Overview - Crankcase Ventilation

Fig 1: Exploded View Of Crankcase Ventilation Components

Courtesy of AUDI OF AMERICA, LLC

1. Cylinder Head Cover
2. Hose
   • To the EVAP Canister Purge Regulator Valve 1 -N80-
3. O-Ring
   • Replace if damaged or leaking
4. Hose
   • For the crankcase ventilation
   • To the turbocharger
5. Tank Ventilation Pressure Sensor 1 -G950-
   • Equipped on some models
   • Removing and Installing. Refer to Tank Ventilation Pressure Sensor 1 -G950-, REMOVING AND INSTALLING .
6. O-Ring
   • Replace if damaged or leaking
7. Bolt
   • thread cutting
   • Tightening Specifications and Sequence. Refer to Fig 2.
8. Oil Separator
   • Removing and Installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
9. Seal
   • Replace after removing

Oil Separator - Tightening Specifications and Sequence

Fig 2: Oil Separator - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

Existing threads:

-- Tighten the bolts to 8 Nm in the sequence -1 to 7-.

New tapping threads:

-- Install the bolts to 11 Nm in the sequence -1 to 7-.