Proportioning valves and residual valves are not the same thing and they
have different purposes.
I don't know what exactly is in any given combo valve. My own experience
was that the wrong residual valve caused my disk brakes to stay applied once
I used them the first time.
Steve@OldSub.com
www.OldSub.com
----- Original Message -----
From: "Tom Cooper" <tntcoop@earthlink.net>
To: "'Steve Hanberg'" <Steve@oldsub.com>; "'Mike Sergesketter'"
<mserges@psci.net>; <oletrucks@autox.team.net>
Sent: Saturday, August 26, 2006 6:12 PM
Subject: RE: [oletrucks] Proportioning Valve Question
>I didn't realize there was a drum proportioning valve and a disc
> proportioning valve, but it makes since now that I think about it. I
> would assume that there is a combination valve that will take drum and
> disc? The valve I am going to use when I get to that stage of my build
> is from a 1981 Camaro. I need to make sure which lines from the valve go
> to the front discs and which go to the back drums? Maybe that is
> something Mike could check. Thanks for the valve information.
> Tom in SC
>
>
> -----Original Message-----
> From: owner-oletrucks@autox.team.net
> [mailto:owner-oletrucks@autox.team.net] On Behalf Of Steve Hanberg
> Sent: Thursday, August 24, 2006 12:17 AM
> To: Mike Sergesketter; oletrucks@autox.team.net
> Subject: Re: [oletrucks] Proportioning Valve Question
>
> It sounds like you might have a drum brake residual valve when you
> should
> have a disk brake residual valve.
>
> Drum brakes need a residual valve that holds about 10 lbs pressure to
> keep
> some tension on the shoes. Disk brakes should have only 2 lbs residual
> valve and if you have 10 lbs it will be enough to keep the pads against
> the
> disks constantly once applied.
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