Makita BTM40 Technical Information page 4

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. DC Motor
DISASSEMBLING
(3) Disassemble DC Motor as described in Fig. 4.
Fig. 4
1. Remove DC motor section from Motor housing by gently tapping
the end surface of Motor housing.
ASSEMBLING
Assemble DC motor section by reversing the disassembly procedure.
See Fig. 5 for Noets in Assembly.
Fig. 5
Noets in Assembly
When mounting Housing cover
on DC motor, align the pin of
Housing cover with the slit of
DC motor.
pin
slit
Before assembling Crank housing complete
and Motor housing together, make sure that
O ring 8 is mounted in place on Crank shaft.
Note: If Cap remains in
Motor housing, pull it out
with pliers.
If you reuse the removed M4x12
Pan head screws, apply either of
the following two thread lockers
to the threads of the screws:
• ThreeBond 1342
• Loctite 242
When assembling Crank housing complete and Motor housing together,
engage Crank shaft with the coupling portion of Motor shaft.
Crank shaft
O ring 8
Motor shaft
2. Remove Housing cover from DC motor
by removing two M4x12 Pan head screws.
M4x12 Pan head screw*
(2 pcs.)
*Thread locking type
Housing cover
DC motor
Cap
Before mounting Crank housing complete
on Motor housing, make sure that Crank
housing caps A and B are mounted in place
on Crank housing complete.
Crank housing complete
Crank housing cap B
Crank housing cap A
P 4/10