At Mopar dealer we used to use the case spreader and do bearings and gear replacements/service while the differential was still in the vehicle. Not just for the dana 60, several diffs it was required (per manual) for ring and bearing service. I never did one on the bench with the diff removed.
Copper

Common sense, the least common of all the senses.
Mom.

For fear of ridicule, society stifles creativity.
Ricky Valdes