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Home >> BMW >> 2010 >> 760Li >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Engine Electrical System - Repair >> Alternator With Drive And Mounting >> 12 31 020 Removing and installing or replacing alternator (N74)

12 31 020 Removing and installing or replacing alternator (N74)

Necessary preliminary tasks: 

Slacken nut (1).

Release hydraulic fluid lines from holder on alternator.

Fig 1: Identifying Alternator Slacken Nut
G08469627Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (2) below alternator.

Tightening torque: see 1AZ in 12 31 ALTERNATOR WITH DRIVE AND MOUNTING PARTS .

Fig 2: Identifying Alternator Screws
G08469628Courtesy of BMW OF NORTH AMERICA, INC.

Tighten screws (2) above alternator.

Tightening torque: see 1AZ in 12 31 ALTERNATOR WITH DRIVE AND MOUNTING PARTS .

Pull alternator towards front a little.

Unlock plug (2) and detach from alternator.

Detach cover (3) and release nut underneath.

Tightening torque: see 1AZ in 12 42 ALTERNATOR LEAD .

Disconnect battery positive lead from alternator

Feed out alternator towards front and remove.

Fig 3: Identifying Alternator Cover, Plug And Screw
G08469629Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Reassemble the vehicle.

Check stored fault message.

Delete fault memory.