Replace timing chain

AR05.10-S-7601EG

Replace timing chain

15.02.2016

Model

447, 448 with engine 274

1

Timing chain

3

Chain slide bar

5

Chain tensioning rail

6

Chain slide bar

 Danger !

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

 Danger !

Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating range of the mechanism when moving components.

AS00.00-Z-0009-01A



Remove

1

Remove camshaft positioner

AR05.20-S-7204EG

2

Disconnect timing chain (1)

AR05.10-S-7601-01EG

 Rivet press tool

*276589003900



Check

3

Check chain tensioning rail (5) for wear and external damage

Depending on findings



Remove/install tensioning rail timing chain

AR05.10-S-8510EG

4

Check chain tensioning rails (3, 6) for wear and external damage

Depending on findings



Remove/install slide rail of timing chain

AR05.10-S-8480EG



Install

5

Draw in new timing chain (1)

AR05.10-S-7601-04EG

 Socket wrench bit

*001589650900

 Assembly element

*271589096300

6

Rivet new timing chain (1)

AR05.10-S-7601-02EG

 Rivet press tool

*276589003900

7

Install camshaft positioner

AR05.20-S-7204EG

 Do not fit cylinder head cover as yet.

8

Set basic position of camshafts

AR05.20-S-6020EG

9

Install cylinder head cover

AR01.20-S-5014EG



Check

 Danger !

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

10

Check for leaktightness with engine running

 Visual inspection only.