Nv65hmc_td

Transcript

LIST No. NV 65HMC: E062 Dec. 2009 PRODUCT NAME Hitachi 2-1/2” High Pressure Coil Nailer Model NV 65HMC MARKETING OBJECTIVE The new Model NV 65HMC is a high-pressure type [2-1/2" (65 mm)] of coil nailer. High-pressure nailer series products have already been introduced to the Japanese market and become popular nationwide. This new product offers higher punching force about three times greater than that of conventional nailers, in order to reduce its size and weight. The new Model NV 65HMC also features strong punching force, a nose switch mechanism, blow nozzle, dual action trigger, and a tool-less adjuster. Please expand sales of the new Model NV 65HMC Nailer. APPLICATIONS • Floor and wall framing • Truss and window built-up • Subflooring and roof decking • Crate and pallet construction SELLING POINTS [NEW FEATURES] Lightweight and Compact N Powerful Nose switch mechanism Blow nozzle Dual action trigger Tool-less adjuster Easy nail loading Lock mechanism of trigger Low exhaust pressure SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT. International Sales Division REMARK: • For more information about HANDLING INSTRUCTIONS, visit our website at: http://www.hitachi-koki.com/manual_view_export/ • Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the place of company name(s) and model name(s) of our competitor(s). The symbol(s) utilized here is(are) as follows: Competitors Symbols Utilized P Company Name Model Name MAX HN65 CONTENTS Page SELLING POINTS -------------------------------------------------------------------------------------------------------------- 1 SPECIFICATIONS -------------------------------------------------------------------------------------------------------------- 3 1. Specifications------------------------------------------------------------------------------------------------------ 3 2. Nail Selection------------------------------------------------------------------------------------------------------ 4 3. Nail Punching Force --------------------------------------------------------------------------------------------- 4 4. Adjusting the Nailing Depth ------------------------------------------------------------------------------------ 6 5. Dual Action Trigger----------------------------------------------------------------------------------------------- 6 COMPARISON WITH SIMILAR PRODUCTS---------------------------------------------------------------------------- 7 1. Comparison of Specifications --------------------------------------------------------------------------------- 7 PRECAUTIONS ON SALES PROMOTION ------------------------------------------------------------------------------ 8 1. Safety Instructions ----------------------------------------------------------------------------------------------- 8 TROUBLESHOOTING GUIDE -------------------------------------------------------------------------------------------- 10 1. Troubleshooting and Repair -------------------------------------------------------------------------------- 10 2. Possible Causes and Corrections of Air Leakage------------------------------------------------------ 15 REPAIR GUIDE---------------------------------------------------------------------------------------------------------------- 18 1. Precautions on Disassembly and Reassembly --------------------------------------------------------- 18 Assembly Diagram for NV 65HMC SELLING POINTS Lightweight and Compact Thanks to higher punching pressure about three times greater than that of conventional nailers, both nailer size and weight are reduced. Powerful Powerful punching force about 1.3 times greater than that of our conventional NV 65AH Nailer. High pressure nailer Conventional nailer High pressure nailer Model NV 65HMC NV 65AH P Weight 2.0 kg (4.4 lbs.) 2.1 kg (4.6 lbs.) 1.9 kg (4.3 lbs.) Height 28 5mm (11-1/4”) 300 mm (11-13/16”) 301 mm (11-7/8”) Punching force ratio 1.3 1 1.3 Nose switch mechanism Capable of changing outlet sizes (“Small” and “Large”) according to nail head sizes for using various kinds of nails. (Select a nose according to the head size of nails you use.) Nail head diameter Outlet size ”Small” Outlet size ”Large” ø 4.8 to ø 6.0 mm (0.189” to 0.236”) ø 6.0 to ø 7.3 mm (0.236” to 0.287”) 6.5 mm (0.256”) Nose switch 8.0 mm (0.315”) Turn down the switch lever. Turn up the switch lever. Blow nozzle Equipped with a blow nozzle, which is very convenient in keeping the work area clean. -1- Dual action trigger This function automatically switches between "Single sequential actuation mode" and "Contact actuation mode" according to the operation sequence. This function can prevent unwanted double firing in "Single sequential actuation mode." Tool-less adjuster Rotating this adjuster adjusts the nailing depth (sink quantity of the nail head). Shallow Deep Adjuster Easy nail loading When you open the nail magazine cover, the nail holder automatically tilts toward you so that you can easily change nail rolls. Lock mechanism of trigger This lock mechanism locks the trigger so that it cannot be pulled. Low exhaust pressure A muffler is provided to break the force of exhaust and suppress the blowing of dust. The muffler can divert exhaust in any direction (360°). -2- SPECIFICATIONS 1. Specifications Model NV 65HMC Item Punching system Operating pressure Reciprocating piston type 2 12 to 23 kgf/cm (170 to 320 psi, 12 to 23 bar) (Gauge pressure) Punching speed Min. 3 pcs./sec. Weight 2.0 kg (4.4 lbs.) Dimensions 266 mm x 285 mm x 130 mm (Length x Height x Width) (10-1/2" x 11-1/4" x 5-1/8") Nail feed system Reciprocating piston type Nail capacity Air consumption Air inlet Air hose Packaging 200 to 400 (1 roll) 1.6 ltr/cycle at 20 kgf/cm2 (.057 ft3/cycle at 280 psi) (1.6 ltr/cycle at 20 bar) Air plug for high pressure nailer Air hose for high pressure nailer (Inner diam.: 5 to 6 mm (13/64” to 15/64”)) Corrugated cardboard box (sleeve type) 355 mm x 410 mm x 170 mm Packaging dimensions (Length x Height x Width) (14" x 16" x 6-11/16") • Case (Code No. 886432) Standard accessories • Eye protector (Code No. 875769) • Oiler (30 cc) (Code No. 883136) • Nose cap (Code No. 886650) • Pneumatic tool lubricant (1 oz oil feeder) (Code No. 877153) Optional accessories • Pneumatic tool lubricant (4 oz oil feeder) (Code No. 874042) • Pneumatic tool lubricant (1) (Code No. 876212) NOTE: The Model NV 65HMC applies higher punching force than that of conventional nailers. The customer must therefore procure an air compressor and an air hose designed for highpressure nailers. The air plug of the Model NV 65HMC is exclusively designed for high pressure and cannot be connected to any air hoses and compressors that are generally used at much lower air pressures. Never modify the air plug for lower pressure. -3- 2. Nail Selection The Model NV 65HMC utilizes common wire-collated and sheet-collated nail coils of 200 to 400 round-head nails. Applicable nail dimensions are shown below. However, genuine HITACHI nail coils should be used to assure satisfactory nailing quality. CAUTION: Ensure that nails are as specified in Fig. 1. Using other nails will cause nail jams and consequent nailer damage. Fig. 1 • Dimensions of nails Wire-collated coil nails Max. 7.3 mm (0.287”) 5 mm (0.197”) 2.1 mm (0.083”) 2.2 mm (0.088”) 3.3 mm (0.131”) 7 mm (0.276”) 50 mm (2”) 65 mm (2-1/2”) 38 mm (1-1/2”) 4.8 mm (0.189”) Sheet-collated coil nails Min. Max. 38 mm (1-1/2”) Min. 2.8 mm (0.109”) 3. Nail Punching Force Fig. 2 shows by type of wood and nail the nailer output energy provided by the supply pressure, and the nailing energy required for punching nails flush. Air pressure exceeding the intersecting point between nailer output energy and the required nailing energy for punching nails ensures fully punched nails. For example, when punching a nail measuring 3.1 mm in dia. x 65 mm in length (0.122" x 2-1/2") into a workpiece of hemlock with the Model NV 65HMC, pressure of about 14.7 bar (15 kgf/cm2, 210 psi) enables the nailer to punch the nail flush with the wood surface. Any higher pressure causes the nail head to sink below the wood surface. Fig. 2 should be used only as a reference because the values indicated vary depending on the type of wood, moisture content, and grain of wood. -4- Fig. 2 • Required nailing energy and nailer output energy Nailer output energy Required nailing energy (ft·lb) (kgf·cm) (J) 1200 (ft·lb) (kgf·cm) (J) 120 1200 80 80 1000 60 120 800 100 1000 60 80 800 100 80 600 60 40 600 60 400 40 200 20 40 400 40 20 20 20 100 200 0.2 0.3 3.1x 65 (.122 x 2-1/2) 200 Size of Nail mm (in) -5- Energy Hemlock 300 (mm2) 0.4 0.5 (in2) Nail: d x L (mm x mm) L d 11 11 150 14 14 200 17 17 250 20 23 20 23 300 bar (kgf/cm2) 350 (psi) Air pressure setting to punch nail flush with NV 65HMC -5- 4. Adjusting the Nailing Depth The nailing depth can be adjusted by simply turning the adjuster. * Adjusting the adjuster (Fig. 3) • Conduct test punching. If the nail sinks too deep, turn the adjuster knob toward the Shallow position mark). If the nail sinks too shallow, turn the adjuster knob toward the Deep position ( mark) ( (see Figs. 3 and 4). The nail sink quantity is changed 1 mm per rotation of the adjuster knob. • Do not push up the pushing lever when turning the adjuster. • Set the lock lever to the "FREE" position when punching nails. Fig. 3 Fig. 4 Lock Lock lever Flush Too deep (Turn the knob toward shallow side.) Too shallow (Turn the knob toward deep side.) Shallow Free Deep Adjuster 5. Dual Action Trigger The Model NV 65HMC is equipped with an automatic mode switching mechanism that automatically switches between "single sequential actuation mode" and "contact action mode". (1) Punching operations (automatic switching between single sequential actuation mode and contact action mode) Nail Nail (1) (2) (3) driven driven Depress the pushing lever. Pull the trigger. Depress the pushing lever. Single sequential actuation mode Driven Pull the trigger. Depress the pushing lever. Contact action mode Not driven Depress the pushing lever. Driven Driven (2) Precautions on using the dual action trigger • Nails are not punched even with the pushing lever again pressed against the workpiece and the trigger pulled in single sequential actuation mode. To punch nails continuously, remove your finger from the trigger and operate according to the contact action procedure. • Note that when you raise the Model NV 65HMC from the floor (after pressing the pushing lever against the floor) with the trigger pulled, single sequential actuation mode is automatically selected. Therefore, nails are not punched even when you press the pushing lever against the workpiece. Release the trigger and operate according to the procedure of the desired mode. -6- COMPARISON WITH SIMILAR PRODUCTS 1. Comparison of Specifications Maker Model (Superior specifications: HITACHI ) P (High pressure nailer) NV 65HMC (High pressure nailer) 12 to 23 bar (12 to 23 kgf/cm2) (170 to 320 psi) 2.0 kg (4.4 lbs.) NV 65AH (Conventional nailer) 4.9 to 8.3 bar (5 to 8.5 kgf/cm2) (70 to 120 psi) 2.1 kg (4.6 lbs.) 266 mm x 285 mm x 130 mm (10-1/2” x 11-1/4” x 5-1/8”) 266 mm x 300 mm x 128 mm (10-1/2” x 11-13/16” x 5-1/16”) 270 mm x 301 mm x 129 mm (10-5/8” x 11-7/8” x 5”) 1.3 1 1.3 400 nails Top loading (Easy nail loading) Provided 300 nails 400 nails Bottom loading Top loading None None Tool-less Tool-less Tool-less Automatic None Automatic Provided Provided Provided None Switching type (ø 6.5 mm, ø 8 mm) 360° changeable None Fixed type (ø 6.4 mm) 360° changeable Provided Replacement type (ø 6.4 mm, ø 7.6 mm) Side Handle grip Rubber Rubber Rubber Trigger lock Provided None Provided Collation Wire and Sheet Wire and Sheet Wire and Sheet Head dia. 7.3 mm (0.287") 6.4 mm (0.252") 7.0 mm (0.276") Shank dia. 3.3 mm (0.131") 38 mm to 65 mm (1-1/2" to 2-1/2") 2.5 mm (0.099") 38 mm to 65 mm (1-1/2" to 2-1/2") 3.3 mm (0.131") 38 mm to 65 mm (1-1/2" to 2-1/2") Item Operating pressure Weight Dimensions (L x H x W) Punching force ratio Nail capacity Magazine type Blow nozzle Driving depth adjustment mechanism Single actuation/contact actuation selector Nose cap Free angle plug Outlet (size) Exhaust direction Applicable nails Length -7- 12 to 23 bar (12 to 23 kgf/cm2) (170 to 320 psi) 1.9 kg (4.3 lbs.) PRECAUTIONS ON SALES PROMOTION 1. Safety Instructions In the interest of promoting the safest and most efficient use of the Model NV 65HMC Nailer by all of our customers, it is very important when concluding a sale that the salesperson carefully ensure that the buyer seriously recognizes the importance of the Instruction Manual, and fully understands the precautions listed on the Warning Label attached to each tool. A. Instruction manual Although every effort is made in each step of design, manufacture, and inspection to provide protection against safety hazards, the dangers inherent in the use of any pneumatic tool cannot be completely eliminated. Accordingly, the Instruction Manual lists general precautions and suggestions on the use of pneumatic tools, and specific precautions and suggestions on use of the pneumatic nailer, in order to enhance the safe, efficient use of the tool by the customer. Salespersons must be thoroughly familiar with the contents of the Instruction Manual to be able to offer appropriate guidance to customers during sales promotion activities. B. Warning Label Each Model NV 65HMC unit is provided with a Warning Label (illustrated below) that lists basic safety precautions on tool use. Carefully ensure that customers fully understand and follow these precautions before using the tool. -8- C. Related laws and regulations As nailers and staplers are designed to instantaneously punch nails and staples, there is an ever-present danger of misfiring and subsequent possible serious injury. Accordingly, close attention to handling is absolutely necessary at all times. Carefully ensure that the customer is fully aware of the precautions listed in the Instruction Manual provided with each unit. While there are no specific safety regulations, there are related items in various general safety regulations with which the salespersons should be familiar, in order to properly advise the customer. Please check your national and/or local regulations for applicable items. Some applicable items are outlined below. Europe: EN 792-13:2000 The USA: OSHA ANSI SNT-101-2002 Hand-held-non-electric power tools-Safety requirements-Part 13: Fastener punching tools 1926.102 Eye and face protection 1926.302 Power-operated hand tools Portable, Compressed-Air-Actuated, Fastener Punching Tools-Safety Requirements for D. Precautions on operation (1) Pay special attention to the pressure, capacity and piping of the air compressor, in order to regulate air pressure supplied to the Model NV 65HMC within the range from 12 kgf/cm2 (170 psi, 12 bar) to 23 kgf/cm2 (320 psi, 23 bar). Otherwise the performance, service life and safety of the Model NV 65HMC may be adversely affected. Be sure to install a regulator when using a high-pressure air compressor with pressure set to 23 kgf/cm2 (320 psi, 23 bar) or more. In this case, adjust the air pressure to 23 kgf/cm2 (320 psi, 23 bar) or less. (2) If the dust in compressed air accumulates on the sliding portion, the Model NV 65HMC will not operate properly. Lubrication effectively removes dust and also prolongs the service life of the Model NV 65HMC in terms of maintaining good performance. Therefore, the Model NV 65HMC should be lubricated daily. Supply five to ten drops of lubricant into the air plug on the Model NV 65HMC. When not using the tool for an extended period, be sure to supply lubricant and perform idle punching two or three items to lubricate inside, and then apply a thin coating of lubricant to the steel parts to avoid rusting. • The table below shows the applicable lubricant. Please recommend the use of Hitachi nailer/tacker oil to all customers. Type of oil Brand or product name Hitachi pneumatic tool lubricant Shell sliding oil, Tonna S32 (Old Tonna T32); Code No. 877153 (1 oz. oil feeder) Code No. 874042 (4 oz. oil feeder) Code No. 876212 (1 L (1 quart) can)) (3) Be sure to fully drain the compressor’s tank to prevent deteriorated performance or malfunction of the Model NV 65HMC due to rusting. (4) Instruct the customers (especially heavy users) to properly conduct inspection and maintenance. -9- TROUBLESHOOTING GUIDE 1. Troubleshooting and Repair Problem 1) Nails cannot be punched. Possible cause ( *: Most-common cause) • Magazine is not loaded with specified genuine nails. • Magazine is loaded with abnormal nails (e.g., bent nails, too large or too small nail heads, abnormal collation). • Nails or link pieces are jammed. • Link pieces are deformed or broken. Inspection method Corrective action • Check that the magazine is correctly loaded with specified nails. • Use specified nails. • Remove abnormal nails and load the nailer with proper nails. • Remove the feed piston and check the feed piston sliding surface of the nose. • Apply grease to the sliding surface. • Polish the scratched portion with sandpaper. Replace the parts. • Nail guide face of the nose is abnormal (deformed, burrs or damaged). • Feed spring or feeder spring is abnormal (damaged or fatigued). • Feeder is abnormal (damaged or worn). • Check that the punching section is not abnormal (burrs, deformed, damaged or worn). • Deburr the nail guide face. • Correct the deformed part. • Replace abnormal parts. • Nails are not correctly loaded in the groove of the nose. • Check that nails are correctly loaded in the groove of the nose. • Load nails in the correct position in the nose. • Dust adheres to the feeder sliding portion of the nose, or lubrication is needed. • Open the nail guide and perform idle punching to check the feeder's operation. • Remove dust and then lubricate the sliding surface. • Sliding resistance of the feed piston is too high. • Air pressure is too low. • Adjust the air pressure to 12 to 23 bar (12 to 23 kgf/cm2, 170 to 320 psi). *• Air passage is clogged with broken pieces of piston bumper, etc. *• Feed piston chamber contains foreign matter such as broken pieces of piston bumper, etc. • Remove foreign matter. Replace the piston bumper with new one. • Body ---Remove foreign matter in the return air chamber. • Nose ---Remove foreign matter in the air passage and feed piston chamber. -10- Problem 1) Nails cannot be punched. (continued) Possible cause ( *: Most-common cause) Inspection method Corrective action • Air leaks from the gap between the body and the nose. • Tighten screws and check the O-rings. • O-rings are worn or deformed. • Replace the O-rings. • O-rings need lubrication. • Apply grease or lubricant. • Nail guide face is abnormal (deformed, burrs or damaged). • Check that the nail guide is not abnormal (worn, deformed or damaged). • Correct or replace the parts. • Dust adheres inside the nail guide groove, or lubrication is needed. • Check the operation of nail stopper (A) and nail stopper (B). • Remove dust and then lubricate. *• Spring is abnormal (missing, damaged or fatigued). • The claw ridge section of the nail stopper is abnormal (damaged, worn or burrs). • Magazine • Pushing lever

• Air pressure is too low. *• Piston O-ring is abnormal (worn or damaged). • Replace abnormal parts. • Check that a nail does not catch on another nail in the magazine. • Check that a nail does not catch on any part of the magazine. • Check the height of the nail holder. • Collate the nails correctly and then reload the nailer. • Remove burrs or deformed parts. Replace the parts. • Adjust the height of the nail holder correctly. • Check the operation of the pushing lever. • Correct or replace the parts. • Open the nail guide and perform idle punching to check that the driver blade is returned. • Adjust the air pressure to 12 to 23 bar (12 to 23 kgf/cm2, 170 to 320 psi). • Replace the piston O-ring. *• Piston bumper is abnormal. • Replace the piston bumper. • O-ring in the cylinder is abnormal (removed, deformed or damaged). • Reassemble or replace the parts. • Correct or replace the part. • Driver blade is abnormal (deformed, burrs or damaged). -11- Problem 1) Nails cannot be punched. (continued) Possible cause ( *: Most-common cause) Inspection method • Cylinder inner surface is abnormal (packed with dust or worn). • Check that nails can be punched at 4.9 bar (5 kgf/cm2, 70 psi). • Remove dust and then lubricate. • Replace the part. • Head valve sliding surface is abnormal (seized or damaged, or lubrication needed). • Perform idle punching to check punching operation. • Replace the part. • Apply grease. • Head valve rubber (A) is abnormal (removed or damaged). • Perform idle punching to check that the driver blade is not held in the down position. • Replace the part. • Head valve spring is abnormal (fatigued or damaged). • Plunger, valve piston, valve bushing (A) or valve bushing (B) is abnormal (seized or damaged). 2) Nails are punched but bent. 3) Nails cannot be completely punched into the workpiece: the heads cannot be made flush. Corrective action • Replace abnormal parts. • O-rings or sliding surfaces are worn or need lubrication. • Disassemble the control valve section and check the O-rings. • Replace abnormal parts. • Apply grease. *• Adjuster is raised too high for short nails. • Check that the adjuster is not raised too high. • Turn the adjuster lower (lower the pressure). • Nails are not completely fed into the injection port. *• Unspecified nails are used. • See item 1). • See item 1). *• Driver blade is worn. • Check that the driver blade tip is not abnormally worn. • Replace the part. • Workpiece is too hard. • Check if a nail is bent even when punched into soft wood. • Nailer cannot be used because the material is beyond its applicable range. • Adjuster is incorrectly set. • Turn the adjuster to the lowest position and then punch nails. • Set the adjuster to the optimum position. • Air pressure is too low. • Workpiece is too hard. • Check if a nail is bent even when punched into soft wood. -12- • Adjust air pressure to 12 to 23 bar (12 to 23 kgf/cm2, 170 to 320 psi). • Nailer cannot be used because the material is beyond its applicable range. Problem 3) Nails cannot be completely punched into the workpiece: the heads cannot be made flush. (continued) 4) Nails jam. Possible cause ( *: Most-common cause) Inspection method Corrective action *• Driver blade is worn. • Perform idle punching to check whether the driver blade protrudes from the nose tip. • Replace the part. *• Piston O-ring is abnormal (worn or damaged). • Cylinder inside surface is abnormal (worn or rough). • Disassemble the output section and check the piston O-ring and inside the cylinder for abnormality. • Replace abnormal parts. • Head valve sliding surface is abnormal (seized or damaged, or lubrication needed). • Check the sliding surface for abnormality and lubrication. • Replace abnormal parts. • Apply grease. • Check whether the specified nails are used. • Check the nails as follows: • Use specified nails. • Remove abnormal nails and load the nailer with proper nails. [Wire-collated nails] • Collating wires are abnormal (broken, failed welding, deformed or failure at welding position). *• Collating wires are deformed (deformed in collation angle or collation pitch). [Wire-collated nails] [Wire-collated nails] [Sheet-collated nails] *• Collating sheets are abnormal (deformed or broken). • Nails are removed from the sheets. [Sheet-collated nails] *• Unspecified nails are used. *• Abnormal nails are mixed. *• Nail heads are too large or too small. Unit: mm (inch) D L1 L2 19 (0.748) 37.5 (1.476) d 4.8 to 7.3 2.1 to 2.3 (0.189 to 0.287) (0.083 to 0.131) [Sheet-collated nails] Unit: mm (inch) -13- D d 5 to 7 (0.197 to 0.276) 2.2 to 2.8 (0.088 to 0.109) Problem 4) Nails jam. (continued) Possible cause ( *: Most-common cause) • Feeder is worn and the sliding section abnormal. • Nail guide face of the nose or the sliding section of the feeder is abnormal (deformed, burrs or damaged). • Feed spring or feeder spring is abnormal (damaged, fatigued or removed). • Nail guide section is abnormal. • See item "1) Output section: piston, driver blade, etc." • Air pressure is too high. Inspection method Corrective action • Open the nail guide and check the position of the feeder claw. • Replace abnormal parts. • See item "1) Nail guide section." • See item "1) Nail guide section." • Perform idle or actual punching to check whether the driver blade returns completely. • See item "1) Output section: piston, driver blade, etc." • Nails may be jammed if punched at high pressure and high speed. Check the pressure and punching speed. • Adjust air pressure within the range of 12 to 23 bar (12 to 23 kgf/cm2, 170 to 320 psi). -14- 2. Possible Causes and Corrections of Air Leakage 1. Air leakage repair location • Air leakage repair location Control valve section OFF ON Magnified view of Z -15- 2. Repair procedure (1) Check the following parts marked with an asterisk " * " for trouble. (2) Then check the seal parts (with the (3) Next, check the other possible parts. mark) for excessive wear, flaws and breaks. [Bold] numbers in the description below correspond to item numbers in the Parts List and exploded assembly diagram for the Model NV 65HMC. Possible causes Air leak point A Exhaust port Control valve OFF Control valve ON Defects on Head Valve [10] and Valve Defects on Exhaust Cover [7] Rubber [20] seal surfaces (deformation or flaws on seal surfaces) (worn, deformation or cracks) * Defects on Exhaust Rubber [13] Defects on Valve Rubber [20] and Cylinder [23] seal surfaces (deformation or flaws on seal surfaces) (breaks, deformation or flaws) * Defects on Head Valve [10] seal surface (breaks, deformation or flaws on the seal Defects on Cylinder O-Ring (D) [17] and O-Ring (1AS-50) [19] (worn, cut or flaws) Defects on Exhaust Cover [7], Body Ass’y surface) * Defects on O-Ring [11] (deformation or flaws on part) [39] and Separator [18] seal surfaces seal (breaks, deformation or flaws on surfaces) Defects on Plunger O-Ring [31] (worn, cut or flaws) or defects on Exhaust Cover [7] seal surface (deformation or flaws on the seal surface) B Exhaust cover (near the head guard) Loose Nylock Bolt M5 x 25 [6] Break in Gasket [14] Defects on Body Ass’y [39] and Exhaust Cover [7] seal surfaces (breaks, deformation or flaws) C Nose 1 Loose Nylock High Tension Bolt M6 x 20 [52] Defect on O-Ring (1AP-3) [102] (worn, cut or flaws) Defect on O-Ring (S-38) [42] of Body Ass’y [39] (cut or flaws) and seal trouble (breaks, deformation or flaws on D Nose 2 part) Defect on O-Ring (P-36) [34] of Cylinder Defect on Piston Bumper [41] [23] (worn, cut or flaws) (deformation or cracks of Defect on Body Ass’y [39] seal surface Defect on Piston (H) [16] and Nose [43] (breaks, deformation or flaws on E Feed piston part) parts) (deformation, dust or seal surface defect) Defect on Feed Piston O-Ring [104] (worn, cut, or flaws) or defects on sliding surface of Nose [43] (worn, deformation or flaws) Defect on O-Ring (P-9) [103] of Nose [43] (worn, cut or flaws) or defect on sliding surface of Feed Piston [105] (worn, deformation or flaws) -16- Possible causes Air leak point F Control valve exhaust port Control valve OFF Defect on O-Ring (P7-U) [98] Control valve ON of Valve Defect on O-Ring (1AP-11) [90] and O- Piston [89] (worn, cut or flaws) Ring (P9-U) [88] of Valve Piston [89] Defect on O-Ring (I.D 1.8) [92] of Plunger (worn, cut or flaws) [93] (worn, cut or flaws) Defect on O-Ring (S-16) [96] of Valve Defect on O-Ring (S-14) [95] of Valve Bushing (B) [97] (cut or flaws) Bushing (B) [97] (worn, cut or flaws) Defect on O-Ring (1AP-5) [99] of Valve * Defect on inner surface of Body Ass'y [39] valve chamber ( part) Bushing (A) [101] (worn, cut or flaws) * Defect on Head Valve [10] seal surface (breaks, deformation, flaws on part) * Defect on the inner surface of Body Ass'y [39] valve chamber ( G Control valve section Defect on O-Ring (S-16) [96] and O-Ring Defect on O-Ring (S-16) [96] and O-Ring (S-6) [100] of Valve Bushing (A) [101] (S-6) [100] of Valve Bushing (A) [101] (worn, cut or flaws) (worn, cut or flaws) Defect on sliding surface of Plunger [93] Defect on sliding surface of Plunger [93] O-Ring (S-6) [100] (deformation or flaws on O-Ring (S-6) [100] (deformation or flaws on part) H Valve Bushing (air duster valve section) part) Break of Valve Packing [33] Defect on O-Ring (1AP-3) [29] (worn, cut or flaws) or defect on Valve Bushing [26] seal surface (flaws or breaks on part) Loose Valve Bushing [26] screw I Cap part) Defect on O-Ring (I.D 37.2) [59] (worn, cut or flaws) Loose Cap [60] Defect on seal surfaces of Body Ass'y [39] and Cap [60] (breaks, deformation or flaws of part) -17- REPAIR GUIDE The following describes the most essential precautions on disassembly and reassembly of the nailer. The NV 65HMC Coil Nailer mainly consists of six sections: output section, air duster valve section, control valve section, magazine section, nail feeder section and cap section. 1. Precautions on Disassembly and Reassembly [Bold] numbers in the description below correspond to item numbers in the Parts List and exploded assembly diagram for the Model NV 65HMC. CAUTION: Before starting disassembly and reassembly of the nailer, be sure to lock the trigger (by turning the lock lever to the "Lock" position, disconnect the air hose, empty the compressor’s air tank, and remove all nails from the nailer. 1. General notices on reassembly • Apply grease (Attolub No.2) to O-rings and O-ring sliding portions. • When mounting an O-ring, be careful not to damage it and keep the O-ring and its groove clean. • Apply grease (Attolub No.2) to the inner surface of Cylinder [23]. • Replace a broken Gasket [14] with a new one and make sure it does not leak any air. • Always keep the control valve section away from any contaminant. • Apply the supplied oil to the nail feeding slide section. • When replacing Piston Bumper [41], be sure to check and make sure the air channels of Body Ass'y [39] and Nose [43] are free from broken pieces of Piston Bumper [41] and other unwanted particles. Screw Tightening Torques • Nylock High Tension Bolt M6 x 20 [52]------------------------------ 16.2 ± 1.5 N•m｛165 ±15 kgf•cm｝ • Nylock Bolt M5 x 25 [6] ----------------------------------------------------8.3 ± 0.5 N•m｛85 ± 5 kgf•cm｝ • Seal Lock Hex. Socket Hd. Bolt M5 x 10 [1] --------------------------4.4 ± 0.5 N•m｛45 ± 5 kgf•cm｝ • Hex. Socket Hd. Bolt M5 x 20 [111]-------------------------------------8.3 ± 0.5 N•m｛85 ± 5 kgf•cm｝ • Nylock Hex. Socket Hd. Bolt M4 x 10 [126] [128] -------------------4.4 ± 0.3 N•m｛45 ± 3 kgf•cm｝ • Machine Screw (W/Washer) M5 x 25 (Black) [64]-------------------2.0 ± 0.5 N•m｛20 ± 5 kgf•cm｝ • Cap [60]------------------------------------------------------------------------24.5 ± 5.0 N•m｛250 ± 50 kgf•cm｝ • Air Plug L-PT 1/4 [62] ------------------------------------------------------24.5 ± 5.0 N•m｛250 ± 50 kgf•cm｝ • Valve Bushing [26] ----------------------------------------------------------9.8 ± 2.0 N•m｛100 ± 20 kgf•cm｝ -18- Disassembly and Reassembly of the Output Section 1. Disassembly and reassembly of the Exhaust Cover, Head Valve, Exhaust Rubber, etc Seal Lock Hex. Socket Hd. Bolt M5 x 10 [1] Plate [2] [Tools required] • Hex. bar wrench (3 mm) • ø 3 mm rod (or ø 3 mm roll pin puller) • Hammer • Flat-blade screwdriver Top Cover [3] Muffler [4] Protector [5] Nylock Bolt M5 x 25 [6] Exhaust Cover [7] Head Valve Spring [8] O-Ring [9] Head Valve [10] O-Ring [11] Ring [12] Exhaust Rubber [13] Gasket [14] Cylinder O-Ring (D) [17] Separator [18] (1) Disassembly • Remove Seal Lock Hex. Socket Hd. Bolt M5 x 10 [1] by using the Hex. bar wrench (3 mm). You can then detach the Plate [2], Top Cover [3], and Protector [5]. • Remove the four Nylock Bolts M5 x 25 [6]. You can ten detach the Exhaust Cover [7]. • To remove the Exhaust Cover [7], turn and pull it up while holding the Body Ass'y [39]. NOTE: Do not strike the side of the cover with a hammer to forcibly remove it from the Body Ass'y [39]. Doing so may damage the fitting parts. • To remove the Separator [18] from the Exhaust Cover [7], insert the flat-blade screwdriver into the bottom of the Exhaust Cover [7] as shown below, and pull it up by applying the principle of leverage. Be sure to place a piece of cloth or paper between the screwdriver shank and bottom end of the Exhaust Cover [7] to protect the end of the cover. • Insert the ø 3 mm rod into the hole of the Exhaust Cover [7] and then hammer out the Exhaust Rubber [13]. You can then detach the components of the Exhaust Cover. NOTE: To protect the Exhaust Rubber [13], never use a sharp-pointed rod. • Disassembly of Exhaust Cover and Separator O-Ring (1AS-50) [19] Hammer Valve Rubber [20] ø 3 mm rod Cylinder Bumper [21] Exhaust Cover [7] Cylinder Washer [22] Separator [18] Body Ass’y [39] Cloth Exhaust Rubber [13] -19- Flat-blade screwdriver • Reassembly of Exhaust Cover, Head Valve, Exhaust Rubber, etc (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • Inject about 3 g of grease into the Head Valve [10] sliding part of the Exhaust Cover [7]. • Fully apply grease to the periphery of the Exhaust Rubber [13]. • Apply grease to the O-Ring [9], O-Ring [11], Cylinder O-Ring (D) [17], and O-Ring (1AS-50) [19], and then assemble these parts in place. • Press-fit the Exhaust Rubber [13] into the recess of the Exhaust Cover [7] until it is completely seated as shown to the left. Exhaust Rubber [13] Head Valve [10] Exhaust Cover [7] Apply grease. Inject about 3g of grease. Press-fit until fully seated in the recess. 2. Disassembly and reassembly of the Cylinder, Piston (H), Piston Bumper, etc [Tools required] • Flat-blade precision screwdriver Piston O-Ring [15] Piston (H) [16] (1) Disassembly • Remove the Exhaust Cover [7] according to "Disassembly and reassembly of the Exhaust Cover [7], Head Valve [10], Exhaust Rubber [13], etc." You can then detach the Cylinder [23], Piston (H) [16], Piston Bumper [41], and other parts. Valve Rubber [20] • It is easier to detach the Valve Rubber [20] from the Cylinder [23] by using a flat-blade precision screwdriver or other slim rod. Be Cylinder [23] careful not to damage the Cylinder [23]. * It is possible to disassemble the Piston O-Ring (P-36) [34] O-Ring (P-32) [35] Piston Bumper [41] Bumper [41] from the Nose [43] side. (See "Disassembly and Reassembly of the Magazine Section.") (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • Apply grease to the Piston O-Ring [15], inner surface of the Cylinder [23], Piston Bumper [41], and O-Ring (P-36) [34], and then assemble these parts in place. Body Ass’y [39] -20- Disassembly and Reassembly of the Air Duster Valve Section [Tools required] • Socket wrench (14 mm) • Flat-blade screwdriver Knob [24] Retaining Ring (E-Type) For D4 Shaft [25] Valve Bushing [26] (left-handed thread) O-Ring (S-10) [27] O-Ring (S3) [28] O-Ring (1AP-3) [29] Plunger [30] Plunger O-Ring [31] Spring [32] Valve Packing [33] Exhaust Cover [7] (1) Disassembly • Remove the Valve Bushing [26] (left-handed thread) by using the socket wrench (14 mm). You can detach the Plunger [30] and Knob [24] together. You can also detach the Spring [32] and Valve Packing [33]. • After removing the Knob [24], Retaining Ring (E-Type) For D4 Shaft [25] from the Plunger [30], you can detach the Plunger [30] from the Valve Bushing [26]. (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • Fully apply grease to the respective O-rings. • Mount the Retaining Ring (E-Type) For D4 Shaft [25] on the Plunger [30] and then push the Knob [24] straight in until it contacts the Retaining Ring (E-Type) For D4 Shaft [25]. -21- Disassembly and Reassembly of the Control Valve Section [Tools required] • Roll pin puller (ø 3, ø 2.5) • Flat-blade screwdriver O-Ring (S-14) [95] O-Ring (S-16) [96] Feeder Shaft Ring [36] Roll Pin D3 x 28 [65] Body Ass’y [39] Valve Bushing (B) [97] O-Ring (P7-U) [98] O-Ring (P9-U) [88] Lock Knob [80] Valve Piston [89] O-Ring (1AP-11) [90] Steel Ball D3.175 [78] Trigger Piece (C) [66] Lock Spring [79] Trigger Spring [67] Plunger Spring [91] O-Ring (I.D 1.8) [92] Trigger Arm (C) [68] Roll Pin D2.5 x 16 [76] Plunger [93] Trigger [69] O-Ring (1AP-5) [99] Trigger Spring [70] O-Ring (S-6) [100] Pushing Lever Guide [71] Pin D2 x 8 [94] Valve Bushing (A) [101] O-Ring (S-16) [96] (1) Disassembly • After removing the Feeder Shaft Ring [36], you can detach the Lock Knob [80]. • Pull out the two Roll Pins D3 x 28 [65] by using the roll pin puller (ø 3). You can then detach the Pushing Lever Guide [71], Trigger [69] section, and Trigger Spring [70]. After pulling out the Roll Pin D2.5 x 16 [76], you can detach the components of the Trigger section. • Pull out the two Roll Pins D3 x 28 [65] from the control valve section by using the roll pin puller (ø 3), and then follow the instructions below to remove the control valve section. • Disassembly of control valve section Plunger [93] Valve Bushing (A) [101] Flat-blade screwdriver Valve Piston [89] Pin D2 x 8 [94] (a) Insert the tip of the flat-blade screwdriver into the groove of Valve Bushing (A) [101] and lift up Valve Bushing (A) [101] as shown on the left by applying the principle of leverage with the body as the supporting point. NOTE: To protect the body, place a piece of cloth between the screwdriver shank and the body. (b) After removing the two Pins D2 x 8 [94] by using a slim rod (ø 1.8), you can detach Valve Bushing (B) [97], the Valve Piston [89], Plunger Spring [91], and Plunger [93]. Pin D2 x 8 [94] O-Ring (P9-U) [88] NOTE: Never use pliers to clamp the Plunger [93] end and pull it out. The O-Ring (P9-U) [88] is very hard. Be careful not to damage its periphery by using a precision screwdriver or similar tool. Valve Bushing (B) [97] -22- (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: (a) Reassembly of the control valve section • Always keep the control valve section clean. • Fully apply grease to the O-Ring (S-16) [96], O-Ring (1AP-5) [99] and O-Ring (S-6) [100] of Valve Bushing (A) [101], O-Ring (I.D 1.8) [92] of the Plunger [93], O-Ring (P7-U) [98] , O-Ring (P9-U) [88] and O-Ring (1AP-11) [90] of the Valve Piston [89], and O-Ring (S-14) [95] and O-Ring (S-16) [96] of Valve Bushing (B) [97]. • Match the concave portion of Valve Bushing (A) [101] with that of Valve Bushing (B) [97] as shown below, and then insert the two Pins D2 x 8 [94] into both. For reassembly on the Body Ass'y [39], first insert the roll pin puller (ø 3) by making sure the pin passes through the roll pinhole, and then hammer in the two Roll Pins D3 x 28 [65]. Orient the splitting of Roll Pin D3 x 28 [65] as shown below at reassembly. NOTE: Always match the roll pin groove of Valve Bushing (A) [101] with the roll pinhole of the Body Ass'y [39] before hammering in the roll pin. Otherwise, the periphery of Valve Bushing (A) [101] will be damaged, thereby inhibiting disassembly and reassembly of the control valve section. • Reassembly of the control valve section Valve Bushing (B) [97] concave portion Pinholes Match these Valve Bushing (A) [101] concave portion Roll pinholes Roll Pin D3 x 28 [65] Splitting direction Valve Bushing (A) [101] Plunger [93] Pin groove Pin groove Valve Bushing (A) [101] • After reassembly, make sure that the Plunger [93] moves smoothly. -23- (b) Reassembly of the Trigger section • Reassemble Trigger Arm (C) [68] with its protrusion facing upward. • Reassemble the Roll Pin D2.5 x 16 [76] with its splitting oriented as shown below. • Reassembly of the Trigger section Protrusion of Trigger Arm (C) [68] Trigger Piece (C) [66] Trigger [69] Roll Pin D2.5 x 16 [76] splitting direction Trigger Spring [67] Body Ass’y [39] Through hole (ø 3) of Pushing Lever (C) [73] (Apply grease at reassembly.) Trigger section ø 3 x 19 rod Trigger Spring [70] Roll Pin D3 x 28 [65] splitting direction Pushing Lever Guide [71] • For easier reassembly of the Trigger section onto the Body Ass'y [39], mount the Trigger Spring [70] and Trigger section onto the Pushing Lever Guide [71] in advance by using the ø 3 x 19 rod. • Orient the splitting of the Roll Pin D3 x 28 [65] as shown above at reassembly. • Be careful not to reverse the insertion direction of the Roll Pin D3 x 28 [65] when remounting the Pushing Lever Guide [71] on the Body Ass'y [39]. • Apply grease (No.777-1, P/N-325149) to the through hole (ø 3) of the Pushing Lever (C) [73] when remounting Pushing Lever (C) [73] on the Pushing Lever Guide [71]. -24- Disassembly and Reassembly of the Magazine Section 1. Disassembly and reassembly of the magazine ass'y • Disassembly and reassembly of the magazine ass'y [Tools required] • Flat-blade screwdriver • Phillips screwdriver • Roll pin puller (ø 4, ø 2.5) • Hex. bar wrench (4 mm) • M5 spanner (1) Disassembly • Loosen the Hex. Socket Hd. Bolt M5 x 20 [111] and Nylon Nut M5 [57] by using the Hex. bar wrench (4 mm) and M5 spanner, and then remove the Sleeve [133]. • Uncouple and remove the Nose [43] by deforming Pushing Lever Cover (B) [134] by using a flat-blade screwdriver or similar tool. Fitting portion Use a flat-blade screwdriver to remove. (2) Reassembly Conduct reassembly by reversing the disassembly procedure while fitting the convex portion of the Magazine [132] to the Nose [43]. • Fold back the Cover [118] twice, fit its hole to the convex portion of the Magazine [132], and then press it with Pushing Lever Cover (B) [134]. The Cover [118] must be located outside Pushing Lever Cover (B) [134]. • This nailer has its Name Plate [139] attached to the Magazine Cover [137]. So when replacing the Magazine Cover [137] with a new one, you must also order a new Name Plate [139] and attach it to the Magazine Cover [137]. -25- • Disassembly and reassembly of the magazine section Body Ass’y [39] Nylon Nut M5 [57] Pin [135] Machine Screw (W/Washer) M5 x 25 (Black) [64] Magazine [132] Feeder Shaft Ring [136] Nylon Nut M5 [57] Pushing Lever Cover (B) [134] Pin [135] Magazine Cover [137] Sleeve [133] Feeder Shaft Ring [136] Holder Cap (A) [141] Change Knob [44] Name Plate [139] Ratchet Spring [140] Hex. Socket Hd. Bolt M5 x 20 [111] Nail Holder [142] Lock Spring [45] Holder Shaft [144] Steel Ball D3.175 [46] Roll Pin D2.5 x 12 [143] Shaft Ring [112] Nose [43] Spring [114] Concave portion Shaft Ring [112] Nose Shaft [115] Nose Piece [116] Pushing Lever Cover (B) [134] Magazine [132] Cover [118] Locate the hole of the Cover [118] between the convex portion of the Magazine [132] and the concave portion of Pushing Lever Cover (B) [134]. -26- Spring [145] 2. Disassembly and reassembly of the Nail Holder , the Holder Shaft , etc (1) Disassembly • Pull out both Pins [135] by using the roll pin puller (ø 4 mm). Then Magazine [132] and Magazine Cover [137] can then be removed. NOTE: Be careful not to lose the two Feeder Shaft Rings [136] when pulling out the two Pins [135]. • Detach Holder Cap (A) [141] and pull out the Roll Pin D2.5 x 12 [143] by using the roll pin puller (ø 2.5 mm). The Nail Holder [142], Holder Shaft [144], and Spring [145] can then be removed. (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • While reassembling the Holder Shaft [144] onto the Magazine [132], make sure the Spring [145] is correctly located between the concave portion of the Magazine [132] and the convex portion of the Holder Shaft [144] before inserting the Pin [135]. • Make sure the two Feeder Shaft Rings [136] are in the grooves of both Pins [135]. • Confirm the following after reassembly. ○ The Nail Holder [142] tilts when the Magazine Cover [137] is opened. ○ The Nail Holder [142] smoothly retracts into the Magazine [132] when the Magazine Cover [137] is closed. • Disassembly and reassembly of the Nail Holder , the Holder Shaft , etc Convex portion of the Holder Shaft [144] Nail Holder [142] Pin [135] Concave portion of the Magazine [132] -27- Spring [145] Disassembly and Reassembly of the Nail Feeder Section [Tools required] • Hex. bar wrench (5 mm ) • Roll pin puller (ø 4, ø 2) • C-shaped snap ring puller for hole Body Ass’y [39] Retaining Ring For D24 Hole [110] Feed Piston Cover [109] Piston Bumper [41] Bumper [108] Feed Spring (B) [107] O-Ring (S-38) [42] Feed Spring (A) [106] O-Ring (1AP-3) [102] Feed Piston [105] Nose [43] Feed Piston O-Ring (I.D. 14) [104] Change Knob [44] O-Ring (P-9) [103] Hex. Socket Hd. Bolt M5 x 20 [111] Lock Spring [45] Pushing Lever Spring [72] Pushing Lever (C) [73] Steel Ball D3.175 [46] Adjuster [74] Needle Roller [47] Roll Pin D2 x 16 [77] Spring [114] Adjuster Spring [81] Roll Pin D4 x 18 [48] Adjuster Plate (C) [82] Feeder Arm (B) [49] Nose Piece [116] Feeder Spring [50] Shaft Ring [112] Feeder (A) [51] Adjuster Plate (A) [83] O-Ring (S-4) [84] Pushing Lever (B) [85] Nylock High Tension Bolt M6 x 20 [52] Nose Shaft [115] O-Ring (S-5) [86] Retaining Ring (E-Type) For D3 Shaft [87] Pushing Lever Cover (A) [54] Pushing Lever (A) [55] -28- 1. Disassembly and reassembly of Nose, Pushing Lever (A), etc (1) Disassembly • Remove the four Nylock High Tension Bolts M6 x 20 [52]. You can then detach the Nose [43], Pushing Lever (A) [55], etc. • Remove the Shaft Ring [112] of the Nose Piece [116] by using a flat-blade screwdriver. You can then detach the Nose Piece [116] and Nose Shaft [115]. • Remove the Shaft Ring [112] of the Change Knob [44] by using a flat-blade screwdriver. You can then detach the Change Knob [44]. (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • Apply grease to the O-Ring (S-38) [42], fit it to the outer periphery of the inlaid part of the Nose [43], and then carefully reassemble. • Fit the convex portion of Adjuster Plate (A) [83] to the groove of the Pushing Lever Guide [71] and then reassemble. • After reassembly, make sure the push lever components and Adjuster [74] move smoothly. • Disassembly and reassembly of Nose, Pushing Lever (A), etc Pushing Lever Guide [71] Adjuster [74] Pushing Lever (A) [55] Convex portion of Adjuster Plate (A) [83] Fit convex portion to groove. 2. Disassembly and reassembly of the adjuster section (1) Disassembly • Remove the Retaining Ring (E-Type) For D3 Shaft [87]. You can then disassemble the Adjuster [74] section into Pushing Lever (A) [55], Pushing Lever Cover (A) [54], and Adjuster [74] components. • Pull out the Roll Pin D2 x 16 [77] by using the roll pin puller (ø 2). You can then disassemble the Adjuster [74] section into its components. (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • Reassemble with the bent portion of Adjuster Plate (A) [83] facing towards the Adjuster [74]. • Reassemble with the convex portion of Adjuster Plate (C) [82] facing Adjuster Plate (A) [83]. • Disassembly and reassembly of the adjuster section Adjuster [74] Adjuster Plate (C) [82] Adjuster Plate (A) [83] bent part Adjuster Spring [81] Pushing Lever (B) [85] Bent part Convex portion Adjuster Plate (A) [83] -29- 3. Disassembly and reassembly of the Piston Bumper, Feeder (A), Feed Piston, etc (1) Disassembly • Remove the Nose [43] and push the lever components from the output section according to item 1 in "Disassembly and Reassembly of the Nail Feeder Section". You can then remove the Piston Bumper [41]. • Remove the Retaining Ring For D24 Hole [110] by using the C-shaped snap ring puller for the hole, while pressing the Feed Piston Cover [109] with your finger so that it does not pop up. You can then remove the Feed Piston Cover [109], Bumper [108], Feed Spring (A) [106], and Feed Spring (B) [107]. • Pull out the Roll Pin D4 x 18 [48] by using the roll pin puller (ø 4). You can then remove the Feed Piston [105] and Feeder Arm (B) [49]. • Push out the Needle Roller [47] by using the roll pin puller (ø 4). You can then remove Feeder (A) [51] and the Feeder Spring [50] from Feeder Arm (B) [49]. (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • If the air passages of the Body Ass'y [39] and Nose [43] and the feed piston chamber become clogged with broken pieces of the Piston Bumper [41] or other objects, the Feed Piston [105] may not work properly. So, when replacing the Piston Bumper [41], clean these parts prior to reassembly. • Disassembly and reassembly of Piston Bumper, Feeder (A), Feed Piston, etc Piston Bumper [41] Magazine side Roll Pin D4 x 18 [48] Feeder Arm (B) [49] Body Ass’y [39] Groove Groove Stepped Split side Retaining Ring For D24 Hole [110] Air passage O-Ring (P-9) [103] Surface A Feed Piston Cover [109] Feed Piston O-Ring (I.D. 14) [104] Feed piston chamber Nose [43] • Apply grease to the O-Ring (P-9) [103] and Feed Piston O-Ring [104] prior to reassembly. • Apply grease to the groove of the Feed Piston [105]. • Assemble the Bumper [108] with its stepped part on the Feed Piston [105] side. • Grease must be applied to the sliding parts of the Feed Piston [105] and Feed Piston O-Ring [104] of the Nose [43] prior to reassembly. However, too much grease on Surface A will adversely affect Feed Piston [105] movement (at low air pressure). • Assemble the Roll Pin D4 x 18 [48] with its split side on the magazine side as shown above. • Make sure the Retaining Ring For D24 Hole [110] is just in the groove of the Nose [43]. -30- 4. Disassembly and reassembly of Nail Guide, Nail Stopper (A), Nail Stopper (B), etc [Tools required] • Long-nose pliers • Flat-blade screwdriver • Hex. bar wrench (3 mm) (1) Disassembly • Grasp the Nail Guide Shaft [53] with long-nose pliers or a similar tool, lower it, and then pull it out. You can then remove Nail Guide [121] and other components together. • Remove the Nylock Hex. Socket Hd. Bolt M4 x 12 [128] and Nylock Hex. Socket Hd. Bolt M4 x 10 [126] by using the Hex. bar wrench (3 mm). You can then detach the Nail Guide Cover [117], Nail Stopper Spring [123], Stopper Spring [125], and Cover [118]. • Remove the Shaft Ring [112] of the Guide Lock [119] by using the flat-blade screwdriver, and then pull out Guide Lock [119]. You can remove Nail Stopper (A) [122] and Nail Stopper (B) [124]. • Disassembly and reassembly of Nail Guide, Nail Stopper (A), Nail Stopper (B), etc O-Ring (P-4) [113] Nose [43] Guide Lock [119] Spring [120] Nail Guide [121] Nail Stopper (A) [122] Nail Stopper Spring [123] Shaft Ring [112] Nail Guide Shaft [53] Nail Stopper (B) [124] Stopper Spring [125] Shaft Ring [112] Nail Guide Cover [117] Cover [118] Nylock Hex. Socket Hd. Bolt M4 x 10 [126] Fold back the end for reassembly. Sleeve (B) [127] Nylock Hex. Socket Hd. Bolt M4 x 12 [128] (2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: • Completely clean the claw groove of the Nail Guide [121] prior to reassembly. • Completely engage the Nail Stopper Spring [123] and Stopper Spring [125] with the convex portions of Nail Stopper (A) [122] and Nail Stopper (B) [124] prior to reassembly. • After reassembly, press Nail Stopper (A) [122] and Nail Stopper (B) [124] respectively with your fingers and make sure both return smoothly. • Assemble the Nail Guide Shaft [53] with its chamfered portion facing up. • Fit the Shaft Ring [112] into the groove of the Nail Guide Shaft [53]. • Fold back the end of the Cover [118] and fit it into the convex portion of the Magazine [132]. -31- Disassembly and Reassembly of the Cap Section [Tools required] • Wrench (width: 21 mm) (1) Disassembly Dust Cap [61] Cap [60] (left-hand thread) Body Ass'y [39] Air Plug L-PT 1/4 [62] (left-handed thread) O-Ring (I.D 37.2) [59] • The Cap [60] is unified with an M42 left-handed thread and can be removed by using a wrench. (2) Reassembly • Conduct reassembly by reversing the disassembly procedure. Apply grease the to O-Ring (I.D 37.2) [59] at reassembly. Checks after Reassembly 1. Check and confirm the following before connecting compressed air to the nailer: • Tightening torque of respective screws • The Plunger [93] slides smoothly. • The Adjuster [74] can be rotated smoothly by hand. • The Trigger [69] is locked and you cannot pull it when the Lock Knob [80] is in the "Lock" position. • You can pull the Trigger [69] smoothly when the Lock Knob [80] is in the "Free" position. • Press Pushing Lever (A) [55] against a piece of wood and make sure it slides smoothly. • Press Nail Stopper (A) [122] and Nail Stopper (B) [124] respectively with your fingers and make sure both return smoothly. • Press the Knob [24] of the air duster valve section by your fingers and make sure the Plunger [30] moves smoothly. • Turn the Change Knob [44] and make sure the size of the ejection port varies correctly. 2. Connect compressed air to the nailer and confirm the following: • No air leaks from any part of the nailer. • The nailer is inactive when you pull the Trigger [69] while the Lock Knob [80] is in the "Free position." The nailer does not work when Pushing Lever (A) [55] is pressed against a piece of wood. • Open the Nail Guide [121], make empty shoots at 12 bar {12 kgf/cm2} in this state, and make sure the Feed Piston [105] moves steadily. • Nail at 12 bar {12 kgf/cm2} and make sure the Piston (H) [16] returns completely after nailing. • Nail at 12 bar {12 kgf/cm2}. Make sure there are no missing or bent nails. NOTE: Turn the Adjuster [74] knob to the lowest sink position for test nailing. • Pull the Trigger [69], press Pushing Lever (A) [55] against a piece of wood, and make sure you can nail continuously. Press Pushing Lever (A) [55] against a piece of wood, pull the Trigger [69], and make sure you can nail each time you pull the Trigger [69]. • Press the Knob [24] of the air duster valve section and make sure air jets out from the nozzle. -32- LIST NO. E062 PNEUMATIC TOOL PARTS LIST HIGH PRESSURE COIL NAILER Model NV 65HMC 2009 · 12 · 11 (E1) 62 1 2 60 34 3 59 24 35 58 26 36 27 503 63 28 95 64 65 29 5 30 96 97 37 31 6 502 57 25 4 501 61 39 33 66 90 79 67 75 9 10 71 92 82 69 70 91 81 68 8 89 80 78 40 7 93 83 76 99 84 11 96 87 77 110 A 74 109 41 103 135 102 105 136 135 44 19 20 121 114 49 138 120 113 52 140 122 51 112 A 55 139 124 116 115 21 141 142 123 53 54 22 B 119 47 50 137 136 112 46 18 130 111 45 48 B 129 104 43 16 131 106 42 15 133 132 107 134 57 108 14 101 94 86 73 13 100 85 72 12 17 98 88 38 32 125 112 117 126 118 143 144 145 127 146 128 23 132 135 56 140 145 137 PARTS ITEM NO. NV 65HMC CODE NO. DESCRIPTION NO. USED 1 980-046 SEAL LOCK HEX. SOCKET HD. BOLT M5 X 10 1 2 887-026 PLATE 1 3 887-025 TOP COVER 1 4 886-658 MUFFLER 1 5 886-423 PROTECTOR 1 6 881-262 NYLOCK BOLT M5 X 25 4 7 886-421 EXHAUST COVER 1 8 886-418 HEAD VALVE SPRING 8 9 883-770 O-RING 1 10 886-416 HEAD VALVE 1 11 886-417 O-RING 1 12 883-774 RING 1 13 886-419 EXHAUST RUBBER 1 14 883-789 GASKET 1 15 883-751 PISTON O-RING 1 16 886-402 PISTON (H) 1 17 877-126 CYLINDER O-RING (D) 1 18 886-420 SEPARATER 1 19 990-067 O-RING (1AS-50) 1 20 883-768 VALVE RUBBER 1 21 883-956 CYLINDER BUMPER 1 22 883-955 CYLINDER WASHER 1 23 886-415 CYLINDER 1 24 884-334 KNOB 1 25 968-643 RETAINING RING (E-TYPE) FOR D4 SHAFT 1 26 885-027 VALVE BUSHING 1 27 987-105 O-RING (S-10) 1 28 881-715 O-RING (S3) 1 29 873-093 O-RING (1AP-3) 1 30 885-028 PLUNGER 1 31 878-607 PLUNGER O-RING 1 32 881-900 SPRING 1 33 884-338 VALVE PACKING 1 34 931-835 O-RING (P-36) 1 35 986-374 O-RING (P-32) 1 36 886-669 FEEDER SHAFT RING 1 HITACHI LABEL (B) 1 37 38 883-513 WARNING LABEL (A) 1 39 887-173 BODY ASS'Y 1 40 886-342 HITACHI PLATE 1 41 885-195 PISTON BUMPER 1 42 980-717 O-RING (S-38) 1 43 886-403 NOSE 1 44 886-409 CHANGE KNOB 1 45 882-923 LOCK SPRING 1 46 959-148 STEEL BALL D3.175 (10 PCS.) 1 47 880-659 NEEDLE ROLLER 1 48 949-498 ROLL PIN D4 X 18 (10 PCS.) 1 49 883-144 FEEDER ARM (B) 1 50 883-143 FEEDER SPRING 1 -2- *ALTERNATIVE PARTS REMARKS INCLUD. 58 12 - 09 PARTS ITEM NO. NV 65HMC CODE NO. DESCRIPTION NO. USED 51 886-406 FEEDER (A) 1 52 880-675 NYLOCK HIGH TENSION BOLT M6 X 20 4 53 883-755 NAIL GUIDE SHAFT 1 54 883-761 PUSHING LEVER COVER (A) 1 55 887-024 PUSHING LEVER (A) 1 56 886-650 NOSE CAP 1 57 877-371 NYLON NUT M5 2 GRIP RUBBER (A) 1 59 880-183 O-RING (I.D 37.2) 1 60 886-426 CAP (GOLD) 1 61 877-914 DUST CAP 1 62 883-135 AIR PLUG L-PT 1/4 1 CAUTION PLATE (C) 1 64 887-315 MACHINE SCREW (W/WASHER) M5 X 25 (BLACK) 1 65 949-865 ROLL PIN D3 X 28 (10 PCS.) 4 66 886-626 TRIGGER PIECE (C) 1 67 886-627 TRIGGER SPRING 1 68 886-625 TRIGGER ARM (C) 1 69 886-623 TRIGGER 1 70 883-759 TRIGGER SPRING 1 71 886-047 PUSHING LEVER GUIDE 1 72 882-892 PUSHING LEVER SPRING 1 73 882-891 PUSHING LEVER (C) 1 74 882-889 ADJUSTER 1 75 886-228 ROLL PIN D1.6 X 10 1 76 881-951 ROLL PIN D2.5 X 16 1 77 880-093 ROLL PIN D2 X 16 1 78 959-148 STEEL BALL D3.175 (10 PCS.) 1 79 882-923 LOCK SPRING 1 80 886-727 LOCK KNOB 1 81 882-890 ADJUSTER SPRING 1 82 884-973 ADJUSTER PLATE (C) 1 83 882-886 ADJUSTER PLATE (A) 1 84 981-317 O-RING (S-4) 1 85 882-888 PUSHING LEVER (B) 1 86 872-822 O-RING (S-5) 1 87 872-971 RETAINING RING (E-TYPE) FOR D3 SHAFT 1 88 883-104 O-RING (P9-U) 1 89 883-101 VALVE PISTON 1 90 878-764 O-RING (1AP-11) 1 91 883-103 PLUNGER SPRING 1 92 883-405 O-RING (I.D 1.8) 1 93 886-621 PLUNGER 1 94 949-778 PIN D2 X 8 (10 PCS.) 2 95 876-319 O-RING (S-14) 1 96 876-031 O-RING (S-16) 2 97 886-042 VALVE BUSHING (B) 1 98 883-105 O-RING (P7-U) 1 99 873-407 O-RING (1AP-5) 1 100 997-218 O-RING (S-6) 1 58 63 12 - 09 *ALTERNATIVE PARTS REMARKS SUPPLIED WITH ITEM NO. 601, 602 -3- PARTS ITEM NO. NV 65HMC CODE NO. DESCRIPTION NO. USED 101 883-099 VALVE BUSHING (A) 1 102 873-093 O-RING (1AP-3) 1 103 872-645 O-RING (P-9) 1 104 877-763 FEED PISTON O-RING (I.D. 14) 1 105 883-756 FEED PISTON 1 106 883-757 FEED SPRING (A) 1 107 883-758 FEED SPRING (B) 1 108 885-681 BUMPER 1 109 883-098 FEED PISTON COVER 1 110 983-748 RETAINING RING FOR D24 HOLE 1 111 949-757 HEX. SOCKET HD. BOLT M5 X 20 (10 PCS.) 1 112 880-319 SHAFT RING 4 113 874-436 O-RING (P-4) 1 114 886-412 SPRING 1 115 886-410 NOSE SHAFT 1 116 886-652 NOSE PIECE 1 117 883-784 NAIL GUIDE COVER 1 118 886-405 COVER 1 119 886-107 GUIDE LOCK 1 120 880-446 SPRING 1 121 886-404 NAIL GUIDE 1 122 883-783 NAIL STOPPER (A) 1 123 886-451 NAIL STOPPER SPRING 1 124 882-680 NAIL STOPPER (B) 1 125 880-494 STOPPER SPRING 1 126 880-413 NYLOCK HEX. SOCKET HD. BOLT M4 X 10 1 127 882-881 SLEEVE (B) 1 128 880-630 NYLOCK HEX. SOCKET HD. BOLT M4 X 12 1 129 887-175 WARNING LABEL 1 LABEL (D) 1 130 131 887-174 WARNING LABEL 1 132 886-428 MAGAZINE 1 133 882-907 SLEEVE 1 134 883-762 PUSHING LEVER COVER (B) 1 135 881-825 PIN 2 136 877-826 FEEDER SHAFT RING 2 137 883-926 MAGAZINE COVER 1 138 CAUTION PLATE (B) 1 139 NAME PLATE 1 140 880-398 RATCHET SPRING 1 141 881-003 HOLDER CAP (A) 1 142 885-683 NAIL HOLDER 1 143 878-791 ROLL PIN D2.5 X 12 1 144 882-905 HOLDER SHAFT 1 145 881-826 SPRING 1 146 887-314 MAGAZINE ASS'Y 1 -4- *ALTERNATIVE PARTS REMARKS INCLUD. 132, 135-137, 140-145 12 - 09 STANDARD ACCESSORIES ITEM NO. CODE NO. NV 65HMC DESCRIPTION NO. USED 501 883-136 PNEUMATIC TOOL LUBRICANT (30 CC) 1 502 875-769 SAFETY GLASSES 1 503 886-432 CASE 1 12 - 09 *ALTERNATIVE PARTS REMARKS -5- OPTIONAL ACCESSORIES ITEM NO. CODE NO. NV 65HMC DESCRIPTION NO. USED 601 881-768 GRIP TAPE (A) 1 602 880-407 TAPE 2 603 876-212 PNEUMATIC TOOL LUBRICANT (1 L) 1 -6- *ALTERNATIVE PARTS REMARKS Printed in Japan 12 - 09 (091211N)