Vibration

I have a 2000 Pete and have a vibration at higher rpm and worsens under load. The lower the gear, the stepper the hill the harder the truck is working the worse the vibration... I was in 4th at 15 hundred rpm and the steering wheel was going crazy.. I let up on throttle and rpm dropped to 12 hundred and I hammered down and vibration did not come back... Any ideas on where to start checking.. This is a new truck to me so not sure when or what happened before me... Any help would be great!

Paul

 

I did change the damper and to me it does feel like its in the drive line. It has a slight vibration when i get around 60 mph and again the rpm is close to 15 hundred.. I also feel it when going up threw the gears at higher rpm but that is only if Im in the throttle heavy.. It just seems the heaver under the load the worse it gets... Hope this helps...

Also it's a Cat 3406E

Thanks for the quick response...

Paul

 

Thanks guys... I just climbed under it and the carrier bearing has spun and the driveshaft is actually out of center buy at least 3/16 to one side... You think this is the culprit?

 

Thanks for the help guys.. First day in forum... Really liking here too!!