Position of shims
WARNING: This page is about a different car, the 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
S1 - Adjustment shim for ring gear in transmission housing cover
S2 - Adjustment shim for ring gear in transmission housing
S3 - Adjustment shim for drive pinion in transmission housing
S4 - Adjustment shim for drive pinion in bearing plate