Drive Belt: Service and Repair

Ribbed belt, removing and installing

Note:
^ The following illustration shows the belt drive on vehicles without air conditioner.
^ Before removing the ribbed belt, mark the direction of rotation using chalk or a felt marker pen. If the belt rotates in the wrong direction when it is reinstalled, this can cause breakage. Ensure that the belt is properly seated in the pulleys when installing.





1 - 25 Nm

2 - Tensioning element for ribbed belt

^ Turn with open-end wrench to loosen ribbed belt.

3 - Vibration damper

^ With pulley for ribbed belt
^ Can only be installed in one position

4 - 25 Nm

5 - Alternator

^ To facilitate the positioning of alternator on bracket, knock back threaded bushings for retaining bolts slightly

6 - 25 Nm

7 - Bracket

^ Illustration shows version for vehicles without air conditioner

8 - 45 Nm

9 - 25 Nm

10 - Banjo bolt, 30 Nm

11 - Sealing ring

^ Always replace

12 - Pressure line

13 - Sealing ring

^ Always replace

14 -Vane pump

^ For power steering

^ To facilitate positioning of vane pump on bracket, knock back threaded bushings for retaining bolts slightly

15 - Pulley

^ For vane pump

16 - 25 Nm

17 - 25 Nm

18 - Ribbed belt

^ Position of ribbed belt on vehicles without air conditioner Go to Fig. 1
^ Position of ribbed belt on vehicles with air conditioner Go to Fig. 2
^ A double ribbed belt is installed on engines with A/C compressor
^ Mark direction of rotation before removing
^ Check for wear
^ Do not kink





Fig. 1 Ribbed belt on vehicles without air conditioner





Fig. 2 Ribbed belt on vehicles with air conditioner

Note:
Engines with an air conditioner compressor are installed with a double ribbed belt.





Fig. 3 Installing air conditioner compressor

- To facilitate the positioning of the A/C compressor, knock back threaded bushings -B- for retaining bolts -A- slightly in direction indicated (arrow).

- Tighten bolts to 45 Nm.

Removing ribbed belt

Note:
Mark the direction of rotation with chalk or felt pen before removing the ribbed belt. If the belt rotates in the wrong direction when it is reinstalled, it can break. Ensure that the belt is properly seated in the pulleys when installing.





- To loosen ribbed belt turn tensioning element in direction of arrow.
- Remove ribbed belt.





- The tensioning element can be locked in position with a suitable punch (4.5 mm diameter, approx. 55 mm long). Connecting rod support 3090 can also be used.

Installing ribbed belt

Note:
Before installing the ribbed belt ensure that all sub-assemblies (alternator, air conditioner compressor, vane pump) are tight.

- Install ribbed belt.





- Slacken tensioning element for ribbed belt. Pull out punch or corned support 3090 (arrows).
- Start engine and check belt running.

Note:
Engines with an air conditioner compressor are installed with a double ribbed belt.