It turned out that I needed to re-core the tractor radiator. I broke the solder on the fittings while I was changing the hoses. I took the radiator into the shop and he said that the whole thing needed replacing or fixing. After all it is a 50 year old radiator. While I have the tractor apart, I decided to clean, sand and paint as much of it as I could. It is starting to look really good. I also changed the engine oil, replaced the hydraulic fluid and tightened some bolts and stopped some fluid leaks. I need some fittings replaced on the hyrdaulic pump before I can thoroughly test its power. I am thinking that it will likely need to be rebuilt, but have my fingers crossed. Tonight, I can pick up the new radiator and start putting the tractor back together. Over the winter, I will continue to fix the tractor up in my spare time. By spring, I will have a fully functioning WD45 for all my farm work.