[s-cars] This car doesn't like me..

[Fred Munro]

Ivan;

Odd that your flange was grooved; I've replaced a number of these seals on
high mileage cars and the flanges have always been in perfect condition.

However, seeing that you have a grooved flange, the only fix is to replace
the flange or install the seal at a different depth so the seal lip is not
running in the groove. I lube the seal lips with gear oil and pack synthetic
grease in the groove between the two seal lips to make sure the new seal is
well lubed on initial run-in.

And yes, the seal has to be square in the bore.

HTH

Fred Munro
'94 S4
'97 S6


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com]On Behalf Of Ivan Demkovitch
Sent: February 2, 2007 11:20 PM
To: s-car-list at audifans.com
Subject: [s-cars] This car doesn't like me..


List,

In October 2005 (15k miles ago) I replaced differential seals.

I did a lot of work targeted on eliminating any leaks which I had plenty..

Now I thought somebody parked on my driveway because I found few oil drops.
Nope.. Wrong. After parking in garage I found nasty GL5 drops on my nice
epoxy floor.
I was pretty sure it's driveshaft seal on differential (the one I did not
replace). But it's indeed LEFT seal.

So, 15k miles later it needs to be replaced again. What was it? I'm thinking
combination of not exact depth and not precisely flat installation.

If I polish flange AND make special tool to install seal perfectly square,
should it fix it? Or new flange is the only way to deal with situation? I
recall that groove on a flange from original seal was pretty deep.

Thanks,
Ivan

93 S4 (with no leaks until now)
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