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I have a 1968 John Deere 500. It has around 23 gpm flow from the hydraulic pump. The tractor has a 13ft backhoe and is 80 hp. I need to replace the 6 spool backhoe control valve because it can't be repaired correctly. The only good quality aftermarket part that I can find only has 12 gpm. It's a...

EDITED TO TRY TO CLARIFY BETTER: What i'm trying to accomplish is to run 2 variable speed piston pumps off of the Flywheel of a 35hp Briggs Vanguard to power 2, or possibly 4 hydraulic wheel motors. I am trying to understand whether putting the second pump in Tandem on the Flywheel shaft will...

I'm wondering if, or how it's possible to limit or control the hydraulic flow of a gear pump running an FEL or Backhoe so that there's not excessive GPM of hydraulic oil flowing constantly creating unnecessary heat when the FEL isn't being used. I'm going to be running 2 variable piston pumps...

Hi. I've read many knowledgeable users on this forum state calculations for HP requirements to drive Hydraulic Pumps, yet to my inexperienced mind they seem to contradict the calculations from most websites, Surplus Center being one example. Surplus Center Calculator states that Gas Engines...