I've seen a bunch of threads all stating how difficult replacing axles seals is on a Dana 30, but I popped mine in and out in less than 15 minutes. All I used was a 4' piece of 3/4" pipe (it fits cleanly through your new seals), a 33mm socket, and a 3lb hammer. Once the shafts have been removed and the carrier pulled, the tough stuff is done. Simply slide the pipe into the housing and punch both seals out, one from each side. Once the old seals are out, make sure the recesses for the seals are clean and start each of the seals into place by placing the 33mm socket over the center of the seal and tapping the seals into the recess. The 33mm socket fits over the center of the seal and into the recess without actually interfering with the sealing flange (it was only pure luck that I had this socket in my box). Once both seals are started, slide the pipe through from the outside and carefully guide it through the outside seal so it extends through the pumpkin to the opposite side seal. I got my son to hold the socket on the seal while I drove it into place with the pipe, it only takes a couple whacks to set it. Then, simply reverse and do the other side. By placing both seals at the beginning, it helps to guide the pipe for seal driving. Hope this makes things easier for anyone that needs to do it.