11 28 010 Replacing drive belt for alternator (N63)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 3 340

IMPORTANT: If contaminated with hydraulic fluid: Replace drive belt.

Installation note:

If the drive belt is to be reused, mark direction of travel and reinstall drive belt in same direction of rotation.

Necessary preliminary work:

Remove FAN COWL
Release EXPANSION TANK for charge air cooler from bracket and press forwards

Coolant hoses do not need to be released!

IMPORTANT: Belt tensioner is under high initial spring preload.

Slowly and carefully pretension belt tensioner (1) in direction of arrow up to stop.

Secure special tool 11 3 340 in dowel hole (2).

Belt tensioner in installation position.

Remove drive belt.

Fig 1: Turning Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: On vehicles which do not have a power steering pump, a deflecting element (3) is fitted in place of the power steering pump.

IMPORTANT: Belt tensioner is under high initial spring preload.

Put on the drive belt.

Remove special tool 11 3 340 from dowel hole (2).

Slowly relieve tension on belt tensioner (1).

Fig 2: Turning Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Make sure drive belt is in correct installation position.

Assemble engine.