Results 1 to 5 of 5
  1. #1
    mtbr member
    Reputation: awai04's Avatar
    Join Date
    Jul 2004
    Posts
    902

    Hydraulic brake trouble

    Ok, my brake lever almost touches the handlebar before I get any clamping force from my (front Shimano) hydraulic brake, and there's a little bit of oil coming from my left brake lever. What's up?? Can I fix this, or, should I let my LBS look it over?

  2. #2
    Bike Whore
    Reputation:
    Join Date
    Mar 2004
    Posts
    989
    Sounds like there is a leak in your hydraulic system (seems like the lever). Because of the leak, there is not enough fluid in your line to push the pads with the normal lever action and now requires more lever to compensate for the lack of fluid.

  3. #3
    Telling Your Future
    Reputation: SteamDonkey's Avatar
    Join Date
    Apr 2005
    Posts
    87
    Most likely this is a bad master cylinder. You'll prolly need your LBS to replace the master cylinder. I dunno how serviceable Shimano disc brakes are. Hope that the Shimano disc brakes are more serviceable than their derailleurs. You might be better off buying a new caliper.


    Quote Originally Posted by awai04
    Ok, my brake lever almost touches the handlebar before I get any clamping force from my (front Shimano) hydraulic brake, and there's a little bit of oil coming from my left brake lever. What's up?? Can I fix this, or, should I let my LBS look it over?
    <<<Yawn.>>>

  4. #4
    Chrome Toaster
    Reputation: Hecubus's Avatar
    Join Date
    Jan 2004
    Posts
    2,850
    There's too little fluid and possibly air in the line. Thats where the lever reach problem comes from. Where specifically is the oil leaking from? Sounds like most likely the rubber bladder that acts as the lever lid seal is pinched or cracked or was not set correctly when the lid was closed. If thats the case, contrary to popular belief that small part and many others are easily availbale through the QBP catalogue and should cost around $5.

  5. #5
    mtbr member
    Reputation: awai04's Avatar
    Join Date
    Jul 2004
    Posts
    902

    Hey thanks for the replies

    I agree with you guys; there's probably a leak somewhere. I'll probably bring the bike to my LBS just to check it out. Just an aside, but I do store the bike upright (vertical, with the front wheel towards the ceiling). Any relation to the way the bike's stored?? I sometimes wonder...

Similar Threads

  1. me: 10. hydraulic disc brake: 9 (kinda long)
    By alaskarider in forum Women's Lounge
    Replies: 2
    Last Post: 04-08-2005, 10:37 PM
  2. Big big big brake problem....
    By AdamOn6thStreet in forum Brake Time
    Replies: 14
    Last Post: 10-15-2004, 01:33 PM
  3. Kink in my Hydraulic brake cable.. Should I worry?
    By RiftZone in forum Brake Time
    Replies: 2
    Last Post: 08-12-2004, 11:36 PM
  4. Help choosing (Hope hydraulic) brake setup!
    By jualn in forum Singlespeed
    Replies: 2
    Last Post: 08-07-2004, 01:08 PM

Posting Permissions

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