27 21 020 Replacing Radial Shaft Seal for Output Flange, Automatic (ATC 300)

27 21 020 Replacing Radial Shaft Seal For Output Flange, Automatic (ATC 300)

Special tools required:







IMPORTANT:
After completing work, check gear oil level and top up if necessary.
Use only approved transmission oil for this transfer box.







Necessary preliminary tasks
- Remove transfer box







Release retaining ring (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:
Replace O-ring in output flange.
Check that O-ring is in correct position.







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

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







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