In Reply to: Re: Golden Jubillee hydrolic pump posted by Ultradog MN on July 30, 2020 at 21:00:15:
I deal with these pumps a lot and I have a very good handle on what the costs are. I didnt mention my gear pump conversions because I cant make them fast enough to keep up with demand. Customers are people with worn out vane AND piston pumps looking for an inexpensive and reliable alternative to rebuilding OEM pumps. Not just NAA but hundred, and thousand series tractor owners as well. At $575 the gear pump conversions are less than half the cost of a vane to piston pump conversion and at $375 cheaper and more reliable than rebuilding a worn piston pump. I have such a backlog of orders I can't keep up and for the time being I am turning people away.
I purchased the original Ford prints for the OEM piston pump components and I am currently working with a local CNC shop to get the replacements for the OEM wobble shafts manufactured in bulk to speed up the process. I already have a CNC source roughing the NCA 905C to SAE-AA pump adapter plates for me. The rest is off the shelf parts and and a little bit of final machining.
If you have old piston pumps to give away I'll take all you have. I take the nose casting and drive gear off them and throw the rest away. Buying those parts new adds $200 in core charges to the cost of a conversion.