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 engine oil and coolant

2 Cylinder Head

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

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

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

• After replacing, change engine oil and coolant

3 Cylinder head cover gasket

• Replace if damaged or leaking

4 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

5 Gasket

• For cap

• Replace if damaged or leaking

6 Cap

7 Ignition coil

• Remove with Puller (T40039)

8 Bolt

• Replace if seal is damaged

• Tightening specifications and sequence: Left cylinder head cover => [ Left Cylinder Head Cover, Tightening Specifications
and Sequence ] , right cylinder head cover => [ 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 Locking bolt

• 35 Nm

14 Bolt

• 2.4 Nm

15 Camshaft Adjustment Valve 2 (exhaust) (N319)

16 O-ring

• Replace

17 Bolt

• Replace

• Observe sequence for loosening => [ Using , remove cylinder head bolts in sequence. ] Cylinder Head

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

Left Cylinder Head Cover, Tightening Specifications and Sequence





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

Right Cylinder Head Cover, Tightening Specifications and Sequence





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

Cylinder Head, Tightening Specifications and Sequence





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

- Insert bolts by hand as far as stop.

- Tighten bolts to 30 Nm.

- Tighten bolts to 60 Nm.

- Tighten an additional 90° (1/4 turn).

- Tighten an additional 90° (1/4 turn).

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

- Tighten bolts - arrows - an additional 90° (1/4 turn).

Checking cylinder head for distortion





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

• 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.