[TR] Master Cylinder help

Randall tr3driver at ca.rr.com
Fri Apr 24 14:49:08 MDT 2009


> The other was that one circuit had
> failed previous and when the second failed I was left with no braking.
> I,however, don't see how I wouldn't have noticed the diminished braking
> ability,

FWIW, when I bought my second Stag and drove it home (OK to CA), apparently
it's rear brakes had not been working for a long time.  I didn't notice, the
previous owner didn't notice; possibly even the owner before that didn't
notice.  The rear brakes just don't contribute that much unless you are in
the habit of making near-panic stops.  Which is how I discovered that they
didn't work.

The other Stag suffered a failure somewhat similar to yours, except that I
never found out if it would "cure itself" by the next day.  I was already on
my way to a shop to have it repaired when the hydraulic brakes quit working
completely.  Then the handbrake quit too (but that's another story).  The
shop pulled the MC with no further tests, and I found that both  seals were
torn; not out by the edge where it would be visible, but in the flat portion
that sits inside the groove on the piston.  No idea if they both tore at the
same time, or if one had already been like that for some time.

Of course the Stag MC is quite a bit different than the TR6, so that may not
be your problem.  But I don't see how else you could lose both sides at
once.

Maybe the PDWA isn't as useless as most people seem to think?

Come to think of it, is there any chance your PDWA has been modified so that
it no longer keeps the two circuits separate?

-- Randall 


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