Review on Efficient Axle Shaft Seal Installer for Ford 1998-2004 F-250/350/450/550 – OTC 6695 by Kyle Hoes

I can't imagine installing the axle seals on my 02 Super Duty without this tool. It seems expensive at first, but think about how much you paid for the original gaskets, and then consider the significant chance you could destroy one of these while trying to make your own tool from a combination of galvanized water pipes. It's easier now than when I bought it after seeing how great it works to get the job done. Once you know how hard you have to slam this tool to install the shaft seal, you'll smile from the bank for the time and effort you've saved by buying this thing. It is also used to fit the seal and shaft into the knuckle and prevent them from penetrating too far into the axle housing. It's very simple and just perfect. Buy it.