27 21 020 Replacing Radial Shaft Seal For Output Flange (ATC 450)

27 21 020 Replacing radial shaft seal for output flange (ATC 450)

Special tools required:





Important!
After completing work, check transmission oil level and top up if necessary.
For this transfer box, use approved transmission oil only.





Necessary preliminary work:
^ Remove propeller shaft





Release circlip (1).





Release output flange with three-claw extractor tool.

Lever radial shaft seal out of housing with a suitable tool.

Important!
Do not damage housing.





Installation Note:
Replace O-ring in output flange.

Check that O-ring is in correct position.





Installation Note:
Coat sealing lips of new radial shaft seal with clean transmission oil.

Drive in radial shaft seal with special tool 27 1 440.





Installation Note:
- Push on output flange
- Press down output flange using 2 screwdrivers
- Shim
- Continue pressing output flange down until retaining groove is completely visible
- Fit circlip