A recommendation of starting at 70-80psi for the front bags is too high. Your coach is 28ft and very likely has a front GAWR of 4880lb (same as mine 1994 P-30 28ft). The GM manual air bag pressures for a 5000 GAWR are 40psi min and 50psi max. Your min is likely 30-35psi but certainly not 40psi. look inside your closet it will have the weight GAWR ratings.
As for the measurements that were previously given they are NOT what the coach should be when adjusting. They are for determining the 'Degree set' for front alignment....
With respect to checking the ride height on the P series rig it must be measured between the upper control arm and the base of the rubber bump stop (iron to iron) ignore the rubber bumper. It also must be measured perpendicular to the upper control arm. This is with the RV level and air bag pressure at max pressure.
That measurement is then used to select the degree set for alignment. Some have said the measurement is between the top of the rubber bump stop and the upper control arm. This is incorrect. It is iron to iron. And the final measurement only has to do with the degree set for alignment and nothing else.
http://www.offroadtoybox.com/RV/P-Chassis-AlignmentProcess.pdf
dougrainer wrote:
You do NOT have to be an Engineer to KNOW what you have been taught and what you have learned over the years. People like you never let the facts get in your belief system. Curious, HOW MANY ENGINEERS WORK ON YOUR VEHICLES AND ON THINGS YOU NEED FIXED???????????????? Doug
happycamper002 wrote:
Big nonsense, CW replaced the blown airbag and corrected the problem.
How do you explain that.I still have the blown air bag to prove my point.
Try to make more sense in what you say to make yourself believable.
An Rv tech doesn't make an engineer.
