31 12 004 Removing and installing/replacing bottom left or right control arm (all-wheel drive vehicle)

WARNING: This page is about a different variant/trim than selected.

NOTE: If the lower wishbone is detached from the front axle support, it is necessary after installation to carry out a wheel alignment . See 32 00 150 KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION and 32 00 155 KDS WHEEL ALIGNMENT CHECK WITH RIDE HEIGHT MEASUREMENT WITHOUT VEHICLE LOAD .

Necessary preliminary work:

Release nut (1) and remove screw.

Tightening torque 31 12 7AZ .

Release spring strut shock absorber from control arm.

Installation note:

Note direction of insertion of screw.

Replace screw and nut.

Tighten down screw connection in NORMAL POSITION .

Fig 1: Releasing Spring Strut Shock Absorber From Control Arm

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (2).

Tightening torque 31 12 8AZ .

Release lower wishbone/wheel control joint from swivel bearing.

Installation note:

Replace self-locking nut.

Keep wheel control joint to swivel bearing connection clean and free from oil and grease.

Adhere to the assembly sequence.

Release nut (1) and remove screw.

Tightening torque 31 12 3AZ .

Remove wishbone (2).

Installation note:

Note direction of insertion of screw.

Replace screw and nut.

Tighten down screw connection in NORMAL POSITION .

Replacement:

Replace wheel control joint at wishbone.

Fig 2: Identifying Wishbone Nut
Courtesy of BMW OF NORTH AMERICA, INC.

After installation: