Farmall 300 LP Refuel Question

old school · Jun 22, 2009

I'm looking at buying this tractor with LP and don't have a clue about how to fill it with propane. Can you guys offer some advise? I called the propane place and they want me to drag the tractor down there....

Brownie 450 · Jun 22, 2009

Don't know about the 300, but we used a 560 LP as a loaner. Had to hook up the liquid hose, open the valves, & then open the vapor valve to relieve pressure in the tractor tank. Wasted a lot of propane just fueling the thing. You need a pump arrangement to save propane.

colekicker · Jun 23, 2009

The whole LP thing seems like they don't want to sell it. When I went to a local propane company they wanted me to set it up like Brownie 450 was saying.
From the research I have done this is how it is "supposed" to work. You should have a wet leg in the filling tank. The liquid line should attach to the tractor from this wet leg. There should also be a vapor line running from the tractor to the tank to recapture the vapor. (Brownie 450's losing a lot note) You should also have another connection on the tractor tank that you unscrew to see where the liquid level is on the tractor. This should be your 80% fill and where you need to stop for safety.
Anybody can correct me if I am wrong. I need all the help I can get. I have a 350LP and 450LP. It is really tough to get any info.

I wish YTMAG could get a seperate forum for LP so we could have something to talk about tractor regulators, hosing, tank cleaning and such.

NDS · Jun 23, 2009

The reason for venting large amount of vapor is to lower temperature in tractor tank thus lowering pressue so supply tank will have more peessure, this makes it impossible for vapor to go back into supply tank. A pump is only GOOD way to fuel tractor and this gets expensive. Have fueled LP tractors hundreds of times and this is what we were always told bu LP distribitors.

CoopertownBob · Jun 23, 2009

Just added a hose/regulator/preventer to my backyard tank and fuel from it. Cost a bit to set up, but in the long run, is the least expensive way around here. I use a vacuum pump to purge the tank on the tractor first. I just pump it down like you would an A/C system then fill her up. Fills just fine, with little loss. I came up with this idea AFTER I lost nearly as much LPG as went into the tractor the first time I filled it this way.

You might try something similar using a portable 40 lbs bottle like forklifts use. That way, you can transport fuel back and forth, without having to haul the tractor to the filling station first. A better way, however, would be to call a local propane dealer who specializes in home delivery and see if he can fill you up on his way to another customer near you. If you wind up using enough, he might make special trips just for you. I've had the best luck using out of county dealers this way. They are always looking to make inroads into other dealer's territories.

NDS · Jun 23, 2009

Pulling vacuum on tank sounds like a good idea if you can do it in a way that is not an explosion hazard. When I was running pickups on propane I figured I lost about 10% when venting tank. I figured loss by comparing mileage I got out of 400 gallon tanks compared to mileage when fueling at propane dealers.

old school · Jul 2, 2009

I bought the tractor and it has two valves, one large threaded fitting (like you attach a gas grill to a propane tank) and a smaller threaded fitting above that. I"m guessing the larger one is where I would hook a line to fill it. What"s the smaller one for?

Farmall 300 LP Refuel Question

old school

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Brownie 450

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colekicker

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NDS

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CoopertownBob

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NDS

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old school

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