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Home >> Mini >> 2017 >> Cooper Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Electrical >> Charging Systems >> Engine Electrical System - Repair (F57) >> 12 31 Alternator With Drive And Attachment >> Removing and installing or replacing alternator (B48, B46) (Cooper S Convertible)

Removing and installing or replacing alternator (B48, B46) (Cooper S Convertible)

Preliminary work needed: 

Removal: 

Release expansion rivet (1).

Release screw (2).

Remove partition wall (3).

G11645540Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector (1) and detach.

Release nut (2) and remove positive battery cable from alternator.

G11645541Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) on bottom of alternator.

NOTE: Screw (1) cannot be removed. The screw (1) is to be removed along with the alternator.
G11645542Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) on top of alternator.

G13859577Courtesy of BMW OF NORTH AMERICA, INC.

Feed out alternator along with the screw (1) on the bottom of the alternator through the slot on the support and remove.

G11645544Courtesy of BMW OF NORTH AMERICA, INC.

Preparation for installation: 

Slightly push back the threaded support sleeve (2) in order to facilitate the installation of the alternator.

Screw in screw (1) into the threaded support sleeve (2). Push back the threaded support sleeve (2) with the aid of the screw (1).

Unscrew the screw (1) from the threaded support sleeve (2) again.

G13859579Courtesy of BMW OF NORTH AMERICA, INC.

Insert the screw (1) into the alternator before installing the alternator.

G11645546Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Feed in the alternator with the screws through the slot (1) on the support and install.

Join both screws.

G11645544Courtesy of BMW OF NORTH AMERICA, INC.

Tighten screw (1).

Tightening torque 12 31 1AZ .

G11645542Courtesy of BMW OF NORTH AMERICA, INC.

Tighten screw (1).

Tightening torque 12 31 1AZ .

G11645543Courtesy of BMW OF NORTH AMERICA, INC.

Attach connector (1).

Connector (1) must engage audibly.

Connect positive battery cable to alternator.

Tighten nut (2).

Tightening torque 12 52 2AZ .

G11645541Courtesy of BMW OF NORTH AMERICA, INC.

Position partition wall (3).

Tighten screw (2).

Attach expanding rivet (1).

G11645540Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: