I pack those seals full of grease to prevent them from wearing out and putting grooves in the steel. I grease the shaft & bushings too. On the '87 that I refurbed I drilled and tapped the bell crank for a grease zerk fitting as well. There is a gap between the upper and lower bushing halves once installed, which provides a channel for fresh grease to be shot in there.
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This is a drawing of the pivot arm. When looking at the actual casting you'll see a small spot that is thick enough to drill & tap for a tapered thread grease fitting. There is only one tiny spot on the casting where you can drill into that gap in the bushings and where the metal is thick enough to support a zerk. You'll see it once you look for it.
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