99 XJ T-case swap?

Hey guys,
I am in almost desperate need of some ideas here. I have a 1999 Jeep Cherokee
XJ 4WD 4 Door Sport 4.0. I know (now) I have NP232 Transfer case undernearth..
Sadly only because It blew. the problem is I can get my hands on a NP231 No
problem, the 232 however, is a LONG story.
Would this swap work? Would it bolt in or would I have problems?

Any help at all would be GREATLY appreciated.
If there are any other fixes out there please, I am all ears. The only thing
I cannot do is rebuild what's already there because of the giant hole that
was punched in it by one of the gears inside

Thanks again

You could try looking here,
http://www.novak-adapt.com/knowledge...se_gateway.htm may tell you
wat each will mate up to.

"greenxj" <u43105@uwe> wrote in message news:83158ea567b67@uwe...
> Hey guys,
> I am in almost desperate need of some ideas here. I have a 1999 Jeep
> Cherokee
> XJ 4WD 4 Door Sport 4.0. I know (now) I have NP232 Transfer case
> undernearth..
> Sadly only because It blew. the problem is I can get my hands on a NP231
> No
> problem, the 232 however, is a LONG story.
> Would this swap work? Would it bolt in or would I have problems?
>
> Any help at all would be GREATLY appreciated.
> If there are any other fixes out there please, I am all ears. The only
> thing
> I cannot do is rebuild what's already there because of the giant hole that
> was punched in it by one of the gears inside
>
> Thanks again
>

I did as much reading as I could, but unfortunately it doesn't have anything
on the 232... so I am really kind of in the same spot. I do thank you VERY
much for your input. As I said, any and all is welcome.

My thinking was kind of this way. If the AW4 tranny is in both, than wouldn't
it make sense that each t-case would bolt in relatively the same way?
Disregarding drive shafts and all... wouldn't that kind of make sense?


Greg wrote:
>You could try looking here,
>http://www.novak-adapt.com/knowledge...se_gateway.htm may tell you
>wat each will mate up to.
>
>> Hey guys,
>> I am in almost desperate need of some ideas here. I have a 1999 Jeep
>[quoted text clipped - 13 lines]
>>
>> Thanks again

I looked at going the other way when I swapped an AX15 in my 88 MJ and it
seems that there are a couple of PITA items that may bite you in your
process. These are from memory 5-6 years ago, so take them for what they
are worth.

1. I'm pretty sure that the np-232 is longer than the np-231 so you may have
to change the drive shaft(s).

2. The input shaft to the 231 had at least 2 different spline counts -
Murphy says you'll get the wrong one if you don't check just what you need
first.

3. If you decide to change the tc input shaft, they come with 2 different
bearing types and 2 different gear patterns, so you'll need to check what
you have before ordering the part.

I can't tell you for sure about the tranny-tc bolt pattern, but the AX15,
AX4, and AW4 auto all have adapters behind them so I'd bet on a common bolt
pattern.

greenxj wrote:

> I did as much reading as I could, but unfortunately it doesn't have
> anything on the 232... so I am really kind of in the same spot. I do thank
> you VERY much for your input. As I said, any and all is welcome.
>
> My thinking was kind of this way. If the AW4 tranny is in both, than
> wouldn't it make sense that each t-case would bolt in relatively the same
> way? Disregarding drive shafts and all... wouldn't that kind of make
> sense?
>
>
> Greg wrote:
>>You could try looking here,
>>http://www.novak-adapt.com/knowledge...se_gateway.htm may tell
>>you wat each will mate up to.
>>
>>> Hey guys,
>>> I am in almost desperate need of some ideas here. I have a 1999 Jeep
>>[quoted text clipped - 13 lines]
>>>
>>> Thanks again

--
Will Honea
** Posted from http://www.teranews.com **

Thanks a lot. I guess the only thing to do now is start counting and pray...
Sheeesh
Thanks for the fast replies guys, and the help. I really appreciate it

Will Honea wrote:
>I looked at going the other way when I swapped an AX15 in my 88 MJ and it
>seems that there are a couple of PITA items that may bite you in your
>process. These are from memory 5-6 years ago, so take them for what they
>are worth.
>
>1. I'm pretty sure that the np-232 is longer than the np-231 so you may have
>to change the drive shaft(s).
>
>2. The input shaft to the 231 had at least 2 different spline counts -
>Murphy says you'll get the wrong one if you don't check just what you need
>first.
>
>3. If you decide to change the tc input shaft, they come with 2 different
>bearing types and 2 different gear patterns, so you'll need to check what
>you have before ordering the part.
>
>I can't tell you for sure about the tranny-tc bolt pattern, but the AX15,
>AX4, and AW4 auto all have adapters behind them so I'd bet on a common bolt
>pattern.
>
>> I did as much reading as I could, but unfortunately it doesn't have
>> anything on the 232... so I am really kind of in the same spot. I do thank
>[quoted text clipped - 14 lines]
>>>>
>>>> Thanks again
>

--
Message posted via http://www.carkb.com

Bummer. I would recommend getting the factory service manual for this
vehicle or the Jeep Conversion Manual from Advance Adapters
(http://advanceadapters.com) so you can be absolutely sure what you have,
before buying stuff that might not fit. There is a round metal tag about as
big as a half dollar, fastened to the back of the transfer case housing. It
should have the model number on it. I haven't heard of a NP232, of course
that doesn't mean it doesn't exist. As Will says, there were a number of
different transfer case input shafts, not only spline count but also length.
It is essential to get the correct one as it must mate correctly with your
transmission output shaft. The Advance Adapters manual will help you
identify this part. They should also have various versions of the part for
sale.

Do you have a SelecTrac case in your XJ? That would be one, with a full
time four wheel drive mode in addition to 2HI, 4HI, N and 2LO. The NP231
only has the four speeds listed above, making it a "part time four wheel
drive" model. The full time SelecTrac model will have additional options
such as "Full" or "Lock". The shift pattern will be printed on the Transfer
Case shift knob, overhead visor, or inside the glove box. If so, the NP231
is a possible replacement but as has been said drive shafts, mounts and the
crucial transfer case input shaft may be different.

You should be able to buy a new housing from the Jeep dealer, if for example
the chain just jumped the sprocket and poked a hole in the case.
Availability and cost might be problems, but if the chain and the case are
the only unusable parts it would be reasonable to think of rebuilding what
you have now. It won't hurt to disassemble your existing transfer case and
take a full damage inventory. You probably need a manual for this.

On the Advance Adapters site they have transfer cases for sale with slip
yoke eliminator. These are NP231 and NP241, both part time transfer cases.
If you plan on keeping this vehicle for a long time, the available possible
upgrades to the transfer case are worth considering. A slip yoke eliminator
isn't strictly necessary on a Cherokee, but it won't hurt and you would have
to have drive shafts fabricated anyway to use a different model transfer
case.

Cheers,

Earle
"greenxj via CarKB.com" <u43105@uwe> wrote in message
news:831bcbb4e61aa@uwe...
> Thanks a lot. I guess the only thing to do now is start counting and
> pray...
> Sheeesh
> Thanks for the fast replies guys, and the help. I really appreciate it
>
> Will Honea wrote:
>>I looked at going the other way when I swapped an AX15 in my 88 MJ and it
>>seems that there are a couple of PITA items that may bite you in your
>>process. These are from memory 5-6 years ago, so take them for what they
>>are worth.
>>
>>1. I'm pretty sure that the np-232 is longer than the np-231 so you may
>>have
>>to change the drive shaft(s).
>>
>>2. The input shaft to the 231 had at least 2 different spline counts -
>>Murphy says you'll get the wrong one if you don't check just what you need
>>first.
>>
>>3. If you decide to change the tc input shaft, they come with 2 different
>>bearing types and 2 different gear patterns, so you'll need to check what
>>you have before ordering the part.
>>
>>I can't tell you for sure about the tranny-tc bolt pattern, but the AX15,
>>AX4, and AW4 auto all have adapters behind them so I'd bet on a common
>>bolt
>>pattern.
>>
>>> I did as much reading as I could, but unfortunately it doesn't have
>>> anything on the 232... so I am really kind of in the same spot. I do
>>> thank
>>[quoted text clipped - 14 lines]
>>>>>
>>>>> Thanks again
>>
>
> --
> Message posted via http://www.carkb.com
>

I did get the factory service manual... As a matter of fact here's the link
for all that would like it. I printed it out and bound it... it's over 3000
pages. but well worth it.
http://pdftown.com/2000-Jeep-Cheroke...ce-Manual.html
and here is where you can get a lot of info on many others
http://pdftown.com/Pdf-eBook/Automotive.html
Just in case anyone wants info on other vehicles.
Thanks Earle for all your help, I did the swap. I used both my axles and
everything seems to be running just fine. i did find out that the case i have
is a 242. It was marked 232, and the dealer still couldn't explain how, but I
swapped the 231 and everything went in nice and easy. Each was 23 spline and
worked out well.
I don't know if it was dumb luck or just plain stupidity that got me through
this. But I will take it!
I did see the 231 SYE already and do plan on getting it, along with a drive
shaft... I have seen a lot here
http://www.jeeperz-creeperz.com/np23...or-p-6456.html
http://store.cseoffroad.com/1867660.html
http://www.rockymountainsusp.com/SlipYoke.htm
I will do it. I just have to get the $ up first.
Thanks everyone for their advice and help. I really appreciate it.

I hope the manuals help some people somewhere. Good luck if you undertake any
mechanical repairs.


Earle Horton wrote:
>Bummer. I would recommend getting the factory service manual for this
>vehicle or the Jeep Conversion Manual from Advance Adapters
>(http://advanceadapters.com) so you can be absolutely sure what you have,
>before buying stuff that might not fit. There is a round metal tag about as
>big as a half dollar, fastened to the back of the transfer case housing. It
>should have the model number on it. I haven't heard of a NP232, of course
>that doesn't mean it doesn't exist. As Will says, there were a number of
>different transfer case input shafts, not only spline count but also length.
>It is essential to get the correct one as it must mate correctly with your
>transmission output shaft. The Advance Adapters manual will help you
>identify this part. They should also have various versions of the part for
>sale.
>
>Do you have a SelecTrac case in your XJ? That would be one, with a full
>time four wheel drive mode in addition to 2HI, 4HI, N and 2LO. The NP231
>only has the four speeds listed above, making it a "part time four wheel
>drive" model. The full time SelecTrac model will have additional options
>such as "Full" or "Lock". The shift pattern will be printed on the Transfer
>Case shift knob, overhead visor, or inside the glove box. If so, the NP231
>is a possible replacement but as has been said drive shafts, mounts and the
>crucial transfer case input shaft may be different.
>
>You should be able to buy a new housing from the Jeep dealer, if for example
>the chain just jumped the sprocket and poked a hole in the case.
>Availability and cost might be problems, but if the chain and the case are
>the only unusable parts it would be reasonable to think of rebuilding what
>you have now. It won't hurt to disassemble your existing transfer case and
>take a full damage inventory. You probably need a manual for this.
>
>On the Advance Adapters site they have transfer cases for sale with slip
>yoke eliminator. These are NP231 and NP241, both part time transfer cases.
>If you plan on keeping this vehicle for a long time, the available possible
>upgrades to the transfer case are worth considering. A slip yoke eliminator
>isn't strictly necessary on a Cherokee, but it won't hurt and you would have
>to have drive shafts fabricated anyway to use a different model transfer
>case.
>
>Cheers,
>
>Earle
>> Thanks a lot. I guess the only thing to do now is start counting and
>> pray...
>[quoted text clipped - 29 lines]
>>>>>>
>>>>>> Thanks again

--
Message posted via http://www.carkb.com

On Apr 24, 9:55*pm, "greenxj via CarKB.com" <u43105@uwe> wrote:
> I did get the factory service manual... As a matter of fact here's the link
> for all that would like it. I printed it out and bound it... it's over 3000
> pages. but well worth it.http://pdftown.com/2000-Jeep-Cheroke...ce-Manual.html
> and here is where you can get a lot of info on many othershttp://pdftown.com/Pdf-eBook/Automotive.html
> Just in case anyone wants info on other vehicles.
> Thanks Earle for all your help, I did the swap. I used both my axles and
> everything seems to be running just fine. i did find out that the case i have
> is a 242. It was marked 232, and the dealer still couldn't explain how, but I
> swapped the 231 and everything went in nice and easy. Each was 23 spline and
> worked out well.
> I don't know if it was dumb luck or just plain stupidity that got me through
> this. But I will take it!
> I did see the 231 SYE already and do plan on getting it, along with a drive
> shaft... I have seen a lot herehttp://www.jeeperz-creeperz.com/np231-slip-yoke-eliminator-p-6456.htmlhttp://store.cseoffroad.com/1867660.htmlhttp://www.rockymountainsusp.com/SlipYoke.htm
> I will do it. I just have to get the $ up first.
> Thanks everyone for their advice and help. I really appreciate it.
>
> I hope the manuals help some people somewhere. Good luck if you undertake any
> mechanical repairs.
>
>
>
>
>
> Earle Horton wrote:
> >Bummer. *I would recommend getting the factory service manual for this
> >vehicle or the Jeep Conversion Manual from Advance *Adapters
> >(http://advanceadapters.com) so you can be absolutely sure what you have,
> >before buying stuff that might not fit. *There is a round metal tag about as
> >big as a half dollar, fastened to the back of the transfer case housing. *It
> >should have the model number on it. *I haven't heard of a NP232, of course
> >that doesn't mean it doesn't exist. *As Will says, there were a number of
> >different transfer case input shafts, not only spline count but also length.
> >It is essential to get the correct one as it must mate correctly with your
> >transmission output shaft. *The Advance *Adapters manual will help you
> >identify this part. *They should also have various versions of the part for
> >sale.
>
> >Do you have a SelecTrac case in your XJ? *That would be one, with a full
> >time four wheel drive mode in addition to 2HI, 4HI, N and 2LO. *The NP231
> >only has the four speeds listed above, making it a "part time four wheel
> >drive" model. *The full time SelecTrac model will have additional options
> >such as "Full" or "Lock". *The shift pattern will be printed on the Transfer
> >Case shift knob, overhead visor, or inside the glove box. *If so, the NP231
> >is a possible replacement but as has been said drive shafts, mounts and the
> >crucial transfer case input shaft may be different.
>
> >You should be able to buy a new housing from the Jeep dealer, if for example
> >the chain just jumped the sprocket and poked a hole in the case.
> >Availability and cost might be problems, but if the chain and the case are
> >the only unusable parts it would be reasonable to think of rebuilding what
> >you have now. *It won't hurt to disassemble your existing transfer case and
> >take a full damage inventory. *You probably need a manual for this.
>
> >On the Advance *Adapters site they have transfer cases for sale with slip
> >yoke eliminator. *These are NP231 and NP241, both part time transfer cases.
> >If you plan on keeping this vehicle for a long time, the available possible
> >upgrades to the transfer case are worth considering. *A slip yoke eliminator
> >isn't strictly necessary on a Cherokee, but it won't hurt and you would have
> >to have drive shafts fabricated anyway to use a different model transfer
> >case.
>
> >Cheers,
>
> >Earle
> >> Thanks a lot. I guess the only thing to do now is start counting and
> >> pray...
> >[quoted text clipped - 29 lines]
>
> >>>>>> Thanks again
>
> --
> Message posted viahttp://www.carkb.com- Hide quoted text -
>
> - Show quoted text -

This is the lowest cost one I have seen:

http://www.performanceoffroadcenter....roducts_id=153

I did the swap. Other than a little weird whining noise, everything seems ok.

I haven't tried the 4wd because well... because I can't pull up the level
past the 4 wheel part time on the guage (I know it's wrong) I just don't know
how wrong.... It gives me a lot of trouble coming up, so i don't want to
break anything...
other than that, she runs and it's fine

nrs wrote:
>> I did get the factory service manual... As a matter of fact here's the link
>> for all that would like it. I printed it out and bound it... it's over 3000
>[quoted text clipped - 66 lines]
>>
>> - Show quoted text -
>
>This is the lowest cost one I have seen:
>
>http://www.performanceoffroadcenter....roducts_id=153

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200804/1

see there is the problem. I can get the lever back one position, but it is
way too easy to fall back into s wheel. If I hit a bump I know it will dis-
engage. Anything other than that, it won't do it. I have tried with the truck
in neutral as well. Still a no go.
I have no idea what to do about this one.

noneofyourbusiness wrote:
>>I did the swap. Other than a little weird whining noise, everything seems ok.
>>
>[quoted text clipped - 3 lines]
>>break anything...
>>other than that, she runs and it's fine
>
>[snip]
>
>Whining is "fine"?
>
>Anyway, ignoring the labels from your old setup, all the way forward
>is of course 2wd high. Pulling straight back engages 4wd high. Putting
>the tranny in neutral, and then pulling the lever to the right and
>back should get you 4wd low.
>
>This, of course, assumes that I know what I'm typing about ;-)
>
>...

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200804/1