Truck is a ’23 W9 with AG400L suspension, 13.2k ultrawide steer axle with 160k miles. I haul 105k gross, with a 50k loaded trailer. 8 axle set up, 4 on truck with steerable drop, and 4 on trailer.
Trying to get some thoughts on the direction I should be going with finding out the cause of my issue. The truck pulls to the right. I got the trailer (tanker) aligned 3 months ago, checked king pins on my rig THEN got an alignment done. I drove the truck after and the pulling got worse, so now I’m swapping steer tires to see if I can possibly counteract the wear they’ve experienced with the misalignment.
I had a mechanic notice my truck sags to the pass. side, but he was doubtful that a truck this young could have a leaf spring pack go bad on the steer axle so soon. What other areas could I look to that could explain my truck wanting to pull passenger side? I have noticed the driver inner side of my 5th wheel near the king pin hole will remove grease and show bare metal more often than any other part of the plate. Could this be a sign of an imbalance in my suspension? Leveling arm not working? Bad bushings? Bad steer axle springs?
Any help would be much appreciated!
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