My S219P has a PTO driven generator it works great. I run my Chain Saw and also a Pole Saw off it. I found an adjustable screw device under the dash that pulls down with a point on it that sets on the foot feed which allows me to set the RPMS to 60 cycle. I saw this thing early on and couldn't figure what it was at first. Funny thing I wonder what else my truck has that I haven't found yet.
When I got my truck I didn't know the generator was there, found it when I changed the Tran oil. Before that I'd load a generator in the bed. Now I can trim brush and haul it off in the bed. I run it in Fifth gear so the engine RPMS don't have be so high. They must be rare because I don't see a lot of post about one. Not knowing to much about these trucks yet I don't know if all transfer cases have to ability of a PTO.