The full doors are very heavy. What you may need to do, if this is your first time taking them off, is first remove the retaining strap and then using a socket, remove the nuts off the bottom of the door bolts. Now, get a floor jack, a towel and a large block or wood or a cinder block.
Something large for the jack to sit up on so it can reach the bottom of your Jeep's door better. Now place the towel on top of the jack so it doesn't scratch your paint. Put the jack on top of the wood or block and slowly raise the jack to the bottom of the door.
Once it touches, slowly raise the jack more and watch the door bolts. The moment you see them start to slide out of the hindge, have someone strong grab the door and stabilize it, unless you can do it yourself. The doors are heavy, so be careful and get help with this if you think you may need it.
And make sure you get the mirror windshield adapters so you're fully road legal. More.
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