Remove MEP-803A Fuel Drain Well Nut

[gatorbob]

I realize there's a dozen threads on the well nuts and a couple talk about not having to fish parts through the tank by hand. I can't figure out how it's possible to remove the old well nut without removing it from the inside. Am I missing something?

I removed the tank's bottom panel but I think I need to remove the rest of the filler neck so I can get my arm in the tank. Is that right or is there an easier way?

Thanks

 

[Zed254]

Read Daybreak's post and pay particular attention to "Here is how it mounts after being put into the hole. "

The infamous Well Nut info

Howdy, MEP 800 series generator fuel tank Well Nut A-3816 (nitrile rubber) NSN 5310-01-197-1473 and NSN 5310-01-595-3536 It is used to secure piping on your generator fuel tank. Over time and non use they crack and break down. Or, they were overtightened. They start leaking. Here is a new...

www.steelsoldiers.com

When you pull the old one out it may look like this.......

 

[gatorbob]

Thanks Zed254, I completely misunderstood how it was installed in the first place. It seems like it's safe to yank hard on the rubber piece to get it out. Mine is a bit broken and torn up but there's enough to grab on to. I am rereading Daybreak's thread now.

 

[Light in the Dark]

Its not ideal, but sometimes a swift kick to it will pop it out if its real deteriorated (surely a problem when deployed too).

 

[fosgittr]

Its not ideal, but sometimes a swift kick to it will pop it out if its real deteriorated (surely a problem when deployed too).

Or you could be lucky like me, and go to drain the tank and have it pop out in your hands. Then you have diesel spilling all over the trailer and down the driveway. And then nasty looks from the neighbors walking by while you are trying to prevent an environmental nightmare. True story.

 

[Guyfang]

An environmental nightmare. Thats when you roll a 1200 gal diesel tanker, with a 600 gal fuel pod in the trailer full of MOGAS roll over. I didn't do it, but sure had to help clean it up.

 

[gatorbob]

So I got the well nut out on the 803a. All that’s left is a hole in the sidewalk if the tank? I was expecting some kind of fitting permanently attached to the tank.

I guess it makes sense now that the brass bulkhead gets installed inside with the flange on the inside of the tank.

and I didn’t drain enough diesel out of the tank. Sure hope my TSC stall mat doesn’t disintegrate. Sure is swollen up. Would be a real mess to lift this thing again.

 

[Ray70]

You are correct. You should now have just an empty hole. The old well nut was just an expansion type rubber fitting.
install the new one as you described, flange on inside, nut on outside....