Overview - Charge Air System, 3.0L Engine-Side Version 2

1. Air Duct Pipe
2. Bolt
   • Tightening Specifications and Sequence. Refer to Figure.
   • Thread cutting
   • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
3. Bolt
   • Tightening Specifications and Sequence. Refer to Figure.
   • Thread cutting
   • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
4. O-Ring
   • Not available separately; replace if leaking -item  ) OVERVIEW - CHARGE AIR SYSTEM, 3.0L ENGINE-SIDE VERSION 2 - List Item: Charge Air Pressure Sensor -G31- or damaged
5. Charge Air Pressure Sensor -G31-
   • Removing and Installing. Refer to Charge Air Pressure Sensor -G31-, REMOVING AND INSTALLING .
6. Bolt
   • 5 Nm
7. Bolt
   • Tightening Specifications and Sequence. Refer to Figure.
   • Thread cutting
   • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
8. Upper Air Guide Pipe
   • Removing and installing. Refer to UPPER AIR DUCT PIPE, REMOVING AND INSTALLING .
9. Bolt
   • Tightening Specifications and Sequence. Refer to Figure.
10. Lower Air Duct Pipe
    • Removing and installing. Refer to UPPER AIR DUCT PIPE, REMOVING AND INSTALLING .
11. Bolt
    • 9 Nm
12. Seal
    • Replace after removing.
13. Intake Manifold with Crankcase Ventilation Hose
    • The crankcase ventilation hose cannot be separated from the intake manifold. Note the information:
      • Crankcase Ventilation Hose on Intake Manifold, Rest of World Vehicles. Refer to the information below.
      • Crankcase Ventilation Hose on Intake Manifold, USA Vehicles. Refer to the information below.
    • Removing and Installing. Refer to INTAKE MANIFOLD, REMOVING AND INSTALLING, 3.0L ENGINE, AUDI A8 .
14. Bolt
    • 9 Nm
15. Seal
    • Replace after removing.
16. Turbocharger
    • Overview. Refer to OVERVIEW - TURBOCHARGER, 3.0L ENGINE .
17. Intake Air Temperature Sensor -G42- /Manifold Absolute Pressure Sensor -G71-
    • Removing and Installing. Refer to Intake Air Temperature Sensor -G42- /Manifold Absolute Pressure Sensor -G71-, REMOVING AND INSTALLING .
18. Bolt
    • 5 Nm
19. O-Ring
    • Not available separately; replace if leaking -item  ) OVERVIEW - CHARGE AIR SYSTEM, 3.0L ENGINE-SIDE VERSION 2 - List Item: Intake Air Temperature Sensor -G42- /Manifold Absolute Pressure Sensor -G71- or damaged
20. Intake Manifold
    • Overview. Refer to OVERVIEW - INTAKE MANIFOLD .
21. Seal
    • Replace after removing.
22. Bolt
    • Tightening Specifications and Sequence. Refer to Figure.
    • Thread cutting
    • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
23. Seal
    • Replace after removing.
24. Throttle Valve Control Module -GX3-
    • Removing and installing. Refer to THROTTLE VALVE CONTROL MODULE -GX3-, REMOVING AND INSTALLING
    • Cleaning. Refer to Throttle Valve Control Module -GX3-, CLEANING .
25. Seal
    • Replace after removing.

Crankcase Ventilation Hose on Intake Manifold, Rest of World Vehicles 

Courtesy of AUDI OF AMERICA, LLC

The crankcase ventilation hose -2- cannot be removed from the air duct pipe -1- without damage.

• Replace the crankcase ventilation hose -2- after removing it.
• When installing, make sure the connector coupling clicks into place and does not sit crooked on the air duct pipe support -1-.

The crankcase ventilation hose -2- cannot be removed from the intake manifold -1- without damage.

• Replace the crankcase ventilation hose.
• When installing, make sure the connector coupling clicks into place and does not sit crooked on the intake manifold support -1-.

Crankcase Ventilation Hose on Intake Manifold, USA Vehicles 

Courtesy of AUDI OF AMERICA, LLC

The crankcase ventilation hose -2- must not be disconnected from the intake manifold -1- on USA vehicles.

• The replacement part (refer to Parts Information is supplied with the crankcase ventilation hose -2- connected to the intake manifold -1-.

Upper Air Duct Pipe - Tightening Specification and Sequence 

-- Tighten the bolts in the steps shown in the sequence:

Step	Screws	Procedure/Tightening Specifications
1.		Bringing the air duct pipe in the installation position
2	-1-	Replace and install all the way by hand.
3	-2 through 7-	Position and install by hand all the way by doing this the bolts find the previous threads
4.	-1-	9 Nm
5.	-2 through 7-	5 Nm

Throttle Valve Control Module GX3 - Tightening Specification and Sequence 

-- Tighten the bolts in steps:

Step	Screws	Procedure/Tightening Specifications
1.		Bring the Throttle Valve Control Module -GX3- with the air duct pipe in the installation position
2.	-1 through 5-	Position and install by hand all the way by doing this the bolts find the previous threads
3.	-2 to 5-	5 Nm
4.	-1-	5 Nm