brake fluid overheating or air in system?
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  1. #1
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    Default brake fluid overheating or air in system?

    hey all

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    My 205's brakes are binding on the rears (self-adjusting drums). When cold the brakes are fine (normal travel - about half inch) but after about 100 klms the brake pedal firms up (no travel). Then I can feel the rears binding up.

    I'm wondering if the brake fluid is overheating or is it trapped air?

    Any advice appreciated

  2. #2
    Simon's Avatar
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    Iíve no idea about Peugeot brakes, but is it the adjusters that have seized up? Have the shoe springs become stretched, soft or broken? Or are there different master cylinders for those with and without rear drums. If someone has put an all disc master cylinder in that may be causing the problem. Has there been any work undertaken on the brakes recently?

    If it was air, the pedal would be spongy, same if the fluid was overheating.

  3. #3
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    Quote Originally Posted by Simon
    Iíve no idea about Peugeot brakes, but is it the adjusters that have seized up? Have the shoe springs become stretched, soft or broken? Or are there different master cylinders for those with and without rear drums. If someone has put an all disc master cylinder in that may be causing the problem. Has there been any work undertaken on the brakes recently?

    If it was air, the pedal would be spongy, same if the fluid was overheating.
    I'll have to investigate further. Not sure if the adjusters are seized as it only occurs when hot. The previous owner mentioned getting brake work done by a Pug specialist (who was apparently away that day and as fate would have it a mercedes specialist "worked" on them ). This was some time ago however.

    Come to think of it the pedal is a bit spongy - I'll try bleeding them before getting my hands too dirty. Thanks Simon - cheers mate.

  4. #4
    Fellow Frogger! tasgill's Avatar
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    Quote Originally Posted by graham66
    hey all

    My 205's brakes are binding on the rears (self-adjusting drums). When cold the brakes are fine (normal travel - about half inch) but after about 100 klms the brake pedal firms up (no travel). Then I can feel the rears binding up.

    I'm wondering if the brake fluid is overheating or is it trapped air?

    Any advice appreciated
    Also check that you have free travel in your brake pedal before it starts activating the master cylinder. Don't know what the book says, but a couple of millimetres should be heaps.

    Terry

  5. #5
    Fellow Frogger! tasgill's Avatar
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    Quote Originally Posted by Simon
    If someone has put an all disc master cylinder in that may be causing the problem.
    I believe the problem happens the other way around, a drum brake master cylinder will cause problems when fitted to a disk braked car. Drum brakes use a check valve in the circuit, disc brakes dont.

    Terry

  6. #6
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    Thanks Terry - cheers

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