Makita BFT040F Technical Information page 8

R
epair
< 8 > Disassembling motor section and gear section
( 1 ) Remove ring 38, and clutch cover from housing referring to "< 4 > Disassembling spindle (as a bit holder)
and clutch case".
( 2 ) After removing brush holder caps, carbon brushes and clutch section, separate housing L from housing R
by unscrewing 8 pcs. of pan head screw M3x20. See Fig. 33.
Compression spring 5
Clutch
section
Carbon brush
Brush holder
cap
( 3 ) Remove gear section with motor section from housing R .
( 4 ) Turn motor bracket anti-clockwise. So gear section can be separated from motor section. See Fig. 35.
Gear section
Motor section
( 5 ) Remove endbell from motor armature. And then, pull armature from yoke unit. See Fig. 36.
Carbon brush
Brush holder
cap
Fig. 33
Fig. 34
Yoke unit
Armature
End bell
<Note>
Be careful, not to be pinched your finger
between yoke unit and armature.
Because, armature is pulled toward yoke
unit by the strong magnetic force.
Housing R
Housing L
Pan head
screws M3x20
See Fig. 34.
Motor bracket
Yoke unit
Fig. 36
P 8 / 15
Plate
Lens
Gear section
Fig. 35
Armature