Bushings on the 140 distributor

[crowdaddy]

I'm not sure, in fact I don't know where the bushings are, however I'm assuming they are inside the unit, distributor.
There is a screw on the side. Is that where the grease should go? It seems that that was difficult to undo last night and so I left some wd on it over nite. Will this work? To put the grease in that?