how do i replace rear axle seal. Both rear seals are leaking.

Remove the axle bolts and pull the axle, remove the nut and the bearings, and pull the hub.

Also just to add, had one the other day that the customer was told the seal was leaking, turns out the axle flang gasket is what his problem was! I just used silicone and resealed it. Now this may not be your trouble but it was just a thought.