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Thread: U joint repair

  1. #1
    protomike64
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    U joint repair

    Can the U Joints be replaced on a 75/5? Working on a bike that has been hit and damaged the u-joint. Do i need to find a new one? How do i know if its a LWB or not? I have a pic of the swing arm. Any help?
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  2. #2
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    u joint

    Just below the flange you will see where there is a short cylinder(2"+or-)spliced in which makes it a LWB.Most of the collective agree that a complete replacement of the swingarm including driveshaft is the most economical way to go-check used.If the u joint experienced enough trauma to break then the swingarm is probably compromised too.
    Russ

  3. #3
    Registered User lmo1131's Avatar
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    Can the U Joints be replaced on a 75/5?
    No. Not exactly. But the drive shaft/u-joint assembly can be repaired. At over $600 for a new drive shaft, I had mine rebuilt for around $200.

    Read: http://www.bmwmoa.org/forum/showthre...hlight=u-joint

    In particular, you're looking to hook up with Henderson Precision to rebuild your driveshaft u-joint.
    Last edited by Lmo1131; 12-12-2011 at 06:42 AM.
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  4. #4
    Registered User lmo1131's Avatar
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    How do i know if its a LWB or not?
    Easy... read this: http://www.bmwmoa.org/forum/showthread.php?t=57237


    LWB =

    Or ...

    You have a long wheel base swing arm.
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  5. #5
    protomike64
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    Flea market guy has a shaft. This forum is great. Best club i ever joined. The bike is cool too.

  6. #6
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    i think i paid around $160 for new u-joint with these guys.

    http://www.machineservice.com/
    Last edited by bikerfish1100; 12-14-2011 at 07:25 PM.
    Ride Safe, Ride Lots

  7. #7
    Registered User lmo1131's Avatar
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    i think i paid around $160 for new u-joint with these guys.
    ... who guys?
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  8. #8
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    Quote Originally Posted by Lmo1131 View Post
    ... who guys?
    what you talking 'bout?
    Ride Safe, Ride Lots

  9. #9
    mymindsok
    Guest
    $160 to have a U-joint replaced?

    You can buy a good used replacement drive shaft for $25! Check IBMR's flea market or Ebay!

  10. #10
    Registered User lmo1131's Avatar
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    sorry bf... didn't see your "link".. . ..
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  11. #11
    protomike64
    Guest

    Swing arm

    Found one on E Bay $60 (swingarm and shaft).... Again we will see what we get.

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