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Old 09-23-2017, 01:10 AM   #10
RVCampingNut
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Brand: Thor Motor Coach
Model: Challenger 37LX
State: Maryland
Posts: 109
THOR #3920
Ok, so I checked out as much as I could and then decided to call Lippert. I explained what happened and how my son's shoe was left on the steps as they tried to retract them. The first thought was that the motor stripped a gear inside (which it apparently did). I did everything they told me, disconnect the motor, open and close the door 5-10 times which should reset the controller. hooked up the motor again and the steps came down. First thought was "Hell Yeah, they work" (short lived). I closed the door and the steps made it about 85% up and then what sounded like a grinding sound. It eventually stopped.

I took the pin out from the steps and opened/closed the door several times, the motor ran all the way in and out like it should. I hand held it by the bracket and it made the same grinding sound with little effort from me. I hooked the steps back up and they only went about 85% in, but with the help of my foot, they went all the way up. Seems like the weight of the steps is now too much for the motor.

So now I have a new motor on order which should be a quick replacement job. Three bolts, connect the wire and it should be done.
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2017 Thor Challenger 37LX, Westward interior, Riverside paint job. Upgraded to 4 battery setup, Splendide 2100XC Washer/Dryer combo, Progressive Industries HW50 EMS, Heavy Duty Steering stabilizer, and TST TPMS 6+4 setup for tow vehicle . Member FMCA

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