Transcript
LIST No. F408 Dec. 2009
PRODUCT NAME
Hitachi Rotary Hammer Model
DH 28PC
MARKETING OBJECTIVE This product features a maximum bit diameter of 28 mm, the capability to drill holes in concrete and other hard materials, the mounting SDS-plus shank bits," and three modes (Rotation + Hammering, Rotation only, and Hammering only) that enable chipping and groove-cutting work. This 3-mode type of product offers improved drilling/chipping performance, as well as reduced product size and weight. This product together with the dustcollection type of product (DH 28PD) developed at the same time forms a continuous lineup of D-shaped handle rotary hammer drills in order to promote the sharing of these products. APPLICATIONS (1) Rotation and hammering function • Drilling anchor holes. Drilling holes in concrete, tile, brick and similar materials. Large hole boring with core bit. (2) Rotation only function • Drilling holes in steel and wood (with chuck adapter). Tightening machine screws and wood screws (with chuck adapter). (3) Hammering only function • Stripping mortar and tiles. Demolishing and chiseling of concrete. Grooving and cutting of bricks. SELLING POINTS [ NEW FEATURES ]
Most compact body in its class Highest demolition performance in its class Equipped with a reversing switch [ SAME FEATURES AS CONVENTIONAL MODELS ]
3-mode changing and variable lock mechanism for easy working-angle adjustment of chisels, etc. Idle striking prevention mechanism with catchring method One push type of bit mounting Internal pressure adjustment mechanism Easy-to-operate and double-molded switch handle and side handle SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Sales Division
D
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 Company Name
Model Name
B
BOSCH
GBH3-28E
C
MAKITA
HR2811F
CONTENTS Page SELLING POINTS ------------------------------------------------------------------------------------------------------------- 1 SPECIFICATIONS ------------------------------------------------------------------------------------------------------------- 4 1. Specifications----------------------------------------------------------------------------------------------------- 4 2. Optional Accessories ------------------------------------------------------------------------------------------- 5 COMPARISON WITH SIMILAR PRODUCTS--------------------------------------------------------------------------10 1. Comparison of Specifications ----------------------------------------------------------------------------------------------------- 10 2. Comparison of Drilling Speed ---------------------------------------------------------------------------------------------------- 11 PRECAUTIONS ON SALES PROMOTION ----------------------------------------------------------------------------12 1. Safety Instructions ---------------------------------------------------------------------------------------------12 REFERENCE MATERIALS-------------------------------------------------------------------------------------------------13 REPAIR GUIDE----------------------------------------------------------------------------------------------------------------17 1. Precautions on Disassembly and Reassembly ---------------------------------------------------------17 STANDARD REPAIR TIME (UNIT) SCHEDULES--------------------------------------------------------------------29 Assembly Diagram for DH 28PC
SELLING POINTS Most compact body in its class
*Based on our own research
By downsizing and optimizing the motor and mechanism components, Hitachi significantly reduced overall product length to achieve the most compact body in this class of product. Model
HITACHI DH 28PC
C
B
Full length (mm)
316
320
332
B: 332 mm C: 320 mm
HITACHI DH 28PC shape B: Outlined shape C: Outlined shape
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C: 225 mm
HITACHI DH 28PC, B: 208 mm (C: -17 mm)
HITACHI DH 28PC: 316 mm (for C: -4 mm, for B: -16 mm)
Highest demolition performance in its class
*Based on our own research
Hitachi achieved the highest demolition performance in this class of product by optimizing the hammering properties. • Comparison of chiseling amounts (Test results obtained at Hitachi factory)
HITACHI
25.2
DH 28PC
C
18.2
0
5
10
15
20
25
30
Chiseling amount (kg/30 min.) * The chiseling amount is dependent upon test conditions. * “C” has no "Hammering" mode.
Equipped with a reversing switch This product is equipped with a reversing pushbutton switch. The user can select either forward rotation (clockwise) or backward rotation (counterclockwise) by simply pressing the pushbutton. Refer to the Technical Data and Service Manual for the model indicated below.
DH 24PC2 / No. E479, DH 24PC3 / No. E489, DH 30PC2 / No. E494
3-mode changing and variable lock mechanism for easy working-angle adjustment of chisels, etc. This product adopts Hitachi's unique mode selection mechanism: two standard modes of "Rotation + hammering" and "Rotation" and one additional mode of "Hammering." These modes enables not only light chiseling work using bull points but also heavy work using cold chisels and cutters such as groove digging and cornering work, thereby expanding the range of product use. The user can easily mount a bit in any of 12 angle positions by simply setting the change lever to the "neutral" position and turning the bit.
Idle striking prevention mechanism with catch-ring method This product adopts a catch-ring type of idle hammering prevention mechanism. When the bit tool of the product is detached from an object under no load, air flows in and out through cylinder air holes to maintain uniform air pressure in the chamber. As a result, the hammering action stops. In this case, the projection at the tip of the striker fits into the O-ring (A) provided between damper holders (A) and (B) to prevent the air holes from being blocked by the recoiling striker. -2-
One-push type of bit mounting This product adopts a one-push quick bit mounting system without needing grip operation. First, fully insert the bit tool into the front cap hole until it stops, and then turn the bit tool while slightly pushing the bit tool. When the bit tool catches, push the bit tool there until it stops.
Front cap
Grip
Tool
Internal pressure adjustment mechanism An air passage is provided to connect inside the crankcase to the outside with a felt packing in the air passage. This passage only allows air (pressure) to pass and suppresses fluctuations in internal pressure. This stabilizes the hammering action and prevents idle striking and the leakage of grease. Crank cover Felt packing
Air
Felt packing (B) Rubber seal
Air passage (Inside the crankcase)
Easy-to-operate and double-molded switch handle and side handle The switch handle and side handle both feature a two-layer structure in which the plastic resin molded base is fully coated with a soft plastic resin. This gives the switch and side handles a soft feeling, and improves handle operability.
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SPECIFICATIONS 1. Specifications Model
DH 28PC
Capacity
Drill bit (Max. dia.): Concrete 28 (1-1/8”) Steel 13 (1/2”) Wood 32 (1-1/4”)
mm
Core bit (Max. dia.): 80 (3 -5/32”) Power source
-
AC single phase 50 Hz or 60 Hz
Voltage
V
110
120
220
230
240
Current
A
6.9
6.3
3.4
3.3
3.2
Power input
W
720
Type of motor
-
AC single-phase commutator motor
Enclosure
-
Materials : Nylon resin (Handle (A). (B), tail cover, crank cover) Polycarbonate resin (Housing) Aluminum alloy die casting (Crank case, cylinder case, gear cover) Colors : Green gray, green, black
Type of switch
-
Variable trigger switch
Types of handles
-
D-shaped handle and side handle
Full load rotation rate
min-1
0 – 800
Full load impact rate
min-1
0 – 4,000
Product* Weight
3.5 (7.7) kg (lbs.)
Packed
6.5 (14.3)
Packaging
-
Standard accessories
-
Plastic case • Plastic case -----------------------------------------------------1 • Side handle------------------------------------------------------1 • Stopper ----------------------------------------------------------1
* Excluding the cord and side handle
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2. Optional Accessories (1) Drilling work for through-hole drilling (rotation + hammering) Drill bit (SDS plus shank)
D L2 L1
D (mm)
Code No.
D (mm)
L1 (mm)
L2 (mm)
Code No.
4.0
303571
12.5
166
100
303592
4.3
303572
12.5
260
200
303607
303573
12.7
166
100
303593
4.8
303574
12.7
260
200
303608
5.0
303575
13.0
303578
14.0
303576
14.3
303577
14.3
260
200
303609
6.0
303579
14.5
166
100
303597
6.4
303580
14.5
260
200
303610
303581
15.0
303582
16.0
166
100
7.5
303583
16.0
260
200
8.0
303584
16.5
303585
17.0
166
100
303586
17.0
260
200
308485
303587
17.5
166
100
303602
303588
17.5
260
200
303612
4.5
5.0 5.5 6.0
6.5 7.0
8.5
L1 (mm)
110
L2 (mm)
50
160
100
110
50
160
160
100
100
9.0 9.5
160
100
10.0
303594 166
100
303595 303596
303598 303599 303611 303600 303601
10.0
260
200
303604
18.0
166
100
303603
10.5
160
100
303589
19.0
260
200
303613
10.5
260
200
303605
20.0
11.0
160
100
303590
22.0
12.0
166
100
303591
24.0
12.0
260
200
303606
25.0
-5-
303614 250
200
303615 308486
450
384
303616
(2) Drilling anchor holes (rotation + hammering) Drill bit (taper shank)
+ (a) Drill bit (taper shank)
(b) Taper shank adapter (SDS-plus shank)
(a) Drill bit (Taper shank) Outer dia. (mm)
(c) Cotter
(b) Taper shank adapter
(c) Cotter
Code No.
Type
Code No.
11.0 (7/16") 12.3 (1/2") 12.7 (1/2") 14.3 (9/16") 14.5 (9/16") 17.5 (11/16")
944460 944461 993038 944462 944500 944463
Morse taper No. 1
303617
21.5 (7/8")
944464
Morse taper No. 2
303618
Part name
Code No.
A-taper
303619
B-taper
303620
Code No.
944477
A taper shank adapter (A-taper or B-taper) is provided as an optional accessory, but without the drill bit.
(3) Anchor setting (hammering only) Anchor setting bar • Anchor setting bar to permit anchor setting operation with the rotary hammer
Anchor setting adapter (SDS-plus shank) Part name
Overall length
Code No.
Part name
Overall length
Code No.
W-1/4 Anchor setting adapter-A W-5/16 Anchor setting adapter-A W-3/8 Anchor setting adapter-A W-3/8 Anchor setting adapter-A
260 260 160 260
302976 302975 303621 302974
W-1/4 Anchor setting adapter-B W-5/16 Anchor setting adapter-B W-3/8 Anchor setting adapter-B W-3/8 Anchor setting adapter-B
260 260 160 260
302979 302978 303622 302977
Internal cone type
External cone type
• Anchor setting bar for manual anchor setting
+ Anchor setting adapter
Part name
Code No.
Part name
Code No.
W-1/4 Anchor setting adapter-A W-5/16 Anchor setting adapter-A W-3/8 Anchor setting adapter-A W-1/2 Anchor setting adapter-A W-5/8 Anchor setting adapter-A
971794 971795 971796 971797 971798
W-1/4 Anchor setting adapter-B W-5/16 Anchor setting adapter-B W-3/8 Anchor setting adapter-B W-1/2 Anchor setting adapter-B W-5/8 Anchor setting adapter-B
971799 971800 971801 971802 971803
Internal cone type
External cone type
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(4) Large hole boring (rotation + hammering) • Center pin, core bit, core bit shank and guide plate
+
(a) Guide plate
+
+
(b) Center pin
(c) Core bit
(d) Core bit shank (SDS-plus shank)
(a) Guide plate Core bit (outer diameter ) (mm)
Code No.
Core bit (outer diameter ) (mm)
Code No.
32 (1-1/4")
982686
50 (2")
982690
35 (1-3/8")
982687
65 (2-9/16")
982691
38 (1-1/2")
982688
80 (3-5/32")
982692
45 (1-3/4")
982689
(b) Center pin (Do not use bits with outer diameters of 25 mm (1") and 29 mm (1-1/8")) Part name
Code No.
Center pin (A) Core bit (outer diameter) 32, 35, 38 mm (1-1/4", 1-3/8", 1-1/2")
982684
Center pin (B) Core bit (outer diameter) 45, 50, 65, 80 mm (1-3/4", 2", 2-9/16", 3-5/32")
982685
(c) Core bit with guide plate (The guide plate is not supplied with 25 mm (1") and 29 mm (1-1/8") outer diameter core bits.) Outer diameter (mm)
Code No.
Outer diameter (mm)
Code No.
25 (1")
982672
45 (1-3/4")
982677
29 (1-1/8")
982673
50 (2")
982678
32 (1-1/4")
982674
65 (2-9/16")
982679
35 (1-3/8")
982675
80 (3-5/32")
982680
38 (1-1/2")
982676
(d) Core bit shank (SDS-plus shank) Part name
Overall length
Code No.
Core bit shank (A)
Core bit (outer diameter) 25 -- 38 mm (1" --1-1/2")
105 mm (4-1/8") 300 mm (12")
303625 303626
Core bit shank (B)
Core bit (outer diameter) 45 -- 80 mm (1-3/4" -- 3-5/32")
300 mm (12")
303627
(5) Bolt placing operation with chemical anchor (rotation + hammering)
+ (Commercially available standard socket)
Chemical anchor adapter (SDS-plus shank)
Part name
Code No.
12.7 mm (1/2") Chemical anchor adapter
303044
19.0 mm (3/4") Chemical anchor adapter
303045
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(6) Crushing operations (hammering only)
Bull point (round type) (SDS-plus shank) Code No. 303046
Square bull point (SDS-plus shank) Code No. 316656
(7) Groove digging and edging (hammering only)
Cold chisel (SDS-plus shank) Code No. 316657
Cutter (SDS-plus shank) Code No. 316658
(8) Grooving (hammering only)
Grooving chisel (SDS-plus shank) Code No. 316659 (9) Drilling holes and driving screws (rotation only) • Drill chuck, chuck adapter (G), special screw and chuck wrench
+ Special screw
+
13 mm (1/2") Drill chuck (13VLRB-D)
Chuck adapter (G) (SDS-plus shank)
Chuck wrench NOTE: When using the tool to loosen screws, open the three jaws of the drill chuck and securely fix the drill chuck to chuck adapter (G) with the special screw (a left-hand threaded M6 screw) for mounting the drill chuck onto chuck adapter (G). Part name
Code No.
Chuck adapter (G) for SDS-plus shank system
303623
13 mm (1/2") Drill chuck 13VLRB-D (with chuck wrench)
321814
Special screw (M6 left-hand threaded)
995344
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• Cross-recessed head (Phillips) bit [Overall length: 70 mm] (For use with cross-recessed head (Phillips) screws)
• Slotted-head (minus) bit [Overall length: 50 mm] (For use with slotted-head (minus) screws)
Tip thickness
Stamped bit No. Bit No.
Code No.
Applicable screw dia. (mm)
Bit tip thickness Code No.
Applicable screw dia. (mm)
No. 2
955654
4 -- 5
0.8
955658
4
No. 3
955655
6 -- 8
1.0
955673
5 -- 6
(10) Driving screws (rotation only) • Plus driver bit and chuck adapter (D)
+ Plus driver bit [overall length: 25 mm] (for cross-recessed head screws) Bit No.
Screw size
Code No.
No. 2
3 -- 5 mm
971511Z
No. 3
6 -- 8 mm
971512Z
Chuck adapter (D) (SDS-plus shank)
Part name Chuck adapter (D) for SDS-plus shank system
(11) Grease for the hammer and hammer drill • Containing 500 g (17.64 oz) Code No. 980927
• Containing 30 g (1.06 oz.) Code No. 981840 70 g (2.50 oz.) Code No. 308471
(12) Dust cup, Dust collector • Dust cup
Code No. 971787
• Dust collector (B) ass’y
Code No. 306885
-9-
Code No. 303624
COMPARISON WITH SIMILAR PRODUCTS
1. Comparison of Specifications
(Superior specifications:
Maker
HITACHI
Model name
DH 28PC
C
B
28 (1-1/8”)
28 (1-1/8”)
28 (1-1/8”)
13 (1/2”)
13 (1/2”)
13 (1/2”)
32 (1-1/4”)
32 (1-1/4”)
32 (1-1/4”)
mm
80 (3-5/32”)
80 (3-5/32”)
80 (3-5/32”)
W
720
800
720
Concrete Drill bit dia. Steel
mm
Capacity Wood Core bit dia. Power input Full-load rotation rate
min-1
0 – 800
0 - 1,100 (No-load)
0 - 800
Full-load impact rate
min-1
0 - 4,000
0 - 4,500 (No-load)
0 - 4,000
Impact energy No-load noise level (measured) Full-load noise level (measured) Full-load vibration level (Tri-axial, measured)
J
3.5
2.9
3.3
dB(A)
85.4
86.3
87.2
dB(A)
87.9
88.8
86.2
m/s2
20.7
20.1
27.4
316 (12-7/16”)
320 (12-5/8”)
332 (13-1/16”)
208 (8-3/16”)
225 (8-55/64”)
208 (8-3/16”)
102 (4”)
89 (3-1/2”)
93 (3-21/32”)
3.5 (7.7)
3.2 (7.0)
3.3 (7.3)
Length Tool size
Height
mm
Width Weight*
kg (lbs.)
Mode
-
3
3
2
Mounting the drill bit
-
One push
One push
One push
Reversing switch
-
Equipped
Equipped
None
* Weight does not include the cord and side handle.
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)
2. Comparison of Drilling Speed Drilling speed varies considerably depending on the work conditions. Use the factory test results shown in the figure below for comparison purposes only. • Comparison of drilling speed 700 HITACHI DH28PC 600
C
Drilling Speed (mm/min)
B HITACHI DH30PC2
500
HITACHI DH25PB 400
300
200
100
0 10
12
14
Direction
16
18 20 Drill Bit Dia. (mm)
22
24
: Downward drilling
Pushing force : 98 N (10 kgf) Test material : Concrete panel with compression strength of 2,352 N/cm2 (240 kgf/cm2)
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26
28
PRECAUTIONS ON SALES PROMOTION 1. Safety instructions In the interest of promoting the safest and most efficient use of the Model DH 28PC Rotary Hammers by all of our customers, it is very important that when concluding a sale that the salesperson carefully ensure that the buyer seriously recognizes the importance of the Handling Instructions, and fully understands the precautions listed on the Caution Plate and Name Plate attached to each tool.
A. Handling Instructions 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 electric tool cannot be completely eliminated. Accordingly, the Handling Instructions list general precautions and suggestions on the use of electric power tools, and specific precautions and suggestions on the use of rotary hammers to enhance the safe, efficient use of the tool by customers. Salespersons must be thoroughly familiar with the Handling Instructions in order to offer appropriate guidance to the customer during sales promotion activities.
B. Caution Plate The Model DH 28PC unit is provided with a Caution Plate (illustrated below) that lists basic safety precautions on use of the tool. Carefully ensure that the customer fully understands and follows these precautions before using the tool. [ For the USA and Canada ]
[ For China ]
[ For Mexico ]
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REFERENCE MATERIALS 1. Grease replacement procedures The hammering section and gear change section use different types of grease. Grease need not be replenished unless the tool is disassembled for repair or grease is leaking due to a damaged seal. A special grease is used for the hammering section. After disassembling the hammering section (inside the cylinder case and crank case), carefully wipe old grease off the parts and fill the crank case (on the connecting rod side) with 25 g of grease and the crank case (on the cylinder side) with 5 g. Be careful not to overfill with an excessive amount of grease, which could cause hammering failure. The gear change section (inside the gear cover) uses Hitachi Motor Grease No. 29. The proper amount of grease is 15 g. Never use the special grease for the hammering section in the gear change section. Otherwise, the special grease will leak into the motor section and cause subsequent trouble. Periodically change the grease in the slip clutch. Fully fill the slip clutch with Cosmos Molybdenum Grease No. 2.
2. Structure of the Model DH 28PC Rotary Hammer Steel ball
Cylinder
Clutch
Bevel gear
Key rail
Second gear
Bevel pinion
Armature
• Torque transmission The rotational force of the bevel gear is transmitted to the cylinder through the clutch and rotates the cylinder. The front side of the cylinder also serves as a drill bit holder. The drill bit inserted into the cylinder is coupled with two key rails and one steel ball to transmit the rotation.
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3. “Three-Mode” Changeover Mechanism The user can select "Rotation + Hammering," "Rotation only," or "Hammering" mode by operating the mode change lever of the product. Each of the three modes is explained below. Operate the change lever while pressing the pushbutton switch. • Rotation and hammering Set the change lever to the "Rotation + hammering"( mark) position. The claw of the bevel gear engages with the claw of the clutch. Rotational force is transmitted to the cylinder coupled with the clutch and rotates the bit. At this time, cylinder air hole B is blocked by the slide sleeve. When the bit is pressed against an object, the striker blocks cylinder air hole A to form an air chamber between the piston and striker. Changes in air pressure inside the air chamber cause the striker to move. Hammering force is thus transmitted to the second hammer and then to the bit tool. Bevel gear
Lock sleeve Slide sleeve
Clutch Cylinder Piston Striker Air hole A Air hole B Change lever
• Hammering only Set the change lever to the "Hammering only" ( mark) position. The bevel gear disengages from the clutch to cut off the transmission of rotational force. The spline in the inner periphery of the lock sleeve engages with the spline on the end surface of the clutch. This locks both cylinder rotation and bit rotation at the same time. At this time, cylinder air hole B is blocked by the slide sleeve. When the bit is pressed against an object, the striker blocks cylinder air hole A to form an air chamber between the piston and striker. Changes in air pressure inside the air chamber cause the striker to move. Hammering force is thus transmitted to the second hammer and then to the bit tool. Lock sleeve Bevel gear Slide sleeve Clutch
Cylinder Striker
Piston Air hole A
Air hole B Change lever
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• Rotation only Set the change lever to the "Rotation only" ( mark) position. The claw of the bevel gear engages with the claw of the clutch. Rotational force is transmitted to the cylinder coupled with the clutch and rotates the bit. The slide sleeve moves to the front end side as the lock sleeve moves there. This keeps cylinder air hole B open. As a result, air pressure inside the air chamber remains the same and hammering force is not transmitted.
Lock sleeve Bevel gear Slide sleeve Clutch
Cylinder Striker
Piston Air hole A
Air hole B Change lever
• Neutral This product has a Neutral mode to be used to determine the working position of a bit tool such as a cold chisel. Set the change lever to the "Neutral" ( mark) position. The bevel gear disengages from the clutch and cuts off the transmission of rotational force. The lock sleeve also disengages from the clutch so that the cylinder can rotate freely. In this state, the user can turn a bit tool to the desired working position. Lock sleeve
Bevel gear
Slide sleeve Clutch
Cylinder Striker
Piston Air hole A
Air hole B Change lever
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Refer to the Technical Data and Service Manual for the model indicated below.
DH 24PC2 / No. E479, DH 24PC3 / No. E489, DH 30PC2 / No. E494 1. O-ring replacement 2. Striking operation 3. Mechanism to prevent idle hammering 4. Slip clutch mechanism 5. Sealing and dust-proof structure 6. Speed control 7. Handle and side handle 8. Caution when using “Rotation only” (No hammering) function 9. Drill bits 10. Tool retainer 11. Dust collector (B)
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REPAIR GUIDE Be sure to disconnect the power cord plug from the wall outlet before conducting repair. Otherwise, the motor may suddenly run, posing a very dangerous situation.
1. Precautions on Disassembly and Reassembly The [Bold] numbers in the descriptions below correspond to item numbers in the parts list and exploded view assembly diagram for the Model DH 28PC.
Disassembly 1. Disassembly of the tool retainer Fully pull Grip [3] in the arrow direction and remove Front Cap [1]. Forcefully pull Front Cap [1] to remove it from Cylinder [21]. Then remove Stopper Ring [29] by using the stopper ring puller while pulling Grip [3]. You can then remove Grip [3], Ball Holder [4], Steel Ball D7.0 [20], Holder Plate [5], and Holder Spring [6] from Cylinder [21].
Steel Ball D7.0 [20] Grip [3]
Front Cap [1]
Holder Spring [6] Ball Holder [4]
Cylinder [21] Stopper Ring [29]
Holder Plate [5]
2. Disassembly of the hammering mechanism (a) Cylinder Case and Cylinder First, remove Seal Lock Hex. Socket Hd. Bolt M4 x 12 [57] from Change Lever [58], and then demount Change Lever [58] and Lever Holder [59]. Remove Hex. Socket Hd. Bolt (W/Flange) M4 x 10 [43], Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [98], Tapping Screw (W/Flange) D5 X 20 (Black) [78], and Tapping Screw (W/Flange) D4 X 25 (Black) [44]. Remove Handle (A). (B) Set [40] from Crank Case [104] and Housing Ass'y [74]. Then remove Tapping Screw (W/Flange) D4 X 16 (Black) [82]. Remove Tail Cover [81] from Housing Ass'y [74]. Remove Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [98] from Crank Cover [99], and then demount Crank Cover [99] and Rubber Seal [102] from Crank Case [104]. Remove Retaining Ring For D35 Hole [60] by using stopper ring puller and demount Lever Shaft [61].
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Remove Seal Lock Hex. Socket Hd. Bolt M6 x 20 [7] from Cylinder Case [8] and then separate Cylinder Case [8], Cylinder [21], and other assembly parts from Crank Case [104]. Demount Clutch [33] and Clutch Spring [32] from the assembly parts. Cylinder Case [8] Clutch [33]
Cylinder [21] Clutch Spring [32]
Push out Cylinder [21] from the front end. You can then separate the assembly parts (Cylinder [21], Second Hammer [23], Striker [30], Slide Sleeve [19], Lock Sleeve [17], Lock Spring [16], Ball Bearing 6905DDUCMNS7S [14], etc.) from Cylinder Case [8]. Second Hammer [23]
Slide Sleeve [19]
Lock Spring [16]
Cylinder [21] Striker [30] Felt Packing (A) [13]
Lock Sleeve [17] Ball Bearing 6905DDUCMNS7S [14]
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Remove Felt Packing (A) [13] from the assembly parts and insert the tip of the bearing puller’s hook into the space between Ball Bearing 6905DDUCMNS7S [14] and Washer (A) [70]. In this state, stand Cylinder [21] upright, then use a hand press to push the end face of Cylinder [21] and then demount Ball Bearing 6905DDUCMNS7S [14]. You can then separate Washer (A) [70], Lock Spring [16], Lock Sleeve [17], Washer (B) [67], and Slide Sleeve [19]. Cylinder [21] and other parts may pop up under spring pressure when you demount Ball Bearing 6905DDUCMNS7S [14]. Therefore, be very careful. Hand press
Cylinder [21] Ball Bearing 6905DDUCMNS7S [14]
Hook of bearing puller
Washer (A) [70] Lock Spring [16]
Washer (B) [67]
Lock Sleeve [17]
Slide Sleeve [19]
-19-
(b) Components in the Cylinder Remove Striker [30] from inside of separated Cylinder [21]. Then insert a punch (or thin but rigid material) into the inspection hole of Cylinder [21], hammer Stopper Ring [29] to move it from the groove in Cylinder [21] in the arrow direction. Use a spring hook (J201, No.970977) to pull out Stopper Ring [29] from the groove in the arrow direction. You can then remove Damper Holder (B) [28], Damper Holder (A) [26], ORing (A) [27], Damper (B) [25], Damper Washer [24], and Second Hammer [23] from Cylinder [21]. Punch etc.
Damper Washer [24] Second Hammer [23]
Spring hook
Cylinder [21] Damper (B) [25]
Stopper Ring [29]
Damper Holder (A) [26]
Damper Holder (B) [28] O-Ring (A) [27]
(c) Piston Piston [36] remains in Crank Case [104]. Turn Crank Shaft [106], move Piston [36] toward the lower dead end, then remove Connecting Rod [37] from Crank Shaft [106] and remove the piston assembly.
Crank Case [104] Crank Case [104] Piston [36]
Crank Shaft [106] Connecting Rod [37]
-20-
Crank Shaft [106] Connecting Rod [37]
(d) First Gear and Crank Shaft Remove Seal Lock Hex. Socket Hd. Bolt M5 x 40 [103] from Crank Case [104], and then separate Crank Case [104] from Gear Cover [97]. Place Crank Case [104] on an adequate tool rest with its Connecting Rod [37] side facing downward, then use an adequate steel rod and a hand press to push the end of Crank Shaft [106]. Crank Shaft [106], First Gear [111], and Ball Bearing 608VVC2PS2L [96] then come off.
Hand press
Suitable steel bar Ball Bearing 608VVC2PS2L [96]
First Gear [111]
Crank Shaft [106] Crank Case [104]
Work bench
-21-
Reassembly Perform reassembly by reversing the order of the disassembly procedure. However, special attention should be given to the following items.
1. Reassembly of the hammering mechanism (a) First Gear and Crank Shaft Press-fit Oil Seal (B) [84] into Crank Case [104], mount O-Ring (S-32) [109], fit Ball Bearing 6002DDCMPS2L [108], and mount Retaining Ring for D32 Hole [110] by using the stopper ring puller. Use the hand press to press-fit Crank Shaft [106] into Ball Bearing 6002DDCMPS2L [108]. Then fit Feather Key 3 x 3 x 8 [107] into the groove of Crank Shaft [106], support the flat face of Crank Shaft [106] on an adequate steel rod, and then use an adequate tool to press-fit First Gear [111]. Confirm that Feather Key 3 x 3 x 8 [107] is firmly seated in the key groove of First Gear [111] before press-fitting. Be sure to support the flat surface of Crank Shaft [106] with the steel rod since the abutting surface has steps. Hand press Crank Case [104] Suitable steel bar
Crank Shaft [106] Oil Seal (B) [84] O-Ring (S-32) [109] Ball Bearing 6002DDCMPS2L [108] Retaining Ring for D32 Hole [110] First Gear [111] Feather Key 3 x 3 x 8 [107] Suitable tool
(b) Piston Remount O-Ring (I.D 19.2) [31] on Piston [36], apply a small amount of power tool grease No.29 to Piston Pin [35], and then insert Piston Pin [35] into Piston [36] and Connecting Rod [37]. Then move Crank Shaft [106] toward the lower dead end, insert the piston assembly from the cylinder case side of Crank Case [104], and mount it on Crank Shaft [106]. Crank Case [104]
Crank Shaft [106] Crank Case [104]
Piston [36]
O-ring [62]
Crank Shaft [106]
Connecting Rod [37]
Piston Pin [35]
Connecting Rod [37]
-22-
(C) Components in the Cylinder Mount O-Ring (C) [22] on Second Hammer [23], bundle Second Hammer [23], Damper Washer [24], Damper (B) [25], Damper Holder (A) [26], O-Ring (A) [27], and Damper Holder (B) [28] as one unit, and then insert the unit into Cylinder [21] that is laid flat. Then push it further until it stops. Reassemble Damper Washer [24] with the round inner diameter surface aligned with the round surface of Second Hammer [23]. Do not reverse the assembling direction of Damper (B) [25]. Insert Stopper Ring [29] into Cylinder [21] and use an adequate pipe to push it into the cylinder groove. Confirm that Stopper Ring [29] is firmly seated in the groove by looking through the two inspection holes on Cylinder [21]. Then insert Striker [30] with ORing [62] into Cylinder [21]. Second Hammer [23]
Cylinder [21]
Damper Holder (A) [26]
O-Ring (C) [22] O-Ring (A) [27]
Damper (B) [25] Damper Washer [24] Cylinder [21]
Damper Holder (B) [28]
Hole (2 pcs.)
Groove
Stopper Ring [29]
Pipe
(d) Cylinder, Cylinder Case and Crank Case Fit Slide Sleeve [19], Washer (B) [18], Lock Sleeve [17], Lock Spring [16], and Washer (A) [15] to the periphery of Cylinder [21]. Fit these parts to Cylinder [21] so that Ball Bearing 6905DDUCMNS7S [14] does not come off, and then fully press-fit Ball Bearing 6905DDUCMNS7S [14] to Cylinder [21] until it stops. If Ball Bearing 6905DDUCMNS7S [14] is not firmly fitted to Cylinder [21], Ball Bearing 6905DDUCMNS7S [14] may pop up under the spring pressure of Lock Spring [16]. Therefore, be sure to firmly push Ball Bearing 6905DDUCMNS7S [14]. Then fit Felt Packing (A) [13] to the periphery of Cylinder [21]. Reassemble Oil Seal [10], Damper (A) [11], Damper Washer (B) [12], O-Ring (1AS-50) [9] in Cylinder Case [8], and then insert the cylinder assembly into Cylinder Case [8]. In this case, align the depressed portion in the inner periphery of Cylinder Case [8] with the projected portion in the periphery of Lock Sleeve [17] when inserting the cylinder assembly. Reassemble Clutch Spring [32], Clutch [33], and Bevel Gear [34] from the rear end of Cylinder [21], and then couple Cylinder Case [8] with Crank Case [104]. Align the projected portion in the inner periphery of Clutch [33] with the groove in the periphery of Cylinder [21] during assembly. For easy coupling of Cylinder Case [8] with Crank Case [104], rotate Crank Shaft [106] to move Piston [36] toward the upper dead end, and then insert Piston [36] into Cylinder [21] in this state.
-23-
Damper Washer (B) [12]
Oil Seal [10]
O-Ring (1AS-50) [9]
Damper (A) [11]
Cylinder [21]
Clutch [33]
Felt Packing (A) [13] Clutch Spring [32]
Cylinder Case [8] Crank Case [104]
Bevel Gear [34]
Connecting Rod [37]
Piston [36]
Crank Shaft [106]
(e) Change Lever Fit O-Ring [62] to Crank Case [104] and insert Lever Shaft [61] as shown in the figure. Use the stopper ring puller to remount Retaining Ring for D35 Hole [60], then rotate Lever Shaft [61] by 90 degrees as shown in the figure ("Rotation + hammering" position). Use Change Lever [58] for easy rotation of Lever Shaft [61]. Reassemble Lever Holder [59] and then insert Change Lever [58] along with Lever Spring [64], Pushing Button [65], and Pin D2 x 10 [63] at the "Rotation + hammering" position. Press Pushing Button [65] of Change Lever [58] and confirm that Pin D2 x 10 [63] of Change Lever [58] is firmly seated in the groove of Lever Holder [59]. Then tighten Seal Lock Hex. Socket Hd. Bolt M4 x 12 [57]. Crank Case [104]
Lever Shaft [61]
Retaining Ring for D35 Hole [60]
-24-
(f) Fan Guide Assemble Fan Guide [69] into Housing Ass'y [74] with the projected portion of Fan Guide [69] aligned with the depressed portion of Housing Ass'y [74].
Housing Ass’y [74] Concave portion
Fan Guide [69]
Convex portion
(g) Crank Cover Firmly reassemble Rubber Seal [102] in Crank Case [104] in the direction shown below. Reassemble Crank Cover [99] along with Felt Packing [101] and Felt Packing (B) [100] inside Crank Case [104]. Tighten Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [98]. Crank Case [104]
Crank Cover [99]
Felt Packing (B) [100]
Hole Hole
Rubber Seal [102]
Felt Packing [101]
Crank Cover [99]
Rubber Seal [102]
Crank Case [104]
-25-
(h) Oil Seal and O-Ring Carefully handle all oil rings and seals (Cylinder Case [8] Oil Seal [10], O-Ring (1AS-50) [9], Oil Seal (B) [84] and O-Ring (S-32) [109] of Crank Case [104], Second Hammer [23] O-Ring (C) [22], O-Rings (I.D 19.2) [31] of Piston [36] and Striker [30], O-Ring (A) [27], lever shaft O-Ring [62], Rubber Seal [102])) so as not to damage any of these parts.
2. Application of lubricant • Filling Hitachi Motor Grease No. 29 Apply 15 g of grease to Crank Case [104] and Gear Cover [97] for lubricating the gears. • Application of Hitachi Motor Grease No. 29 Apply grease to Armature [68] pinion, Steel Ball D7.0 [20], and O-Ring [62]. • Filling special grease (for the hammer and hammer drill) Apply 25 g of grease to the Connecting Rod [37] side of Crank Case [104], and 5 g of grease to the Cylinder [21] side. • Application of special grease (for the hammer and hammer drill) Apply special grease to the inner diameter lip portions of Oil Seal (B) [84] and Oil Seal [10], the inner diameter portion of Connecting Rod [37], the outer diameter portions of Piston [36], O-Ring [62], Damper (A) [11], O-Ring (C) [22], Damper (B) [25], O-Ring (A) [27], O-Ring [62], the outer diameter portion of Lock Sleeve [17], the slide portions of Second Hammer [23] and Striker [30], the inner diameter portions of Slide Sleeve [19] and Clutch [33], and both the inner and outer diameter portions of Bevel Gear [34].
3. Tightening torque Apply screw locking agent TB1401 to all hex. socket head bolts M4, M5 and M6. NOTE: Be sure to apply screw locking agent (Three Bond TB1401) to the threads during reassembly. Otherwise, any bolts becoming loose due to vibration may damage the tool body. M6
M5
M4
• Seal Lock Hex. Socket Hd. Bolt M6 x 20 [7] (For mounting the cylinder case) ------------------------• Seal Lock Hex. Socket Hd. Bolt M5 x 40 [103] (For mounting the crank case) ---------------------------• Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [98] (For mounting the crank cover) --------------------------• Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [98] (For mounting the handle) ---------------------------------• Hex. Socket Hd. Bolt (W/Flange) M4 x 10 [43] (For mounting the handle) ---------------------------------• Seal Lock Hex. Socket Hd. Bolt M4 x 12 [57] (For mounting the change lever) -------------------------• Hex. Hd. Tapping Screw D5 x 40 [72] -------------------• Tapping Screw (W/Flange) D5 x 20 [78] ----------------• Tapping Screw (W/Flange) D4 [44] [47] [82]------------
-26-
9.80+ 1.96 N•m (100+ 20 kgf•cm) 0
0
+ 20 7.84+ 1.96 N•m (80 0 kgf•cm) 0
+ 1.96 + 20 7.84 0 N•m (80 0 kgf•cm) 3.92 ± 0.49 N•m (40 ± 5 kgf•cm)
1.96 ± 0.49 N•m (20 ± 5 kgf•cm) 1.47 ± 0.49 N•m (15 ± 5 kgf•cm) 2.94 ± 0.49 N•m (30 ± 5 kgf•cm) 2.94± 0.49 N•m (30 ± 5 kgf•cm) 1.96± 0.49 N•m (20 ± 5 kgf•cm)
4. Internal wiring (1) Wiring diagram for products without a noise suppressor
Stator
Gray
Black or Brown
White
Lead wire (Brown)
Armature
Cord
White or Blue
Red
Stator
Black
Lead wire (Blue)
Reversing switch
Speed control switch
(2) Wiring diagram for products with a noise suppressor
Black or Brown
Gray
Stator
White
Lead wire (Brown)
Armature
Cord
Noise suppressor White or Blue
Red
Stator
Black
Lead wire (Blue)
Reversing switch
Speed control switch
5. Wiring around switches (1) Wiring of the reversing switch Insert Internal Wire (Blue) [45] to terminal (1) marked on the reversing switch and Internal Wire (Brown) [46] to terminal (2) as shown in the figure. Insert the lead wire (White) from Stator [73] to terminal (3) and the lead wire (Black) from Stator [73] to terminal (4). Gently pull on each inserted lead wire to confirm that the wires do not come out. For wire disconnection, insert the tip of a small slotted screwdriver or needle into the hole on the side of each terminal, and then pull out the wire.
Internal Wire (Blue) [45]
Stator [73] : Black
-27-
Stator [73] : White
Internal Wire (Brown) [46]
(2) Wiring of the speed control switch Insert a Black or Brown cord to terminal (1 ) marked on the variable trigger switch and a White or Blue cord to terminal (2 ) as shown in the figure, then tighten their screws (with tightening torque of 0.6 ±0.2 N•m (6 ±2 kgf•cm). Insert the lead wire (Gray) from Stator [73] to terminal (M1), the other lead wire (Red) from Stator [73] to terminal (M2), and the lead wires from Noise Suppressor [51] to the terminals (C1 and C2). Gently pull on each inserted cord or lead wire to confirm that it does not come out. For wire disconnection, insert the tip of a small slotted screwdriver or needle into a hole on the side of each terminal, and then pull out the wire.
Cord [55] : Black or Brown
Cord [55] : White or Blue
C1
2
1
M2 M1
C2
Stator [73]: Red Stator [73]: Gray
Noise Suppressor [51]
6. Insulation tests Upon completing completion of disassembly and repair, measure the insulation resistance and conduct a dielectric strength test as follows: Insulation resistance : 7 Mȍ or more using a DC 500 V megohm tester Dielectric strength : AC 4,000 VAC for one minute, with no abnormalities---220 to 240 V (and 110 V for UK products) : AC 2,500 VAC for one minute, with no abnormalities---110 to 120 V (except UK products)
7. No-load current value After no-load operation for 30 minutes, the no-load current values should be as follows: Voltage (V)
110
120
220
230
240
Current (A) max.
3.6
3.5
2.1
2.1
2.0
-28-
STANDARD REPAIR TIME (UNIT) SCHEDULES MODEL
Variable Fixed
10
20
30
40
50
Work Flow DH 28PC Housing Ass’y Stator
Tail Cover
Handle (A). (B) Set Switch Cord Cord Armor D8.8
Gear Cover
Armature Ass’y Ball Bearing 6001DDCMPS2L Ball Bearing 608VVC2PS2L
Crank Cover Rubber Seal
General Assembly
Front Cap Grip Ball Holder Holder Plate Holder Spring
O-ring Lever Shaft Lever Holder Change Lever Lever Spring Pushing Button
Cylinder Case Oil Seal Damper (A) Ball Bearing 6905DDUCMNS7S
Slide Sleeve Washer (A) Washer (B) Lock Spring Lock Sleeve Clutch Clutch Spring
Striker O-ring (I.D 19.2) x 2
-29-
Crank Case Crank Shaft Oil Seal (B) Ball Bearing 6002DDCMPS2L O-ring (S-32) First Gear Ball Bearing 608VVC2PS2L Piston Connecting Rod Bevel Gear
Slip Clutch Ass’y Bevel Pinion Oil Seal (B) Collar Sleeve Ball Bearing 6001DDCMPS2L Second Gear Ball Bearing 608VVC2PS2L
Cylinder Second Hammer Damper Washer Damper (B) Damper Holder (A) Damper Holder (B)
60 min.
LIST NO. F408
ROTARY HAMMER Model DH 28PC
2009㨯9㨯7 (E1) 503
502
501
1 2
508
3
507
4
509
98 510
99
506
5
505
6
100
504
7
10 11
101
8
12
102
9
13
14 15
103 16
98 17
20
62
18 19
21
104
61 60 59
22
105
58
23
57
24
56
25 26
63
27 28
30
29
31
83
64 84
65 32
85 33 34 31
66
86
67
87
35 36
88
37
68
89
38
90
110 89
72
43
111 93
73
39 44
46
95
77
48
45
76
47
96
75 78
52 53
54
96
94
74
49
109
92
71
41
108
91
70
97
79
55
80 112 83 87
Rev.1
84
89
69
42
50
107
39
40
51
106
81
85 96
82 ᒻޓޓޓฬ
DH28PC
ዤޓᐲ
22%
࿑⇟ޓޓޓ
TU01659
PARTS ITEM NO.
DH 28PC
CODE NO.
DESCRIPTION
NO. USED
1
306-345
FRONT CAP
1
2
306-340
STOPPER RING
1
3
324-527
GRIP
1
4
330-192
BALL HOLDER
1
5
324-526
HOLDER PLATE
1
6
330-191
HOLDER SPRING
1
7
992-803
SEAL LOCK HEX. SOCKET HD. BOLT M6 X 20
4
8
330-174
CYLINDER CASE
1
9
990-067
O-RING (1AS-50)
1
10
328-867
OIL SEAL
1
11
330-175
DAMPER (A)
1
12
330-184
DAMPER WASHER (B)
1
13
304-020
FELT PACKING (A)
1
14
690-5DD
BALL BEARING 6905DDUCMNS7S
1
15
330-176
WASHER (A)
1
16
330-177
LOCK SPRING
1
17
330-178
LOCK SLEEVE
1
18
330-179
WASHER (B)
1
19
330-187
SLIDE SLEEVE
1
20
959-156
STEEL BALL D7.0 (10 PCS.)
1
21
330-180
CYLINDER
1
22
323-058
O-RING (C)
1
23
330-181
SECOND HAMMER
1
24
330-182
DAMPER WASHER
1
25
330-183
DAMPER (B)
1
26
331-672
DAMPER HOLDER (A)
1
27
330-186
O-RING (A)
1
28
331-673
DAMPER HOLDER (B)
1
29
323-062
STOPPER RING
1
30
330-185
STRIKER
1
31
319-577
O-RING (I.D 19.2)
2
32
330-188
CLUTCH SPRING
1
33
330-189
CLUTCH
1
34
330-190
BEVEL GEAR
1
35
330-173
PISTON PIN
1
36
330-172
PISTON
1
37
319-585
CONNECTING ROD
1
NAME PLATE
1
39
886-342
HITACHI PLATE
2
40
330-256
HANDLE (A). (B) SET
1
*
41
331-677
SWITCH
1
*
41
330-214
SWITCH (1P PILLAR TYPE)
1
42
322-853
PUSHING BUTTON
1
43
316-228
HEX. SOCKET HD. BOLT (W/FLANGE) M4 X 10
4
44
307-028
TAPPING SCREW (W/FLANGE) D4 X 25 (BLACK)
3
*
45
330-254
INTERNAL WIRE 18AWG X 300L (BLUE)
1
*
45
330-217
INTERNAL WIRE 16AWG X 300L (BLUE)
1
*
46
330-255
INTERNAL WIRE 18AWG X 300L (BROWN)
1
*
46
330-218
INTERNAL WIRE 16AWG X 300L (BROWN)
1
47
984-750
TAPPING SCREW (W/FLANGE) D4 X 16
2
38
-2-
*ALTERNATIVE PARTS
REMARKS
FOR USA, CAN
FOR USA, CAN, GBR (110V) FOR USA, CAN, GBR (110V) 9 - 09
PARTS ITEM NO.
DH 28PC
CODE NO.
DESCRIPTION
NO. USED
REMARKS
48
960-266
CORD CLIP
1
49
953-327
CORD ARMOR D8.8
1
*
50
317-492
SUPPORT (B)
1
FOR EUROPE
*
51
325-566
NOISE SUPPRESSOR
1
FOR EUROPE
52
321-322
VINYL TUBE
1
*
53
981-500
INTERNAL WIRE
1
FOR EUROPE
*
54
959-140
CONNECTOR 50091 (10 PCS.)
1
FOR EUROPE
*
55
500-390Z CORD
1
(CORD ARMOR D8.8)
*
55
500-465Z CORD
1
(CORD ARMOR D8.8) FOR GBR (110V)
*
55
500-446Z CORD
1
(CORD ARMOR D8.8) FOR GBR (230V)
*
55
500-249Z CORD
1
(CORD ARMOR D8.8) FOR USA, CAN
*
55
500-424Z CORD
1
(CORD ARMOR D8.8) FOR KUW, SIN
*
55
500-457Z CORD
1
(CORD ARMOR D8.8) FOR CHN
*
55
500-235Z CORD
1
(CORD ARMOR D8.8) FOR IND
56
321-867
1
57
983-162
SEAL LOCK HEX. SOCKET HD. BOLT M4 X 12
1
58
321-309
CHANGE LEVER
1
59
330-207
LEVER HOLDER
1
60
939-556
RETAINING RING FOR D35 HOLE (10 PCS.)
1
61
330-206
LEVER SHAFT
1
62
330-205
O-RING
1
63
321-312
PIN D2 X 10
1
64
321-310
LEVER SPRING
1
65
321-311
PUSHING BUTTON
1
66
600-1DD
BALL BEARING 6001DDCMPS2L
1
LEVER LABEL
67
971-736
WASHER (B)
1
*
68
360-857C ARMATURE 110V-115V
1
*
68
360-857U ARMATURE ASS'Y 120V
1
*
68
360-857E ARMATURE 220V-230V
1
*
68
360-857F ARMATURE 240V
1
69
330-202
FAN GUIDE
1
70
982-631
WASHER (A)
1
71
608-VVM BALL BEARING 608VVC2PS2L
1
72
980-864
2
*
73
340-739C STATOR 110V-115V
*
73
340-739G STATOR 120V
1
*
73
340-739E STATOR 220V-230V
1
*
73
340-739H STATOR 220V-230V
1
*
73
340-739J STATOR 240V
1
74
330-201
HOUSING ASS'Y
1
75
935-829
BRUSH CAP
2
76
999-043
CARBON BRUSH (1 PAIR)
2
77
957-051
BRUSH HOLDER
2
78
302-089
TAPPING SCREW (W/FLANGE) D5 X 20 (BLACK)
2
79
938-477
HEX. SOCKET SET SCREW M5 X 8
2
80
310-111
BEARING BUSHING (B)
1
81
330-203
TAIL COVER
1
82
307-811
TAPPING SCREW (W/FLANGE) D4 X 16 (BLACK)
2
83
330-196
BEVEL PINION
1
84
981-851
OIL SEAL (B)
2
9 - 09
HEX. HD. TAPPING SCREW D5 X 40
INCLUD. 66, 67, 70, 71
1
*ALTERNATIVE PARTS
FOR SIN INCLUD. 77, 79
-3-
PARTS ITEM NO.
DH 28PC
CODE NO.
DESCRIPTION
NO. USED
85
330-197
COLLAR
1
86
330-194
SLEEVE
1
87
600-1DD
BALL BEARING 6001DDCMPS2L
1
88
939-542
RETAINING RING FOR D12 SHAFT (10 PCS.)
1
89
992-503
WASHER
3
90
330-198
SECOND GEAR
1
91
959-155
STEEL BALL D3.97 (10 PCS.)
8
92
992-916
CLUTCH PLATE
1
93
992-926
SPRING PLATE
2
94
980-877
BELLEVILLE SPRING
2
95
330-199
BUSHING
1
96
608-VVM BALL BEARING 608VVC2PS2L
2
97
330-200
GEAR COVER
1
98
994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5 X 16
6
99
330-204
CRANK COVER
1
100
324-544
FELT PACKING (B)
1
101
331-674
FELT PACKING
1
102
331-675
RUBBER SEAL
1
103
324-060
SEAL LOCK HEX. SOCKET HD. BOLT M5 X 40
4
104
330-169
CRANK CASE
1
105
331-676
SEAL PACKING
1
106
330-170
CRANK SHAFT
1
107
944-109
FEATHER KEY 3 X 3 X 8
1
108
600-2DD
BALL BEARING 6002DDCMPS2L
1
109
872-767
O-RING (S-32)
1
110
948-001
RETAINING RING FOR D32 HOLE
1
111
330-171
FIRST GEAR
1
112
330-195
SLIP CLUTCH ASS'Y
1
-4-
*ALTERNATIVE PARTS
REMARKS
INCLUD. 83, 85, 87-96
9 - 09
STANDARD ACCESSORIES ITEM NO.
CODE NO.
DH 28PC
DESCRIPTION
NO. USED
501
330-220
CASE
1
502
982-671
STOPPER ROD
1
503
330-208
SIDE HANDLE ASS'Y
1
504
330-209
SIDE HANDLE
1
505
307-947
WING BOLT M6 X 12
1
506
330-210
MOUNT
1
507
949-556
NUT M6 (10 PCS.)
1
508
330-212
BAND
1
509
330-211
BOLT HOLDER
1
510
330-213
BOLT M8 X 45
1
9 - 09
*ALTERNATIVE PARTS
REMARKS
INCLUD. 504-510
-5-
OPTIONAL ACCESSORIES ITEM NO.
CODE NO.
DH 28PC
DESCRIPTION
NO. USED
601
303-046
BULL POINT (SDS+) 250MM (ROUND SHANK TYPE)
1
602
303-044
CHEMICAL ANCHOR ADAPTER (SDS+) 12.7MM X 90L
1
603
303-045
CHEMICAL ANCHOR ADAPTER (SDS+) 19.0MM X 100L
1
604
303-334
CHUCK HANDLE
1
605
302-976
ANCHOR SETTING ADAPTER A (SDS+) W1/4 X 260L
1
606
930-515
CHUCK WRENCH 10G
1
607
302-975
ANCHOR SETTING ADAPTER A (SDS+) W5/16 X 260L
1
608
303-621
ANCHOR SETTING ADAPTER A (SDS+) W3/8 X 160L
1
609
302-974
ANCHOR SETTING ADAPTER A (SDS+) W3/8 X 260L
1
610
302-979
ANCHOR SETTING ADAPTER B (SDS+) W1/4 X 260L
1
611
302-978
ANCHOR SETTING ADAPTER B(SDS+) W5/16 X 260L
1
612
303-622
ANCHOR SETTING ADAPTER B (SDS+) W3/8 X 160L
1
613
302-977
ANCHOR SETTING ADAPTER B (SDS+) W3/8 X 260L
1
614
303-617
TAPER SHANK ADAPTER (SDS PLUS) NO.1
1
615
303-618
TAPER SHANK ADAPTER (SDS PLUS) NO.2
1
616
303-619
A-TAPER SHANK ADAPTER (SDS PLUS)
1
617
303-620
B-TAPER SHANK ADAPTER (SDS PLUS)
1
618
981-122
SPECIAL SCREW M6 X 22
1
619
303-627
CORE BIT SHANK (SDS PLUS) 45-90MM 300L
1
620
303-625
CORE BIT SHANK (SDS PLUS) 25-38MM 105L
1
621
303-626
CORE BIT SHANK (SDS PLUS) 25-38MM 300L
1
622
303-624
CHUCK ADAPTER (D) (SDS PLUS)
1
623
321-825
DRILL CHUCK AND ADAPTER SET
1
624
303-623
CHUCK ADAPTER (G) (SDS PLUS)
1
625
321-814
DRILL CHUCK 13VLRB-D
1
626
995-344
FLAT HD. SCREW (A) (LEFT HAND) M6 X 25
1
627
321-813
DRILL CHUCK 13VLD-D
1
628
980-927
GREASE FOR HAMMER. HAMMER DRILL (500G)
1
629
981-840
GREASE (A) FOR HAMMER. HAMMER DRILL (30G)
1
630
308-471
GREASE FOR HAMMER. HAMMER DRILL (70G)
1
631
971-511Z + DRIVER BIT (A) NO.2 25L
1
632
971-512Z + DRIVER BIT (A) NO.3 25L
1
633
944-477
COTTER
1
634
982-684
CENTER PIN (A) 109L FOR CORE BIT D32-38
1
635
982-685
CENTER PIN (B) 104L FOR CORE BIT D45-90
1
636
315-921
ADAPTER (A) FOR HAMMER DRILL
1
637
982-672
CORE BIT (A) 25MM
1
638
982-673
CORE BIT (A) 29MM
1
639
982-674
CORE BIT (A) 32MM
1
640
982-686
GUIDE PLATE (FOR CORE BIT 32MM)
1
641
982-675
CORE BIT (A) 35MM
1
642
982-687
GUIDE PLATE (FOR CORE BIT 35MM)
1
643
982-676
CORE BIT (A) 38MM
1
644
982-688
GUIDE PLATE (FOR CORE BIT 38MM)
1
645
982-677
CORE BIT (B) 45MM
1
646
982-689
GUIDE PLATE (FOR CORE BIT 45MM)
1
647
982-678
CORE BIT (B) 50MM
1
648
982-690
GUIDE PLATE (FOR CORE BIT 50MM)
1
649
982-679
CORE BIT (B) 65MM
1
650
982-691
GUIDE PLATE (FOR CORE BIT 65MM)
1
-6-
*ALTERNATIVE PARTS
REMARKS
INCLUD. 624, 625 INCLUD. 626
INCLUD. 640 INCLUD. 642 INCLUD. 644 INCLUD. 646 INCLUD. 648 INCLUD. 650 9 - 09
OPTIONAL ACCESSORIES ITEM NO.
CODE NO.
DH 28PC
DESCRIPTION
NO. USED
REMARKS
651
982-680
CORE BIT (B) 80MM
1
652
982-692
GUIDE PLATE (FOR CORE BIT 80MM)
1
653
971-794
ANCHOR SETTING ADAPTER A W1/4" (MANUAL)
1
654
971-795
ANCHOR SETTING ADAPTER A W5/16" (MANUAL)
1
655
971-796
ANCHOR SETTING ADAPTER A W3/8" (MANUAL)
1
656
971-797
ANCHOR SETTING ADAPTER A W1/2" (MANUAL)
1
657
971-798
ANCHOR SETTING ADAPTER A W5/8" (MANUAL)
1
658
971-799
ANCHOR SETTING ADAPTER B W1/4" (MANUAL)
1
659
971-800
ANCHOR SETTING ADAPTER B W5/16" (MANUAL)
1
660
971-801
ANCHOR SETTING ADAPTER B W3/8" (MANUAL)
1
661
971-802
ANCHOR SETTING ADAPTER B W1/2" (MANUAL)
1
662
971-803
ANCHOR SETTING ADAPTER B W5/8" (MANUAL)
1
663
944-460
TAPER SHANK DRILL BIT D11 X 100
1
664
944-461
TAPER SHANK DRILL BIT D12.3 X 110
1
665
993-038
TAPER SHANK DRILL BIT D12.7 X 110
1
666
944-462
TAPER SHANK DRILL BIT D14.3 X 110
1
667
944-500
TAPER SHANK DRILL BIT D14.5 X 110
1
668
944-463
TAPER SHANK DRILL BIT D17.5 X 120
1
669
944-464
TAPER SHANK DRILL BIT D21.5 X 140
1
670
320-859
SYRINGE (BLOW-OUT BULB TYPE)
1
671
303-571
DRILL BIT (SDS PLUS) D4.0 X 110
1
672
303-575
DRILL BIT (SDS PLUS) D5.0 X 110
1
673
303-578
DRILL BIT (SDS PLUS) D5.0 X 160
1
674
303-576
DRILL BIT (SDS PLUS) D5.5 X 110
1
675
303-581
DRILL BIT (SDS PLUS) D6.5 X 160
1
676
303-582
DRILL BIT (SDS PLUS) D7.0 X 160
1
677
303-584
DRILL BIT (SDS PLUS) D8.0 X 160
1
678
303-585
DRILL BIT (SDS PLUS) D8.5 X 160
1
679
303-586
DRILL BIT (SDS PLUS) D9.0 X 160
1
680
303-591
DRILL BIT (SDS PLUS) D12.0 X 160
1
681
303-606
DRILL BIT (SDS PLUS) D12.0 X 260
1
682
303-593
DRILL BIT (SDS PLUS) D12.7 X 160
1
683
303-595
DRILL BIT (SDS PLUS) D14.0 X 160
1
684
303-598
DRILL BIT (SDS PLUS) D15.0 X 160
1
685
303-599
DRILL BIT (SDS PLUS) D16.0 X 160
1
686
303-611
DRILL BIT (SDS PLUS) D16.0 X 260
1
687
303-601
DRILL BIT (SDS PLUS) D17.0 X 160
1
688
303-613
DRILL BIT (SDS PLUS) D19.0 X 260
1
689
303-614
DRILL BIT (SDS PLUS) D20.0 X 250
1
690
303-615
DRILL BIT (SDS PLUS) D22.0 X 250
1
691
303-616
DRILL BIT (SDS PLUS) D25.0 X 450
1
692
971-787
DUST CUP
1
693
318-085
SYRINGE (BELLOWS TYPE)
1
694
306-885
DUST COLLECTOR (B) ASS'Y
1
INCLUD. 695, 703
695
986-802
DUST COLLECTOR ASS'Y
1
INCLUD. 696-702
696
986-803
DUST COVER
1
697
986-804
SEAL COVER
1
698
948-310
RETAINING RING FOR D30 SHAFT
1
699
958-063
WASHER
1
700
959-150
STEEL BALL D6.35 (10 PCS.)
19
9 - 09
*ALTERNATIVE PARTS
INCLUD. 652
-7-
OPTIONAL ACCESSORIES ITEM NO.
CODE NO.
DH 28PC
DESCRIPTION
NO. USED
701
986-805
OUTER RACE
1
702
986-806
SOCKET
1
703
306-910
SOCKET ADAPTER (B)
1
-8-
*ALTERNATIVE PARTS
REMARKS
Printed in Japan (090907N)
9 - 09
