Like he said, I have a freightliner classic, I realized that moving my fifth wheel either causes less or more vibration. The further back the smoother the ride. If you adjust leveling valve height, as well as your fifth wheel position you may eliminate the issue.
try to move ur fifht wheel fower
confirm that bushings on rear end are not loose.
Small crack about a millimeter on rear axle. Front drive axle bushings new
Damn they were sagging an inch? Thats crazy. I am going to tackle this job cause i have some sagging 1/4" or so.
never align up driveshafts, they'll vibrate like hell! always keep all driveshafts in some form of misalignment, so any imbalance will cancel out.
I have same truck and I can't figure out my rear air bags are rise more than the front ones
A RUclipsr Diy Semi mentions new axle tube to spring shims in a video. Mine look fine though
Like he said, I have a freightliner classic, I realized that moving my fifth wheel either causes less or more vibration. The further back the smoother the ride. If you adjust leveling valve height, as well as your fifth wheel position you may eliminate the issue.