11 28 010 Replacing drive belt for alternator (N55)

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Special tools required:

11 0 390

Necessary preliminary work:

Remove FAN COWL with electric fan.

Routing of drive belt without Dynamic Drive

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.

Fig 1: Turning Alternator Drive Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Hold belt tensioner (1) under tension.

Secure with special tool 11 0 390 .

Remove drive belt (3).

Routing of drive belt with Dynamic Drive

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

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

Hold belt tensioner (2) under tension.

Fig 2: Turning Alternator Drive Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Secure with special tool 11 0 390 .

Remove drive belt (3).

Assemble engine.

Installation note:

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