I have since found and replaced my pressure relief valve as well as flow divider valve.  I have 1850 psi showing on a pressure gauge hooked into the hydraulic outlet on the rear of the tractor.

The issue I was originally having is a squeal in the hydraulic system and high temperature of the fluid.  I thought the issue may have been the pump as it was weak, so replaced it and still had the issue.  Then replaced both of the above. (tractor is a work in progress....)

I am wondering if it could be the hydraulic control valve in the steering system could be an issue.  I seem to have very weak flow to the oil cooler at the front of the tractor (Can cover end of line with my thumb and stop the flow).  Is the flow of oil from the steering control valve then supposed to flow through the cooler?

Does anyone have a hydraulic schematic they could email me?