31 21 090 Replacing (Removing And Installing) Left Or Right Swivel Bearing

Special tools required: 

• 31 2 200 

Necessary preliminary tasks: 

• Remove brake disk  . See 34 11 220 REMOVING AND INSTALLING/REPLACING BOTH FRONT BRAKE DISCS .
• Remove pulse generator from swivel bearing  . See 34 52 525 REPLACING ONE FRONT PULSE GENERATOR .
• Remove control arm from swivel bearing  . See 31 12 000 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT CONTROL ARM .
• Remove tie rod end from swivel bearing  . See 31 21 090 REPLACING (REMOVING AND INSTALLING) LEFT OR RIGHT SWIVEL BEARING .
• Remove tension strut from swivel bearing  . See 31 12 080 REMOVING AND INSTALLING/REPLACING BOTH TENSION STRUTS .

After installation:

• Replacement only: Perform chassis alignment check  . See 32 00 ... CHASSIS/WHEEL ALIGNMENT CHECK PROCEDURE .

Support swivel bearing with workshop jack and a suitable mounting.

Release nut and remove holder for brake hose, pulse generator and if necessary brake pad sensor.

Remove screw towards front.

Spread swivel bearing with special tool 31 2 200  .

Lower workshop jack and remove swivel bearing.

Installation: 

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

Spread swivel bearing with special tool 31 2 200  , align by means of gap to web on back of spring strut and raise as far as it will go.

Replace self-locking nut.

Tightening torque 31 31 3AZ  . See FRONT AXLE - TIGHTENING TORQUES .

Replacement only: 

Modify or if necessary replace wheel bearing  . See 31 21 180 REPLACING BEARINGS (WHEEL HUB) FOR FRONT WHEEL .

Modify brake guard plate  . See 34 11 250 REMOVING AND INSTALLING/REPLACING A BRAKE CARRIER/BRAKE GUARD PLATE AT FRONT .