NP231 problems... - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-18-2001, 09:50 PM
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NP231 problems...


After a good weekend in Moab, my XJ NP231 will shift into 4WD normally, but takes a long time to come back out and comes out with a jolt. Does anyone have any suggestions on this?

Ron Boyd
Software Engineer
Evans & Sutherland Computer Corporation
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post #2 of (permalink) Old 01-18-2001, 11:46 PM
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Re: NP231 problems...

i'd check the fluid level and the linkage for any binding/excessive play/misadjustment first. Its cheap, and easy to do, a good place to start.

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(Will trade functioning organs for CJ-7 or flatfender)
post #3 of (permalink) Old 01-19-2001, 09:48 AM
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Re: NP231 problems...


I checked the fluid, and there's plenty of it. It's a little dirty so I'm going to change it tomorrow. I fiddled with the linkage some thinking that it might gotten out of place, but the problem persists. I figure I'll spend quit a bit of time on it tomorrow. Any other suggestions are very welcome.

Ron Boyd
Software Engineer
Evans & Sutherland Computer Corporation
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post #4 of (permalink) Old 01-19-2001, 06:29 PM
 
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Re: NP231 problems...

Back the jeep up about 15 ft after shifting out of 4wd, so that the front unlocks completely.
big ed

[img]/wwwthreads_images/icons/cool.gif[/img] Big Ed
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post #5 of (permalink) Old 01-22-2001, 03:06 PM
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Re: NP231 problems...


I've got a '99, so there is no axle disconnect. The service manager and the dealership that I bought it from said that it is a completely mechanical system and works entirely in the transfer case.

Ron Boyd
Software Engineer
Evans & Sutherland Computer Corporation
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