POTD a little more work on our Case 580 backhoe. The fuel gauge hasn’t worked in 20 years. My work around had been a dowel dropped into the fuel tank to check the level. I knew what the problem was, but was too lazy at the time to fix it. Looking in an access hole above the tank, I could see mice had made a nest on top of the fuel tank and had chewed through the sender wire.
Fuel sender is below the access hole next to the fuel fill. Impossible to get to unless you pull the front of dash which supports the air filter and hydraulic system filter
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Hard to see, but the sender and its chewed through wires are visible through this hole (along with a large mouse nest)
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Okay, the sender has one lead, but the harness has two leads. So what am I missing?
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As long as I had the engine cover off to take care of my fuel issue, I figured I might as well fix the fuel gauge too. I pulled the front of dash to get access to the top of the fuel tank and noticed a 2nd wire was chewed through also. I pretty sure this must be a line to a pressure switch (?) at the hydraulic filter. Threw a wet towel on top of the tank and soldered extension wires to both leads. Then ran a length of flex conduit over the leads to give future mice a bit more of a challenge.
Ah, the second lead goes to a pressure switch at the hydraulic system filter. Soldered on extensions with a wet towel over the fuel tank.
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And slipped the leads into some flexible conduit. Hopefully something mice don't like the flavor of!
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And all back together and ready to dig! It was 90+F today, supposed to be down to 80 early next week. I'll post some photos of the Case in action.
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I didn’t show it, but I fired up the backhoe and the fuel gauge is working. Now what to do with my fuel “dipstick”?
Thanks for looking, Bruce