CV joint - potential problem

[Ed Kellock]

I was going to say something similar.  A friend and I disassembled and
cleaned one of his CVs on his urS4 and when the CV was reassembled, it would
bind once the axle nut was tightened fully.  Turns out we had it reassembled
with one part backwards.  I don't recall the scenario very well, but sounds
like it must have been the cage that we had backwards.

Ed
 


-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of NIck Miller
Sent: Sunday, June 13, 2010 8:28 PM
To: Radek
Cc: quattro at audifans.com
Subject: Re: CV joint - potential problem


You probably put it all back together wrong is all.  Don't worry about it
too much.  I do believe the actual joint on the V8 will be the same as the
90, but only if they are both auto/auto.  I'd take the CV for the 90 apart
again and relate it to the V8 one if you wish to take that apart.

Basically, you'll notice that the "cage" on the outside has a raised lip on
one side, this is supposed to go outwards so that the balls on the inner
cage don't fall out, and the same for the inner cage.  Basically, they have
that lip for retention and they go together opposite of each other.  Tough
to explain, but that's what you have to look for when comparing them, and
try and use the V8 one as a blue print.

On that note, I probably wouldn't reuse a joint that had dried up grease in
it.  The ball bearings are surely shot, and those things have factory
tollerances unlike anything else you'll ever see, I believe at .0001 in
relation to what they go into.  I may be off, but it sounds right, that's
the range for BBs in a turbocharger which spin up to about 100krpm, and a CV
axle certainly doesn't go that fast, but its still a high speed unit.

Anyway, hope it helped.  I have a few sets in my garage but they are just
recently rebuilt, not too sure I want to take them apart for reference.

~Nick
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