what Minisimp does is leave the wheels on, this is how i do it so you raise the truck enough to just barley clear the tires, remove the brakelines and nuts and lift the tire a little and pull it out, this adds some safety to removing the third member
the tire should keep the axle off the seal, but if your replacing it, just leave the axles in till you get the 3rd out then pull the axles and replace the seal