Just for your information, The zerk or lubricator fitting was what Ford installed in the steering boxes or both seven tooth and two tooth steering gears for a long time before changing to a plug somewhere in October of 1929.
Fluid can be pushed through a zerk same as a grease soap but it's a small size port so it would take a while to fill them. Ford may have used a pump to fill the gear boxes at assembly branches but I don't know for certain. Ford dealers may or may not have had a pneumatic pump system plus there is no clean and neat way to know if the case it full or not unless it is empty where the service tech can count the number of pumps. Service personnel could easily overfill and make a mess of things so the zerk was deleted from the steering gear.
This is a link to Alemite history.
https://www.skf.com/alemite/about/the-alemite-story