3. With the guard cover 8 open, install grind- ciency of the motor, we recommend every two
ing wheel with against inner flange 11, then to six month the brushes be examined. Only
install outer flange 12 and secure with nut 13. genuine Bosch replacement brushes specially
Close guard cover and secure with wing nuts 7. designed for your tool should be used.
Bearings
Removing AccessoriesAfter about 300-400 hours of operation, or at
every second brush change, the bearings shouldRepeat steps 1, and 2 of above and remove
accessory.be replaced at a Bosch Factory Service Center.
Bearings which become noisy (due to heavy
load or very abrasive material cutting) should
be replaced at once to avoid overheating and
motor failure.
Maintenance and ServiceCleaning
WARNING! To avoid accidents, always
disconnect the tool from the power supplyWARNING! Preventive maintenance per-
formed by unauthorized personnel may result
before cleaning or performing any maintenance.in misplacing of internal wires and components
The tool may be cleaned most effectively with
compressed air. Always wear safety goggleswhich could cause serious hazard. We recom-
mend that all tool service be performed at
when cleaning tools with compressed air.Bosch Factory Service Center.
Tool LubricationVentilation openings and switch levers must be
Your Bosch tool has been properly lubricated kept clean and free of foreign matter. Do not
and is ready for use. We recommend, that the attempt to clean by inserting pointed objects
tools with gears be regreased with a special through openings.
gear lubricant at every time the brushes are
changed.
CAUTION! Certain cleaning agents and
Carbon Brushessolvents damage plastic parts. Some of these
The brushes and commutator in your Bosch are: gasoline, carbon tetrachloride, chlorinated
tool have been engineered for many hours ofcleaning solvents, ammonia and household de-
dependable service. To maintain peak effi- tergents that contain ammonia.
8
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