I used a 1" dia steel bar and knocked the old seal out,from the out side of the axle,,,made up a special seal puller with a 5/8 " hole in the center of it,and put a pc of 5/8" allthread in it a strap across the end of the axle,2 ea 5/8 -11 nc nuts,and pulled it in ..... very easy to do but,it does pull in very hard.....