I need some advice on a hydraulic pump. I mentioned in my project thread about my tractor grapple build, that I was going to have to replace the worn-out pump in the auxilliary PTO-driven hydraulic power pack that I use to power the front-end loader and grapple on my old Ford tractor. The auxilliary power pack came with the tractor when I bought it and is worn out like the rest of the tractor was. I need to know what size pump would provide suitable flow to operate the loader and grapple at a suitable speed. The worn-out pump that is currently in the unit is- according to my measurements and an online calculator- approximately 19cc per rev. I don't know how that converts to LPM or GPH and I have no experience of what a suitable flow rate for the job would be, so would appreciate some guidance on this. Looks like it won't be cheap so I need to make it worthwhile!


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