SERVICE PARTS LIST - Milwaukee Electric Tool

BULLETIN NO.
SERVICE PARTS LIST
54-26-2712
REVISED BULLETIN
54-26-2711
SPECIFY CATALOG NO. AND SERIAL NO. WHEN ORDERING PARTS
18 Volt 1/2" Square Impact Driver
CATALOG NO.
#77 Two styles of Brush Card
Assemblies See Page Two
Soldered
STARTING
SERIAL NO.
2652-20
WIRING INSTRUCTION
B78C
SEE PAGE 3
= Part number change
from previous service
parts list.
Screwed
59
00
6
DATE
Aug. 2014
EXAMPLE:
0 Component Parts (Small #)
Are Included When Ordering
The Assembly (Large #).
4
72
73
55
L
1
77 15
76
3
75
56
73
76 72
74 75
2
3
74
21 22 23 24 25 26
19 20
27 28 29 30 31 32 33
5
13
23
2 3 6 9 10
70 13
15 18 55 76
15
24
16
25
10
26
27
17
28
20
29
71 27
33
9 10 13
11 15
18 76
60
21
30
22
31
7
18
32
9
8
33
57
2
48
80 81
82
37
36
65
37 48
65
42
82
43
47
67
FIG.
 1
2
3
4
5
6
7
8
9
 10
 11
 13
 15
16
17
 18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
36
PART NO.
31-44-2435
----------------------------42-52-0062
45-24-0300
45-30-0250
42-70-5150
40-50-1090
--------------23-66-2830
23-66-1238
----------------------------16-01-3010
18-01-3010
--------------14-30-0920
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------42-06-0650
DESCRIPTION OF PART
NO. REQ.
Handle Assembly
(1)
Left Handle Half
(1)
Right Handle Half
(1)
End Cap
(1)
Forward / Reverse Shuttle
(1)
Rubber Slug
(8)
Belt Hook
(1)
Spring
(1)
Contact Block
(1)
Switch
(1)
Switch/Brush Card Assembly
(1)
LED Assembly
(1)
Brush Card
(1)
Service Armature Assembly
(1)
Service Field
(1)
PCB Assembly
(1)
Gear Box Assembly
(1)
Rear Case
(1)
Ring Gear
(1)
Retaining Ring
(1)
Ball Bearing
(1)
Washer
(1)
Pin
(2)
Planet Gear
(2)
Cam Shaft
(1)
3/16" Steel Ball
(2)
Washer
(1)
Compression Spring
(1)
Washer
(1)
3.0mm Steel Ball
(30)
Hammer
(1)
1/2" Square Drive Anvil Assy. w/ Bearing (1)
81
There are
2 belt clip
designs for
this tool. Belt Clip #7,
42-70-5150 is discontinued and replaced
by Belt Clip Assembly
42-70-2653 (#80).
Place Rubber Slugs (6)
as shown, four in each
handle half (2,3).
FIG.
37
42
43
47
48
55
56
57
59
60
65
67
 70
 71
72
73
74
75
76
77
80
81
82
PART NO.
40-50-8320
45-88-2025
28-50-0900
06-82-7010
44-60-1170
06-82-6350
06-82-7336
06-82-5275
12-20-2650
10-20-2695
02-02-1300
42-55-2650
23-66-1239
14-46-1710
05-88-0928
45-88-1980
----------------------------14-46-2395
14-46-2024
42-70-2653
-----------------------------
DESCRIPTION OF PART
NO. REQ.
Detent Spring
(1)
Front Washer
(1)
Front Case Sub-Assembly w/ Bushing (1)
8-18 x 24 Pan Hd. Screw
(4)
Detent Pin
(1)
M3 Pan Hd. T-10 Screw
(7)
M3 Pan Hd. T-10 Screw
(4)
6-32 x 5/16" Slt. Pan Hd. T-15 Screw (1)
Service Nameplate Kit
(1)
Warning Label
(1)
5mm Steel Ball
(1)
Carrying Case
(1)
Switch and Housing Kit
(1)
Cam Shaft/Hammer Kit
(1)
M3 x 5mmPan Hd. T10 Screw
(2)
Spring Washer
(2)
Leadwire Assembly - Red
(1)
Leadwire Assembly - Black
(1)
Leadwire/Screw/Washer Kit
(1)
Brush Card Assembly
(1)
Belt Clip Assembly
(1)
Belt Clip
(1)
Belt Clip Screw
(1)
MILWAUKEE ELECTRIC TOOL CORPORATION
13135 W. Lisbon Road, Brookfield, WI 53005
Drwg. 2
SolderedOriginal design
ScrewedNew design
NOTE:
There are two Brush Card Assembly designs.
On the original brush card design the red and black wires
that go to the switch are soldered on the brush card.
On the new brush card design the red and black wires
that go to the switch are secured to the brush card with
spring washers and screws.
The new brush card design is directly interchangeable
in tools that have the old brush card design.
L
Back View
Brush Card Assemblies
NOTE:
As an aid to prevent damage to the armature
commutator or the brushes when removing and
installing the armature assembly, it is recommended to
pull the carbon brushes partially back into the brush
tube. The carbon brushes will be held in place with the
brush spring moving from the rear of the brush to the
side of the brush.
Black
Red
In the unlikely event that the spring pops off follow the
instructions below.
Brush Card Assy.
Brush Shunt (4 places)
Right Brush Spring (2x)
Wrong
Carbon Brush (4x)
Left Brush Spring (2x)
Be sure carbon
brush is in brush tube
with brush shunt moving
freely in side groove of tube.
Place brush spring over post with short leg
positioned downward as shown. Be sure spring
is completely down with short leg trapped against
'Y' shaped wall on brush card.
Correct
While holding spring in place, bring the long leg of
spring over the brush tube and through rear opening
of tube. Position rounded hook of spring in groove on
back of carbon brush. Be sure to check for free movement between carbon brush, brush shunt and brush spring.
FIG.
NOTES:
15,16,17 See service note and illustration on the back of bulletin to aid
with the removal and installation of the the Brush Card (15),
Armature (16) and Field (17).
17
Field (17) to be positioned with side cut-outs to the front.
20,21
Position Ring Gear (21) with three lugs face down to interlock
in the bottom of Rear Case (20).
20,43
Be sure to match the raised contours on the bottom of Rear
Case (20) with raised contour on bottom of Front Case (43)
when assembling.
29,30
Make sure concave side of Washer (29) faces Spring (30).
42,43
Tappered end of Front Washer (42) to face Front Case (43).
Short leg
of spring to
the bottom
FIG.
LUBRICATION
(Type 'J' Grease, No. 49-08-4220):
21,26
Lightly coat I.D. of the Ring Gear (21) and center of the two
Planet Gears (26) with grease.
27
Place a dab of grease in the ball grooves of the Cam
Shaft (27).
36,37
Lightly coat front washer surface of Anvil (36) with grease,
place a dab in the Ball holes of Anvil and in Needle Bearing
inside the Anvil.
43
Coat inside grooves of Bushing (inside of 43) with grease.
NOTE: Before attempting to remove armature or brush card assemblyPull brush back until the brush spring slides from the back of the brush, onto the
side of the brush as shown. (Do this to all four brushes). This will hold brushes
out of the way for ease of servicing and will help prevent damage to the carbon
brushes and the commutator of the armature.
SHUNT
CARBON
BRUSH
To reinstall components, orient the Field with the cut-outs facing forward, place
the Armature into the Field prior to assembling onto the Brush Card Assembly.
Make sure that all brushes are returned to the proper position once Brush Card,
Armature and Field are properly seated in the Left Handle Half.
BRUSH
SPRING
WIRE
TRAP
WIRE
TRAP
1
2
BRUSH CARD ASSEMBLY
(BACK VIEW)
Be sure to place black wire #1 and red wire #2
firmly in the wire traps on the bottom of brush
card to prevent pinching between handle halves
and end cap.
Model 2650-20 shown
13
14
1
BRUSH CARD
ASSEMBLY
2
2
Red
Sleeve
13
14
= WIRE TRAPS
or GUIDES
1 Black
LED
SWITCH
Orange 6
6
7
9
White 8
8
Sleeve
5
Brown 5
9 Brown
7 Green
3
10
14
11
12
4
PCBA
3 Red
14 Yellow
13
14
Black 4
13 Blue
12 Red
TERMINAL
BLOCK
ASSEMBLY
WIRING SPECIFICATIONS
Wire
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Wire
Color
Black
Red
Red
Black
Brown
Orange
Green
White
Brown
Black
Blue
Red
Blue
Yellow
Origin or
Gauge
---------------------------------------------------------
Length
---------------------------------------------------------
Terminals, Connectors and 1 or 2 End Wire Preparation
Component of Brush Card Assy. Connect to M2 on Switch.
Component of Brush Card Assy. Connect to M1 on Switch.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assembly.
Component of Switch/Brush Card/Terminal Block Assy. (LED)
Component of Switch/Brush Card/Terminal Block Assy. (LED)
11 Blue
10 Black
AS AN AID TO REASSEMBLY, TAKE
NOTICE OF WIRE ROUTING AND
POSITION IN WIRE GUIDES AND
TRAPS WHILE DISMANTLING TOOL.
BE CAREFUL AND AVOID PINCHING
WIRES BETWEEN HANDLE HALVES
WHEN ASSEMBLING.