Case 830 fuel sender/gauge

AJ in IL · Jan 20, 2015

Hi, I recently rewired my 830 and found a broken
wire at the fuel sending unit. After fixing the wire
the gauge still doesn't work. It stays on empty.I
have 12 volts at gauge and 0 volts at wire
connection at sending unit. I took a test light from
pos. battery post to tank and get no light.That
tells me the tanks not grounded. Will the gauge or
sender work if that's the case? do i need to ground
the tank? Can i run a wire from a screw that mounts
the sending unit to ground? Thanks for any help.

RJKeith · Jan 20, 2015

AJ,

The sending unit is typically a variable resistor and a float. Rather than using a voltage meter, you need to use an ohm meter and measure resistance with the float in full up and full down position. If they both read the same it is possible that dirt or grime is preventing a good connection with the variable resistor. Move the float up and down a few times and re-measure resistance. If up and down still read the same, you probably need a new sending unit.

AJ in IL · Jan 20, 2015

I'm going to pull the sending unit in the morning. i had a wire hooked up wrong and just changed it, now I have 12 v. at the gauge on the power side and on the sending unit wire side . I was told if i take a jumper wire from the hot post and touch the other post i should see the gauge jump from E to F. It does nothing.Also does the tank need to be grounded for the gauge to work? Thank You

Case Nutty 1660 · Jan 20, 2015

to test the gauge, unhook the wire to the sending unit, turn on key switch the ground the removed wire from the sending unit, if the gauge is good it will peg the needle at full
cnt

AJ in IL · Jan 20, 2015

Thanks, I'll give that a try in the morning and post how that goes..

Paul A Young · Jan 21, 2015

I think the sender needs to be grounded as well as the gauge.

Case 830 fuel sender/gauge

AJ in IL

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RJKeith

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AJ in IL

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Case Nutty 1660

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AJ in IL

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Paul A Young

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