Replacing the radial shaft seal

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WARNING: Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly.
Danger! Immobilization period-threatening injuries!

Observe safety instructions on raising the vehicle using a vehicle hoist.
For additional information see: SECURING ENGINE IN INSTALLATION POSITION (X4 xDrive30i 2019-2021), MOVING THE ENGINE TO THE INSTALLATION POSITION (X4 xDrive30i 2022-), or MOVING THE ENGINE TO THE INSTALLATION POSITION (X4 M40i).

Preliminary work

Refer to REMOVING THE FRONT LEFT WHEEL .
Refer to REMOVING THE COVER OF THE STEERING ASSEMBLY .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to RELEASING THE TIE ROD FROM THE SWIVEL BEARING .
Refer to LOOSENING THE OUTPUT SHAFT FROM THE WHEEL BEARING .
Refer to RELEASING THE WISHBONE FROM THE SWIVEL BEARING .
Refer to REMOVING OUTPUT SHAFT .

NOTE: TECHNICAL INFORMATION
Radial shaft seal ring are equipped with an installation protection ring. The installation protection ring is used to protect the sealing lip when installing the output shaft.

NOTE: The figure shows the procedure for the front differential. The procedure for the bearing bracket is identical.

Remove the radial shaft seal

Prepare the special tool 0 490 466 (00 5 010) with the special tools 0 494 649 (21 2 230) (without the screw) and 0 493 384 (11 1 212).

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Pull out and remove the radial shaft seal (1) with the special tools 0 490 466 (00 5 010), 0 494 649 (21 2 230) and 0 493 384 (11 1 212).

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Remove the assembly protection ring (1) from the radial shaft sealing ring (2).

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Replace radial shaft seal at front.
Parts: Radial shaft seal

Install the radial shaft seal

Coat the housing of the sheet metal flange of the radial shaft seal with the approved front differential fluid.
Drive in the radial shaft seal to the stop using special tool 0 493 539 (31 5 130).
Remove the special tool 0 493 539 (31 5 130).

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Reinstall installation protection ring (1) in radial shaft seal (2).

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Follow-up work

Refer to INSTALLING THE OUTPUT SHAFT .
Refer to POSITIONING THE OUTPUT SHAFT ON THE SWIVEL BEARING .
Refer to TOPPING UP/CHECKING FRONT DIFFERENTIAL OIL .
Refer to PLACING THE OUTPUT SHAFT ASIDE .
Refer to SECURING THE WISHBONE AT THE SWIVEL BEARING .
Refer to FASTENING THE OUTPUT SHAFT ON THE WHEEL BEARING .
Refer to SECURING THE TIE ROD ON THE SWIVEL BEARING .
Refer to INSTALLING THE CENTER UNDERBODY PROTECTION .
Refer to INSTALLING THE COVER OF THE STEERING ASSEMBLY .
Refer to ATTACHING THE FRONT LEFT WHEEL .