Locked up front brake
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Thread: Locked up front brake

  1. #1
    Member Waymore's Avatar
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    Locked up front brake

    My 92's front brake has started locking up every time I pull the lever. To my untrained eye the cable appears to be fine, but I'm pretty new to owning motorcycles or really anything with a small engine. I can push the lever back out and it releases it but it won't release on its own. Would that be a cable issue or something else?
    Ken likes this.
    1992 TW200 6300 miles. Supposed engine rebuilt by previous owner

  2. #2
    Senior Member Fred's Avatar
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    The perch holding the brake lever can be too tight pinching the brake lever, or the cable could need lube, or the shoes could be so worn that the actuating cam inside the drum could be locking the shoes deployed out, etc.
    Best bet might be to test and lube/adjust the elements while searching for the source of the locked up brakes. For example pull the actuating arm off the drum and see if there is any binding while pulling the brake lever, etc.
    Bobo413, littletommy, Ken and 2 others like this.
    2003 TW200 "Betty Boop"
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  3. #3
    Super Moderator Purple's Avatar
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    DO NOT pull the actuating arm off the drum – you’ll never get it on in the correct position again

    Simply slacken off and disconnect the cable at the front wheel, it’s a lot easier

    Then work the “actuating arm” to engage the brake, and see if it releases – you’ll need to apply a good amount of pressure, but if all’s well, it should release smoothly

    If it does release – start looking at the cable itself – simplest thing to do if it’s stiff is to replace it, or (a) it’ll only happen again, and (b) you’ll only end up replacing it in the end

    (Sorry Fred, but that's been my experience anyway) ……
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  5. #4
    Member Waymore's Avatar
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    Actually I didn't even think of it but I replaced the throttle tube and didn't ride the bike after for a few days just started it to test. I probably titghtened the perch up too much and didn't realize it! If that doesn't work I now know where to start from there. Thanks guys!
    littletommy likes this.
    1992 TW200 6300 miles. Supposed engine rebuilt by previous owner

  6. #5
    Ken
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    Are you sure there is no oil or contaminates on your brake shoes? That will cause them to grab. I put antiseize on the actuating cams. My brakes didn't fully lock up but they would be grabby when cold or when I hadn't ridden it for a bit. I do have to flick my lever back out after braking.
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  7. #6
    Ken
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    I haven't been inside the brake area in a while but you may want to check any springs inside the drum. Maybe they are too stretched out and not pulling it back after the brake has been applied.
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  8. #7
    Senior Member Fred's Avatar
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    Thanks Purple, I’m a disc brake kind of guy so defer drum disassembly tips to you Druids and other old fashioned types who would enjoy Stonehenge on the summer solstice. The intent, however accomplished, is to separate the elements a bit so as to isolate the problem.
    Mel, Purple and Waymore like this.
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    2006 TW200 "Nibbler", a.k.a. “Mr.Gizmo"
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