Thanks for all the ideas!
My tractor might have the AC quick disconnects. In the disconnect zone, where the bracket holds the lines, there's a bunch of fittings. They don't look exactly like the hydraulic disconnects with the knurled releases, but they might be some kind of quick disconnect. I will look more closely when I get out to the shop. If I do have quick releases... at the point of disconnect, can I expect a pressure release like hooking up to the air compressor?
Unfortunately, I don't have the truck and trailer to transport my tractor to town. I probably can hire someone to do it but we are heading into winter here, and by the time I get the project done no one will come up my mountain to transport. But next summer I could get someone to do it.
Thanks again.