i have an 87 XJ with a NP231 transfer case, recently I'm unable to shift into 4 low. The 4 HI works fine... I've tried manualy disconnnecting the linkage and im still having this problem. When i attemt to engage 4 low it makes a loud klunking noise followed by this nasty grinding sound. Im just wondering if it could be the chain slipping... Greatly appreciate it is anyone can help!!
4low grinds all nasty...wont engage!!!!
- Thread starter astars921
- Start date
Bounty__Hunter
Super Moderator
Likely wear on the shift fork pads, and maybe wear on the hard parts inside the case.
Welcome to the Z. Take it apart and, if you need to replace any worn parts, I've got a bunch of 231 parts.
Welcome to the Z. Take it apart and, if you need to replace any worn parts, I've got a bunch of 231 parts.
Bounty__Hunter
Super Moderator
Easy to do, if you have a pair of lockring pliers. They're the duckbill type pliers to remove the lockrings from the mainshaft.
Dan Fredrickson
New member
Another option if you haven't yet done the work......
You can get them from pick & pull for way cheap and "Most" transfer cases have less than 3 hours of use in the life of the vehicle, many have Never been engaged. If the undercarrige is clean (no dents or scrapes) you can feel pretty comfortable with useing it as is, replace the seals and run it, should be under $200 total, take it to a shop and it will be $1500.
You can get them from pick & pull for way cheap and "Most" transfer cases have less than 3 hours of use in the life of the vehicle, many have Never been engaged. If the undercarrige is clean (no dents or scrapes) you can feel pretty comfortable with useing it as is, replace the seals and run it, should be under $200 total, take it to a shop and it will be $1500.
Bounty__Hunter
Super Moderator
I think the set of pads was under $10 last time I bought them.
I'd start a new thread for the other question.
I'd start a new thread for the other question.
