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

31 21 180 Replacing bearing for front wheel





Necessary preliminary work:
^ Remove front wheel.
^ Remove pulse generator from swivel bearing





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 installation position of compression spring (2).
^ Keep collar bolt and spur toothing of bearing/propeller shaft clean and free of grease
^ Follow installation note of the spur gearing.





Remove brake disc.

Note:
^ Check brake pad and replace 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.

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 to 10 Nm.
^ 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.