31 12 000 Removing and installing/replacing left or right wishbone

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If the wishbone is detached from the front axle support, it is necessary after reinstallation to carry out a wheel/chassis alignment check.

Necessary preliminary tasks:

Remove FRONT UNDERBODY PROTECTION

Remove jointed rod of ride height sensor on right wishbone.

Fig 1: Locating Ride Height Sensor Jointed Rod

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1), if necessary, counter-hold at inner Torx (T40).

Tightening torque 31 12 4AZ .

Installation note:

Keep wishbone to swivel bearing connection clean and free from oil and grease.

Replace self-locking nut.

Fig 2: Identifying Control Arm Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release EAR CLIP (1).

Move gaiter (2) onto track rod (3).

Installation note:

Clean rack and check surface for damage (corrosion)

Fig 3: Moving Gaiter Onto Track Rod

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Tightening torque 31 12 3AZ .

Remove bolt (2) towards front.

Take off wishbone.

Installation note:

Screw head must point in direction of travel.

Replace screw and self-locking nut.

Tighten down bolt connection in NORMAL POSITION .

Fig 4: Identifying Wishbone Bolt And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Perform chassis/wheel alignment check. See ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or ALIGNMENT CHECK WITH RIDE HEIGHT MEASUREMENT (WITHOUT VEHICLE LOAD) .
Carry out STEERING ANGLE SENSOR ADJUSTMENT