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Subject: Sherman power digger

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Rick Joseph    Posted 02-05-2022 at 08:22:02 [URL] [DELETE]        [Reply] [Email]  
  • Sherman power digger
  • I have a I believe a 50's model sherman backhoe that came with my 8n it isn't attached, and I know how it's mounted on the rear of the tractor, but looks like I need a gear pump? for the pro, and if so how do I size it?
    I only see (1) hydraulic hose that would distribute the fluid is this correct, or should there be (2) hoses for the pump? would anyone have a manual they would be willing to share?

    I would appreciate and advise
    Thanks Rick

    Bruce Dorsi    Posted 02-05-2022 at 10:38:18 [URL] [DELETE]        [Reply] [Email]  
  • Re: Sherman power digger
  • If you haven't seen it yet, there is an excellent library of info at this site.

    At the top of the home page there is a red bar. ...Click on the "Manuals" tab, and it will bring the N-Tractor world of info to you.

    Your PTO shaft will be 1-1/8" (original size) or 1-3/8" (replacement)diameter. ...You will need to find a pump to fit, or change the PTO shaft.

    The Sherman 'hoe had its own reservoir, so there will be 2 hoses going to the pump - an inlet hose (suction) & discharge (pressure) hose. ...The suction hose will be larger in diameter.

    The original pump on the Sherman was made by Hydreco. ....The tractor needed the Sherman auxiliary transmission (step-up or combo) to drive the PTO-mounted pump at a faster speed.

    I have never been able to find GPM specs for the original pump.

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