11 28 020 Replacing tensioning device for alternator drive belt (N54, N54T)

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove DRIVE BELT

Remove protective cap on deflection pulley.

Remove special tool 11 3 340 .

Release screw (1) on belt tensioner.

Tightening torque 11 28 1AZ .

Fig 1: Removing Screw On Belt Tensioner

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Arrangement and direction of rotation of drive belt.

Fig 2: Identifying Drive Belt Rotation Direction

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.