11 28 010 Removing and installing/replacing alternator drive belt (N47 D20 O1)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 3 340

Necessary preliminary tasks:

Remove acoustic cover. See 13..... REMOVE ACOUSTIC COVER (N47 D20 O/T1) .

Check drive belt for coolant and oil residues, replace if necessary.

IMPORTANT: The drive belt must be replaced if it is contaminated with hydraulic fluid.

IMPORTANT: Belt tensioner (1) is preloaded.

Fig 1: Identifying Belt Tensioner

G09920793

Courtesy of BMW OF NORTH AMERICA, INC.

Increase preload on tensioning pulley (1) with tool (2) until special tool can be positioned on tensioning pulley 11 3 340 (1).

Preload belt tensioner (1).

Both bore holes, see arrow, must be flush.

Fig 2: Increasing Preload On Tensioning Pulley

G09920794

Courtesy of BMW OF NORTH AMERICA, INC.

Remove drive belt.

Fig 3: Identifying Drive Belt

G09920793

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.