Read my text before you. I did not run this machine with an oil pressure gauge that wasn't working. I pulled the engine because it was smoking. I inframed it.
My misunderstanding .
So many different terms we use .
An " In Frame " overhaul is where the engine stays in the machine .
If you pull the engine it's considered " Out of Frame " overhaul .
Spotted this video on a feller working on a Case 188D engine . Oil pump at 2:10 .