I have a different tractor but I think they are basically the same to do. the seals cost me about30 dollars each a bit pricy but not bad overall.
I followed these directions from RickB here.
Support axle & remove wheel. Drain oil from hub housing. Support lower steering swivel or axle flange. Remove 4 bolts holding steering arm to swivel housing & leave the arm in place. Clean area of swivel seal. Remove support from axle flange & allow/persuade swivel housing & axle to drop off stationary upper half & dowel pin with steering arm. Allow 8" or so of clearance to allow vertical shaft to come down & out. Pull shaft out, pry out seal, clean bearing if needed. Reinstall bearing, install seal metal side up. Install shaft, reinstall lower swivel housing; I use a small floor jack to carefully seat the housing & new seal. Reinstall steering arm. Fill hub with 134D oil. Install wheel. Check oil in axle center section. Consider changing that oil and the oil in the opposite hub.
went well, and the idea of the floor jack to mate the hub to it worked great.I would add that after filling with oil, I let it set a few days and the brought the level up to where it should be.
hope it goes well. I unfortunately had a stud break off, and had to drill and tap it out. but that doesn't seem to be the norm.
oh, and mine never weeped they went right to leaking. first one sid, and then as if on schedule the other side went a week later.I limped through the winter, dreading doing it but found it to be easier than I had thought. so dont let it scare you.
good luck keep us informed...