Christian Crawlers 4x4 Club

Who's Your Spotter?

Club Forum

Post Reply
Forum Home > Ministry Events > RockTrac tcase help

Posts: 141

Ok, so my Lj has a Rubi tcase the PO swapped in.  Driving it home after buying it and about 450 miles in I blew out the speedo seal (at 1 am in Nevada MO)  anyway, earlier we had noticed that the tcase was staying in 4hi (therefore driving the DS, gears, spool and axles)  maybe it got too hot at highway speeds for a long period of time?  Either way I just plugged the sensor hole cause I really don't need a speedo since it can't really go over 60-65 anyway.

Now, back to the shifting.  It will not stay in 2hi on the street.  The torque will cause the gears to grind until it pops into 4hi and then will actually run fine (although I don't want it doing this for obvious reasons)  It also will not stay in 4lo.  It will pop into Neutral.  Sometimes I can rock it and get it back into low but then it will pop out again.

The last time in Clayton it wouldn't stay in lo, so I disconnected all of the linkages and shifted into lo by hand and then tied the shift lever on the case back with a ratchet strap so I could keep wheeling.

Now, the point of all this.  I've heard/read that there are plastic caps on the ends of the shift forks that can wear out.  I have the Tcase pulled and on a table, but I have never opened one up before.  I also haven't found a spec sheet anywhere with details on this model on opening it up.   Is there anyone out there that's willing to give me a hand?  I can turn a wrench and do most things myself, but the internals of a tcase intimidate me  and I can't get it apart and never get it back together cause they are just too much $$ to replace.



July 15, 2012 at 11:16 PM Flag Quote & Reply

Posts: 141
Anyone? Bueler?? Lots of runs that I've already missed, could use some help so I can be ready for the Fall wheeling schedule. Case is pulled and sitting on a table so all the "dirty" work is done

July 17, 2012 at 2:50 PM Flag Quote & Reply

Limited Member
Posts: 312

I tore a NP231 apart for the first time by myself. Take your time and lay it out in order on a table. Clean parts as you go and even take pictures if you can. I bet it is something simple.  Here is a little article about your transfer case.



 2000 XJ Sport, 4 1/2 lift,Dana 30, 8.25 rear, NP231,STANO front bumper, rear bumper in progress, TJ Moab wheels, ZJ V8 steering. In the process of front hoop, tires, fender trimming.


**ZJ rear gas tank skid, KJ Liberty rear disc brakes**



July 17, 2012 at 10:56 PM Flag Quote & Reply

Limited Member
Posts: 236
Did it stay in 4low after u disconnected the linkage at Clayton if so its probable a linkage arm problem

servants of the most high ...not rockstars

July 19, 2012 at 10:32 AM Flag Quote & Reply

Posts: 141

No  that was my first thought as well.  But it kept popping out.  So I tied a ratchet strap to it and over the tcase to hold it back and in low


July 27, 2012 at 12:12 PM Flag Quote & Reply

Posts: 194

you may already know this but mine shifts best and stays in low best when i shift it while rolling. mine jumps out of lo from time to time and rolling is almost required to get it to stay in Lo after it pops out. i do like the Novak linkage and may go with that if i keep having issues.

July 28, 2012 at 10:32 AM Flag Quote & Reply

Posts: 141
Correct, it is actually meant to be rolling to shift to 4 low, I did the best I could by rocking it while shifting by hand. If it hadn't had other issues (like not stayin in 2hi) I probably wouldn't care. But since the plan is to have this thing be dual purpose rig, I need the case to shift correctly.

July 28, 2012 at 6:36 PM Flag Quote & Reply

You must login to post.

"He brought me up also out of an horrible pit, out of the mud and mire, and set my feet upon a rock, and established my goings."

Psalms 40:2

Banner Photo

Great turnout for the first club run of the year at Rush Springs Ranch.  See our FB page for more pictures HERE

Club Charity

Click HERE to make a donation

April Issue

Check it out at!

Great Buy!

click image to enlarge

Great idea!  I just ordered one.  Click HERE for more info

Check it Out!

Upcoming Events

Thursday Apr 24 - Sunday Apr 27
Thursday May 1 - Monday May 5
Thursday May 8 - Saturday May 10
Saturday, May 10 All Day