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Old September 13th, 2013, 07:41 PM   #1
blades012
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Default Help with transfer case

Hopefully you all can help.

I have a 1997 Jeep TJ 4.0 auto. No lift of any type, Jeep is completely stock.

I bought it about a week ago for pretty cheap as a fixer upper. It has been making noise that sounded to me like a drive shaft (u-joints).

I had to take it to a local shop to have the rusted rear brake lines replaced.

Anyway, today I was tinkering with it and the shop said that the rear drive shaft has a kink or something in it. I read that I could remove it and drive in 4HI so I did.

I drove maybe a half mile in 4HI and the rattle metal clank noise continued. Then the Jeep felt like it went into Neutral. The Jeep worked in 4Low to get me home but would not go back into 4HI.

Is there a chance my transfer case is shot? I am thinking that the noise is coming form the Tcase but not sure. How do I check?
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Old September 13th, 2013, 09:13 PM   #2
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I would drain the fluid and see what comes out and see what color the fluid is first
Maybe even stick a magnet in the to see if you get any chunks
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Old September 13th, 2013, 09:37 PM   #3
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Thanks, I will look tomorrow
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Old September 13th, 2013, 10:44 PM   #4
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Um if you drove it without the rear drive shaft, you already drained the fluid and probably killed it. The rear shaft seals in the fluid, I wouldnt go to that shop again. Get a new shaft, fill the case and see how it is. Dont drive it anywhere until then
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Old September 13th, 2013, 11:21 PM   #5
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Umm from numerous places it says its ok on 97+ Jeeps. I hope they all weren't wrong.
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Old September 14th, 2013, 01:51 AM   #6
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Not if it has a slip yoke rear.
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Old September 14th, 2013, 02:43 AM   #7
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Quote:
Originally Posted by blades012 View Post
Umm from numerous places it says its ok on 97+ Jeeps. I hope they all weren't wrong.
They were.
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Old September 14th, 2013, 05:24 AM   #8
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I guess I can't see where it would leak fluid from when the drive shaft just slide over the output shaft on the transfer case. Not trying to argue but there is nothing to seal fluid in.
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Old September 14th, 2013, 05:57 AM   #9
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If you know all this, then why bother asking?



Or, take a better look. The driveshaft slipyoke does slide over the output shaft of the transfer case. The slipyoke is called that because it slips in and out of the t-case on that output shaft to allow for suspension movement. When the driveshaft is removed, there is nothing supporting the back of the output shaft and there is a large open hole for fluid to escape.

The exception is if an aftermarket slip yoke eliminator was installed, in which case the driveshaft will bolt onto the yoke at the back of the t-case and not slip onto the output shaft.
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Old September 14th, 2013, 06:26 AM   #10
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My 98 XJ will Not leak any fluid with the rear drive shaft out.
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Old September 14th, 2013, 06:33 AM   #11
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There is two styles of output shaft on the 231
The old school one slips inside the rear housing and the newer style has a shaft that sticks out of the rear of the transfer case that the slip yolk slides over
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Old September 14th, 2013, 09:57 AM   #12
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Quote:
Originally Posted by Wramblerguy View Post
There is two styles of output shaft on the 231
The old school one slips inside the rear housing and the newer style has a shaft that sticks out of the rear of the transfer case that the slip yolk slides over
97 has the old style just like all xjs (231 and 242). If you pull the shaft and fluid doesnt leak out, it is because it is low on fluid. I bet his seal was bad and fluid was low and nothing drained when the shaft was pulled but the little left flowed out while driving. That also explains it getting worse. Not having fluid is about the only way to kill a 231 with a stock jeep in normal conditions.

Look up a parts diagram for a 231...
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Old September 14th, 2013, 10:10 AM   #13
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Quote:
Originally Posted by Gunsworth View Post
97 has the old style just like all xjs (231 and 242). If you pull the shaft and fluid doesnt leak out, it is because it is low on fluid. I bet his seal was bad and fluid was low and nothing drained when the shaft was pulled but the little left flowed out while driving. That also explains it getting worse. Not having fluid is about the only way to kill a 231 with a stock jeep in normal conditions.

Look up a parts diagram for a 231...
All xjs?
It's weird because I have seen xjs with that style output
And I don't need to look up a tarts diagram
I have been inside many 231/242/249s
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Old September 14th, 2013, 10:35 AM   #14
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Quote:
Originally Posted by Wramblerguy View Post
All xjs?
It's weird because I have seen xjs with that style output
And I don't need to look up a tarts diagram
I have been inside many 231/242/249s
I could be wrong on the xjs but the 00 and 01 xjs ive personally worked with both had the old style so I assumed they all did. But we are talking about 13 to 17 year old vehicles so theres alot that couod have been swapped. I dont know the exact factory breakdown, best bet for the op is to crawl under his jeep and see what he has. Either way it sounds like his case is toast
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Old September 14th, 2013, 01:30 PM   #15
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Quote:
Originally Posted by Gunsworth View Post
I could be wrong on the xjs but the 00 and 01 xjs ive personally worked with both had the old style so I assumed they all did. But we are talking about 13 to 17 year old vehicles so theres alot that couod have been swapped. I dont know the exact factory breakdown, best bet for the op is to crawl under his jeep and see what he has. Either way it sounds like his case is toast
mine is stock, has the newer style output shaft, i'll crawl under my g/f's 97 in a minute
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Old September 14th, 2013, 01:33 PM   #16
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Just checked g/f jeep is a stock 97. Has new style
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Old September 14th, 2013, 01:35 PM   #17
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Originally Posted by curbdog17 View Post
My 98 XJ will Not leak any fluid with the rear drive shaft out.
Nor will my '98 TJ.
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Old September 14th, 2013, 02:19 PM   #18
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They must have been running both styles then. My 97 had the open slip yoke. Ive also worked on a handfuk of newer TJs that had the open style too. Jeep has been known for using whatever parts are sitting sround though so its not surprising.
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Old September 14th, 2013, 02:23 PM   #19
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Well no shit, the 01 cherokee had a 242 so maybe those had old style, and our 00 must have a had an old style swaped in. Im curious now, gonna have to check that tag on it. I only though those new styles were on the last few years of the tj, guess I was wrong.

Guess ill go chew on my foot
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Old September 14th, 2013, 03:43 PM   #20
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Yes the new style 97 to 2001.. I work on jeeps for 20 years and a dealer and 231 t case never sealed with slip yoke
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