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

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary Preliminary Tasks:

Disconnect battery negative lead. Refer to 61 21 010 REMOVING AND INSTALLING BATTERY .
Remove suction filter housing. Refer to 13 71 000 REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING .
Remove electric fan with cowl. Refer to 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N62, N62TU) .
Remove alternator drive belt. Refer to 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: Locating Plug On Alternator

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Release screws (1).

Remove alternator (2).

Installation:

Modify guide pulley (2) to new alternator (replace if necessary).

Fig 2: Identifying Alternator Retaining Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Check DME (alternator) for correct operation.