Maintenance - Bosch GSR18V-190 Operating/Safety Instructions Manual

2610067278 03-21 GSR18V-190 20210317.qxp_GSR18V-190 3/17/21 3:40 PM Page 14
maintenance performed by un au thorized
personnel may result in misplacing of
internal wires and components which could
cause serious hazard. We recom mend that all
tool service be performed by a Bosch Factory
Service Center or Authorized Bosch Service
Station. SERVICE MEN: Disconnect tool and/or
charger from power source before servicing.
amounts of dust are generated or present, may
cause the power tool to stop working. If the tool
stops working, have it inspected by a Bosch
Factory Service Center or Authorized Bosch
Service Station.
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.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated
and is ready for use.
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. Rotate brush cap at the rear part of
housing counter-clockwise with a coin or
screwdriver and remove cap (Fig. 9).
Lift out the brushes; note which way they face,
so that the brushes can be returned to their
original position. New brushes can also be

Maintenance

Service
NO USER SERVICEABLE
PARTS INSIDE. Preventive
Operating power tool in
environments, where large
inserted turned 180º. 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.
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.
Cleaning
To
always disconnect the tool
and/or charger from the power supply
before cleaning.
Certain cleaning agents
and solvents damage
plastic parts. Some of these are: gasoline, car -
bon tetrachloride, chlorinated cleaning solvents,
ammonia and household detergents that
contain ammonia.
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.
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FIG. 9
avoid accidents,