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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