C954, C956 Treadmill
Page 1-48 Page 48
Procedure 6.7 - Replacing Drive Motor
1. Set the treadmill circuit breaker in the “off” position and unplug the treadmills line cord from
the AC outlet.
1. Remove the hood.
2. The drive motor and flywheel are balanced as a matched pair. Since the flywheel is
balanced to a specific motor, flywheels should not be removed and installed on a different
motor. If the drive motor is replaced, the drive motor and flywheel should be replaced as a
unit.
3. Disconnect the wires from the drive motor cooling fan. Disconnect the speed sensor
connector from the J2 connector on the lower logic PCA. Disconnect the drive motors in-line
connector located in the drive motor wires.
4. Remove the drive belt tension bolt, see Diagram 4.2. Rotate the drive motor as far as
possible toward the rear of the treadmill.
5. Remove the drive belt from the drive motor pulley.
6. Remove the four bolts that fasten the drive motor onto its mounting plate. Remove the drive
motor from the treadmill.
7. Remove the screws that mount the speed sensor and bracket onto the drive motor, see
Diagram 6.9.
8. Mount the speed sensor and bracket on the replacement drive motor using the screws
removed in step 7.
9. Remove the four screws that fasten the drive motor cooling fan onto the drive motor. See
Diagram 6.13.
10. Mount the drive motor cooling fan onto the replacement drive motor with the screws
removed in step 9.
11. Set the drive motor in its mounting position. Fasten the drive motor to its mounting plate
using the bolts removed in step 6.
12. Set the drive belt in place on the drive motor pulley.
13. Rotate the drive motor forward and replace the drive belt tension bolt removed in step 4.
Tension the drive belt per procedure 4.2.
14. Connect the brown and blue fan wires to the drive motor cooling fan. The blue and brown
wires can be connected to either terminal. Reconnect the drive motor in-line connector.
Reconnect the speed sensor to the J2 connector of the lower logic PCA.
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