Hello everyone * I recently bought a 1973 1816 that appeared to be decent when I got it but turned out it should really have a major go through before used. It seems to have great potential...but like I said, really needs a good go through! * I am new to machinery and learning about hydraulics. I was wondering if the drive motors and the "control box" and pumps (sorry if some wrong terms) are the types of thing that basically either work or do not work? In other words, does their performance have a slow decline and should I rebuild or replace them? * I plan to pretty much disassemble everything clean stuff in parts washer and replace all hoses, bearings, etc. As mentioned above, if I have all the pumps and motors out, I would rather do the right thing and replace/rebuild if those items have a slow performance decline. * I need to hand clean the grease, grime, and manure from the bottom. I gave up trying to pressure washer it out. * I am repowering with a small Kohler water-cooled diesel. I did all the measures and it looks like it will fit with not too much modification to the rear access door. * Thanks much (tried to make paragraphs but this squished it all together?)