air leaf sway

If your suspension is Air Leaf it will have Air Leaf embossed on the spring hanger bracket.
Do you see rear axle shift when loaded while turning when you watch in the mirrors?
Check your torque bars for any free play, there should be no movement and if any is detected replace.
If your axles have been shifting, rebush the rear suspension as the shifting trashes the bushings real fast.
Verify your ride height is to spec.

 

I also have a dump with air leaf. It scared the crap out of me too at first. What helped more than anything was measuring the air bag height. I found it to be aired up too much. After lowering the bags it still has some sway,but it's driveable without feeling like its going to turn over any second now. Another thing that will help if this is a converted road tractor is to replace the 2 leaf front springs with 3 leaf 18k pound front springs. I've gotten use to my truck and how it feels, but I still am very cautious going around curves and corners.

 

Ride height. Are the bags bulging?

 

Not sure on the on the stuck issue. What tire tread are you running? Are you running the fat tires on the steers? 11" on the ride height would be correct on Air Trac.

 

Ok, I talked to the boys running air susp off road and this what they all said:
To eliminate sway you run two leveling valves, one to control left side and one for right side.
To eliminate constantly getting stuck you run two leveling valves and plumb them to control front drive and rear drive independently.
Since you can't do both you'll either be swaying or getting stuck.
In addition they say to always dump the bags before dumping load.
They say the air suspension is only good for paved or gravel road use.
They run either Hendrickson walking beam or Chalmers suspensions.
Now you know why it was such a good deal.

 

Slow down, adjust fire to your new equipment. You will be a better driver. Every vehicle is different, day cab, spring suspension, tire type, etc. You get used to what you drive, if you drove a truck with air leaf since you started driving, you'd have never known the difference.

 

On the milk I drove for a while 6,000 gallon smooth bore on four axles, yes legal 80,000 farm to factory.
it had rubber load helper blocks in the front springs when empty they didn't touch down, so you got as good of a ride as 20,000 pound axle gives, loaded it settled down on them and helped the handling.
you can get them from Truck Repair in Fort Madison Ia.
They aren't a cure all but another tool in your arsenal.