[folivier]

Fasteddie on my '93 Newell I had the same thing happen to the passenger air ride seat. The airline supplying the seat mechanism popped off just before the last exit to the Mobile tunnel. I quickly exited and stopped. I found the supply was tee-d off of the generator slide control. Unscrewed the airline from the tee and used an air fitting plug I had in my parts box to plug it.
This is just one style: https://www.velvac.com/products/push-loc...te-plug-12
Very handy item to have, allowing you to quickly stop a leak on a quick connect fitting.