<strong>07. </strong> The NP231 transfer case in this Jeep is a bit of a mystery. As previously mentioned, I found no fluid in it, nor drips, yet I know that we put fluid into it when it was built up at Xtreme Unlimited with a bunch of JB Conversions parts. Upon tearing it down, the only parts we found ruined were the front output sprague and the wide chain kit. The six-pinion planetary actually survived the ordeal, as did most of the bearings and other parts. We added the original chain and front output back to our NP231, and it has been fine ever since…though I am missing that wide chain kit and now wonder if the stock one will skip if I get this Jeep bound up badly in rocks.