Cylinder Head And Cylinder Head Cover Overview

Fig 1: Identifying Cylinder Head And Cover, Assembly Overview

Courtesy of AUDI OF AMERICA, LLC

1. Cylinder Head Gasket
   • Replace
   • After replacing, change engine oil and coolant.
2. Cylinder Head
   • Removing and Installing, refer to CYLINDER HEAD, REMOVING AND INSTALLING .
   • Check for distortion, refer to Fig 4.
   • After replacing, change engine oil and coolant.
3. Lifting Eye
4. Bracket
   • For electric wires.
5. Bolt
   • 23 Nm
6. Cylinder Head Cover Gaskets
   • Replace if damaged.
7. Cylinder Head Cover
   • Removing and Installing, refer to CYLINDER HEAD COVER, REMOVING AND INSTALLING .
8. Bolt
   • With a spacer sleeve and seal.
   • Replace if damaged.
   • Tightening sequence, refer to Fig 2.
9. Ignition Coil
   • Removing and Installing, refer to IGNITION COILS .
10. Cover
11. Filler Cap Seal
    • Replace if damaged.
12. Bolt
    • Loosening sequence, refer to CYLINDER HEAD, REMOVING AND INSTALLING .
    • Replace
    • Tightening sequence, refer to Fig 3.
13. Lifting Eye
14. Bracket
    • For electrical wire.
15. Bolt
    • 23 Nm
16. Bolt
    • 10 Nm
17. Coolant Connection
18. Seal
    • Replace

Fig 2: Cylinder Head Cover Bolt Loosening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts to 10 Nm in the following sequence: -1 to 17-.

Fig 3: Cylinder Head Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten bolts in 4 stages in -1... 20- sequence as follows:

-- Tighten bolts by hand.

-- Partially tighten the bolts to 30 Nm.

-- Tighten the bolts to 50 Nm.

-- Tighten an additional 180° (¹ /₂ turn).

Fig 4: Checking Cylinder Head For Distortion

Courtesy of AUDI OF AMERICA, LLC

-- Measure at several places with straight edge and feeler gauge.

Permissible distortion:

• Maximum 0.05 mm.