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-15-
Maintenance
Service
Preventive maintenance
performed by
unauthorized per so n nel 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 Autho rized Bosch Service Station.
Tool Lubrication
Your Bosch tool has been properly
lubricated and is ready to use. It is
recommended that tools with gears be
regreased with a special gear lubricant at
every brush change.
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 brush es be
examined. Only genuine Bosch replace ment
brushes specially designed for your tool
should be used.
Bearings
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.
Cleaning
Certain cleaning agents
and sol vents damage
plastic parts. Some of these are: gasoline,
carbon tetrachlo ride, chlo rinated cleaning
solvents, ammonia and house hold
detergents that contain ammonia.
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.
If an extension cord is
necessary, a cord with
adequate size conductors that is capable
of carrying the current necessary for your
tool must be used. This will prevent
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
higher the cord capacity.
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
Tool’s
Ampere
Rating
Cord Size in A.W.G. Wire Sizes in mm
2
Cord Length in Feet Cord Length in Meters
25 50 100 150
15 30 60 120
3-6
6-8
8-10
10-12
12-16
18
18
18
16
14
16
16
16
16
12
16
14
14
14
–
14
12
12
12
–
0.75
0.75
0.75
1.0
–
0.75
1.0
1.0
2.5
–
1.5
2.5
2.5
4.0
–
2.5
4.0
4.0
–
–
Extension Cords
To avoid accidents always dis connect the tool from the power supply
before cleaning or performing any main tenance.
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