Cylinder Head Overview
Cylinder Head Overview
• The illustration shows the cylinder bank 2 cylinder head (left).
1 Cylinder Head Gasket
• Removing and installing, refer to => [ Cylinder Heads ] Cylinder Heads
• Installed position: Parts number to cylinder head
• after replacing, change coolant and engine oil
2 Cylinder Head
• Removing => [ Cylinder Heads ] Cylinder Heads
• Check for distortion => [ Checking Cylinder Head for Distortion ]
• Reworking dimension => [ Reworking Dimension, Cylinder Head ]
• Installing => [ Installing ] Cylinder Heads
• After replacing, change coolant and engine oil
3 Bolt
4 Vacuum Pump
5 O-ring
• Replace
6 Bolt
• 20 Nm
7 Engine Lifting Eye
8 Camshaft Position Sensor, Intake Camshaft
• Cylinder bank 1 (right) Camshaft Position (CMP) Sensor (G40)
• Cylinder bank 2 (left) Camshaft Position (CMP) Sensor 2 (G163)
9 Bolt
• 9 Nm
10 Bolt
• Tighten in 3 stages:
- Tighten to 40 Nm.
- Tighten an additional 90°.
- Tighten an additional 90°.
• Loosening procedure => [ The cams on the intake camshaft partially restrict access to the cylinder head bolts, such as bolts shown in this example. ] Cylinder Heads
• Replace
• Loosening procedure => [ Position the cylinder head. ] Cylinder Heads
11 Ignition Coil
• Use puller for ignition coil (T40039) for removal
12 Cylinder Head Cover
• Removing and installing, refer to => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, right => [ Right Cylinder Head Cover ] Right Cylinder Head Cover
13 Gasket
• Replace if damaged or leaking
14 Cover
15 Bolt
• Replace if the seal is damaged
• Tightening specifications, refer to => [ Left Cylinder Head Cover, Tightening Specifications and Sequence ] and => [ Right Cylinder Head Cover, Tightening Specifications and Sequence ].
16 Bolt
17 Connector Strip
• For ignition coils
18 Cylinder Head Cover Gasket
• Replace if damaged or leaking
19 Bolt
• 2.5 Nm
20 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)
21 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)
22 O-rings
• Replace
23 O-ring
• Replace
24 Bolt
• 9 Nm
25 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)
Left Cylinder Head Cover, Tightening Specifications and Sequence
- Tighten the bolts to 9 Nm in the following sequence: - 1 to 12 -.
Right Cylinder Head Cover, Tightening Specifications and Sequence
- Tighten the bolts to 9 Nm in the following sequence: - 1 to 12 -.
Checking Cylinder Head for Distortion
- Check the cylinder head in several places for distortion using a straight edge and a feeler gauge.
• Maximum warp: 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.
Oil Dipstick Guide Tube - Tightening Specifications
- Tighten the bolt - arrow - to 9 Nm.