Well okay then let me ask you this...
In the original 1963 C-10 Shop manual, it shows that there was a grease cup on the bell housing that runs down to the output shaft via a rubber hose and this cup should be greased every 6000 miles. The 68 has no such cup (and I don't remember one on my SM420....)
My 1981 international has a zerk you can get to via an inspection cover under the transmission in the area of the output shaft.
So perhaps it's not the actual throw out bearing I'm applying lube to, but the output shaft? Would you need to lube where the fork attaches to the throw out bearing?
