12 31 020 Removing and installing/replacing alternator (N62)

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Disconnect battery negative lead .
Remove suction filter housing . See 13 71 000 REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING .
Remove electric fan with cowl. See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N62, N62TU) .
Remove alternator drive belt . See 11 28 010 REPLACING ALTERNATOR DRIVE BELT (N62/N62TU) .

Disconnect plug (3) from alternator.

Unscrew nut (1).

Lay B+ line (2) to one side.

Fig 1: Identifying Plug, Nut And B+ Line

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove alternator (2).

Installation:

Modify guide pulley (3) to new alternator (replace if necessary).

Fig 2: Identifying Guide Pulley, Alternator And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Check DME (alternator) for correct operation.