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Omnistep electric step repair

Home › Forums › Members forum › Technical › Omnistep electric step repair

  • This topic has 0 replies, 1 voice, and was last updated 3 years, 9 months ago by David Lawson.
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  • April 20, 2017 at 12:25 am #3511
    David Lawson
    Participant

    Following a recent request for advice from a member regarding an electrical problem with an Omnistor electric step I feel confident in offering the advice below.

    He had already removed the step and separated the motor. His suspicion was that the motor was burnt out, possibly as a result of the step being jammed sometime earlier. After removing the screws securing the body of the motor, this was confirmed to be the case.

    He had already done some research and found that a replacement Omnistep motor was available from numerous suppliers but the cost was easily £100 plus vat and delivery. He also correctly suspected that it looked suspiciously like a car window motor but was unsure of the different model numbers on offer.
    It was found that there can be differences in the body of the motor, some with three screws and some with four. The one we required needed four screws. The majority are originally manufactured by Bosch as is the genuine step motor.

    I decided to take the plunge and ordered a second hand car window motor which was advertised on eBay as removed from a 2005 Ford Fiesta complete with window mechanism gearbox at a cost of £14.63 including delivery. This particular one was chosen because it was depicted with a short length of two core cable, exiting from the Ford type plug and socket arrangement. It was also chosen because it was advertised as being from a rear door which you would assume has had much less use than a front door. There are loads on eBay from as little as £6.95. Have a look at this link for future reference.
    http://www.ebay.co.uk/itm/FORD-FIESTA-MK6-P-S-FRONT-WINDOW-MOTOR-5-DOOR-MODELFREEPOSTAGE-FREEPOSTAGE-/272623892012?hash=item3f79a6762c:g:nAwAAOSwRgJXj1t7
    Incidentally, it does not matter if it is from a nearside passenger door or an offside driver’s door, front or rear.

    The parcel arrived the next day and after removing the motor from the Fiesta window gearbox it was found to fit perfectly onto the Omnistep gearbox. Four screws and that was it.
    After fitting a couple of crimp terminals to the two loose cable ends, the motor was tested on a 12 volt battery and found to drive the Omnistep gearbox in both forward and reverse directions perfectly, even with a temporary dummy load applied to the cog.
    I have included three photos for clarity.


    Burnt out Omnistep motor alongside Fiesta window gearbox


    Another view of burnt out Omnistep motor alongside Fiesta window gearbox


    Original Omnistep gearbox with replacement motor fitted

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