It would be fairly easy to do if you could put it on a lift. Remove the vacume line connector, put a deep socket of the correct size on it amd remove it, then reverse to replace. Just make sure you clean the area well so you don't get any dirt or debris into the T case.
Now I have to ask why? Are you not getting the front alxe to lock?
I just replaced the one on the axle but only have vacuum on one side so i turned the connector around to disengage. The lines look good so the switch was the next thing and @ 10.00 bucks i thought why not
Your Jeep is only 4 years newer than mine but it would not be uncommon for the lines to fail. Check out the top of the YJ forum in the stickey posts for a lot of info on how to bypass the vacume system, you can do it a lot of different ways.
Me, I put the posi lock system on mine and it works great, but I had to do something like that since my vacume lines went up in smoke! Long story!
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