Remove, install timing chain

AR05.10-S-7602EF

Remove, install timing chain

16.02.2016

Model

447 with engine 622

Modification notes

15.01.2016

Method extended

Operation step 6

1

Timing chain

2

Chain tensioner

3

Tensioning rail

5

Screw/bolt

6

Timing chain sprocket

7

Crankshaft gear

8

Elongated hole

6

Timing chain sprocket

7

Crankshaft gear

9

Marking

10

Chain link

11

Hole

12

Chain link

 

Remove/install

1

Check basic position of camshafts

AR05.20-S-6010EF

2

Remove adjustment tool

 Adjustment tool

*626589044000

3

Lock chain tensioner (2)

AR05.10-S-7800EF

 Chain tensioner (2) is not removed.

4

Remove tensioning rail (3)

AR05.10-S-8424EF

5

Remove screw/bolt/bolts (5)

 Installation: Replace screw/bolts (5).

 Bolt, timing chain sprocket and camshaft sprocket to camshaft

*BA05.10-N-1005-01J

6

Remove timing chain (1) together with the crankshaft gear (7) and timing chain sprocket (6)

 Installation: The elongated hole (8) on the timing chain sprocket (6) must stand in the middle of the associated threaded hole in the exhaust camshaft. This simplifies possible later adjustment of the basic position of the camshafts.

 Installation: Align the marking (9) on the crankshaft gear (7) to the copper colored chain link (10). Align the bore (11) in the timing chain sprocket (6) in the middle to the copper colored chain links (12).

7

Install in the reverse order

 Timing chain drive

Number

Designation

Engine 622 in model 447

BA05.10-N-1005-01J

Bolt, timing chain sprocket and camshaft sprocket to camshaft

Stage 1

Nm

10

Stage 2

°

40