Milwaukee DCM2-350C Service Bulletin
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PAGE
4939 5206 01
Special Tools
Require
Important!
Disassembly
Removing
the sleeve
Sleeve with internal thread 4931 702 227
Spanner 4931 390 249
Allen key 3/32 "
Forcing discs 4931 599 018
Before beginning the maintenance work, perform an initial check with a high voltage test according
to VDE (see chapter Electrical and Mechanical Test Instructions).
Before all repair work, pull the power plug from the socket!
1
Remove the fitting (1).
2
Remove the valve (2).
3
Loosen the Allen screw (3) with aid of the
Allen key (service tool: 49 96 0050).
4
Unscrew the sleeve (4) clockwise in direction of the marking“ OFF”.
The sleeve (4) has a left-handed
☞
thread.
→
1
2
3
49 96 0050
1
Dismantling
the sleeve
Removing the
front housing
1
Press the seal rings (2) and (4) from the
sleeve (3).
Remove the disc (1).
2
1
Remove four screws (7) with washers (8)
from the front part of the housing (2).
Pull the front part of the housing (2) from
2
the bearing end plate (1).
If necessary, loosen the front part of
☞
the housing (2) by tapping it with a
plastic hammer.
3
Remove the following parts from the front
part of the housing (2):
– yoke (3)
– washer (6)
– thrust bearing (5)
– washer (4).
Loosen two screws (A) and remove the
4
rating plate (9).
4
4
3
2
1
1
3
2
6
5
4
7 8
9
A
4
PAGE
4939 5206 01
Applicable for
machines with
separate
pinion DCM2-180C,
DCM2-250C:
Disassembling
the gear
1
Tap the front part of the housing (5) lightly
with a plastic hammer and remove the
complete shaft assemblies (2) and (D).
Remove the following parts:
– shaft (2) with
– ball bearing (1)
– key (3)
– gear (4)
– gear (G)
– thrust bearing (F)
– washer (E)
– shaft (D) with
– key (C)
– spacer (B) with gear
– thrust bearing (A)
– washer (9)
– pinion (8)
– 2 plungers (7)
– 2 pressure springs (6).
2
Press the gear (4) and the ball bearing (1)
from the shaft (2) and remove the key (3).
To press off the gear and the ball
☞
bearing, use the forcing discs
(service tool: 4931 599 018)!
2
5
2D
4
3
2
Press the pinion (8) from the shaft (D).
3
Remove the washer (9), the thrust bearing (A), and the spacer (B) with gear and
key (C).
To press off the gear and the ball
☞
bearing, use the forcing discs
(service tool: 4931 599 018)!
1
5
B
A
9
8
7
6
C
G
F
E
D
4
PAGE
4939 5206 01
Applicable for
machines with
pinion on the
shaft DCM2-350C:
Disassembling
the gear
1
Tap the front part of the housing (5) lightly
with a plastic hammer and remove the two
shaft assemblies (2) and (B):
Remove the following parts
– shaft (2) with
– ball bearing (1)
– key (3)
– gear (4)
– gear (E)
– thrust bearing (D)
– washer (C)
– shaft (B) with
– spacer (A) and gear
– thrust bearing (9)
– washer (8)
– 2 plungers (7)
– 2 pressure springs (6).
Press the gear (4) and the ball bearing (1)
2
from the shaft (2) and remove the key (3).
3
5
2B
4
3
2
1
5
B
A
9
8
7
6
E
D
C
5
PAGE
4939 5206 01
Disassembling
the spindle
1
Put the spanner (2) (service
tool: 4931 390 249) on the nut (1) as
shown in the upper illustration
(view into the front housing).
2
With inserted spanner (2), unscrew the
spindle (9) in direction of arrow with aid of
the fork wrench (A) (see lower illustration).
The spanner (2) prevents the nut (1)
☞
from rotating.
Remove the spanner (2) and the following
3
parts from the spindle:
– nut (1)
– spacer (5)
– 4 pressure springs (4)
– washer (3)
– 7 discs (8)
– spindle wheel (7)
– disc and washer (6).
4
21
1
5
4
3
8
7
6
9
A
6
7
PAGE
4939 5206 01
Removing
the spindle
1
Press out the spindle (1) through the
housing (4) by tapping the rear end of the
spindle lightly with a plastic hammer.
2
Loosen the locking ring (2) with Seeger
circlip ring special pliers.
Press out the ball bearing (3) with a suita-
3
ble mandril.
4
Extract the ball bearing (5) with an interior
extractor (6).
5
3
2
1
Detaching the
carbon brushes
and removing the
bearing end plate
1
Remove the screw (2) from both brush
covers (1). Pull off both brush covers (1)
backwards.
Remove the screw (4) from both carbon
2
brushes (3). Pull both carbon brushes (3)
from the machine sideways.
Loosen the bearing end plate (5) from the
3
gear box with aid of a screwdriver. Pull out
the bearing end plate (5) with the armature.
4
5 6
2
1
3
4
5
8
9
10
PAGE
4939 5206 01
Disassembling
the bearing
end plate
1
Expel the armature (1) from the bearing
end plate (8) by tapping the pinion on the
armature shaft lightly with a plastic hammer.
2
Expel or press the pin (9) from the trigger (A). Pull the sliding switch (2) from the
bearing end plate (8) and remove the two
gaskets (7).
Extract the needle bearing (3) as well as
3
the needle bearings (4) and (6) with the interior extractor (5).
6
1
2
3
4
5
76
8
9
A
Disassembling
the armature
Dismantling
the insulation
housing
Press off the ball bearings (1) and (3) from
1
the armature shaft ends.
2
Press off the fan (2).
Remove the air deflector ring (9).
1
Remove the screw (7) to loosen the earth-
2
ing wire.
3
Expel the insulation housing (A) with the
field by tapping the housing (3) lightly with
a plastic hammer.
4
Unhook the cable cover (4) and remove it.
Branch off four wires from the luster termi-
5
nal (8).
6
Loosen two screws (6) from the clamping
piece (5) and remove it.
Loosen two screws (1) and remove the
7
name plate (2).
8
Pull out the carbon brushes (B) on both
sides.
2
1
3
4 5 6
3
1
2
7
8
A
9
B
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