Overview - Crankcase Ventilation

Fig 1: Exploded View Of Crankcase Ventilation

Courtesy of AUDI OF AMERICA, LLC

1. Cylinder Head Cover
2. Hose
   • To the EVAP Canister Purge Regulator Valve 1 -N80-
3. Seal
   • Not available separately; replace if leaking -item  : Hose or damaged
4. Hose
   • For the crankcase ventilation
   • To the turbocharger
5. Tank Ventilation Pressure Sensor 1 -G950-
   • Removing and Installing. Refer to Tank Ventilation Pressure Sensor 1 -G950-, REMOVING AND INSTALLING .
6. O-Ring
   • Not available separately; replace if leaking -item  : Tank Ventilation Pressure Sensor 1 -G950- or damaged
7. Bolt
   • Tightening Specifications and Sequence. Refer to Fig 2.
   • Thread cutting
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-.