showcrop
Well-known Member
I went to town to pick up a few things including some six inch drain pipe and some water softener salt. On the way back I felt a little low rate vibration from the rear. As I crested a hill and let off the gas it got a whole lot worse. I thought for sure the drive shaft was about to fall out. The truck is an '06 F-350 with diesel 4WD, and I had 7 10 foot lengths of 6 inch drainage pipe, and two forty lb. bags of salt in the back. The truck has 92,000 on it and had a new rear brake caliper put on it Monday. I have had plenty of instances of harmonic rear tire bounce driving an empty tandem dual truck, and it seemed like that at first but then it got a whole lot worse. This afternoon after removing the pipe and salt I put it in my shop and got it up in the air and I could find nothing. U-joints tight, both shafts, tires wheels tight, new caliper tight. I even ran it some checking for any movement or out of round. I took it back out over the same stretch of road and now it is as smooth as could be. Any ideas?