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Service
NO USER SERVICEABLE
PARTS INSIDE, except for
the replaceable carbon brushes.
Preventive maintenance performed by
unauthorized 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.
SERVICEMEN: Disconnect tool and/or
charger from power source before servicing.
BATTERIES
Be alert for battery packs that are nearing
their end of life.
If you notice decreased tool
performance or significantly shorter running
time between charges then it is time to
replace the battery pack. Failure to do so
can cause the tool to operate improperly or
damage the charger.
Long term battery storage should be in
the discharged state.
Battery packs last
longer and re-charge better when they are
stored discharged. Remember to fully re-
charge battery packs before using after
prolonged storage.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated
and is ready for use.
D.C. MOTORS
The motor in your tool has been engineered
for many hours of dependable service. To
maintain peak efficiency of the motor, we
recommend it be examined every six months.
Only a genuine Bosch replacement motor
specially designed for your tool should be
used.
CARBON BRUSHES
The brushes and commutator in your tool have
been engineered for many hours of
dependable service.
If your tool runs sporadically, loses power,
makes unusual noises or runs at a reduced
speed, check the brushes. To continue using
the tool in this condition will permanently
damage your tool.
Check both brushes. Usually the brushes will
not wear out simultaneously. If one brush is
worn out, replace both brushes.
To check brushes: Disconnect battery pack
from tool. Remove brush cover at the rear part
of housing by loosening screws (Fig. 9).
Insert a screwdriver or similar object into the
red notch of the carbon brush and lift out the
brushes; note which way they face, so that the
brushes can be returned to their original
position. Clean the brush holder openings with
compressed air or a clean cloth and replace
the brushes and brush covers.
After replacing brushes the tool should be run
at no-load and run it freely at full speed for 2
minutes before using the tool. This will allow
the brushes to “seat” properly and will give
you more hours of life from each set of
brushes.
Only genuine Bosch replacement brushes
specially designed for your tool should be
used.
Cleaning
To avoid accidents, always
disconnect the tool and/or
charger from the power supply before
cleaning.
The tool may be cleaned most
effectively with compressed dry air.
Always
wear safety goggles when cleaning tools
with compressed air.
Ventilation openings and switch levers must
be kept clean and free of foreign matter. Do
not attempt to clean by inserting pointed
objects through opening.
Certain cleaning agents
and solvents damage
plastic parts.
Some of these are: gasoline,
carbon tetrachloride, chlorinated cleaning
solvents, ammonia and household detergents
that contain ammonia.
!
WARNING
Maintenance
FIG. 9
BRUSH
HOLDER
BRUSH
COVER
!
WARNING
!
CAUTION
BM 2610925940 6-05 6/9/05 3:21 PM Page 16