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Unread 01-23-2013, 10:41 PM   #1471
ghatid
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So I am waiting to find a 242 shift tab, but my Jeep still makes a noise that I'm guessing is coming from the tcase, though I can't be sure.

The car makes no obviously bad noises until I reach 35mph, then there's a vibration noise that sounds speed dependent that doesn't go away again until I get all the way down to ~2mph or if I put the car in Neutral. Does anyone know what that could be? I removed my from drive shaft as per someone else's suggestion, but it didn't help.

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Unread 01-24-2013, 01:26 PM   #1472
ejschultz
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Quote:
Originally Posted by Jeeples View Post
Yeah, I made sure the shaft spun when turning the driveshaft yoke before I loaded it up lol. Also moved the shift selector to make sure nothing was bound up.

Awesome, looks like I'll freshen up the seals and toss 'er in this weekend.

Even better was I spotted it just laying on the ground next to the donor vehicle when I was there this past weekend. No getting dirty for this guy!
Ha. I got mine the same way when I picked up my 242. I have yet to do the swap yet. It's been sitting in my garage for a year now...
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Unread 01-24-2013, 07:21 PM   #1473
Jeeples
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Ok, so I was getting my 242 cleaned up and ready for new seals before swapping it in this weekend. I noticed something that kind of concerns me, I can turn the two driveshaft outputs independent of each other, regardless of shift selector position. I can turn either output individually and it will spin the other one, albeit very slowly.

Is this normal?
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Unread 01-24-2013, 07:46 PM   #1474
comptiger5000
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If it's in 2wd, 4FT or Neutral (positions 1, 3, 4), that's normal. In 4PT or 4LO (positions 2, 5), they should be locked together.
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Unread 01-24-2013, 09:30 PM   #1475
ghatid
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Okay, so I tried figuring out where the sound is coming from exactly, so I put it on 2wd, jacked it up, and had someone run it while I took a video.

The sound is definitely coming from the transfer case.


Any idea what it is?
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Unread 01-24-2013, 10:03 PM   #1476
Jeeples
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Originally Posted by comptiger5000 View Post
If it's in 2wd, 4FT or Neutral (positions 1, 3, 4), that's normal. In 4PT or 4LO (positions 2, 5), they should be locked together.
Hmmm...ok, I'll have to verify each position again tomorrow.

I assume is the shift tab is all the way towards the front of the t-case that would be 4Lo?
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Unread 01-24-2013, 10:06 PM   #1477
comptiger5000
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I think all the way forward is 2wd, I'm not sure though.
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Unread 01-25-2013, 01:02 AM   #1478
ghatid
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Originally Posted by Jeeples View Post
Hmmm...ok, I'll have to verify each position again tomorrow.

I assume is the shift tab is all the way towards the front of the t-case that would be 4Lo?
I think if you start at the most CW position, that's 4Lo, then N, 4FT, 4PT, and 2wd is the most CCW position. Not quite sure what you mean towards the front.
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Unread 01-25-2013, 05:49 AM   #1479
ratmonkey
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Quote:
Originally Posted by ghatid View Post
Okay, so I tried figuring out where the sound is coming from exactly, so I put it on 2wd, jacked it up, and had someone run it while I took a video.

The sound is definitely coming from the transfer case.

http://www.youtube.com/watch?v=U7qTxDuj7z8

Any idea what it is?
Sounds like really bad bearings, no fluid, or a bad planetary set.

I'm on my phone and its inconvenient to look back while typing a post. What year case is that? Input swap?

Edit: looking back, you've got a bad case and it needs the rest of the rebuild. Chain, bearings, seals, etc. Verify year by the tag.
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Unread 01-25-2013, 06:25 AM   #1480
Jeeples
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Not quite sure what you mean towards the front.
I was referring to the front of the t-case as in the same side the front driveshaft attaches to. Thanks for clearing that up for me, I'll check it out today after work.
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Unread 01-25-2013, 06:44 AM   #1481
zarnold
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Quote:
Originally Posted by Jeeples

I was referring to the front of the t-case as in the same side the front driveshaft attaches to. Thanks for clearing that up for me, I'll check it out today after work.
That is correct. 2wd is the first position towards the front, 4lo is the last position towards the back (closest to the case).
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Unread 01-25-2013, 10:31 AM   #1482
ghatid
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Quote:
Originally Posted by ratmonkey View Post
Sounds like really bad bearings, no fluid, or a bad planetary set.

I'm on my phone and its inconvenient to look back while typing a post. What year case is that? Input swap?

Edit: looking back, you've got a bad case and it needs the rest of the rebuild. Chain, bearings, seals, etc. Verify year by the tag.
Do you think it could be the planetary set? There was more play than I would expect when I took it apart, but it didn't seem like the gears were worn. Are they made with quite a bit of play?

I'm perfectly happy to do the rebuild, I just want to make sure it's not something like the planetary set or a worn gear that's catching up to itself. When I looked, there were no teeth missing or anything.

The tcase is a 97 242, I didn't need to switch inputs, but I did anyways since the 249 had a nicer one.
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Unread 01-25-2013, 02:51 PM   #1483
98GCLimited
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I have a quick question for you guys. I had been looking into 242s but I just found a 231 for a decent price that I could get.

I have a 98 4.0 42re and 249 stock. I have a .840" input on my 249 case.

The 231 is out of a 93-94 ZJ with 4.0 42re and the thread says .840" inputs on these cases as well and looks like it in the picture to me too.

If both cases are ISY and have the 23 spline .840" input would it be a direct swap into my ZJ? (Not requiring driveshaft shortening or input, front case half, and planetary gear swap.)

If the inputs are the same length and spline counts the same on both tcases, but turned out to be earlier gear cut would it even matter to me? Would I need to swap the inputs, front case and planetarys for length and spline counts? Or is there some other issue with the gear cuts I dont know about? Im under the impression you would only need to swap the front case half and planetarys when you need to swap the input over between cases with different gear cuts. Is this correct?

I know all these questions probably have been asked and answered in this thread already but I am looking for a quick answer from the knowledgable members here.

Thanks

edit: ok I found this but am confused on what the collar is this is referring to

"One other issue I've run into: 93-95 ZJ 231 and 242's with the .840 input have a metal collar pressed into the input shaft that mates to the bevel at the end of the transmission output shaft. 96+ transmissions do not have this bevel, meaning it is required to remove the input and either swap it, or you can easily take a deep well socket and tap the collar out along with the main shaft bearing. Reinstall the main shaft bearing into the input, making sure it is fully seated and that is the extent of the fix."
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Unread 01-25-2013, 03:41 PM   #1484
comptiger5000
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If the inputs are the same length, you shouldn't need to swap it.
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Unread 01-26-2013, 10:23 AM   #1485
98GCLimited
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Originally Posted by comptiger5000 View Post
If the inputs are the same length, you shouldn't need to swap it.
Thanks man I just went for it and bought it.

Worst case scenario I need to swap inputs, planetarys, and front case half and adjust rear driveshaft length but thinking it could possibly be a direct bolt in which would be sweet.
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