Columbia Model AT motor disassembly question

[jboger]

Could use some help especially from someone who has disassembled an AT before I've uploaded two pictures of the motor in its current partially disassembled state. The first picture is an overview of the motor. The second focuses on my question and has a red box drawn about the part in question. There is a brass insert through which a pivot hole has been tapped. How do I remove that brass insert? Note the retaining screw has already been removed. I need to remove that insert in order to fully disassemble the motor and make sure the pivot holes are properly clean.