Rear master cylinder leak?

Discussion in 'Parallel Universe' started by B-B, Jul 3, 2011.

  1. B-B

    B-B out of my lane

    Joined:
    Feb 17, 2008
    Oddometer:
    226
    Location:
    N. Georgia, USA
    Noticing that when I engage the rear brake, I'm getting small bubbles of fluid leaking out around the boot on the master cylinder. I'm on the low side for fluid level, but I've never changed it (actually noticed this when I was looking at the system in preparation to change it). My brakes don't seem to be affected. Should I just change the fluid and watch the level, or is this a warranty issue that needs to be addressed ASAP?
    #1
  2. raider

    raider Big red dog

    Joined:
    Jan 6, 2005
    Oddometer:
    1,581
    Location:
    Adelaide, South Australia
    Leaking brake fluid needs to be attended to ASAP. If your fluid can get out, air (and moisture) can get in, both of which can prevent the brakes from working and potentially corrode delicate bits.
    #2
  3. JoelWisman

    JoelWisman Long timer

    Joined:
    Apr 22, 2009
    Oddometer:
    1,392
    Location:
    STL, MO, USA
    Dito, especially if u have abs. Replace right away asuming it is brake fluid leaking and not just water trapped under the boot.
    #3
  4. B-B

    B-B out of my lane

    Joined:
    Feb 17, 2008
    Oddometer:
    226
    Location:
    N. Georgia, USA
    hmmmm...I wonder. The little droplets appear when I'm engaging the rear break; I'm pretty sure that its fluid but I did just wash it...
    #4
  5. lunaticTR

    lunaticTR Adventurer

    Joined:
    Oct 3, 2009
    Oddometer:
    99
    Location:
    Ankara, Türkiye
    After 3 years and 60K km. mine started to leak as well. It's been worn out faster than I would like it to do. I am out of warranty for over a year. Is there a rebuild kit I can order online, or do I have to pay a hefty price for the OEM mastercylinder?
    #5
  6. Lucky:)

    Lucky:) Been here awhile

    Joined:
    Apr 20, 2008
    Oddometer:
    228
    I have similar on 24,000miles (40, 000km)
    Is there any repair kit?

    [​IMG]
    #6
  7. TowPro

    TowPro Lets ride

    Joined:
    Aug 21, 2009
    Oddometer:
    3,476
    Location:
    Compass PA
    Brake fluid feels, smells (and taste) different then water. Pick your test.
    #7