I'm kind of new to the Jeep world and wondering what TCase I have my 2000 XJ. Is there a picture guide somewhere that shows? I tried searching here and found nothing.

Thanks

 

Does your tcase have 2hi, 4hi, N, 4lo? or does it give an option for Full time 4hi and part time 4hi?

The first option would be the NP231, the second would be the NP242.

 

so i have the NP231. is that a good tcase?

 

They are both good cases. However do not operate the NP231 on dry pavement as it will bind the driveline and damage the case. The NP242 can be drivin on pavement in the full time 4wd mode.

Just for clarification here is the shift pattern indicators for each.

NP231:

NP242:

 

x2. I have one of each in my Jeeps. As a personal preference, I prefer the 242 for the full time 4wh drive in the winter when roads are a mix of slush, snow, and dry pavement which is frequent out here.

Both are great for off road use though.

 

You could also crawl under ur jeep and look at the ID tag on the transfer case to help identify.

 

thanks for the pictures!

 

Yeah... that would have worked too, but is a bit more dirty.

 

When you say do not operate on dry pavement, what exactly do you mean. I've been having some problems with my NP231 and if you could help explain why that would be AMAZING!

 

Holy bringing back dead threads batman

Ask your question in the ask a question thread and be more specific. This thread is from 2009

 

Do not operate 4HI or 4LO on dry pavement...... The transfer case locks the front and rear axles together and they will turn at the same rate, which does not happen when you are turning. Off road (or in snow/ice on road) there is enough slippage in the terrain to allow the tires to slip enough not to bind the transfer case, however on dry pavement the tires grip the pavement and do not slip and the transfer case will bind eventually causing damage.

If 4wd is engaged and you are on dry pavement you should notice, when you turn it will feel like your XJ is lurching or trying to hop.

What problems are you having?

 

As in, don't put your case in 4wd on dry pavement. The driveline needs slippage, so only use on lose terrain. What exact problems are you having?

 

AHHHH ok that EXPLAINS EVERYTHING haha. My linkage from my lever in side the jeep to the transfer case is broke, Meaning to switch from 4hi or lo to 2hi i need to go under the jeep and manually do it. Since it has been snowing a lot in syracuse I have just kept it in 4hi, but i have notice when I'm on dry pavement it and i try and turn it lurches forward.
Should I be looking for a new T-case or just the linkage? Is it possible to fabricate the linkage?
Also when i do get this fixed, when shifting from 4hi to 4lo or to 2 hi, how should the jeep me moving? rolling? stationary? in Drive? in park? Just want to make sure I'm doin things right.

Clearly I'm new to the whole jeep/4wd thing. But i want to learn and am loving the jeep.

 

a new linkage will not fix the "lurching" on dry pavement. changing out the NP231 for a NP242 which is a full time transfer case (meaning you can use it in 4HI all the time, wet dry, snow, mud....) will fix the lurching.

or since you can shift on the fly with the NP231 just watch the terrain in front of you and shift in and out of 4 HI as needed/expected.

 

Yeah you can make the linkage yourself.

If you think you can make the linkage yourself google "redesigning the transfer case linkage Hudson". That's my write up on how to build a linkage for a 231.