Remove the shackle-spring bolt first (same as with the front), and now the fun begins!
Jeep engineers had to be having a laugh when they designed the shackle-frame bolt to go in the way it does. Because (at first sight) you have to drop the gas tank just to get the bolt out. Just to get one damned bolt out!! Yup, if you try to pull it straight out it comes into contact with the fuel tank before it comes out enough to clear the bushing/sleeve in the frame.
Well, alot of people throughout the years just broke out their favorite cutoff tool and made quick work of that bolt, others actually went through the process of dropping the tank to do it - which can sometimes be a good thing because this allows you to replace the fuel pump, sending unit, sock filter, or anything else you might have been putting off because you didn't feel like dropping the tank. But there is another way!
Yup, that's right, another way - that takes a little time, patience, and... did I mention time?
Here's how to get those top bolts out.
First, take the nut off the bolt!
Now, force the bolt out as far as you can. You'll probably need to use a punch and hammer to push it through because it might be pretty tight. A screwdriver will work in lieu of a punch.
Now that the bolt is pushed through as far as it can go, get some needle-nosed pliers and a small flat head screwdriver and try to get that sleeve out of there. This is the part that takes some time, but after you do the first one, doing the other side of the Jeep is a snap because you already know the tricks needed to do it. I have done this so many times for other people that I made a special tool to do it. It's an oversized threaded rod that I force into the sleeve, then I heat it up and just pull the sucker out. Heating the rob causes it to swell a bit and since I had to force it in there it is tight already. Add that to threading on the rod and it makes for some nice grippers... anyhow.
Where were we? Oh yeah! Now that you have the sleeve out, pup that half of the bushing out. In case you didn't know, the bushing is a 2 piece, now that I've told you that you are probably slapping your forehead right now going, "duh!" Once you get that half of the bushing popped out you are on the home stretch.
You will notice how the bolt has some wiggle room now, a whole lot in fact. If you're lucky you should be able to force the bolt down and out. If you're having too much trouble doing that, try pushing the bushing that is still in there out an inch or two by inserting a screwdriver in the other end of the tube where you just pulled the first half of the bushing out. Once you get a little bit of the remaining bushing out it allows for the bolt to smush the rubber more and gain an even steeper angle to pull it down and out.