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. 8).
BRUSH
COVER
BRUSH
HOLDER
W
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.
-16-