Cylinder Head Overview

Cylinder Head Overview

• The illustration shows the cylinder bank 2 cylinder head (left).






1 Cylinder Head Gasket

• Replacing, refer to => [ Left Cylinder Head, Removing ] Left Cylinder Head, Removing or => [ Right Cylinder Head, Removing ] Right Cylinder Head, Removing

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

• Installed position: Parts number to cylinder head

• After replacing, change coolant and engine oil

2 Cylinder Head

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

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

• 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

• Removing and installing, 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 Cover

7 Ignition Coil

• Remove with ignition coil puller (T40039)

8 Bolt

• Replace if the seal is damaged

• Tightening specifications and sequence, refer to => [ Left Cylinder Head Cover, Tightening Specifications and Sequence ] , => [ Right Cylinder Head Cover, Tightening Specifications and Sequence ]

9 Camshaft Adjustment Valve 2 (N208)

10 Bolt

• 2.4 Nm

11 O-ring

• Replace

12 Seal

• Replace

13 Drain Plug

• 35 Nm

14 Bolt

• 2.4 Nm

15 Exhaust Camshaft Adjustment Valve 2 (N319)

16 O-ring

• Replace

17 Bolt

• Replace

• Loosening sequence => [ Loosen the cylinder head bolts in the following sequence. ] Left Cylinder Head, Removing

• Tightening specification and sequence, refer to => [ Cylinder Head, Tightening Specifications and Sequence ]

Left Cylinder Head Cover, Tightening Specifications and Sequence





- Tighten the left cylinder head cover bolts to 9 Nm in sequence - 1 to 15 -.

Right Cylinder Head Cover, Tightening Specifications and Sequence





- Tighten the right cylinder head cover bolts to 9 Nm in sequence - 1 to 16 -.

Cylinder Head, Tightening Specifications and Sequence





• Replace bolts that are tightened to the specification.

- Tighten the bolts in 7 steps in the sequence shown:






Checking Cylinder Head for Distortion





- Check the cylinder head on several locations for distortion using a straight edge 500 mm (VAS 6075) and a feeler gauge.

• Maximum 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.