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61 20 900 Disconnecting And Connecting Battery Negative Lead

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WARNING: Observe safety instructions for handling vehicle battery. Refer to 61 00... SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY . Follow instructions for disconnecting and connecting battery. Refer to 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Necessary Preliminary Tasks: 

Loosen nut (1).

Tightening torque, refer to 61 21 1AZ in GENERAL ELECTRICAL SYSTEM - TIGHTENING TORQUES .

IMPORTANT: Do not under any circumstances use force to pull off pole shoe.

Do not under any circumstances release socket-head cap screw of IBS.

Detach battery negative lead with IBS towards top, lay to one side and secure.

Fig 1: Battery Negative Lead Retaining Nut
G03293817Courtesy of BMW OF NORTH AMERICA, INC.