NP-231 T-case - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 09-01-2006, 11:03 AM Thread Starter
Join Date: Aug 2006
Location: Pa.
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
NP-231 T-case

I'm planning on swapping out an NP-207 in my 87 YJ this weekend and I've picked up an NP-231 to replace it with. The input shaft has a 21 spline count so I don't anticipate any issues with that, but I noticed something on the NP-231 that I have a question on while I was draining the oil. One of the mounting holes that doesn't have a stud installed in it. It has something flush in the hole, there is something in the hole but it isn't a broken off stud. It kind of looks like some kind of plastic insert, or at least part of one. There does appear to be threads in the hole, and I wanted to know if anyone knows what the thing is. The diagram in my repair manual shows 6 studs, but this is the 7th hole, (which isn't shown), on the diagram.
I'm just trying to head off any trips to the auto part store, (covered with grease), to buy some part in the middle of the job like almost every time that I do something like this. Any advice?
Nimrod57 is offline  
Sponsored Links
post #2 of (permalink) Old 09-01-2006, 12:22 PM
Can't Get Enough
jeeperjohn's Avatar
Join Date: Sep 1999
Location: The Plywood State.... Florida
Posts: 1,340
Thanks: 0
Thanked 0 Times in 0 Posts
Re: NP-231 T-case

I don't know about all of the 231's, but mine is the same way. In my case there was is room for a nut to go on the stud so the hole was plugged.
jeeperjohn is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome