I double checked but it looks like the backhoe might use 3/8" hose for inputs and outputs. I did some checking around and that appears to be good for up to about 6GPM max. I dont think this will be a problem though because my tractors PTO only turns 540 right around 3000 RPM so I should be able to run it at a slow speed something like 1500 and should be right around or under 6GPM.
