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weird brake prob and solution

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  • weird brake prob and solution

    i couldn't figure out why my master cyl would lock up solid, but no fluid would flow. i disassembled it and cleaned thoroughly, didn't change. this weekend at the swap meet, a bought a couple of used brake lines for $1 apiece. so for kicks, i swapped out the brake line. i "primed" the mc, and i could see fluid drip out of the new line. so i proceeded to bleed the brake. fluid would come out of the caliper, but not out of the end of the bleeder. long story short, the bleeder is plugged solid! so for the last couple of days i've been chasing a mc problem that was really a plugged brake line and bleeder. learn something new everyday!
    1981 xs1100 midnight special
    1983 750 midnight maxim
    resurrected:
    1977 goldwing
    1980 cb750
    North central Wisconsin

  • #2
    The first time I did my rear brakes, I discovered that the bleed screw literally had NO HOLE! I thought maybe it was plugged, but after a thorough cleaning, there was no hole in the metal at all. Not sure how it had been bled in the past, but I replaced the screw, and now it works fine. Dealer got over $12 for that screw though!
    1980 XS850SG - Sold
    1981 XS1100LH Midnight Special (Sold) - purchased 9/29/08
    Fully Vetterized and Dynojet Kit added, Heated Grips, Truck-Lite LED headlight, Accel Coils, Irridium plugs, TKAT Fork Brace, XS850LH Final Drive & Black SS Brake lines from Chacal.
    Here's my web page devoted to my bike! XS/XJ User's Manuals there, and the XJ1100 Service Manual and both XS1100 Service manuals (free download!).

    Whether you think you can, or you think you cannot - You're right.
    -H. Ford

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    • #3
      Originally posted by CatatonicBug View Post
      The first time I did my rear brakes, I discovered that the bleed screw literally had NO HOLE! I thought maybe it was plugged, but after a thorough cleaning, there was no hole in the metal at all. Not sure how it had been bled in the past, but I replaced the screw, and now it works fine. Dealer got over $12 for that screw though!
      Don't remember how much it was, but autozone had one that fit my caliper. I think it was under $5, but not sure.
      1978 Yamaha XS 1100E "Monster" 2010-2012
      2004 RCM-50GL 2008-2010, Don't ask, don't tell (don't really know)

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      • #4
        The bleeder screws are pretty standard between all brakes, so just ask for an 8mm thread bleeder screw and you have about a 99% chance of getting the right thing.
        Ich habe dich nicht gefragt.

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        • #5
          I work in automotive repair, I've got BUCKETS of them.

          They're nothing special........same as a car.

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          • #6
            Originally posted by CatatonicBug View Post
            Dealer got over $12 for that screw though!
            Hmmm. Looks to me like the dealer got the $12, and you got the screw...
            Ken Talbot

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            • #7
              Originally posted by Ken Talbot View Post
              Hmmm. Looks to me like the dealer got the $12, and you got the screw...
              No kidding... That was before I learned the tricks of maintaining these things...
              1980 XS850SG - Sold
              1981 XS1100LH Midnight Special (Sold) - purchased 9/29/08
              Fully Vetterized and Dynojet Kit added, Heated Grips, Truck-Lite LED headlight, Accel Coils, Irridium plugs, TKAT Fork Brace, XS850LH Final Drive & Black SS Brake lines from Chacal.
              Here's my web page devoted to my bike! XS/XJ User's Manuals there, and the XJ1100 Service Manual and both XS1100 Service manuals (free download!).

              Whether you think you can, or you think you cannot - You're right.
              -H. Ford

              Comment


              • #8
                i was able to clean the gunk out of the bleeder, so a free fix. now i'll try to clean out the brake line for a spare...
                1981 xs1100 midnight special
                1983 750 midnight maxim
                resurrected:
                1977 goldwing
                1980 cb750
                North central Wisconsin

                Comment

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