I have the paper 610 operation and test technical manual, TM1446, the hydraulic pump is the same pump without the charge pump.
You can hook up to the main pump or the backhoe valve, oil at 104 degrees F plus or minus 7, 2000 RPM plus or minus 25, 2,750 PSI plus or minus 54.
The system relief valve is in the priority valve, and is removed for testing, and replaced if not correct.
I could send you a copy of the two pages, but there's really not much more explanation.
The circuit reliefs are tested with a pressure multiplier. Those pressures and the cycle times are different between the machines though.