T16 restoration starts in earnest

[horsa]

You could open the lines at the exit side of the rear end's oil cooler and then rig something up to catch the fluid as is pumps out during a short test run. That would tell you if it is actually circulating via the pump or not. That would be fairly accessible. Other option would be the line outside where the oil is pumped back into the rear end. That would probably actually be better since it would confirm if the entire loop is clear and that the pump is moving fluid.