Cylinder Head Assembly Overview

Cylinder Head Assembly Overview

• Cylinder head for cylinder bank 2 (left) is shown in illustration.





1 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

2 Cylinder Head

• Removal and installation, refer to => [ Cylinder Head ] Cylinder Head

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

• Reworking dimension, refer to => [ Reworking Dimension, Cylinder Head ]

• After replacing, change coolant and engine oil

3 Cylinder Head Cover Gasket

• Replace if damaged or leaking

4 Cylinder Head Cover

• Removal and installation, refer to => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, => [ Right Cylinder Head Cover ] Right Cylinder Head Cover

5 Gasket

• For cap

• Replace if damaged or leaking

6 Cap

7 Ignition Coil

• Remove with Ignition Coil Puller (T40039)

8 Bolt

• Replace if seal is damaged

9 Camshaft Adjustment Valve 2 (N208)

10 Bolt

• 2.4 Nm

11 O-ring

• Replace

12 Seal

• Replace

13 Locking Bolt

• 35 Nm

14 Bolt

• 2.4 Nm

15 Camshaft Adjustment Valve 2 (exhaust) (N319)

16 O-ring

• Replace

17 Cylinder Head Bolt

• Replace

• Observe sequence for loosening => [ Loosen the cylinder head bolts with the in the sequence. ] Cylinder Head

Left Cylinder Head Cover, Tightening Specifications and Sequence





- Tighten bolts to 9 Nm in the sequence - 1 to 15 -.

Right Cylinder Head Cover, Tightening Specifications and Sequence





- Tighten bolts to 9 Nm in the sequence - 1 to 16 -.

Cylinder Head, Tightening Specifications and Sequence





- Tighten bolts in 5 stages in - 1 to 5 - sequence as follows:

- Install bolts by hand as far as stop.

- Tighten to 30 Nm.

- Tighten to 60 Nm.

- Tighten an additional 90°.

- Tighten an additional 90°.

- Insert bolts - arrows - with locking compound and tighten to 8 Nm; Locking compound.

- Tighten the bolts - arrows - an additional 90°.

Checking Cylinder Head for Distortion





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

• Max. permissible distortion: 0.1 mm.

Reworking Dimension, Cylinder Head





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

• Minimum dimension: - a - = 139.5 mm.