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Old 10-04-2019, 01:33 PM   #1
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Kwikee 32 series

I just changed the door switch , it was fine .
Now it open and close but it seem like the motor continues pushing for three or 4 seconds ...making a tac tac tac noise ...
Would it be the sensor is not really well aligned with the magnet on the door?
thanks in advance .....
The motor , gears and controller are new .....
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Old 10-05-2019, 12:38 PM   #2
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I had a similar problem at one time.There was a mechanism to tell it when the steps were in. I am sorry but I don't remember but I think it was on the step mechanism and made contact at full close. Look around under the step and follow any wires.
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Old 10-05-2019, 01:12 PM   #3
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Mine made the same noise when it came in, replaced motor, computer, pull the gear box down and open it up and I bet you will find chipped off gear teeth. That was my problem.

Time for a new gear box.
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Old 10-05-2019, 06:59 PM   #4
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I think you'll find a damaged gear or possibly the three 'buttons' that actually drive the gear are disintegrating. The motor is instructed to shut off when a certain torque value is met, as judged by the microprocessor control unit. As the gear or buttons are getting broken up the motor will just grind until a big enough piece or gear tooth comes into play. Sounds horrible but it's an easy fix. You can remove the motor/gear assembly and get it matched at an auto parts store. The typical installation uses an automotive power window motor, usually Ford. A good parts man will be your very best friend.
Just be very careful to disconnect the power to the steps before you get your hands up in there.
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Old 10-05-2019, 07:09 PM   #5
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Like a crunching sound ?
Pull the Motor and disassemble- There is a Plastic gear in there that wear's out - Available at NAPA or O'Reilly -- Like 10 Bucs.
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Old 10-05-2019, 08:04 PM   #6
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In the motor gear assembly are 3 plastic cushions (buttons) that couple 2 gears together.
They have flattened out and slip when the stairs reach the end of travel. The controller does not see the necessary current rise to shut the motor off when the cushions slip.
The following link shows the cushings.

https://www.oreillyauto.com/detail/b...ushings&pos=25

See cushions installed.

https://www.ebay.com/itm/71-93-FORD-...DOPmQrJuxqTDKg
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Old 10-18-2019, 11:53 AM   #7
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I just check the motor and the 3 bushing were worn ..... replace then=m and now the step is ok ...thanks for all replies ......
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Old 10-18-2019, 07:29 PM   #8
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Quote:
Originally Posted by mrwrench View Post
I just check the motor and the 3 bushing were worn ..... replace then=m and now the step is ok ...thanks for all replies ......
Good News ! Nice Job !!
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Old 10-18-2019, 11:00 PM   #9
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Quote:
Originally Posted by mrwrench View Post
I just check the motor and the 3 bushing were worn ..... replace then=m and now the step is ok ...thanks for all replies ......
FWIW, there is no stop switch, the motor controller senses increased amperage draw and disconnects 12VDC electricity. Exactly like an auto electric window motor, in fact an older Ford electric window motor is a replacement option.
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