M1009 Fuel Sending Unit Parts

[JonELucas]

The Fuel Sending Unit in my M1009 has gone bad. I did all the appropriate troubleshooting per the TM to determine that the Sending Unit is bad. I have been looking through manuals, forum posts, and parts stores and haven't found the appropriate parts. The 1009 Requires a 4 outlet Diesel Sending Unit.

Has anyone found a 4 Outlet Diesel Fuel Sending Unit that has a part number that I would be able to order? I would like to replace the tank with the 31 Gal, but at this point I'd be fine with something more standard.

 

[Barrman]

Here is where I got mine. They have the bigger tanks and hangers as well:

https://www.lmctruck.com/fuel-system/gas-tanks-parts/csb-1973-91-gas-tank-and-components

 

[JonELucas]

They do not list a 4 outlet for Diesel. Did you go with a 3 Outlet? Or a Gasoline Sending Unit?

My understanding of how sending units work is that it reads the resistance of the fuel (gas and diesel apparently have different resistance)

 

[cucvrus]

You only need a sending unit for the 28-gallon fuel tank diesel 1984 model. No 4 lines are available anymore. Use the sending unit they list for a civilian model. Check out my Wild Weasel build thread I just had the sending unit out and showed how I tested it manually. The 4-line sending unit was the one that had an auxiliary port tapped to the tank for using it to pull fuel from the right rear wheel opening. It had a capped port there. Good Luck.

 

[nyoffroad]

My understanding of how sending units work is that it reads the resistance of the fuel (gas and diesel apparently have different resistance)

It reads the resistance from the height of the float and the float doesn't care if it's in gas, water or diesel.