Differential shaft, checking for wear

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 Audi A4, 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Differential removed
Shaft seal removed → Differential shaft seal, replacing .

Fig 1: Identifying Differential Shaft Sealing Surface

GW00019607

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Check differential shaft sealing surface for scratches or damage.

The differential shaft sealing surface must not be scratched or scored.

NOTE:

Even the smallest scratches or damage on the differential shaft sealing surface will cause lack of seal, even with a new shaft seal.