Front Differential Issues

[Geldgrube]

Hi all. I'm having problems with my front differential again on my 2003 C4S.

At 50k kilometers, I replaced the right carrier bearing (the bearing for the flange connecting the half-shaft). At 80k, I replaced the left side. I'm at 110k now and it looks like the left side is gone AGAIN....it's leaking as well. My Indy says that there's likely a problem with the way in which the bearing is fitting into the diff housing so replacing the bearing again won't help. He was actually quite surpised because he hasn't seen a lot of AWD probelms on the C4 or the turbos. Anyone out there have similar issues and more importantly, do you know where I can get a used diff at a reasonable price (I'm checking the usual parts places like Oklahoma, German Auto and, as a last resort L.A. Dismantlers).

Thanks, Ron

[dlipka]

No such problems on either my C4 or TT - I have had bleeder valve issues (it blocks) and oil is pushed out past the seals when it heats up and pressurises the case.

I would try ebay for a diff....

[Geldgrube]

Interesting...that's something I've never considered. Given that I've replaced both seals, I'm wondering whether that's the root cause of my problem. How can I determine whether the bleeder is working properly?

Thanks