Ok. So I've had these issues for a while.
I have a 99 XJ NP242.
I replaced the front output bearings due to a very slight up and down movement. There was a bad vibration above 65mph with the 3.55s and 30s.
I noticed that the vibration was gone immediately folliwng the bearing replacement, however it returns soon after about 100 miles.
Now that I have 5.13 gears, the vibration is very noticeable after 55 mph and very intense at 70+mph.
I KNOW that something with the transfer case is messed up because the driveshaft has been replaced, and then sent to a shop, where it was balanced and trued. The front gears were replaced by a skilled shop here in Phoenix.
How can I fix this problem? It seems that even a very very small amount of play in the front output yoke on the transfer case will cause huge vibrations at highway speed. I've resorted to removing the front shaft altogether for the time being.
I've read other threads that suggest replacing the front output shaft due to excess wear where the bearing seats. I can't find a part number for that shaft. It is shown in quadtrac's breakdown of the NP242 but there is no part number.
Has anyone else had this problem? What did you do to fix it?
Thanks!
I have a 99 XJ NP242.
I replaced the front output bearings due to a very slight up and down movement. There was a bad vibration above 65mph with the 3.55s and 30s.
I noticed that the vibration was gone immediately folliwng the bearing replacement, however it returns soon after about 100 miles.
Now that I have 5.13 gears, the vibration is very noticeable after 55 mph and very intense at 70+mph.
I KNOW that something with the transfer case is messed up because the driveshaft has been replaced, and then sent to a shop, where it was balanced and trued. The front gears were replaced by a skilled shop here in Phoenix.
How can I fix this problem? It seems that even a very very small amount of play in the front output yoke on the transfer case will cause huge vibrations at highway speed. I've resorted to removing the front shaft altogether for the time being.
I've read other threads that suggest replacing the front output shaft due to excess wear where the bearing seats. I can't find a part number for that shaft. It is shown in quadtrac's breakdown of the NP242 but there is no part number.
Has anyone else had this problem? What did you do to fix it?
Thanks!