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

WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. 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. Refer to COOLING FAN & COWL .
Remove A/C compressor drive belt. Refer to 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

G03127371

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: Removing Drive Belt

G03127372

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check that belt is correctly positioned on belt pulleys.

Fig 3: Checking Belt Is Correctly Positioned On Belt Pulleys

G03127373

Courtesy of BMW OF NORTH AMERICA, INC.

Version with auxiliary tensioning roller.

Fig 4: Identifying Version With Auxiliary Tensioning Roller

G03127374

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 Roller Snapped Into Groove On Alternator

G03127375

Courtesy of BMW OF NORTH AMERICA, INC.

Version on E85.

Fig 6: Identifying Version On E85

G03127376

Courtesy of BMW OF NORTH AMERICA, INC.

Version on E60/E65.

Fig 7: Identifying Version On E60/E65

G03127377

Courtesy of BMW OF NORTH AMERICA, INC.