Maintenance And Lubrication; Motor Brushes - Bosch CM8S Operating/Safety Instructions Manual

BM 2610025580 05-13_BM CM8S 5/17/13 1:37 PM Page 41
WARNING
personnel may result in misplacing of internal
wires and components which could cause
serious hazard. We recommend that all tool
service be performed by a Bosch factory Service
Center or Authorized Bosch Service Station.

Motor Brushes

The brushes and commutator in your tool have been
engineered for many hours of dependable service. To
maintain peak efficiency of the motor, we recommend
every 2-6 months the brushes be examined. Only
genuine Bosch replacement brushes specially
designed for your tool should be used.
Motor Brush Replacement
To inspect or replace brushes:
1. Unplug the saw.
2. Loosen motor endcap screws, and remove motor
endcap.
3. Remove brush from brush holder by pulling back
tension spring, then pull the brush out using the
conecting wire, then unplug the terminal wire,
figure 54.
NOTE: If installing the existing brush or brushes,
make sure the brush goes in the same way it came
out. Otherwise, a break-in period will occur that will
reduce motor performance and increase brush wear.
4. To reinstall new brushes follow steps in reverse.

Maintenance and lubrication

Service
preventive maintenance
performed by unauthorized
FIG. 54
Tension
Spring
Motor
Brush
Terminal
41.