Hammering Mechanism - Makita BTD146 Technical Information

R
epair
[3] DISASSEMBLY/ASSEMBLY

[3]-5. Hammering mechanism

DISASSEMBLING
(1) Remove Hammer section by steps drawn in Fig. 2 to Fig. 7.
(2) Press down Hammer to the full with 1R045 and then reverse the handle to align the openings in Hammer
with the top of cam groove on Spindle.
(3) Remove two Steel balls 5.6 from Spindle using Tweezers or 1R288. (Fig. 23)
(4) When Hammer is separated from Spindle, the setting posture is turned upside down from shown in Fig. 23 to Fig. 24
to prevent Steel balls 3.5 from being dropped. There are 24pcs. of Steel balls 3.5 in the groove of Hammer.
(As drawn in Fig. 25, the groove is designed to have a space equivalent to one Steel ball 3.5.)
Fig. 23
Spindle top
1R045
Top of
Cam groove
on Spindle
Opening for
Steel ball
insertion
Fig. 25
Inside view of Hammer
ASSEMBLING
Reverse the disassembling step.
Steel ball 5.6
(2pcs.)
Hammer
Spindle end
Steel ball 3.5
(24pcs.)
space equivalent to
one Steel ball 3.5
Fig. 24
Wrong
Hammer
Spindle end
P 7/ 11
Right
Spindle end
Hammer