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Unread 10-01-2009, 07:02 AM   #1
whitie_08
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rear end going out?

well this isnt exactly regarding my yj, but it is my brother's zj. yes i could go to that forum but it should be the same concept, yj or zj with a d35.

what are some characteristics of a bad rearend?

what if it came with a factory limited slip? would it act up if it were wearing out, or just silently turn in to an open diff?

ive never experienced it so i dont know what it would do, and we are trying to figure out a "clunk" that has happened a couple of times, and seems to be coming from the back side of his jeep.

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Unread 10-01-2009, 07:10 AM   #2
theducksguts
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I don't have a YJ but it is the same end, and the same concept. A worn Trak-Lock would just simply be open. It uses clutches and if the clutches aren't working it will just run open.

Clunking, grinding, metal on metal sounds, heat. All signs that something is wrong. It doesn't take much to open it up and take a look. Just some new gear oil and some rtv. Put it up on jack stands and chuck the front wheels. Rotate the axle. If the other side rotates the same direction the Limited slip will engage, if it rotates opposite, then it is worn out. You can also inspect the ring gear. It has been a while but I believe Trak-Lock still has spider gears as well.

Pull the cover and take a look.
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Unread 10-01-2009, 07:10 AM   #3
zdox11
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i would pull the diff cover and inspect the gears. also make sure the braces that keep the diff in are tight and at the recommended torque. you can spin the tires and look for alignment issues with the pinion and the ring.
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Unread 10-01-2009, 08:39 AM   #4
Louie4
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Take off the driveshaft at the pinion yoke and spin it by hand, check for play and spin the tires some. If you feel any kinks I would pull the diff cover.
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Unread 10-01-2009, 08:47 AM   #5
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Check your trackbar bushings if you still have one .
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Unread 10-01-2009, 09:55 AM   #6
whitie_08
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will do it saturday morning
thanks guys.

luckily he doesnt have to drive it that much right now, so it will gice us time to check things out.
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