drain the diff. remove the bolts to the mount on the rear end cover. remove the cover. then jack the diff up as high as you can. there is a large snap ring on the inner joint. push the inner joint in to pull the clip. the portion in the axle flange is very short. push the outer joint inward, then pull that end out. a little wiggling and the inner end will come out. some of the old-timers used to swap axles side to side to prevent excessive wear on the inner joint's splines. never heard of the vibration problem, but that may be why. be careful when you rethread the mount bolts, the cover's aluminum and will strip in nothing flat a good sealer in a tube for the cover and that's it. good luck, chuck.