When you stopped the car before jacking it up to test the wheel rotation the
pressure was retained by the valve from that last braking effort. If you
just pound your fist on the top (side) of the tire that will knock the pads
back a bit and everything will be just dandy. The same thing happens when
the car is running down the road, the bumps and side effort onto the tread
keeps the pads back. The valve wants to help you not get pad knock-back. It
works, kind of.
----- Original Message -----
From: "Richard Taylor" <tarch@bellsouth.net>
To: "'Bill Babcock'" <BillB@bnj.com>; <WEmery7451@aol.com>;
<markvaden@gmail.com>; <fot@autox.team.net>
Sent: Friday, November 02, 2007 12:46 PM
Subject: Re: [Fot] dual circuit brakes on a tr4
> Bill,
> For those of us who don't know a residual valve from Shinola, what's it
> do?
> Although I've been told it is normal, I have never been able to get the
> front wheels of my TR-4 to rotate absolutely freely (while off the ground)
> without some pad drag.
>
> Richard
> atlanta
>
> It's not a balance vbalve, it's a residual pressure valve.
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