[DeTomaso] brake system question

Forest Goodhart forestg at att.net
Fri Sep 24 20:57:42 EDT 2010


There is only a single line from the shuttle valve to the front brakes. The 
proportioning valve is where the two lines separate for each wheel. The rears 
are also a single line that tees near the rear for the back brakes. Does the 
pull get worse with heavier pedal pressure?
Forest




________________________________
From: "MikeLDrew at aol.com" <MikeLDrew at aol.com>
To: justingreisberg at hotmail.com; jderyke at aol.com; detomaso at realbig.com
Sent: Fri, September 24, 2010 5:28:30 PM
Subject: Re: [DeTomaso] brake system question


In a message dated 9/15/10 5 21 17, justingreisberg at hotmail.com writes:


> but what bothers me, just like the rest of you, is the pull to one side.  
> My theory has been persistent air in the caliper since it is a brand new 
> wilwood.  i keep bleeding it, but no change.  i will look at the whole thing 
> more closely this weekend. 
> 

It is heretical to some to suggest that the shuttle valve (which displaces 
in the event of differential pressure) might block flow or pressure to one 
or more calipers.  But some others believe that it can contribute to 
problems like those you are facing.  I don't know for sure one way or the 
other.  

Is your red idiot light on the dash illuminated?  (And is the wire hooked 
up to the switch on the shuttle valve?)

The valve is located in the brass junction block under the master, on the 
trunk floor, through which the brake lines pass, and the brake light switch.

Mike
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