I just did the air springs on my second Lincoln Town Car. I used long needle nose pliers to get the clips of both cars. My 96 had a strange clip like a back to back "R" clip and the 03 had a regular "R" clip on the top. To remove the air solenoid locking clip a long slender flat tip screwdriver works good. I put some light on it and then used the flat tip to pry it gently out on one end while putting a little up force on it and they popped right off.
You can also use a long wire hook to get the "R" clip off the top of the air spring. Then use the extra long needle nose to put it back on. Hope this helps you. Ken