Makita BFT040F Technical Information page 3

R
epair
< 4 > Disassembling spindle (as a bit holder) and clutch case
( 1 ) After removing bit holder section, remove ring 38 by unscrewing pan head screw M4x4, and clutch case cover
by unscrewing pan head screw M4x8. And then, remove compression spring 2 and switch lever. See Fig. 2.
( 2 ) Remove clutch case by unscrewing 4 pcs. of pan head screw M4x22. See Fig. 3.
< Note > Compression spring 5 can easily fall off clutch section. Be careful, not to lose compression spring 5
in this step.
( 3 ) Remove retaining ring R-21 from clutch case. And then, knock the edge of clutch case with plastic hammer.
So, spindle (as a bit holder) can be removed from clutch case. See Fig. 4.
( 4 ) Remove ring spring 11 from spindle. And then remove ball bearing 6801LLB on the ring spring 11 side.
See Fig. 5.
( 5 ) After removing ring 12, remove the another ball bearing 6801lLB. See Fig. 6.
Ring 38
Pan head
screw M4x4 (silver)
Clutch case
Fig. 2
Retaining ring R-21
Fig. 4
Pan head screw M4x8
(black)
Clutch case cover
Compression
spring 2
Switch lever
No.1R311
Retaining Ring Pliers
with Long Bent Nails
Spindle
Ball bearing
Ring 12 6801LLB
Pan head
screw M4x22
Clutch case
Compression
spring 5
Fig. 3
1R004
Retaining ring S plier
Ring spring 11
Fig. 5
Ring 12
Spindle
Fig. 6
P 3 / 15
Clutch section
Ball bearing 6801lLB
1R269
Bearing Extractor
Ball bearing 6801lLB