Freightliner springs

Hard to really say without seeing it. But yes, have been behind lots of older trucks bobtailing. See the rear air bags leaning. Usually due to many miles and wear. May want to have someone that is knowledgeable to get a opinion. Thing is once those air bags lean, they tend to push that direction. Slowly making it worse. You know..trying to lean more. May be a expensive fix. But it's not gonna heal, unfortunately. But it could be a bushing issue.? Not as expensive.

 

Also new spring bushings for sure..

 

I see a lot of them off, or crooked. Even on some newer Trucks. Definitely check bushings as mentioned, But also, check the mounting brackets themselves. Top and bottom, they have a lot of wiggle room. They can be loosened up, turned or twisted, however you look at it. Then tighten up. I’ve noticed this while changing airbags out. All 4 10 yrs ago, and again 2 yrs ago. I had to redo one of them, last time, as it was crooked. If changing them out, be sure to get new fittings, and compression ferules. Makes the job a lot easier.

 

Loose u-bolts.

 

What about rusted out alignment pins? Do they have them on rear springs? Like on front springs/ blocks?

 

Read this PDF.

 

Are you sure the ride height is set right? Shouldn’t bottom out, unless it’s too low, not enough air, and bad shocks.or a bad leveling valve, causing inconsistency. I think you need to loosen each bag, starting with the worst looking one, loosen, the top bolts on air bag, at the bracket.one has the airline to it, also loosen bottom bolt. Twist/turn the bag, getting it as straight as possible. The top of the air bag has a dimple in it, that lines up with a dimple in the top bracket. It’s a elongated dimple, so you can turn/ twist the bag, quite a bit, and still be bottomed out flat against top of bag/ bracket. Wouldn’t hurt to loosen two bolts for bracket at the frame also.. If the springs are twisted, maybe from sitting in a twisted position for so long,I think they could be taken off and swapped, side to side. The bulletin has the proper measurements for everything.