Dave:
Thanks for the clarification. I took the name off the TRF's parts catalog
since I wasn't exactly sure of the name, and they refer to it as a valve.
Your explanation makes sense since there would allot of folks with hydraulic
and thus braking problems if the switch caused such failure. TA
Scott Suhring
Mechanicsburg, PA
'70 TR6
'59 TR3
-----Original Message-----
From: Dave1massey@cs.com [mailto:Dave1massey@cs.com]
Sent: Tuesday, April 05, 2005 8:48 AM
To: suhringtr36@comcast.net; triumphs@autox.team.net
Subject: Re: TR6 Pressure Differential
In a message dated 4/4/2005 9:45:15 PM Central Standard Time,
suhringtr36@comcast.net writes:
I recently rebuilt by brake master cylinder on my '70 TR6 and as usual, am
struggling to get the bleeding done. I started to wonder (yes, that gets
me
in trouble) about my Pressure Differential Valve.
First of all, lets get the nomenclature right. It is a PDWA, Pressure
Differential Warning Actuator. It is not a valve. I stress this because
many people mistakenly believe it will shut off the hydraulic pressure to
the bad brake circuit. It does not. The only thing this does is detect a
pressure differential between the two sides and light the warning light on
the dash.
As such, as Andy said, as long as it doesn't leak, it has no effect on the
hydraulic system. It is just a sensor.
Dave
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