Alright, I just recently bought a 96 Grand Cherokee 4x4 that came with a busted NP242 transfer case in it. I found replacement from a guy, he claimed it was from a 2001 or 2002. I thought I’d be able to change the sensors out from my old one and bolt it in but I have run into a problem with both sensors. My case has a (I believe it is) Speedo gear/sensor mounted in the rear portion of the case..well the one I got for replacement has a spot for that sensor..but it’s blocked off, as in no hole to insert the gear into..that’s my main issue.. the other senor next to the vent tube is just a bit too long on my old one. I’m assuming I have to take them apart and change the output shaft portion of the case from my old one to the new one to make the speedo gear work? I’m new to Jeeps so I’m just trying to get some guidance before I put it in and have to pull it back out, thanks for any help! Also if I do have to change the cases out will the newer one have the gear inside to drive the speedo gear?

Thanks! I just didn’t know if I’d have to change the whole mainshaft not knowing if the gear that drives the speedo could be changed by itself or not, appreciate the info 👍

not sure about that, probably won’t have it apart until tomorrow or Tuesday. Guess I’ll see.

I’ll give that a try, but I did go ahead and remove the boot on the tail shaft and the metal dust shield and tail shaft seal and there is only one snap ring down in there around the tail shaft up against the bearing..my old case has two snap rings..the same one and one more about an inch up from the bearing.

Well I got the rear portion of the case off and it has no gear for the speedo.. so now my question is does anyone know if I buy a new main shaft for a 96 242 will if fit in this newer 242 with using all the newer parts of this shaft? Are they interchangeable? I hope so or I just wasted money on this case..

I’m going to take my old case apart tonight and see about using it, I was told when it broke they were doing about 60 mph, so I’ll clean it up once it’s out and make sure it doesn’t look damaged and go from there. Thanks for the responses! I’ll post back when I find out something.

well I have both tail shafts out and they look identical without taking them any further apart..and looking at the one out of the newer case, it has some rust on it, I suppose from sitting so I’m thinking I could just put the old assembled tail shaft right into the newer case and call it done..I was thinking of swapping the newer parts to the older tail shaft but I don’t like the rust all over them.. so is there anything in particular I should do before swapping these things or just look them over really good to make sure all is the same and nothing is damaged on the old one and then just swap em?

the one on the right is the one out of the newer case and as you can see it has plenty of rust up and down it.

Went together nicely!