Removing the seal
Tie the drive shaft to the spring strut. Use a tie strap
Protect the axle end from contaminants. Use a plastic bag.
Temporarily secure the stub axle to the spring strut with either a strong tie strap or with one of the screws for the spring strut.
Remove the seal. Use a jimmy bar. Do not damage any surfaces.
Check that no residue from the old seal is left in the transmission.