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Can't lock rear wheels on brake tester

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  • #1

    Can't lock rear wheels on brake tester

    I understand there is no adjustable bias on these cars (Coupe 10v in question).

    On the brake tester, both rear wheels have almost no effect.

    Both rear calipers are changed and there is no air in the system.

    Any ideas?
    If at first you don't succeed, destroy all evidence that you tried.

    -CQ 3b "S2".
    Tags: None
  • #2
    IS quite possible that you have a problem with the brake pump. Check also both sliders for every rear caliper.
    Audi S4 2.2T 5 spd 1992 for parts
    AUDI A4 1.9TDI daily use

    Audi 80 Quattro 2.0 16V (ACE) aka Competition

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    • #3
      Does it have a rear ride height system that adjusts the brake bias when you put heavy loads in the boot ?

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      • #4
        Originally posted by simons2 View Post
        Does it have a rear ride height system that adjusts the brake bias when you put heavy loads in the boot ?
        Head, nail, on ?
        sigpic
        "For what you spent on that you could have brought a new car"
        BUT I DON'T WANT A NEW CAR!

        1995 S2 Avant, Volcano Black
        1982 VW Golf Mk1, primer yellow, will be finished one day, maybe.
        2003 VW T4 long nose X pack, (has become project)

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        • #5
          I wish it did, Quattro cars (typ89) does not have a load-valve as far as i know
          If at first you don't succeed, destroy all evidence that you tried.

          -CQ 3b "S2".

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          • #6
            Is there not a brake balance valve on the bottom of the master cylinder?

            You can just see it here

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            • #7
              Originally posted by martinws View Post
              Is there not a brake balance valve on the bottom of the master cylinder?

              You can just see it here

              Well, all that does is control pressure to the rear with pressure to the front. Not adjustable in any way. Perhaps worth a try?
              If at first you don't succeed, destroy all evidence that you tried.

              -CQ 3b "S2".

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              • #8
                I don't think its adjustable but it could just be knackered. Could probably replace with adjustable one though.

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                • #9
                  bypass it and if it doesnt lock up then theres a major issue with the master cylinder!
                  1993 URS4 Avant Emerald Green 350+bhp
                  1991 Ford Sierra Sapphire 4x4 in Magenta
                  BoooOOOSSSSSTTTT BANG BANG CHIRP CHIRP

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                  • #10
                    Originally posted by Sleeper_Avant View Post
                    bypass it and if it doesnt lock up then theres a major issue with the master cylinder!
                    How do i bypass it? Just replace it with a T-joint?
                    If at first you don't succeed, destroy all evidence that you tried.

                    -CQ 3b "S2".

                    Comment

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