Overview - Cylinder Head

1. Cylinder Head Gasket
   • Replacing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
   • Installed position: the part number faces the cylinder head
   • After replacing an adaptation must be preformed. Refer to PERFORM ADAPTATIONS AFTER COMPONENT REPLACEMENT .
2. Alignment Pin
   • Quantity: 2
3. Cylinder Head
   • Removing and Installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
   • Checking for distortion. Refer to Fig 7.
   • Pay attention to the cylinder head cover pairing number and cylinder head. Refer to Fig 4.
   • Change the coolant and engine oil after removing and installing
   • After removing and installing or replacing an adaptation must be performed. Refer to PERFORM ADAPTATIONS AFTER COMPONENT REPLACEMENT .
   • Cap installation and installation position. Refer to Fig 8.
4. Bolt
   • Replace after removing
   • Loosening. Refer to Fig 2.
   • Tightening specification and sequence. Refer to Fig 3.
5. Heat Shield
6. Bolt
   • 9 Nm
7. O-Ring
   • Replace after removing
   • Coat with coolant
8. Bolt
   • 9 Nm
9. Connection
   • For coolant hose
10. Bolt
    • Replace after removing
    • Loosening. Refer to Fig 2.
    • Tightening Specifications and Sequence. Refer to Fig 3.
11. Bracket
12. Bolt
    • 9 Nm
13. Bracket
14. Bolt
    • 9 Nm
15. Bolt
    • 9 Nm
16. Connection
    • For coolant hose
17. O-Ring
    • Replace after removing
    • Coat with coolant
18. Engine Lifting Eye
19. Bolt
    • 10 Nm +90°
    • Replace after removing
20. Partition Plate
21. Engine Lifting Eye
22. Bolt
    • 10 Nm +90°
    • Replace after removing

Loosening the Cylinder Head

-- Remove the bolts -arrows-.

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

Cylinder Head - Tightening Specifications and Sequence

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

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

Step	Bolts	Tightening Specification/Additional Turn
1.	-1 through 10-	Install all the way by hand
2.	-1 through 10-	50 Nm
3.	-1 through 10-	90° additional turn
4.	-1 through 10-	90° additional turn
5.	-arrows-	8 Nm
6.	-arrows-	90° additional turn

Pairing Number of the Cylinder Head Cover and the Cylinder Head

Each cylinder head cover is assigned to a cylinder head with this pairing number.

• Both eight digit numbers -arrows- must match: XXXXXXXX = XXXXXXXX.
• For the assembly pay attention to the correct allocation.

Heat Shield - Tightening Specification

-- Tighten the nuts -arrows- and bolt -2- to 9 Nm.

Heat Shield Lower Bracket - Tightening Specification

-- Tighten the bolt -arrows- to 9 Nm.

Cylinder Head, Checking for Distortion

-- Check the cylinder head at several locations for distortion using a Straight Edge - 500mm: VAS6075  and a feeler gauge.

• Maximum permitted distortion: 0.05 mm

Cap Installation and Installation Position

-- Before removing, determine the press-in depth -a-.

-- Coat the cap -1- all around with sealant. Refer to Electronic Parts Information (ETKA).

-- Position the cap -1- parallel to the cylinder block and using a suitable thrust piece (for example the socket) -2- drive in to the previously determined press-in depth -a-.

Courtesy of AUDI OF AMERICA, LLC