I have never used a case spreader on a Dana 60! I always put an offset box end wrench on one of the ring gear bolts after removing the carrier bearing caps and the axles, then I turn the pinion nut with a 1 5/16 socket on a breaker bar. The box end wrench contacts the housing as the ring gear is turned and it just jacks the carrier out of the case nice as you please. When the carrier is out far enough to get a screwdriver into the carrier bearings, a few gentle prys and it's out!