31 21 180 Replacing Bearing (Wheel Bearing) For Front Wheel

31 21 180 Replacing bearing for front wheel (all-wheel drive vehicle)





Necessary preliminary work:
^ Remove front wheel





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

Tightening torque 31 60 2AZ.





Installation note:
^ Renew 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.
^ Follow installation note of the spur gearing.





Remove brake disc.

Note:
^ Check brake pads and renew if necessary!





Press output shaft on swivel bearing to one side slightly and release screws (1).

Tightening torque 31 21 1AZ.

Remove bearing.





Installation note:
^ Replace screws

^ Keep contact surface (2) of wheel bearing and swivel bearing clean and free from grease.
^ If the wheel bearing is not replaced, all the threaded holes (1) in the wheel bearing must be reconditioned.





Important!
Note on installation must be observed without fail!

Installation note:
^ Spur gearing of bearing (1) and output shaft (2) must be installed tooth in tooth!
^ Tighten collar bolt with compression spring by hand.
^ Check whether spur gearing is locked tooth in tooth by reciprocally rotating wheel hub/output shaft.
^ Tighten collar bolt.
Tightening torque 31 60 2AZ.