11. You can also remove the carbon brush by
removing the screw and pulling the holder out
with a pair of needle nose pliers.
12. With the carbon brush holder removed, you can
check and clean the armature commutator. The
commutator is the contact points that the carbon
brushes ride on when the motor is running.
NOTE: Each polisher has 2 carbon brushes located on opposite sides of each
other. After the replacement of the two brushes, assemble the polisher by reversing
disassembly procedure.
13. Check the carbon brush for wear. Replace if worn down to a 6.4mm.
14. Blow dust off of the spring and check for proper tension.
15. Remove the old carbon and disconnect the wire terminal wire. If the inside of the holder
is fi lled with dust, clean before installing the new carbon brush. Upon installation of
the new carbon brush, make sure the twisted wire is in the slot and behind the wire
terminals on holder as in the photo above.
Figure-36
25
Figure-37
Old Carbon Brush
worn down to a quarter
of an inch (6.4mm).
New Carbon Brush