Replace timing chain

AR05.10-S-7601PS

Replace timing chain

17.05.2018

Engine

642 in model 470, 471

1

Timing chain

2

Screw

3

Camshaft

4

Camshaft

5

Hold-down tool

6

Chain tensioner

 Warning

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 area of mechanical components when moving components.

AS00.00-Z-0009-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A



Remove

1

Remove chain tensioner(6).

AR05.10-S-7800PS

2

Remove glow output stage and place to the side with lines connected.

AR15.20-S-4500PS

3

Remove right cylinder head cover.

AR01.20-S-5012PS

4

Remove left cylinder head cover.

AR01.20-S-5013PS

5

Attach hold-down device (5) to the center bearing positions of the camshafts (3, 4)

 The hold-down devices (5) assume function of camshaft bearings and relieve the load on camshaft brackets.

 Holddown device kit

*642589003100

6

Disconnect timing chain (1).

AR05.10-D-7601-01S

 Case

*602589009800

 Chain separating tool

*602589023300

 Pressure pins

*602589046301

 Tie-down set

*642589044000

 Thrust spindle

*602589046300

 Assembly inserts

*642589056300



Install

7

Draw in timing chain (1).

AR05.10-D-7601-04S

 Turn crankshaft of the engine from above on the screw/bolt (2) in direction of engine rotation.

 Case

*602589009800

 Assembly links

*602589024000

 Tie-down set

*642589044000

8

Rivet timing chain (1).

AR05.10-D-7601-02S

 Bolt of rivet element in timing chain (reference value)

*BA05.10-N-1005-01G

 Riveting tool

*642589003300

 Case

*602589009800

 Tie-down set

*642589044000

 Assembly inserts

*642589056300

9

Check basic position of camshafts.

AR05.20-D-6010SF

10

Remove hold-down tool (5)

11

Install left cylinder head cover.

AR01.20-S-5013PS

12

Install right cylinder head cover.

AR01.20-S-5012PS

13

Attach glow output stage

AR15.20-S-4500PS

14

Install chain tensioner (6)

AR05.10-S-7800PS

 Chain drive, belt drive

Number

Designation

Engine 642 in model 470, 471

BA05.10-N-1005-01G

Bolt of rivet element in timing chain (reference value)

Nm

32