[Vwdiesel] Proportioning Valve

[James Hansen]

Well, the proportioning valve reduces pressure to the rear brakes when
unloaded- when the body is higher.
You run the risk of the rears being easier to lock up when lightly loaded,
or when less traction (ice, wet, etc)
That said, I've always found the VW rears to be a little underbiased on
braking anyway, so it might be worth a try.
To tell you to JUST bypass the valve because it's an easy solution isn't
necessarily the best advice, but as long as you think it through and pay
attention when you are testing it with no load, wet road, etc, it should be
okay.  If you just can't find a valve, they have to be out there.  Hayden
might even have one in the sea of parts he's brought on himself. :-)   
When you test drive it without the valve, with fresh brakes, try some panic
stops.  That's when it counts.  If the rears lock way before the fronts, it
might be an issue when unloaded, and could lead to unintended consequences.
An accident cause by bad brakes is no accident.  
-james

> -----Original Message-----
> From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]
> On Behalf Of Gerald Hughet
> Sent: Thursday, April 01, 2010 8:35 PM
> To: vwdiesel vwfans dot com
> Subject: [Vwdiesel] Proportioning Valve
> 
> 
> Good Evening,
> 
> 
> 
> I need to do some major brake work on my 85 Quantum Diesel.  I prefer
> that as my primary vehicle with a Jetta or two as backup vehicles.
> 
> 
> 
> There is a pretty good leak at the proportioning valve.  I haven't
> found a source for replacement parts and advice received thus far is to
> just bypass that valve.
> 
> 
> 
> Does anybody have any insight into this problem?
> 
> 
> 
> Thanks,
> 
> 
> 
> Gerry
> 
> 
> 
> Indianapolis
> 
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