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Motor brushes
during the life of your machine, you may find it
necessary to replace the motor brushes. if the
motor loses power or becomes noisy, check the
brushes and replace them if they are worn down
to
⁄
" or less.
1
4
Tools Needed
phillips screwdriver #2 ..................................... 1
acetone and Cotton rag ................................... 1
Crocus Cloth (From local auto parts store) ..... 1
brush set ........................................................... 1
To replace the brushes:
1.
disConneCt saW FroM poWer!
2.
remove the two motor cover screws and the
motor cover (figure 31).
Motor
Cover
figure 31. Motor cover.
3.
pull back the brush springs and remove both
brush assemblies (figure 32).
brush
spring
figure 32. brush removal.
Model G0692 (Mfg. 11/08 and Later)
4.
Qty
5.
6.
brush
assemblies
inspect the commutator surface (figure 33).
—if the brushes have worn deep grooves in
the commutator, we recommend replacing
the motor. typically the labor involved with
re-turning the commutator on a lathe and
then undercutting the insulator segments
exceeds the price of a new motor.
—if the commutator only has minor wear and
black-colored carbon tracking (figure 33),
use a fine crocus cloth to polish the com-
mutator where the brushes ride.
Finish the cleaning process by using ace-
tone and a cotton rag to wipe off any oils
or contaminants from the commutator. do
not use emery cloth or sandpaper to clean
the commutator or you will make it out-of-
round, which will cause the new brushes to
arc, overheat, and wear out quickly.
Commutator
figure 33. Commutator.
replace both brush assemblies, making sure
they are held in place with the spring and that
the wire is connected.
reinstall the motor cover.
-25-
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