Replacing rear axle support (AWD) (X2 xDrive 28i 2018-2023, X2 M35i 2019-2022)

Necessary preliminary work: 

• Refer to REMOVING REAR WHEELS .
• Refer to REMOVING COMPLETE EXHAUST SYSTEM .
• Refer to REMOVING REAR AXLE FINAL DRIVE .
• Refer to REMOVING THE LEFT AND RIGHT TRAILING ARM COVERS .
• Refer to REMOVING TANK COVER ON LEFT AND RIGHT .

Removal: 

Lever out the protective cap (1) to the left and right.

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Release collar bolt (1) to the left and right and to do this press the brake pedal.

Remove the left and right output shafts.

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Press brake pedal down to floor and secure with pedal support.

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• Remove all wishbones. Refer to TRAILING ARMS AND STRUTS 

Release hollow nut (2).

Detach brake hose (1) on left and right from brake line.

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Only for rear ride height sensor:

Disconnect connector (1).

Release screw (2).

Remove ride height sensor.

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Support rear axle support (1) with workshop jack (2).

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Release screws (1) from rear axle support (2).

Lower rear axle support by approx. 10 cm.

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Release screws (1) from anti-roll bar (2).

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Remove rear axle support.

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Installation: 

Position rear axle support with workshop jack on vehicle.

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Tighten down anti-roll bar (2) with screws (1) on rear axle support.

Tightening torque 33 55 3AZ .

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Tighten down rear axle support (2) with screws (1) on vehicle.

Tightening torque 33 31 1AZ .

Lower workshop jack and put away.

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Only for rear ride height sensor:

Position ride height sensor.

Tighten screw (2).

Tightening torque 37 14 3AZ .

Connect the connector (1).

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Connect brake hose (1) on left and right to brake line.

Tighten down hollow nut (2).

See TIGHTENING TORQUE .

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• Install all wishbones. Refer to TRAILING ARMS AND STRUTS 
• Bleed brake system.

• Pay attention to installation position of compression spring (2).
• Keep collar bolt and spur gearing of wheel bearing/output shaft clean and free from grease

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Position the left and right output shafts at the wheel bearing.

Part:  Replace the collar bolts and compression springs.

Tighten collar bolt (1) and compression spring hand-tight.

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• Spur gearing of wheel bearing (1) and output shaft (2) must be installed form-fit (tooth in tooth position)!

Check whether spur gearing is locked tooth in tooth by reciprocally rotating wheel hub/output shaft.

Once a form-fit has been ensured, tighten to final torque.

Tightening torque 33 41 2AZ .

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Fit the left and right protective caps (1).

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Release pedal support.

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Required follow-up work: 

• Refer to INSTALLING REAR AXLE DIFFERENTIAL .
• Refer to INSTALLING TANK COVER ON LEFT AND RIGHT .
• Refer to INSTALLING INSTALL EXHAUST SYSTEM .
• Refer to INSTALLING REAR WHEELS .
• Refer to CARRYING OUT WHEEL ALIGNMENT PROCEDURE .