Mep-002a fuel return line

[BrutusM37]

Where does the return line from the injection pump to the fuel tank connect on/near the injection pump?

Bought a Mep-002a a year ago, runs fine, carries a load, etc. Fuel return line (says “From Inj Pump” on tank end) was just dangling under the engine. Checked the TM but nothing definitive in the schematics. Is there supposed to be a tee fitting on top of the IP where the return lines from the injectors join and connect? Pictures attached.

If that’s the case, I’ll gladly buy one if someone has a parts unit available unless it’s a generic item. The next question is why did someone modify it?

 

[Ray70]

You're correct, that fitting on top of the IP is supposed to be a Tee with the return line pointing forward.
It's a flare fitting, 1/4" tube I believe.
You can probably find it at a good auto parts store, if not I have them.

 

[BrutusM37]

You're correct, that fitting on top of the IP is supposed to be a Tee with the return line pointing forward.
It's a flare fitting, 1/4" tube I believe.
You can probably find it at a good auto parts store, if not I have them.

Thanks you for confirming my suspicion! By “front” you meant the control panel eng of the gen? I’ll see what I can track down. I wasn’t sure if it was some special fitting since it looks like 1/4” flare from the return line (as you mentioned), NPT into the IP, and AN/JIC to the tank return. Adapting to AN shouldn’t be hard since I have space in that direction.

 

[Ray70]

Correct, towards the control cube.
Only down side is that you may have to either remove some sheet metal or remove the IP to get the fitting in.
The vertical end is usually touching the underside of the sheet metal when installed.
Is the end of your return hose a Female JIC? I can't recall without going to look if that fitting has a male 1/4" JIC threaded into the side?
So you're going to end up with 1/4" Male NPT on the bottom into the IP, 1/4" flare tube on top and probably 1/4" Female NPT with a JIC to NPT adapter for the return line.

 

[Guyfang]

UGGGGGGGGGGGGGGGGGGGGGGGGG!

Control panel is ALWAYS the back.

 

[Light in the Dark]

UGGGGGGGGGGGGGGGGGGGGGGGGG!

Control panel is ALWAYS the back.

You would think with all of the normalcy around politicians talking out of their ass, we would remember this detail. The back is the new front

 

[BrutusM37]

Yeah, it’s pretty tight in there. Hopefully I don’t have to pull the IP but that shouldn’t be too hard (famous last words).

Yes, the return to tank line is female AN/JIC.

Thanks for the clarification on which is the front. I’ll have to spin the unit around in the garage so I look at the right end

Thanks again for the help!

 

[Guyfang]

Do I detect, an insincerity here? Since 1973, its been drilled into my head. Cooler/radiator, front. Control panel, back. That means the right side, is always the right side. Ohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh, you civilians.

This is a very important fuel line. Because as long as it sends fuel back to the tank, you know its getting to the IP.

 

[BrutusM37]

Honest question with a touch of sarcasm. I didn’t know what was officially the front. Now I do.

And who are you calling civilian? When I was active my gens put out 425 kW each, I could parallel all three if desired, and I knew which end was the front (kinda obvious when they’re mounted to the hull of a ship).

 

[Light in the Dark]

My response was as sincere as Pelosi is ugly.

 

[Guyfang]

Honest question with a touch of sarcasm. I didn’t know what was officially the front. Now I do.

And who are you calling civilian? When I was active my gens put out 425 kW each, I could parallel all three if desired, and I knew which end was the front (kinda obvious when they’re mounted to the hull of a ship).

Et tu, Brutus? Could not help myself, had to toss that in here!

I most humbly apologize! Had I known you were a Squid, I would not have included you in my statement. I am deep into Led Zep, good German beer and a long day behind me. Practicing my beer drinking for next week.

Rich, I figured nothing less!

Everyone stay healthy!!

 

[BrutusM37]

Honest question with a touch of sarcasm. I didn’t know what was officially the front. Now I do.

And who are you calling civilian? When I was active my gens put out 425 kW each, I could parallel all three if desired, and I knew which end was the front (kinda obvious when they’re mounted to the hull of a ship).

Et tu, Brutus? Could not help myself, had to toss that in here!

I most humbly apologize! Had I known you were a Squid, I would not have included you in my statement. I am deep into Led Zep, good German beer and a long day behind me. Practicing my beer drinking for next week.

Rich, I figured nothing less!

Everyone stay healthy!!

No offense taken! However, I was a puddle pirate, not a squid.

 

[Guyfang]

That's something I have NOT heard in a long time!! Puddle Pirate. Now I know your good!