231J jumps out of 4L - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > 231J jumps out of 4L

Black Friday Sale - Deep Discounts from ExtremeTerrain.com6th Annual, Beat Your Wife to the Credit Card Sale!FS: Wrangler RGB Multicolor Fog Light LEDs: Awesome Effect

Reply
Unread 04-03-2008, 09:54 PM   #1
hammerdown31
Registered User
2000 TJ Wrangler 
 
Join Date: Feb 2008
Location: niceville, fl
Posts: 3
231J jumps out of 4L

I have the np231 transfer case with 2.7? gears. when i put it into 4L it will jump out. sometimes in 2' sometimes half mile. when it jumps out almost impossible to get back in. opened up the transfer case for a SYE install and found one of the forks(the cast aluminum one) has the plastic bushing/guide worn on the rear side almost into the aluminum. gears appear to be in good condition very little wear and no broken/damaged teeth. has 103,000 miles on a DD. any suggestions?

hammerdown31 is offline   Reply With Quote Quick reply to this message
Unread 04-04-2008, 12:33 PM   #2
TJ_with_Tusks
Registered User
 
Join Date: Feb 2005
Location: Medford, MA
Posts: 515
my first guess would be the linkage. I installed a linkage extension bracket with my lift, and now its hard to get it into 4lo and pops out sometimes. By adjusting where on the bracket the linkage mounts, you can fix it. al least for me.
__________________
04' Columbia TJ
33" BFG AT's, OME HD lift, front airbag suspension, teralow 4:1 kit & supershort shaft kit, TW CV shaft, 4.10 gears, JKS body lift, track bars and quicker disconects, Warn 9.5ti, warn front bumper, garvin wilderness rack, and solid cast aluminum tusks,
TJ_with_Tusks is offline   Reply With Quote Quick reply to this message
Unread 04-04-2008, 01:10 PM   #3
hammerdown31
Registered User
2000 TJ Wrangler 
 
Join Date: Feb 2008
Location: niceville, fl
Posts: 3
thought that could be a problem but the np231 has a very strong detent inside the case to hold it into gear. Any other ideas?
hammerdown31 is offline   Reply With Quote Quick reply to this message
Unread 04-04-2008, 01:46 PM   #4
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 60,747
This could be caused by the t-case lever not pulling the t-case all the way into 4Lo. The shifter is known to occasionally pull slightly out of adjustment, out of the bracket where it is held in place by a large set-bolt. When it slips, it slips in the direction that causes problems with 4Lo not staying engaged. Not sure what caused the internal shift fork damage, I don't know if it could be the real cause or just incidental damage.
__________________
Getting Savvy...

Coolest offroad magazine ever! CRAWL Magazine

When you have a choice, buy American.
Jerry Bransford is online now   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

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.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.