Drive Belt Tensioner: Service and Repair

Auxiliaries belt / belt tensioner, replacing

Special tools:
999 5722 Wrench 999 5722 Wrench
999 7109 Wrench 999 7109 Wrench

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Removal

Removing the engine control module (ECM)




Ignition off. Wait 2 minutes.

Caution! Do not touch the terminal pins on the engine control module (ECM) with your fingers. Static electricity may damage components in the control module.

Remove the cover over the control module box. Put the cover to one side.
Insert tool: 999 5722 Wrench 999 5722 Wrench around the control module. Move the upper section of the tool backwards as far as it will go. Pull up the tool. Carefully pull up the control module.
For vehicles with automatic transmissions repeat the above work.
Remove the surround from around the control module box.

Removing the auxiliaries belt





Note! Make a note of the routing of the belt.

Remove the auxiliaries belt. Use: 999 7109 Wrench 999 7109 Wrench.

Replacing the belt tensioner





Remove:
- both mounting screws from the auxiliaries belt bracket for the belt tensioner
- the belt tensioner.

Install:
- a new belt tensioner
- the screws for the belt tensioner. Tighten.

Installation

Note! For tightening torques, see: Tightening torque Tightening Torque.

Installing the auxiliaries belt

Note! Ensure that the auxiliaries belt is correctly positioned on all the pulleys.

Install the auxiliaries belt. Use: 999 7109 Wrench 999 7109 Wrench.

Installing the engine control module (ECM)





Caution! Check that no pins or sockets are damaged on the connector.

Install the surround for the control module box.
Carefully press the engine control module (ECM) down into the grooves on the inside of the control module box. Press down all the way.
Install the tool: 999 5722 Wrench 999 5722 Wrench around the control module.
Move the upper section of the tool forwards as far as it will go. Pull up the tool.
Press the cover into place over the control module. Check that the air ducts are correctly positioned.

Finishing
Start the engine and check the function.