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.
• Installed position: the part number faces the cylinder head
• After replacing, change coolant and engine oil
2 Cylinder Head
• Removing and installing, refer to => [ Cylinder Head ] Cylinder Head
• Check for distortion
• Reworking dimension
• 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, refer to => [ 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 Special Bolt
• 9 Nm
• Replace if seal is damaged
• Note tightening sequence => [ Tighten cylinder head cover in sequence. ] Left Cylinder Head Cover
9 Valve for Camshaft Adjustment
• Cylinder bank 1 (right) camshaft adjustment valve 1 (N205)
• Cylinder bank (left) 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 in the Exhaust
• Cylinder bank 1 (right) Exhaust camshaft control valve 1 (N318)
• Cylinder bank (left) Camshaft Adjustment Valve 2 (exhaust) (N319)
16 O-ring
• Replace
17 Cylinder Head Bolt
• Replace
• Observe sequence for loosening => [ Loosen cylinder head bolts in sequence and remove them. ] Cylinder Head
• Note tightening sequence => [ Tighten the bolts in 6 steps according to
the tightening sequence: ] Cylinder Head
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.