Hydraulic Leak

john clarke johnclarke303 at hotmail.com
Mon Feb 4 12:56:33 EST 2002


Thanks,
Checked the archives--for some reason never chose "volcano" first time
around :-)  Was hoping it was just the cap as the pump is only 2.5 years old
(reman. ZF).  Still six months left on the warranty--should I have the car
down for a week or more while I send it back or just re-seal it myself?  I
guess what I'm getting at is "What is the success rate of re-sealing the
pump?"  I ask because I had a garage do it for me when the pump started
leaking 2.5 years ago and it didn't cure that problem.  Any idea of the P/N
for the seal kit?
TIA
John
'90 90Q20v


>From: Iain Mannix <mannix at rmsolo.org>
>To: john clarke <johnclarke303 at hotmail.com>
>CC: quattro at audifans.com
>Subject: Re: Hydraulic Leak
>Date: Mon, 4 Feb 2002 08:39:47 -0700 (MST)
>
>Guess it is my turn - search for "volcano" in the archives.
>
>I just went through this with my 5k - basically, the pump is
>sucking air, which pressurizes the return line to the reservoir,
>which in turn foams/cavitates/makes Pentosin come out the cap.
>It seems that resealing the pump or replacing the pump is the
>only option; it can get pretty bad, IME(two pumps in a short
>period of time) - from slight leakage to a nice sheen of P on
>the underside of the hood.
>
>I'd guess that sealing the cap is going to force it to find a
>different way out.  Not sure what'll happen.  Resealing the
>pump is fairly easy, and the P/N can probably be found in the
>archives.
>
>
>Iain(give me a week, will be able to offer tips on what to do
>if you blew off fusing your radiator fan in a 44....)
>
>On Mon, 4 Feb 2002, john clarke wrote:
>
> >
> > Losing Pentosin through hole in cap on fluid reservoir (P/N 443 422
>391A).
> > Hole is there to permit movement for the plastic rod connected to the
> > styrofoam float.  I have an old brake master cylinder cap put on for the
> > moment while a new one is on order.  The local dealer had no luck
>entering
> > the above part number and is bringing in the one listed for the car.
>Any
> > BTDT's on this kind of leak?  Is it common?  Maybe a seal is worn or is
> > there a restriction bumping up the fluid pressure and this is a weak
>link?
> > Also, the float  rod appears to trigger a switch on top of the cap to
>warn
> > of low fluid level--it's obviously disconnected now but I'm not getting
>any
> > warning lights on.
> > TIA
> >
> > John
> > '90 90Q 20v
> >
> >
> > _________________________________________________________________
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