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Service
NO USER SERVICEABLE PARTS
INSIDE. 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.
Battery packs typically last from 500 to 1000 charges.
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.
Carbon 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
two to six 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. Disconnect battery pack from tool.
The brush cap is spring loaded by the
brush assembly.
2. Remove the brush cap on the motor using a wide flat
blade screwdriver.
3. Pull out the brush
1 (Figure 38). Repeat for the opposite
side.
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. Install new brush. The two (2) tabs on the brush terminal
2 go in the same hole the carbon part fits into.
5. Tighten the brush cap but do not overtighten.
Maintenance and
Lubrication
FIG. 38
2
1
WARNIN
G
!
CAUTION
!