11 28 010 Replacing alternator drive belt (M52 / S52 / M52TU / M54 / M56)

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2006 BMW 330Ci, 2005 BMW 330xi, 2005 BMW 330i, 2005 BMW 330Ci, and 2004 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.

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:

Remove fan clutch with fan impeller. See 11 52 020 Removing and installing/replacing fan clutch (S52 / S54 / M52 / M52TU / M54 / M56)
Remove A/C compressor drive belt. 11 28 050 Replacing A/C compressor drive belt (M52 / S52 / M52TU / M54 / M56)
E85/E60: Remove radiator cover
E85/E60: Remove fan cowl

Remove cap from tensioning roller.

Fig 1: Removing Cap From Tensioning Roller

G03123317

Courtesy of BMW OF NORTH AMERICA, INC.

Relieve tension on belt drive.

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.

Fig 2: Relieving Tension On Belt Drive

G03123318

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check that belt is correctly positioned on belt pulleys.

Fig 3: Checking Belt & Belt Drive

G03123319

Courtesy of BMW OF NORTH AMERICA, INC.

Version with auxiliary tensioning roller.

Fig 4: Identifying Version With Auxiliary Tensioning Roller

G03123320

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Locking device of auxiliary tensioning roller must snap into groove on alternator.

Fig 5: Identifying Locking Device Of Auxiliary Tensioning

G03123321

Courtesy of BMW OF NORTH AMERICA, INC.

Version on E85.

Fig 6: Identifying Version On E65

G03123322

Courtesy of BMW OF NORTH AMERICA, INC.

Version on E60/E65.

Fig 7: Identifying Version on E85

G03123323

Courtesy of BMW OF NORTH AMERICA, INC.