P 8 / 13
R
epair
ASSEMBLE
Fig. 26
Fig. 28
(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 peripheries 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 M3x4 Pan head screw. It becomes easy to set gear
section in place.
Regarding two Leaf springs, install them along the space for Internal gear 69. Two Leaf springs have to be separated
from the center of the space as illustrated in Fig. 28.
(3) The rim portion of Internal gear 69 has to face Driver. Therefore, the rim portion of Internal gear 69 faces the opposite
side of DC motor and is assembled to Internal gear section as illustrated in Fig. 29.
(4) Install Anti back plate to Spur gear 7 complete. Pay attention to the direction of the tails of Anti back plate. (Fig. 30)
(5) Install the assembled parts in Housing L. (Fig. 31) Be sure to put Roller portion of Spur gear 55 complete under
the hook of Hammer.
[3] -5. Motor and Gear Section
Spur gear 55
complete
Housing L
Spur gear 7
complete
Tails of Anti back plate
Cam block section (with Push pin, Spring
pin 2-8 and Compression spring 2.4
Lock arm section
(with Pin 5 and
+ Pan head
screw M3x4)
Lock arm
Fig. 27
Spur gear
55 complete
Cam block
Pin 5
Fig. 29
Distance B
Distance A
Distance A= Distance B
Center line
Leaf spring
Leaf spring
Leaf spring
for Internal
gear 69
Rim portion
Flat washer 12
DC motor
Spur gear 7
complete
Spur gear 27:
3 pcs.
Space of Housing L for
Internal gear 69
Internal gear 69
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.
DC Motor
Plane
bearing 10
Mount Plane bearing
10 on Spur gear 55
complete. Install Plane
bearing 10 into the
hook of Spur gear 55
complete.
Fig. 30
Fig. 31
Internal gear 69
Roller portion of Spur gear
55 complete
Hook of Hammer
Spur gear 55 complete
Hook of Spur gear 55 complete
Anti back plate
Rim portion of Internal gear 69
