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I've done them, about 1-2 hours. Word of advice if it's just dripping don't mess with it. The first one I did leaked worse after than it did before.
 

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Ya, but easier said than done. Getting the pan from between the motor and the axle was the hard part..

But ya pull pan, remove last main cap...
 

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Ya, but easier said than done. Getting the pan from between the motor and the axle was the hard part..

But ya pull pan, remove last main cap...
:D From what I have read about it the rear main is much easier said then done.
 

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One piece of advice use a dab of RTV on the bearing cap to create a seal between the top and bottom seal..Also make a wooden dowel to push the old upper seal out and the new in..Also get the best seal you can don't skimp...also make sure to use the proper torque on the rear cap... Like nick said don't bother till it's leaking like crap..drips are not worth it..The design of these rear mains are crappy, newer jeeps have been moved to a 1 piece design which seals much much better.
 

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Rear Main isn't horribly bad.

Raise Jeep off ground pull wheels and support so the axle can droop. Pull you track bar bolt also so it isnt in the way.

Remove starter... Don't have to but makes it a lil easier.

Then start pulling the quadrillion bolts. the front has a couple of odd sizes as well as the rear two.

Once all the bolts are out you have the tough job of prying the pan off. Mine took about 2 hours just to drop the pan but it is 21 years old. Once the pan pops loose you will have a buge mess make sure you put some diapers down it will drip for days. Also the old gasket is a real PIA to remove that took me about 3-4 hours of scraping. I poured some diesel through to help work it out and seafoamed right before draining the oil.

Two bearing cap bolts are tight but no real problem there.

The seal is easy but i Rec buying two of them since you will more than likley mess up the first one trying to figure out the best way to put it back in.

Grease it good put it in slap the bearing cap back on . Fight with getting the seal to stick back up there while putting the pan in place.

I have read if you got time to RTV just the gasket up and pop the bolts in to hold in place then let it try over night then in the morning pull the bolts out and install the pan.

All in all prolly 10 hours of labor on my old waggie. I still got one more to do and dreading it.
 

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On lifted XJ's, removing the pan is much easier than on stock XJ's...all the above is good advise. Good luck...just one more thing...try and get yourself a 1 piece rubber oil pan gasket when you do the process.
 
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