Truck shaking??? Help!!!

From what I understand when Freightliner gets that shake it means that at least one tire is out of balance. Was your Rim damaged at all?

When you had the tires replaced did they use balancing beads or something else to balance the tires?

 

Tire out of round, or out of balance. If the steering wheel shimmies back and forth, it is a steer tire. Wheels can be balanced, but not spinning true and be out of round to cause the shake/bounce. Need to jack up the axle, and spin the wheels as fast as you can and watch the top of the tire to see if it going up and down as it spins to show it is out of round. This can be caused by a bad tire to rim mount, or sometimes the wheel is not perfectly centered on the hub.

 

I’m not 100% but I think I’ve heard there is a mark also on tires that is supposed to be mounted opposite of the air stem??

 

I prefer to use a wood block on the floor. Do not turn the tire in the direction it can get sucked under the tire. You need a spinner and a looker. With some tires I will do this with the block square to the tire. Then offset to check the outer rib on on each side. Only jack up one side at a time. Jack in the center can allow the truck to rock and you are looking at a lie.
Truck tires are not nearly as true as most folks would thank. About 1/8 inch out of round is probably pretty common and not a problem.

 

Yeah, the last shop I worked at had a great wheel spinner made by Hunter that could get the wheel up to highway speeds. I would pick out the stones and then spin her up and bring a tire crayon very close the tire tread surface so only the high spot would get marked. Stop the tire, relocate your high spot, loosen the wheel nuts, let it sink down and retry. This would cure 90% of shakes literally the first time.

 

Also a the easiest time to polish your drives. The quality of the polish job is a direct correlation to your combined braveness and stupidity!

 

check cab mount bushings