31 21 088 Removing and installing left or right swivel bearing (all-wheel drive vehicle)

Necessary preliminary tasks:

Release collar bolt (1), press brake pedal to floor for this purpose.

Tightening torque 31 60 2AZ .

Fig 1: Identifying Collar Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace collar bolt (1) and compression spring (2).
Pay attention to direction of installation of compression spring!
Keep collar bolt and spur gearing of bearing/output shaft clean and free of grease.

IMPORTANT: See installation note on spur gear.

Fig 2: Identifying Compression Spring And Collar Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Secure swivel bearing against falling out.

Remove BRAKE DISC .
Expose brake hose and cable on swivel bearing.
REMOVE pulse sensor from swivel bearing.
REMOVE lower wishbone from swivel bearing.
REMOVE trailing link from swivel bearing
REMOVE track rod end from swivel bearing.
Remove . See 31 12 002 REMOVING AND INSTALLING/REPLACING TOP LEFT WISHBONE or 31 12 003 REMOVING AND INSTALLING/REPLACING TOP RIGHT WISHBONE (M6) upper wishbone from swivel bearing.

Fig 3: Identifying Wheel Bearing Assembly
Courtesy of BMW OF NORTH AMERICA, INC.

Remove swivel bearing.

IMPORTANT: Note on installation for spur gearing must be observed without fail!

Installation note:

Spur gearing of bearing (1) and output shaft (2) must be installed form-fit (tooth in tooth)!
Tighten collar bolt and compression spring by hand.
Check whether spur gearing is locked tooth in tooth by reciprocally rotating wheel hub/output shaft.
Once a form-fit has been ensured, tighten to final torque.
Tightening torque 31 60 2AZ .

Fig 4: Identifying Spur Gearing Of Bearing And Output Shaft Installed Position
Courtesy of BMW OF NORTH AMERICA, INC.