Fuel Sending Unit
Tech article by Jeepster and filed under Electrical, Gas TanksTech article by Dan Thomas (Jeepster)
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- Sending unit.
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- Plug
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- Back of plug with wire.
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- Straighten the 3 tabs on the “box” to remove.
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- Carefully remove
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- Inside check for spring and general condition.
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- In this photo you can see where the contact arm rides on the wire windings. If the tank has sat with gas in it for a long time, the fuel might have turned to varnish and coated the contact arm and windings. A very light rubbing with steel wool should clean it up. Careful not to damage wire.
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- Another view.
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- Check winding for resistance,opens,shorts with a meter. Here the resistance should be ~70 ohms
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- About 10 ohms here.
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- There might be varnish built up on this end of the shaft here. Give it a little cleaning and the halfs will seperate easier.
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- Work your way around to all the contact,solder,wire joints to check for continuty, shorts, opens.
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- Reassemble, bend tabs.
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