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Thread: Rear brake hanging up --- help

  1. #1
    Join Date
    Jul 2021
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    Sioux City, Iowa
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    Default Rear brake hanging up --- help

    1980 GS750E. Rear brake was working fine then the bike sat for about a month. Friday got it out and rear pedal very stiff, you could ride it but pedal would stick down and have to move up with my foot. The caliper is not sticking, releases as soon as I physically move the brake pedal up. Went ahead and flushed all the fluid (did this a couple of months ago) just to see if anything changed, it didn't.

    I could use some direction, maybe rear master is shot??

  2. #2
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    The frame hole that the brake pedal shaft goes thru gets really grungy. Take note of the pedal split position before removal and position of the return spring. Check condition of return spring. Replace if broken. Then take it all apart and clean then grease the shaft.

  3. #3
    Join Date
    Jul 2021
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    Great, thanks! Do you know if the shaft that is pushed up from the bottom is part of the m/c or if I take out the brake pedal can I expect it to fall out

  4. #4
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    Not sure. As my rear brake is a drum. Parts diagram on partshark.com or other sites may give a clue or wait for someone else to chime in. And I’m recommending this as a first step because it’s a strong possibility and because it doesn’t cost anything. Problem could very well be in the MC , brake line, or caliper.

  5. #5
    cowboyup3371's Avatar
    cowboyup3371 is offline Forum LongTimer Past Site Supporter
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    Yes, the shaft coming down out of the master cylinder and connects to the shaft going to the rear brake pedal is part of the master cylinder. I agree with Rich, take a look at the pedal connection and make sure the spring is still attached then clean it up

    Cowboy Up or Quit. - Run Free Lou and Rest in Peace

    1981 GS550T - My First
    1981 GS550L - My Eldest Daughter's
    2007 GSF1250SA Bandit - My touring bike

    Sit tall in the saddle Hold your head up high
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  6. #6
    Eli69's Avatar
    Eli69 is offline Forum Sage Past Site Supporter
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    Spray everything with PB Blaster and work it. If that doesn't work something's wrong somewhere.
    1986 yamaha fazer 700 - sold, finally
    2002 bmw r1150gs 1978 gs1000E skunk les pew 1979 gs1000L dragbike
    https://m.youtube.com/watch?fbclid=I...ature=youtu.be
    82 gs1100L probably the next project
    1980 gs1000G the ugly 1978 gs750E need any parts?
    1978 gs1000E skunk #2 RLAP

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