Re: Clunking Drive shaft

["Fred Munro" <munrof@isys.ca>]

Hi John;

    If you try turning on pavement with the centre diff locked, it stresses
the drivetrain because the front end of the car is rolling through a larger
radius than the rear end and the locked centre diff is forcing them to roll
over the same distance. This usually results in scrubbing the front end
around the turn and feels quite odd. With the centre diff unlocked, the
front and rear axle sets can turn at the appropriate speed (that's why the
centre diff is there).
    That said, you shouldn't get the loud clunking, but the stress on the
driveshaft may be what is causing it. Is the driveshaft properly aligned? As
I recall, the Bentley recommends using a special jig to align the driveshaft
on installation.

HTH

Fred Munro
'91 200q  281k km

----- Original Message -----
From: JOHN URIBE <jju@faustel.com>
To: <quattro@audifans.com>
Sent: Thursday, September 30, 1999 11:16 AM
Subject: Clunking Drive shaft


> Over the summer I had my driveshaft rebuilt (cv joints, center bearing).
The
> other day we had a good rain, I decided to lock the center diff. to see
how
> well it was working since winter is approaching. When i turned a corner,
the
> was a horrible clunking from under the car. Sounded like the drive shaft
was
> hitting something. This is my first Audi, but I can't believe this is
normal. Any
> ideas on what was happening?
>
> John Uribe
>