I've had an NP231J in the garage because it had a bad front output shaft bearing. I tore this thing down probably 2.5 years ago and now I've forgotten some things. Can you all help check my memory/assumptions below?
This is an NP231J that came out of an 2004 TJ 4.0 w/ automatic 42RLE.
1) The fwd output shaft brg I pulled out was an NSK 6060. But all the literature I'm seeing says it shoud be a 6060N where the N has an integrated snap ring in the outer race. But mine did not. I can only find general parts lists, is there a place to find as built part numbers?
2) Supplemental to #1, I'm looking for the parts list because I also want to change all my seals since I'm here. If I can't find it, is there any reason to think the trans input seal is different between auto and manual?
3) What locates the main input/output shaft? When I lift the whole gearbox by the rear output shaft it moves probably a quarter inch up and down, but I'm fairly certain I'm not missing any snap rings. I have the oil slinger that I might have shifted 2.5 years ago, but I imagine it's not a location feature?
4) Why do some NP231's not have tail cones? I just have the tail housing but no tail cone. In this photo, how do I tell if seal 31 is for the tail housing (item 42) or the tail cone (item 32)? It also doesn't have the oil slinger that I have (Crown number 5016615AA)
This is an NP231J that came out of an 2004 TJ 4.0 w/ automatic 42RLE.
1) The fwd output shaft brg I pulled out was an NSK 6060. But all the literature I'm seeing says it shoud be a 6060N where the N has an integrated snap ring in the outer race. But mine did not. I can only find general parts lists, is there a place to find as built part numbers?
2) Supplemental to #1, I'm looking for the parts list because I also want to change all my seals since I'm here. If I can't find it, is there any reason to think the trans input seal is different between auto and manual?
3) What locates the main input/output shaft? When I lift the whole gearbox by the rear output shaft it moves probably a quarter inch up and down, but I'm fairly certain I'm not missing any snap rings. I have the oil slinger that I might have shifted 2.5 years ago, but I imagine it's not a location feature?
4) Why do some NP231's not have tail cones? I just have the tail housing but no tail cone. In this photo, how do I tell if seal 31 is for the tail housing (item 42) or the tail cone (item 32)? It also doesn't have the oil slinger that I have (Crown number 5016615AA)
