Someone familiar with tractor 3 point "in general?"

It came with a PTO pump, and what little I've moved the hydraulics, seems to be OK. The downside is that the coupler is rusted to the pump and "something" makes the pump wobble. I've examined the PTO shaft, and it seems OK. Later on I'll pull it apart and inspect closer. The tractor has an "in /out" lever for the PTO so it doesn't need to run all the time.

This came with the factory hydraulics unit which moves, but it is all "dedicated." I"ve not tried to evaluate it. The loader has a live pump driven off the front of the crank---aftermarket.