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Old 01-21-2021, 10:16 AM   #1
Sal
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Default Who can repair the fuel sending units

I'm looking for a place to get the original fuel sending unit for my '48 Ford repaired it's a King Seely unit.
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Old 01-21-2021, 10:35 AM   #2
Zeke3
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Default Re: Who can repair the fuel sending units

Contact John Wolf & Co. Inc. Willoughby, OH 440 942-0083 to see if they can help or check out their website antiqueinstrument.com. I have heard good things about them.
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Old 01-21-2021, 11:16 AM   #3
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Default Re: Who can repair the fuel sending units

Williamsons?
https://williamsons.com/
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Old 01-21-2021, 11:52 AM   #4
19Fordy
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Default Re: Who can repair the fuel sending units

Sal, there's a good chance you can repair it yourself. Have you removed the unit from the tank? One common failure is that the brass float develops hairline cracks and fills with gas, inhibiting it's operation. Do a Fordbarn search on" Gas tank sending units" and info will appear.

Here's a sample:
https://www.fordbarn.com/forum/showt...+sending+units
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Old 01-21-2021, 01:07 PM   #5
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Default Re: Who can repair the fuel sending units

Quote:
Originally Posted by Sal View Post
I'm looking for a place to get the original fuel sending unit for my '48 Ford repaired it's a King Seely unit.
I think Charley in N.Y. does them. G.M;
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Old 01-21-2021, 01:10 PM   #6
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Default Re: Who can repair the fuel sending units

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Quote:
Originally Posted by 19Fordy View Post
Sal, there's a good chance you can repair it yourself. Have you removed the unit from the tank? One common failure is that the brass float develops hairline cracks and fills with gas, inhibiting it's operation. Do a Fordbarn search on" Gas tank sending units" and info will appear.

Here's a sample:
https://www.fordbarn.com/forum/showt...+sending+units
What’s the secret to removing the top from the sending unit? I have a three or four of them that doesn’t work but I kept them anyway. Would like to try to get them working again.
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Old 01-21-2021, 02:18 PM   #7
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Default Re: Who can repair the fuel sending units

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Originally Posted by Ken/Alabama View Post
What’s the secret to removing the top from the sending unit? I have a three or four of them that doesn’t work but I kept them anyway. Would like to try to get them working again.
They just snap over a lip around the top of the sending unit. Pry it off with a flat screw driver or bottle opener.
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Old 01-21-2021, 02:26 PM   #8
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Default Re: Who can repair the fuel sending units

I repaired a temperature sending unit (they work on the same principle) a few years ago; it was just a matter of cleaning the points. There was even a tiny set screw to adjust them. The BIG problem is getting them apart and the put back together again. They were NOT made for it. It worked fine when I got it back together, but you could tell I had been in there.
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Old 01-21-2021, 03:42 PM   #9
19Fordy
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Default Re: Who can repair the fuel sending units

Ken, Gently clamp the bulging portion of the sending unit below the bolt flange in a vise with protective jaws making sure that you're not clamping down on the float arm mechanism. Paint an index mark on the lid and the flange and then pry off the top cover using a flat blade screw driver or a brake adjusting tool. You will see the adjustable star wheel and resistor.

DO NOT BREAK THAT CARBON RESISTOR. BUT, do check to make sure it's secured by the little holding prongs. You can check sending unit operation of the sending out of the tank by using alligator clips to wire "wire it up". You can use your trunk latch as ground. You don't have to reinstall the top cap each time you adjust the star wheel. Use an alligator clip to attach the incoming 6V voltage to the long springy brass contact. Be very careful not to break any of the fine delicate wiring inside the sending unit. Place the sending unit on a nice soft towel on your trunk floor when testing. Go slow and make sure you wire it correctly.

I spent about 20 hours last month "playing with several units". Adjust and test by manually moving the swing arm on the unit through its path of travel and compare its movement from FULL to EMPTY locations to see if gauge reads sensibly. Re adjust and test. The readjust and test some more. You must have the patience of a toothache.

Make notes of your adjustments made to each sending unit, otherwise you will get frustrated and start going around in circles confused about what you did. That's why you want to color code each sending unit you work on, even though the sending unit part # is stamped into the flange and is covered by the sending unit gasket. It can get confusing. I use $1 store nail polish. Good luck.

Last edited by 19Fordy; 01-21-2021 at 04:06 PM.
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Old 01-21-2021, 04:28 PM   #10
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Default Re: Who can repair the fuel sending units

I want to Thank all of You for your help.
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Old 01-21-2021, 04:46 PM   #11
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Default Re: Who can repair the fuel sending units

19Fordy. Great info. Thanks mate.
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Old 01-21-2021, 04:47 PM   #12
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Default Re: Who can repair the fuel sending units

I took a shot at fixing up a KS sender that was in pretty hard shape, and it works well. A great learning process and a sense of pride for me, even with my miss steps.

The other thing I had to make sure of and adjust, was the range of travel for the float.

I posted on this link.

https://www.fordbarn.com/forum/showt...ghlight=sender
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File Type: jpg IMG_2011.jpg (68.5 KB, 78 views)
File Type: jpg IMG_2012.jpg (68.8 KB, 72 views)
File Type: jpg fuel sender assy - calibration 1951.jpg (73.8 KB, 102 views)
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Old 01-21-2021, 09:10 PM   #13
19Fordy
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Default Re: Who can repair the fuel sending units

51woodie, You are so very correct. That float adjuster chart provides essential and very helpful measurement info. re: correct float travel if you need to rebend your float arm. A fellow Fordbarner posted that chart a few months ago. It's "golden".
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Old 01-21-2021, 09:27 PM   #14
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Default Re: Who can repair the fuel sending units

19Fordy. On the post link I attached, you asked; "It looks like you did some soldering on the resistance wire. If so, please explain why."

Sorry I didn't respond, as I guess I missed the question. I didn't solder anything. What is seen on the wire, seems to be flux or something that was there when I opened the unit.
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Old 01-21-2021, 09:30 PM   #15
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Default Re: Who can repair the fuel sending units

Here is a photo inside one I took apart.
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Old 01-21-2021, 09:39 PM   #16
19Fordy
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Default Re: Who can repair the fuel sending units

Quote:
Originally Posted by 51woodie View Post
19Fordy. On the post link I attached, you asked; "It looks like you did some soldering on the resistance wire. If so, please explain why."

Sorry I didn't respond, as I guess I missed the question. I didn't solder anything. What is seen on the wire, seems to be flux or something that was there when I opened the unit.
Thanks for the reply.
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Old 01-21-2021, 09:40 PM   #17
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Default Re: Who can repair the fuel sending units

Quote:
Originally Posted by JSeery View Post
Here is a photo inside one I took apart.
Does anyone know how to decipher the color code on the carbon resistors and if modern resistors could be used in their place? Electronics is not my thing.
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Old 01-21-2021, 10:39 PM   #18
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Default Re: Who can repair the fuel sending units

Just one more thought. Turning the star wheel clockwise moves fuel gauge needle towards Full.
Turning it CCW moves fuel gauge needle towards Empty.

Star wheel is for fine tuning the gauge NOT for major adjustment of float arm position.
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Old 01-23-2021, 10:41 AM   #19
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Default Re: Who can repair the fuel sending units

Much thanks to 51woodie for posting that fuel tank sending unit drawing. I took photos of it that may make it easier to read when you click on it. It's a must have drawing. Print them out for future reference. The 01A-9275-A part # is for 1938 to 1940 Ford cars.

I am still wondering how to decode the color bands on the carbon resistor inside the unit. My thinking is that perhaps a modern resistor could be used in its place as I broke a resistor.

Or, maybe I am incorrect in assuming it's a resistor. Electronics is not my strong point. Can someone take an ohm reading off it with a meter? Or, is it some other type of component. Anyone know what Ford called it and what was it's purpose?

Notice that the info. box in 4th photo is for a 12V fuel tank sending unit. Where were they used? Would be neat to see the gauge cluster that was used with that unit and in what vehicles it was used. Perhaps fire trucks, airplanes, heavy construction/industrial applications? Anyone know? Thank you.
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File Type: jpg IMG_6541b.jpg (52.8 KB, 31 views)

Last edited by 19Fordy; 01-23-2021 at 11:03 AM.
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Old 01-23-2021, 10:01 PM   #20
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Default Re: Who can repair the fuel sending units

Notice that the info. box in 4th photo is for a 12V fuel tank sending unit. Where were they used?

My guess would be when Ford switched to 12V.
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Old 01-24-2021, 09:54 AM   #21
19Fordy
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Default Re: Who can repair the fuel sending units

Mr. Seery: Do you know if the early 12 V sending units look the same as the 6V or was the design entirely different?
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Old 01-24-2021, 10:37 PM   #22
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Default Re: Who can repair the fuel sending units

I do not, I need to check into that. I know they used the same basic system into at least the 70s, but not sure how similar they were when compared side by side.
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Old 02-03-2021, 01:22 PM   #23
Sal
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Default Re: Who can repair the fuel sending units

I just reinstalled the fuel tank sender on my '48 Ford. It was repaired by John Wolf company in Willoughby Ohio. It was pricey but it works fine now. Thank You to all who responded especially Zeke who gave me the name of the repair place.
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