Leaking air from firewall.

Air is leaking(when I press in yellow brake button). I removed the line and made sure the line wasn’t cut or anything however, in the 2nd picture it’s leaking from that yellow fitting. Does that whole assemble need replacing or is it possible to just replace that one?

on a w900 glider….

 

Yeah, it doesnt cause any real air loss as long as the truck is running/going down the road. Its just annoying to hear while driving. I really hope thats not the case. Seems pretty tedious to do.

 

Yea I did that, I cut a fresh piece and plugged er back in and still leaking......

 

Ok, I guess I’ll be visiting kenworth tomorrow morning

 

I’m gonna see if I can get them sooner. Amazon says up to 5 weeks for delivery.