when you say right side if you mean the PS then it's not bad.
you need to unbolt the cv axle from it, 6 15mm bolts, then let that hang down, remove the plugins from it. remove the 2 bolts holding that side axle tube to the frame, I think they are 18 or 19mm, may need a wrench on top to hold that part if you remove the tube from the bracket. Then remove the 5 15mm bolts that connect the tube from the diff.
watch the parts, washers, a gear, fork, and spring. Once removed you can tap the end of the axle with a soft hammer or wrap it up and hit it. that will get it loose so you can pull it from the tube, pop the seal with a screwdriver or something, drive in the new one, slide the axle in, then reinstall the gear that you must drive down to lock it in. You need a big socket or something that will fit on the inner part of the gear, but around the stub. Drive it in then reinstall.
Good luck with it too, I bought a new seal for mine, right number and all, the seal fell out(old one) and the new one fell in, so mine still leaks.
