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Minneapolis Moline Tractors Discussion Forum
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one other dumb question

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m14dan

09-17-2004 06:31:02




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I'm new to propane power and don't know that I like it but here's the problem. When I'm refilling the new 4 star mm I crack open the little vent that you fill till liquid comes out. Then I open the big vent that you are sopposed to let the vapor out of, then I hook up the hose to the tractor and then to the tank. When I hook to the tank I just get part way down on the nut tightening it and gas starts going everywhere!!! It has the little trip lever on the side of the valve to open and close it and it seems like it doesn't retract far enough into the valve body to prevent gas flow at all. Is there sopposed to be a seal or gasket in there between my hose fitting and tank fitting or something??? The man that used t live here said no. This can't be right though. That is scarey with so much gas escaping. Also when I am filling it do I just let the big vent on the tractor tank rip like he said?? He told me to leave it open till all vapor is done escaping. It won't do that till all the fuel is gone correct???

Lastly, When I disconnect the fill hose I close the valves and start unscrewing the valve from the big tank and liquid sprays all overtill it's almost completely disconnected! I tried draining the hose down into the tank but it seemed like it would never stop. I tried disconnecting from the tractor first and that seemed like it would never stop too.

Someone please help and tell me how to do this right so I don't blow myself up!

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Gerb

09-12-2005 17:53:22




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 Re: one other dumb question in reply to m14dan, 09-17-2004 06:31:02  
I have grown up with propane tractors and I some experience with this. You may have found out the problem, but I will tell you that there may be a check valve on the tank that, while you are connecting the fill line, the tank will let out some liquid as you are tightening the hose. Once the hose is seated, then the leaking should stop. Be careful....WEAR GOOD GLOVES. LP is mighty cold.



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Allyn

09-17-2004 21:33:21




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 Re: one other dumb question in reply to m14dan, 09-17-2004 06:31:02  
Yes there should be a rubber gasket in the tank fitting that the hose screws to. I don't think you could tighten the nut enough to stop it from leaking if the gasket was completely gone. The open/close lever works a pushrod that opens the poppet tank valve. This pushrod should be adjustable. Turn it to the right and it should screw in enough to allow connecting to the tank without opening the tank valve. I leave the hose connected to the tank and just close the big tank valve with the lever and a shutoff valve on the tractor tank end of the hose. If gas pressure builds up in the hose it will force the tank valve open and equalize with tank pressure. Don't bleed any vapor from the tractor tank until the liquid hose is connected and the valves are open. The small bleeder should be enough to fill the tank unless you are in a big hurry. You are just wasting fuel and cooling the tractor tank by letting the big vent "rip". I agree that you should call the propane dealer so he can inspect your equipment and advise you on safely filling the tank. LP gas is safer than gasoline if there are no leaks and common sense is used when handling it.

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m14dan

09-18-2004 05:36:49




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 Re: one other dumb question in reply to Allyn, 09-17-2004 21:33:21  
You just described exactly the setup I have. Better than I did too. Thanks.

The gas man is scheduled to come out next week again to fill up the tank and put a gas tank out there too for my farmall and I will ask him for the gaskets. I probably will leave the tank hose on durring times of use and leave the valve on the end of the hose shut like you say. I only had to fill up 3 times durring the planting of my field and I use my farmall super c mostly anyway for mowing, cultivating and all that stuff. The minnie has its place but I definitly won't be using it as much as the farmall.

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STEVETHEGBMAN

09-17-2004 17:12:30




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 Re: one other dumb question in reply to m14dan, 09-17-2004 06:31:02  
THE TRIP LEVER YOU ARE DESCRIBING SOUNDS LIKE THE OLD GAS GUAGE ASSY THAT HAS A HOLLOW ROD THAT WHEN TURNED DIPS INTO THE LIQUID TO TELL YOU HOW MUCH FUEL YOU HAVE.

I WOULD HIGHLY SUGGEST THAT YOU CALL THE PROPANE MAN AND LET HIM COME BY AND WALK YOU THROUGH IT ONCE.



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Bob K

09-17-2004 09:59:51




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 Re: one other dumb question in reply to m14dan, 09-17-2004 06:31:02  
Do you have a valve at the top of your tank and a hose permanently connected to that valve with another valve at the end of the hose where it connects to the tractor? Is the supply tank set up so it feeds liquid propane into the hose or just vapor off the top of the supply tank like a gas BBQ grill? I'm not familiar with the trip lever you mentioned.

IF I have to vent during filling, I only ever use the small bleeder to vent the vapor from the tractor tank while filling liquid. It takes longer, but there is less propane spewing into the atmosphere. One better than that is to hook up the tank to the tractor in the evening and let it sit overnight so the thermal expansion in the two tanks with actually fill the tractor without bleeding ANY gas into the atmosphere. Safer too.

There will always be some fuel that escapes when removing the (pressurized) hose from either the tractor or the tank. If you can't isolate both ends of your hose with valves, a lot of fuel will have to bleed away into the air before the hose is empty.

Wish I could see a picture of your setup to help you safely fuel the 4-Star. Hopefully others can help with info too.

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