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post #1 of (permalink) Old 09-04-2003, 06:01 PM
MudDogYJ
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NP231 rebuild

So, Im on the highway, traveling 70mph when I hear this serious CLUNK in my drivetrain. As I venture on (Im fully loaded busting out of my soft top with gear going back to school), the sporadic clunk gets more and more frequent. The more torque required, the worse it gets. It is inconsistant, and violent. I checked all u-joints, driveshaft, etc, nothing visibly wrong. Im thinking theres slack in the chain, a chip in the gear teeth, or something else internal in the T-case. Could it be anything else before I bust into tearing it apart? Anyone else experienced/heard of this symptom?

Follow up question, whats it gonna take to replace the guts. It has a slip-yoke eliminator, and Im trying to figure if itd be easier to get a T-case from a yard, and just bolt on the eliminator. OR, just replace the innards. Any thoughts? I checked the thread posted a bit back, and LEVE had put up a link for the NP231 Dodge service manual, but its no longer working. Anyone know if that still exists?

I did make it to school, but it was at 45mph at times, and 55 tops, took me 7 hours for a 4 hour trip. I love this damn vehicle.

thanks for the input gents.

J
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post #2 of (permalink) Old 09-04-2003, 09:24 PM
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Re: NP231 rebuild

I would think if the innards are busted up pretty good, it'd be more cost effective to get a used one from a yard. I've got one with a SYE I'll sell you if you're interested.
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post #3 of (permalink) Old 09-05-2003, 10:02 AM
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Re: NP231 rebuild

The chain only turns when in 4wd, so I really doubt that's the problem.
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post #4 of (permalink) Old 09-05-2003, 10:45 AM
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Re: NP231 rebuild

Are you sure it's not something other than the T-case? busted tooth in Diff maybe?
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