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Thread: Help with a stuck brake piston

  1. #1
    STR Veteran
    Joined
    Apr 2007
    From
    Aliso Viejo

    Default Help with a stuck brake piston

    So one of the pistons on my Saints is stuck, completely retracked into the caliper. I tried bleeding the brakes and that didn't help, any suggestions how to get it unstuck and working again? BTW the other piston still works. Thanks.

  2. #2

    Default

    Did you try holding the non stuck piston in the caliper while squeezing the brake lever? Try lubing the stuck piston with triflow before you do this.

  3. #3
    Circus Bear Chewyeti's Avatar
    Joined
    Jul 2007
    From
    Yorba Linda

    Default

    well, sounds like you will be doing a rebuild soon....

    so what you can do is split the caliper open. From there, you can use compressed air to blow the piston out.

    Or while it is still together, hold the free piston (as rob said) with a clamp of some sort, and force the non moving piston to free itself under the hydraulic pressure.

    Once you get it apart and unstuck... rebuild it and bleed it. Polish the piston and the bore with UBER fine sandpaper... 2000gritt +
    Resident Lawn Dart

  4. #4
    anachronistic and impulsi Fearless Fly's Avatar
    Joined
    Jan 2007
    From
    Brea, CA

    Default

    Lube it up.
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  5. #5
    STR Veteran davidB's Avatar
    Joined
    Jul 2007
    From
    Tustin

    Default

    Quote Originally Posted by Chewyeti View Post
    well, sounds like you will be doing a rebuild soon....

    so what you can do is split the caliper open. From there, you can use compressed air to blow the piston out.

    Or while it is still together, hold the free piston (as rob said) with a clamp of some sort, and force the non moving piston to free itself under the hydraulic pressure.

    Once you get it apart and unstuck... rebuild it and bleed it. Polish the piston and the bore with UBER fine sandpaper... 2000gritt +
    is it as hard as you've made it seem or not? Seems about time to tear apart my Juicy 7's. I figure I might try polishing them while they're apart

  6. #6
    Circus Bear Chewyeti's Avatar
    Joined
    Jul 2007
    From
    Yorba Linda

    Default

    Its really easy....

    Bring em by with some beer and a rebuild kit
    Resident Lawn Dart

  7. #7
    STR Veteran
    Joined
    Apr 2007
    From
    Aliso Viejo

    Default

    Thanks for the advice. I already tried holding in the other piston and lubing up the one that is stuck but no dice. I guess it just needs to get re-built.

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