Makita HM0871C Technical Information page 12

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-7 Controller
DISASSEMBLING
Controller can be removed as illustrated in Fig. 29.
Fig. 29
Disconnect
Connector
From Controller.
Disassemble Handle section
by unscrewing four 5x25
Tapping screws.
[3]-8 Armature
DISASSEMBLING
(1) Disassemble Chuck section as illustrated in Fig. 2, Fig. 3, Fig. 4. However, no need to remove Tool holder.
(2) Disassemble Housing cover as illustrated in Fig. 9.
(3) In case of HM0871C, remove Active dynamic vibration abosorber after removing Housing cover. See Fig. 10.
(4) Disconnect Carbon brush from Armature's commutator as illustrated in Fig. 30.
Fig. 30
Detach Spiral spring
from Carbon brush.
By pulling Carbon brush,
disconnect its contact with
Armature's commutator.
Note: It is not necessary to remove
Carbon brush completely from
Brush holder set.
(5) Separate Motor housing by tapping with Plastic hammer as illustrated in Fig. 31R.
Fig. 31R
Tap Motor housing at the illustrated portion with Plastic hammer.
Armature can be removed together with Crank housing from
Motor housing.
Unscrewing 4x12
Tapping screws,
remove Controller
by levering up
with two Slotted
screwdrivers.
Handle section
Disassemble Rear cover from Motor housing.
Spiral spring
Carbon brush
Carbon brush
Rear cover
4x18 Tapping screw(2pcs.)
Fig. 31F
Do not tap Motor housing at the edge portion
illustrated below.
The edge of Motor housing is so thin that it may
be broken.
P 12/ 17
Motor housing