11 28 010 Replacing alternator drive belt (M62)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. 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.

Remove fan clutch with impeller,

refer to 11 52 020 REMOVING AND INSTALLING OR REPLACING FAN COUPLING (M62) .

Layout of drive belt.

Fig 1: Layout Of Drive Belt

G03152210

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken screws (1) and relieve tension on belt drive.

NOTE: Release screw (1 and 2) to remove complete belt tensioner.

Remove drive belt.

CAUTION: You must replace the drive belt if it is contaminated with hydraulic fluid.

Installation

Check drive belt for coolant and oil residue and replace if necessary.

Fig 2: Slackening Screws From Tension On Belt Drive

G03152211

Courtesy of BMW OF NORTH AMERICA, INC.

Installation

Mount drive belt and check that it is correctly positioned on belt pulleys.

Pretension adjustable plate at hexagon head (1) up to end of elongated hole (2) and tighten down screws (3).

CAUTION: Screws (3) up to 9/98
M8 strength class 8.8 tightening torque 22 Nm.

Fig 3: Aligning Pretension Adjustable Plate At Hexagon Head

G03152212

Courtesy of BMW OF NORTH AMERICA, INC.

Screws (3) from 9/98 with liquid-cooled alternator

M8 strength class 10.9 tightening torque 30 Nm.