Replacing Radial Shaft Seal For Output Front Axle

27 21 030 Replacing radial shaft seal for output front axle

Special tools required:
^ 23 0 490
^ 27 1 341
^ 27 1 342

Important! After completion of work, check transmission oil level.
Use only the approved gear oil in this transfer case.
E46
E53

Necessary preliminary tasks:
^ Remove rear underbody protection from assemblies.
^ Remove front propeller shaft (E53).
^ Detach propeller shaft at transfer case (E46).





Press out drive flange (1) with a suitable tool (2) in direction of arrow.
Illustration shows E46.





Remove protective cap (1) in direction of arrow.
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 output flange.





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

Note: Illustration shows E53 drive flange.





Attach special tool 27 1 342 to output shaft.
Push radial shaft seal (1) onto housing.





Drive in radial shaft seal with special tool 271 341.

Installation:
Radial shaft seal must rest flush on housing.

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