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Unread 11-19-2012, 05:18 AM   #16
alc60560
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1992 YJ Wrangler 
 
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If it was me, I would pop the cover and check the rear (as said hopefully just spiders). There is also a very high chance the main shaft in the t-case is broken. This has happened to me. It is not difficult at all to open it up and inspect. Good luck.

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Unread 11-19-2012, 05:53 AM   #17
Rproject
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Quote:
Originally Posted by Anticanman View Post
And the staples are out. I had stacks of papers that needed them more.
Leave it to Anticanman.
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Unread 11-19-2012, 08:54 AM   #18
vadslram
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If you could drive it in 4wd without thumping and grinding I would suspect the transfer case. If you detonated the rear or parted a U joint you would know it every time you rolled.
Simple check would be the transfer case linkage, that pop could have been it slipping into transfer case neutral or between 4wH and 2wH. try to get it into 2wH jamming it way up. If the linkage is slipped it could be not going all the way in to gear.
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Unread 11-19-2012, 11:04 AM   #19
Apollo12227
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For it to be the transfercase the main shaft would have had to have broken on the rear axle side (back) behind the chain. If he was able to drive in 4wd then the main shaft and drive train are intact to the point he can achieve power to the front driveshaft. So his transfercase main shaft is broken behind the chain or his diff is toast. My money is on the diff or axle shaft(s).
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Unread 11-19-2012, 11:22 AM   #20
Jorgenjeep
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so rear shaft spins with engine running in neutral and when in gear a lot faster! so this would be the rear end then?
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Unread 11-19-2012, 11:28 AM   #21
Apollo12227
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Quote:
Originally Posted by Jorgenjeep View Post
so rear shaft spins with engine running in neutral and when in gear a lot faster! so this would be the rear end then?
Yes.

Either you broke an axle shaft causing all power in the open diff to go to the side with the broken shaft.

Or

You broke your spider gears or stripped the pinion or ring gear.

If it is your axle shaft you must not have c-clips as you tire didn't walk out with half an axle shaft attached to it. I'm not certain offhand if YJs ever came with non c-clip rear axles...
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Unread 11-19-2012, 11:41 AM   #22
Jorgenjeep
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thanks any quick tips to check i did notice that u joints where in tack and pardon the ignorance but the axle shaft is after the transfer case correct where and what can i take off/down to inspect thanks in advance
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Unread 11-19-2012, 11:57 AM   #23
vadslram
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So you are saying that sitting still the rear drive shaft can still spin?
Then you must have snapped the pinion shaft, snapped an axle or somehow stripped every tooth off ot the ring or pinion (pretty unlikely). No matter what condition your transfer case is in the drive shaft shouldn't turn without moving the wheels.
Try jacking up the whole rear end with the transfer case in 4 L and the engine off. Then try to spin each wheel by hand while looking at the other and the drive shaft yoke. In 4L the mechanical advantage won't let you turn the shaft at all, If an axle is broken you should feel some grinding and little resistance with the other wheel not/barely moving. Even with an open differential if the rear is in good shape both wheels will move when you spin one, with a locker/LS they will turn in the same direction, in an open diff they will spin in opposite directions.

You need more diagnosis to see what it's going to cost.
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Unread 11-19-2012, 12:45 PM   #24
stenyeart
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Time for an 8.8 swap.
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Unread 11-19-2012, 02:13 PM   #25
hdfxrs91
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Quote:
Originally Posted by Apollo12227 View Post
Yes.

If it is your axle shaft you must not have c-clips as you tire didn't walk out with half an axle shaft attached to it. I'm not certain offhand if YJs ever came with non c-clip rear axles...
Up through mid-90, I believe. Since his a 1990, it's possible he might have either one.
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