Overview - Cylinder Head

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Fig 1: Cylinder Head Exploded View

Courtesy of AUDI OF AMERICA, LLC

Alignment Pin
Cylinder Head Gasket
- Always replace after removing.
- Installed position: the part number faces the cylinder head
Cylinder Head
- Checking for distortion. Refer to Fig 5.
- Only replace together with the cylinder head cover
- Removing and installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
Bolt
- Tightening. Refer to Fig 3.
- Always replace after removing.
- Loosening. Refer to Fig 2.
Bolt
- 9 Nm
Heat Shield
Bolt
- 9 Nm
Bolt
- 9 Nm
Connection
- For coolant hose
O-Ring
- Always replace after removing.
- Coat with coolant
Cylinder Head Bolt
- Tightening. Refer to Fig 3.
- Always replace after removing.
- Loosening. Refer to Fig 2.
O-Ring
- Always replace after removing.
- Coat with coolant
Connection
- For coolant hose
Bolt
- 9 Nm
Engine Lifting Eye
Bolt
- 10 Nm + 90°
- Always replace after removing.
Partition Plate
Engine Lifting Eye
Bolt
- 10 Nm + 90°
- Always replace after removing.
Alignment Pin

Loosening the Cylinder Head

Fig 2: Cylinder Head Loosening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows-.

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

Cylinder Head - Tightening Specifications and Sequence

Fig 3: Cylinder Head Bolts

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-

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

Fig 4: Cylinder Head Bolts Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

Step	Screws	Tightening Specification/Additional Turn
1.	-1 through 10-	Install by hand all the way
2.	-1 through 10-	"Without collar" 40 Nm "with collar" 50 Nm, difference. Refer to OVERVIEW - CYLINDER HEAD - Bolt differences: .
3.	-1 through 10-	90° additional turn
4.	-1 through 10-	90° additional turn
5.	-arrows-	10 Nm
6.	-arrows-	90° additional turn

Cylinder Head, Checking for Distortion

Fig 5: Check Cylinder Head For Distortions

Courtesy of AUDI OF AMERICA, LLC

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

Maximum permissible distortion: 0.05 mm