Driver Air Seat Removal

[toomanydogs]

I've been searching for the answer with no luck. I'm almost done gutting our bus but I cannot seem to get the air tube unhooked. I've attached photos. The tube goes straight under the bus to a t-bracket with much the same hookup as those in the picture. I was able to follow one side of the line to another t-bracket and then to a black plug, which I regrettable forgot to get a pic of. Any help would be great. I dont want to mess up my air brakes if they are in fact connected. Thank you in advance.

[somewhereinusa]

In middle picture that is a push connect fitting. Push brass part toward center and pull line out. I would just cut the line and replace with a compression fitting. I've not had good luck reusing the push fittings. Be sure you get the inner sleeve for compression fitting used with plastic line.

[toomanydogs]

Sorry for the late reply. Thank you so much for your response. It worked perfectly. I knew that was the key but just couldn't figure it out. I was pushing and pulling and twisting, but never considered that the gold piece wasn't part of the tubing I was trying to detach.

Bottom line is the seat has been removed. Thank you again.