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Leaking Pressure Differential Warning Actuator (PDWA) on '78 Spit

To: "Triumph List" <triumphs@autox.team.net>
Subject: Leaking Pressure Differential Warning Actuator (PDWA) on '78 Spit
From: "Michael L. Coop" <mcoop@amfam.com>
Date: Tue, 9 Feb 1999 10:35:25 -0600charset="iso-8859-1"
Importance: Normal
Thanks to all you who submitted opinions on my previous posts.

Can I impose upon you for one more opinion?   Here's what I'm considering as
a temporary fix until I can get a permanent fix for the leaky PDWA.

1. Remove the warning light switch assembly and replacing with the proper
size threaded pipe & cap.

2. Removing the entire interior shuttle assembly (including piston etc.).

3. Reinstalling the PDWA casting empty of the shuttle.

I don't believe that this thing functions as a proportioning valve like we
have in domestic American cars, so I think the brake system should function
normally.   Down side is that I would lose the warning light should one side
of my brake system fail.   Of course, with a Spitfire, I would probably
learn that fact sooner than the light would tell me anyway (as I wrapped it
around a pole or some other object!).

Opinions?

Mike Coop
Michael Coop Agency, Inc.



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