Cylinder Head, Camshafts Assembly Overview

Cylinder Head, Camshafts Assembly Overview





1 - 50 Nm plus an additional 180°

2 - Camshaft sprocket

3 - Seal

• Replacing, refer to => [ Exhaust Camshaft Sealing Ring ] Exhaust Camshaft Sealing Ring.

4 - Cylinder head

5 - Valve guide

• Checking, refer to => [ Valve Guides, Checking ] Testing and Inspection

6 - Valve stem seal

7 - Valve spring

8 - Top valve spring retainer

9 - Valve keepers

10 - Hydraulic valve play balancing element

• Do not interchange

• Lubricate contact surface

11 - Fitted key

• Check for secure seat

12 - Exhaust camshaft

• Check radial clearance using Plastigage (roller cam follower removed) wear limit: 0.1 mm

• Run-out: max. 0.035 mm

13 - Bearing bracket

• With integrated camshaft bearings

• Clean sealing surface, reworking is not permitted.

• Remove old sealant residue.

14 - 8 Nm plus an additional 90°

• Replace

15 - Camshaft adjuster

16 - 20 Nm plus an additional 45°

• Replace

17 - Intake camshaft

• Check radial clearance using Plastigage (roller cam follower removed) wear limit: 0.1 mm

• Run-out: max. 0.035 mm

18 - Chain tensioner

• Removing, refer to => [ Camshaft Adjuster ] Camshaft Adjuster.

• Before removing, secure with Locking Pin (T10115 )

19 - Drive chain

• Check for wear

20 - 10 Nm

21 - 10 Nm

22 - Phase sensor

23 - Exhaust valve

• Do not rework, only lapping is permitted

• Valve dimensions => [ Valve Dimensions ] [1][2]Specifications

• Check valve guides, refer to => [ Valve Guides, Checking ] Testing and Inspection

24 - Intake valve

• Do not rework, only lapping is permitted

• Valve dimensions => [ Valve Dimensions ] [1][2]Specifications

• Check valve guides, refer to => [ Valve Guides, Checking ] Testing and Inspection

25 - Sealing cap

• Replace

• Removing: When guide frame is installed: Pierce through one side of cover with an awl and pry it out

• Installing: Without sealant press in with thrust piece (3334) 1 to 2 mm deep