Re: 5000s brake woes

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <3752952F.C669944D@together.net> John Cunningham writes:

> MC is worth looking at, but i would be more concerned about intermittently
> seizing calipers.   this would cause both the hard-to-brake and not-releasing
> symptoms as well as possibly the notchiness.  and i've seen the exact behaviour
> before - brake is hot and seized up, cool down for a little while, then a few
> pumps get it to release.
>
> this would also fit the fact that the brakes stick in traffic - when they start
> to get hot - yet you were able to drive home 2 hrs. (presumably mostly highway)
> without a problem.

The master cylinder problem is caused by tiny leakage after each
pedal depression - that's why you see it in traffic (when you're tapping
the brakes every few seconds) and not on the highway (when you largely
leave the pedal alone).

--
 Phil Payne
 UK Audi quattro Owners Club