11 28 010 Removing and installing/replacing drive belt for alternator (M57T2)

Necessary preliminary tasks

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

IMPORTANT: The drive belt must be replaced if it is contaminated with hydraulic fluid.

NOTE: If the drive belt is to be reused, mark direction of travel and reinstall drive belt in same direction of rotation.

IMPORTANT: Belt tensioner is under spring pressure.

Press belt tensioner (1) back in direction of arrow.

Remove drive belt (2).

Fig 1: Identifying Belt Tensioner And Drive Belt

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.