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sdt

Puppy Poster
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Everything posted by sdt

  1. I can barley feel anything empty I have tried a different set of front tires same bounce, I will look for mud in the spokes I would have thought that something out of balance the bounce would get better as I loaded the truck,I don't know what to think any more . I can haul 750 bushels of corn or 42,000lb. I cant really say I feel it in the stearing wheel as much as it feels like the cab of the truck is bouncing like front tires are way out of round,
  2. I was woundering about the driveshaft the frame was lengthened for the 20' bed any guides for checking the drive shaft was installed correctly ? I did not use balance beeds in tires should I. The drive shaft was built by a machine shop that builds drive lines so I think it was made correctly
  3. I would understand better if it did it empty but the bounce gets worse as load weight is increased
  4. I have a 1978 R Mack with a 20' grain box, after I load it and driving 40mph to 45mph it has a very bad front end bounce until you hit about 50mph and it smoothes out. The truck unloaded drives very smooth.This is my first big truck . I have looked at all suspension and can not visually see anything badly worn, the rear tandems track in-line and had front checked at a tire shop. When I first got the truck it had 10.00x20s on back I thought that was the problem so I put 8 new 11r 22.5 radial retreads on the back(Dayton wheels) and still same bounce.The front has 22.5 radials .I can be driving down the road about 55mph and take it out of gear and let it coast down to 45mph and it will bounce . I have jacked up the truck and the only tire out of round is less than 1/8 ",it is the front,and very min side to side.I have also replaced front shocks Thanks for anyone's help!!!!
  5. I have a 1978 R Mack with a 20' grain box, after I load it and driving 40mph to 45mph it has a very bad front end bounce until you hit about 50mph and it smoothes out. The truck unloaded drives very smooth.This is my first big truck . I have looked at all suspension and can not visually see anything badly worn, the rear tandems track in-line and had front checked at a tire shop. When I first got the truck it had 10.00x20s on back I thought that was the problem so I put 8 new 11r 22.5 radial retreads on the back(Dayton wheels) and still same bounce.The front has 22.5 radials .I can be driving down the road about 55mph and take it out of gear and let it coast down to 45mph and it will bounce . I have jacked up the truck and the only tire out of round is less than 1/8 ",it is the front,and very min side to side.Thanks for anyone's help!!!!
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