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Home >> BMW >> 2003 >> 330i Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair (6-CYL) >> V-ribbed belt with tensioner >> 11 28 050 Replacing A/C compressor drive belt (M52 / S52 / M52TU / M54 / M56)

11 28 050 Replacing A/C compressor drive belt (M52 / S52 / M52TU / M54 / M56)

NOTE: If the drive belt is to be subsequently reused:
Mark direction of travel and reinstall drive belt in same direction of travel.

Necessary preliminary tasks: 

Model with hydraulic drive belt and tension jack: 

Remove the dust cab. Push back belt tensioner at bolt connection of guide pulley and remove drive belt.

Fig 1: Identifying Dust Cab
G03123324Courtesy of BMW OF NORTH AMERICA, INC.

Model with mechanical drive belt and tension jack: 

Press back drive belt tensioner at hexagon head or Torx socket and remove drive belt.

IMPORTANT: Drive belt must be replaced if fouled with hydraulic fluid.

Installation: 

Check drive belt for coolant and oil residues, replace if necessary.

Install drive belt, make sure it is correctly positioned on belt pulleys.

Fig 2: Checking Drive Belt For Coolant & Oil Residues
G03123325Courtesy of BMW OF NORTH AMERICA, INC.