9.17, 917si Treadmill
Page 37
Procedure 6.7 - Replacing the Drive Motor Brushes
1.
Remove the drive motor per Procedure 6.6 steps, 1-10.
2.
Remove both of the motor brush access covers.
3.
Press downward on one of the brush retainers until the hook disengages the bottom edge of
the brush holder. The spring will push the brush retainer out of the brush holder.
Diagram 6.7 - Drive Motor Brush Holder
4.
Disconnect the brush connector from the tab on the brush holder and extract the brush from
the brush holder. Note the orientation of the brush as you remove it.
5.
Observing the correct brush orientation, insert the replacement brush. If the brush is not
correctly oriented the brush will have a very small contact surface with the motor
commutator. Re-connect the brush connector on brush holder tab.
6.
Carefully re-insert the brush retainer so that the hook on the retainer hooks under the
bottom edge of the brush holder. When the retainer is inserted the coil spring on the retainer
must be pressing downward on the top surface of the brush. If the spring does not push the
brush toward the motor commutator the brush will make insufficient contact and the motor
will run poorly or not at all.
7.
Replace the opposite motor brush in the same manner as above.
Brush
Retainer
Hook
Brush
Holder
Brush
Connector
