Replacing drive flange on left/right rear axle shaft

Necessary preliminary work:

Remove REAR WHEEL .

Removal:

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

Activate parking brake.

Unfasten collar nut (1).

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Remove PARKING BRAKE SHOES .

Use special tools:

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

Courtesy of BMW OF NORTH AMERICA, INC.

The following tools are required to pull out the drive flange hub from the wheel bearing; see illustration for arrangement:

Vehicle components:

I	Drive flange hub
II	Wheel carrier

Required components for all models and types:

E3	Washer
B1	Adapter
E1	Holding sleeve M24
F1	Spindle M24/M20 (length 425 mm)
1	Hydraulic unit
A1	Device

* Components specific to model and type:

M5	Adapter diameter 90 mm
K3	Screws M12 x 1.5

Installation:

IMPORTANT: The wheel bearing is destroyed when the drive flange is removed and cannot be reused!

Replace WHEEL BEARING .

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The following tools are required to insert the drive flange hub; see illustration for arrangement:

Vehicle components:

I	Drive flange hub
II	Wheel carrier
III	Output shaft

Required components for all models and types:

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

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

G3	Adapter M27 x 1.5 to M20

Installation note:

Oil drive flange lightly and attach to gearing of output shaft.

The output shaft and drive flange may be inserted in the same procedure.

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IMPORTANT: Risk of damage!

Due to the technical requirements, the special tool used, sleeve G,* is relatively thin-walled. To ensure that the load limit of the tensioning sleeve is not exceeded when drawing in the output shaft, it is essential to use adapter 81 64 2 318 661 in combination 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.

Installing PARKING BRAKE SHOES .
Assemble the brake.

Part : Replace collar nut (1).

Tighten collar nut (1), activate parking brake for this purpose.

Tightening torque 33 41 1AZ .

Secure collar nut (1) by positive peening at flat areas of output shaft.

Installation note:

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

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Install REAR WHEEL .
Adjust PARKING BRAKE .