Just got it. I have take in some test. It the implement pump. 1,000psi @ 1,800 rpm not good .Should be 2200 psi@ 1800rpm. Looking at 6.8 GPM @ 1800 RPM. The pump is not even going over the relief. I've done some research and found some book. . The pump that's in it is (Rexroth pump S15S-9-D-H-1-2-R), (Borg Warner 515 S-9-D-H-1-2-R). I found a match ; Prince SP20 So I'm good. Like you said Old Machinist . All the parts are on self. The engine Isuzu Diesel 3AB1 runs very good. From all the manuals and parts book I have. Part are available. Thank again, Tom