21 - Turbocharger, G-Charger: Turbocharger: Turbocharger

WARNING: This page is about a different car, 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.

NOTE:

Observe cleanliness rules Turbocharger .
Secure all hose connections using hose clamps appropriate for the model type.
Hose connections and charge air system hoses must be free of oil and grease before installing. Sealing ring and sealing surfaces must only be lightly oiled with connector couplings → Hose connections with connection couplings, assembly .
Charge air system must be properly sealed.
Replace self-locking nuts.

Fig 1: Identifying Spring-Type Clip Pliers VAS 5024 A

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Pliers for spring clamps VAS 5024A or Hose clamp pliers V.A.G 1921 are recommended for installing spring clamps.
Add oil to turbocharger through oil feed line connecting piece.
After installing turbocharger, let engine idle for approx. 1 minute without increasing engine speed. This ensures adequate oil supply to the turbocharger.

Assembly of hose connections with connection couplings → Hose connections with connection couplings, assembly