pps: I don't know
everything about anything, but I do know a
little about a lot of things...including the Spyder.
The RTS is a little different from the regular RT or the A&C. It fills or empties the system to a specific ride height, not a specific pressure. A light rider will require less pressure to achieve a particular ride height than a heavier rider, cargo, or a passenger. In addition, as long as the engine is running and the Spyder is in gear, the ride height will adjust. Mine bleeds off pressure when I stand on the pegs to see where I am as I park in the garage, then pumps back up when I sit down.
The best way to see if the system is working is via BUDS, so your dealer should have been able to test it. First, they should follow the procedures in Warranty Bulletin 2010-6, to see that the ride height sensor was correctly installed (many were not done right by the dealers), and that the sensor linkage is not bent (easy to do). There is a new calibration procedure for the ride height sensor, and it should be followed as described in the bulletin. After the sensor is correctly set, the sensor output, compressor function, and solenoid release function can all be verified via BUDS. As I recall, this test requires a weight in the seat, like proper alignment does. As an additional check on the air system integrity, a pressure reading should be taken at the Schrader valve, then checked again after sitting overnight. Any leak-down indicates a system leak, which needs to be located and repaired. There have been several bad air bags and fittings. There is a repair kit and a bulletin on that subject.
If you want to do a quick home test, start the engine and put the Spyder in gear (first or reverse). Have someone measure from the floor to a specific point on the Spyder at each height setting. I suggest measuring from the floor to the bottom of the rear mudflap. There should be a measureable difference between steps, both going up and going down. You should also hear the compressor run going up, and the solenoid valve releasing (hissing) going down. Each step will take a few seconds to complete. Adding a passenger or a weight to the rear seat should cause a momentary lowering, then a full recovery to the original ride height setting.
