I'm rebuilding my Transfer case (NP231, 95 xj 4.0, 4wd, 173K) simply because I had to take it out anyway to change the tranny. I wasn't noticing any problems with it besides a very small leak.
Upon cracking it open I notice that there aren't any spines on the inside of the oil pump drive gear to engage into the mainshaft splines - which means my oil pump isn't turning, and at some point they were all sheared off.
So, hopefully it hasn't been like this for long, but has anyone else experience this? What would make this happen, and how do I avoid it in the future? It just seems really strange to me...it's not like the oil pump was locked up, the gear would still move and all. Also, would this mean the TC is ruined if it was like this for a while, or would it get enough 'splash lubrication' to keep it going OK? (I don't use 4wd much anyway)
Any ideas?
Upon cracking it open I notice that there aren't any spines on the inside of the oil pump drive gear to engage into the mainshaft splines - which means my oil pump isn't turning, and at some point they were all sheared off.
So, hopefully it hasn't been like this for long, but has anyone else experience this? What would make this happen, and how do I avoid it in the future? It just seems really strange to me...it's not like the oil pump was locked up, the gear would still move and all. Also, would this mean the TC is ruined if it was like this for a while, or would it get enough 'splash lubrication' to keep it going OK? (I don't use 4wd much anyway)
Any ideas?