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So I bought this 2001 XJ about a year and a half ago. It had 3" blocks in the back and springs up front,,,,, and a nasty vibration.
This past summer I installed a all new lift. 3" Zone offroad all spring kit. New leafs, new coils, new shocks, track bar and steering damper. Oh, and new shackles too because those were smoked. (Did I mention I live in michigan and all this stuff was original? Yeah buddy, good times getting all those original 20 year old bolts out. lol) Also put new 31" General Grabber AT's on it.
Jeep drives and handles great except for this vibration. It starts in just over 30 mph. I need to say I just installed a advance adapters SYE kit and a Adams Driveshafts double Cardan shaft and it has a 1" drop on the t-case also. I dropped the rear factory driveshaft out and the vibration went away hence the SYE kit and double cardan shaft. (it was a whole kit from adams driveshafts)
At this point I'm really wondering about the pinion bearing. It does seem that I can get a bit of movement out of the pinion yoke. (should have looked at that when I pulled stock driveshaft out and test drove it) Has anyone ever encountered anything like this? This is driving me nuts. Thanks in advance.
You can remove the transfer case drop now. You’ll need to shim to get the pinion angle up. Post a couple pics of the pinion angle and drive shaft. There’s a ton of threads on this to. I would get the pinion angle right before I looked any deeper for causes.
Sometimes a visual reference helps. Haven't seen one like this before. To answer your question no, I haven't shimmed the axle. Right now mine looks like the bottom diagram. My next step today was going to be check my driveshaft angle I have my t-case and diff angle measurements wrote down out in the garage. Thanks for the reply.
You can remove the transfer case drop now. You’ll need to shim to get the pinion angle up. Post a couple pics of the pinion angle and drive shaft. There’s a ton of threads on this to. I would get the pinion angle right before I looked any deeper for causes.
I was wondering about pinion angle too. I have the pinion and t-case angles wrote down out in the garage but going off the diagram in the response above yours, yeahhhhhh, looks like I need to shim. I'll get a couple of pics today though. I tried looking for threads on this subject but apparently I didn't word it right. Thanks for your response.
hey y'all. sorry to jump in but got a question. I have a 1990 Cherokee 4x4 auto. last week it started vibrating pretty bad at about 40 mph. ( not death wobble ) I've taken out all the bolts to get the shaft off but it won't come out of the t-case. The steering wheel shakes. Anyway, I checked the u-joints in my front shaft and they were pretty much gone. my jeep has full time 4wd so I probably have a 242 transfer case. Is it true that I need to put her in full 4wd to get the drive shaft out? I just read that in here somewhere but haven't tried it yet. Any advice would be appreciated. Thanks.
I've taken out all the bolts to get the shaft off but it won't come out of the t-case.
Is it true that I need to put her in full 4wd to get the drive shaft out?
Which driveshaft are trying to remove? The front driveshaft?
No, the transfer case does not have to be in 4wd to pull a driveshaft. All you have to do is pry the U-Joints away from the yokes. The front driveshaft has a slip shaft so it can compress when you pry the U-Joints from the yokes. For the rear, make sure that the Jeep isn't going to roll away when you pry out the driveshaft. Chock the tires and pull the E-Brake. Pry the rear U-Joint from the yoke and pull the driveshaft from the slip yoke.
Driveline vibration
