11 28 010 Replacing drive belt for alternator (N55 Hybrid)

Special tools required:

WARNING: Compliance with the following points is mandatory before beginning work:

Necessary preliminary work:

NOTE: Mark the direction of travel of the drive belt if it is to be reused.

Turn belt tensioner (1) in direction of arrow until bore hole (2) is aligned with belt tensioner and crankcase.

Hold belt tensioner (1) under tension.

Secure with special tool 11 0 390 .

Turn belt tensioner (3) in direction of arrow until bore hole (4) is aligned with belt tensioner and crankcase.

Fig 1: Turning Alternator Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Hold belt tensioner (3) under tension.

Secure with special tool 11 0 390 .

Remove drive belt (5).

Assemble engine.

Installation note:

Check drive belt for correct installation position and, if reusing, observe direction of travel. Risk of damage .