Makita BJR181 Technical Information page 10

R
epair
[3] -6. Armature
DISASSEMBLING
1) Separate Gear housing cover complete from Gear housing complete. (fFig. 13 to Fig. 16)
2) Remove Carbon brushes. Then separate the assembly of Armature and Gear housing complete from Motor housing
complete by unscrewing four 5x25 tapping screws. (Fig. 25)
Fig. 25
Tapping screw 5x25
(4pcs)
3) Remove two M5x16 Pan head screws that fasten Bearing retainer 63 to Gear housing complete.
The assembly of Armature and Bearing retainer 63 can now be removed from Gear housing complete by tapping the end
surface of Gear housing complete. (Fig. 26)
4) Remove Retaining ring S-12 using Retaining ring S and R pliers (No.1R291), then Ball bearing 6001DDW using Bearing
extractor (No.1R269). Bearing retainer 63 can now be removed. (Fig. 27)
Fig. 26
Pan head screw M5x16
Armature
Bearing
retainer 63
ASSEMBLING
Do the reverse of the disassembling steps.
Note: Make sure that Stop ring E-10 is assembled in place on Armature shaft
to secure Ball bearing 6001DDW. (Fig. 28)
Gear housing complete
Armature
Motor housing complete
Brush holder cap (2pcs)
Fig. 27
Retaining ring
Fig. 28
Carbon brush (2pcs)
Ball bearing
6001DDW
S-12
Stop ring E-10
P 10 /14
Bearing
retainer 63