Need help calibrating fuel sending unit for MEP-004

[tcruwithme]

The fuel gauge in my MEP-004 reads about 1/3 of a tank when I have 10 gallons of fuel in it. Since it's a 15 gallon tank, it should read 2/3 full. I replaced the fuel sending unit in the main fuel tank, part 72-2271 called the "fuel level switch" in the TMs, and that did not fix the problem. All of the wires are in good shape as are the connectors. I swapped out the gauge for a new one, and that did not fix the problem. I even swapped out the fuel float switch in the day tank, and that did not fix the problem (of course, it shouldn't).

Another expert on this forum suggested there is a way to calibrate the fuel level switch, but I can't see how that is done just from looking at it. I hope that someone can tell me how they adjusted their unit, so I can get my fuel gauge to read correctly. Here are a couple photos of the fuel level switch:

 

[RickM39]

If the gauge reads F with the float up and E with the float down you could bend the rod going to the float.

That's what I did on my 802 along with moving the sensor up on the bracket.

Mine was off the other way though.

 

[73m819]

A MARKED STICK is the BEST military fuel gauge, fill it up, stick it, work it for a hour, stick it, you now know how much fuel is used in a hour, the ONLY thing the lies worse then a military fuel gauge IS a politician.

It is funny, the fuel gauge is one of the most important items on any vehicle, but the MOST unreliable item on any military motorized piece of equipment, it just makes you wonder.

 

[Guyfang]

Ah hah, This is an old style sending unit. Try bending the wire like RICK- M39 suggested. Newer sending units come with a different setup. Pictures are better then a thousand words!!