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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1660 (Engine And Transmission Mounting - Repair) >> Engine Mounting >> 22 11 110 Replacing left engine support arm (N52/N52K/N53)

22 11 110 Replacing left engine support arm (N52/N52K/N53)

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IMPORTANT: Aluminium-magnesium materials. 
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released. 
The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage  ).

Necessary preliminary tasks: 

Fig 1: Identifying Screws And Engine Support Arm
G05476279Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Replace aluminum screws.

Release screws and remove engine support arm (1).

Tightening torque and angle of rotation 22 11 3AZ  . See ENGINE AND GEARBOX SUSPENSION - TIGHTENING TORQUES .