Overview - Cylinder Head

WARNING: This page is about a different car, the 2018 Audi Q3 Quattro, 2018 Audi Q3, 2017 Audi Q3 Quattro, and 2017 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Cylinder Head Components

Courtesy of AUDI OF AMERICA, LLC

Alignment Pin
- Quantity: 2
Cylinder Head Gasket
- Always replace after removing
- Installed position: the part number faces the cylinder head
- Change the coolant and engine oil after replacing
Cylinder Head
- Checking for distortion. Refer to Fig 4.
- Change the coolant and engine oil after replacing
- Removing and installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
Bolt
- Tightening specification and sequence. Refer to Fig 3.
- Always replace after removing
- Loosening. Refer to Fig 2.
Heat Shield
- Equipped on some models
Bolt
- 9 Nm
Bolt
- 9 Nm
Heat Shield
- There are different versions. Refer to the parts information for the allocation.
Bolt
- 9 Nm
Bolt
- 9 Nm
Connection
- For coolant hose
O-ring
- Always replace after removing
- Coat with coolant
Bolt
- Tightening Specifications and Sequence. 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
Mount
- For the engine cover
Engine Lifting Eye
Bolt
- 10 Nm + 90°
- Always replace after removing
Partition Plate
Ball Pin
- For the engine cover
Engine Lifting Eye
Bolt
- 10 Nm + 90°
- Always replace after removing
Alignment Pin

Fig 2: Loosening Cylinder Head Bolts In Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows-.

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

Fig 3: Cylinder Head Bolts Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

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

NOTE:

The strength category of the bolts is specified on the bolt head.

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

Cylinder Head Bolts Tightening Sequence

Step	Bolts	Tightening Specification/Additional Turn
1.	-1 through 10-	Install by hand all the way
2.	-1 through 10-	"Bolts with screws 10.9" 40 Nm "Bolts with strength category 12.9" 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

Fig 4: Checking Cylinder Head At Several Locations For Distortion

Courtesy of AUDI OF AMERICA, LLC

-- 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