11 28 050 Replacing A/C Compressor Drive Belt with Belt Tensioner (N63O1)

IMPORTANT: Risk of Damage!
Release Screws (1) On Vibration Absorber Only If Removal Position Is Adjusted.
If Contaminated with Hydraulic Fluid: Replace Drive Belt.
Crank Engine At Central Bolt In Direction of Engine Rotation.

Installation Note:

If The Drive Belt Is To Be Reused, Mark Direction of Travel and Reinstall Drive Belt In Same Direction of Rotation.

Necessary Preliminary Tasks:

Remove DRIVE BELT for Alternator.

NOTE: Observe Direction of Engine Rotation.

Crank Engine At Central Bolt Until Marking (See Arrow In Illustration) Is Reached On Vibration Absorber.

Release Screws (1).

Tightening torque 11 28 2AZ .

Fig 1: Identifying Correct Fitting of Bearing Shells

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Belt Pulley Is Pretensioned.
Belt Pulley Tension Is Relieved Abruptly During The Cranking Process!

NOTE: Observe Direction of Engine Rotation.

Crank Engine At Central Bolt Until Marking (See Arrow In Illustration) Is Reached On Vibration Absorber.

Remove Elasto-Belt.

Fig 2: Identifying Belt and Pulley

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble Engine.