31 21 180 Replacing Bearing (Wheel Bearing) For Front Wheel

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

81 64 2 155 744
81 64 2 155 745
81 64 2 155 746
81 64 2 318 661

IMPORTANT: Bearing can not be dismantled.
Do not wash out bearing.

Necessary preliminary tasks:

Remove FRONT WHEEL

IMPORTANT: Expand anti-twist lock sufficiently to avoid damaging thread when releasing collar nut.

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

Tightening torque 31 21 2AZ .

Installation note:

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

Fig 1: Locating Collar Nut

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Remove BRAKE DISC

Release screw (1) and pull pulse sensor out of bore.

Tightening torque 34 51 3AZ .

Installation note:

Clean bore for pulse sensor and lubricate with Staburags NBU 12/K lubricating grease.

Fig 2: Pulse Sensor And Holder Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (2) and remove holder from swivel bearing.

NOTE: Output shaft has been removed only for the purpose of creating the picture.

Release bolts (1) and remove wheel bearing.

Tightening torque 31 21 1AZ .

Installation note:

Replace screws.

Fig 3: Bolts Of Wheel Bearing

Courtesy of BMW OF NORTH AMERICA, INC.

Use special tool .

Hydraulic unit - 81 64 2 155 744
Adapter kit 1 - 81 64 2 155 745
Adapter kit 2 - 81 64 2 155 746

The following work steps describe pressing out the output shaft/wheel bearing:

Fig 4: Pressing Output Shaft From Drive Flange

Courtesy of BMW OF NORTH AMERICA, INC.

The following tools are required to press out the output shaft from the drive flange, see graphic for arrangement:

Vehicle components:

I	Drive flange hub
II	Wheel bearing/swivel bearing

Necessary components:

1	Hydraulic unit
E3	Washer M24
F3	Spindle M24 (length 270 mm)
C1	Holding sleeve
K2	Screws M14 x 1.5
B1	Adapter

Secure output shaft against falling out.
Press out output shaft with hydraulic unit.

IMPORTANT: Do not damage inner race (1) of wheel bearing.

Installation note:

Keep contact surface of swivel bearing and wheel bearing clean and free from oil and grease.

Fig 5: Inner Race Of Wheel Bearing

Courtesy of BMW OF NORTH AMERICA, INC.

The following work steps describe drawing in the output shaft/wheel bearing:

Fig 6: Fitting Output Shaft From Drive Flange

Courtesy of BMW OF NORTH AMERICA, INC.

The following tools are required to fit the output shaft in the drive flange, see graphic for arrangement:

Vehicle components:

I	Drive flange hub
II	Wheel bearing/swivel bearing
III	Output shaft

Required components for all models and types:

1	Hydraulic unit
E1	Holding sleeveM24
D1	Washer
F2	Spindle M24/M20 (length 335 mm)

Components specific to model and type (thread diameter, output shaft):

G1	Adapter M22 x 1.5 to M20
G2	Adapter M24 x 1.5 to M20
G3	Adapter M27 x 1.5 to M20

Fig 7: Pulling Output Shaft Using Tool

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage!
Due to the technical requirements, the special tool used, sleeve G,* is relatively thin-walled.
So that the load limit of the clamping sleeve is not exceeded when pulling in the output shaft, you must use the adapter 81 64 2 318 661 together with a torque wrench.

Fit adapter with torque wrench to hydraulic unit (see Fig 7).

Set torque wrench to 20 Nm .

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