27 21 020 Replacing radial shaft seal for output flange (ATC 700)

WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

23 0 490
27 1 480

IMPORTANT: After completing work, check GEAR OIL LEVEL and top up if necessary.
Use only approved oil for this transfer box: Transfer-box oil TF0870, BMW part number 83 22 0 397 244 (1-litre can)

Necessary preliminary tasks:

Remove propeller shaft
Release exhaust system bracket
Remove CROSS MEMBER .

Release circlip (1).

Fig 1: Identifying Circlip

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Installation note:

Replace O-ring in output flange.

Check that O-ring is in correct position.

Fig 2: Identifying O-Ring

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IMPORTANT: The transmission shaft may move when the output flange is pushed on. The circlip can thus no longer be fitted.

Installation note:

Push on output flange
Using 2 screwdrivers, press output flange downwards or output shaft (2) upwards until groove for circlip is completely visible.
Fit circlip.

Fig 3: Pressing Output Flange Downwards Or Output Shaft Upwards Using Screwdrivers
Courtesy of BMW OF NORTH AMERICA, INC.

Drive a hole into radial shaft seal (1) using a center punch (2).

IMPORTANT: Do not use a drill as drillings may result in transmission malfunction.

Fig 4: Driving Hole Into Radial Shaft Seal Using Centre Punch

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Screw in special tool 23 0 490 .

Drive out radial shaft seal (1) with impact weight (2).

Fig 5: Driving Out Radial Shaft Seal With Impact Weight

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Drive in radial shaft seal with special tool 27 1 480

Fig 6: Driving Radial Shaft Seal With Special Tool (27 1 480)

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Reassemble the vehicle.

Check oil level.

Check transmission for leaks.