2017 Kenworth T680 MX13 air leak

Helping a buddy with an air leak on his 2017 Kenworth T680 MX13 10sp Eaton auto. Found the source to be a fitting on a component that is above the top of the trans bell housing and looks to be mounted to the bottom of the floor of the cab.

The air line is green 1/4" poly and runs to the air dryer manifold.

It is one of the most difficult components to get to on this truck. I have to sit in the drivers side wheel well and reach up from under the truck frame between trans and frame. I am able to barely touch the fitting with my fingers at the full length of my arm. I can 100% confirm the leak but there is not enough room to even pull the line and re-seat it. Surely will not be able to get the fitting off and put on a new one. The leak is most likely from the o-ring inside the push-to-connect fitting.

Anyone know what component that is? How to access it? Maybe a secret floor panel?

Thanks for any help.

 

Very difficult to get any kind of usable picture. Many other components, cables and tubes in the way. Can barely spot a little bit of the green 1/4" tube. Will see if I can get something tomorrow.

 

139015 .
Just disconnect shocks by airbags? Any other wiring or tubing to watch for? Any specific place to jack? How much travel should I be able to jack? Any other things to watch for?

 

Thanks for this info and drawings, very helpful. Found taking the drivers side mud flap off gave me a little better view of the EOA bank but the supply is on the other side where I am not able to see or reach very easily. Not confident enough to jack the back of the cab, it is a double bunk.

 

That is good to know. I did feel around with the one hand I can get in there but just could not get comfortable with how it worked exactly. If I could see it or have seen one in the past and knew exactly how it was working I might go after it with pliers. But it is only a leak right now and I don't want to disable the truck and not be able to get it back going.