That cavity is where the pump would go. The catalogs list that cavity as having approximately 3 pints capacity. I would be inspecting for cracks and mating joints to identify possible leaks before trying to pour 3 pints of oil in there!
But while we are on the subject, as I get into cleaning up and refurbishing the grungy old MFC I acquired a couple months ago I will be looking for current day suppliers who may have a pump that can be adapted to the same task and fits in that space. I will let you know what I find, but don't anyone hold your breath. I have a long ways to go and the recent snow and cold weather here in Massachusetts is presenting a big setback.
Spiral_Chips
If I decide to go with coolant I will us a outside bucket for it. When I was cleaning the inside of that cavity on mine it was full of all kinds of chips. And being in the cavity it would be hard to clean out plus it is only 3 pints.