Drive Shaft seized on the final drive splines

[Grumpy Goat]

Wayne, I just had a look at the gearbox output shaft in the fiche, and it appears that the groove for the snapring is almost at the very end of the shaft (outlined in red below), with by far the bulk of the splines completely in front of it, so perhaps there is no groove in the inside of the splines of the front end of the driveshaft, because those spines are designed to slide entirely over the snapring.

Yes, after posting the above I figured that had to be it, judging by how far up the output shaft the coupling slid. Most likely the aft edge of the coupling's teeth rest on the circlip as it sits in the groove of the output shaft. Here is a picture of what my output shaft looked like prior to greasing.