[sawdustdad]

Originally Posted by Ambush

The pump would by pass from pressure side to "suction" side and overheat. Plus noise and very poor performance. The notches are there for pressure relief at the end of each piston's pressure cycle. If it were possible to have pump plates notched on both sides, manufacturers would do it to save inventory costs. It may exist, but I don't recall ever seeing any.

Left hand plates should be available, but to find a dealer that would bother to find one is the problem. This same pump size and series is used in Sundstrand pumps for many close loop systems, not just hydro's. If I had one in pieces, I could likely get it matched to a series. Might find that info on Google to. I'll search around a bit tomorrow.

If you google Sundstrand 15 series, you'll see examples of the the hydro units and closed loop but separate pump/motors transmissions. Same parts in a different package. These hydro's were used in a lot of smaller equipment like sweepers, airport equipment, swathers and the like.

Thank you, that is interesting and helpful. Might be easier to just swap the ring gear in the rear end.