Cylinder Head Assembly Overview

Cylinder Head Component Overview

• Illustration depicts left cylinder head.

• Both cylinder heads can be removed and installed when engine is installed in engine compartment.





1 High pressure pump

• Removing and installing, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction

2 9 Nm

3 20 Nm

4 Lifting eye

5 O-ring

• Replace

6 Camshaft position sensor, intake camshaft

• Cylinder bank 1 (right) Camshaft Position (CMP) Sensor (G40)

• Cylinder bank 2 (left) Camshaft Position (CMP) Sensor 2 (G163)

7 8 Nm plus an additional 90° (1/4 turn)

• Replace

8 O-ring

• Replace

9 Solenoid valve for camshaft adjustment - intake side

• Cylinder bank 1 (right) Camshaft Adjustment Valve 1 (N205)

• Cylinder bank 2 (left) Camshaft Adjustment Valve 2 (N208)

10 2.5 Nm

11 Gasket

• Replace if damaged or leaking

12 Cap

13 O-ring

• Replace

14 Solenoid valve for camshaft adjustment - exhaust side

• Cylinder bank 1 (right) Exhaust camshaft control valve 1 (N318)

• Cylinder bank 2 (left) Camshaft Adjustment Valve 2 (exhaust) (N319)

15 2.5 Nm

16 Special bolt - 9 Nm

• Replace if damaged or leaking

• Observe sequence for tightening => [ Tightening specifications ] Left Cylinder Head Cover

17 Cylinder head cover

• Removing and installing, refer to: Left => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, right => [ Right Cylinder Head Cover ] Right Cylinder Head Cover

18 Cylinder head cover gasket

• Replace if damaged or leaking

19 Cylinder head bolt

• Replace

• Observe sequence for loosening => [ Follow sequence when
loosening cylinder head bolts. ] Cylinder Head

• Observe sequence for tightening => [ Tighten cylinder head in sequence indicated,
in 3 stages as follows: ] Cylinder Head

20 O-ring

• Replace

21 8 Nm plus an additional 90° (1/4 turn)

• Replace

22 Camshaft position sensor, exhaust camshaft

• Cylinder bank 1 (right) Camshaft Position (CMP) Sensor 3 (G300)

• Cylinder bank 2 (left) Camshaft Position (CMP) Sensor 4 (G301)

23 Cylinder Head

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

• Check for distortion => [ Checking cylinder head for distortion ]

• Reworking dimension => [ Reworking dimension, cylinder head ]

• Installing => [ Installing ] Cylinder Head

• After replacing, change coolant and engine oil

24 Cylinder head gasket

• Replacing, refer to => [ Cylinder Head ] Cylinder Head.

• Installation position: Part Number, points to cylinder head

• After replacing, change coolant and engine oil

Checking cylinder head for distortion





- Check cylinder head at multiple points for distortion, using straight edge and feeler gauges.

• Max. distortion: 0.05 mm.

Reworking dimension, cylinder head





Resurfacing cylinder head (face grinding) is only permissible to minimum dimension - a -.

• Minimum dimension - a - = 139.20 mm.