P
5
/1
0
R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Hammer Case Section
ASSEMBLING
1) Assemble Hammer case section
by piling component parts on Bearing box complete
as illustrated in Fig. 5.
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)
Internal gear 51
Bearing box
O ring 40
stepped end
Fig. 5
1R223
1R224
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.
Bearing box complete
Internal gear 51
Hammer case 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.
Hex socket 32-50
(134848-9)
Bearing box
complete
Hammer section
Internal gear 51
O ring 40
Hammer case
complete
Fit the stepped end of Internal gear 51
in the groove of Bearing box.
Do not forget to set O Ring 40 in place
between Bearing box and Internal gear 51.
locking groove
locking protrusion
anti-rotation
protrusion
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,
you can fit all the locking protrusions in the corresponding
grooves.