Makita BKP140 Technical Information page 4

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-2. Motor section
DISASSEMBLING
(1) Remove Poly V-belt 4-241. (Refer to Fig. 2)
(2) Separate Bracket section from Main frame complete. (Fig. 5)
Fig. 5
1. Remove Carbon brushes.
Carbon brush
Carbon brush
(3) Disassemble Armature from Bracket. And remove Ball bearings. (Fig. 6)
Fig. 6
4. Set Phillips bit and Bit adapter
(P/N:A-33750 or P/N:134873-0)
to Impact driver for removing
V-pulley.
5. Hold Armature by gloved hand,
engage 12.7mm Square side to
Square portion of V-pulley 4-24L
and Remove V-pulley by turning
clockwise.
V-pulley 4-24L
Armature
2. Remove four 4x18 Tapping screws.
4x18 Tapping screw
(4 pcs.)
Impact
driver
6. Remove Armature from Bracket
by tapping Armature shaft with
Plastic hammer.
Armature
3. Remove Bracket by tapping Main frame
complete with Plastic hammer. Armature
and Drum complete come with Bracket.
Main frame
complete
Caution: Do not pinch your finger in this step.
Armature tends to be strongly pulled
back into Main frame complete due to
the strong magnet force toward Yoke unit.
Bit adapter
Phillips bit
(P/N:A-33750 or P/N:134873-0)
P 4/ 10
Bracket
12.7mm
Square side
7. Remove Ball bearings
of both side of Armature
with 1R269.
Ball bearings