Cylinder Head, Component Overview
Cylinder Head, Component Overview
Note:
^ Illustration depicts left cylinder head.
^ Both cylinder heads can be removed and installed when engine is installed in engine compartment.
1 - High pressure pump
2 - 9 Nm
3 - 20 Nm
4 - Lifting eye
5 - O-ring
^ Replace
6 - Camshaft position sensor, intake camshaft
^ Cylinder bank 1 (right) Camshaft Position (CMP) Sensor G40
^ Cylinder bank 2 (left) Camshaft Position (CMP) Sensor 2 G163
7 - 8 Nm plus an additional 90 degree (1/4 turn)
^ Replace
8 - O-ring
^ Replace
9 - 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
10 - 2.5 Nm
11 - Gasket
^ Replace if damaged or leaking
12 - Cap
13 - O-ring
^ Replace
14 - 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
15 - 2.5 Nm
16 - Special bolt - 9 Nm
^ Replace if damaged or leaking
^ Observe sequence for tightening
17 - Cylinder head cover
18 - Cylinder head cover gasket
^ Replace if damaged or leaking
19 - Cylinder head bolt
^ Replace
^ Observe sequence for loosening.
^ Observe sequence for tightening
20 - O-ring
^ Replace
21 - 8 Nm plus an additional 90 degree (1/4 turn)
^ Replace
22 - 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
23 - Cylinder Head
^ Check for distortion
^ Reworking dimension
^ After replacing, change coolant and engine oil
24 - Cylinder head gasket
^ Replacing.
^ Installation position: Part Number, points to cylinder head
^ After replacing, change coolant and engine oil
Checking cylinder head for distortion
- Check cylinder head at multiple points for distortion, using straight edge and feeler gauges.
^ Max. distortion: 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.