I got my 2" er at harbor freight but have since then been using the hammer and chisel trick for sake of speed. Once you pack your breaings a dozen times you kinda get the feel for the right torque.
If you are just doing the locker, pull the kingpins and bearings but pay close attention to all those gaskets and crap...I always forget to put it back together right....
It is easier to change a busted birf or inner shaft without removing the bearings too. just pull the kingpins and the seal rings and you are in business.
get used to it....breakage will happen soon....my crystal pepsi says so in your fortune....ooooooo.....