Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > Transfer Case NP231

Join Wrangler Forum Today

Thread: Transfer Case NP231 Reply to Thread
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the Jeep Wrangler Forum 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:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
03-09-2009 06:53 PM
Ricks91yj OK, it's done. Everything went good. The end extension came with the bushing installed (Thank God) I used the old extension to drive the seal in with a block of wood and a 3 pound hammer, BANG and it was perfect. You do need to pay attention to the extension housing, it looks like it will fit in any postion but not so, the deep groove inside needs to be left of the botttom bolt as your looking toward the front.I think I'm ready for summer
03-07-2009 05:08 PM
Ricks91yj Thanks for the tips guys.
03-07-2009 05:05 PM
NAVYCHIEF try freezing the seal. we used to do that to bearings we replaced on helicopters.
03-07-2009 11:35 AM
crawler666 I have had to bevel the edge of the new seal to get it started straight then used a big socket to drive it in place. the bushing should be installed with a bushing driver but have used a punch before(not recommended)
03-07-2009 11:29 AM
Ricks91yj I have the Chilton manual, it dose not give instructions as to technique. It's a tight fit and I don't want to damage the bushing or new seal installing them. Thank you for the scan offer though.
03-06-2009 08:11 PM
YjMopower You should Check Out The Haynes or chiltion manuals on how to , if you want i can scan that page for you.
03-06-2009 04:03 PM
Transfer Case NP231

I have my output seal removed, the housing extension was knicked and was letting oil drip past the seal, so I ordered a new one. It comes with a new bushing and I ordered the seal as well. Has anyone ever replaced these parts? I wonder how hard it will be to get the bushing in place and the new seal with out doing any damage. If you have any tips I would appreciate the help. This transfer case is on a 1991 YJ (rear output)

Posting Rules
You may post new threads
You may 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

All times are GMT -5. The time now is 10:55 PM.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC