Quinton TM55, Service Manual

Page: 34 / 82

4-10 Repair/Replacement and Calibration Cardiac Stress Treadmills Service Manual
6. Pull the motor off the headframe.
7. Loosen the two setscrews on the flywheel/drive pulley and remove.
Use a gear puller to pull the flywheel off the motor shaft.
8. Reinstall the flywheel onto the motor shaft and loosely tighten the
setscrews.
9. Replace the motor following steps 3 through 5 in reverse order.
♦
The new motor and flywheel assembly must be aligned with the front roller
drive pulley. Use a straight-edge ruler placed on the outside of the front
roller drive pulley to align the outside face of the motor drive pulley to within
0.020 inch. Tighten the setscrews.
10. Replace the poly drive V-belt as previously described on page 4-8.
11. If no other service is required, replace the treadmill hood as described
in step 9 on page 4-3.
Replacing the Transformer
1. Remove the treadmill hood and power as described in “Removing the
Treadmill Hood” on page 4-3.
2. Unplug the transformer wires from the configuration plate PCBA
board. Note the wire colors and connection points. Cut the plastic
cable ties that secure the transformer wiring.
3. Remove the four Phillips-head screws that hold the transformer to the
headframe.
Tensioner
Setscrew
1/4-20 x 0.25L
Drive Motor
Flywheel