This is what it looks like to prepack a U-joint when you don't want to have to fill the cavity by using a grease gun. I was able to get the entire 14 oz. tube in, except for an inch at the bottom of the tube. I worked some heavy oil into the U-joint parts first, then packed it solid with grease.
I then installed the steel cap with a gasket on each side of the flange and used some of the remaining grease to coat the cap.
Why is it that all the repro U-joint cover bolts have the holes for the castle nuts drilled about 2 threads to close to the head of the bolts?