31 21 180 Replacing Bearing For Front Wheel (AWD)
Special tools required:
- 22 1 018
- 31 2 113
- 33 2 116
- 33 2 160
- 33 2 201
- 33 3 261
- 33 3 266
- 33 3 268
- 33 4 200
- 33 4 261
- 33 4 262
Do not wash out bearing.
Remove front wheel.
Release collar nut; to do so, press brake pedal to floor.
Remove front brake disk
Force drive flange with special tools 33 2 116 / 33 2 201, 33 2 160, 33 4 200 and 5 wheel bolts out of wheel bearing.
Detach wheel bearing inner race from drive flange.
Remove swivel bearing and clamp with aluminum clamping jaws in vice.
Lift out retaining ring (1).
Pull out bearing with special tools 31 2 113, 33 4 261, 33 3 266 and 33 3 261.
Check dust sleeve, replace if necessary.
Coat bearing seat in swivel bearing over 50 % of its length with Loctite 638.
Wider chamfer of bearing must point to swivel bearing!
Clean press-fit area of new bearing.
Clean bearing seat in swivel bearing and coat over 50 % of its length with Loctite 638.
Align bearing by way of wider chamfer to swivel bearing and draw in with special tools 31 2 113, 22 1 018, 33 4 262 and 33 3 261.
Install new circlip (1).
Draw in drive flange (1) with special tools 31 2 113, 33 3 268, 33 3 266 and 33 3 261.
Install swivel bearing.
Draw output shaft into drive flange.
Install front brake disk.
Install front brake caliper.
Replace collar nut, apply a light coating of oil to contact surface and tighten down.
Tightening torque 31 21 2AZ .
Secure collar nut by peening on flat areas of output shaft.
Install front wheel.