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Farmall & IHC Tractors Discussion Forum
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Farmall A Cooling System

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Ohio Mark

08-13-2006 19:57:56




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I understand that the A (and also B I assume) have no water pump but use what the owner's manual calls "thermal syphen" which means the water just circulates because of temperature difference through the engine and radiator to cool the engine. My problem is, I am not sure the water is circulating through the engine. The reason is that the lower hose where the water goes from the radiator to the engine is never very hot but only a little warm even after the engine has run for an hour or more. Meanwhile, the water at the top of the radiator is very hot (but not boiling). The engine runs well all during this time. (I know the radiator is clear because I flushed it a few times.) I'm not sure how to test whether or not the water is circulating through the engine without taking the radiator off. Two questions: First, does anyone with an A or B know if their lower radiator hose becomes hot after the engine is warmed up or does it just remain warm? (If everyone else's is just warm maybe the radiator really is cooling the water that much.) Second, is there any way to test the circulation without taking the radiator off? I thank you all for your help.

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Haas

08-14-2006 14:29:07




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 Re: Farmall A Cooling System in reply to Ohio Mark, 08-13-2006 19:57:56  
Old is correct!! Your system is working as it should. If the thermosyphon system is not working, you would be overheating and blowing steam in fairly short order. If the system is working correctly, you will really have to do some heavy work to get the lower hose to warm up much. At low load, it will stay cool all the time.



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old

08-13-2006 21:02:44




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 Re: Farmall A Cooling System in reply to Ohio Mark, 08-13-2006 19:57:56  
Guess what?? Your system is working just fine. Lower hose should be cool and upper hose should be hot. Thats how the system works. Hot goes up cool goes down so lower hose will be cool because its low and upper hose will be hot because its its up at the top.



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