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

Special tools required:

31 2 230

Remove front wheels, see 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL .

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

Installation:

Replace collar nut, apply a light coating of oil to contact surface and tighten down.

Tightening torque: 31 21 2AZ, see 31 21 WHEEL BEARINGS AND STEERING KNUCKLE .

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

Fig 1: Locating Collar Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Remove brake disc, see 34 11 220 REMOVING AND INSTALLING/REPLACING BOTH FRONT BRAKE DISCS .

Replacement only: Drive out drive flange, see 31 21 180 Replacing bearing for front wheel .

Remove front pulse generator from swivel bearing, see 34 52 525 REPLACING ONE FRONT PULSE GENERATOR .

Remove tie rod end from swivel bearing, see 32 21 151 REPLACING LEFT OR RIGHT TIE ROD .

Remove guide joint from swivel bearing, see 31 12 026 Removing and installing/replacing guide joint in swivel bearing .

Remove control arm from swivel bearing, see 31 12 000 Removing and installing/replacing left or right control arm .

Remove stabilizer link from spring strut, see 31 35 005 Removing and installing/replacing push rod (stabilizer link) for left/right stabilizer .

Turn swivel bearing to one side.

Replacement only: Drive out drive flange, see 31 21 180 Replacing bearing for front wheel .

Support swivel bearing (1) with workshop jack and a suitable mounting.

Release nut and remove bolt (2) towards front.

Expand swivel bearing (1) with special tool 31 2 230.

Lower workshop jack.

Remove swivel bearing (1).

Installation:

Replace self-locking nut.

Tightening torque: 31 31 3AZ, see 31 31 SPRING STRUTS .

Fig 2: Special Tool (31 2 230), Swivel Bearing And Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Spread swivel bearing (1) with special tool 31 2 230 , align by means of gap to positioning pins (2) on back of spring strut and raise as far as it will go.

Fig 3: Special Tool (31 2 230) And Swivel Bearing

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Modify dust sleeve (1).

Modify brake guard plate (2).

Installation:

Install new wheel bearing, see 31 21 180 Replacing bearing for front wheel .

Replacement only: Draw in drive flange, see 31 21 180 Replacing bearing for front wheel .

Fig 4: Dust Sleeve And Brake Guard Plate

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Perform chassis alignment check, see 32 00 ... CHASSIS/WHEEL ALIGNMENT CHECK PROCEDURE .