Drive Belt: Service and Repair

Note: If the drive belt are to be reused, mark the rotation direction and reinstall the drive belt with the same rotation direction.

Remove fan coupling with fan wheel, refer to Cooling System.





Remove the dust cab.
Push the tensioning device for the drive belt of the alternator back on the bolt connection of the pulley.

Caution:
The bolt connection of the pulley for the tensioning device for the drive belt has left-hand thread and is peened.
Only change the pulley in conjunction with the tensioning device for the drive belt.

Remove drive belt.





Installation:
If necessary, apply preload to the tensioning device for the drive belt as far as possible and lock with Special Tool 11 3 340.
This will make it easier to put on the drive belt.

Caution:
The tensioning device for the drive belt is under high spring pressure.
Press Special Tool 11 3 340 in as far as possible.

Check drive belt for coolant and oil residue and replace if necessary.

Caution: It is essential to replace drive belt if it comes into contact with hydraulic fluid.





Installation:
Put on the drive belt.
Push the tensioning device for the drive belt back on the pulley until Special Tool 11 3 340 is no longer under pressure; remove Special Tool 11 3 340.





Layout of drive belt.
Make sure that drive belt is correctly seated in pulley grooves.