Rear end swap

Jrcm10

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Hello everyone. New member here. I just recently bought a 2006 liberty 4wd 3.7 at a auction lien sale. As I was driving it home the jeeps rear end started pulling side to side and all of a sudden the driveshaft broke off the differential and the differential housing is broken more like grenaded. I was able to limp home on the front driveshaft thankfully with a alot of clanking from the rear differential. I didn't buy it for to much less than 1k and it's pretty clean with 135k miles. My question is has anyone Swapped the rear differential or rear end completely? Just wanted to see what I'm getting myself into. Rear ends are pretty cheap so I want to fix it and learn something from it lol. Any help will be appreciated
 

04Liberty

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First, get your factory manuals: https://www.jeepkj.com/threads/factory-service-and-parts-manuals.58752/
Dropping a rear axle is pretty straightforward, especially a coil sprung one. Sounds like you're gonna need an axle and a rear driveshaft (I wouldn't trust the original after that). Better make sure your t-case didn't get messed up too. Just make absolutely sure you get one with the same ratio as your front (this is non-negotiable) and is compatible with your onboard electronics (sensor locations can vary).
 

Jrcm10

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Thanks for the link. That'll be super helpful! Gear ratio should be 3.73 right? It's an automatic. I inspected the t-case and surprisingly looks solid. Also upon further inspection of the rear end both brake lines were cut. Probably explains why brakes didn't work well. Got my work cut out for me lol.
 

tommudd

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Yes if 3.7 and automatic its a 3.73
Easy to swap rear diffs , have done a bunch of them
I hang the calipers , remove brake lines from diff but do not detach them either
shocks , let them hang
speedo pickup on 02-05s
rear tri link, I unbolt bracket and all
lower control arms and of course driveshaft1/2 hour or so for me any more
But for yours ( after 05 too many electronic geegoozs ) so watch all wires
 

Jrcm10

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Hey guys so I thought you guys would like to see what happens when the differential grenaded. Taking the whole rear end was pretty easy after I disconnected all the wires. Brake lines were cut so I didn't have to worry about that. I do need to replace a parking brake cable on the driver's side because it was cut before the hook thing that clips on to the spindle I think. Ordered a used rear end from automotix for 300 bucks shipped so ill update more after I start putting it back on.
 

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JeepJeepster

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Thats an odd situation there. Since there is a C-clip laying there and you say the rear end went side to side, I'm thinking something happened to an axle shaft. There is also a bearing roller laying there. I'd say something got sucked between the pinion and ring gear.
 

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