Overview - Crankcase Ventilation

WARNING: This page is about a different car, the 2018 Audi A6 Quattro, 2017 Audi A6 Quattro, and 2016 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Crankcase Ventilation Components

Courtesy of AUDI OF AMERICA, LLC

Seal
- Replace after removing
Oil Separator with Cover
- With connection for crankcase ventilation
- Removing and installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
Bolt
- 9 Nm
O-ring
- Replace after removing
- Market-specific North America (quantity: 2)
Connection
- For the crankcase ventilation
- Installed position. Refer to Fig 2
O-ring
- Replace after removing
- Market-specific North America (quantity: 2)
Bolt
- 9 Nm
O-ring
- Replace after removing
Crankcase Ventilation Hose
- To the cylinder head covers
- Removing and installing. Refer to CRANKCASE VENTILATION HOSE, REMOVING AND INSTALLING .
Bolt
- 2.5 Nm
O-ring
- Replace after removing
Crankcase Ventilation Hose
- To the air duct pipe
- With Crankcase Ventilation Shut-Off Valve -N548-
- Removing and Installing. Refer to Crankcase Ventilation Shut-Off Valve -N548-, REMOVING AND INSTALLING .
Hose Clamp
- Installed depending on the version. Refer to the parts information for allocation.
Bolt
- 2.5 Nm
Bracket

Fig 2: Crankcase Ventilation Support, O-Rings And Positioning Slot

Courtesy of AUDI OF AMERICA, LLC

-- Install the crankcase ventilation connector -1- with new O-rings into the oil separator cover.

Installed position: the tab -2- must engage into the guide -arrow-.