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 23 0 490 Extractor
- 27 1 410 27 1 410 Drift
- 27 1 420





Important!
After completion of work, check transmission oil level Changing Oil In Transfer Box (ATC 400/500).

Use only the approved gear oil in this transfer box.





Necessary preliminary tasks:
- Remove reinforcement plate Service and Repair (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 23 0 490 Extractor.

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.









Add final details to vehicle.

Check oil level.

Check transmission for leaks.