33 41 180 Replacing bearing for rear wheel (all-wheel drive vehicles)

Special tools required:

81 64 2 155 744
81 64 2 294 517
81 64 2 318 661
2 318 661

Necessary preliminary work:

Remove REAR WHEEL .

IMPORTANT: Expand anti-twist lock sufficiently to avoid damaging thread when releasing collar nut (1).

Activate parking brake and release collar nut (1).

Tightening torque 33 41 2AZ .

Installation note:

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

Fig 1: Identifying Collar Nut

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Remove BRAKE DISC .

(For more simple schematic diagram: illustration without output shaft.)

Release screw (1) and remove pulse sensor.

Tightening torque 34 51 4AZ .

Unfasten screws (2).

Tightening torque 33 41 1AZ . (Apply crosswise)

Fig 2: Identifying Pulse Sensor Screw And Wheel Hub Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Use special tools:

Hydraulic unit - 81 64 2 155 744
Adapter kit - 81 64 2 294 517
Adapter for torque wrench - 81 64 2 318 661

The following operations describe the procedure for pulling the wheel bearing/wheel hub off the output shaft:

Fig 3: Pulling Wheel Bearing/Wheel Hub Off Output Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

The following tools are required to pull the wheel bearing/wheel hub off the output shaft; see illustration for arrangement:

Vehicle components:

I	Drive flange hub
II	Wheel carrier/swivel bearing

Required special tool components:

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

Pull wheel bearing off the output shaft using the hydraulic tool.

IMPORTANT: Secure wheel bearing with flange-mounted special tool to prevent it from falling.

Installation note:

Keep contact surface (2) of wheel bearing and trailing arm clean and free from grease.

Fig 4: Installing Wheel Bearing

Courtesy of BMW OF NORTH AMERICA, INC.

The following operations describe the procedure for pulling the wheel bearing/wheel hub onto the output shaft:

Fig 5: Pulling Wheel Bearing/Wheel Hub Onto Output Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

The following tools are required to pull the wheel bearing/wheel hub onto the output shaft; see illustration for arrangement:

Vehicle components:

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

Required special tool components:

1	Hydraulic unit
E1	Holding sleeve M24
D1	Washer
F2	Spindle M24/M20 (length 335 mm)
G4	Adapter M22 x 1.5 to M20
	Adapter for torque wrench

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, you must use the adapter 2 318 661 together with a torque wrench.

Fig 6: Installing Adapter To Hydraulic Unit Using Torque Wrench

Courtesy of BMW OF NORTH AMERICA, INC.

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

Set torque wrench to 20 Nm.

Pull wheel bearing/wheel hub onto output shaft with hydraulic tool until the torque wrench is triggered.