Loose drive chain - JeepForum.com

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post #1 of 17 Old 06-23-2011, 09:27 AM Thread Starter
Neves7j7
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Loose drive chain

Hey, my 97 Laredo had just started making a noise that I've pin pointed to be a loose drive chain in my t-case. Anyone have any experience with this? How hard is it to replace and how long to I have until serious damage is done? Like I said. It just started to rub so it's not Mega loose.

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post #2 of 17 Old 06-23-2011, 09:52 AM
ajmorell
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Had it happen in my 98. I pulled the case myself, cost around 2 hours of labor to have a shop swap the chain out with a new one.
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post #3 of 17 Old 06-23-2011, 10:08 AM
Dodgeram1989
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All you need is a good pair of snap ring pliers to tear apart the tcase if you are thinking of doing it yourself

97 ZJ - Stock again
1976 Chief AMC 360 6 in lift, 35 inch tires

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post #4 of 17 Old 06-23-2011, 01:05 PM
ratmonkey
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do it QUICKLY or it will eat through your case. by the time you can hear it slapping the case you don't have long before it explodes on the highway.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #5 of 17 Old 06-23-2011, 03:14 PM
Candymancan
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How do you know a chain is lose other then inspecting it. Like what kinda noises does it make ? Just curious
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post #6 of 17 Old 06-23-2011, 03:22 PM
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It makes a ratcheting sound under load, no sound under coast
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post #7 of 17 Old 06-23-2011, 03:25 PM
Candymancan
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Oh yea ?

What would cause the Jeep to snap/pop/clunk whatever you want to call it underneeth when driving at slow speeds 10mph and under then releasing the gas pedal as its about to shift into 2nd ? Both my 5.9 and our 4.0 do this, and so do other ZJ's i've driven..

The 4.0 has done it since we got it used with 20k miles over 11 years ago... this must be some kinda ZJ thing.. I always wondered if it was the transfercase snapping back due to the transmission not being allowed to shift because you let off the gas too soon at those slow 10mph and under speeds. Altho sometimes it does it when your rolling at those speeds too, right as the transmission shifts itll clunk underneeth, like there is some play in something and its snapping due to tightening back up.. Its so wierd, i know it isnt u-joint related
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post #8 of 17 Old 06-23-2011, 04:21 PM
ajmorell
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Not sure I understand the circumstances you're describing. Basically when it went bad for me under load it would make a ratcheting sound. The heavier the load the worse it got, speed didn't seem to matter. It didn't make any noise at all when no load was applied to it.
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post #9 of 17 Old 06-24-2011, 08:30 AM Thread Starter
Neves7j7
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It sounds just like a peddle bike when the chain drags on the chain guard. So the only thing in there that would make sense is the drive chain... Unless anyone has other ideas. But it makes the same noise under throttle or coast. And it's a pinch louder in 4x4. I recently bent my cross member on a rock, doesn't seem to have effected the tranny mount. Could I have knocked the sprockets out of line? I'm not a pro, just trying to use common sense/ good judgement to diagnose this.
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post #10 of 17 Old 06-24-2011, 10:15 AM
ratmonkey
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no, the case would explode spectacularly before the cogs came out of alignment.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #11 of 17 Old 06-24-2011, 04:45 PM Thread Starter
Neves7j7
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So replacing the chain asap seems to be my only non explosive option. Lol.
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post #12 of 17 Old 06-24-2011, 04:48 PM Thread Starter
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The part is for a 242 t-case. Mine is a 242 J. Is this comparable?
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post #13 of 17 Old 06-24-2011, 05:27 PM
Ensiferum
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I did mine myself, no need to remove T-Case from vehicle.

I used this:

http://www.mallcrawlin.com/forum/sho...n-of-the-NV242

and this:

http://go.jeep-xj.info/HowtoChainChange.htm

Easy and straightforward. Just get a good pair of lock ring & snap ring pliers.
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post #14 of 17 Old 06-24-2011, 05:40 PM
Dodgeram1989
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I would pull it. Change the seals and bearings why you r in there

97 ZJ - Stock again
1976 Chief AMC 360 6 in lift, 35 inch tires

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post #15 of 17 Old 06-27-2011, 11:20 AM
MuddSlutt
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Quote:
Originally Posted by Candymancan View Post
Oh yea ?

What would cause the Jeep to snap/pop/clunk
rice crispys in your t case lol

01 WJ 4.0 ((New Toy))
98 ZJ 5.9 Limited ((SOLD))
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