G-60 rebuild or?

[Ingo Rautenberg]

Bernie,  Thanks for the advice.  Will have to go the air route (caliper
removed from car) and avoid flying projectiles.

As to bleeding the system biennially (every two years), I'm already bleeding
the system biannually (twice a year).  Not to say how often it was done
before I bought the car or that tracking may have boiled the fluid ;-)

-Ingo

----- Original Message ----- 
From: "Bernie Benz" <b.benz at charter.net>
To: "Ingo Rautenberg" <i.rautenberg at waratap.com>
Cc: "200q20V mailing list" <200q20v at audifans.com>
Sent: Friday, February 04, 2005 12:23 PM
Subject: Re: G-60 rebuild or?


> Ingo,
>
> If the caliper is still attached to the brake hydraulics and loose from
its
> carrier, you can use the brake pedal, otherwise use air pressure.  Put a
> piece of wood across the caliper to catch the first to free piston before
it
> leaves its bore, or it will be across the room and you'll not get the
second
> one to pop.  If frozen as you describe, plan to overhaul all 4.  You'll
> agree after you see the insides of the first one.
>
> If the boots are good you don't need rebuild kits, just a good internal
> cleaning of all parts, seals and seal grooves.  Polish the chrome plated
> pistons with 600 grit paper.  I use a silicone fluid as assembly lube.
> Hereafter bleed the hydraulics biennially, to eliminate the problem.
>
> Bernie
>
>
>
> > From: "Ingo Rautenberg" <i.rautenberg at waratap.com>
> > Date: Fri, 4 Feb 2005 10:48:10 -0500
> > To: "UrqList" <urq at audifans.com>, "200q20v List" <200q20v at audifans.com>
> > Subject: G-60 rebuild or?
> >
> > Just replaced the seized right front G60 caliper on the Urq with one
from the
> > V8 and was hoping for words of wisdom.  I initially thought the carrier
pins
> > were frozen (usually the case) though I tend to lube them up and check
them
> > periodically.  Mine were fine.  The pistons were (are) stuck.  The boots
are
> > intact as far as I can see.  So what do I do?  Don't want to distort the
> > pistons by using vise-grips or the like...
> >
> > -Ingo
> > '91 200q20v...Slightly modified
> > '84 Tornado Red Urquattro Euro spec
> > '91 v8 quattro 5-Speed (not exactly stock) :-)
> > '91 V8 pearl (new addition)
> > http://hometown.aol.com/quattringo/index.html
> >
> >
> >
> >
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>


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