31 21 090 Removing and installing/replacing left or right swivel bearing

WARNING: This page is about a different variant/trim than selected.

Remove FRONT WHEEL .

IMPORTANT: Expand turning lock sufficiently to avoid damaging thread when releasing collar nut.

Fig 1: Identifying Collar Nut On Flattened Area

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Release collar nut (1), press brake pedal to floor for this purpose.

Tightening torque 31 60 2AZ .

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.

Secure collar nut on flattened area (2) of drive shaft by positive peening.

Remove BRAKE DISC .

Remove PULSE GENERATOR FROM SWIVEL BEARING and expose line up to engine carrier

IMPORTANT: To avoid damaging the stabilizer link, remove the STABILIZER LINK FROM THE STABILIZER .

Fig 2: Removing Output Shaft From Wheel Bearing

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Remove TIE ROD END FROM SWIVEL BEARING .

Remove WHEEL GUIDE JOINT FROM SWIVEL BEARING .

Use special tools (see BMW Workshop Catalogue).

Hydraulic unit - BMW part number 81 64 2 155 744
Adapter kit 1 - BMW part number 81 64 2 155 745
Adapter kit 2 - BMW part number 81 64 2 155 746
Adapter - BMW part number 81 64 2 318 661

The following operations describe the way in which the output shaft is pressed out of the drive flange:

The following tools are required to press out the output shaft from the drive flange:

Necessary components:

1	Hydraulic unit
E3	Washer M24
F3	Spindle M24 (length 270 mm)
B2	Adapter
K2	Screws M14 x 1.5

Fig 3: Identifying Necessary Components

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Press swivel bearing (1) outwards and remove output shaft (2) from wheel bearing.

Fig 4: Removing Output Shaft From Wheel Bearing

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Detach brake hose from holder.

Fig 5: Identifying Brake Hose With Holder

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IMPORTANT: Tightening to torque must be effected by means of the screw!

Fig 6: Identifying Swivel Bearing Nut And Screw

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Support swivel bearing with workshop jack.

Slacken nut (2).

Tightening torque 31 31 3AZ .

Pull out screw (1) towards rear and remove swivel bearing.

Installation:

Keep swivel bearing to spring strut connection clean and free from oil and grease.

Note insertion direction of screw.

Replace self-locking nuts.

Replacement

Modify WHEEL BEARING .
Modify BRAKE CARRIER/GUARD PLATE .

The following work steps describe drawing in the output shaft:

The following tools are required to press out the output shaft from the drive flange:

Necessary components:

1	Hydraulic unit
E3	Holding sleeve M24
D1	Washer
F2	Spindle M24 / M20 (length 335 mm)
G4	Adapter M22 x 1.5 to M20

Fig 7: Identifying Necessary Components

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IMPORTANT:

Risk of damage!

The G4 special tool sleeve used has relatively thin walls due to its technical requirements. So that the load limits of the clamping sleeve are not exceeded when pulling in the output shaft, the adapter 81 64 2 318 661 must be used together with a torque wrench.

Fit adapter with torque wrench to hydraulic unit (see illustration).

Set torque wrench to 20 Nm.

Draw in output shaft with hydraulic tool until the torque wrench is activated.

Fig 8: Fitting Adapter And Torque Wrench To Hydraulic Unit

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Apply a light coating of oil to contact surface of collar nut / wheel bearing, and apply tightening force.

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

Tighten new collar nut (1).

For this purpose, press the brake pedal.

Tightening torque: 182 Nm

Secure collar nut on flattened area (2) of drive shaft by positive caulking.

Installation note:

Replace collar nut (1).

Fig 9: Identifying Collar Nut

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After installation

Replacement only: Perform chassis alignment check . See 3200150 KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or 3200155 KDS WHEEL ALIGNMENT CHECK WITH RIDE HEIGHT MEASUREMENT WITHOUT VEHICLE LOAD