4-2
DRIVE MOTOR
The drive motor is open loop and receives commands from the control module. The motor has a pinion gear that meshes with the camshaft gear to drive (rotate)
the camshaft.
During operation, rotation forces the motor into its mounting position and screws or bolts are not needed.
NOTE: Some units will have a shipping peg in the top motor mount. The peg can be removed and discarded. This peg is not required for motor operation.
To remove motor:
1) Disconnect power to the unit.
2) Remove cover.
3) Pull off wiring connector.
4) Grasp the motor body and rotate to the left.
5) Pull motor out.
To install motor:
1) Insert gear through hole on top plate
2) With motor ears fl at to the rear of the top plate, rotate to the right until mounting tabs are engaged in slots.
3) Reconnect wires.
NOTE: It is not necessary to pre-position the camshaft or the motor. When the controller is powered up the camshaft will be rotated to the “home” position.
OPTICAL SENSOR
The optical sensor is mounted to the top plate. The camshaft cup rotates through the sensor and the slots are detected. A signal is sent to the controller for each
slot.
IMPORTANT NOTE
Damaged sensors should be replaced. Sensors may be cleaned with compressed air or a soft brush.
To remove optical sensor:
1) Disconnect power to the unit.
2) Remove cover.
3) Remove controller.
4) From the controller side, pinch the legs of the sensor holder in the top plate.
5) Pull the holder away from the mounting surface.
6) Remove wires.
To install optical sensor:
1) Attach wires. Wires should point away from camshaft.
2) Place leading edge of sensor holder into opening.
3) Pivot holder into place. Legs should enter slots and snap in place.
IMPORTANT NOTE
The optical sensor legs are fragile and may break. If the optical sensor legs break or crack, we recommend replacement. A damaged sensor may result in
improper regeneration.
Figure 27
Figure 28
