LP Tank Question

rocky acre farms · Nov 1, 2016

I think the pointer on this LP tank is the fuel gauge but what I really have no idea how does it work...I can turn it by hand not sure if I am supposed to be able to or if it doesn't work...Any help is much appreciated.

shaun wallace · Nov 1, 2016

It supposed to work this way loosen knob on end then rotate lever till liquid comes out. This tells how much liquid is in tank.

rocky acre farms · Nov 1, 2016

Ok thanks...now where will it come out at ? In the first pic what is the purpose of the fixture with the hole above it?

Ronnie Budd · Nov 1, 2016

That thing with the pointer is a Rotogauge. It has a percentage scale on it that somebody painted over. You need to un-paint that. To read the gauge, start with the pointer up and turn the little knob counterclockwise. Vapor will come out of a pinhole in the side of it. Then rotate the pointer (slowly) until liquid starts coming out of the pinhole. Read the gauge where the pointer is pointing. That is the level of the liquid in the tank.

The purpose of the thing with the hole above it is the overpressure popoff valve. It is a safety device to keep the pressure in the tank from becoming excessive. Unless you overfill the tank substantially, you'll likely never see it go off.

The small valve at the top in the first picture is your stop-fill valve. You open it before you start filling the tank (vapor will come out) and leave it open until you see liquid start coming out. Stop filling the tank and close all the valves. Most of these are set a 75%. Some are at 80% if the tank is rated for higher pressure. Never fill over the stop-fill level--------unless you want to see the overpressure popoff valve do its thing.

rocky acre farms · Nov 1, 2016

Thanks for the help.

504 · Nov 1, 2016

At the least were a pair of leather gloves,rubber are better,liquid propane will freeze skin fast. Be safe.

shinnery · Nov 2, 2016

One other thing you need to know, the two valves with lines hooked to them, one says vapor and the other liquid. You should only open the one that says vapor until the tractor is warmed up. When working the tractor hard be sure the liquid valve is open. Normally when the liquid valve is open I close the vapor valve. When you run out of liquid you may have enough vapor left to get you home from the field.
Bryce

MMDEL · Nov 4, 2016

Shinnery: Stop and think, there are not two compartments in the tank. If you run completely dead out of fuel with the liquid valve. There won't be any vapor coming out the vapor valve. After you warm up and turn the liquid valve you need to turn the vapor valve off so you get full flow out the liquid line.
MMDEL

shinnery · Nov 5, 2016

I must have imagined I drove that UB across the field.

Howard H. · Nov 5, 2016

I know exactly what you mean, Bryce. Our
old 4020s would do the same thing. I think
the liquid gets pulled down to the end of
the intake pipe in the tank, but there is
still enough rolling around in the bottom
below the line to boil off vapor - sometimes
for quite a while.

Depending on the temperature, and one 4020
had a tall tank and one had a short tank so
different tanks are different, and it might
not have much power or full revs, but you
could sure get quite a ways on vapor only
and save yourself some walking...

Howard

MMDEL · Nov 5, 2016

I understand what you guys are talking about. And I have done the same thing.When I loose power, raise the implement throttle down and head for the house. But you don't usually have to open the vapor valve the vapor will flow out the liquid valve. Didn't mean to be smart about it. Just didn't want rocky acre to think there was a secret compartment in there with some spare fuel.
MMDEL

X-Y switch · Nov 5, 2016

Ran the old GB dry a few times but like you said it would still run, way down on power but would "cripple" back to the tank. Never made me walk. Harry

LP Tank Question

rocky acre farms

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shaun wallace

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rocky acre farms

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Ronnie Budd

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rocky acre farms

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504

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shinnery

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MMDEL

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shinnery

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Howard H.

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MMDEL

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X-Y switch

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