Let's see.......
Pull six more bolts, slide the case back and lower it to my chest, rollover and set it on the ground, pick it up and set it on the bench.
Or....
Undo all the case bolts while laying on my back under the rig, and the bolts for the rear housing, and the front yoke bolt, and pry the case apart with oil dripping down, pull the case apart and both output shaft assemblies and sprokets and chain, inspect all the parts, mess with the front output seal, install the new parts and reseal the case and install all the bolts, seal and install the rear output housung, torque the front and rear output shaft bolts...........all while laying on my back under the rig.
Been there, done that......no thanks. My choice is to do it on the bench, which I've done many times.