Makita BTW074 Technical Information page 9

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Hammer section
DISASSEMBLING
(1) Loosen four M4x22 Pan head screws and separate Hammer case complete from Housing set.
See the drawing on the upper left in Fig. 3.
(2) Remove Hammer section from Housing set. See Fig. 15.
Fig. 15
(3) Take out Steel ball 5.6 with 1R045 as drawn in Fig. 16.
Fig. 16
1. Pull Hammer downwards using 1R045
to align the opening for Steel ball insertion
with the top of the cam grooving on Spindle,
and then remove Steel balls 5.6 from Spindle.
Steel Ball 5.6
(2pcs.)
Top of
Cam groove
on Spindle
Opening for
Steel ball
insertion
Hammer section
2. Hold Hammer section as shown below in Fig. 16R,
and then release it from 1R045.
Caution: Do not hold Hammer section as shown below
Fig. 16R
Spindle
Hammer
1R045
Handle
in Fig. 16F when releasing Hammer section
from 1R045. Failure to follow this instruction
could cause Steel balls 3.5 to fall out from it.
Fig. 16F
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