Makita BFT042F Technical Information page 3

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Bit Holder Section
DISASSEMBLING
Bit holder section can be disassembled from Spindle M
as illustrated in Fig. 2 by removing Ring spring 10
from the groove of Spindle M using 1R291 or the like.
[3] -2. Spindle Section
DISASSEMBLING
1) Disassemble Bit holder section from Spindle M. (Refer to [3] -1. Bit Holder Section.)
2) Remove Ring 38G from Clutch case by unscrewing (+) Pan head screw M4x4 (silver), then remove Clutch case cover
from Clutch case by unscrewing Pan head screw M4x8 (black).
Switch lever and Compression spring 2 can now be removed. (Fig. 3)
3) Remove Clutch case from Housing by unscrewing four M4x22 (+) Pan head screws.
Clutch section (= Clutch assembly D) can now be removed from Housing. (Fig. 4)
Note: Be careful not to lose Compression spring 5 located in Clutch section. (Fig. 5)
4) Remove Retaining ring R-21 that holds Spindle section in place on Clutch case using 1R311. (Fig. 6)
5) Remove Spindle section from Clutch case by tapping the end surface of Clutch case with plastic hammer. (Fig. 7)
Fig. 3
Ring 38G
(+) Pan head screw
M4x4 (silver)
Clutch case
Fig. 5
Compression spring 5
Clutch section
Pan head screw M4x8 (black)
Clutch case cover
Compression spring 2
Switch lever
Switch unit
Fig. 6
1R311
Fig. 2
Ring spring 10
Flat washer 11
Compression spring 13
Fig. 4
(+) Pan head screw M4x22 (4 pcs)
Clutch case
Clutch section
(= Clutch assembly D)
Fig. 7
Retaining ring R-21
Clutch case
Steel ball 3 (2 pcs)
Sleeve
groove Spindle M
Clutch case
Spindle section
P 3/13
Housing