Drive Belt: Service and Repair

11 28 010 - Replacing alternator drive belt (N54)





Special tools required:
- 11 3 340 11 3 340 Locking Pin (2 Pieces)





Important!
Mark the direction of rotation of the drive belt if it is to be reused.

Depending on the build date (version), the idler pulleys can be fitted with and without grooves.





Necessary preliminary tasks:
- Remove fan cowl





Unfasten hose clip (1).

Release quick-connect fastener (3) 90° on boost pressure pipe in direction of arrow.

Pull off air hose (2).

Installation Note:
Bring lock (3) back 90° into installation position.

Recirculated air hose must audibly snap into place.





Unclip line (1) from holder (2) in direction of arrow.





Release coolant hose (1) from holder (2).





Release screw (1).

Fold air duct (2) down.

Note:
Do not remove air duct (2).





Turn belt tensioner (1) in direction of arrow until bore is flush on housing.

Secure belt tensioner in place with special tool 11 3 340 11 3 340 Locking Pin (2 Pieces).





Remove drive belt (1).

Installation Note:
Mark the direction of rotation of the drive belt if it is to be reused.





Pretension tensioning pulley (1) in direction of arrow.

Remove special tool 11 3 340 11 3 340 Locking Pin (2 Pieces).





Installation Note:
Note arrangement of drive belt





Assemble engine.

Installation Note:
Risk of damage!

Check that drive belt is in correct installation position.