Rear sway on turns and curves on a Freightliner Century 2007

Torque arm bushings

 

If both those front springs were original, both should have been replaced since the old one is likely sagged over time. You didn't specify which suspension you have but if its the Airliner, they have a tendancy to pound out the spring eye bushings. Other things to check for are loose u-bolts, loose fastners, broken springs, broken spring center bolts and the condition of your torque arm bushings on top of the diff housings.

 

Could your fifth wheel plate be hanging up on your trailer. Either your plate is bent on the bottom of your trailer or your hitch plate is bent. Preventing or impeding your truck and trailer to articulate.

 

Here's another thought. Check your tire pressures. Tire shop put new tires on an old GMC Topkick service truck I ran but they filled the tires to 85 psi or whatever it said on the door jam rather than the 110 psi it read on the tire. That truck swayed and felt super loose in the ### end until I pumped them up.

 

I have the same problem. Did you get this figured out yet?

 

Stand over your drive tires from the side. Does not matter which side for all 4 of them (8 tires back there, 4 drive wheels) Lean over towards the frame from the outside top inwards until you look straight down past the wheel.

If there is any problem at all wit the bearings you will notice that the brake pads are protruding from their assigned places inside the dru,.

Im going to pause my postings today Some rest will assist greatly, and the spelling, grammar is the first to be lost when the symptoms make a assault against me.

 

If you have never changed your shocks out since you bought the truck, and have put over 156k miles on it and you don't know the history of when they were changed last.

Your best bet is to change them as you are long overdue to replace them. You should've replaced them when you purchased the truck as truck shocks are inexpensive enough to replace, but are overlooked when diagnosing a problem

Shocks don't have to leak to be bad, leaking shocks just means you've blown the oil seal. It doesn't mean they're good just because they're dry.

You should replace the shocks every 100k miles or when installing new tires on your truck.