Page 1
1-1/2" ROTARY HAMMER Model HR3850B(MJ)
06-2001
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Item Part No.
No. No. Used Description
1 212551-3 1 Needle Bearing 4516
2 267057-6 1 Flat Washer 40
3 311674-5 1 Barrel
4 213655-4 1 O Ring 56
5 212551-3 1 Needle Bearing 4516
6 253832-6 1 Flat Washer 45
7 221347-1 1 Spiral Bevel Gear 36
8 321369-2 1 Striker
9 412038-7 1 Piston Ring 34
10 412041-8 1 Inner Ring 30
11 412038-7 1 Piston Ring 34
12 341743-8 1 Inner Ring 30
13 321370-7 1 Piston
14 256029-6 1 Pin 8
15 150368-5 1 Crank Cap
16 213654-6 1 O Ring 60
17 312956-8 1 Rod
18 212108-0 1 Needle Bearing 1212
19 321726-4 1 Crank Shaft
20 254001-2 2 Woodruff Key 4
21 962203-3 1 Retaining Ring R-47
22 211324-1 1 Ball Bearing 6204LLU
(Old 211309-7 -6204)
23 213606-7 1 O Ring 48
24 157307-6 1 Crank Housing Com.
(With Item 23)
25 221689-3 1 Helical Gear 33
26 212102-2 1 Needle Bearing 1210
27 212359-5 1 Needle Bearing 2216
28 153150-1 1 Gear Com.
29 150055-6 1 Torque Limiter Com.
30 253310-6 1 Thin Washer 10
31 231430-6 1 Compression Spring 11
32 253865-1 1 Flat Washer 8
33 211034-0 1 Ball Bearing 608
34 253314-8 1 Thin Washer 15
35 421689-5 1 Seal Ring (Old 213853-0
- O Ring 100)
Item Part No.
No. No. Used Description
36 157306-8 1 Gear Housing
(With Items 37 & 62)
37 263005-3 1 Rubber Pin 6
38 961011-9 1 Stop Ring E-4
39 212011-5 1 Needle Bearing 609
40 213055-8 1 O Ring 10
41 321727-2 1 Change Shaft
42 342786-3 1 Plate
43 216002-8 1 Steel Ball 4.8
44 231317-2 1 Compression Spring 3
45 410331-3 1 Change Lever
46 941052-1 1 Flat Washer 4
47 922126-7 1 Hex Socket Head Bolt M4X16
48 942101-7 2 Spring Washer 5
49 922212-4 2 Hex Socket Head Bolt M5X12
50 152335-6 1 Cylinder Liner Com.
51
52 216004-4 3 Steel Ball 7.9
53 213428-5 1 X Ring 28
54 213411-2 1 O Ring 27
55 213411-2 1 O Ring 27
56 213604-1 1 O Ring 50
57 331301-8 1 Tool Retainer
58
59 231375-8 1 Compression Spring 15
60 265321-9 1 Hex Bolt M8X12
61 922341-3 4 Hex Socket Head Bolt M6X25
62 213459-4 1 O Ring 32
63 211109-5 1 Ball Bearing 6201
64 213160-1 1 Oil Seal 14
65 241634-2 1 Fan 94
66 514771-8 1 Armature Assy (With Items
67 681635-2 1 Insulation Washer (Old 681624-7)
68 211087-9 1 Ball Bearing 6200DDW
69 410163-8 1 Baffle Plate
*
*
1 Impact Bolt
1 Tool Holder
(With Washer)
65, 67 & 68)
(Old 211066-7 - 6200LLB)
2 Model HR3850B
Page 3
Item Part No.
No. No. Used Description
70 265347-1 2 (+) Hex Bolt M5X45
(With Washer & Bond)
71 654020-2 2 Garter Spring
72 524631-6 1 Field Assy (With Items 71 & 75)
73 213406-5 1 O Ring 30
74 953106-2 4 Rivet 0-5
75 654502-4 2 Solderless Connector P-2
76 159034-1 1 Motor Housing Com. (With
Items 73, 115 & 116)
77 643650-4 2 Brush Holder Cap 6.5-13.5
78 181048-2 2 Auto Cut-Off Carbon Brush CB-155
79 284055-5 1 Rear Cover
80 942101-7 2 Spring Washer 5
81 922222-1 2 Hex Socket Head Bolt M5X16
82 922376-4 4 Hex Socket Head Bolt M6X55
83 941151-9 4 Flat Washer 6
84 931302-2 1 Hex Nut M6
85 942151-2 1 Spring Washer 6
86 941151-9 1 Flat Washer 6
87 911243-8 2 P.H. Screw M5X25 (With Washer)
89 182077-8 1 Handle Set (With Items 107 & 108)
(Old 152330-6)
90 911129-6 1 P.H. Screw M4X16 (With Washer)
91 421265-5 1 Dust Cover
93 924321-5 1 Wing Bolt M6X18
94 261049-7 1 Rubber Washer 5.5
95 261049-7 1 Rubber Washer 5.5
96 164543-7 1 Grip Base
97 164572-0 1 Grip Holder
98
99 942151-2 2 Spring Washer 6* (Type 1)
100
101 182077-8 1 Handle Set (With Items 107 & 108)
102 321210-9 1 Handle Shaft
103 682503-2 1 Cord Guard 8-90
104 664013-1 1 Cord With Plug 2P-18-2.5
105 687002-9 1 Strain Relief
106 911133-5 2 P.H. Screw M4X18 (With Washer)
107 263002-9 1 Rubber Pin 4
108 263002-9 1 Rubber Pin 4
109 421596-2 1 Cap (Added)
111
112 942151-2 2 Spring Washer 6 * (Type 1)
113 651145-3 1 Switch AC/DC (Without Lock Button)
114 254231-5 1 Key 4
115 643653-8 2 Brush Holder 6.5-13.5
116 913206-0 2 Set Screw M5X8
117
118
119
200 652014-1 4 P.H. Screw M4X8 (With Washer)
201 652252-5 4 Clamp Washer
202 654002-4 4 Solderless Terminal 1.25-M4
*
*
*
*
*
*
2 Hex Socket Head Bolt
2 Cushion Plate
(Old 152331-4)
2 Hex Socket Head Bolt
2 Rubber Ring 9 (6mm Thick)
2 Rubber Ring 9 3mm Thick)
2 Sleeve 6
Item Part No.
No. No. Used Description
Accessories
A01 155827-4 1 Steel Carrying Case (Old
823138-2)
150589-9 1 Plastic Carrying Case (With
Item A25)
A02 765009-6 1 Blow-Out Bulb
A03 321248-4 1 Depth Gauge
A04 783202-0 1 Hex Wrench 4
A05 783203-8 1 Hex Wrench 5
A06 273472-4 1 Grip 32
A07 - - - - - 1 C.T. Hammer Bit Spline Shank
(See Catalogue for Details)
A08 752026-5B 1 Center Bit 8 (See Catalogue for
other Center Bit sizes)
A09 - - - - - 1 Core Bit (See Catalogue for Details)
A10 798138-0 1 Core Bit Adapter 25.4-320 Spline
Shank (With Items A08 & A11)
(See Catalogue for other Core Bit
Shank sizes)
A11 256815-5 1 Rod 15
A12 798146-1 1 Bull Point 19-300 Spline Shank
798147-9 1 Bull Point 19-450 Spline Shank
A13 798139-8 1 Cold Chisel 26-300 Spline Shank
798140-3 1 Cold Chisel 26-450 Spline Shank
A14 798141-1 1 Scaling Chisel 50-300 Spline Shank
A15 798142-9 1 Grooving Chisel 22-300 Spline
Shank
798143-7 1 Grooving Chisel 26-300 Spline
Shank
A16 798148-7 1 Clay Spade 105-400 Spline Shank
A17 782407-9 1 Lock Nut Wrench 35
A18 A-90582 1 Hammer Grease 30cc
(Old 181490-7)
A19 181573-3 1 Bit Grease 100g
A20 798132-2 1 Ground Rod Adaptor 20-170
Spline Shank
A21 798144-5 1 Bushing Tool 67 Spline Shank
A22 798149-5 1 Rammer 140 Spline Shank
A23 798135-6 1 Spline to A-Taper Adaptor
A24 421342-3 1 Dust Cap 5 (For Bits 7/32” ~ 9/16”)
421664-1 1 Dust Cap 9 (For Bits 15/32” ~ 5/8” &
For Shank 3/8” ~ 11/16”)
A25 416401-6 2 Latch
SEE SERVICE CHANGES
*
3 Model HR3850B
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SERVICE CHANGES
1. Change on Cushion Plate etc.
Item No. Description Type 1 # Used Type 2 # Used
98
99 Spring Washer 6 942151-2 2 - - - - - 100
111
112
117 Rubber Ring 9 (6mm thick) - - - - - - 262051-3 2
118
119
Above parts are completely interchangeable as a set.
Hex Socket Head Bolt
Cushion Plate
Hex Socket Head Bolt
Spring Washer 6
Rubber Ring 9 (3mm thick)
Sleeve 6
Serial # ~ 2853E 2854E ~
922317-0 (M6X14) 2 922316-2 (M6X14) 2
342613-4 2 343754-9 2
922317-0 (M6X14) 2 265914-2
(Old 922341-3 -
M6X25))
942151-2 2 - - - - - -
- - - - - - 262052-1 2
- - - - - - 257636-8 2
2
2. Change on Impact Bolt and Tool Holder to improve endurance, Cap has been added as dust cover.
Item No. Description Type 1 Type 2
51 Impact Bolt 322218-6 323718-9
58
126
Above parts are completely interchangeable as a set.
4 Model HR3850B
Tool Holder
Cap
Serial #
322221-7 323717-1
- - - - -
~ February 1997 Production March 1997 Production ~
421596-2
Page 5
3. Addition of Dust Cup 9.
Item No. Description
Part #
A24 Dust Cup 5 922317-0 (M6X14) For Bits 7/32” ~ 6/16” - - - - -
Dust Cup 9
942151-2 For Bits 15/32” ~ 5/8” For Shank 3/8” ~ 11/16”
5 Model HR3850B
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