FIG. PART NO. DESCRIPTION OF PART NO. REQ.
1 05-88-1650 M4 x 25mm Pan Hd. ST Screw T-20 (4)
2 42-62-0120 Side Handle Assembly (1)
3 14-30-0083 Gear Case Assembly (1)
3g 02-04-0620 Ball Bearing (1)
4 34-40-0180 O-Ring (1)
5 14-73-0462 Spindle Hub Assembly (1)
5d --------------- Steel Pin (1)
FIG. PART NO. DESCRIPTION OF PART NO. REQ.
5f --------------- Spring (1)
5g 44-20-0875 Guard Locking Tang (1)
5h 45-04-0031 M3 x 5mm Pan Hd. ST T-8 Screw (1)
6 05-90-0225 Spring Washer (6)
7 05-78-5316 M4 x 14mm Pan Hd. Tapt. T-20 Screw (4)
8 43-54-1200 4.5" Type 27 Guard (Standard Equip.) (1)
9 --------------- O-Ring (1)
10 --------------- Wavey Spring (1)
11 --------------- Flange with Ramps (1)
12 --------------- Retaining Ring (1)
13 43-34-0935 Inner Disc Flange (1)
15 44-40-0035 Outer Flange Nut (1)
16 49-96-7215 Spanner Wrench (1)
21 05-88-1300 M4 x 28mm Pan Hd. ST T-20 Screw (2)
22 05-88-1200 M4 x 16mm Pan Hd. ST T-20 Screw (2)
23 44-76-0095 Cord Protector (1)
24 22-64-2021 Power Cord (1)
27 23-66-0185 On-OSwitch (1)
30 --------------- Spring (1)
31 --------------- Lock Button (1)
32 22-18-2240 Carbon Brush Assembly (Set of 2) (1)
33 05-88-0030 M3 x 8.5mm Pan Hd. ST T-10 Screw (2)
34 31-50-6140 Motor Housing (1)
35 23-16-0075 Foam Block (1)
36 --------------- Handle Support, Left Handle Halve (1)
38 --------------- Handle Cover, Right Handle Halve (1)
39 18-07-0280 Field Assembly (1)
39a --------------- Field Halve (1)
6 45
46
61
39a
39b
39
40 41
42
60
36
38
66
9 10
11 12
62
5d
5f
65
4 5d
5f
47
5
30
31
64
3g 7
45
3
66
68
71
1
(4x)
2
4
5f
5d
5g
8
9
10
11
3g
6
(4x)
7(4x)
5h
12
13
15
48
47
46
45
(2x)
44d
44a
43
44c 44b 36
41
40
(2x)
30
31
32(2x)
33(2x)
35
27
53
34
38
24
23
68
21(2x)
22(2x)
6
(2x)
39a
39b
42
16
70
44a 44b
44c 44d
44
FIG. PART NO. DESCRIPTION OF PART NO. REQ.
39b --------------- Field Halve (1)
40 42-28-0085 Rubber Block (2)
41 --------------- BaeFoot (1)
42 --------------- Bae (1)
43 42-96-0405 Rubber Bearing Cap (1)
44 16-10-0850 Armature Assembly (1)
44a 02-04-2110 Ball Bearing (1)
44b 31-86-0090 Plastic Disc (1)
44c --------------- Armature (1)
44d 45-88-0406 Washer (1)
45 05-78-0105 M4 x 10mm Pan Hd. Tapt. T-20 Screw (2)
46 44-86-0155 Bearing Retainer (1)
47 --------------- Pinion (1)
48 05-55-0620 M5 Hex Nut (1)
49 12-20-6142 Service Nameplate (Not Shown) (1)
50 10-20-6142 Warning Label (Not Shown) (1)
53 05-78-0305 M3.5 x 7mm Pan Hd. Phillips Screw (2)
60 42-14-0520 BaeAssembly (1)
61 44-86-0145 Bearing Retaining Plate Assembly (1)
62 14-46-6105 Flange with Ramps Assembly (1)
64 14-46-0231 Lock Button Kit (1)
65 14-46-0241 Spring/Pin Kit (1)
66 --------------- Handle Set (1)
68 --------------- Paddle Trigger Assembly (1)
70 42-55-6148 Canvas Tool Bag (Optional) (1)
71 31-44-1026 Handle Set with Paddle Trigger Kit (1)
FIG. LUBRICATION
Use Type 'Y' Grease, No. 49-08-5270
3,5,47 When servicing the Gear Case Assembly (3), Pinion (47) or
the Spindle Hub Assembly (5):
90-95% of the old grease must be removed prior to any new
grease being added. Be sure that all gear teeth are heavily
coated when reassembling.
EXAMPLE:
Component Parts (Small #)
Are Included When Ordering
The Assembly (Large #).
0
00
Type 27
Guard is
Std. Equip.
Optional
Type 1
Guard
available.
Order No.
43-54-1210.
«
«= Part number change
from previous
service
parts list.
«
«
«
«
MILWAUKEE TOOL
l
www.milwaukeetool.com
13135 W. LISBON RD., BROOKFIELD, WI 53005
Drwg. 4
BULLETIN NO.
54-38-2302
SERVICE PARTS LIST
CATALOG NO. 6141-30
REVISED BULLETIN
SPECIFY CATALOG NO. AND SERIAL NO. WHEN ORDERING PARTS
4.5" COMPACT ANGLE GRINDER with PADDLE SWITCH w/ lock-on
SERIAL NO.
DATE
June 2025
WIRING INSTRUCTION
H38C & D
See Page 2
54-38-2301
TOP VIEW
HANDLE SUPPORT (Left Handle Halve)
Install all components and route wires here before
securing with Handle Cover.
HANDLE COVER (Right Handle Halve)
Route and trap wires as shown in the illustrations
below. Be sure to place all components firmly and
squarely in handle halve cavities. Be sure the wires
are pushed to the bottom of wire traps. Check for any
interferences prior to installing the handle cover.
Check for proper switch and lock movement before
activating the tool.
White from bottom right Field
White from top left Field
Black from Power Cord
White from Power Cord
