Rebuild NP231 - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 03-14-2005, 05:10 PM Thread Starter
MNT
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Rebuild NP231

I am in the process of cleaning the junk out of my garage and one of the pieces is my old NP231, with SYE. It is broken, seems to only work in 2WD, there is a "plate" inside that looks like it had 4 tabs sticking out, the tabs are broken off. I couldn't find anything else that looked broken.

My questions are, does anyone know what this "plate" is and, how can I check the case to make sure it is working in 2WD and 4WD hi and lo short of putting it back in the jeep?

The goal is to make it work, and sell it with the AX15 when that comes out soon.

TIA
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post #2 of (permalink) Old 03-14-2005, 05:51 PM
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Re: Rebuild NP231

sounds like the shifter plate to me. Get a 4 wheel parts hardware catalog and look at the diagrams. That will give you an Idea of what the parts are called. Bet the ears are broke off of the shifter plate, but just a guess without having it here to look at.
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post #3 of (permalink) Old 03-14-2005, 06:01 PM
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Re: Rebuild NP231

I have an FSM for the NP231, if you want it send me an email and I'll email it to you tonight.
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post #4 of (permalink) Old 03-14-2005, 06:34 PM Thread Starter
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Re: Rebuild NP231

Duh, why didn't I think of that. I read those catalogs everytime they caome, and they always hae that section, never even thought of it. Thanks for the idea.

Any idea how to check to see if the case is working without installing it. Just put it in gear and try to turn the shafts?
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post #5 of (permalink) Old 03-15-2005, 08:12 AM
 
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Re: Rebuild NP231

[ QUOTE ]
Any idea how to check to see if the case is working without installing it. Just put it in gear and try to turn the shafts?

[/ QUOTE ]

Just put it in gear and turn the shafts,, sounds like a plan to me [img]images/graemlins/thumbsup.gif[/img]
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post #6 of (permalink) Old 03-15-2005, 09:29 AM
 
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Re: Rebuild NP231

Lets see,
A plate with 4 tabs, some are broken,
Sounds like the oil pump,
Somebody installed the pump on the wrong side of the case,
I,ve seen it before,
Broken tabs and won't go into 4wd,
An easy fix, just need a new pump,
Do yourself a favor,
Get a service manual,
It will help you so much, and you'll get more accurate responses if we know what part your talking about,

CTjeepnut
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post #7 of (permalink) Old 03-15-2005, 10:09 AM Thread Starter
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Re: Rebuild NP231

Thanks everybody for the replies. I'll disassemble this weekend and try to get it back into good shape.

Thanks again for the help.
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