Farmall H Fuel LIne

Picklesmith · Mar 21, 2021

Requesting information about the best way to install a gasoline fuel line on a 1948 Farmall H. The fuel strainer at the tank has what looks line a 5/16 female fitting as does the carburetor (with the brass filter in place). I am using a stainless steel line purchased from Brand X that came with two 5/16 compression(?)style brass fittings. Cannot seem to get the fittings to seat correctly. Hence, the fuel line leaks as both ends. Is there a better way of installing the line using flare nuts or some other method? I am not looking for a show tractor, just a functional one. Thanks.

old · Mar 21, 2021

On many of my tractors I use premade brake lines with the correct size fitting on each end

used red MN · Mar 21, 2021

You should have bought one of these, see link. Beware the line shown is for a gasoline models. They have others as well..kerosene,distillate. IH used special nuts with compression ferrules that were attached to the line nut but broke loose when they set one the line. Otherwise here may be a work around. Get a 5/16 compression fitting, a coupler. Slide a male nut on the line that would normally thread on to tighten to seal to line. Then install the compression fitting as normal tighten it and set the brass ferrule on the line. Loosen the compression fitting and with a hacksaw split the female nut. Do the same procedure with the other end. If you line is NOT configured with the stock coil loop you can do this with only sawing the nut off one end. No guarantees, should have bought a stock style replacement line.
YT H fuel line

wore out · Mar 21, 2021

IH used a rather unique combination nut and ferrule on those fuel lines. It's the only thing that will fit up correctly to the original sediment bowl and carburetor elbow. When it is tightened the first time the ferrule breaks loose form the nut and gets compressed around the line, creating a tight seal.

Just get the right part and all will be well, the inverted flare fittings you have tried are not correct.

<img src = https://i.imgur.com/HXN878m.jpg>

Current part number at the CIH dealer is 222-503.

You can get it through your favorite FIAT dealer, or GOOGLE the number for many on-line sources.

Steve@Advance · Mar 21, 2021

It probably has 5/16 flare fittings, the same as standard steel premade brake lines. They can be bought at any auto supply.

Just measure the length you need, but the closest length without going too short.

The line is soft and bends easily without a bender. Don't cut it, just form it to fit away from the manifold heat and anything that can vibrate against it.

Hopefully the fittings were not damaged if the wrong thread was used.

super99 · Mar 22, 2021

Just curious, why did IH put the loop in the line? You don't see that on other brands.

BarnyardEngineering · Mar 22, 2021

The loop acts as a "spring" to dampen vibration and keep the line from work hardening and cracking if it were simply connected directly.

Farmall H Fuel LIne

Picklesmith

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old

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used red MN

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wore out

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Steve@Advance

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super99

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BarnyardEngineering

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