Ok what you need to do is loosen the outer axle nut first.In order to do that you will need two wrenches.Pipe wrenches will work,If you don't want to scar and knick them up wrap some tape around the jaws of the wrenches.You need to put a pipe wrench on each nut and actuall tighten the inside when loosening the outside.You will be able to push down on one while pulling back on the other.Basically the same way when installing it back,just tighten the inside axle nut a tiny bit more,put the other axle nut on,and then tighten the two together.Axle nuts usually come off easy enough,getting them out of the carrier and bearings is another story.lol Hope this helps