19 Rebel air suspension help needed!

I have a 19 Rebel with air suspension, out of warranty. My compressor died verified by my local shop and I noticed my truck would lose driver side air every night and the front would be on the ground. I ordered a new bag for the driver's front and air compressor but for the life of me I cannot find any guides to replacing the compressor and strut. Any tips on disconnecting the air line at the struts? Also I read the old systems in the previous Gen had nitrogen, is this still the case and I need to get the system filled?? Please help thank you!