Originally Posted by Fred Smith
What is the maximum in inches that air bags can level a coach fore and aft, side to side?
Like the others, I haven't actually measured it, but agree that air bags can't make adjustments as large as jacks can.
There are two times when mine hits maximum adjustment side-to-side and front-to-rear.
On the road in front of my daughter's house, the road slopes about 6 inches over the width of the coach. It does a fair amount of creaking as it leans to the left, but it does get level. Both my wife and two-year-old grandson have difficulty climbing into the coach when it's leaned that far.
When entering a driveway that slopes up, the trailer hitch sometimes drags. For these, I get a guide to let me know when the hitch is about to touch down. I stop, put the coach in neutral and put on the parking brake. I then lower the front as far as it will go and lift the rear. My guide tells me this lifts the hitch about 10 inches. I can then immediately move forward before the coach gets completely back in travel mode.
The coach is 40 feet long, which means my left-right and front-rear numbers don't match.
I also level the coach to fill the fuel tank, if it isn't level, the tank either doesn't get completely full or it leaks fuel from the low side.