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Thread: 1988 K75C White 205k Alternator damper cup nut torque spec

  1. #1
    PeteG
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    1988 K75C White 205k Alternator damper cup nut torque spec

    Hello,

    Removed my dead alternator fan and damper cup. Nut came off with impact wrench. Damper cup and fan were pleasantly easy to remove. Now it is time to install them on the refurbished one.

    Clymer's doesn't have a torque value for the nut (shown). I'm not finding it on a search here or in Tech. I found this spec on the web (shown). Does 37 ft lbs. sound correct to those that have gone down this path before me?

    Thanks in advance,
    Pete
    K75 alternator nut.jpgAttachment 75171
    Last edited by pjar; 08-08-2019 at 04:38 PM.

  2. #2
    3 Red Bricks
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    BMW factory spec. (From BMW factory repair manual) is 45nm +/- 6.

    That converts to 33 ft/lb +/- 4.

    37 ft/lb would work fine.






    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  3. #3
    PeteG
    Join Date
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    Quote Originally Posted by 98lee View Post
    BMW factory spec. (From BMW factory repair manual) is 45nm +/- 6.

    That converts to 33 ft/lb +/- 4.

    37 ft/lb would work fine.






    Thank you Lee!
    Pete

  4. #4
    Registered User drneo66's Avatar
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    Just an FYI for that torque chart - the upper and lower fork pinch bolt recommendations are reversed. Everything else worked great as a reference (and was comparable to my Haynes when possible) through my K75 wrenching/ownership.
    Current: 2007 BMW R1200RT
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

  5. #5
    PeteG
    Join Date
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    Quote Originally Posted by drneo66 View Post
    Just an FYI for that torque chart - the upper and lower fork pinch bolt recommendations are reversed. Everything else worked great as a reference (and was comparable to my Haynes when possible) through my K75 wrenching/ownership.
    Great catch dreno66,Attachment 75190
    I've edited the spec chart, deleted the prior post, and have posted it again with the correction. It now agrees with my Clymer as well.
    Pete
    Attached Images Attached Images

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