Clicking in rear
 

So over the past week a few things were done to the jeep and now I have the very loud and violent clicking/banging noise from the rear. Here is a list of changes:

New pinion seal
New u-joint at the yoke
Factory gas tank skid
New gear oil

I do have a lock-rite locker in the rear and I am familiar with the ratcheting noise it makes but this is nothing like this. It only occurs when I'm taking off from a stop. I had the rear diff cover off about 3 weeks ago and the gears looked good. No wear, chipping, or broken teeth. The locker looked to be in good condition as well. So, now I'm stuck with ideas of where the noise is coming from. It clicking is so violent I can actually feel it in the floor. If anyone has had any similar problems or have any ideas of what to check or look for, I'm all ears.

Thanks,
Adam

transfer case mount.. lift up the t case with a pry bar and see how far it moves it shouldnt move too much

Sounds like you got a bad u-joint or it isn't tight. Also check your u-bolts on the axle to make sure they are tight.

Does the locker need any oil additive in it to function properly?

Locker doesn't need any additives. The u-joint worked just fine when I put it in and there wasn't any noise on the initial test run but ill pull the drive shaft and see if there is any binding. I'll also check the tc mount. That makes some sense because I had horrible vibes for about a week due to a worn u-joint and when one thing is worn it wears others. Will check all in the morning and let yall know what I find. In the mean time, any more ideas are greatly appreciated. Thanks to the ones who have already posted.

Adam

Check the other u-joints in the shaft. If one was bad the other/others prob are as well.

I've checked it over and over. I did find that my tail pipe is rubbing the gas tank skid and I believe that when I accelerate it is bouncing off the skid and this is giving my the noise and the feeling I get in the floor board.