Makita BTW152 Technical Information page 5

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Hammer Case Section
ASSEMBLING
1) Assemble Hammer case section
2) Engaging Armature's pinion gear with Spur gears in Hammer section, assemble motor section to
Hammer case section as illustrated to left in Fig. 3.
3) Then assemble Housing (R), Hammer case cover and Bumper to the machine by doing the reverse of
the disassembling steps. (Fig. 2)
Fig. 5
Hammer case
complete
Hammer section
Internal gear 51
O ring 40
Bearing box
complete
Hex socket 32-50
(134848-9)
Fit the stepped end of Internal gear 51
in the groove of Bearing box.
stepped end
Do not forget to set O Ring 40 in place
between Bearing box and Internal gear 51.
by piling component parts on Bearing box complete
Aligning the 4 locking grooves on the inside surface of
Hammer case complete with the four locking projections
of Internal gear 51, set Hammer case complete over
Bearing box complete.
One of the four locking grooves is positioned on the back
of the anti-rotation protrusion of Hammer case complete.
By aligning the anti-rotation protrusion with any one of
the four locking protrusions of Internal gear 51, therefore,
Internal gear 51
you can fit all the locking protrusions in the corresponding
grooves.
Bearing box
O ring 40
Fasten Hammer case complete
to Bearing box complete
by turning Hex socket 32-50
counterclockwise using 1R223
and 1R224 at the recommended
torque of 30 to 40 N.m.
as illustrated in Fig. 5.
Hammer case complete
anti-rotation
protrusion
locking groove
Internal gear 51
locking protrusion
Bearing box complete
1R223
1R224
P 5/10