I'm with you Joe,
Unfortunately I own a TR6.
Andy
On 05/01/98 03:38 PM Joe Curry said...
>
>I don't want to sound flip on this subject, but I sure like the single
>braking system on my Mk1 Spit. It makes repairs very simple and no
>problematic balance mechanism to recalibrate.
>
>If I could just keep doors on it.........
>
>Joe Curry
>
>Dennis F. Kimberlin wrote:
>>
>> Andrew Mace wrote:
>> >
>> > On Fri, 1 May 1998, Andrew Dixon wrote:
>> >
>> > > On the topic of the PDWA, I firmly believe one should go through the
>> > > centering technique whichever method one uses. It's purpose is to
shift
>> > > braking power from a leak in the front or rear.
>> >
>> > Well, no, not really. The Pressure Differential Warning Actuator
(Warning
>> > being the keyword here) only serves to indicate a problem in the
system.
>> > If there is any "fail-safe" at all in the braking system relative to
>> > shifting braking power from a leak, that would be in the dual master
>> > cylinder (I think that is what the "tipping valve" does.)
>> >
>> > > When you bleed the brakes
>> > > you create a leak and I've found any method causes the PDWA to
shift.
>> >
>> > Again, you don't create a leak when the PDWA shifts. All you do is
>> > activate the warning light circuit by means of a mechanical shift of bits
>> > within the PDWA. Perfectly normal brakes can be experienced with the
PDWA
>> > "uncentered." And it is quite possible, although not always easy, to
>> > bleed brakes successfully without disturbing the PDWA.
>> >
>> > I'll grant you that sometimes it is as hard or harder to recenter the
PDWA
>> > than it is to get it "uncentered" during bleeding. And I'll also grant you
>> > that when the PDWA itself DOES start to leak, you've got a whole new
set
>> > of problems!
>> >
>> > --Andy
>> >
>> > * * * * * * * * * * * * * * * * * * * * * * *
>> > * Andrew Mace, President and *
>> > * 10/Herald/Vitesse (Sports 6) Consultant *
>> > * Vintage Triumph Register *
>> > * amace@unix2.nysed.gov *
>> > * * * * * * * * * * * * * * * * * * * * * * *
>> I agree with Andy. Same issue on my SPIT; brakes are great after a
>> complete rebuild, but could never get the !@#$%PDWA to recenter. The
>> bleeding went without a hitch on each cornor.
>> One good thing, I guess....got a pretty red light glowing when we run.
>> I'm told there is a manual method to recenter the thing, i.e. remove the
>> end cap nuts, but haven't screwed the courage up to do that yet.
>> Anyone ever do it that way?
>>
>> Dennis
>> 75 SPIT
>> Omaha, NE
>
>--
>"If you can't excel with talent, triumph with effort."
>
> -- Dave Weinbaum in National Enquirer
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