I have a T270 carrier - roll back I'm trying to learn how to change the amount of air in the rear suspension. It rides very rough like the air bags have as much air in them as they can hold. It also feels like there is no travel left because they seem overinflated.
Is there adjustment in the leveling valve? I thought the shaft was square allowing only 4 differing positions for mounting that valve?
I drive another T270 that is 6 years older also with air ride suspension that rides much smoother.