There is easy, ridiculously easy, and so easy it requires no classification, this drops into the latter category.
Remove the four propshaft bolts at the axle end, suspend the propshaft out of the way, inside the input flange is a 30mm nut, using a socket, undo and remove, tap the input flange forwards, until it is out.
Remove the old seal and replace, lubricate the input flange with oil spilt from the axle, and reinsert, locate this on its splines, and refit the nut; refit the prop shaft and tighten. Level the vehicle and fill the axle with oil.
Sealed
There is easy, ridiculously easy, and so easy it requires no classification, this drops into the latter category.
Remove the four propshaft bolts at the axle end, suspend the propshaft out of the way, inside the input flange is a 30mm nut, using a socket, undo and remove, tap the input flange forwards, until it is out.
Remove the old seal and replace, lubricate the input flange with oil spilt from the axle, and reinsert, locate this on its splines, and refit the nut; refit the prop shaft and tighten. Level the vehicle and fill the axle with oil.
Should take 10-15 minutes to do.
Rear axle Oil seal
Thanks for the info, forgot to say it was on a sportrax but suppose they are all same.