Joe, removing the wheels makes access a lot easier, but with the coach all the way up on the air bags (and securely blocked) it is possible to do the replacement with the wheels on.

Harry, I'd question whether it would be wise to start messing with the length of the time delay. I am sure Prevost did a lot of testing to find a delay that would work under most conditions. I can envision the wrong delay, or different delays on each side causing an out of sync leaning of the coach that at best will give the riders nausea, and at worst a lean in the wrong direction affecting the coach stability.

On long curves the bus should hold the proper attitude regardless of the delay, but on the shorter curves I can imagine that just about the time the valve reacts, the coach comes out of the curve or enters another in the opposite direction, at which point the coach is now leaning the wrong way.