Very easy. There is a tool for it. You have to put it up in the air, easiest way is a floor jack under the rearend, DO ONE AT A TIME, take off the axel shaft at the tire, then remove the cotter key, then remove the nut, slide off the spindel yoke, replace with the tool and nut, grease then reassemble. I recommend a good grease like Royal Purple. Give it about 6 shot's with a hand greaser. Tape around the U-Jounts to keep the bearing cap from falling and loosing the needel bearings, also a good time to look at the needel bearings for ware and on the U-joint. It would be easier to replace them since you have 1/2 taken off.