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Home >> BMW >> 2018 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 429 (Engine - Repair) >> V-Ribbed Belt With TENSIONER/Deflection Element >> 11 28 050 Replacing drive belt for air conditioning compressor (N20)

11 28 050 Replacing drive belt for air conditioning compressor (N20)

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Special tools required: 

Necessary preliminary tasks: 

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

Turn belt tensioner (1) on the hexagon head (2) in direction of arrow until bore hole on the belt tensioner is flush with the dowel hole.

Keep the belt tensioner (1) tensioned and position with a lock pin or special tool 11 0 390 , if applicable.

Remove drive belt (3).

Fig 1: Turning Belt Tensioner
G09920810Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Installation note: 

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