Originally Posted by Trippers
Astounding. That Jayco would cover alignment under warranty. Almost every Greyhawk sold needs alignment adjustment to improve handling and safety. Spread the word.
Good point. It is my belief that every E350/E450 comes off the Ford assembly line with fixed camber/caster sleeves which have a caster setting about +3.0 to +4.0 degrees of runtime caster. This setting is good for city vans but should be +5 to +6 for highway driving.
The symptoms of not having enough caster on the highway is looseness in the steering wheel (ie a dead zone between left and right), which results in a lot of wandering and instability.
Note: If the rig has a fore to aft nose down of 1.0 degree then the runtime caster off the Ford assembly line is going to be about +3.0 degrees. Having rear air bags on a completed RV will get you here. If the unit is fore to aft level then the runtime caster off the Ford assembly line is going to be about +4.0 degrees. In either case you want to shoot for +2.0 more degrees caster provided by replacing the camber/caster sleeves.