First, thanks to those who responded to my previous request reguarding the
mysteriouly disappearing brake fluid.
The concensus was that the master cylinder was still at fault, despite my
previous attempt at a rebuild.
So, I bought a brand new one, and installed it. Replaced the brake fluid,
and began pumping ...
I found the leak.
There before my eyes, the plug to the PDWA warning switch popped off and
fluid was leaking from the switch. With the plug removed, fluid could be
seen welling up in the switch socket. I removed the entire switch. The
PDWA valve looked "centered", but after drying the area, fluid could be seen
welling up in this area too.
So, is my problem the PDWA or the PDWA warning switch, or both? Should
fluid be seen coming from the PDWA valve when the warning switch is removed?
(somehow, I'm guessing it shouldn't)
Is it possible to test the PDWA valve to see if it's functioning?
Thanks
Ross
75 TR6
>Hello Triumph Experts,
>
>You've helpped me before, so I'm back.
>
>About 1 year ago, the brake fluid in my 75 TR6 disappeared while at rest
>(about 2 - 3 months) There was no obvious source of the leak, and I was
>instructed that it probably leaked at the o-ring between the master
cylinder
>and booster. I rebuilt the master cylinder and had the booster rebuilt
>professionally, replaced fluid with DOT-5 and put in new rear cylinders.
>
>Everything was great for about a year.
>
>Now the cars been parked for the past few months (I spent the latter part
of
>the summer racing my other car, which shall remain nameless) and I go to
>drive it a couple of weeks ago, and, you guessed it, no brake fluid!!
Again
>no source of the leak -- i.e. there is the same stain marks on the floor
>that have been present as long as I've owned the car (7 years). All four
>brakes look dry. Brake lines have gunk all over them, but no more than
>usual.
>
>Also, I'm told that if all the fluid leaked into the booster, it would
>likely cause excessive smoke on the next start-up, as the fluid was sucked
>into the engine and burned -- well there was no excessive smoke.
>
>Ok, so where's the leak? How do I go about finding it?
>
>Thanks,
>Ross
>
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