A. The object of lubrication is to interpose a film of oil, grease or
some lubricant between the two surfaces that will prevent these rubbing
surfaces from coming into too intimate contact.
3. Q. What examinations should be made by the engineer to insure
successful lubrication?
A. See that all oil holes are open, cups filled and in good working
order, the packing in cellars evenly put in and in contact with the
journal. That waste on top of driving or truck boxes is in proper shape,
also that grease cups are filled, and the plugs and jam nuts in good
shape, and that the grease cellars contain sufficient grease for the
next trip.