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Farmall & IHC Tractors Discussion Forum
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F-12 QUESTION

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STEWARTINPA

11-27-2007 02:20:14




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I JUST BOUGHT 2 F-12 I AM GOING TO MAKE ONE OUT OF THE TWO THE ONE HAS A CAST IRON THING ON THE HOOD ABOUT THE SIZE OF A POP CAN WITH A BRASS BOLT IN IT WHAT IS THIS FOR IT ISN'T HOOKED UP ANYWHERE THANKS STEWART




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Andy Motteberg

11-29-2007 12:41:06




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 Re: F-12 QUESTION in reply to STEWARTINPA, 11-27-2007 02:20:14  
That is the fuel line vent.



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Athol Carr

11-27-2007 12:02:29




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 Re: F-12 QUESTION in reply to STEWARTINPA, 11-27-2007 02:20:14  
This is the return chamber for dual fuel tractors, the straight gasoline tractors did not have them. The problem with the dual fuel tractors was that both the gasoline and the kerosene went through the fuel pump and only some of it went to the carburettor. The remainder went back to the fule line from the tanks to the pump. In the straight gasoline tractors there was a small T fitting just in front of the tank with an upstand just inside the tank to give about a half inch head on the line to the carburettor. In the duel fuel tractors the pump excess cannot go back to the tank as it would lead to fuel mixing. The W-12 etc and the later F-14 tractors fixed this by mounting the gasoline starting tank in the hood supplying fuel by gravity and the pump only dealt with the one fuel, kerosene or distallate and the problem of mixing was no longer there and so the little header tank disappeared.

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Nebraska Cowman

11-27-2007 04:48:55




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 Re: F-12 QUESTION in reply to STEWARTINPA, 11-27-2007 02:20:14  
It is part of the excess fuel return from the fuel pump.



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James Williams

11-27-2007 04:47:40




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 Re: F-12 QUESTION in reply to STEWARTINPA, 11-27-2007 02:20:14  
Its a presure releif valve,I also use mine for priming the carb.It works very well.This valve also keeps the flow of gas above the carb.so there no chance of running out on a steep hill.If you have a parts catalog from rise equ.it shows the plumbing lines

jimmy



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