BM 160992A0V9_HD18-2 4/6/15 8:21 AM Page 11
Preventive maintenance
WARNING
performed by unauthorized
per so n nel may result in misplacing of
internal wires and components which
recommend that all tool service be performed
could
cause
by a Bosch Factory Service Center or Autho -
rized Bosch Service Station.
Your Bosch tool has been properly lubricated
TOOL LUBRICATION
and is ready to use. It is recommended that
tools with gears be regreased with a special
gear lubricant at every brush change.
The brushes and commutator in your tool
CARBON BRUSHES
have been engineered for many hours of
dependable service. To maintain peak
efficiency of the motor, we recommend every
two to six months the brush es be examined.
Only genuine Bosch replace ment brushes
specially designed for your tool should be
used.
After about 300-400 hours of operation, or at
BEARINGS
every second brush change, the bearings
If an extension cord is
WARNING
necessary, a cord with
adequate size conductors that is capable
tool must be used. This will prevent
of carrying the current necessary for your
excessive voltage drop, loss of power or
overheating. Grounded tools must use 3-
wire extension cords that have 3-prong plugs
and receptacles.
NOTE: The smaller the gauge number, the
heav i er the cord.
* Auxiliary handle
* Chuck key
* Depth gauge
Maintenance
Service
serious
hazard.
Accessories
should be replaced at Bosch Factory Service
Center or Au thorized Bosch Service Station.
Bearings which become noisy (due to heavy
load or very abrasive material cut ting) should
be replaced at once to avoid overheating or
motor failure.
We
WARNING
performing any main tenance. The tool may
the power supply before cleaning or
be cleaned most effectively with compressed
dry air. Always wear safety gog gles when
cleaning tools with compressed air.
Ventilation openings and switch levers must
be kept clean and free of foreign matter. Do
not at tempt to clean by inserting pointed
objects through openings.
CAUTION
plastic parts. Some of these are: gasoline,
carbon tetrachlo ride, chlo rinated cleaning
solvents, ammonia and house hold detergents
that contain ammonia.
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
Cord Size in A.W.G.
Tool's
Ampere
Cord Length in Feet
Rating
25
3-6
18
16
6-8
18
16
8-10
18
16
10-12
16
16
12-16
14
12
(*= standard equipment)
(**= optional accessories)
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Cleaning
To avoid accidents always
dis connect the tool from
Certain cleaning agents
and
sol vents
damage
Wire Sizes in mm
Cord Length in Meters
50
100 150
15
30
60
16
14
0.75 0.75 1.5
14
12
0.75 1.0 2.5
14
12
0.75 1.0 2.5
14
12
1.0 2.5 4.0
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2
120
2.5
4.0
4.0
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