Dremel 03-5415317 manual Maintenance, Carbon Brushes

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MAINTENANCE

! WARNING Preventative maintenance performed by unautho- rized personnel may result in misplacing

of internal wires and components which could cause serious hazard. We recom- mend that all tool service be performed by a Dremel™ Service Facility.

! WARNING To avoid injury from unex- pected starting or electri- cal shock, always remove plug from wall

outlet before performing service or cleaning.

Carbon Brushes

The brushes in your tool have been engi- neered for many hours of dependable serv- ice.

To prepare the brushes for use, run the tool at full speed for 5 minutes under no load. This will properly “seat” the brushes, and extend the life of the tool.

To maintain peak efficiency of the motor, examine the brushes for wear every 40-50 hours.

! CAUTION Using the tool with worn brushes will permanently

damage the motor.

Use only original Dremel™ replacement brushes.’

Inspect the rotary tool brushes after 40-50 hours of use. If the rotary tool runs erratical- ly, loses power, or makes unusual noises check the brushes for wear and possible replacement. Remember: brushes in the rotary tool are similar to oil in a car; the more you check/service, the better the perform- ance.

Follow these steps to check/change the rotary tool brushes:

1 With the power cord unplugged, place the tool on a clean surface. Use the tool wrench as a screwdriver to remove the brush caps in a counter-clockwise direction (Figure A).

A

Removing Brush Cover

2. Remove the brushes from the tool by pulling on the spring that is attached to the carbon brush. If the brush is less than 1/8” long and the surface of the brush that touches the commutator is rough or pitted, the carbon brushes should be replaced. Be sure to check both brushes (Figure B).

B

Removing/Inspecting Brushes

3. If one brush is worn, you should replace both brushes for better performance of your rotary tool. Remove the spring from the brush, throw away the old brush and place the spring on a new brush.

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