27 21 020 Replacing Radial Shaft Seal For Output Flange (ATC 350)

27 21 020 Replacing Radial Shaft Seal For Output Flange (ATC 350)

Special tools required:







IMPORTANT:
After completing work, check transmission oil level and top up if necessary.
Use only the approved transmission oil.







Necessary preliminary work:
- Disconnect propeller shaft at gearbox, release centre mount
- Tie back propeller shaft to underbody

- IMPORTANT:
- An excessive deflection angle of the propeller shaft may damage the joint/propeller shaft.
- Support gearbox with jack when removing the transfer box.







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