Precor C944 Service Manual page 28

Replacing the Magnet
10. Remove the set screw that secures the magnet to the magnet hub. Discard the magnet.
Note:
When you position the magnet in the magnet hub, place the north pole towards the center of the
magnet hub. The north pole of the magnet should be marked with a spot of white paint. If the
magnet on the treadmill you are servicing is not marked, use either a compass or another
magnet to determine the north pole.
11. Position the new magnet in the magnet hub.
12. Tighten the set screw that secures the magnet to the magnet hub.
13. If you are replacing the revolution sensor...
THEN...
Continue with the next step.
14. Remove the screw and washer that secure the rotation sensor to the sensor bracket (see
Diagram 6.1).
15. Position the revolution sensor at its mounting location.
16. Position the screw and washer that secure the rotation sensor to the sensor bracket. Torque
the screw to 8 in-lbs.
17. If you are replacing the lift motor you removed earlier in this procedure...
THEN...
Continue with the next step.
Removing and Replacing the Rotation Sensor Bracket
18. Remove the two nuts that secure the sensor bracket to the lift motor.
19. Position the sensor bracket removed in the previous step on the lift motor.
20. Replace the two nuts that secure the sensor bracket to the lift motor.
21. Position the magnet hub on the lift motor so that it is flush with the speed sensor bracket.
22. Replace the set screw that secures the magnet hub to the lift motor.
OTHERWISE...
Skip to Step 19.
OTHERWISE...
Skip to Step 25.
C944 Treadmill
Page 28