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  1. #1
    Philip Fontana
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    Head rest motors

    Hi Everyone,

    both head rest motors no longer work. are they easy to replace?
    anyway to manually crank one down?
    thanks,
    Phil
    Anchorage, AK


  2. #2
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    Member No: 129626 MomentumBob is an unknown quantity at this point MomentumBob's Avatar
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    Re: Head rest motors

    If the motors still run, i.e. you can hear them when you depress the push buttons, then the problem is likely shortening of the inner cable of the drive as a consequence of the torque tightening the outer windings of the core. This can be remedied by removing the back panel of the seat (remove two small screws at the bottom and lift up on the panel to clear the tabs at the top), cutting the plastic outer sheath of the drive, extracting the inner cable, removing approx. 1/2" of the outer sheath, put it back together with neoprene fuel line and hose clamps (or specially turned aluminum bushings as I did)and you will esentially have lengthened the inner cable. If you do a search I think a member on one of the 7 series boards has pictures. I usually get too intense to remember to take pictures until after i've already finished.

  3. #3
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    Member No: 44913 warp1 is an unknown quantity at this point warp1's Avatar
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    "specially turned ... bushings"?

    I thought *I* was compulsive!

    Read this for the quick easy fix:
    Fixing power headrest cables--
    C.R. Krieger
    '88 535is - Da Red Dog

    <img src="http://memimage.cardomain.net/member_images/2/web/578000-578999/578895_4_full.jpg">

  4. #4
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    Re: specially turned ... bushings?

    To put the situation in perspective, I had the material and the facilities in my shop to turn up the bushings. The fuel line would have entailed a 10 minute drive to the auto parts store.

  5. #5
    Bruce
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    and the coathanger ---- how long to the closet?


  6. #6
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    Re: and the coathanger ---- how long to the closet?

    The short answer is two minutes. The long answer is that at the time I did the job, I wasn't aware that you could "borrow" engagement from one end of the cable to lend to the other end, consequently the coat hanger gambit was not an option.

  7. #7
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    In the overall scheme of things ...

    ... you probably got the same sense of 'instant gratification' as the mere fumblethumbs like me who hack up coathangers. The big difference is, I can amuse and amaze onlookers as I have the equipment (a phillips screwdriver, a 10mm wrench, a wirecutter, and a coathanger) to do this *in the field*. We did a 'headrest motor failure' demo ad hoc at 5er Fest on one guy's car. At least it gave him a good excuse to pull a Royalblau car under the tent out of the sun. Also taught us all the wisdom of not pinching (and shorting) the wires between the motor and the bracket as you bolt it back in. >:^(--
    C.R. Krieger
    '88 535is - Da Red Dog

    <img src="http://memimage.cardomain.net/member_images/2/web/578000-578999/578895_4_full.jpg">

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