Assembling - Makita BTD140 Technical Information

R
epair
[3] -1. Disassembling/Assembling Hammering Mechanism (cont.)

ASSEMBLING

Do the reverse of assembling steps.
Note:
1) Assemble by piling component parts on Bearing box as illustrated in Fig. 10.
2) Make sure that twenty-six 3.5 Steel balls are in place inside Hammer.
3) Do not forget to install O ring 40 when assembling Internal gear 51 to Bearing box. (Fig. 11)
4) Internal gear 51 is not reversible when assembled to Bearing box. Be sure to assemble so that the stepped end of
the gear face Bearing box. (Fig. 11)
5) Assemble Hammer case complete to Bearing box as illustrated in Fig. 12.
Fig. 10
Fig. 12
Fit Hammer case complete over Internal gear 51 with
the four grooves on the inside of Hammer case complete
aligned with the corresponding projections on Internal gear 51.
Bearing box
Socket 32-50 for fixing Bearing box
Hammer case
Hammering mechanism
Internal gear 51
O ring 40
Bearing box
Hammer case complete
four grooves on
the inside surface
Internal gear 51
four projections
Fig. 11
stepped end
O ring 40
Then, using No.1R224 and No.1R223,
fasten Hammer case complete to
Bearing box by turning counterclockwise
to the recommended torque of 30 - 40 N.m.
P 5 / 9
Internal gear 51
Bearing box