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Re: [TR] Master Cylinder help

To: <tr3driver@ca.rr.com>, Truiumphs <triumphs@autox.team.net>
Subject: Re: [TR] Master Cylinder help
From: Bob Rochlin <r_rochlin@hotmail.com>
Date: Fri, 24 Apr 2009 23:53:48 +0000
Randall, Jim, and John,  Thanks for your insights.  I do know that the PDWA
works be cause it takes me as long to re-center the PDWA after I bleed the
brakes as to bleed the brakes.
   I will reexamine the seals as there must be some damage somewhere to cause
such a catastrophic failure.  The dark color of the brake fluid says to me
that there was some disintegration of the seals, but I would have thought that
this would cause a gradual failure and wouldn't "heal" from a complete
failure.  Thanks.  Bob (still looking...)

> From: tr3driver@ca.rr.com
> To: triumphs@autox.team.net
> Date: Fri, 24 Apr 2009 13:49:08 -0700
> Subject: Re: [TR] Master Cylinder help
>
> > 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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