DM 2610934164
Maintenance
Service
!Preventive maintenance WARNING 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
Dremel Service Facility.
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 brushes be examined. Only genuine Dremel replacement brushes specially designed for your tool should be used.
BRUSH |
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DOOR | CURVED END OF | |
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| BRUSH MUST | |
BRUSH | MATCH CURVATURE | |
OF HOUSING | ||
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BRUSH
SPRING 
MAINTENANCE OF REPLACEABLE BRUSHES MODEL 398-49
The brushes should be inspected frequently when tools are used continuously. If your tool runs sporad- ically, 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.
To Remove Brush Door
Disconnect the tool from the power supply. Each brush door is held in place by a snap latch. To disengage latch, place screwdriver end of wrench (included) in slot at rear of door and pry up as shown in Figure 1. With latch disengaged, using a little force, pull up rear of door and lift away brush door and spring assembly from housing, Figure 2.
Check Both Brushes
Turn tool so the brush falls out of holder and check each brush. If the brush is less than 3,2mm long and the end surface of the brush that contacts the commutator is rough and/or pitted, they should be
FIG. 1
FIG. 2
replaced. Check both brushes. Usually the brushes will not wear out simultaneously. If one brush is worn out, replace both brushes. Make sure the brushes are installed as illustrated. The curved surface of the brush must match the curvature of the commutator.
To Replace Brush Door
Rest squared underside of brush door on the squared cavity openings. Check to be sure the spring rests on the V groove of the brush, Figure 3. Push front of door down into the slot, Figure 4, then push down and snap the rear latch into it’s slot, Figure 5.
After replacing brushes the tool should be run at no- load; place it on a clean surface and run it freely for 5
Any Questions Call
03-5415317
FIG. 3
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