Oil check valves, oil separator, component overview
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.
1 - O-ring
- Replace
2 - Oil check valve, 20 Nm
- For oil supply to right cylinder head
3 - 9 Nm
4 - Oil separator
5 - Gasket
- Replace
6 - Cover
- With connection for crankshaft housing ventilation
- To remove, remove upper part of intake manifold and left and right lower parts of intake manifold → 24 - FUEL INJECTION SYSTEM
7 - O-ring
- Replace
8 - Gasket
- Replace
9 - 6 Nm
10 - Crankcase ventilation hoses
- Removing and installing → Crankcase ventilation hoses, not for US vehicles, removing and installing
CAUTION:
On US vehicles, crankcase ventilation must not be removed.
11 - 9 Nm
12 - Oil check valve, 20 Nm
- For oil supply to left cylinder head
13 - O-ring
- Replace