Commercial Electric 81795 Installation guide

Hello! I've reviewed the instructions for the Commercial Electric Lamp Harp 81795. This document provides detailed guidance on how to install or replace the lamp harp, including steps for disassembling the lamp, replacing the harp, and reconnecting all electrical components. I understand the procedures in the document and can assist with any questions you might have about its use.
What should I do before starting installation?

What parts I should dismount before replacing lamp harp?

What is the method to remove the harp?

How should the socket shell be reinstalled?