CORRECTIVE MAINTENANCE
Sammons Preston CPM Unit
Motor and Gearbox Assembly Replacement Procedure
1. Turn off the power and unplug the CPM unit.
2. Remove the control box cover with a Phillips head screwdriver.
3. Using a 2.5mm allen wrench, loosen and remove the two motor bracket allen screws.
( Note: Do NOT remove the two hex bolts. )
4. Detach the motor/gearbox assembly from the circuit board.
5. Gently pull the motor/gearbox assembly so that the coupling disengages from the rubber coupler.
6. Loosen the coupling set screw to remove the coupling from the gearbox shaft.
7. Install coupling onto new motor/gearbox assembly. Tighten set screw.
8. Engage the motor/gearbox assembly to the rubber coupler.
9. Reinstall 2.5mm allen screws and tighten motor into bracket.
10. Reconnect motor to circuit board.
11. Reinstall control box cover.
Bracket allen screws
Motor/Gearbox Assembly
Rubber Coupler
Disconnect from here
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