Power Steps - Lippert - Grinding at Retract?

[pconroy328]

This is a new one on me - the steps now grind at full retract. Lippert Kwikee Steps

I've had 'em grind at full extend before. Any suggestions on where to start on a fix?

https://photos.app.goo.gl/hmapojBP98yZ3n6b9


Thanks!

[pconroy328]

Thank you MrWiz... Everything is well lubed, no binding. Motor grinds with at the same spot with no load, with steps disconnected.

It's like it doesn't know it's at the limit and keeps pulling.

I guess yanking the motor and looking for some broken teeth is next.

[MrWizard]

watched your video
That's sounds like a broken gear in the gear box that driving the arm,
Normal operation, When retracting the controller turns off the Motor when the motor current load goes up because the step is retracted and cannot move further,
But the broken gear in the output shaft is not engaging the gear on the motor shaft, , the motor keeps spinning,
The motor gear slapping against the broken teeth of the output gear