I started out spraying Free All and PB Blaster anywhere around the pin. Do this especially where the pins go through the shoes. Then I used my good, 10inch Vice Grips, clamped the bejabbers out of the pinhead and kept
nudging the pin back and forth until I could rotate the pin. Then I used screwdrivers,chisles and adjectives. this got the first one out. The second one told me to take a hike. I got the smallest bearing splitter that W.W.Grainger sells and clamped in the groove of the pin after I got it to start rotating. I would screw the forcing bolts against the casting until it wouldn't move anymore, then drive in the chisles, between the splitter and the casting . squirt in the penetant, diassemble the splitter, drive the pin back in,and do it all over again. This was on my 1956 W.D.45. One of my buddies with 40's W.D. had his come apart with no problem. If you cut the pin off inside the casting,you will have split the axle housing from the differential, I,m sure. It takes patience and a lot longer to do than it took to tell you this!My 12th grade english teacher would have fainted if I had ever turned something this long. I just remembered, it also helps to pry up inside the hole at the bottom of the casting to shove the brake shoes on the pins. One A.C. guy told me that if mice made a nest in there, and you get it apart without torching and a teardown, you have been favoured by powers that be.