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Overheating Cub Tractor / Cub Expert Needed

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Tony Jacobs

07-13-2003 08:55:23




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I have a 1956 Cub that has an Overheating problem that I have not been able to figure out. After the first hour of mowing it needs about a half gallon of water which is probably about normal for a thermo-syphon system but after that it uses more water faster until you can feel it losing power even though it has water in it. Tha radiator has been Rodded out and the lower tank cleaned out, the Head has been pressure checked and flow tested with no blockage, the block has been cleaned and flushed, and it has no aftermarket thermostat in the radiator hose. Normal water pressure from a garden hose flows through the systen in both directions freely. Compression is good on all cylinders and oil preesure is good also. I am an equipment mechanic by trade and grew up on my Uncle's Farm running IH Equipment including 3 Cubs up there and never had this type of problem, that's what has got my goat on this tractor. Thanks Tony Jacobs 1-413-267-5087 call if you would like and I can call you back.

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Randy in NE

07-14-2003 04:56:11




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 Re: Overheating Cub Tractor / Cub Expert Needed in reply to Tony Jacobs , 07-13-2003 08:55:23  
I have never run a cub. I have a couple of C's with thermo-siphon systems. Neither one of them uses a drop of water. One of mine slowly lost water but once I replaced the radiator cap the water level stays right where it is supposed to. I would be concerned with where your water is going. Are you boiling the water off and losing it through the radiator cap?



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Tony Jacobs

07-14-2003 19:38:28




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 Re: Re: Overheating Cub Tractor / Cub Expert Neede in reply to Randy in NE, 07-14-2003 04:56:11  
Hi Randy, Yes it is boiling off the water and it is coming out of the overflow tube and the radiator cap has been changed even twice with the correct one. The timing is correct and it does have a shroud also, two questions that were asked before. Thanks Tony Jacobs



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Chris B.

07-13-2003 16:47:42




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 Re: Overheating Cub Tractor / Cub Expert Needed in reply to Tony Jacobs , 07-13-2003 08:55:23  
Since it sounds as if you covered every problem that could be attributed to the cooling system, have you checked the timing? Too far one direction will cause overheating, or so I've heard.

Chris B.



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Bigdog

07-13-2003 09:34:05




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 Re: Overheating Cub Tractor / Cub Expert Needed in reply to Tony Jacobs , 07-13-2003 08:55:23  
Is the radiator shroud still in place?



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