Overview - Cylinder Head: Notes

Fig 1: Exploded View Of Cylinder Head

Courtesy of AUDI OF AMERICA, LLC

1. Cylinder Head Gasket
   • Replacing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
   • Installed position: the part number faces the cylinder head
   • Change the coolant and engine oil after replacing
2. Bolt
   • 25 Nm
3. Engine Lifting Eye
4. Bolt
   • Replace after removing.
   • Loosening. Refer to Fig 2 .
   • Tightening specification and sequence. Refer to Fig 3.
5. Cylinder Head
   • Removing and Installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
   • Checking for distortion. Refer to Fig 2 .
   • Change the coolant and engine oil after replacing
   • Do not rework the upper sealing surface
   • Only replace together with the cylinder head cover
   • Check Valve, Removing and Installing. Refer to CHECK VALVE, REMOVING AND INSTALLING .
6. Bolt
   • Replace after removing.
   • Loosening. Refer to Fig 2 .
   • Tightening specification and sequence. Refer to Fig 3.
7. O-Ring
   • Only 2.0L Engine
   • Check for damage
   • No replacement part: included in the cam adjustment actuator delivery package
   • Coat with engine oil
8. Cam Adjustment Actuator
   • Only 2.0L Engine
   • Removing and Installing. Refer to CAM ADJUSTMENT ACTUATOR, REMOVING AND INSTALLING .
9. Bolt
   • 5 Nm
   • Only 2.0L Engine
10. O-Ring
    • Replace after removing.
    • Lubricate with engine oil
11. Plugs
    • 5 Nm
    • with ball head for the engine cover
12. Cap
    • With seal
13. O-Ring
    • Replace after removing.
    • Lubricate with engine oil
14. Plugs
15. to Intake Manifold
16. Heat Shield
17. Bolt
    • 20 Nm
18. Bolt
    • 20 Nm
19. To the Intake Manifold/Turbocharger
20. Bleed Pipe
21. O-Ring
    • No replacement part
22. Seal
    • No replacement part
23. Engine Cover
24. Bolt
    • Tightening specification and sequence. Refer to Figure .
25. Oil Separator
    • On the cylinder head cover
    • Overview. Refer to OVERVIEW - CRANKCASE VENTILATION .
26. Seal
    • Replace if damaged
27. Seal
    • Replace if damaged
28. Vacuum Pump
    • Removing and installing. Refer to the appropriate service information in OVERVIEW - VACUUM PUMP / OVERVIEW - ELECTRIC VACUUM PUMP / BRAKE ELECTRIC VACUUM PUMP, REMOVING AND INSTALLING / VACUUM PUMP, REMOVING AND INSTALLING
29. Bolt
    • Tightening specification. Refer to the appropriate service information in OVERVIEW - VACUUM PUMP / OVERVIEW - ELECTRIC VACUUM PUMP / BRAKE ELECTRIC VACUUM PUMP, REMOVING AND INSTALLING / VACUUM PUMP, REMOVING AND INSTALLING .
30. Connection
31. Retaining Plate
32. Bolt
    • 9 Nm
33. O-Ring
    • Replace after removing.
    • Coat with coolant
34. Engine Lifting Eye
35. Bolt
    • 25 Nm
36. Bolt
    • Tightening specification OVERVIEW - IGNITION SYSTEM - Bolt
37. Camshaft Position Sensor -G40-
    • Overview. Refer to OVERVIEW - IGNITION SYSTEM .
38. Partition Plate
39. O-Ring
    • Replace after removing.
    • Lubricate with engine oil

Fig 2: Loosening Sequence For Cylinder Head

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows-.

-- Loosen the cylinder head bolts in the sequence -1 to 10-.

Fig 3: Cylinder Head Bolts Differences

Courtesy of AUDI OF AMERICA, LLC

• Replace the bolts that were tightened with an additional turn after removing them.

• Bolt differences: 
• Bolt without collar
• Bolt with collar -arrow-