UrS4 issues

[jlandsverk at tds.net]

I had this same issue with my '91 90q 20v.  The "20v List" procedures for this are a little different from what I've read here.  The main divergence being the use of Pentosin to lube the o-ring.  Many 20v'ers were not successful using this method.  

Instead, we lubed the 0-ring with high pressure grease.  The torque required to seat the o-ring will disfigure it if it's not properly lubed.  Bathing it in G002000 for several hours may achieve the desired result though - never tried it.

I purchased the pump rebuild kit to get the o-rings (I think it comes with 2).  It was about $45.

Others have purchased a "2-018" ring made of Vitone as a replacement and have had good results.  A Denver company called Rocket Seals (http://www.rocketseals.com)sells them - you may be able to get them elsewhere as well.  

Caveat - this is for the PS pump on the 20v NA I-5 found in '90 and '91 in Coupes and 90 sedans.  I don't know about the fitment on others.

Joel L.

> 
> From: Charlie Smith <charlie at elektro.cmhnet.org>
> Date: 2005/01/30 Sun PM 08:51:00 CST
> To: iain.atkinson at tesco.net
> CC: Charlie Smith <charlie at elektro.cmhnet.org>, 
>         Quattro List <quattro at audifans.com>
> Subject: Re: UrS4 issues
> 
> Earlier, iain.atkinson at tesco.net wrote:
> > 
> > Hi folks
> > 
> > just would like some opinion on 2 outstanding items on the to do list.
> > 
> > 1. I have a minor leak out of the pas pump from one of these big 
> > cross headed screws, can you get the seals for these???
> 
> Yes, but it's cheap to replace the whole X plug.  See:
> 
>     http://www.elektro.com/~audi/hydraulic/
> 
> This has part numbers, and the NAPA part number for the drag link socket
> needed to loosen and tighten the plug.
> 
>     - Charlie
>