11 28 010 Replacing alternator drive belt (N63)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

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

Installation:

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

Necessary preliminary tasks:

Remove fan cowl . See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N63) .
Release expansion tank for intercooler from mounting and press forwards. See ENGINE RADIATOR .

Coolant hoses do not need to be released!

IMPORTANT: Belt tensioner is under high initial spring tension.

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

Secure special tool 11 3 340 in special tool bore (2).

Belt tensioner in assembly position.

Remove drive belt.

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

Fig 1: Drive Belt Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Belt tensioner is under high initial spring tension.

Put on the drive belt.

Remove special tool 11 3 340 in special tool bore (2).

Slowly relieve tension on belt tensioner (1).

Installation:

Make sure drive belt is in correct installation position.

Fig 2: Drive Belt Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.