 9-1240-380-34 Section 2. VALVE STEM AND VALVE CORE 4-3. VALVE STEM AND VALVE CORE MAINTENANCE PROCEDURES INDEX Reference (para) Task Removal Installation 4-4. 4-4 4-5 VALVE STEM AND VALVE CORE REMOVAL TOOLS: 3/8" and 7/16" open end wrench Valve core wrench’ PERSONNEL: One EQUIPMENT CONDITION: Head assembly on work bench Procedure Step 1. Using 7/16" wrench, remove valve (1) from head assembly (2). 2. Using 7/16" and 3/8” wrenches, remove cap (3) from valve stem (4). 3. Remove strap (5) from valve stem (4) and cap (3). 4. Using valve core wrench, remove valve core (6) from valve stem (4). END OF TASK Para 4-3 Vol II 4-3 TM 9-1240-380-34 4-5. VALVE STEM AND VALVE CORE INSTALLATION TOOLS: 7/16“ and 3/8” open end wrench Valve core wrench SUPPLIES: Sealing compound (item 8, App. A) PERSONNEL: One REFERENCES: JPG 41C for sealing EQUIPMENT CONDITION: Valve assembly parts and head assembly on work bench FRAME 1 Procedure Step 1. Using valve core wrench, put valve core (1) in valve stem (2) and tighten. 2. Put strap (3) on valve stem (2) and cap (4). 3. Using 7/16” and 3/8” wrenches, put cap (4) on valve stem (2). 4. Put sealing compound on threads of valve stem (2) (JPG). 5. Using 7/16“ wrench, put valve (5) in head assembly (6) and tighten. NOTE I FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-2). END OF TASK Para 4-5 4-4 Vol II TM 9-1240-380-34 4-5. VALVE STEM AND CORE INSTALLATION (CONT) Vol II Para 4-5 Cont 4-5 TM 9-1240-380-34 Section 3. ARM ASSEMBLY AND PACKING 4-6. ARM ASSEMBLY AND PACKING MAINTENANCE PROCEDURES INDEX 4-7. Task Reference (para) Removal Installation 4-7 4-8 ARM ASSEMBLY AND PACKING REMOVAL TOOLS: 4 oz ball peen hammer 3/32” pin drive punch 5/64” socket head screw key (Allen wrench or equivalent) #2 cross tip screwdriver ( Phillips type) 0.070 jewelers screwdriver SUPPLIES: Cleaning solvent (item 13, App. A) PERSONNEL: One REFERENCES: JPG 41C for cleaning EQUIPMENT CONDITION: Head assembly on work bench F RAME 1 Procedure Step NOTE Pin (1) is tapered and can be removed one way only. 1. Using punch and hammer, remove pin (1) from arm assembly (2). 2. Using Allen wrench, remove setscrew (3) and arm assembly (2). 3. Using #2 Phillips screwdriver, remove thirteen screws (4) and thirteen washers (5) and cover (6) from two locaitng pins (7). 4. Using cleaning solvent, remove old sealing compound from threads of screw (4). 5. Using jewelers screwdriver, remove packing (8) from groove ( 9). END OF TASK Para 4-6 4-6 Vol II TM 9-1240-380-34 4-7. ARM ASSEMBLY AND PACKING REMOVAL (CONT) Para 4-7 Cont Vol II 4-7 TM 9-1240-380-34 4-8. ARM ASSEMBLY AND PACKING INSTALLATION TOOLS: 4 oz ball peen hammer 5/64” socket head screw key (Allen wrench or equivalent) #2 cross tip screwdriver ( Phillips type) 4 oz soft faced hammer SUPPLIES: Sealing compound (items 8, 10, 11, App. A) Grease (item 4, App. A) PERSONNEL: One REFERENCES: JPG 41C for lubricating EQUIPMENT CONDITION: Head assembly on work bench FRAME 1 Procedure Step 1. Put a small amount of grease on packing (1) (JPG). 2. Using your fingers, install packing (1) in groove (2) of cover (3). 3. Put sealing compound (item 10, App. A) where surface of cover (3) meets with surface of head assembly (4) and on threads of screws (5). Using soft faced hammer, place cover (3) onto locating pins (6). Using screwdriver, install thirteen washers (7) and thirteen screws (5) in head assembly (4). 4. 5. 6. Place arm assembly (8) on shaft (9) of head assembly (4). Make sure holes in arm assembly (8) and shaft (9) are in line. 7. Put sealing compound (item 11, App. A) on drive pin (10). NOTE Pin (10) is tapered and can only be driven in one way. 8. Using ball peen hammer, drive pin (10) into holes. 9. Put sealing compound (item 8, App. A) on threads of setscrew (11). 10. Using 5/64” Allen wrench, install setscrew (11). NOTE FOLLOW-ON MAINTENANCE Do checkout procedure ( Vol 1, para 2-2). END OF TASK Para 4-8 4-8 Vol II TM 9-1240-380-34 4-8. ARM ASSEMBLY AND PACKING INSTALLATION (CONT) Para 4-8 Cont Vol II 4-9 TM 9-1240-380-34 Section 4. HOOKS HOOKS MAINTENANCE PROCEDURES INDEX 4-9. Reference (para) Task 4-10 4-11 Removal Installation 4-10. HOOKS REMOVAL TOOLS: #2 cross tip screwdriver ( Phillips type) 4 oz ball peen hammer 1/8” punch PERSONNEL: One EQUIPMENT CONDITION: assembly on work bench FRAME 1 Step Procedure 1. Using punch and hammer, remove two pins (1). 2. Using screwdriver, remove two screws (2), two washers (3), and hook (4) from head assembly (5). Using screwdriver, remove two screws (6), two washers (7), hook (8), and shim (9) from head assembly (5). 3. END OF TASK Para 4-9 4-10 Vol II TM 9-1240-380-34 4-10. HOOKS REMOVAL (CONT) Para 4-10 Cont Vol II 4-11 TM 9-1240-380-34 4-11. HOOKS INSTALLATION TOOLS: #2 cross tip screwdriver (Phillips type) 4 oz ball peen hammer PERSONNEL One EQUIPMENT CONDITION: Head assembly on work bench FRAME 1 Procedure Step 1. While holding hook (1) in place, use screwdriver to install two washers (2) and two screws (3) in head assembly (4) (Do not tighten). 2. Using hammer, drive in two pins (5). 3. Using screwdriver, tighten two screws (3). 4, While holding shim (6) and hook (7) in place, using screwdriver, install two washers (8) and two screws (9) in head assembly (4). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-2). END OF TASK Para 4-11 4-12 Vol II TM 9-1240-380-34 4-11. HOOKS INSTALLATION (CONT) Vol II Para 4-11 Cont 4-13 TM 9-1240-380-34 Section 5. WINDOW AND PREFORMED PACKING WINDOW AND PREFORMED PACKING MAINTENANCE PROCEDURES INDEX 4-12. Reference (para) Task 4-13 4-14 Removal Installation WINDOW AND PREFORMED PACKING REMOVAL 4-13. TOOLS: #0 cross tip screwdriver ( Phillips type) 1/8” flat tip screwdriver SUPPLIES: Dry cleaning solvent (item 13, App. A) Cloth (item 3, App. A) PERSONNEL: One REFERENCES: JPG 4lC for cleaning EQUIPMENT CONDITION: Head assembly on work bench FRAME 1 Procedure Step Using #0 Phillips screwdriver, remove four screws (1) and two clamps (2). Using #0 Phillips screwdriver, remove four screws (3), two clamps (4), and observation window (5) from head assembly (6). Using cloth and cleaning solvent, clean old sealing compound from housing of head assembly (6) and observation window (5) (JPG). Remove preformed packing (7). Use 1/8” screwdriver if necessary. Using cloth and cleaning solvent, clean old adhesive from head assembly (6) (JPG). END OF TASK Para 4-12 4-14 Vol II TM 9-1240-380-34 4-13. WINDOW AND PREFORMED PACKING REMOVAL (CONT) Para 4-13 Cont Vol II 4-15 TM 9-1240-380-34 WINDOW AND PREFORMED PACKING INSTALLATION 4-14. TOOLS: #0 cross tip screwdriver (Phillips type) SUPPLIES: Sealing compound (item 8, App. A) Dry cleaning solvent (item 13, App. A) Adhesive ( item 1, App. A) Cloth (item 3, App. A) PERSONNEL: One REFERENCES: JPG 41C for Using sealing compound Using adhesive Cleaning EQUIPMENT CONDITION: Head assembly on work bench Procedure Put adhesive on rear surface of preformed packing (l) (JPG). Install preformed packing (1) in head assembly (2). Using cloth and cleaning solvent, wipe off excess adhesive from head assembly (2) (JPG). Put a bead of sealing compound in groove of observation window mounting surface (3) (JPG). Put a small amount of sealing compound on threads of eight screws (4) (JPG). With bevel side up, position observation window (5) against mounting surfaces (3). While holding four clamps (6 and 7) in place with bevel side against observation window, use screwdriver to put in and tighten screws (4). Using cloth and cleaning solvent, wipe off excess sealing compound from observation window (5) (JPG). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-2). END OF TASK Para 4-14 4-16 Vol II TM 9-1240-380-34 4-14. WINDOW AND PREFORMED PACKING INSTALLATION (CONT) Para 4-14 Cont Vol II 4-17 TM 9-1240-380-34 Section 6. SCREW (MACHINE THREAD PLUG) AND GASKET 4-15. SCREW (MACHINE THREAD PLUG) AND GASKET MAINTENANCE PROCEDURES INDEX Task Reference (para) Removal Installation 4-16. 4-16 4-17 SCREW (MACHINE THREAD PLUG) AND GASKET REMOVAL TOOLS: 3/8" flat tip screwdriver PERSONNEL: One EQUIPMENT CONDITION: Head assembly on work bench FRAME 1 Procedure Step 1. Using screwdriver, remove machine thread plug (1) and gasket (2) from head assembly (3). END OF TASK Para 4-15 4-18 Vol II TM 9-1240-380-34 4-17. SCREW (MACHINE THREAD PLUG) AND GASKET INSTALLATION TOOLS: 3/8” flat tip screwdriver PERSONNEL: One EQUIPMENT CONDITION: Head assembly on work bench FRAME 1 Procedure Step 1. Put gasket (1) on machine thread plug (2). 2. Using screwdriver, install machine thread plug (2) and gasket (1) in head assembly (3). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-2). END OF TASK Para 4-17 Vol II 4-19 TM 9-1240-380-34 Section 7. PLATE ASSEMBLY 4-18. PLATE ASSEMBLY MAINTENANCE PROCEDURES INDEX Reference (para) Task 4-19 4-20 4-21 4-22 Removal Disassembly Assembly Installation . 4-19. PLATE ASSEMBLY REMOVAL TOOLS: #2 cross tip screwdriver (Phillips type) 4 oz ball peen hammer 1/8” punch PERSONNEL: One EQUIPMENT CONDITION: Head assembly on work bench FRAME 1 Procedure Step Using screwdriver, remove ten screws ( 1). Pull and remove plate assembly (2) from head assembly (3). Look at two locator pins (4). If bent or damaged, using punch and hammer, remove two locator pins (4) from head assembly (3). END OF TASK Para 4-18 4-20 Vol II TM 9-1240-380-34 4-19. PLATE ASSEMBLY REMOVAL (CONT) Para 4-19 Cont Vol II 4-21 TM 9-1240-380-34 4-20. PLATE ASSEMBLY DISASSEMBLY TOOLS: #0 cross tip screwdriver ( Phillips type) 4 oz ball peen hammer 1/16” punch 5/8” open end wrench PERSONNEL: One EQUIPMENT CONDITION: Plate assembly on work bench Procedure Step 1. Using punch and hammer, remove two pins (1) from two nuts (2) and two studs (3). 2. Using wrench, unscrew and remove two nuts (2). 3. Using hands, unscrew two wing nuts (4). 4. Using screwdriver, unscrew and remove six screws (5) and six washers (6) from two studs (3). 5. Remove two studs (3) from plate assembly (7). END OF TASK Para 4-20 4-22 Vol II TM 9-1240-380-34 4-21. PLATE ASSEMBLY ASSEMBLY TOOLS: #0 cross tip screwdriver ( Phillips type) - 4 oz ball peen hammer 1/8” punch 5/8” open end wrench PERSONNEL: One EQUIPMENT CONDITION: Plate assembly parts on work bench FRAME 1 Step Procedure 1. Put two studs (1) through two holes (2) in plate assembly (3). 2. Line up the holes in the rim of the studs (1) with the holes in the back of the plate assembly (3). Using screwdriver, install six washers (4) and six screws (5). 3. Using hands, screw two wing nuts (6) on to the two studs (1). 4. Using wrench, screw two nuts (7) on the two studs (1). Line up the holes in the nuts (7) with the holes in the studs (1). 5. Using punch and hammer, install two pins (8) through nuts (7) and studs (1). END OF TASK Para 4-21 Vol II 4-23 TM 9.1240-380-34 4-22. PLATE ASSEMBLY INSTALLATION TOOLS: #2 cross tip screwdriver ( Phillips type) 4 oz ball peen hammer 1/8” punch SUPPLIES: Sealing compound (item 10, App. A) PERSONNEL: One REFERENCES: JPG 41C for using sealing compound EQUIPMENT CONDITION: Head assembly and plate assembly on work bench FRAME 1 Procedure Step 1. If two locator pins (1) are missing in head assembly (2), using punch and hammer, install two pins (1). 2. 3. 4. Put plate assembly (3) on pins (1). Put sealing compound (item 10, App. A) on threads of screws (4). Using screwdriver, install ten screws (4). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-2 ). END OF TASK Para 4-22 4-24 Vol II TM 9-1240-380-34 4-22. PLATE ASSEMBLY INSTALLATION (CONT) Para 4-22 Cont Vol II 4-25 TM 9-1240-380-34 5-0 Vol II TM 9-1240-38034 CHAPTER 5 BODY ASSEMBLY MAINTENANCE PROCEDURES Section 1. GENERAL 5-1. SCOPE This chapter gives maintenance procedures for the body assembly. 5-2. LIST OF BODY ASSEMBLY ITEMS CONTAINED IN THIS CHAPTER Item Housing Packing Strike Housing Assembly and Related Parts Deflection Knob Assembly Elevation Knob Assembly Valve Stem and Valve Core Eyepiece Assembly Vol II Figure Index No. Reference (para) 1 2 3 4 5 5-3 5-6 5-9 5-12 5-15 5-18 5-21 5-24 Para 5-1 5-1 TM 9-1240-380-34 Section 2. HOUSING PACKING 5-3. HOUSING PACKING MAINTENANCE PROCEDURES INDEX Reference (para) Task Removal installation 5-4. 5-4 5-5 HOUSING PACKING REMOVAL T O O L S : 9/64’” socket head screw key (Allen wrench or equivalent) 1/8” punch 4 oz ball peen hammer EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Step 1. Procedure Using hammer and punch, remove pin (1) in direction shown by arrow. Using punch and hammer, drive pin (2) in direction of arrow for about 1/4” only. 2“ 3. Using Allen wrench, remove two screws (3). 4. Remove lower housing (4) from upper housing (5). 5. Remove packing (6) from lower housing (4). END OF TASK Para 5-3 5 - 2 Vol II TM 9-1240-380-34 5-4. HOUSING PACKING REMOVAL (CONT) Para 5-4 Cont Vol II 5-3 TM 9-1240-380-34 HOUSING PACKING INSTALLATION 5-5. TOOLS: 9/64” socket head screw key (Allen wrench or equivalent) 1/8” punch 1/4” flat tip screwdriver 4 oz ball peen hammer SUPPLIES: Grease (item 4, App. A) PERSONNEL: One REFERENCES: JPG 41C for lubricating EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Procedure Step 1. Put grease on surfaces of packing (1) (JPG). 2. Install packing (1) in groove of housing (2). 3. Place housing (2) onto housing (3) and make sure screw holes are in line. 4. Using Allen wrench, install two screws (4) but do not tighten. 5. Using punch and hammer, install pin (5). 6. Using screwdriver, pry pin (6) into mounting hole. 7. Using Allen wrench, tighten two screws (4). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-3). END OF TASK Para 5-5 5 - 4 Vol II TM 9-1240-380-34 5-5. HOUSING PACKING INSTALLATION (CONT) Vol II Para 5-5 Cont 5-5 TM 9-1240-380-34 Section 3. LATCH LATCH MAINTENANCE PROCEDURES INDEX 5-6. Reference (para) Task Removal Installation 5-7 5-8 LATCH REMOVAL 5-7. TOOLS: Long nose pliers # 1 cross tip screwdriver ( Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Step Procedure NOTE Cotter pin (1) is not used with latch (2). Begin at step 2 when replacing latch (2). 1. Using pliers, straighten ends of cotter pin (1) and remove from latch (3). 2. Using screwdriver, remove two screws (4), two washers (5), and latch (2) or (3) from body assembly (6). END OF TASK Para5-6 5-6 Vol II TM 9-1240-380-34 5-7. LATCH REMOVAL (CONT) Para 5-7 Cont Vol II 5-7 TM 9-1240-380-34 5-8. LATCH INSTALLATION TOOLS: Long nose pliers # 1 cross tip screwdriver (Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Procedure Step NOTE Cotter pin (1) is not used with latch (2). Begin at step 3 when installing latch (2). 1. Open latch (3) as shown in picture and put in cotter pin (1). 2. Using pliers, bend ends of cotter pin (1) to prevent cotter pin (1) from coming out of latch (3). 3. While holding latch (2) or (3) in place, use screwdriver to install two screws (4) and two washers (5) in body assembly (6). . Para 5-8 5-8 END OF TASK Vol II TM 9-1240-380-34 5-8. LATCH INSTALLATION (CONT) Para 5-8 Cont Vol II 5-9 TM 9-1240-380-34 Section 4. STRIKE 5-9. STRIKE MAINTENANCE PROCEDURES INDEX Reference (para) Task Removal Installation 5-10. 5-10 5-11 STRIKE REMOVAL TOOLS: # 1 cross tip screwdriver ( Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Body assembly on work bench Procedure Using screwdriver, remove two screws (1), two washers (2), and strike (3) from body assembly (4). END OF TASK Para 5-9 5-10 Vol II TM 9-1240-380-34 5-11. STRIKE INSTALLATION TOOLS: #1 cross tip screwdriver (Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Step 1. Procedure While holding strike (1) in place, use screwdriver to install two washers (2) and two screws (3) in body assembly (4). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-3). END OF TASK Vol II Para 5-11 5-11 TM 9-1240-380-34 Section 5. HOUSING ASSEMBLY 5-12. HOUSING ASSEMBLY MAINTENANCE PROCEDURES INDEX Task Reference (para) Removal Installation 5-13. 5-13 5-14 HOUSING ASSEMBLY REMOVAL TOOLS: # 1 cross tip screwdriver (Phillips type) PERSONNEL: One Para 5-12 5-12 Vol II TM 9-1240-380-34 5-14. HOUSING ASSEMBLY INSTALLATION TOOLS: # 1 cross tip screwdriver ( Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Step Procedure 1. Put clamp (1) around wires (2). 2. While holding housing assembly (3) and clamp (1) in place, use screwdriver to install three washers (4) and three screws (5) in body assembly (6). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure (Vo1 I. para 2-3). I END OF TASK Para 5-14 Vol II 5-13 TM 9-1240-380-34 Section 6. DEFLECTION KNOB ASSEMBLY 5-15. DEFLECTION KNOB ASSEMBLY MAINTENANCE PROCEDURES INDEX Reference (para) Task Removal Installation 5-16. 5-16 5-17 DEFLECTION KNOB ASSEMBLY REMOVAL TOOLS: # 1 cross tip screwdriver ( Phillips type) Long nose pliers Jewelers screwdriver PERSONNEL: One EQUIPMENT CONDITION: Body asembly on work bench Procedure Using Phillips screwdriver, remove four screws (1), four washers (2), and deflection boresight knob assembly (3) from body assembly (4). Using pliers, remove pin (5) from body assembly (4). Using jewelers screwdriver, remove packing (6) from deflection boresight knob assembly (3). END OF TASK Para 5-15 5-14 Vol II TM 9-1240-380-34 5-16. DEFLECTION KNOB ASSEMBLY REMOVAL (CONT) Para 5-16 Cont Vol II 5-15 TM 9-1240-380-34 DEFLECTION KNOB ASSEMBLY INSTALLATION 5-17. TOOLS: # 1 cross tip screwdriver ( Phillips type) Long nose pliers SUPPLIES: Grease (item 4, App. A) PERSONNEL: One REFERENCES: .JPG 4lC for lubricating packing EQUIPMENT CONDITION: Body assembly on work bench Procedure Put a thin film of grease on surface of packing (1) (JPG). Place packing (1) on deflection boresight knob assembly (2). Using pliers, install pin (3) in body assembly (4). Install deflection boresight knob assembly (2) into body assembly (4) with index mark near to the eyepiece. Using screwdriver, install four screws (5) with four washers (6). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-3). END OF TASK Para 5-17 5-16 Vol II TM 9-1240-380-34 5-17. DEFLECTION KNOB ASSEMBLY INSTALLATION (CONT) Para 5-17 Cont Vol II 5-17 TM 9-1240-380-34 Section 7. ELEVATION KNOB ASSEMBLY ELEVATION KNOB ASSEMBLY MAINTENANCE PROCEDURES INDEX 5-18. Reference (para) Task 5-19 5-20 Removal Installation ELEVATION KNOB ASSEMBLY REMOVAL 5-19. TOOLS: #1 cross tip screwdriver ( Phillips type) EQUIPMENT CONDITION: Body assembly on work bench Procedure NOTE If guide (1) cannot be removed with knob assembly (2), do steps 5 and 6. Using screwdriver, remove four screws (3) and four washers (4). Pull knob assembly (2), packing (5), guide (1) and packing (6) from body assembly (7). Remove packing (5) from guide (1). Remove guide (1) and packing (6) from knob assembly (2). Using screwdriver, remove four screws and adapter. Using screwdriver, pry guide (1) out from inside body assembly (7). END OF TASK Para 5-18 5-18 Vol II TM 9-1240-380-34 5-19. ELEVATION KNOB ASSEMBLY REMOVAL (CONT) Para 5-19 Cont Vol II 5-19 TM 9-1240-380-34 5-20. ELEVATION KNOB ASSEMBLY INSTALLATION TOOLS: # 1 cross tip screwdriver (Phillips type) SUPPLIES: Grease (item 4, App. A) Sealing compound (item 7, App. A) PERSONNEL: One REFERENCES: JPG 41C for Lubricating Using sealing compound EQUIPMENT CONDITION: Body assembly on work bench Procedure NOTE If adapter was removed, apply a small amount of sealing compound to mating surfaces of adapter (JPG). Using screwdriver, install adapter to body with four screws. Put a thin film of grease on surface of packings (1) and (2) (JPG). Install packing (1) on guide (3). Install packing (1) and guide (3) in body assembly (4). Install packing (2) into guide (3). Install boresight knob assembly (5) into body assembly (4) with index mark facing eyepiece. Using screwdriver, install four washers (6) and four screws (7). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-3). END OF TASK Para 5-20 5-20 Vol II TM 9-1240-380-34 5-20. ELEVATION KNOB ASSEMBLY INSTALLATION (CONT) Para 5-20 Cont Vol II 5-21 TM 9-1240-380-34 Section 8. VALVE STEM AND VALVE CORE 5-21. VALVE STEM AND VALVE CORE MAINTENANCE PROCEDURES INDEX Task Reference (para) Removal Installation 5-22. 5-22 5-23 VALVE STEM AND VALVE CORE REMOVAL TOOLS: 3/8", 7/16" open end wrench Valve core wrench PERSONNEL: One EQUIPMENT CONDITION: Body assembly on work bench FRAME 1 Procedure Using 7/16” wrench, remove valve assembly (1) from body assembly (2). Using 7/16” and 3/8” wrenches, remove cap (3) from valve stem (4). Remove strap (5) from valve stem (4) and cap (3). Using valve core wrench, remove valve core (6) from valve stem (4). END OF TASK Para 5-21 5-22 Vol II TM 9-1240-380-34 5-22. VALVE STEM AND VALVE CORE REMOVAL (CONT) Vol II Para 5-22 Cont 5-23 TM 9-1240380-34 VALVE STEM AND VALVE CORE INSTALLATION 5-23. TOOLS: 7/16”, 3/8” open end wrench Valve core wrench SUPPLIES: Sealing compound (item 8, App. A) PERSONNEL: O n e REFERENCES: JPG 41C for sealing EQUIPMENT CONDITION: Valve parts and body assembly on work bench FRAME 1 Step 1. 2. Procedure Using valve core wrench, put valve core (1) in valve stem (2) and tighten. Put strap (3) on valve stem (2) and cap (4). Using 7/16” and 3/8” wrenches, put cap (4) on valve stem (2). 3. 4. Put sealing compound on threads of valve stem (2) (JPG). 5. Using 7/16” wrench, put valve (5) in body assembly (6) and tighten. NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-3). END OF TASK Para 5-23 5-24 Vol II TM 9-1240-380-34 5-23. VALVE STEM AND VALVE CORE INSTALLATION (CONT) Para 5-23 Cont Vol II 5-25 TM 9-1240-380-34 Section 9. EYEPIECE ASSEMBLY EYEPIECE ASSEMBLY MAINTENANCE PROCEDURES INDEX 5-24. Tank Reference (para) Disassembly Assembly 5-25 5-26 EYEPIECE ASSEMBLY DISASSEMBLY 5-25. TOOLS: 0.070” flat tip jewelers screwdriver SUPPLIES: Cleaning solvent (item 13, App. A) PERSONNEL: One REFERENCES: JPG 41C for cleaning EQUIPMENT CONDITION: Body assembly on work bench Procedure Using screwdriver, remove two setscrews (1) and index (2). Using screwdriver, remove three setscrews (3) and scale (4). Using screwdriver, remove setscrew (5) from ring (6). Using your hand, unscrew ring (6) from adapter (7). Using cleaning solvent, remove old sealing compound from threads of setscrew (5) and ring (6). Using your hand, unscrew adapter (7) from eyepiece assembly housing (8). GO TO FRAME 2 Para 5-24 5-26 Vol II TM 9-1240-380-34 5-25. EYEPIECE ASSEMBLY DISASSEMBLY (CONT) Para 5-25 Cont Vol II 5-27/(5-28 blank) TM 9-1240-380-34 5-25. EYEPIECE ASSEMBLY DISASSEMBLY (CONT) FRAME 2 Procedure Step 1. Using screwdriver, pry stop (1) from eyepiece assembly housing (2). (Location of stop may vary around eyepiece assembly. ) Take care when handling and removing cell (3). 2. Carefully pull cell assembly (3) from eyepiece housing (2). 3. Remove packing (4) from eyepiece assembly housing (2). END OF TASK Para 5-25 Cont Vol II 5-29 TM 9-1240-380-34 EYEPIECE ASSEMBLY ASSEMBLY 5-26. TEST EQUIPMENT: Dioptometer TOOLS: 0.070” flat tip jewelers screwdriver SUPPLIES: Grease (item 4, App. A) Cleaning compound (item 2, App. A) Sealing compound (item 8, App. A) Soap PERSONNEL: One REFERENCES: JPG 41C for Cleaning Lubricating Sealing lenses Using dioptometer Connecting power supply EQUIPMENT CONDITION: Body assembly on work bench Procedure Check packing (1) for wear or cracks. Clean in warm water with a mild soap. Dry (JBG). Put a thin film of grease on surface of packing (1) (JPG). Using cleaning compound, clean lens of cell assembly (2) (JPG). Install packing (1) into groove of housing (3). Install cell assembly (2) into housing (3). Make sure slot in cell (2) is in line with hole for stop (4) in housing (3). Using your hand, press stop (4) into eyepiece assembly housing (3). GO TO FRAME 2 Para 5-26 5-30 Vol II TM 9-1240-380-34 5-26. EYEPIECE ASSEMBLY ASSEMBLY (CONT) Para 5-26 Cont Vol II 5-31/5-32 blank) TM 9-1240-380-34 5-26. EYEPIECE ASSEMBLY ASSEMBLY (CONT) FRAME 2 Procedure Step 1. Install adapter (1) onto eyepiece assembly housing (2). 2. Using your hand, install ring (3) on eyepiece assembly housing (2). 3. Put a small drop of sealing compound on setscrew (4). 4. Using screwdriver, install setscrew (4). 5. Install scale (5). Using screwdriver, install three setscrews (6). 6. Install index (7). Using screwdriver, install two setscrews (8). GO TO FRAME 3 Para 5-26 Cont Vol II 5-33 TM 9-1240-380-34 EYEPIECE ASSEMBLY ASSEMBLY (CONT) 5-26. FRAME 3 Procedure Using Jewelers screwdriver, loosen two setscrews (1) on eyepiece assembly (2). Turn index (3) until index mark (4) is centered in up position. Using jewelers screwdriver, tighten two setscrews (1). Place doptometer onto eye lens (5) and while looking through dioptometer, turn knurled knob (6) until reticle (7) is sharp and clear (JPG). Remove dioptometer from eyepiece assembly (2). Using jewelers screwdriver, loosen three setscrews (8). Turn scale (9) until zero is centered on index mark (4). Using jewelers screwdriver, tighten three setscrews (8). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-3). END OF TASK Para 5-34 5-26 Cont Vol II TM 9-1240-380-34 5-26. EYEPIECE ASSEMBLY ASSEMBLY (CONT) Para 5-26 Cont Vol II 5-35 TM 9-1240-380-34 6-0 Vol II TM 9-1240-380-34 CHAPTER 6 INFRARED BODY ASSEMBLY (M36) MAINTENANCE PROCEDURES Section 1. GENERAL 6-1. SCOPE This chapter gives maintenance procedures for the infrared body assembly. 6-2. LIST OF INFRARED BODY ASSEMBLY ITEMS CONTAINED IN THIS CHAPTER High voltage. Make sure that rotary switch is set to OFF before doing any repair. Do not work on infrared body assembly in bright sunlight. Bright light and strong magnetic fields make the image converter tube work badly and may damage it if it is in bright light for a long time. Figure Index No. Item Cell Assembly Plunger, Spring, Retaining Ring and Key Eyepiece Assembly Scale Cap Assembly Electron Tube and Collar Cap Assembly, Converter and Power Supply Protective Plug, Clamp, Wire, Sleeve Assembly, Contact (Electrical), and Connector Switch Valve Stem and Valve Core Latch Contact (Electrical) Lampholder and Packing Boresight Knob Assembly and Related Parts Vol II Reference (para) 1 2 3 4 5 6 6-3 6-6 6-9 6-12 6-15 6-18 7 8 9 10 11 12 6-21 6-24 6-27 6-30 6-33 6-36 Para 6-1 6-1 TM 9-1240-380-34 Section 2. CELL ASSEMBLY CELL ASSEMBLY MAINTENANCE PROCEDURES INDEX 6-3. Reference (para) Task Removal Installation 6-4. 6-4 6-5 CELL ASSEMBLY REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: 5/64” and 3/16“ socket head screw key (Allen wrench or equivalent) 8” adjustable wrench SUPPLIES: Cleaning solvent (item 13, App. A) PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench, power off 1. Using 5/64” Allen wrench, remove setscrew (1). 2. Using cleaning solvent, remove old sealing compound from threads of setscrew (1). 3. Using 3/16” Allen wrench, remove four screws (2), four washers (3), cell assembly (4) and packing (5). 4. Using adjustable wrench, remove tube (6) and packing (7) from housing assembly (8). END OF TASK Para 6-3 6 - 2 Vol II TM 9-1240-380-34 6-4. CELL ASSEMBLY REMOVAL (CONT) Para 6-4 Cont Vol II 6-3 TM 9-1240-380-34 CELL ASSEMBLY INSTALLATION 6-5. APPLICABLE CONFIGURATIONS: M36 TOOLS: 5/64”, 3/ 16” socket head screw key (Allen wrench or equivalent ) 8” adjustable wrench SUPPLIES: Grease (item 4, App. A) Sealing compound (item 8, App. A) PERSONNEL: One REFERENCES: JPG 4lC for Sealing Lubricating EQUIPMENT CONDITION: Infrared body assembly on work bench, power off Procedure Put a thin film of grease on surface of packing (1) (JPG). Using adjustable wrench, install packing (1) and tube (2) in housing assembly (3). Put a thin film of grease on surface of packing (4) (JPG), Place packing (4) on cell assembly (5). While holding cell assembly (5) in place, use 3/16” Allen wrench to install four washers (6) and four screws (7), Put a thin film of sealing compound on threads of setscrew (8) (JPG). Using 5/64’” Allen wrench, install setscrew (8) in cell assembly (5). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-5 6 - 4 Vol II TM 9-1240-380-34 6-5. CELL ASSEMBLY INSTALLATION (CONT) Para 6-5 Cont Vol II 6-5 TM 9-1240-380.34 Section 3. PLUNGER, SPRING, RETAINING RING, AND KEY PLUNGER, SPRING, RETAINING RING, AND KEY MAINTENANCE PROCEDURES INDEX 6-6. Reference (para) Task Removal Installation 6-7 6-8 PLUNGER, SPRING, RETAINING RING, AND KEY REMOVAL 6-7. APPLICABLE CONFIGURATIONS: M36 TOOLS: Scriber Tweezers 3/ 16" flat tip screwdriver PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench FRAME 1 Procedure Using scriber, push in and hold plunger (1). Using tweezers, remove retaining ring (2) from slot in plunger (1). Spring (3) will push plunger (1) part way through hole in key While holding retaining ring (2) with tweezers, use fingers to pull plunger (1) from key Remove spring (3). Using screwdriver, remove two screws (5), and key (4), from infrared body assembly (6). Using screwdriver, remove screw (7) from key (4) and bracket (8). END OF TASK Para 6-6 6 - 6 Vol II TM 9-1240-380-34 6-7. PLUNGER, SPRING, RETAINING RING, AND KEY REMOVAL ( C O N T ) Para 6-7 Cont Vol II 6-7 TM 9-1240-380-34 PLUNGER, SPRING, RETAINING RING, AND KEY INSTALLATION 6-8. APPLICABLE CONFIGURATIONS: M36 TOOLS: Scriber Tweezers 3/16” flat tip screwdriver PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench Procedure While holding bracket (1) in slot of key (2), use screwdriver to install screw (3). While holding bracket (1) and key (2) on infrared body assembly (4), use screwdriver to install two screws (5). Using your fingers, install spring (6) into key (2). Push plunger (7) part way through hole in key (2) slot up. Using tweezers, place retaining ring (8) over plunger (7). Using scriber, press on plunger (7) and slide retaining ring (8) until it fits into groove of plunger (7). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-8 6 - 8 Vol II TM 9-1240-380-34 6-8. PLUNGER, SPRING, RETAINING RING, AND KEY INSTALLATION (CONT) Para 6-8 Cont Vol II 6-9 TM 9-1240-380-34 Section 4. EYEPIECE ASSEMBLY SCALE EYEPIECE ASSEMBLY SCALE MAINTENANCE PROCEDURES INDEX 6-9. Reference (para) Task Removal Installation 6-10. 6-10 6-11 EYEPIECE ASSEMBLY SCALE REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: 0.035'' socket head screw key (Allen wrench or equivalent) Cleaning solvent (item 13, App. A) PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench, power off FRAME 1 Procedure Step 1. Using Allen wrench, remove two setscrews (1) and index (2). 2. Using cleaning solvent, remove old sealing compound from threads of setscrew (1) and index (2). 3. Using Allen wrench, remove three setscrews (3) and scale (4). 4. Using cleaning solvent, remove old sealing compound from setscrews (3) and scale (4). END OF TASK Para 6-10 6-9 Vol II TM 9-1240-380-34 6-10. EYEPIECE ASSEMBLY SCALE REMOVAL (CONT) Para 6-10 Cont Vol II 6-11 TM 9-1240-380-34 6-11. EYEPIECE ASSEMBLY SCALE INSTALLATION APPLICABLE CONFIGUREATIONS: M36 TEST EQUIPMENT: 0-36 VDC power supply Dioptometer TOOLS: 0.035" socket head screw key (Allen wrench or equivalent) SUPPLIES: Sealing compound (item 8, App. A) PERSONNEL: One REFERENCES: JPG 41C for Sealing Using dioptometer Connecting power supply EQUIPMENT CONDITION: Infrared body assembly and eyepiece parts on work bench, power off Procedure Install scale (1) on eyepiece assembly (2). 2. Apply a thin film of sealing compound to threads of five setscrews (3, 4) (JPG). 3. Using Allen wrench, install, but do not tighten, three setscrews (3). 4, Install index (5) on eyepiece assembly (2). 5. Using Allen wrench, install, but do not tighten, two setscrews (4). GO TO FRAME 2 Para 6-11 6-12 Vol II TM 9-1240-380-34 6-11. EYEPIECE ASSEMBLY SCALE INSTALLATION (CONT) Para 6-11 Cont Vol II 6-13 TM 9-1240-380-34 6-11. EYEPIECE ASSEMBLY SCALE INSTALLATION (CONT) Procedure Using your hand, turn green ring (1) on the eyepiece assembly (2) to center of its range. Turn index (3) until index mark (4) is centered in up position. Using Allen wrench, tighten two setscrews (5). Connect power supply (Vol I, Para 2-4) to infrared body assembly (6). Set voltage to 24 VDC. Turn rotary switch (7) to 24V ON! Place dioptometer onto eye lens (8) and while looking through dioptometer, turn knurled knob (9) until reticle (10) is sharp and clear, (JPG). Turn scale (11) until zero is centered on index mark (4). Using Allen wrench, tighten three setscrews (12). Remove dioptometer from eye lens (8). Set rotary switch (7) to OFF. Set voltage to 0 VDC. Disconnect power supply (JPG). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-11 6-14 Vol II TM 9-1240-380-34 6-11. EYEPIECE ASSEMBLY SCALE INSTALLATION (CONT) Para 6-11 Cont Vol II 6-15 TM 9-1240-380-34 Section 5. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR CAP ASSEMBLY, ELECTRON TUBE AND COLLAR MAINTENANCE PROCEDURES INDEX 6-12. Reference (para) Task Removal Installation 6-13. 6-13 6-14 CAP ASSEMBLY, ELECTRON TUBE AND COLLAR REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/16” socket head screw key (Allen wrench or equivalent ) SUPPLIES: Cleaning solvent (item 13, App. A) PERSONNEL: One REFERENCES: JPG 41C for cleaning EQUIPMENT CONDITION: Infrared body assembly on work bench, power off . Step Procedure 1. Remove cap assembly (1) and gasket (2) (para 6-16). 2. Using Using 3. Allen wrench, remove two setscrews (3). cleaning solvent, remove old sealing compound from threads of setscrew (3). Do not expose electron tube (5) to sunlight. 4. assembly (4) counterclockwise. Remove eyepiece assembly Using your hand, turn eyepiece (4), electron tube (5), and collar (6). 5. Remove collar (6) from electron tube (5). END OF TASK Para 6-12 6-16 Vol II TM 9-1240-380-34 6-13. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR REMOVAL (CONT) Para 6-13 Cont Vol II 6-17 TM 9-1240-380-34 6-14. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR INSTALLATION APPLICABLE CONFIGURATIONS: M36 ‘TEST EQUIPMENT: Dioptometer 0-36 VDC power supply TOOLS: 0.035" and 1/16" socket head screw key (Allen wrench or equivalent) SUPPLIES: Sealing compound ( item 8, App. A) PERSONNEL: One REFERENCES: JPG 41C for Sealing Using dioptometer Connecting power supply EQUIPMENT CONDITION: Infrared body assembly on work bench, power off Procedure Do not expose electron tube (1) to sunlight. Install collar (2) on electron tube (1). NOTE Silvered end of electron tube must be installed first. Install electron tube (1) in infrared body assembly (3). Line up single guide pin in eyepiece assembly (4) with single slot in infrared body assembly (3). While holding infrared body assembly, push in on eyepiece assembly (4) and turn clockwise. Put a small amount of sealing compound on the threads of two setscrews (5). Using 1/16" Allen wrench, install two setscrews (5). Install cap assembly (6) and gasket (7) (para 6-17, steps 10 and 11). GO TO FRAME 2 Para 6-14 Cont 6 - 1 8 Vol II TM 9-1240-380-34 6-14. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR INSTALLATION (CONT) Para 6-14 Vol II 6-19 TM 9-1240-380-34 6-14. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR INSTALLATION (CONT) Procedure Using your hand, turn green ring (1) on the eyepiece assembly (2) to center of its range. Using 0.035"’ Allen wrench, loosen two setscrews (3) and turn index (4) until index mark (5) is centered in up position. Using Allen wrench, tighten two setscrews (3). Connect power supply (Vol I, Para 2-4) to infrared body assembly (6). Set voltage to 24 VDC. Turn rotary seitch (7) to '24V ON'. Place dioptometer onto eye lens (8) and while looking through dioptometer, turn knurled knob (9) until reticle (10) is sharp and clear (JPG). Using Allen wrench, loosen three setscrews (11). Turn scale (12) until zero is centered on index mark (5). Using 0.035” Allen wrench, tighten three setscrews (11). Remove dioptometer from eye lens (8). Set rotary switch (7) to OFF. Set voltage to 0 VDC. Disconnect power supply (JPG). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-14 Cont 6-20 Vol II TM 9-1240-380-34 6-14. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR INSTALLATION (CONT) Para 6-14 Cont Vol II 6-21 TM 9-1240-380-34 Section 6. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY MAINTENANCE PROCEDURES INDEX 6-15. Reference (para) Task 6-16 6-17 Removal and Disassembly Assembly and Installation 6-16. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY REMOVAL AND DISASSEMBLY APPLICABLE CONFIGURATIONS: M36 TOOLS: Soldering iron 1-5/8 “ tubular spanner wrench 1/1 6 “socket head screw key (Allen wrench or equivalent) P E R S O N N E L: O n e REFERENCES: JPG 41C for unsoldering wires EQUIPMENT CONDITION: Infrared body assembly on work bench, power off PRELIMINARY PROCEDURES: Remove rotary switch (para 6-22, steps 2, 3 and caution) Procedure Using your hand, turn cap assembly (1) counterclockwise and remove gasket (2). NOTE Either battery or converter may be installed. Both are removed in the same way. Remove battery or converter (3) from sleeve assembly (4). Push in and turn sleeve assembly (4) counterclockwise and remove from housing. Turn sleeve (5) slightly clockwise and remove from power supply (6). Remove spring tension washer (7). Using spanner wrench, remove externally threaded ring (8). Using Allen wrench, remove two setscrews (9). Using soldering iron, unsolder red and white wire leads from rotary switch (10) 6-22) (JPG). Remove insulator (11). END OF TASK Para 6-15 6-22 Vol II (para TM 9-1240-380-34 6-16. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY REMOVAL AND DISASSEMBLY (CONT) Vol II Para 6-16 Cont 6-23 TM 9-1240-380-34 CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY ASSEMBLY AND INSTALLATION 6-17. APPLICABLE CONFIGURATIONS: M36 TOOLS: Soldering iron 1-5/8” tubular spanner wrench 1/ 16” socket head screw key (Allen wrench or equivalent) SUPPLIES : Sealing compound (item 8, App. A) Solder (item 12, App. A) Tubing (item 15, App. A) PERSONNEL: One REFERENCES: JPG 41C for: Sealing Soldering EQUIPMENT CONDITION: Infrared body assembly on work bench, power off NOTE Do not install battery during assembly. Install insulator (1) with setscrew slot on top and aligned with setscrew hole. Put a small amount of sealing compound on threads of two setscrews (2) (JPG). Install insulator (1). Using Allen wrench, install two setscrews (2). Using soldering iron and solder, solder red and white wire leads to rotary switch (3) 6-23) (JPG). Using spanner wrench, install externally threaded ring (4). Place spring tension washer (5) on end of power supply (6). Install sleeve (7) on power supply (6) by twisting clockwise. Place sleeve assembly (8) in infrared body assembly (9) and lock in place by turning clockwise. Install converter (10) in sleeve assembly (9). Make sure small contact points out. Place gasket (11) on cap assembly ( 12). Using your hand, turn cap assembly (12) and gasket (11) clockwise into infrared body assembly (9). Para 6-17 6-24 Vol II TM 9-1240-380-34 6-17. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY ASSEMBLY AND INSTALLATION (CONT) Step Procedure NOTE FOLLOW-ON MAINTENANCE: Install rotary switch (para 6-23). Do checkout procedure (Vol I, para 2-47). END OF TASK Vol II Para 6-17 Cont 6-25/(6-26 blank) TM 9-1240-380-34 Section 7. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR 6-18. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR MAINTENANCE PROCEDURES INDEX Reference (para) Task 6-19 6-20 Removal Installation 6-19. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: 5/64”, 3/16”, 1/8”, and 1/16” socket head screw key (Allen wrench or equivalent) 0.187” spanner wrench Tweezers Wooden dowel (1” x 6“) Soldering iron 5/16”, 3/16”, and 1/4” flat tip screwdriver 5/ 16” offset screwdriver Soft face hammer SUPPLIES: Crocus cloth PERSONNEL: One REFERENCES: JPG 4lC for: Cleaning Unsoldering wires EQUIPMENT CONDITION: Infrared body assembly on work bench, power off PRELIMINARY PROCEDURES: Remove cap assembly, converter and power supply (para 6-16) Remove electron tube, eyepiece assembly, and collar (para 6-13) Para 6-18 6-27 TM 9-1240-380-34 6-19. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR REMOVAL (CONT) FRAME 1 Procedure Using 5/64” Allen wrench, remove setscrew (1). Using 3/16“ Allen wrench, remove four screws (2), four washers (3), cell assembly (4), and packing (5) from elbow assembly (6). Using 5/16“ flat tip screwdriver and 5/ 16“ offset screwdriver, remove four screws (7) and four washers (8). Be careful not to break wire connection to elbow assembly. Carefully pull housing assembly (9) away from elbow assembly (6). Using 1/16“ Allen wrench, remove two setscrews (10). Using 1/8” Allen wrench, remove setscrew (11) from elbow assembly (6). GO TO FRAME 2 Para 6-19 Cont 6-23 TM 9-1240-380-34 6-19. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR REMOVAL (CONT) Para 6-19 Cont Vol II 6-29 TM 9-1240-380-34 6-19. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR REMOVAL (CONT) FRAME 2 Step Procedure Be careful not to damage mirror (1). Do not get fingerprints or smears on mirror (1) surfaces. Using 3/16” flat tip screwdriver, remove two screws (2) and two clamps (3). Using tweezers, pull contact (4) and wire (5) from sleeve assembly (6). Using soldering iron, unsolder wire (5) from contact (4) (JPG). using tweezers, pull wire (5) back through sleeve assembly (6) and from around mirror (1). Using your hand, unscrew sleeve assembly (6) from elbow assembly (7). Using spanner wrench, remove protective plug (8). Using wooden dowel and hammer. push out connector (9) and wire (5) from elbow assembly (7). Check connector (9) for corrosion, If corroded, clean with crocus cloth (JPG). END OF TASK Para 6-19 Cont 6 - 3 0 Vol II TM 9-1240-380-34 6-19. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR REMOVAL (CONT) Para 6-19 Cont Vol II 6-31/(6-32 blank TM 9-1240-380-34 6-20. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR INSTALLATION APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/8”, 1/16”, 3/16”, 5/64” socket head screw key (Allen wrench or equivalent) 3/16”, 1/4”, 5/16” flat tip screwdriver 5/16” offset screwdriver 1 /4” drift pin 4 oz ball peen hammer Soldering iron 0.187” spanner wrench SUPPLIES: Solder (item 12, App. A) Sealing compound (item 8, App. A) Grease (item 4, App. A) Tubing (item 15, App. A) PERSONNEL: One REFERENCES: JPG 4lC for Lubricating Sealing Soldering wires EQUIPMENT CONDITION: Infrared body assembly on work bench, power off Para 6-20 Vol II 6-33 TM 9-1240-380-34 6-20. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR INSTALLATION (CONT) FRAME 1 Procedure Step 1. Thread wire (1) through holes in elbow assembly (2). 2. Using drift pin and hammer, install connector (3) in elbow assembly (2) and align hole in connector with setscrew hole. 3. Using 1/16” Allen wrench, install two setscrews (4) in elbow assembly (2) to fasten connector (3). 4. Put sealing compound on all surfaces of plug (5) (JPG). 5. Using spanner wrench, install plug (5). Be careful not to damage mirror (6). Do not get fingerprints or smears on mirror surfaces. 6. Using tweezers, thread wire (1) behind mirror (6). 7. Using your hand, screw sleeve assembly (7) onto elbow assembly (2). 8. Using tweezers, thread wire (1) through sleeve assembly (7). 9. Using soldering iron and solder, solder wire (1) to contact (8) (JPG) with slots and raised portion facing out. 10. Using tweezers, pull wire (1) back through sleeve assembly (7) until contact (8) is seated. 11. Using 3/16" flat tip screwdriver, hold down wire (1) with two clamps (9) and two screws (10). GO TO FRAME 2 Para 6-20 C o n t 6-34 Vol II TM 9-1240-380-34 6-20. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR INSTALLATION (CONT) Para 6-20 Cont Vol II 6-35 TM 9-1240-380-34 6-20. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR INSTALLATION (CONT) FRAME 2 Procedure Step 1. Check that packing (1) is seated in groove. Check packing (1) for wear or cracks. Replace if damaged. 2. Put a thin film of grease on surface of packing (1) (JPG). 3. While holding housing assembly (2) in place, use 5/16“ flat tip screwdriver and 5/16“ offset screwdriver to install four washers (3) and four screws (4). 4. Put a thin film of grease on surface of packing (5) (JPG). 5. Place packing (5) on cell assembly (6). 6. While holding cell assembly (6) in place, use 3/16" Allen wrench to install four washers (7) and four screws (8) in elbow assembly (9). 7. Put a thin film of sealing compound on threads of setscrew (10) (JPG). 8. Using 5/64” Allen wrench, install setscrew (10). 9. Using 1/8” Allen wrench, install setscrew (11) in elbow assembly (9). NOTE FOLLOW-ON MAINTENANCE: Assemble cap assembly, converter, and power supply (para 6- 17). Install cap assembly, electron tube and collar (para 6-14). Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-20 Cont 6-36 Vol II TM 9-1240-380-34 6-20. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT (ELECTRICAL), AND CONNECTOR INSTALLATION (CONT) Para 6-20 Cont Vol II 6-37/(6-38 blank) TM 9-1240-380-34 Section 8. SWITCH 6-21. SWITCH MAINTENANCE PROCEDURES INDEX Reference (para) Task 6-22 6-23 Removal Installation 6-22. SWITCH REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: 12” blade screwstarter 1/4” flat tip screwdriver .050” socket head screw key (Allen wrench or equivalent) Soldering iron 3/8” open end wrench Tweezers PERSONNEL: One REFERENCES: JPG 4lC for Tagging wires Unsoldering wires EQUIPMENT CONDITION: Infrared body assembly on work bench, power off PRELIMINARY PROCEDURES: Remove cap assembly, converter, and power supply (para 6-16, steps 1, 2 and 3) Para 6-21 Vol II 6-39 TM 9-1240-380-34 6-22. SWITCH REMOVAL (CONT) FRAME 1 Procedure Step 1. Using Allen wrench, remove setscrews (1) from knob (2). Remove knob (2). 2. Using screwdriver, remove three screws (3) and three washers (4). 3. Using screwdriver, remove one screw (5) and one washer (6). Be careful when removing rotary switch because terminals are very small and break easily. 4. Using wrench, remove nut (7) and washer (8). Remove plate (9) and “O” ring (10) from switch (11). 5. Tag four wires connected to terminals of rotary switch (11) (JPG). 6. Using soldering iron, holding wire with tweezers, unsolder four wires connected to terminals of rotary switch (11) (JPG). Remove rotary switch (11). 7. Using screwstarter and tweezers, remove screw (12), washer (13), lug terminal (14), and spring tension clip (15). END OF TASK Para 6-22 Cont 6-40 Vol II TM 9-1240-380-34 6-22. SWITCH REMOVAL (CONT) Para Vol II 6-22 Cont 6-41 TM 9-1240-380-34 SWITCH INSTALLATION 6-23. APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/4” flat tip screwdriver .050” socket head screw key (Allen wrench or equivalent) 12” blade screwstarter 3/8” open end wrench Tweezers SUPPLIES: Solder (item 12, App. A) Sealing compound (item 8, App. A) Tubing (item 15, App. A) REFERENCES: JPG 4lC for Putting on compound Soldering wires EQUIPMENT CONDITION: Infrared body assembly on work bench FRAME 1 Procedure Step 1. Install washer (1), lug terminal (2), and spring tension clip (3) on screw (4). 2. Using screwstarter, carefully install screw (4) through rotary switch housing of infrared body assembly (5). 3. Using soldering iron, solder four wires to terminals of rotary switch (6) tagged during removal procedure. Be careful when installing rotary switch because terminals are very small and break easily. 4. 5. Install “O” ring (7) onto rotary switch (6). Place plate (8) on rotary switch (6). Using wrench, install washer (9) and nut (10). 6. Put a small amount of sealing compound on threads of four screws (11 and 12) (JPG). 7. While holding plate (8) in place, using screwdriver, install three screws (11) and three washers (13). 8. Using screwdriver, install one screw (12) and one washer ( 14). 9. Install knob (15) on rotary switch (6). Para 6-23 6-42 Vol II TM 9-1240-380-34 6-23. SWITCH INSTALLATION (CONT) Procedure Step 10. Put a small amount of sealing compound on threads of setscrews (16) in knob (15) (JPG). Using Allen wrench, install setscrews (16) into knob (15). NOTE FOLLOW-ON MAINTENANCE: Install cap assembly, converter, and power supply assembly (para 6-17, steps 8, 9, and 11). Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-23 Cont Vol II 6-43 TM 9-1240-380-34 Section 9. VALVE STEM AND VALVE CORE 6-24. VALVE STEM AND VALVE CORE MAINTENANCE PROCEDURES INDEX Task Reference (para) Removal Assembly 6-25. 6-25 6-26 VALVE STEM AND VALVE CORE REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: 3/8" and 7/ 16" open end wrench Valve core wrench SUPPLIES: Cleaning solvent (item 13, App. A) Cloth (item 3, App. A) PERSONNEL: One REFERENCES: JPG 41C for cleaning EQUIPMENT CONDITION: Infrared body assembly on work, bench Step Procedure 1. Using 7/16” wrench, remove valve (1) from infrared body assembly (2). 2. Using 7/16” and 3/8” wrenches, remove cap (3) from valve stem (4). 3. Remove strap (5) from valve stem (4) and cap (3). 4. Using valve core wrench, remove valve core (6) from valve stem (4). 5. Using cleaning solvent, remove old sealing compound from threads of valve stem (4). END OF TASK Para 6-24 6-44 Vol II TM 9-1240-380-34 6-25. VALVE STEM AND VALVE CORE REMOVAL (CONT) Vol II Para 6-25 Cont 6-45 TM 9-1240-380-34 VALVE STEM AND VALVE CORE INSTALLATION 6-26. APPLICABLE CONFIGURATIONS: M36 TOOLS: 7/16“ and 3/8” open end wrench Valve core wrench SUPPLIES: Sealing compound (item 8, App. A) PERSONNEL: One REFERENCES: JPG 4lC for sealing EQUIPMENT CONDITION: Valve parts and head assembly on work bench Procedure Step 1. Using valve core wrench, put valve core (1) in valve stem (2) and tighten. 2. Put strap (3) on valve stem (2) and cap (4). 3. Using 7/16” and 3/8” wrenches, put cap (4) on valve stem (2). 4. Put sealing compound on threads of valve stem (2) (JPG). 5. Using 7/16" wrench, put valve (5) in infrared body assembly (6) and tighten. NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-26 6-46 Vol II TM 9-1240-380-34 6-26. VALVE STEM AND VALVE CORE INSTALLATION (CONT) Para 6-26 Cont Vol II 6-47 TM 9-1240-380-34 Section 10. LATCH LATCH MAINTENANCE PROCEDURES INDEX 6-27. Reference (para) Task Removal Installation 6-28. 6-28 6-29 LATCH REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/4” flat tip screwdriver PERSONNEL: One EQUIPMENT CONDITION: Infrared bodyassembly on work bench FRAME 1 Step 1. Procedure Using screwdriver, remove two screws (1), two washers (2), and latch (3) from infrared body assembly (4). END OF TASK Para 6-27 6-48 Vol II TM 9-1240-380-34 6-29. LATCH INSTALLATION APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/4” flat tip screwdriver PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench FRAME 1 Procedure Step 1. While holding latch (1) in place, use screwdriver to install two screws (2) and two washers (3) into infrared body assembly (4). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Vol II Para 6-29 6-49 TM 9-1240-380-34 Section 11. CONTACT (ELECTRICAL) CONTACT (ELECTRICAL) MAINTENANCE PROCEDURES INDEX 6-30. Reference (para) Task 6-31 6-32 Removal Installation 6-31. CONTACT (ELECTRICAL) REMOVAL APPLICABLE CONFIGURATIONS: M36 TOOLS: .050” socket head screw key (Allen wrench or equivalent) Soldering iron PERSONNEL: One REFERENCES: JPG 4lC for Tagging wires Unsoldering wires EQUIPMENT CONDITION: Infrared body assembly on work bench, power off Procedure Step 1. Using Allen wrench, remove setscrew (1) from housing of infrared body assembly (2). 2. Lift electrical contact (3) from housing of infrared body assembly (2). 3. Tag two wires (4). Using soldering iron, unsolder two wires (4) from terminals of electrical contact (3) (JPG). END OF TASK Para 6-30 6-50 Vol II TM 9-1240-380-34 6-31. CONTACT (ELECTRICAL) REMOVAL (CONT) Para 6-31 Cont Vol II 6-51 TM 9-1240-380-34 CONTACT (ELECTRICAL) INSTALLATION 6-32. TOOLS: Soldering iron .050" socket head screw key (Allen wrench or equivalent) SUPPLIES: Solder (item 12, App. A) Sealing compound (item 8, App. A) Tubing (item 15, App. A) PERSONNEL: One REFERENCES: JPG 41C for Sealing Soldering wires EQUIPMENT CONDITION: Infrared body assembly on work bench, power off FRAME 1 Procedure 1. Using soldering iron and solder, solder two wires (1), unsoldered during removal, to terminals of electrical contact (2) (JPG). 2. Put sealing compound on threads of setscrew (3) (JPG). 3. Place electrical contact (2) in housing of infrared body assembly (4). 4. Using Allen wrench, install setscrew (3) into housing of infrared body assembly (4). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-32 6-52 Vol II TM 9-1240-380-34 6-32. CONTACT (ELECTRICAL) INSTALLATION (CONT) Para 6-32 Cont Vol II 6-53 TM 9-1240-380-34 Section 12. LAMPHOLDER AND PACKING LAMPHOLDER AND PACKING MAINTENANCE PROCEDURES INDEX 6-33. Task Reference (para) 6-34 6-35 Removal Installation LAMPHOLDER AND PACKING REMOVAL 6-34. APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/4” flat tip screwdriver PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench, power off FRAME 1 Procedure Step 1. Remove lampholder (1) from infrared body assembly (2) by pressing in and turning clockwise. 2. Remove lamp (3) from lampholder (1) by pushing in while, turning counterclockwise. 3. Remove packing (4). 4. Using screwdriver, remove screw (5), washer (6), and cord (7) from infrared body assembly (2). END OF TASK Para 6-33 6-54 Vol II TM 9-1240-380-34 6-34. LAMPHOLDER AND PACKING REMOVAL (CONT) Para 6-34 Cont Vol II 6-55 TM 9-1240-380-34 LAMPHOLDER AND PACKING INSTALLATION 6-35. TOOLS: 1/4” flat tip screwdriver SUPPLIES: Grease (item 4, App. A) PERSONNEL: One REFERENCES: JPG 41C for lubricating EQUIPMENT CONDITION: Infrared body assembly on work bench, power off FRAME 1 Procedure Step 1. Put washer (1) and screw (2) through loop (3) in cord of lampholder (4). 2. Using screwdriver, install screw (2) and washer (1) in cover (5) of infrared body assembly (6). 3. Put a thin film of grease on surface of packing (7) (JPG). 4. Place packing (7) on lampholder (4). 5. Install lamp (8) in lampholder (4) by pressing in while turning clockwise. 6. Install lampholder (4) into cover (5) of infrared body assembly (6) by pressing in while turning counterclockwise. NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure (Vol I, para 2-4). END OF TASK Para 6-35 6-56 Vol II TM 9-1240-380-34 6-35. LAMPHOLDER AND PACKING INSTALLATION (CONT) Para 6-35 Cont Vol II 6-57 TM 9-1240-380-34 Section 13. BORESIGHT KNOB ASSEMBLY BORESIGHT KNOB ASSEMBLY MAINTENANCE PROCEDURES INDEX 6-36. Reference (para) Task Removal Installation 6-37 6-38 BORESIGHT KNOB ASSEMBLY REMOVAL 6-37. APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/4” flat tip screwdriver Jewelers screwdriver PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench, power off FRAME 1 Procedure Step NOTE Maintenance procedures for both boresight knob assemblies are the same. 1. Using 1/4” flat tip screwdriver, remove four screws (1), four washers (2), and boresight knob assembly (3) from infrared body assembly (4). 2. Using jewelers screwdriver, remove packing (5) from boresight knob assembly (3). END OF TASK Para 6-36 6-58 Vol II TM 9-1240-380-34 6-37. BORESIGHT KNOB ASSEMBLY REMOVAL (CONT) Para 6-37 Cont Vol II 6-59 TM 9-1240-380-34 6-38. BORESIGHT KNOB ASSEMBLY INSTALLATION APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/4” flat tip screwdriver SUPPLIES: Grease (item 4, App. A) PERSONNEL: One REFERENCES: JPG 4lC for lubricating EQUIPMENT CONDITION: Infrared body assembly on work bench, power off Step Procedure NOTE Maintenance procedures for both boresight assemblies are the same. 1. Put a thin film of grease on surface of packing (1) (JPG). 2. Place packing (1) on boresight knob assembly (2). 3. Install boresight knob assembly (2) into infrared body assembly (3) with index mark facing eyepiece. 4. Using screwdriver, install four screws (4) with four washers (5). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-4). END OF TASK Para 6-38 6-60 Vol II TM 9-1240-380-34 6-38. BORESIGHT KNOB ASSEMBLY INSTALLATION (CONT) Para 6-38 Cont Vol II 6-61 TM 9-1240-380-34 7-0 Vol II TM 9-1240-380-34 CHAPTER 7 ELBOW ASSEMBLY (M36E1) MAINTENANCE PROCEDURES Section 1. GENERAL 7-1. SCOPE This chapter gives maintenance procedures for the elbow assembly. Make sure that the elbow assembly is disconnected from power before doing any maintenance. 7-2. LIST OF ELBOW ASSEMBLY ITEMS CONTAINED IN THIS CHAPTER Item Plunger, Strike and Key Image Intensifier Assembly and Eyepiece Assembly Packing Regulator Assembly Switch Assembly Valve Stem and Valve Core Latch Lampholder and Packing Boresight Knobs Assembly Vol II Figure Index No. Reference (para) 1 2 3 4 5 6 7 8 7-3 7-6 7-11 7-14 7-17 7-20 7-23 7-26 Para 7-1 7-1 TM 9-1240-380-34 Section 2. PLUNGER, STRIKE AND KEY 7-3. PLUNGER, STRIKE AND KEY MAINTENANCE PROCEDURES INDEX Reference (para) Task 7-4 7-5 Removal Installation 7-4. PLUNGER, STRIKE AND KEY REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: Scriber Tweezers # 1 cross tip screwdriver ( Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench FRAME 1 Step Procedure Plunger (1) is spring loaded. Use care when removing retaining ring (2). 1. Using scriber, press in and hold plunger (1). Using tweezers, remove retaining ring (2) from groove in plunger (1). Spring (3) will push plunger (1) part way through hole in key (4). 2. While holding retaining ring (2) with tweezers, use fingers to pull plunger (1) from key (4). 3. Remove spring (3). 4. Using screwdriver, remove two screws (5), key (4). 5. Using screwdriver, remove screw (6) from key (4) and strike (7). END OF TASK Para 7-3 7-2 Vol II TM 9-1240-380-34 7-4. PLUNGER, STRIKE AND KEY REMOVAL (CONT) Para 7-4 Cont Vol II 7-3 TM 9-1240-380-34 PLUNGER, STRIKE AND KEY INSTALLATION 7-5. APPLICABLE CONFIGURATIONS: M36E1 TOOLS: Scriber Tweezers #1 cross tip screwdriver ( Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly, plunger, strike and key and associated parts on work bench FRAME 1 Procedure Step 1. While holding strike (1) in slot of key (2), use screwdriver to install screw (3). 2. While holding strike (1) and key (2) on elbow assembly (4), use screwdriver to install two screws (5). 3. Using your fingers, install spring (6) into key (2). 4. Push plunger (7) part way through hole in key (2), groove up. 5. Using tweezers, place retaining ring (8) over plunger (7). 6. Using scriber, press on plunger (7) and slide retaining ring (8) until it fits into groove of plunger (7). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-5). END OF TASK Para 7-5 7-4 Vol II TM 9-1240-380-34 7-5. PLUNGER, STRIKE AND KEY INSTALLATION (CONT) Para 7-5 Cont Vol II 7-5/(7-6 blank) TM 9-1240-380-34 Section 3. IMAGE INTENSIFIER ASSEMBLY AND EYEPIECE ASSEMBLY PACKING 7-6. 7-7. IMAGE INTENSIFIER TUBE ASSEMBLY AND EYEPIECE ASSEMBLY PACKING MAINTENANCE PROCEDURES INDEX Task Reference (para) Image Intensifier Assembly Removal Eyepiece Assembly Packing Removal Eyepiece Assembly Packing Installation Image Intensifier Assembly Installation 7-7 7-8 7-9 7-10 IMAGE INTENSIFIER ASSEMBLY REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: .050” socket head screw key (Allen wrench or equivalent) Fabricated extractor tool (App. C) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench, power off Para 7-6 Vol II 7-7 TM 9-1240-380-34 7-7. IMAGE INTENSIFIER ASSEMBLY REMOVAL (CONT) FRAME 1 Procedure Step 1. Using wrench, loosen two setscrews (1) in eyepiece assembly (2). 2. Turn eyepiece assembly (2) counterclockwise and remove it from adapter assembly (3). 3. Screw fabricated extractor tool (4) clockwise onto the threads of the image intensifier tube (5) as far as it will go. 4. Gently pull tool (4) to remove image intensifier tube (5) from the connector (6) inside the adapter assembly (3). 5. Unscrew extractor tool (4) from image intensifier tube (5). END OF TASK Para 7-7 Cont 7-8 Vol II TM 9-1240-380-34 7-8. EYEPIECE ASSEMBLY PACKING REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: .050” socket head screw key (Allen wrench or equivalent) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench, power off PRELIMINARY PROCEDURES: Remove eyepiece from elbow assembly ( para 7-7, steps 1 and 2 only) FRAME 1 Step Procedure 1. Using Allen wrench, loosen two setscrews (1). Remove index ring (2). 2. Using Allen wrench, loosen three setscrews (3). Remove scale diopter (4). 3. Using Allen wrench, loosen two setscrews (5). Using fingers, turn plain round nut (6) counterclockwise and remove. 4. Using fingers, turn optical element cell (7) clockwise while holding adapter (8) with other hand. When rear of cell (7) is clear of ring (9), remove packing (10). END OF TASK Para 7-8 Vol II 7-9 TM 9-1240-380-34 7-9. EYEPIECE ASSEMBLY PACKING INSTALLATION APPLICABLE CONFIGURATIONS: M36E1 TOOLS: .050” socket head screw key (Allen wrench or equivalent) SUPPLIES: Grease (item 4, App. A) PERSONNEL: One REFERENCES: JPG 41C for lubricating EQUIPMENT CONDITION: Eyepiece assembly on work bench I FRAME 1 I Procedure Step 1. Put a thin film of grease on surface of packing (1) (JPG). 2. Install packing (1) in groove of optical element cell (2). 3. Using fingers, turn optical element cell (2) counterclockwise while holding adapter (3) with other hand. Turn cell (2) until it stops. 4. 5. Using fingers, install plain round nut (4) into cell (2) until snug. Using Allen wrench, tighten two setscrews (5). 6. Install scale diopter (6) on adapter (3). Using Allen wrench, tighten three setscrews (7). 7. Install index ring (8) on cell (2). Using Allen wrench, tighten two setscrews (9). NOTE FOLLOW-ON MAINTENANCE: Install eyepiece assembly into elbow assembly (para 7-10, steps 4, 5 and 6 only). Do checkout procedure ( Vol I, para 2-5). END OF TASK Para 7-9 7-10 Vol II TM 9-1240-380-34 7-9. EYEPIECE ASSEMBLY PACKING INSTALLATION (CONT) Para 7-9 Cont Vol II 7-11 TM 9-1240-380-34 IMAGE INTENSIFIER ASSEMBLY INSTALLATION 7-10. APPLICABLE CONFIGURATIONS: M36E1 TOOLS: .050” socket head screw key (Allen wrench or equivalent) SUPPLIES: Cleaning compound (item 2, App. A) PERSONNEL: One REFERENCES: JPG 41C for cleaning lenses TM 9-254 for cleaning lenses EQUIPMENT CONDITION: Elbow assembly on work bench, power off FRAME 1 Procedure Step 1. Clean lenses on both ends of image intensifier tube (1) (JPG) (TM 9-254). 2. Screw extractor tool (2) on the tube (1). 3. Line up the pins on the tube (1) with the connector (3), Push in on the tube (1) to plug in the connector (3) on the adapter assembly (4). Unscrew extractor tool. 4. Clean lenses of eyepiece assembly (5) (JPG). 5. Screw the eyepiece assembly (5) onto the adapter assembly (4). 6. Using Allen wrench, tighten two setscrews (6). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-5). END OF TASK Para 7-10 7-12 Vol II TM 9-1240-380-34 7-10. IMAGE INTENSIFIER ASSEMBLY INSTALLATION (CONT) Para 7-10 Cont Vol II 7-13 TM 9-1240-380-34 Section 4. REGULATOR ASSEMBLY 7-11. REGULATOR ASSEMBLY MAINTENANCE PROCEDURES INDEX Task Reference (para) Removal Installation 7-12. 7-12 7-13 REGULATOR ASSEMBLY REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #1 cross tip screwdriver ( Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench, power off FRAME 1 Step Procedure Using screwdriver, remove four screws (1) from regulator assembly (2). Pull out regulator assembly (2) far enough to reach connector (3) connected to a connector on the horizontal circuit board (4). Disconnect connector (3) and remove regulator assembly (2). Remove gasket (5). END OF TASK Para 7-11 7-14 Vol II TM 9-1240-380-34 7-12. REGULATOR ASSEMBLY REMOVAL (CONT) Vol II Para 7-12 Cont 7-15 TM 9-1240-380-34 7-13. REGULATOR ASSEMBLY INSTALLATION APPLICABLE CONFIGURATIONS: M36E 1 TOOLS: #1 cross tip screwdriver (Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench, power off Procedure Put gasket (1) around inside rim of regulator assembly cover plate (2). Through gasket (1), connect connector (3) to P1 (4) on the horizontal circuit board (5) of the regulator assembly (6). Put regulator assembly (6) on locator pin (7). Line up holes with gasket (1) and elbow assembly housing (8). Using screwdriver, install four screws (9). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-5). END OF TASK Para 7-13 7-16 Vol II TM 9-1240-380-34 7-13. REGULATOR ASSEMBLY INSTALLATION (CONT) Para 7-13 Cont Vol II 7-17 TM 9-1240-380-34 Section 5. SWITCH ASSEMBLY 7-14. SWITCH ASSEMBLY MAINTENANCE PROCEDURES INDEX Task Reference (para) 7-15 7-16 Removal Installation 7-15. SWITCH ASSEMBLY REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: # 1 cross tip screwdriver ( Phillips type) Soldering iron Long round nose pliers PERSONNEL: One REFERENCES: JPG 41C for: Tagging wires Unsoldering wires EQUIPMENT CONDITION: Elbow assembly on work bench, power off PRELIMINARY PROCEDURES: Remove regulator assembly ( para 7-10 ) FRAME 1 step Procedure 1. Using screwdriver, remove screw ( 1), clamp (2) and terminal (3) and terminal (4). Reinstall terminal (3), clamp (2) and screw (1). 2. Using screwdriver, remove four screws (5) and four lockwashers (6). 3. Pull out switch assembly (7) far enough to work without straining wires. 4. Slide sleevings (8) back onto wires to expose terminals. 5. Using soldering iron and pliers, tag and unsolder wires from terminals of RETICLE resistor (9). Tag and unsolder wires from terminals of TUBE resistor ( 10) (JPG). Remove switch assembly. 6. Remove gasket (11 ). END OF TASK Para 7-14 7-18 Vol II TM 9-1240-380-34 7-15. SWITCH ASSEMBLY REMOVAL (CONT) Vol II Para 7-15 Cont 7-19 TM 9-1240-380-34 7-16. SWITCH ASSEMBLY INSTALLATION APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #1 cross tip screwdriver ( Phillips type) Soldering iron SUPPLIES: Solder (item 12, App. A) Tubing (item 15, App. A) PERSONNEL: One REFERENCES: JPG 41C for soldering EQUIPMENT CONDITION: Switch assembly and elbow assembly on work bench FRAME 1 Procedure Step 1. Put gasket (1) on back of switch assembly cover plate (2). 2. Using screwdriver, remove screw (3), clamp (4) and terminal (5). 3. Using screwdriver, install terminal (6), terminal (5), clamp (4) (with diode) and screw (3). 4. Using soldering iron, solder wires as tagged to reticle resistor (7) and tube resistor (8) (JPG). 5. Slide sleevings (9) back onto terminals. 6. Position switch assembly cover plate (2) on elbow assembly (10) so holes on cover plate (2) line up. 7. Using screwdriver, install four lockwashers (11) and four screws (12). NOTE FOLLOW-ON MAINTENANCE: Install regulator assembly (para 7-13). Do checkout procedure (Vol I, para 2-5). END OF TASK Para 7-16 7-20 Vol II TM 9-1240-380-34 7-16. SWITCH ASSEMBLY INSTALLATION (CONT) Para 7-16 Cont Vol II 7-21 TM 9-1240-380-34 Section 6. VALVE STEM AND VALVE CORE 7-17. VALVE STEM AND VALVE CORE MAINTENANCE PROCEDURES INDEX Reference (para) Task 7-18 7-19 Removal Installation 7-18. VALVE STEM AND VALVE CORE REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: 7/16“ and 3/8” open end wrench Valve core wrench PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench Procedure Step 1. Using 7/16” wrench, remove valve (1) from elbow assembly (2). 2. Using 7/16” and 3/8” wrenches, remove cap (3) from valve stem (4). 3. 4. Remove strap (5) from valve stem (4) and cap (3). Using valve core wrench, remove valve core (6) from valve stem (4). END OF TASK Para 7-17 7-22 Vol aII TM 9-1240-380-34 7-18. VALVE STEM AND VALVE CORE REMOVAL (CONT) Para 7-18 Cont Vol II 7-23 TM 9-1240-380-34 7-19. VALVE STEM AND VALVE CORE INSTALLATION APPLICABLE CONFIGURATIONS: M36E1 TOOLS: 7/16” and 3/8” open end wrench Valve core wrench SUPPLIES: Sealing compound (item 8, App. A) PERSONNEL: One REFERENCES: JPG 41C for sealing EQUIPMENT CONDITION: Valve and elbow assembly on work bench FRAME 1 Procedure Step 1. Using valve core wrench, install valve core (1) into valve stem (2). 2. Install strap (3) on valve stem (2) and cap (4). 3. Using 7/16” and 3/8” wrenches, install cap (4) on valve stem (2). 4. Put sealing compound on threads of valve stem (2) (JPG). 5. Using 7/16” wrench, install valve (5) in elbow assembly (6). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure (Vol I, para 2-5). END OF TASK Para 7-19 7-24 Vol II TM 9-1240-380-34 7-19. VALVE STEM AND VALVE CORE INSTALLATION (CONT) Para 7-19 Cont Vol II 7-25 TM 9-1240-380-34 Section 7. LATCH 7-20. LATCH MAINTENANCE PROCEDURES INDEX Task Reference (para) 7-21 7-22 Removal Installation 7-21. LATCH REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #1 cross tip screwdriver (Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench FRAME 1 Para 7-20 7-26 Vol II TM 9-1240-380-34 7-22. LATCH INSTALLATION APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #1 cross tip screwdriver (Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly and latch on work bench Procedure Step While holding latch (1) in place, use screwdriver to install two screws (2) and two washers (3) into elbow assembly (4). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-5). END OF TASK Para 7-22 Vol II 7-27 TM 9-1240-380-34 Section 8. LAMPHOLDER AND PACKING 7-23. LAMPHOLDER AND PACKING MAINTENANCE PROCEDURES INDEX Task Reference (para) Removal Installation 7-24. 7-24 7-25 LAMPHOLDER AND PACKING REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #2 cross tip screwdriver ( Phillips type) PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench, power off Procedure Step 1. Using screwdriver, remove screw (1) and washer (2) and cord (3): 2. Remove lampholder (4) from lamp cover (5) by pushing in and turning lampholder (4) counterclockwise. 3. Remove lamp (6) from lampholder (4). 4. Remove packing (7) from Iampholder (5). END OF TASK I Para 7-23 7-28 Vol II TM 9-1240-380-34 7-24. LAMPHOLDER AND PACKING REMOVAL (CONT) Para 7-24 Cont Vol II 7-29 TM 9-1240-380-34 7-25. LAMPHOLDER AND PACKING INSTALLATION APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #2 cross tip screwdriver ( Phillips type) SUPPLIES: Grease (item 4, App. A) PERSONNEL: One REFERENCES: JPG 41C for lubricating EQUIPMENT CONDITION: Elbow assembly on work bench Procedure Put washer (1) and screw (2) through loop (3) in cord of lampholder (4). Using screwdriver, install screw (2) and, washer (1) in cover (5). Put a thin film of grease on surface of packing (6) (JPG). Place packing (6) on lampholder (4). Install lamp (7) into lampholder (4). Install lampholder (4) into cover (5) by pushing in and turning clockwise. NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-5). END OF TASK Para 7-25 7-30 Vol II TM 9-1240-380-34 7-25. LAMPHOLDER AND PACKING INSTALLATION (CONT) Para 7-25 Cont Vol II 7-31 TM 9-1240-380-34 Section 9. BORESIGHT KNOBS ASSEMBLY 7-26. BORESIGHT KNOBS ASSEMBLY MAINTENANCE PROCEDURES INDEX Task Reference (para) 7-27 7-28 Removal Installation 7-27. BORESIGHT KNOBS ASSEMBLY REMOVAL APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #1 cross tip screwdriver ( Phillips type) Jewelers screwdriver PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench, power off FRAME 1 Step Procedure NOTE Maintenance procedures for both boresight knob assemblies are the same. 1. Using Phillips screwdriver, remove four screws (1), four washers (2), and boresight knob assembly (3) from elbow assembly (4). 2. Using jewelers screwdriver, remove packing (5) from boresight knob assembly (3). END OF TASK Para 7-26 7-32 Vol II TM 9-1240-380-34 7-27. BORESIGHT KNOBS ASSEMBLY REMOVAL (CONT) Para 7-27 Cont Vol II 7-33 TM 91240-380-34 7-28. BORESIGHT KNOBS ASSEMBLY INSTALLATION APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #1 cross tip screwdriver (Phillips type) SUPPLIES: Grease (item 4, App. A) PERSONNEL: One PREFERENCES: JPG 41C for lubricating EQUIPMENT CONDITION: Elbow assembly on work bench, power off Procedure NOTE Maintenance procedures for both boresight knob assemblies are the same. Put a thin film of grease on surface of packing (1). Place packing (1) on boresight knob assembly (2). Install boresight knob assembly (2) into elbow assembly (3) with index mark facing eyepiece. Using screwdriver, install four screws (4) with four washers (5). NOTE FOLLOW-ON MAINTENANCE: Do checkout procedure ( Vol I, para 2-5). END OF TASK Para 7-28 7-34 Vol II TM 9-1240-380-34 7-28. BORESIGHT KNOBS ASSEMBLY INSTALLATION (CONT) Para 7-28 Cont Vol II 7-35/(7-36 blank) TM 9-1240-380-34 CHAPTER 8 FINAL INSPECTION 8-1. SCOPE This chapter gives final inspection and maintenance procedures to be done after repairing the M36 and M36E1 Periscopes. Reference (para) Task Head Assembly Purging and Charging 8-2 Body Assembly Purging and Charging 8-3 Infrared Body Assembly Purging and Charging 8-4 Elbow Assembly Purging and Charging 8-5 Head Assembly Final Test 8-6 Body Assembly Final Test 8-7 Infrared Body Assembly Final Test 8-8 Elbow Assembly Final Test 8-9 Vol II Para 8-1 8-1 TM 9-1240-380-34 8-2. HEAD ASSEMBLY PURGING AND CHARGING TEST EQUIPMENT: Fire control purging kit TOOLS: 1/4" flat tip screw driver 3/8’’ open end wrench SUPPLIES: Soap PERSONNEL: One REFERENCES: JPG 41C for purging and charging setup EQUlPMENT CONDITION: Head assembly on work bench PRELIMINARY PROCEDURES: Do purging and charging setup (JPG) NITROGEN GAS UNDER PRESSURE DEATH or severe injury may result if personnel fail to observe safety precautions listed in Job Performance Guide 113-091-9000R. Procedure Turn valve (1) fully counterclockwise. Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greater than 100 psi (JPG). Using screwdriver, remove machine thread plug and gasket (4) from head assembly (5). Using wrench, remove cap (6) from purge valve (7). Connect free end of hose assembly (8) to purge valve (7) of head assembly (5). Turn valve (1) slowly clockwise until reading on low pressure gage (9) is 5 psi. Wait 5 minutes. Turn valve (1) slowly counterclockwise until reading on low pressure gage (9) is 1 psi. Using screwdriver, install machine thread plug and gasket (4) into head assembly (5). . for leaks (JPG). If leaks are found, fault isolate leaks (Vol I, Check head assembly (5) para 4-3). Wait two minutes. Turn tank valve (2) fully clockwise. Turn valve (1) fully counterclockwise. Para 8-2 8-2 Vol II TM 9-1240-380-34 8-2. HEAD ASSEMBLY PURGING AND CHARGING (CONT) Procedure Step 12. Remove hose assembly (8) from purge valve (7). 13. Check valve core (10) for leaks (JPG). If valve core (10) leaks, repair check valve (para 4-3) and repeat purge and charge. 14. Using wrench, replace cap (6) to purge valve (7). NOTE FOLLOW-ON MAINTENANCE: Do purging and charging shutdown procedure (JPG). END OF TASK Para 8-2 Cont Vol II 8-3 TM 9-1240-380-34 BODY ASSEMBLY PURGING AND CHARGING 8-3. TEST EQUIPMENT: Fire control purging kit TOOLS: #2 cross tip screwdriver (Phillips type) 3/8” open end wrench SUPPLIES: Soap PERSONNEL: One REFERENCES: JPG 4lC for purging and charging setup EQUIPMENT CONDITION: Body assembly on work bench PRELIMINARY PROCEDURES: Do purging and charging setup (JPG) NITROGEN GAS UNDER PRESSURE DEATH or severe injury may result if personnel fail to observe safety precautions listed in Job Performance Guide 113-091-9000R. Procedure Turn vaIve (1) fully counterclockwise. Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greater than 100 psi (JPG). Using screwsaver, remove screw (4) from body assembly (5). Using wrench, remove cap (6) from purge valve (7). Connect free end of hose assembly (8) to purge valve (7) of body assembly (5). Turn valve (1) slowly clockwise until reading on low pressure gage (9) is 5 psi. Wait five minutes. Turn valve (1) slowly counterclockwise until reading on low pressure gage is 1 psi. Using screwdriver, install screw (4) into body assembly (5). Check body assembly (5) for leaks (JPG). If leaks are found, fault isolate leaks (Vol I, para 4-4). Wait two minutes. Turn tank valve (2) fully clockwise, Turn valve (1) fully counterclockwise. Remove hose assembly (8) from purge valve (7). Para 8-3 8-4 Vol II TM 9-1240-380-34 8-3. BODY ASSEMBLY PURGING AND CHARGING (CONT) Procedure Step 13. Check valve core (10) for leaks (JPG). If valve core (10) leaks, repair valve (para 5-21) and repeat purge and charge. 14. Using wrench, replace cap (6) to purge valve (7). NOTE FOLLOW-ON MAINTENANCE: Do purging and charging shutdown procedure (JPG). END OF TASK Para 8-3 Cont Vol II 8-5/(8-6 blank) TM 9-1240-380-34 8-4. INFRARED BODY ASSEMBLY PURGING AND CHARGING APPLICABLE CONFIGURATIONS: M36 TOOLS: 1/4” flat tip screwdriver 3/8” open end wrench Fire control purging kit SUPPLIES: Soap PERSONNEL: One REFERENCES: JPG 41C for purging and charging setup EQUIPMENT CONDITION: Infrared body assembly on work bench PRELIMINARY PROCEDURES: Do purging and charging setup (JPG) High voltage. Make sure that rotary switch is set to OFF before continuing. NITROGEN GAS UNDER PRESSURE DEATH or severe injury may result if personnel fail to observe safety precautions listed in Job Performance Guide 113-091-9000R. Do not purge and charge infrared body assembly in bright light. Prolonged exposure may cause damage to the image converter tube. Para 8-4 Vol II 8-7 TM 9-1240-380-34 8-4. INFRARED BODY ASSEMBLY PURGING A N D C H A R G I N G ( C O N T ) Procedure Turn valve (1) fully counterclockwise. Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greater than 100 psi (JPG). Using screwdriver, remove screw (4) from infrared body assembly (5). Using wrench, remove cap (6) of purge valve (7). Connect free end of hose assembly (8) to purge valve (7) of infrared body assembly (5). Turn valve (1) slowly clockwise until reading on low pressure gage (9) is 5 psi. Wait 5 minutes. Turn valve (1) slowly counterclockwise until reading on low pressure gage (9) is 1 psi. Using screwdriver, install screw (4) into infrared body assembly (5). Check infrared body assembly (5) for leaks (JPG). If leaks are found, fault isolate leaks (Vol I, para 4-9). Wait two minutes. Turn tank valve (2) fully clockwise. Turn valve (1) fully counterclockwise. Remove hose assembly (8) from purge valve (7). Check valve core (10) for leaks (JPG). If valve core (10) leaks, repair valve (para 6-24 and repeat purge and charge. Using wrench, replace cap (6) to purge valve (7). NOTE FOLLOW-ON MAINTENANCE: Do purging and charging shutdown procedure (JPG). END OF TASK Para 8-4 Cont 8-8 Vol II TM 9-1240-380-34 8-4. INFRARED BODY ASSEMBLY PURGING AND CHARGING (CONT) Para 8-4 Cont Vol II 8-9 TM 9-1240-380-34 8-5. ELBOW ASSEMBLY PURGING AND CHARGING APPLICABLE CONFIGURATIONS: M36E1 TOOLS: #1 cross tip screwdriver ( Phillips type) 3/8” open end wrench Fire control purging kit SUPPLIES: S o a p PERSONNEL: One REFERENCES: JPG 4lC for purging and charging EQUIPMENT CONDITION: Elbow assembly on work bench PRELIMINARY PROCEDURES: Do purging and charging setup (JPG) Procedure Turn valve (1) fully counterclockwise. Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greater than 100 psi (JPG). Using screwdriver, remove screw (4) from elbow assembly (5). Using wrench, remove cap (6) of purge valve (7). Connect free end of hose assembly (8) to purge valve (7) of elbow assembly (5). Turn valve (1) slowly clockwise until reading on low pressure gage (9) is 5 psi. Wait 5 minutes. Turn valve (1) slowly counterclockwise until reading on low pressure gage (9) is 1 psi. Using screwdriver, install screw (4) into elbow assembly (5). Check elbow assembly (5) for leaks (JPG). If leaks are found, fault isolate leak (Vol I, para 4-13). Wait two minutes. Turn tank valve (2) fully clockwise. Turn valve (1) fully counterclockwise. Remove hose assembly (8) from purge valve (7). Check valve core (10) for leaks (JPG). If valve core (10) leaks, repair valve (para 7-17) and repeat purge and charge. Using wrench, replace cap (6) to purge valve (7). Para 8-5 8-10 Vol II TM 9-1240-380-34 8-5. ELBOW ASSEMBLY PURGING AND CHARGING (CONT) Procedure Step NOTE FOLLOW-ON MAINTENANCE: Do purging and charging shutdown procedure (JPG). END OF TASK Vol II Para 8-5 Cont 8-11 TM 9-1240-380-34 HEAD ASSEMBLY FINAL TEST 8-6. PERSONNEL: One EQUIPMENT CONDITION: Head assembly on work bench NOTE If you find a fault, tell your supervisor. If you do not find a fault, send the good head assembly back into service. FRAME 1 Procedure Step Look through observation window (1). Check for dirt or moisture on the inside of the window (1) or the prism inside the head assembly (2). Check that head assembly (2) is complete with all screws, nuts, seals, and washers in place. Check head assembly (2) for cleanliness. END OF TASK Para 8-6 8-12 Vol II TM 9-1240-380-34 8-6. HEAD ASSEMBLY FINAL TEST (CONT) Para 8-6 Cont Vol II 8-13 TM 9-1240-380-34 8-7. BODY ASSEMBLY FINAL TEST PERSONNEL: One EQUIPMENT CONDITION: Body assembly on work bench NOTE If you find a fault, tell your supervisor. If you do not find a fault, send good body assembly back into service. FRAME 1 Step Procedure 1. Check that body assembly (1) is complete with all nuts, screws, washers, and seals in place. 2. Check body assembly (1) for cleanliness. END OF TASK Para 8-7 8-14 Vol II TM 9-1240-380-34 8-7. BODY ASSEMBLY FINAL TEST (CONT) Para 8-7 Cont Vol II 8-15 TM 9-1240-380-34 8-8. INFRARED BODY ASSEMBLY FINAL TEST APPLICABLE CONFIGURATIONS: M36 PERSONNEL: One EQUIPMENT CONDITION: Infrared body assembly on work bench NOTE If you find a fault, tell your supervisor. If you do not find a fault, send good infrared body assembly back into service. FRAME 1 Procedure Step 1. Check that infrared body assembly (1) is complete with all nuts, screws, washers, and seals in place. 2. Check infrared body assembly (1) for cleanliness. END OF TASK Para 8-8 8-16 Vol II I TM 9-1240-380-34 8-8. INFRARED BODY ASSEMBLY FINAL TEST (CONT) Vol II Para 8-8 Cont 8-17 TM 9-1240-380-34 ELBOW ASSEMBLY FINAL TEST 8-9. APPLICABLE CONFIGURATIONS: M36E1 PERSONNEL: One EQUIPMENT CONDITION: Elbow assembly on work bench NOTE If you find a fault, tell your supervisor, If you do not find a fault, send the good elbow assembly back into service. FRAME 1 Procedure Step 1. Check that elbow assembly (1) is complete with all screws, nuts, seals, and washers in place. 2. Check elbow assembly (1) for cleanliness. END OF TASK Para 8-9 8-18 Vol II TM 9-1240-380-34 8-9. ELBOW ASSEMBLY FINAL TEST (CONT) Para 8-9 Cont Vol II 8-19/(8-20 blank) TM 9-1240-380-34 CHAPTER 9 PACKAGING 9-1. SCOPE This chapter gives information on packaging of the M36 and M36E1 Periscopes for storage or shipment. 9-2. PREPARATION FOR PACKAGING OF OPTICAL PARTS Cover all prisms or optical parts with at least four thicknesses of neutral lens tissue. Hold this with waterresistant, pressure-sensitive adhesive tape. Cover the lens tissue with cellulose cushioning material and use pressure-sensitive tape to hold it. 9-3. PACKAGING OF HEAD ASSEMBLY, BODY ASSEMBLY, INFRARED BODY ASSEMBLY (M36), AND ELBOW ASSEMBLY (M36E1) Packaging of head assembly, body assembly, infrared body assembly, and elbow assembly shall be in accordance with AR 700-15. 9-4. PACKAGING IN CONTAINERS Pack all parts in a container of the right size. Make sure they are braced and cushioned so that they will not break. Para 9-1 Vol II 9-1/(9-2 blank) TM 9-1240-380-34 APPENDIX A EXPENDABLE SUPPLIES AND MATERIALS LIST Section 1. INTRODUCTION A-1. SCOPE This appendix lists expendable supplies and materials you will need to repair the M36 and M36E1 Periscopes. These items are authorized to you by CTA 50-970, Expendable Items (Except Medical, Class V, Repair Parts, and Heraldic Items). A-2. EXPLANATION OF COLUMNS a. Column 1 - Item Number. This number is assigned to the entry in the listing and is used in the manual to identify the material, for example, sealing compound (item 7, App. A). b. Column 2- Level. This column identifies the lowest level of maintenance that requires the listed item. F - Direct Support Maintenance H - General Support Maintenance c. Column 3- National Stock Number. This is the National stock number assigned to the item. Use it to request or requisition the item. d. Column 4- Description. This tells the Federal item name and, if needed, a description to identify the item. The last line for each item indicates the part number followed by the Federal Supply Code for Manufacturer ( FSCM ) in parentheses, if applicable. e. Column 5- Unit of Measure (U/M). This column shows how the item is measured, for example, you may see these abbreviations: ea (each), in (inches), or pr (pair). Order the smallest amount you need. Para A-1 Vol II A-1 TM 9-1240-300-34 Section 2. EXPENDABLE SUPPLIES AND MATERIALS (1) (2) (3) National Stock No. Item No. Level 1 F 8040-00-298-1946 2 F 6850-00-392-9751 3 F 7920-00-205-1711 4 F 9150-00-269-8255 5 F 8010-00-298-2287 6 F 8010-00-292-1127 7 F 8030-00-275-8114 8 F 8030-00-275-8110 9 F 8040-00-833-9563 10 F 8030-00-252-3391 11 F 8030-00-052-8021 12 F 3439-00-243-1888 13 F 6850-00-281-1985 14 F 6640-00-2854694 15 F 5970-00-088-2975 (4) (5) Description U/M Adhesive, Reclaimed Rubber, Liquid, General Purpose, MIL-A-5092, Type 1 (81349) 8 oz. can Cleaning Compound, Optical Lens, MIL-C-43454 (81349) 1 qt. container Cotton Flannel, Cleaning cloth CCC-C-458 (81349) 50 lb. roil Grease, Pneumatic System, MIL-G-4343 (81 349) 1 lb. can Paint, Exterior Surface 1 gal. can Primer, Paint 1 kit Sealing Compound, Non-curing, MIL-S-11030 (81349) 1 pt. can Sealing Compound, Adhesive Curing, MIL-S-11031 (81 349) 1 pt. can Sealing Compound, R. T. V. 5 oz. tube Sealing Compound, MIL-S-45180,Type II (81349) 5 oz. tube Sealing Compound, Locking and Retaining, MIL-S-22473 1 pt. can Solder, Tin Alloy, Lead Tin Alloy, and Lead Alloy, QQ-S-571 (81349) 5 lb. can Solvent, Dry Cleaning, P-D-680 (81348) 1 gal. can Tissue, Lens, NNN-P-40 (81349) 100 sh. Tubing, Insulating (Shrinkable), 1/8 in. dia. MIL-I-23053/5 (92194) 3 ft. length Vol II CN QT RL LB GL KT PT PT TU TU PT CN GL RM FT TM 9-1240-380-34 APPENDIX B MAINTENANCE TASK INDEX B-1. SCOPE This appendix helps you find maintenance tasks for the M36 and M36E1 Periscopes by giving you references to the procedures. Para B-1 Vol II B-1 B-2 Para B-2 B-2 4 Para 1-4/2-8 Chap 2 Para 2-3 Para 8-7 Para 3-4 Para 5-16/5-17 Para 5-19/5-20 Vol II Para 5-25/5-26 Para 5-13/5-14 Para 5-4/5-5 B-2 Para 5-7/5-8 Para 5-10/5-11 Para 5-22/5-23 Para 1-4/2-8 Chap 2 Para 2-5 Para 8-9 Para 3-6 Para 7-27/7-28 TM 9-1240-380-34 Para 7-7,7-8/7-9,7-10 Para B-2 Cont B-3 TM 9-1240-380-34 Para B-2 Cont 2-4 PAra 7-24/7-25 Para 7-21/7-22 Para 7-4/7-5 Vol II Para 7-12/7-13 Para 7-15/7-16 Para 7-18/7-19 B-2 Para 2-8 Chap 2 Para 2-2 Para 8-6 Para 3-3 Para 4-7/4-8 Para 4-10/4-11 Vol II Para 4-19/4-22 PAra 4-16/4-17 Para 4-4/4-5 TM 9-1240-380-34 B-5 Para B-2 Cont B-2 TM 9-1240-380-34 Para B-2 Cont B-6 Para 4-13/4-14 Para 1-4/2-8 Chap 2 Para 2-4 Para 8-8 Para 3-5 Para 6-37/6-38 \/ol II Para 6-16/6-17 Para 6-16/6-17 Para 6-13/6-14 Para 6-4/6-5 B-2 Para 6-31/6-32 Para 6-10/6-11 Para 6-34/6-35 Vol II Para 6-28/6-29 Para 6-7/6-8 TM 9-1240-380-34 Para 6-19/6-20 Para B-2 Cont B-7 B-2 TM 9-1240-380-34 Para B-2 Cont B-8 Para 6-22/6-23 Para 6-25/6-26 \lol II TM 9-1240-380-34 APPENDIX C FABRICATED TOOL C-1. SCOPE This appendix shows the tool, with dimensions and use, necessary to fix the M36 and M36E1 Periscopes. Dimensions are given so that you can have the tool made. C-2. TUBE EXTRACTOR TOOL Used to remove and install Image Intensifier Tube. Para C-1 Vol II C-1/(C-2 blank By Order of the Secretary of the Army: JOHN A. WICKHAM, JR. General, United States Army Chief of Staff Official: DONALD J. DELANDRO Brigadier General, United States Army The Adjutant General Distribution: To be distributed in accordance with DA Form 12-37, Direct Support and General Support Maintenance requirements for Tank, Combat, Full-Tracked, 105–MM, M60; Tank, Combat, Full-Tracked, 105-MM, M60A1, Hull and M60A1 AOS: Vehicle, Combat Engineer, Full-Tracked, M728; Tank, Combat, Full-Tracked, 105-MM, M60A1 RISE, and M60A1 RISE PASSIVE, and Tank, Combat, Full-Tracked, 105-MM, M60A3 and TTS. *U.S. GOVERNMENT PRINTING OFFICE: 1985-554-019:10129 This fine document... Was brought to you by me: Liberated Manuals -- free army and government manuals Why do I do it? I am tired of sleazy CD-ROM sellers, who take publicly available information, slap “watermarks” and other junk on it, and sell it. Those masters of search engine manipulation make sure that their sites that sell free information, come up first in search engines. They did not create it... They did not even scan it... Why should they get your money? Why are not letting you give those free manuals to your friends? I am setting this document FREE. This document was made by the US Government and is NOT protected by Copyright. Feel free to share, republish, sell and so on. I am not asking you for donations, fees or handouts. If you can, please provide a link to liberatedmanuals.com, so that free manuals come up first in search engines: Free Military and Government Manuals – Sincerely Igor Chudov http://igor.chudov.com/ – Chicago Machinery Movers