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Old 10-06-2020, 02:35 PM   #1
MyTwOfOrDs
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Default Couple 46 F5 ?'s

So I picked up this 46 3 ton. I'm fuzzy on a few things.

Fuel gauge sends a steady voltage and peeks gauge to full with new sender and wires

The non bearing bearing. Ya the one that holds the fan. How often and amount to oil? It already smoked and I had to bronze bush

Knob on floor to right of gas pedal?????????????????????????????????

THANK YOU
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Old 10-06-2020, 04:17 PM   #2
jimTN
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Default Re: Couple 46 F5 ?'s

F series trucks did not start until 48. Knob on right sounds like a foot rest so you foot does not bob on the spoon feed acelelater.
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Old 10-07-2020, 01:41 PM   #3
rotorwrench
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Default Re: Couple 46 F5 ?'s

Ford used King Seeley gauges and senders back in the day and no reproductions are available for them. The senders work on a different principle of current control than the more modern resistor type sending units. Many times the old originals can be serviced and made to function normally. They use a heater coil to move a bi-metallic strip to control current through a rapidly oscillating set of points.

The modern replacement senders work on the normal resistance rheostat principle as was mentioned and they will not allow the gauge indicator to function through out the whole range of movement properly since they only work in a specific range of Ohms. A person is doing good if they can get it to at least let them know if the tank is low on fuel or not.

Parts are available for the free journal type fan bearing assembly and they really aren't all that expensive. Here is a link to Mac VP's info on them.
http://www.vanpeltsales.com/FH_web/f...ervicetips.htm
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Old 10-08-2020, 04:37 PM   #4
JSeery
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Default Re: Couple 46 F5 ?'s

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Quote:
Originally Posted by MyTwOfOrDs View Post
Fuel gauge sends a steady voltage and peeks gauge to full with new sender and wires THANK YOU
The sender functions as a controlled ground for the gauge. So, you should have full voltage to the sender. The sending unit needs a good ground, it normally grounds through the fuel tank mounting, but if you don't get a good ground adding a ground wire from the sender mount to a known good ground is a good idea. You can check the grounded sending unit by moving the float arm up and down and see what you get on the gauge. It does not read instantly, it takes a bit for the coil in the gauge to change temperatures. Then as rotorwrench posted, it is a bit hit and miss to get the float arm adjusted to a reading you can live with.
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