03 txt rear differential

[mattco270]

I picked up an 03 TXT. There is a large amount of what appeared to be diff. oil on the axle that was coming from the motor. I removed the suspension, axle and motor asm. and put it on some horses. I pulled the motor and saw that the oil was coming from the input shaft. I cleaned it up to find a snap ring and a bearing, no seal. I pulled the shaft and saw what seemed to be a grove for an o ring but know sign of it. I can not find any one listed as a replacement but did see that in shaft kits they come with one. Can someone tell me if they are serviced by themselves or if there even is one. Many thanks in advance.