I have seen a lot of different grease cups but this is a first to me. The one on the left has a brass wire (spring?) with the two ends penetrating through the threads. I'm guessing these put pressure on groves in the cap to discourage it from turning.
Most T's used the one on the right with the leather seal or the pressed steel ones. Has anyone seen this type before or is it an oddity? It was on a '14 axle housing.
I believe that I have several like that. I don't know how common they really are, however.
Thanks Wayne. It's good to know there are others. I wonder if Ford ever used them. Might they be early?
Have one too, plus several of the Empress brand, with the spring wire and spike. Ford used these on the Fordson.
I've seen lots of those with the square spike and spring on assemblies I've taken apart, such as rear ends. If they weren't used on the cars originally, they were a popular replacement.