Replacing Radial Shaft Seal For Front Axle Output (ATC 400/500 X-Drive)

27 21 030 Replacing radial shaft seal for front axle output (ATC 400/500 X-Drive)

Special tools required:
^ 23 0 490
^ 27 1 410
^ 27 1 420

Important! After completion of work, check transmission oil level.
Use only the approved gear oil in this transfer box.

Necessary preliminary tasks:
^ Remove reinforcement plate (E53 only).
^ Remove front propeller shaft.





Press out output flange (1) with a suitable tool (2) in direction of arrow.





Remove protective cap (1) with a screwdriver.
Drive a hole into radial shaft seal (2) using a center punch (1).
See illustration.

Important! Do not use a drill as drillings may result in transmission malfunction.





Note: Illustration shows E46 drive flange.





Screw in special tool 23 0 490.
Drive out radial shaft seal (1) with impact weight (2).

Note: Illustration shows E46 drive flange.





Drive in radial shaft seal with a suitable special tool.
Special tool for E53 271420
Special tool for E83 271410

Add final details to vehicle.
Check oil level.
Check transmission for leaks.