Rules of cleanliness

WARNING: This page is about a different car, the 2006 Audi A4, 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.

When working on turbocharger, carefully observe the following Rules of Cleanliness:

Thoroughly clean all connections and the surrounding area before disconnecting.
Place parts that have been removed on a clean surface and cover. Use lint-free cloths only!
Carefully cover over opened components or seal, if repairs are not carried out immediately.
Only install clean components: Only unpack replacement parts immediately prior to installation. Do not use parts that have been stored loose (in tool boxes etc.)

Transport and protective packaging and sealing caps are to be removed only immediately prior to installation.
During repairs, clean oil from connections and hose ends.
When the system is open: Avoid working with compressed air if possible. Do not move vehicle unless absolutely necessary.