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Rear Brake hard to push

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    #1

    Rear Brake hard to push

    1981 GS750E

    I just changed my sprockets and chain. When I put the rear wheel back on and took my test ride, I noticed that the rear brake seems quite a bit harder to operate. I was very careful to reinstall it just as it was (and supported it carefully when it was off the wheel).

    What could I have done to mess it up?


    Mike
    Tags: None
    #2
    Check fluid in master cylinder, Push pedal down VERY VERY HARD, release them completely. Do this about 10 times. Anytime I adjust chain I have to run up and downd the block, starting and stopping, about 10 times, then it's fine again. Don't know why.

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      #3
      Originally posted by arveejay View Post
      Check fluid in master cylinder, Push pedal down VERY VERY HARD, release them completely. Do this about 10 times. Anytime I adjust chain I have to run up and downd the block, starting and stopping, about 10 times, then it's fine again. Don't know why.
      OK thanks .. I will give that a try this morning.

      Mike

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        #4
        I have a 79 750L. Soon after I bought it two years ago, I chainged the chain as well, and the brakes would not work at all. The pedal was hard, but no brakes. Long story short, there was rust or dirt in the master cylinder that had blocked things up. I took it apart and cleaned everything, including the caliper cylinders, and put in fresh fluid. Has worked fine since. Just something to be aware of. It is a good idea to change the brake fluid in any vehichle once in a while as the moisture inhibiters break down.

        Greg O

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          #5
          Maybe when the caliper was removed and laid sideways, the bad stuff was dislodged.

          Mike

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            #6
            This is probably a problem with gunk in the MC or caliper, as noted above, but while you're there, you'll also want to make sure the pedal is able to move freely -- it should be greased where it pivots in the frame.
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              #7
              Originally posted by bwringer View Post
              This is probably a problem with gunk in the MC or caliper, as noted above, but while you're there, you'll also want to make sure the pedal is able to move freely -- it should be greased where it pivots in the frame.
              I will add that to the list of things yet to be done.

              A test ride later today revealed that the issue is not as bad as it was earlier.

              I have to read up on hydraulic brake maintenance (sure there are tons of posts). My other bike is cables and shoes front and rear !

              Thanks for the tip.

              Mike

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