Cylinder Head Overview

Cylinder Head Overview

• When installing a replacement cylinder head, all of the contact surfaces between the hydraulic lash adjusters, roller rocker arms and cam running surfaces on the camshafts must be lubricated before installing the cylinder head cover.

• The plastic protectors installed to protect the open valves must only be removed immediately before installing the cylinder head.

• Whenever replacing the cylinder head or cylinder head gasket, all the coolant must be completely replaced.






1 Bracket

• For the fuel line.

2 Bolt

• 10 Nm

3 Cap

• Replace the seal if damaged.

4 Cylinder Head Cover

• Removing and installing, refer to => [ Cylinder Head Cover ] Service and Repair.

5 Bolt

• 10 Nm

• With a spacer sleeve and seal.

• Replace the seal if damaged.

6 Cylinder Head Cover Gasket

• Replace if damaged or leaking.

• Pay attention to the installed position.

7 Lifting Eye

• With the knock sensor connector retaining plate.

8 Bolt

• 23 Nm

9 Intake Manifold Support

10 Bolt

• 23 Nm

11 Bolt

• 10 Nm

12 Bolt

• 10 Nm

13 Water Connection

• To the heater core.

14 Seal Ring

• Always replace.

• Pay attention to the installed position.

15 Chain Tensioner

• 50 Nm

• For the camshaft timing chain.

• Only rotate the engine with the chain tensioner installed.

16 Cover

• Can be removed and installed with the engine installed.

• Coat the sealing surfaces with silicone adhesive sealant (D 176 501 A1).

17 Seal

• For the camshaft adjustment valve 1 and the exhaust camshaft adjustment valve 1.

• Replace if damaged or leaking.

• Installing, refer to => [ Cover Seal, Installing ] Service and Repair.

18 Bolt

• 8 Nm

19 Bolt

• 8 Nm

20 Coolant Line

• With retaining clips for the vacuum line.

21 Bolt

• 23 Nm

22 Guide Rail

• For the camshaft timing chain.

23 Bolt

• 23 Nm

• Install using liquid locking fluid (D 000 600 A2).

24 Water Connection

• Bolted on the front of the cylinder head.

25 O-ring

• Always replace.

26 Seal

• Always replace.

27 Cylinder Head Gasket

• Made of metal.

• Always replace.

• Replacing the cylinder head gasket, refer to => [ Cylinder Head ] Cylinder Head.

• After replacing, replace the entire amount of coolant.

28 Cylinder Head

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

• After replacing, replace the entire amount of coolant.

29 Bolt

• Always replace.

• Before installing, coat the bolts with liquid locking fluid (D 197 300 A2). Refer to => [ Apply to each cylinder head bolt, under the bolt head and install the bolts. ] Cylinder Head.

• Observe the installation instructions and the sequence for loosening and tightening. Refer to => [ Cylinder Head ] Cylinder Head.

Checking the Cylinder Head for Distortion





Special tools, testers and auxiliary items required

• Straight Edge 500 mm (VAS 6075)

• Feeler Gauge

Max. permissible distortion: 0.05 mm