Greetings fellow netters:
I had a lot of responses from my posting concerning the replacement pressure
differential valve (PDV) on my TR6. Several questions and some solutions were
posed.
>Kevin Spooner: Are you sure they sent the correct part?
Yes the part TRF sent me was the one they meant as a replacement for the TR6
please see below for more info.
A number of other people seem to have the same problem with their PDV as I had.
Just a note of warning to them, and others, if you see brake fluid leaking out
of your warning switch, that screws into the top of the PDV unit, you have bad
O-rings. The switch was not meant to see brake fluid therefore it is not the
problem when you see a leak.
Several people answered my question as to the possibility of rebuilding the old
unit by replacing the O-rings. This is exactly what I ended up doing. I
removed the old valve by removing the bolt at the end of the unit and smacking
it on a piece of wood to remove the actual valve assembly. Once I saw the
original O-rings it was obvious why it was leaking. A quick trip to the local
auto parts store yielded a couple of O-rings of the correct internal and
external diameter that were compatable with brake fluid (word of caution: do not
go to a hardware store as the O-rings they sell may not be compatable with brake
fluid) The unit now works like a charm.
One final note on this subject: John Swauger at TRF informed me today by FAX
that they have pulled these units off the shelf and are sending them back to the
English supplier. John also informs me that TRF has been working on a solution
to leaking valves. TRF stocks replacement O-rings that fit some of the PDVs
installed on TR6s, (apparently there are three types of valves; Why did the
people at Triumph/Girling/ Lucas feel the need to continually change pieces on
these cars at random?). Anyway if you need these O-rings the part # is LDSSB833
the price is $4.50 you may want to contact John first to talk about which of the
3 valves the O-rings fit.
On a happier note, I finally drove my car (The Green Meanie:70 TR6 BRG) for the
first time in 12 years, the last 2 spent on a nut and bolt frame off restoration
last weekend. It was fabulous !!!! I have seen the light, "FREE AT LAST, FREE
AT LAST, THANK GOD ALL MIGHTY I AM FREE AT LAST" of that dreaded "Shipwrights
Disease".
Kevin A. Strait, Ph.D. voice: 612-624-5150
Assistant Professor of Medicine email: strai001@maroon.tc.umn.edu
and Cell Biology/Neuroanatomy fax: 612-626-3840
Box 91 UMHC
University of Minnesota
Minneapolis, MN 55455
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