Just had my brakes fail

Discussion in 'Tech/Mech General' started by Wildbill, Aug 3, 2013.

  1. Wildbill

    Wildbill Funster

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    i cant believe watt has happened I have just had the brakes fail on the van I serviced the disc’s and drum’s just over two weeks ago replacing one of the slave cylinder’s
    Checked all the pipes and lines flushed thought with new fluid and the master cylinder has s………t it’s shelf


    Wondering if I did something wrong
    :cry::Doh:
     
  2. haganap

    haganap Funster Life Member

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    wow bill, you ok? did you press the one in the middle? if you done that mate, then it's nothing you done wrong :Wink:
     
  3. teddybard

    teddybard Read Only Funster

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    No nothing of technical stuff
    just hope you are Ok and theres no damage
    Roger & Sheila:Smile::BigGrin:
     
  4. pappajohn

    pappajohn Funster Life Member

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    I doubt it Bill...probably coincidence and would have failed anyway.

    just a thought though.....you did use the correct spec fluid ?

    it should be DOT 4

    the wrong spec can affect seals.
     
    Last edited: Aug 3, 2013
  5. Wildbill

    Wildbill Funster

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    Yes mate we just got recovered home had to change the under where it happened near thirsk on the A19 we were just going up to Scotland to see the grandkids so disappointed
    :Sad:
     
  6. Wildbill

    Wildbill Funster

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    yes used the right speck fluid frome fieat think your dright coincidence :Eeek:
     
  7. Wildbill

    Wildbill Funster

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    Louder horn needed I think
    :Rofl1:
     
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  8. greyman1

    greyman1 Read Only Funster

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    master cylinders can sometimes fail after brake overhauls /fluid change due to the way the system was bled ! pumping the pedal to the floor to push the fluid through can damage the seal [which was ok when it was only being subjected to minimal movement ] but the extended range that bleeding puts on it can see it off ! i always like to use a pressure bleeder so that no pressing of the pedal is required untill the system is closed up . regards garry
     
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  9. Wildbill

    Wildbill Funster

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    thanks greyman i only ever use pressure bleeder i have dune for years think it is just coincidence will have her back fighting fit in a few days I hope :pray:
     
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  10. jonandshell

    jonandshell Funster

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    I second that!

    It is common for an old master cylinder bore to wear over a short stroke. When you bleed the system, the cylinder piston passes over the wear steps previously created. This cuts the feathered edge of the seals and causes internal leakage and the ability for the master cylinder to recuperate. The result is that your pedal goes to the floor!

    Glad nobody was hurt Bill!:thumb:
     
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  11. jhorsf

    jhorsf Read Only Funster

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    Only happened to me once in a car I just bought going down hill pedal to the floor oh well pull the handbrake on NOTHING :Eeek: the kind owner before me had "repaired" the rear brakes single system in those days and not put the little clips that holds the brake shoe on to the post, piston goes behind shoes and pops out no brakes:shout:.
    not nice when going downhill rubbing your tyres against the kerb and changing down in an attempt to stop before the sharp bend at the bottom of the hill.
    Now you know why seats were always brown in those days:Rofl1:
     
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  12. vwalan

    vwalan Funster

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    quick hone out and a new piston and seals kit should cure it . every few years its worth not just changing fluid but doing a brake service . m,cyl caliperts and wheel cylinder kits . saves a fortune in the long run .
     
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  13. Wildbill

    Wildbill Funster

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    new kit in job dune:thumb:
     
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  14. Hayleylulu

    Hayleylulu

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    Iv made a note of your name not to let you touch are van :Rofl1::Rofl1::Rofl1: but glad that your ok
     
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  15. Wildbill

    Wildbill Funster

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    Just comeback from my friends garage put it on brake tester thingamabob spot on says the man back on the road
    :BigGrin:
     
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