Simervillefarm
New User
I recently bought a new to me Fordson Super Major (Ford 5000 Diesel) because I couldn't passup the price for a running tractor with brand new tires on the rear. However the hydraulics were not working when I bought it. After diagnosis I found that the PTO clutch plate had come apart so the hydraulic pump wouldn't run. I split the tractor and installed a new drive clutch as well as the PTO clutch and those are now working great! However I could not generate more than about 300PSI and as such the tractor won't even lift the bushhog that I bought it to run. I have had the top plate off and everything SEEMS to be in working order but I did notice that the unloading valve only had the remains of it's o-ring. So thinking that was the problem I tracked down the correct part number for the correct o-ring for the unloading valve and reassembled. Now I can generate 500PSI but that is still a far cry form the 2500-2700PSI that is specified in the manuals. I have ordered all new o-rings and a new service control plate gasket as well as a new top cover gasket and valve cover gasket so I will be pulling the top plate yet again :-( in the next two or three weeks. Does anyone have any suggestions on what I should be looking for? Just about the only things I have not looked at directly yet is the pump itself (because it does pump so I don't think it is split), the filter cartridge and the backpressure valve.