Makita BL1815N Technical Information page 8

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Motor and Gear Section
ASSEMBLING
(1) Assemble Cam block section to Spur gear 55 complete. (Fig. 26) Usually, there is no need to disassemble Cam block
section for repair.
Note: Put Makita grease N No.2 to the inner and the outer surface of Internal gear 69,
the pins of Spur gear 7 complete and the teeth of Spur gear 55 complete.
(2) Mount the following parts on Housing L (Fig. 27);
Spur gear 55 complete, Cam block section, Lock arm section and two Leaf springs
Note: When disassembling Lock arm section, do not remove M3x4 Pan head screw. It becomes easy to set gear
section in place.
Regarding two Leaf springs, install them in the space for Internal gear 69 as drawn in Fig. 28.
(3) Face the rim portion of Internal gear 69 oposit side of DC motor and assemble Internal gear section (Fig. 29).
(4) Install Anti back plate to Spur gear 7 complete with the direction described in Fig. 30
and mount them in Housing L. (Fig. 31) Be sure to put Roller portion of Spur gear 55 complete under
the hook of Hammer.
Fig. 26
Cam block section (with Push pin,
Spring pin 2-8 and Compression spring 2.4
Spur gear 55
complete
Fig. 28
Lock arm section
(with Pin 5 and
M3x4 Pan head
screw )
Fig. 30
Spur gear 7
complete
Housing L
Tails of Anti back plate
Caution: If using the tool on condition that Roller portion of Spur gear 55 complete is put on the hook of Hammer
by mistake, DC motor runs without transmitting the torque to gear section.
Fig. 27
Space of Housing L for
Internal gear 69
Distance A
Distance B
Leaf spring
Center line
Leaf spring
Distance A= Distance B
Fig. 29
Internal gear 69
Leaf spring
for Internal
gear 69
Rim portion
Fig. 31
Hook of Hammer
Roller portion of
Spur gear 55 complete
Internal gear 69
DC Motor
Anti back plate
Rim portion of
Internal gear 69
Lock arm
Pin 5
Spur gear 27 (3pcs.)
Spur gear 7
complete
Spur gear 55 complete
Plane
bearing 10
P 8/ 15
Cam block
Spur gear
55 complete
Flat washer 12
DC motor
Put Plane bearing 10 on
Spur gear 55 complete.
Install Plane bearing 10
into the hook of
Spur gear 55 complete.
Hook of Spur gear 55 complete