Results 1 to 7 of 7

Thread: Help with a stuck brake piston

  1. #1
    STR Veteran
    Joined
    Apr 2007
    From
    Aliso Viejo
    Thanks
    345
    Thanks earned: 413

    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

    Joined
    Jul 2006
    From
    RSM
    Thanks
    4,041
    Thanks earned: 2,746

    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. post thanked by:

    Pato (03-24-2009)

  4. #3
    Circus Bear Chewyeti's Avatar
    Joined
    Jul 2007
    From
    Yorba Linda
    Thanks
    15,222
    Thanks earned: 16,326

    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

  5. post thanked by:

    Pato (03-24-2009)

  6. #4
    anachronistic and impulsi Fearless Fly's Avatar
    Joined
    Jan 2007
    From
    Brea, CA
    Thanks
    444
    Thanks earned: 4,732

    Default

    Lube it up.
    Attached Images Attached Images                    

  7. post thanked by:

    Chewyeti (03-24-2009), Pato (03-24-2009), Rob (03-24-2009)

  8. #5
    STR Veteran davidB's Avatar
    Joined
    Jul 2007
    From
    Tustin
    Thanks
    4,072
    Thanks earned: 9,692

    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

  9. #6
    Circus Bear Chewyeti's Avatar
    Joined
    Jul 2007
    From
    Yorba Linda
    Thanks
    15,222
    Thanks earned: 16,326

    Default

    Its really easy....

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

  10. #7
    STR Veteran
    Joined
    Apr 2007
    From
    Aliso Viejo
    Thanks
    345
    Thanks earned: 413

    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.

  11.    Sponsored Links

Similar Threads

  1. Replies: 4
    Last Post: 02-03-2009, 01:02 PM
  2. Avid 7 Brake Noise
    By shudder in forum The Workshop
    Replies: 15
    Last Post: 01-08-2009, 03:53 AM
  3. unequal piston movement in hyd. brake
    By UR2KLOS in forum The Workshop
    Replies: 14
    Last Post: 10-31-2008, 07:35 AM
  4. Hayes Disc Brake 5" Rotor
    By BobBurnes in forum The Workshop
    Replies: 6
    Last Post: 02-25-2008, 03:55 PM
  5. Piston Stuck?
    By b5driver in forum The Workshop
    Replies: 13
    Last Post: 01-14-2008, 11:27 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •