Rear wheel hopping and front drive axle spinning

If the truck has air ride on rear ends it may be set too hi or not able to reset its ride hight due to a bad air ride valve?

 

The axle hop in turns in the rear most axle means you are not dumping air bags to allow that axle to sort of float. I recall from my spread axle days with a Ravens we had a dump valve to deflate the suspension on that rear axle as it pivots on the forward one that is still inflated, effectively raising the whole trailer onto the front axle to pivot. The rear axle will sort of shimmy and shake as you come around which is way better than tearing the tires up trying to pivot with the whole thing on the ground.

Im not certain about drives. In my experience the first axle gets power first. The next axle is generally a bogie for weight purposes. It DOES have power to it, but as a helper. If that one spins, there is a good chance there isnt enough for the front drive to pull and you stall.

Im less worried about the drives behavior than I am the suspension problem.

 

Power goes to both diffs equally. Power driving only one diff is a very common myth and I don't know why people keep spreading that BS. The reason your front drive axle spins first is simply because it has less traction than the rear diff.

 

It's not exactly BS. Ive had trucks that did the front spin as well. This is where the interlock came into play. And escalate to chain if needed.

Some of the worst problems happened in the lightest of icing on tiniest of slopes vs the biggest of docks. It's ridiculous calling for a tow to get it the last 50 feet.

To the other, I appreciate the clarification on single truck no trailer. Ours had a tag axle on the front of the drives which needed raising at times prior to turns. The rubber would not take it when loaded and down.

 

Front diff spins without the lockers engaged on my triaxle dump and every single triaxle I ever driven. Maybe it’s a Pennsylvania thing. To get my rear diff to spin I have to lock it in. I’ve been in mud snow and whatever