BearingsMaintenance and Service
After about 300-400 hours of operation, or at
every second brush change, the bearings should
be replaced at a Bosch Factory Service Center.WARNING! Preventive maintenance per-
Bearings which become noisy (due to heavyformed by unauthorized personnel may result
load or very abrasive material cutting) shouldin misplacing of internal wires and components
be replaced at once to avoid overheating andwhich could cause serious hazard. We recom-
motor failure.mend that all tool service be performed at a
CleaningBosch Factory Service Center.
WARNING! To avoid accidents, always
disconnect the tool from the power supplyTool Lubrication
before cleaning or performing any maintenance.Your Bosch tool has been properly lubricated
The tool may be cleaned most effectively withand is ready for use. We recommend, that tools
compressed air. Always wear safety goggleswith gears be regreased with a special gear
lubricant every time the brushes are changed.
when cleaning tools with compressed air.
Carbon Brushes
Ventilation openings and switch levers must beThe brushes and commutator in your Bosch
kept clean and free of foreign matter. Do nottool have been engineered for many hours of
attempt to clean by inserting pointed objectsdependable service. To maintain peak effi-
through openings.ciency of the motor, we recommend that every
two to six months the brushes be examined.
CAUTION! Certain cleaning agents andOnly genuine Bosch replacement brushes spe-
solvents damage plastic parts. Some of thesecially designed for your tool should be used.
are: gasoline, carbon tetrachloride, chlorinated
cleaning solvents, ammonia and household
detergents that contain ammonia.
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ACEC
BOSCH
