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    Nisi061310's Avatar
    Nisi061310 Posts: 2, Reputation: 1
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    #1

    Aug 13, 2010, 12:47 AM
    What can cause the front caliper to come loose on my BMW motorcycle.
    My motorcycle had been in an accident before I bought it. One of the bolts on the front left caliper keeps coming loose. The technician keeps torquing them but this one bolt keeps coming loose. Can someone explain or help
    scortcho's Avatar
    scortcho Posts: 78, Reputation: 3
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    #2

    Aug 13, 2010, 12:56 AM

    Well I don't think the crash had much to do with this, if the bike is old then over time the brake caliper has gone through a lot of force. So after so much force the threads have most likely been pushed/pulled out of shape. If the threads have been pulled apart then the bolt won't hold as well. That along with the vibrations from the engine, and the rattle from the street will cause the bolt to work it's way loose. I'd recommend using a thread locking compound. That should keep the bolt from coming loose
    Nisi061310's Avatar
    Nisi061310 Posts: 2, Reputation: 1
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    #3

    Aug 13, 2010, 01:04 AM
    Quote Originally Posted by scortcho View Post
    well i don't think the crash had much to do with this, if the bike is old then over time the brake caliper has gone through alot of force. so after so much force the threads have most likely been pushed/pulled out of shape. if the threads have been pulled apart then the bolt won't hold as well. that along with the vibrations from the engine, and the rattle from the street will cause the bolt to work it's way loose. i'd recommend using a thread locking compound. that should keep the bolt from coming loose
    Thank you very much
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