33 32 064 Removing and installing/replacing left or right swinging arm (640i, 640i xDrive, 650i, 650xi)

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NOTE: If the swinging arm is detached from the integral link/wheel carrier or rear axle support, it is necessary after re-installation to carry out a chassis/wheel alignment check.

Necessary preliminary work:

Remove REAR WHEEL
Remove ANTI-ROLL BAR LINK FROM SWINGING ARM
Remove INTEGRAL LINK FROM SWINGING ARM

Slacken nut (1).

Tightening torque 37 14 5AZ .

Remove jointed rod (2) from swinging arm.

Installation note:

Sensor lever (3) must point from ride height sensor to respective rear wheel.

Replace self-locking nut.

Fig 1: Identifying Swinging Arm Jointed Rod And Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Remove bolt (2) towards rear.

Tightening torque 33 32 3AZ .

Installation note:

Replace self-locking nut.

Fig 2: Identifying Swinging Arm Nut And Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Loosen the screw connection swinging arm on rear axle support only with ring installation tool (1) and extension lever (2).

Release torque > 400 Nm

Ring fitting tool: Order No. 81 64 2 185 817

Extension lever: Order No. 81 64 2 185 816

Fig 3: Identifying Ring Installation Tool And Extension Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) and remove eccentric washer (see magnified area). Pull out eccentric bolt (2).

Tightening torque 33 32 2AZ .

Installation note:

Note direction of insertion of eccentric bolt (2).

Align eccentric bolt (2) by means of marking to rear axle support.

Reinstall eccentric washer (see magnified area).

Replace self-locking nut.

Tighten bolt connection in NORMAL POSITION .

Fig 4: Identifying Swinging Arm Eccentric Bolt And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (3) and remove bolt (4).

Tightening torque 33 32 1AZ .

Installation note:

Replace nut.

Tighten bolt connection in NORMAL POSITION .

After installation:

Check that output shaft is correctly seated in rear axle final drive.
Perform chassis alignment check. See ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or ALIGNMENT CHECK WITH RIDE HEIGHT MEASUREMENT (WITHOUT VEHICLE LOAD) .