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

WARNING: This page is about a different car, the 2005 BMW Z4, 2004 BMW Z4, and 2003 BMW Z4. 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 A/C compressor drive belt See 11 28 050 Replacing A/C Compressor Drive Belt (M52 / S52 / M52TU / M54 / M56) .
E85/E60: Remove radiator cover See RADIATOR COVER .
E85/E60: Remove fan cowl See FAN COWL .

Remove cap from tensioning roller.

Fig 1: Removing Cap From Tensioning Roller

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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

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Installation:

Check that belt is correctly positioned on belt pulleys.

Fig 3: Checking Belt

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Version with auxiliary tensioning roller.

Fig 4: Identifying Version With Auxiliary Tensioning Roller

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Installation:

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

Fig 5: Identifying Locking Device Of Auxiliary Tensioning Roller

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Version on E85.

Fig 6: Identifying Version On E85

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Version on E60/E65.

Fig 7: Identifying Version On E60/E65

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