DeTomaso Mailing List: April 99, Message #137

-- [ From: Forest Goodhart * EMC.Ver #2.5.3 ] --

It stops leaking because the reservoir is drained.If you refill the
reservoir you will find that it continues to leak back out. --------
REPLY, Original message follows --------

Date: Monday, 05-Apr-99 10:15 AM

From: Asa Jay Laughton         \ Internet:    (asajay@concentric.net)
To:   pantera forum            \ Internet:    (detomaso@realbig.com)

Subject: Re: Differential pressure switch

FOREST W GOODHART wrote:
> 
> -- [ From: forest * EMC.Ver #2.5.3 ] --
> 
> I just can't let this misconception go on any longer. The brake
> differential pressure switch is just that, a switch. It does not block
> flow from a broken or ruptured system.

Whoops, I gotta disagree with that.  I had just such a failure and the
Diff/Press valve (switch) did just like it was supposed to: sensed the
pressure difference, moved to that side, the BRAKE light came on and I
stopped leaking fluid out the rear wheel cylinder.  For all intents and
purposes, the flow of fluid was stopped to the rears.  And according to
my internal mechanical diagrams... it's supposed to do just that.

The point made about really having to slam the brakes to get it to
center once the repairs have been made is TRUE.  Once I got the system
fixed (and rebuilt the diff/press switch) the system still showed a
failure.  Then I read the factory manual which recommended "slamming"
the brake pedal... so I did.  Viola!! the light went out, and I had
fantastic braking again.

I for one, would not take the switch out, I'd disassemble it, clean it,
and rebuild it.

FWIW,
Asa Jay



-- 
Asa Jay Laughton
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net/~Asajay/purchase.shtml

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