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

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Special tools required:

2 358 630
23 4 150
2 406 773
33 5 120
0 496 862
33 5 122
33 5 200
2 406 774

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CAUTION:

The rear axle final drive must not be tilted by more than 45° during the installation procedure.
The circlips on both output shafts must be replaced!

NOTE:

The new rear axle differential is delivered with all oils completely filled.

The oil level therefore does not have to be checked.
In rare cases, oil escaping during transport can contaminate the new rear axle differential. In this case, the OIL LEVEL must be checked in rear axle differential and adjusted. The hang-on clutch can be completely drained and If oil has leaked through the breather on the clutch on the rear axle differential, the breather must be replaced.

Necessary preliminary work:

Refer to REMOVING RIGHT REAR WHEEL .
Refer to REMOVING COMPLETE EXHAUST SYSTEM .
Remove heat shields. Refer to REMOVING FRONT HEAT SHIELD , and REMOVING HEAT SHIELD AT REAR , and REMOVING HEAT SHIELD AT UPPER EXHAUST TURBOCHARGER .
Refer to REMOVING AND TYING BACK PROPELLER SHAFT ON REAR AXLE FINAL DRIVE .
Remove the RIGHT TANK COVER .
Refer to REMOVING RIGHT COIL SPRING .

Removal:

Unfasten screws (1).

Remove cover (2).

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Disconnect connector (1) from control unit.

Loosen cable (2) from control unit holder.

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Secure special tool 2 358 630 with wheel studs to drive flange.

Press wheel hub upward with special tool 2 358 630 and workshop jack.

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Support the rear axle differential (1) with the universal jack and special tool 23 4 150.

Secure rear axle differential against falling out with tensioning strap (2).

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Insert support tool 2 406 773 into the bore hole on the rear axle differential.

Press the left and right output shafts with the special tool 33 5 120 and shaped element 0 496 862 with jerky movements from the rear axle differential.

Position the thrust piece of screw 33 5 122 on support tool 2 406 773.

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Release screw (1) of rear axle differential.

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Undo screws (1) on left and right of cross member (2) (right side identical).

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Lower rear axle differential (1).

Feed output shafts out of differential by shifting rear axle differential sideways.

Remove rear axle final drive.

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Do not allow output shafts (1) to hang in the joints.

Tie up the output shafts (1).

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Installation:

Remove the rear axle differential to be replaced from the special tool 33 5 200.

Place new rear axle differential on special tool 33 5 200 and secure with tensioning strap.

Convert CROSS MEMBER on rear axle support.

Replace circlip of output shafts.

Parts: Circlips

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CAUTION: Before feeding in the output shafts, make sure that the installation protection rings are installed.

Fold open installation protection rings (1) on left and right.

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Feed output shafts (1) into the differential on the left and right by shifting the rear axle differential (2) to the side.

After feeding in the output shafts, pull the tab (3) of the installation protection ring until one of the two predetermined breaking points gives way.

Pull out the installation protection rings (3) and dispose of them.