Overview - Cylinder Head

WARNING: This page is about a different car, the 2016 Audi Q3 Quattro, 2016 Audi Q3, 2015 Audi Q3 Quattro, and 2015 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Replace the cylinder head bolts.

Always replace self-locking nuts, bolts which have been tightened to tightening specifications as well as gaskets and O-rings.

The plastic protectors installed to protect the open valves must only be removed immediately before fitting the cylinder head.

The engine oil and coolant must be changed if the cylinder head or cylinder head seal are replaced.

Fig 1: Cylinder Head Exploded View

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Cylinder Head Gasket
- Always replace
- Installed position: the part number faces the cylinder head
Bolt
- 25 Nm
Engine Lifting Eye
Bolt
- Always replace
- Follow the sequence when loosening. Refer to 38
- Observe sequence for tightening. Refer to 38
Cylinder Head
- Removing and installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
- Check for distortion. Refer to 38
Cylinder Head Bolt
- Always replace
- Follow the sequence when loosening. Refer to 38
- Observe sequence for tightening. Refer to 38
O-Ring
- Always replace
- Lubricate with engine oil
Plug
- 5 Nm
- With ball head for the engine cover
Cover
- With seal
O-Ring
- Always replace
- Lubricate with engine oil
Plug
Bracket
Bolt
- 7 Nm
Heat Shield
Bolt
- 20 Nm
Bolt
- 20 Nm
To the Intake Manifold/Turbocharger
Ventilation Pipe
O-Ring
- No replacement part
Seal
- No replacement part
Engine Cover
- Removing and installing. Refer to ENGINE COVER, REMOVING AND INSTALLING .
Bolt
- Tightening sequence. Refer to Fig 2
Crankcase Housing Ventilation
- Observe sequence for tightening. Refer to Fig 2
- Removing and installing. Refer to CRANKCASE VENTILATION, REMOVING AND INSTALLING .
To the Intake Manifold
Seal
- Replace if damaged.
Seal
- Replace if damaged
Vacuum Pump
- Removing and installing. Refer to VACUUM PUMP, REMOVING AND INSTALLING
Bolt
- Tightening specification. Refer to OVERVIEW - VACUUM PUMP .
Retaining Plate
Bolt
- 9 Nm
Connecting Piece
O-Ring
- Always replace
- Coat with coolant
Engine Lifting Eye
Bolt
- 25 Nm
Bolt
- Tightening specification -item 3- OVERVIEW - IGNITION SYSTEM
Camshaft Position Sensor -G40-
O-Ring
- Always replace
- Lubricate with engine oil
Partition Plate

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows-.

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

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-- Tighten the cylinder head bolts in the sequence -1 to 10- as follows.

-- Partially tighten to 40 Nm using a torque wrench.

-- Turn another 90° using a rigid wrench.

-- Partially tighten the bolts -arrows- to 8 Nm.

-- Tighten the bolts -arrows- 90° further using a rigid wrench.

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-- Check the cylinder head in several places for distortion using a straight edge and a feeler gauge.

Maximum permissible distortion: 0.05 mm.

Fig 2: Crankcase Ventilation Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC