Hello all
I have somewhat of an odd situation. The NP231J Transfer case that I pulled from my 89 yj was mounted to the BA10 Transmission and had the 21 spline input shaft.
I recently decided to switch over to an AX15 and just figured I'd purchase the USA Standard #ZTNP17449, 23 Spline input shaft.(Direct replacement for the 95 and older np231 TC) and just swap that out and call it a day.
Well, apparently it isn't that simple. It looks like the right input shaft but it has some small differences that are making me second guess if this setup is going to work.
First difference. The bore diameter for the cap/pilot bearing in the new input shaft is way bigger than the bearing that i got in the rebuild kit, and second, I measured the overall diameter O.D of the teeth on the new one and its roughly. 040 smaller than the old one, so when I insert it into the planetary gear and spin it, it feels noticeably looser and makes more of a rattling noise than the old one. If anyone has some knowledge on this situation, any input would be greatly appreciated. Thanks, Mike
I have somewhat of an odd situation. The NP231J Transfer case that I pulled from my 89 yj was mounted to the BA10 Transmission and had the 21 spline input shaft.
I recently decided to switch over to an AX15 and just figured I'd purchase the USA Standard #ZTNP17449, 23 Spline input shaft.(Direct replacement for the 95 and older np231 TC) and just swap that out and call it a day.
Well, apparently it isn't that simple. It looks like the right input shaft but it has some small differences that are making me second guess if this setup is going to work.
First difference. The bore diameter for the cap/pilot bearing in the new input shaft is way bigger than the bearing that i got in the rebuild kit, and second, I measured the overall diameter O.D of the teeth on the new one and its roughly. 040 smaller than the old one, so when I insert it into the planetary gear and spin it, it feels noticeably looser and makes more of a rattling noise than the old one. If anyone has some knowledge on this situation, any input would be greatly appreciated. Thanks, Mike