Nissan_MasterTech, thank you for taking the time to reply.

I checked under the truck and saw a small stain. It is now dark and I can't see well, and I currently can't put it in the garage. I will have to deal with this tomorrow.

When you say "suction side", do you mean the line that goes from the reservoir to the pump? Or do you mean the side that goes from the pump to the gearbox? Assume you mean the latter. Those are the only two places where I disconnected any lines, was the two connections to the pump.

I did get out the 15/16ths socket and tightened down the fitting to the pump more, and then ran it for about 10 minutes. Didn't seem to help. Perhaps I'm still getting aeration...

I can tell you that when the wheels are down, I hear pump squeal when I turn the steering wheel to the left, and I don't get noise but I get a LOT of resistence when I turn the wheel back to the right. With the wheels up, the pump is quiet and both directions are easy.