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

Special tools required: 

• 31 2 230

Remove FRONT WHEEL .

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

Installation: 

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 .

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

Remove BRAKE DISC .

Replacement only: Drive out WHEEL HUB .

Remove PULSE GENERATOR FROM SWIVEL BEARING .

Remove TIE ROD END FROM SWIVEL BEARING .

Remove GUIDE JOINT FROM SWIVEL BEARING .

Remove CONTROL ARM FROM SWIVEL BEARING .

Remove STABILIZER LINK FROM SPRING STRUT .

Turn swivel bearing to one side.

Press OUTPUT SHAFT OUT OF WHEEL HUB  and tie up.

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: 

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 .

Installation: 

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
• Install new WHEEL BEARING .
• Draw in WHEEL HUB .

After installation: 

• Replacement only: Perform chassis alignment check  . See 32 00 150 KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or 32 00 155 KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH RIDE HEIGHT MEASUREMENT WITHOUT VEHICLE LOAD .