Power Steps - Lippert - Grinding at Retract?

MrWizard wrote:
I think he means look to verify broken or not,
Motors are available
Gear boxes are available
Replacing old motor with a new replacement version can also mean modifying the wiring, the last motor i replaced did not have the same connections as the one i removed, replacing the controller usually requires replacing the door sensor switch, because the controller circuit has changed to sense a different switch connection,
One is a switch that closes AKA when the magnet is near, one is switch that opens when the magnet is near, I'm not sure which one is the old design and new design,
I think closed when magenta is near AKA normally open switch is the old style, but i can't swear to that,
Anyway the controller is not the OP's problem

Yessir - you are correct. Another person told me the controller uses Current Sensing to determine when the motor has reached it's limit/end stop. So broken or worn teeth might be the issue.

It's a nice day today so I'll ruin it by crawling underneath the beast and yanking stuff off. :)

The entire situation can be summed up in one word.

LIPPERT!


Good luck.

I think he means look to verify broken or not,
Motors are available
Gear boxes are available
Replacing old motor with a new replacement version can also mean modifying the wiring, the last motor i replaced did not have the same connections as the one i removed, replacing the controller usually requires replacing the door sensor switch, because the controller circuit has changed to sense a different switch connection,
One is a switch that closes AKA when the magnet is near, one is switch that opens when the magnet is near, I'm not sure which one is the old design and new design,
I think closed when magenta is near AKA normally open switch is the old style, but i can't swear to that,
Anyway the controller is not the OP's problem

pconroy328 wrote:
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.

Don't bother looking for broken teeth. Even if you have/find them, (for most people) the gears they attach to aren't individually readily available in the aftermarket. Most likely, you'll be needing a motor/gearbox/controller upgrade/update which is readily available. You can buy a new motor, a new gearbox, or, a new controller, or an upgrade kit containing all three. Google is your friend. You'll need the year, the step series, and possibly the chassis which these Kwikee step upgrades will be attached to get the right parts.

Chum lee

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.

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