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

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. 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 11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56) .
Remove A/C compressor drive belt. Refer to 11 28 050 REPLACING A/C COMPRESSOR DRIVE BELT (M52 / S52 / M52TU / M54 / M56) .

Remove cap from tensioning roller.

Fig 1: Removing Cap From Tensioning Roller

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Relieve tension on belt drive.

Fig 2: Relieving Tension On Belt Drive

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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.

Installation:

Check that belt is correctly positioned on belt pulleys.

Fig 3: Checking Belt Is Correctly Positioned On Belt Pulleys

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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

Courtesy of BMW OF NORTH AMERICA, INC.