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Farmalldan
12-17-2003 11:36:55
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Re: Thermosyphon and recored rad? in reply to SAm in NS, 12-17-2003 08:04:47
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Sam,
If your tractor overheats in service, it will blow steam from the overflow, etc. If this is a new experience for you, you will think it is on fire, but it isn't. If it happens, allow it to continue running at a fast idle with no load. Carefully remove the radiator cap. If you have a pressurized system, be VERY careful. When the pressure is removed, much of the water will flash to steam. It is sometimes better to cool down pressure systems by a water spray on the radiator or shutting the engine off to avoid the hazards of steam burns. For a non-pressure system, remove the cap and slowly add water until the radiator is at the proper level again. Add slowly so that cold water does not enter the block and crack it. The thermosyphon systems could have an optional temperature gauge which connected to the lower water inlet. Not the best place, but that was where it went. The gauge fit in a bracket that attached to the governor housing. Tractors with added water pumps should also have the upper water outlet replaced with the outlet for a thermostat. Operating without a thermostat does not allow proper warm-up and is very hard on engines. The thermostat outlet has a gauge connection in it, which is the preferred location. Pressurized cooling systems do not cool any better than non-pressure systems. They merely allow the water to reach a higher temperature without boiling. A water pump will work with pressure and nonpressure systems equally well. Before you condemn your new radiator and spend some more money, determine whether it will cool your tractor. If you can operate your tractor regularly without continuous loss of coolant, it is adequate. I would certainly think it would be ok in the winter. Remember that loose fan belts, retarded timing, and lean mixtures make engines run hotter.
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