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Changing the Motor Brushes
The motor brushes wear out over time and need to be
replaced by an authorized service center. Festool does not
condone brush replacement by the end-user.
Completion of
this procedure by an unauthorized service center will void
the tool's warranty.
The motor brushes are graphite bars that provide an
electrical connection between the motor controller and the
rotating armature. When the brushes have worn past their
useful length, spring loaded wear pins are exposed that
separate the brush from the armature contacts. This disables
the motor to prevent damage. For a shorter break-in period
without excessive arcing, new brushes have ribs that quickly
form to the curve of the armature.
Procedure
CAUTION! Make sure the power cord is unplugged
before beginning this procedure.
1. Remove the four screws that secure the access cover
to the motor, and remove the cover.
2. Lift the wire connectors off the terminals on the brushes.
3. Remove the screw that secures each brush to the motor
housing. Be careful not to drop the screws into the motor.
4. Carefully lift the brushes up to remove them.
5. Insert the new brushes into the motor, and reassemble the
saw by reversing the previous steps.
Instruction Manual 27