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185 fuel guage
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cowkicker View Drop Down
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Joined: 21 Mar 2010
Location: Ky
Points: 529 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cowkicker Quote  Post ReplyReply Direct Link To This Post Topic: 185 fuel guage
    Posted: 29 Apr 2020 at 10:53am
185 fuel gauge not working. Tank is completely full and gauge only shows 3/8 full. When working sending unit by hand through the complete range, gauge will only go from empty to 3/8. Sending unit ohms at 0 empty and 29 full. With sending unit wire unhooked, gauge shows full and when grounding the sending unit wire, the gauge reads empty. Any suggestions
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DMiller View Drop Down
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 33882 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2020 at 11:42am
Sender has failed, the little resistance strip is shorted internally. IF buy a replacement as I had, will find the float leer either on backward or inverted on the sender resistance head where stay full all the time, took quite a bit of adjusting to make work reasonably well.
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cowkicker View Drop Down
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Joined: 21 Mar 2010
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Points: 529 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cowkicker Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2020 at 7:58pm
Gauge hasn't worked in a while , but when it did work it worked correctly. I took the sending unit out and float had come off. When I had the old sending unit in hand , I hooked the wires backup and that is when I noticed that the gauge only went to 3/8s full. Being I had to have float I ordered a new unit from agco and it is doing the same thing with the gauge. Both units ohm the same. What are chances new unit would also be bad in exactly the same way? Anyway to check a gauge other than grounding it? Anyway to check with meter across the posts on the gauge?   
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bradley6874 View Drop Down
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Joined: 05 Sep 2010
Location: salisbury md
Points: 1349 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bradley6874 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2020 at 8:15pm
If holding in hand make sure its got a good ground. Wire conections are the only thing common to both reading the same incorrect level
You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul
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cowkicker View Drop Down
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Joined: 21 Mar 2010
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Points: 529 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cowkicker Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2020 at 9:16pm
Originally posted by bradley6874 bradley6874 wrote:

If holding in hand make sure its got a good ground. Wire conections are the only thing common to both reading the same incorrect level
had a good ground wire from unit to tractor
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