Thank you Ed these units rip the splines off the pump.Customer said it was rusty on the splines

you are far more likely to have a clogged up relief valve in the main hydraulic control valve or motor turning too slow than a pump problem but there have been some. (not many) be sure you have an A/C clamp on amp gage when you go to check it out, to insure the amps are good, as well as the pressure.
As I remember it, with the laptop (or the D-R-S switch), you can either set all the setups for a slower speed, or you can set the unit up as an EE unit and that will prevent higher speed, and higher amps on a ramp, and prevent the changing of the speed with the dash