Good feedback both, thanks.
I had someone work on the rear brakes a while back - I dunno if that's
when this all started or not.
So it sounds like what Peter & Paul are saying (how biblical!) is that I
should pop the PFS out and look down to see if all is well in the hole
it came out of. There would be a piston that can go side to side
(either way) to activate the switch. If it's seals are fubar or it's
really out of position, then the leak could happen there. Hopefully I
don't need to buy a whole new PWA (which seems to list for a painful
price of $329 in VB). What might be in and where might I get a repair
kit for the PWA?
And of course meanwhile I still have this brand new PFS from VB that
doesn't look anything like what is in my car right now (with a brass
threaded part and not just nylon like mine). Now where is that "return
policy"....
Peter C. wrote:
> Tim,
> Firstly, the switch is not the problem. There shouldn't be
> brake fluid at the switch at all. The switch has a small rod that fits
> into a groove in a shuttle piston. Once the piston goes too far either
> way it presses the switch probe and turns on the light to tell you
> there's a differential between the 2 circuits.
> What you should buy is the repair kit (after IDing which PWDA
> you have), or the whole deal.
> Peter C
> ===
> At 01:38 PM 2/25/2003, Tim Holt wrote:
>
>> I noticed a while back that I'm getting a slight leak of brake fluid
>> leaking from my pressure fail switch (that white plastic/nylon thing
>> that threads into the cast brass pressure warning asembly).
>> Specifically it looks like it's leaking IN the plug - where the male
>> plug ends are. Guessing it got bumped once by someone working on the
>> car.
>>
>> So that said, I wanted to replace it. I ordered a new one from Victoria
>> British (part # 7-434), and just got it. Wrong part. This one has a
>> nylon part where the sensor wires plug in, but also a brass/metal part
>> that should thread in. Not at all like what the original looks at.
>> Based on catalog info, it should have been the right one (given I've got
>> a 1275 ('74 midget).
>>
>> So...
>>
>> 1) Going by the catalog, I got the wrong part. Anyone know what would
>> be the RIGHT part?
>> 2) Anyone know of a source for this part other than VB? Moss didn't
>> seem to have it in their catalog.
>> 3) How much danger of a catastrophic failure do I have right now with
>> the leaking part? I had wondered if some day I'll put on the brakes and
>> have it blow out.
>> 4) Until I get the right part, would it be reasonable to just thread in
>> a bolt of the same thread to stop the leak? No pressure failure warning
>> then of course.
>>
>> Thanks.
>>
>> Tim Holt
>> '74 MG Midget
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