Replacement Parts

11
56
55
44
20
19
18
1
2
28
29
61
62
28
32
63
45
46
6
4
53
52
51
50
49
48
64
34
37
41
35
36
38
36
35
43
26
25
24
13
12
9
10
8
23
33
7
63
64
42
16
17
22
21
28
30
2
3
48 49 50
51 52 53
54
47
5
14
15
27
61
62
31
MILWAUKEE ELECTRIC TOOL CORPORATION
13135 W. Lisbon Road, Brookfi eld, WI 53005
Drwg. 1
0
00
EXAMPLE:
Component Parts (Small #)
Are Included When Ordering
The Assembly (Large #).
BULLETIN NO.
54-24-0680
SERVICE PARTS LIST
CATALOG NO. 5378-20
REVISED BULLETIN
SPECIFY CATALOG NO. AND SERIAL NO. WHEN ORDERING PARTS
1/2" HAMMER-DRILL
STARTING
SERIAL NO.
DATE
May 2011
WIRING INSTRUCTION
897G
SEE PAGE 3
54-24-0679
FIG. PART NO. DESCRIPTION OF PART NO. REQ.
1 05-88-1500 M6 x 27 Chuck Screw (1)
2 48-66-3280 Chuck Key (1)
3 48-66-1355 Chuck (Incl. Chuck Key) (1)
4 28-14-5382 Gearcase Assembly (Incl. Needle Bearing,
Fixed Ratchet and Shifting Assy.) (1)
5 06-81-5380 M4 x 52 ST T-20 Screw (3)
6 45-88-5381 Washer (1)
7 44-94-5380 Pin (1)
8 14-29-5378 1st and 2nd Spindle Gear Assembly (1)
9 45-88-5378 Washer (3)
10 02-80-5380 Thrust Bearing (1)
11 40-50-5380 Spring (1)
12 02-02-5380 Ball (1)
13 44-60-5381 Pin (1)
14 14-29-5379 Gear Shaft Assembly (1)
15 02-02-0165 Ball (1)
16 43-44-5381 Rubber Seal (1)
17 14-34-5382 Selector Housing Assembly (1)
18 34-80-5380 Retaining Ring (1)
19 43-44-5380 Seal (1)
20 45-88-5380 Washer (1)
21 43-44-5378 Felt Seal (1)
22 43-96-5380 Speed Selector Key (1)
23 44-66-5381 Grease Plate (1)
24 43-44-5379 Gasket (1)
25 05-88-5380 M3.5 x 12 T-10 Screw (2)
26 42-36-5378 Pinion Support (1)
27 28-14-5378 Diaphragm Assy. (Incl. Washer & Bearings) (1)
28 42-34-5380 Rubber Slug (3)
29 43-44-5377 Seal Ring (1)
30 14-34-5383 Baffl e Assembly (1)
31 16-07-5376 Service Armature Assembly (1)
32 18-07-5376 Service Field (1)
33 44-66-5378 Shifting Clip (1)
34 31-50-5378 Motor Housing (1)
35 06-81-5381 M3 x 6 Pan Hd. Phillips Screw (2)
36 44-66-5379 Brush Holder Retaining Plate (2)
37 22-22-5380 Brush Assy.-w/pop-off
(Incl. Spring & Holder) (1)
38 22-22-5381 Brush Assy.-regular (Incl. Spring & Holder) (1)
FIG. PART NO. DESCRIPTION OF PART NO. REQ.
41 23-66-5380 Switch (1)
42 14-34-5378 Rear Handle Assembly (1)
43 05-88-1200 M4 x 16 Pan Hd. T-20 Screw (7)
44 38-50-5380 Spindle Shaft (1)
45 44-76-0210 Cord Protector (1)
46 22-64-5378 Cord Set (1)
47 42-55-5378 Carrying Case (1)
48 31-05-5379 Side Handle (1)
49 45-88-5377 Washer (1)
50 14-34-5374 Side Handle Carrier Assembly (1)
51 44-94-5381 Depth Gauge (1)
52 05-81-5378 M8 x 53 Bolt (1)
53 40-50-5375 Side Handle Clamping Band (1)
54 14-34-5373 Side Handle Assembly (1)
55 02-04-5380 Ball Bearing (1)
56 44-84-5380 Rotating Ratchet (1)
61 02-04-5381 Ball Bearing (1)
62 02-04-5382 Ball Bearing (1)
63 --------------- Left Handle Halve (1)
64 --------------- Right Handle Halve (1)
12-20-5378 Service Nameplate Kit (Not Shown) (1)
48-66-4040 Chuck Key Holder (Not Shown) (1)
23-94-5381 Red Brush Leadwire Assembly (Not Shown) (1)
23-94-5379 Black Brush Leadwire Assy. (Not Shown) (1)
Apply a drop of Blue Loctite
®
thread locking adhesive to chuck
screw (1) prior to installing onto
spindle (44).
SEE REVERSE SIDE FOR
SERVICE & GREASE NOTES


= Part number change from
previous service parts list.
