Topic: Fuel sending unit


FMOldtimer    -- 03-20-2020 @ 9:35 AM
  Hi,

So guys, please tell me how to deal with the fuel sending Units. Mine original one are rotten and those repro stuff doesn't work at all.
The system are different so it never can work properly. The original gauge works with a bimetalic and has a heat coil in it. We tried to adjust the gauge to a repro. Works 2 days now it's burned i think.

Any source for finding a NOS?

Regards Fabian


carcrazy    -- 03-20-2020 @ 1:14 PM
  What year vehicle are you working on?


MG    -- 03-20-2020 @ 2:14 PM
  They're very hard to find and very spendy. Here's a NOS unit from a seller on eBay > https://www.ebay.com/itm/1952-1953-1954-1955-ford-mercury-wagon-sedan-delivery-nos-fuel-tank-sending-unit/283460769371?hash=item41ff94165b:g:KqkAAOSwPWRZPDX8

The NOS sending unit itself is common to many model years - one that fits a '37 will work in a '53 but the arm length will be different and have to be changed to accommodate the tank you have. NOS Units are 6 volt positive ground units....



FMOldtimer    -- 03-20-2020 @ 7:12 PM
  It‘s a 1936 sation wagon.


FMOldtimer    -- 03-20-2020 @ 7:14 PM
  Nice, thank you. Are used ones rebuildable?
If yes are someone do that, so i could send an old one to get rebuild.



MG    -- 03-20-2020 @ 9:02 PM
  Yes, used ones are rebuildable.
See > https://www.bobsspeedometer.com/1/120/services.asp


39 Ken    -- 03-21-2020 @ 8:48 AM
  Before I would send the sender to Bob's or buy a new one for $300 YIKES,I would pick up a can of contact cleaner, LPS Contact cleaner is what I use, and clean up the electronics that are under the cap.

Pry off the top carefully and lay it aside. Spray the inside with the cleaner holding the can far enough away so there is not too much pressure hitting the inside wires (very fragile).

You can carefully open the contact set to get the cleaner between the points. Did I mention do it all carefully? Everything in there is fragile and must be handled with care.

There is also a resister in there that must be checked to insure that the fragile wire is in tact. I use an OHM meter to check this. I then hook it up to a spare gauge and 6 volt battery to check the operation of the system. Otherwise, re-install in the car to check the operation.

I know that TomO has also done this and will chime with his take and he may have a picture or two help.

Ken

edit: I just noticed your car is a '36. My description covers my '39 on up to at least '51 and maybe higher. TomO has a '36 so his reply may be different.

This message was edited by 39 Ken on 3-21-20 @ 8:52 AM


TomO    -- 03-21-2020 @ 3:49 PM
  See this topic.

https://www.earlyfordv8.org/forum/viewmessages.cfm?Forum=14&Topic=11835&keywords=sending%20unit

I do not have a 36, I have a 40 Merc and a 53 Lincoln.

You can test the dash unit by grounding the wire to the sending unit and then turning on the ignition switch for a few seconds. The needle should move toward full if the gauge is good.

Tom

This message was edited by TomO on 3-21-20 @ 3:52 PM


sarahcecelia    -- 03-23-2020 @ 5:09 AM
  I got real LUCKY!! A Ford friend in North Carolina sent me an "original sender" that works about a year ago. (He said he didn't need it) Last week or so, I sold my 1950 sedan. The guy said there was rust in the tank, so he got one, and the after market gauge, from Carpenter. I bought the old tank and "original Ford gauge" from him for $60.00. I found a place prior to that puchase, that would "Reconditon" that fuel tank to my satisfaction, locally, for about $250. I wanted it for my Crestliner, which has a re-pop tank and gauge in it now. I think I got a real deal!! ( And I'll have a spare Ford sender that works!!) LUCKY ME !!!

Regards, Steve Lee


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