Caliper Rebuild Question

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  • J_C
    #1

    Caliper Rebuild Question

    Both of my front calipers are goopy. If my understanding of what I am looking at is correct, each have two rubbery boot type things. On each caliper, one of those boots are disintegrated into a goopy black mess.

    Is this something where I just need to replace the boot? Or could this be symptomatic of a larger problem?

    Thank you
    Tags: None
    • Guest
      #2
      Sounds like brake fluid got ahold of them which means a leaky seal. I do believe someone out there makes rebuild kits fro them. Try the mrcycle link I sent you.

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        • Road_Clam
          #3
          Originally posted by J_C
          Both of my front calipers are goopy. If my understanding of what I am looking at is correct, each have two rubbery boot type things. On each caliper, one of those boots are disintegrated into a goopy black mess.

          Is this something where I just need to replace the boot? Or could this be symptomatic of a larger problem?

          Thank you
          The "rubbery boot" is the external dust seal. Once you pry out that seal, then you need to remove the piston. Inside the caliper bore, you will see the actuall piston seal.

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            • J_C
              #4
              OK, thanks guys. I think I'll have to buy two of those rebuild kits and buy new dust cover boots

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                • SkeletonLake
                  #5
                  order parts to rebuild the master cylinder too

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                    • J_C
                      #6
                      Can't rebuild the master on the 1980 model I dont think...

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                        • Guest
                          #7
                          Originally posted by J_C
                          Can't rebuild the master on the 1980 model I dont think...
                          I just did. Got the kit from mrcycle. What a difference.
                          Last edited by Guest; 09-25-2006, 02:03 AM.

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                            • J_C
                              #8
                              Originally posted by chef1366
                              I just did. Got rhe kit from mrcycle. What a difference.
                              I cant find it on the website... anyway you could post a link?

                              I thought you ended up buying a new piston... where'd you find the kit?

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                                • Busafied
                                  #9
                                  Originally posted by J_C
                                  I cant find it on the website... anyway you could post a link?

                                  I thought you ended up buying a new piston... where'd you find the kit?
                                  http://www.mrcycles.com/fiche_select.asp

                                  scroll to bottom and enter the bike info:

                                  1.PISTON & CUP SET 59600-47810 1$24.70
                                  2.DIAPHRAGM 59667-33620 1$6.08
                                  3.PLATE 59668-33620 1$3.34
                                  5.RESERVOIR 59687-47050 1$11.55
                                  7.WASHER 08322-01063 (replaces 08322-21065) 2$1.08
                                  8.BOLT 01500-06253 (replaces 01107-06255) 2$0.76
                                  9.O RING 59686-33620 1$4.48

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