Air brake connectors

It leaks because there's a o-ring inside that's dried up and cracked.

Take a needle nose plier and pull the push in connector off and you will see a o-ring inside.

Take a metal L-shaped pick and use it to carefully pick it out, go to the automotive store or a place that sells o-rings and match it.

Put the new o-ring back in the fitting and place the brass connector back in and you have just rebuilt your fitting, just as good as new.

 

Truck dealers, truck parts store, fleet pride.
Napa, advance auto.

The guy at dealer couple days ago called it a " push in" air fitting.
Not sure if that's the official name.

 

That name (push in), or quick connect air line fitting.

 

"Push in" or "Quick Connect" air fitting.

The cut need not be "perfect", but using a razor blade or VERY sharp knife and making the cut as square as possible will help reduce the failure rate.

 

Or you can throw it in the garbage and fit a real DOT brass compression fitting in its place that won't leak after a little bit of vibration.The plastic ones really suck. The only reason OEMs use these is for ease of assembly on the line. We call them quick "connect" fittings. Often mistaken as a quick "disconnect" which most often they are not. I will say a good idea to throw an assortment in your roadside toolbox for emergency repairs, especially the unions. You can fix a rubbed line with a razor knife quick like.

 

I bought a few of several types and 20' of line I carry with me...

https://www.amazon.com/s/ref=nb_sb_...rl=search-alias=aps&field-keywords=mettle+air

 

I wouldn't use those as they are not DOT. I have heard of trucks being downed for the use of non DOT hoses and fittings, especially when it comes to brakes. Should work to get you out of a bind though.

 

I just have them for emergency and then once I used one to fix my air seat...I have 3 sets of brass also...