now that we know it's a single piston sliding caliper ...........
first thing you check is if it's sliding properly and smoothly on the guide
pins.
If the piston is outboard, and the caliper doesn't slide in its
mounts........
and the outer pad wears excessively, then that would point to a caliper not
sliding.
It slides on guide pins.  They can get rusty, stuck etc.
Scott
www.turbovans.com
oh, I have good take-off syncro calipers, btw.

----- Original Message -----
From: "Mike Collum" <collum@VERIZON.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, October 03, 2008 8:28 AM
Subject: Re: subject Re: Brake problem

> Mike,
>
> I've never worked on the "Modern" brake systems.  Only the '85 and older
> with 2 pistons.
>
> On my '85 Westy, the inboard piston on the driver's side froze up and
> wasn't moving.  The outboard pad wore much faster and was pushing the
> rotor over against the frozen pad and was wearing it only a little.
> Strange that there was no pulling or other indication that something was
> amiss.  Rather than trying to rebuild that caliper, I just replaced it.
>
> My best guess is that your caliper isn't working properly internally and
> isn't pushing one pad as hard against the rotor as the other.
>
> Mike
>
>
>
> mwmiller@cwnet.com wrote:
> > 87 syncro