1990 peterbilt 379 air leaf trouble

Just look at the other 3 should be easy to figure out!

 

Is your main boat still in place through the dovetail ?

 

Take some pictures I’m having trouble understanding exactly what’s slid where pretty simple setups unless cantering bolt sheared not a whole lot to move

 

i agree, always post pictures of your issues. and post to here so we can see whats going on.

 

From the description, it sounds like you have or had a loose set of U-bolts and it let it wear down the saddle on the axle. The factory air leaf should have the air bag pedestal under the axle going to the rear and the springs on top. You mentioned it's a 3 leaf? That's odd, the 3 leaf setup started going by thew when the 379 was launched. The older 359 style air leaf had 3 leafs, my 92 had 2 leafs. Make sure you have the identical setup on each wheel end, I'm sure you did. I think I'd have to take the U-bolts out of that axle, lift the truck up high enough to inspect and see what the saddle looks like for the springs to set on.