Makita TD090D Technical Information page 4

R
epair
[3]-2. Hammer section
DISASSEMBLING
1) Remove Hammer section in accordance with [3]-1. Hammer case section.
2) Press down Hammer using 1R045 and 1R346 to align the opening for Steel ball insertion with the top of cam grooving
on Spindle. And then, remove Steel ball 4.8 from Spindle. (Fig. 7)
3) Hold Hammer section as illustrated in Fig. 8 and release it from 1R346 and 1R045.
Note: Do not hold 1R346 and 1R045 as illustrated in Fig. 9 when releasing Hammer section from them.
Failure to follow this instruction could cause Steel balls to get out of hammer.
4) Hammer section can be disassembled as illustrated in Fig. 10. Flat washer 20 and Steel balls 3 can be removed. (Fig. 11)
Fig. 7
Steel ball 4.8 (2pcs.)
opening for Steel ball insertion
Fig. 10
Spindle section
Washer 21
Compression spring 21
Hammer
ASSEMBLING
Take the reverse of the disassembling step.
Note: Put Steel ball 3 (24pcs.) into Hammer as illustrated in Fig. 12.
Space equivalent to one Steel ball proves Hammer and Steel ball 3
(24pcs.) are normal.
[3]-3. Assembling F/R Change Lever
Link the notch of F/R change lever and the protrusion of Switch,
then install them in Housing L. (Fig. 13)
Spindle
top of cam
grooving
Hammer
1R045
1R346
Flat washer 12
Pin 3.5
Spindle Spur gear 17
Fig. 13
notch of F/R change lever
Fig. 8
Fig. 11
Hammer
Steel ball 3
(24 pcs.)
Fig. 12
Hammer viewed from Spindle insertion side
protrusion of Switch
P 4/ 6
Fig. 9
Flat washer 20
Steel ball 3 (24pcs.)
Space equivalent to
one Steel ball