Removing/installing a timing belt

AR05.00-P-7601FB

Removing/installing a timing belt

24.1.05

16.3.05

Work step: Raise vehicle and lower as well as ''Removing/installing the engine mount" no longer required



Removing



From a mileage of more than 50,000 km a timing belt (3) should always be replaced when removed

1

Remove timing belt cover (3)

AR05.10-P-7605FB

2

Tighten spacer (1) using bolt (2) and washer

 Only turn the engine with the installed spacer (1) at the bolt (2) otherwise the crankshaft can get damaged.



*454589001400

3

Position engine to TDC

 Only turn engine in its direction of rotation.

Refer to:

Inspect timing

AR05.10-P-6858-01FB

4

Screw in centering pin (4) by hand into the coolant pump (9) housing down to the stop on the relay lever (7)



*454589161500

5

Screw in centering pin (4) further until the timing belt tensioner (8) can be secured using a cotter pin

 Turn centering pin (4) at a maximum speed of 30°/second otherwise the timing belt tensioner (8) can get damaged.

 The hole in the timing belt tensioner (8) ram must coincide with the sich hole (arrow) in the timing belt tensioner (8) housing.



*454589161500

6

Secure timing belt tensioner (8) by putting a suitable cotter pin through the hole (arrow)

7

Remove centering pin (4)



*454589161500

8

Slacken bolt (6) on tensioning pulley (5)

9

Slacken timing belt (3) by turning the tensioning pulley (5)



*454589140900

10

Remove timing belt (3)



Installing

11

Inspect timing

AR05.10-P-6858-01FB

12

Lay on timing belt (3)

AR05.10-P-7700-02FB



*454589140900

13

Screw in centering pin (4) by hand into the coolant pump (9) housing down to the stop on the relay lever (7)



*454589161500

14

Screw in centering pin (4) further until the cotter pin in the timing belt tensioner (8) can be moved easily

 Turn centering pin (4) at a maximum speed of 30°/second otherwise the timing belt tensioner (8) can get damaged.



*454589161500

15

Turn engine at the bolt (2) though 90° in in its direction of rotation

 Ensure that the timing belt (3) does not skip otherwise the engine can be damaged by wrong timing.

 The timing belt (3) between the camshaft sprockets as well as between the exhaust camshaft gear and the crankshaft gear is pre-tensioned by turning the engine.

16

Tension and adjust timing belt (3)

AR05.10-P-7700-01FB



*450589021000



*454589002100



*454589140900



*BA05.10-P-1004-01O

17

Pull out cotter pin in timing belt tensioner (8) and remove centering pin (4)



*454589161500

18

Turn engine at the bolt (2) twice in its direction of rotation

19

Inspect timing

AR05.10-P-6858-01FB

20

Check timing belt tension

AR05.10-P-7700-04FB

21

Unscrew bolt (2) and remove the spacer (1)



*454589001400

22

Install timing belt cover (3)

AR05.10-P-7605FB

Number

Designation

Engine 122.950

BA05.10-P-1004-01O

Tensioning pulley bolt on tensioning pulley relay lever

Nm

48