Makita TW100D Series Technical Information page 3

R
epair
[2] DISASSEMBLY/ASSEMBLY
[3]-1. Hammer case section
DISASSEMBLING
(1) Remove Bumper from Hammer case complete. (Fig. 2)
(2) Remove two Set plates from Housings L and R as follows:
Insert a small slotted screwdriver through the punched hole of Set plate and
move Set plate in the direction of the arrow using the screwdriver. (Fig. 3)
(3) Remove six 3x6 Tapping screws and Housing R from Housing L.
(4) Remove Hammer case section and Motor section from Housing L,
and then separate Hammer case section from Motor section.
(5) Hold the flats of Hammer case complete with 1R041 in Vise as drawn in
Fig. 4, and fit Socket 27-50 into the hexagonal portion of Bearing box
complete. Turn Socket 27-50 clockwise using 1R224 and 1R223 to remove
Bearing box complete. (Fig. 4)
Hammer section, Internal gear 43 and Bearing box complete are separated
from Hammer case complete.
Fig. 2
Bumper
ASSEMBLING
(1) Put Bearing box on a workbench and pile Internal gear 53, Hammer section and Hammer case complete vertically on
Bearing box. (Fig. 5) Then fasten Bearing box to Hammer case complete by turning Socket 27-50 counterclockwise
to 25 up to 30N.m. with 1R224 and 1R223.
Note: Internal gear 43 is directional as drawn in Figs. 5 and 6. Therefore;
• fit the stepped end of the gear into the groove of Bearing box.
• fit six projections of the gear into the grooves of Hammer case complete.
Fig. 5
Groove for
receiving
Internal gear 53
(2) Engage the pinion gear of DC motor with the assembled Hammer case section.
(3) Set the assembled Hammer case section with DC motor to Housing L.
(4) Do the reverse of the disassembling step to fix Housing L to Housing R. (Fig. 3)
(5) Mount Bumper on Hammer case complete. (Fig. 2)
Fig. 3
Set plate
small slotted
(2pcs.)
screwdriver
Housing R
Hammer case complete
(including Anvil and
Ring spring 7, etc.)
Hammer section
Internal gear 43
Bearing box complete
Fig. 4
1R224
flats of
Hammer
case complete
vise
Housing L
Fig. 6
stepped end of
Internal gear 43
P 3/ 6
1R223
Socket 27-50
(134844-7)
hexagon of
Bearing box
complete
1R041
six projections of
Internal gear 43