Cylinder Head Overview

Cylinder Head Overview

• Replace 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.

• When replacing the cylinder head or cylinder head gasket, coolant must be completely replaced.






1 Cylinder Head Gasket

• Replace

• Installed position: the part number faces the cylinder head

2 Bolt

• 25 Nm

3 Transport Strap

4 Bolt

• Tighten in 2 stages:

- Tighten to 8 Nm.

- Tighten 90° further using a rigid wrench.

5 Cylinder Head

• Removing and installing, refer to => [ Cylinder Head ] Cylinder Head

• Check for distortion => [ Checking Cylinder Head for Distortion ]

6 Cylinder Head Bolt

• Replace

• Follow the procedure when loosening => [ Turn the vibration damper to
with the. ] Cylinder Head.

• Follow the procedure when tightening => [ Position the cylinder head. ] Cylinder Head.

• Tighten in 3 stages:

- Tighten to 40 Nm.

- Tighten 90° further using a rigid wrench.

- Tighten 90° further using a rigid wrench.

7 O-ring

• Replace

• Coat with engine oil

8 Camshaft Adjuster Actuator

9 Bolt

• 5 Nm

10 O-ring

• Replace

• Lubricate with engine oil

11 Sealing Plugs

• 5 Nm

• With ball head for the engine cover

12 Cap

• With gasket

13 O-ring

• Replace

• Lubricate with engine oil

14 Sealing Plugs

15 To Intake Manifold

16 Heat Shield

17 Bolt

• 20 Nm

18 Bolt

• 20 Nm

19 To the Intake Manifold/Turbocharger

20 Ventilation Pipe

21 O-ring

• No replacement part

22 Gasket

• No replacement part

23 Engine Cover

24 Bolt

• Tightening order => [ Crankcase Ventilation, Tightening Sequence ]

25 Crankcase Ventilation

26 Gasket

• No replacement part

27 Gasket

• Replace if damaged

28 Vacuum Pump

29 Bolt

30 Connecting Piece

31 Mounting Plate

32 Bolt

• 9 Nm

33 O-ring

• Replace

• Coat with coolant

34 Transport Strap

35 Bolt

• 25 Nm

36 Bolt

• 9 Nm

37 Camshaft Position Sensor (G40)

38 Partition Plate

39 O-ring

• Replace

• Lubricate with engine oil

Crankcase Ventilation, Tightening Sequence





• The bolts are self-tapping. Only use original bolts when replacing the cylinder head, since the cylinder head is delivered without a thread for the installing the crankcase ventilation.

• It is not permitted to cut the thread with a thread cutter.

- Tighten the crankcase ventilation bolts to 11 Nm in sequence - 1 to 10 -.

Checking Cylinder Head for Distortion





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

• Maximum permissible distortion: 0.05 mm