Identification of fire hazard panel. For more info on dangerous panels, see my post “4 Outdated and Unsafe Electrical Panels That Could be Hiding in Your Home”
Identify all the wires with number tape
remove all wires from bus, ground bar and neutral bar, move them out of the way of mounting screws
Remove panel, cut new panel to size in sheet rock. Remember you need extra space to land wires.
If there are wires coming in from the sides reroute them. I did this using a hole saw, which I have found to be less damaging to sheet rock.
land wires in new panel
Land wires in ground and neutral bar and in breakers of new panel.