MM UTS Over -heating

It doesn't leak water into the crank or burn it out the exhaust, but it runs very hot. I have had the radiator off 5 times and flushed out. I have 35 pounds per square inch of flow in the radiator. I have checked the water pump and it seems to be fine. I have checked the exhast manifold to ensure it is in the "cold" position and it is. I think that the temp gage is off, but even so, when you shut the tractor off it steams out the cap which means it is close to the boiling point.

Any suggestions?

Brian

Now for my two cents; do you have a thermostat in the tractor? If you do, I suggest you change it. Every auto parts store I have seen sells the wrong thermostat. Make sure the thermostat has a bypass hole with the little wiggler in the hole. I make my own thermostats, starting with a Stant stainless unit and a little modifying. Look in the radiator and visually make sure the water is flowing. with no thermostat, the top of the radiator should look like the Colorado river in the spring. As for the manifold setting; that is simply a heat exchanger setting for the intake air. Unless you are operating with low grade fuels, or it is ten below zero, let it set on cool. The only time I ever saw one set to medium was when I was a little pup and my family was grinding feed with our FTA. The 403 engine was operating outside at full throttle when it was about fifteen below zero. The exhaust manifold was red around the exhaust ports but the intake began to freeze and the tractor was losing power. My grandfather quickly pulled the clutch, put the manifold to medium, and after a few minutes we where back to work. That is the only time I ever saw that feature used. I keep all of mine free and ready...just in case. Finally check the fan and fanbelt. Is it pulling air and sounding like a turbine?

Brian

Thank you for your responses. I feel that your thoughts are probably correct and I will have to flush the block. I may disaassemble the head and the block completely, but I all so thought that I could take a long piece of radiator hose and bypass the radiator and use an acid flush in the block only so that I don't cause any leaks in the radiator. I would connect the hose on both ends and fill the system through the temp sensor hole with water and acid. I would then run the tractor for a minute to circulate the acid. I would let it sit for short time and flush it with water. What are your thoughts on this idea. I am only bringing it up because I don't think that just running water through it will remove the clog since I have been running it hot and under preasure for several hours now.

Brian

ryan