11 28 010 Replacing alternator drive belt (N54)

Special tools required:

11 3 340

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 .

Release bracket (1) for A/C lines.

Fig 1: Identifying Bracket For A/C Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Turn belt tensioner (1) in direction of arrow until bore (2) is flush on housing.

Secure belt tensioner in place with special tool 11 3 340 .

Fig 2: Turning Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Remove drive belt (1).

Installation:

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

Fig 3: Identifying Drive Belt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Note arrangement of drive belt

Fig 4: Turning Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Installation:

Check that drive belt for is in correct installation position - risk of damage.