Nhc-250 fuel leak?

[my blood flows OD]

I started doing the dual fuel line mod and I noticed it seem to be a little wet between the 3-4+5-6 valve covers around the little hooped fuel lines. Is this a common leak area?
If so what needs to be replaced? O-ring? Is this a Cummins only speacial part?
I don't want to take it apart and disable the truck till I know where I can get the parts.

 

[red]

Direct from a large truck service dealership/parts place is the easiest way. Peterbilt, KW, Volvo, etc.

 

[my blood flows OD]

Thank you for your reply. Do you know what the part is called?

 

[red]

Not off the top of my head. The parts people will want your engine serial # to look it up.

 

[my blood flows OD]

Thank you for the advice. So it is definitely not just basic O-rings? Good thing I asked and didn't just tear the truck apart and disable it without the proper parts to fix it thank you

 

[73m819]

IT IS A Oring, 4 is needed for the fix

 

[WillWagner]

Its called the fuel jumper. The screws can be very tight, use a bolsterd screw driver with a good flat blade, not all worn out, to get them out.

 

[my blood flows OD]

So they are just "plain Jane" o-rings?

 

[simp5782]

So they are just "plain Jane" o-rings?

Your local cummins dealer can look them up thru their parts book or a rubber and seal place would be able to match them up.

Even a hydraulic shop.

Sent from my SM-G935P using Tapatalk

 

[my blood flows OD]

I got a few o-ring kits in the shop. I will match it up and let you know what size for other people searching in the future.

 

[WillWagner]

Just make sure you get an o-ring that the low sulfur fuel won't attack, viton or I believe buna-n. Just a plain rubber o-ring might not like dieselgas

 

[simp5782]

Ill be helpful. Click on the manual. Page 6.#24 Cummins #131026 Found at Napa FELPRO # 406. $1.70 ea


https://www.steelsoldiers.com/showt...e-only-parts-manual-for-800-900-series-trucks