truck riding rough..

Are you in Indiana?

 

Are you just recently pulling a spring ride trailer? It makes a huge difference in how the truck rides.

Also, a Hendrickson suspension on a trailer with Sure Lok that is stuck, will make it ride like you have concrete springs.

 

That's the problem they are not supposed to be hard, they are not supporting a lot of weight.

 

incorrect leveling valve adjustment can also cause strange vibrations in ur driveline, like a bad ujoint. If u can get to cresson ridge diesel garage ( south west of Altoona pa) they will adjust the leveling valve by the driveline angle, really good shop there

 

Not true.

 

Every suspension has a proper height adjustment. Must measure from a point on the frame to a point on the drive axle. Some measure from ground to frame. there is a setting/measurement and CAN NOT be preset.

Call freightliner and they will tell you what the measurement is and where to measure.

 

The best advise here is to go to good shop. Lot of things can cause choppy ride. Front leafs flattened, leveling valves, three axle alignment, shocks.