31 21 090 Removing and Installing/Replacing Left or Right Swivel Bearing

31 21 090 - Replacing (removing and installing) left or right swivel bearing (AWD)





Special tools required:





Remove front wheel 36 10 300 Removing or Installing Front or Rear Wheel.

Important!
Expand turning lock sufficiently to avoid damaging thread when releasing collar nut.

Release collar nut; to do so, press brake pedal to floor.

Installation Note:
Replace collar nut, oil collar nut/wheel bearing contact surface only and tighten down.

No oil permitted on thread of shaft journal or collar nut.

Tightening torque 31 21 2AZ Front Axle.

Secure collar nut by positive peening on flat areas of output shaft.





Remove brake disc.

Replacement only: Drive out wheel hub 31 21 180 Replacing Bearing (Wheel Bearing) For Front Wheel.

Remove pulse generator from swivel bearing 34 52 525 Replacing One Front Pulse Generator.

Remove tie rod end from swivel bearing 32 21 151 Replacing Left or Right Tie Rod.

Remove guide joint from swivel bearing 31 12 026 Removing and Installing/Replacing Guide Joint In Swivel Bearing.

Remove control arm from swivel bearing 31 12 000 Removing and Installing/Replacing Left or Right Control Arm.

Remove stabilizer link from spring strut 31 35 005 Removing and Installing/Replacing Push Rod (Stabilizer Link) For Left/Right Stabilizer.

Turn swivel bearing to one side.

Press output shaft out of wheel hub 31 60 ... Pressing Output Shaft Out of Drive Flange (Wheel Hub) and Drawing In and tie up.





Important!
- Check sensor head and line from pulse generator prior to installation for external damage, replacing if necessary.





Support swivel bearing with workshop jack and a suitable mounting.

Release nut (1), remove holder (2) and remove screw (3).

Spread swivel bearing with special tool 31 2 230.

Lower workshop jack and remove swivel bearing.

Installation Note:
Keep press fit of swivel gearing and spring strut in lower area clean and free from oil and grease.

Screw head must point in direction of travel.

Replace self-locking nut.

Tightening torque 31 31 3AZ 31 31 Spring Struts (Front).





Installation Note:
Expand swivel bearing with special tool 31 2 230, align by way of gap to positioning pins (1) on back of spring strut and raise up to stop.





Replacement:

- Replace dust sleeve (1)
- Modify or replace brake carrier/brake guard plate 34 11 250 Replacing Front Left or Right Brake Anchor Plate/Guard Plate
- Install new wheel bearing 31 21 180 Replacing Bearing (Wheel Bearing) For Front Wheel.
- Draw in wheel hub 31 21 180 Replacing Bearing (Wheel Bearing) For Front Wheel.





After installation:

- Replacement only: Perform chassis alignment check