Overview - Cylinder Head

WARNING: This page is about a different car, the 2022 Audi S3, 2022 Audi A3 Quattro, and 2022 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Cylinder Head

Courtesy of AUDI OF AMERICA, LLC

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 .
Bolt
- Replace after removing
- 10 Nm +90°
Engine Lifting Eye
Partition Plate
Bolt
- Replace after removing
- 10 Nm +90°
Engine Lifting Eye
Cylinder Head
- Removing and Installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
- Checking for distortion. Refer to Fig 5.
- 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
- Cap installation and installation position. Refer to Fig 6.
- After removing and installing or replacing an adaptation must be performed. Refer to PERFORM ADAPTATIONS AFTER COMPONENT REPLACEMENT .
Bolt
- Replace after removing
- Loosening. Refer to Fig 2.
- Tightening specification and sequence. Refer to Fig 3.
Bolt
- For vehicle with Particulate Filter Differential Pressure Sensor -G1037-
- 20 Nm
Bracket/Spacer Sleeve
- Bracket for vehicle with Particulate Filter Differential Pressure Sensor -G1037-
- Spacer sleeve for vehicle without bracket for the Particulate Filter Differential Pressure Sensor -G1037-
Heat Shield
Bolt
- 8 Nm
Nut
- 8 Nm
Nut
- 8 Nm
Bolt
- 10 Nm
Plug
- For vehicle with Particulate Filter Differential Pressure Sensor -G1037-
- 20 Nm
Bolt
- 9 Nm
Connection
- for coolant hose
O-Ring
- Replace after removing
- Coat with coolant
Bolt
- Replace after removing
- Loosening. Refer to Fig 2.
- Tightening Specifications and Sequence. Refer to Fig 3.
O-Ring
- Replace after removing
- Coat with coolant
Connection
- for coolant hose
Bolt
- 9 Nm
Alignment Pin
- Quantity: 2

Loosening the cylinder head

Fig 2: Cylinder Head Loosening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows-.

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

Cylinder Head - Tightening Specifications and Sequence

Fig 3: Cylinder Head Bolts Loosening Sequence

Courtesy of AUDI OF AMERICA, LLC

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

Fig 4: Pairing Number of the Cylinder Head Cover and the Cylinder Head

Courtesy of AUDI OF AMERICA, LLC

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.

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 Straight Edge - 500mm: VAS 6075 and a feeler gauge.

Maximum permitted distortion: 0.05 mm

Cap installation and installation position

Fig 6: Cap Installation and Installation Position

Courtesy of AUDI OF AMERICA, LLC

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

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

Courtesy of AUDI OF AMERICA, LLC

-- 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-.