! WARNING
CORRECT:
Wire tips doing
the work.
CORRECT:
Wire tips doing
the work.

BM 1609929T61 07-09:BM 1609929T61 07-09 7/8/09 1:37 PM Page 15

pressure so only the tips of the wire come in contact with the work.

2.If heavier pressures are used, the wires will be overstressed, resulting in a wiping action; and if this is continued, the life of the brush will be shortened due to wire fatigue.

3.Apply the brush to the work in such a way that as much of the brush face as possible is in full contact with the work. Applying the side or edge of the brush to the work will result in wire breakage and shortened brush life.

WIRE WHEEL BRUSH

INCORRECT:

Excessive

pressure can

cause wire breakage.

WIRE CUP BRUSH

INCORRECT:

Excessive

pressure can

cause wire breakage.

Maintenance

Service

Preventive maintenance performed by unauth- orized 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

After about 300-400 hours of operation, or at every second brush change, the bearings

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.

Cleaning

!WARNING To avoid accidents always dis connect the tool from

the power supply before cleaning or performing any main tenance. The tool may 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.

Certain cleaning agents ! CAUTION 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.

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Bosch Power Tools 1974-8D, 1994-6D manual Maintenance, Service, Cleaning