Hello. I am a newbie in the process of restoring a Vandercook No. 4, SN 18794. My husband, who was in aerospace mechanical engineering for many years, is providing advice and much moral support. He was surprised when I told him that the procedure for lubricating the impression cylinder gear teeth was to apply a light machine oil to the racks with each use. He thought this sounded wimpy for such a massive unit, and actually when we purchased the press these teeth were gummed up with some sort of heavy, and very dirty, grease. From my classroom experience and in the documentation I’ve consulted, the light oil, applied frequently, seems to be the way to go, though as you can see the gear teeth in the “after” photo do look dangerously clean. What is the rationale for this?
(The complete project is being documented, for the benefit of other newbies, at http://flickr.com/photos/7929005@N07/sets/72157601399864650/ )