2008 Volvo shaking

How far is it to nearest dino where they can run it up to and past theshake could be injector u/joint1/ vibration= repeating motion felt by driver 2 =harsh ride felt by driver 3= pitch/back slap frount to back motion of the truck felt by the driver 4 bounce or hop up an down motion of truck. Any of these felt by driver when prob.is going on?

 

If you have allready CK. to be sure all U joints are lined up then,You can use the old fashion way of puting truck on 4 jackstands under axel and watch it to see where it starts vib. from, driver must be ready to push in clutch an hit brake before it comes off jackstands if you cant chain it down to floor.

 

All The wheels must be off the ground to see witch is starting the vib. Chaining the truck to floor is safe but if test driver is ready to push in clutch an hit brake when shaken gets bad. I have had a inj. do same thing suake till it got up to speed then clear up at speed, it is worth paying to put on the wheel because they can hook up to it while its spining to see if inj. is cutting out, and witch wheel is jumpin 1st.

 

Check this one out - a tire with what seems to be just a little runout can be a problem

http://www.thetruckersreport.com/tr...7-whats-causing-my-vibration-front-truck.html

 

Did you check the torque bar ? I replaced it twice; snapped and also pulled the bolts out of the frame; but I believe you have the drive line unbalanced,bad leveling valve or bad clutch

 

In my KW T700, I can actually feel when the trailer has one or more "bad tires" such as old, badly worn/cupped steer tires, or drive tires from out Freightliners that do strange wear patterns to drive tires, and these then get retired to trailer duty. With these, they usually are felt in the tractor at/above 62-64 MPH typically. We do a lot of drop and hook, and I'd say 2 in 10 trailers have tire issues (where tires were replaced or swapped) that can be felt in the tractor at highway speeds, loaded or empty. And we are 100% air ride truck and trailer.

I doubt this is your problem bit I'm just mentioning this as yet another possibility.