Procedure 6.4 - Replacing The Speed Sensor - Precor 9.31 Service Manual

Procedure 6.4 - Replacing the Speed Sensor

1. Set the treadmill circuit breaker in the "off" position. Remove the AC line cord from the AC
outlet.
2. Disconnect the plug from the J3 connector on the lower PCA.
3. Rotate the flywheel so that the speed sensor is between flywheel lobes.
4. Remove the screws that fastens the speed sensor mounting bracket to the treadmill drive
motor. See Diagram 6.4.
Diagram 6.4 - Speed Sensor Mounting
Speed Sensor
Mounting Bracket
5. Remove the mounting bracket from the drive motor.
6. Remove the two screws that fasten the speed sensor to the bracket.
7. Mount the replacement speed sensor on the mounting bracket with the screws removed in
step 6. Torque the screws to 8 inch pounds.
8. Mount the bracket on the drive motor with the screws removed in step 4. Torque the
mounting screws to 25 inch pounds.
9.31, 9.33, 9.35 Treadmill
Speed Sensor
Mounting Screw
Bracket
Mounting Screw
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