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Unread 06-18-2010, 06:34 PM   #1
Bastidjeep
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Clocking on the 231 transfer case

Is the difference on the transfer case or is it on the trans between the cherokee and the wrangler?

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Unread 06-18-2010, 06:35 PM   #2
UltimatE
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The transmission mounting holes are different on the cherokee. The transfer cases are the same.
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Unread 06-18-2010, 06:39 PM   #3
JeeperDon
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Ult is right, however the trans (AX-15) has room for both sets of drilled holes in the 6 interface bosses. I drilled out my AX-15 to allow the other clocking.
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Unread 06-18-2010, 07:06 PM   #4
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When using a non YJ AX tranny in a YJ, the NP231 transfer case will hit the skid plate because the T-case is "clocked" 10 degrees lower on the driver side, but you can redrill the location of the mounting holes at the rear of the transmission.

The transfer case clocking is determined by the mounting holes on the output of the transmission. Simply redrill the holes to raise the transfer case to the YJ height. In this pic, the holes on the right on each tab are the newly drilled holes that the YJ configuration requires to clear the skid plate.


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Unread 06-18-2010, 07:35 PM   #5
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This should just be made a sticky already considering how many times it gets asked.
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Unread 06-19-2010, 05:10 AM   #6
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This should just be made a sticky already considering how many times it gets asked.
You are making the assumption that the existence of a perfect answer in a sticky/FAQ somehow reduces the occurrence of newbs asking anyway. What it does is give us a place to point them too, and maybe type a bit less.
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Unread 06-19-2010, 06:07 AM   #7
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Quote:
Originally Posted by Mean Max View Post
When using a non YJ AX tranny in a YJ, the NP231 transfer case will hit the skid plate because the T-case is "clocked" 10 degrees lower on the driver side, but you can redrill the location of the mounting holes at the rear of the transmission.

The transfer case clocking is determined by the mounting holes on the output of the transmission. Simply redrill the holes to raise the transfer case to the YJ height. In this pic, the holes on the right on each tab are the newly drilled holes that the YJ configuration requires to clear the skid plate.


Max


Was this done by you??? Can you do a write up if so?????
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Unread 06-19-2010, 12:20 PM   #8
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Was this done by you??? Can you do a write up if so?????
It's a fairly simple procedure. Just make a template, rotate the template, mark and drill.

Took me about 30 minutes.
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Unread 06-19-2010, 03:01 PM   #9
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Was this done by you??? Can you do a write up if so?????
No it wasn't, but I have a template for doing that procedure. Coincidentally I have an AX-15 on the bench right now. It's a true YJ model, but I can use my template to demonstrate & document the procedure.

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Unread 06-20-2010, 12:02 PM   #10
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No it wasn't, but I have a template for doing that procedure. Coincidentally I have an AX-15 on the bench right now. It's a true YJ model, but I can use my template to demonstrate & document the procedure.

Max
I hope to see this soon. Thanks in advance for a write up.
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Unread 10-23-2012, 01:59 PM   #11
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Originally Posted by Mean Max View Post
When using a non YJ AX tranny in a YJ, the NP231 transfer case will hit the skid plate because the T-case is "clocked" 10 degrees lower on the driver side, but you can redrill the location of the mounting holes at the rear of the transmission.

The transfer case clocking is determined by the mounting holes on the output of the transmission. Simply redrill the holes to raise the transfer case to the YJ height. In this pic, the holes on the right on each tab are the newly drilled holes that the YJ configuration requires to clear the skid plate.

Max
So does this means that a NP 231 from an XJ, swapped into a YJ won't need any re-clocking?
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Unread 10-23-2012, 02:58 PM   #12
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So does this means that a NP 231 from an XJ, swapped into a YJ won't need any re-clocking?
Yes, fits in fine.
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Unread 10-23-2012, 05:23 PM   #13
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Here is one technique for redrilling the output housing of a transmission to re-clock the transfer case. http://www.stu-offroad.com/engine/aw-4b/aw-4b-4.htm
As frequently as this gets asked, we really should have our own writeup though, I dont have an XJ tranny laying around to do this on or I'd do one up for the FAQ.
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