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    Brake Dragging

    After putting the front wheel back on a couple of nights ago and tightening everything up to only hand tight (haven't torqued it yet), I'm hearing a light dragging sound coming from the right caliper. I know it is specifically that one because I took off both calipers and respun the wheel - no sound. Put the left one on and respun - no sound. Put only the right one on and respun and it's dragging.

    I already did a search and found most of the articles saying there's nothing to worry about but I'm still not so sure. I also had a tough time getting that caliper back onto the rotor but it finally went after some coaxing. Will bleeding the front brakes fix that drag or do I have something else wrong? I know the piston for that one didn't engage although I can move the pads in with a screwdriver and get a little play. I will say the left piston fully engaged but I pushed it back out with a screwdriver and like I said no sound is coming from that side.

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

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

    Sit tall in the saddle Hold your head up high
    Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
    and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

    #2
    It sounds to me like you have one or both of:

    1. Crud build up behind piston is limiting movement
    2. Piston seal needs replacing

    Did you ever pop the piston out and see what was inside your caliper?
    1978 GS 1000 (since new)
    1979 GS 1000 (The Fridge, superbike replica project)
    1978 GS 1000 (parts)
    1981 GS 850 (anyone want a project?)
    1981 GPZ 550 (backroad screamer)
    1970 450 Mk IIID (THUMP!)
    2007 DRz 400S
    1999 ATK 490ES
    1994 DR 350SES

    Comment


      #3
      No not yet. On my list of things to do this winter when I rebuild the MCs and replace the lines. Will I experience issues with the dragging or is it normal like everyone says?
      Cowboy Up or Quit. - Run Free Lou and Rest in Peace

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

      Sit tall in the saddle Hold your head up high
      Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
      and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

      Comment


        #4
        Yeah, dragging will cause your piston, caliper and disc to heat up

        At best - warped rotor
        At worst, boil your brake fluid and no brakes

        As an temporary fix, I'd get new seals and pop out both pistons and see what you've got going on - old seal, rusted piston, 1/2 lb of gunk - and see if you can just clean it up, or if you should order a rebuild kit now. The seal is basically an O ring, so they're easy to change

        You shouldn't ride with sketchy brakes, we'd be short a cowboy!
        1978 GS 1000 (since new)
        1979 GS 1000 (The Fridge, superbike replica project)
        1978 GS 1000 (parts)
        1981 GS 850 (anyone want a project?)
        1981 GPZ 550 (backroad screamer)
        1970 450 Mk IIID (THUMP!)
        2007 DRz 400S
        1999 ATK 490ES
        1994 DR 350SES

        Comment


          #5
          brake lines can become clogged also.
          2002 bmw r1150gs 1978 gs1000E skunk les pew 1979 gs1000L dragbike
          82 gs1100L probably the next project
          1980 gs1000G the ugly 1978 gs750E need any parts?
          https://m.youtube.com/watch?v=m_m2oYJkx1A
          1978 gs1000E skunk #2 RLAP
          https://live.staticflickr.com/65535/...2f1debec_t.jpg

          Comment


            #6
            Thanks all and to Steve for some other advice. I will do some work later this week (another storm came through here this afternoon) to narrow things down. I'll let you all know later.
            Cowboy Up or Quit. - Run Free Lou and Rest in Peace

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

            Sit tall in the saddle Hold your head up high
            Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
            and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

            Comment


              #7
              Drag

              When you spin it, hard, with your hand, how long does it stay spinning?
              1980 GS1100E....Number 15!

              Comment


                #8
                Chucky,
                Steve and I talked about that last night on the phone but I had a t-storm coming through and couldn't do any work at the time. I have a commitment tonight to attend to so I'll try to do that and a few other tips Steve suggested tomorrow evening or this weekend.
                Cowboy Up or Quit. - Run Free Lou and Rest in Peace

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

                Sit tall in the saddle Hold your head up high
                Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
                and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

                Comment


                  #9
                  What a drag!!

                  Originally posted by cowboyup3371 View Post
                  Chucky,
                  Steve and I talked about that last night on the phone but I had a t-storm coming through and couldn't do any work at the time. I have a commitment tonight to attend to so I'll try to do that and a few other tips Steve suggested tomorrow evening or this weekend.
                  What I was getting at in my first post is this: With disc brakes (also drum brakes) a very slight amount of drag is normal. Guys that work on brakes a lot call it a "hint of drag". However, it should be very slight and your tire should spin for a couple of seconds with a good, hand spin and the bike should be able to be pushed easily on a flat surface.

                  I've experienced it on every bike I've owned that had disc brakes, including a couple of new ones. I'd suggest you do whatever Steve suggested and make sure all is well. You certainly don't want a problem with your front brakes!

                  Good luck! All will be well!!
                  1980 GS1100E....Number 15!

                  Comment


                    #10
                    Originally posted by cowboyup3371 View Post
                    After putting the front wheel back on a couple of nights ago and tightening everything up to only hand tight (haven't torqued it yet), I'm hearing a light dragging sound coming from the right caliper. I know it is specifically that one because I took off both calipers and respun the wheel - no sound. Put the left one on and respun - no sound. Put only the right one on and respun and it's dragging.

                    I already did a search and found most of the articles saying there's nothing to worry about but I'm still not so sure. I also had a tough time getting that caliper back onto the rotor but it finally went after some coaxing. Will bleeding the front brakes fix that drag or do I have something else wrong? I know the piston for that one didn't engage although I can move the pads in with a screwdriver and get a little play. I will say the left piston fully engaged but I pushed it back out with a screwdriver and like I said no sound is coming from that side.

                    Thanks guys
                    Been there myself many times. My old 1100E, a few old dirt bikes, and also my GSXR. Most of the time a locked caliper is residual moisture within the brake fluid has corroded the caliper piston bores causing the piston to bind. Most people don't realize not only does hydraulics place forces on the piston, but releasing the lever (in ideal world) places a small amount of vaccume forces which is supposed to withdraw the piston a small amount. Dissasemble your calipers, take some 220 grit emery and some oil and polish the bores, and you will be good to go.

                    Comment


                      #11
                      Okay, I must have been stupid. I checked the brakes today, adjusted each caliper by tweaking each by hand a little and retightened them. There's no dragging sound now so I think maybe I didn't set them correctly.

                      I'm going to at least bleed everything, take them apart, and clean out the master cylinders. I then will replace the lines and refill the reservoirs with new fluid.

                      Thanks all for the help and sorry for the trouble.
                      Cowboy Up or Quit. - Run Free Lou and Rest in Peace

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

                      Sit tall in the saddle Hold your head up high
                      Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
                      and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

                      Comment

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