You can't.The Air-Ride is great untill,they start dropping down:
The 92 Lincoln Continental Air-ride went flat on me;-Front and then Rear;
Dealership wanted 2500 Dollars; for Four;I purchased mine from E-bay, 175 dollars each cost me 850 dollars,but the work was as hard as an Engine Rebuild;Three years later ,rides good as ever;
I would think about it awhile if Someone asked me to replace theirs;Not an easy task;