After removing the fan belt I removed the generator adjustment arm. The generator hangs from a curved arm with a slot in it that allows for adjustment to tighten the fan belt. The arm itself mounts to the the thermostat outlet by a single bolt that threads back (towards the firewall).
I used a 1/2″ socket to loosen and remove the bolt, leaving the arm attached the generator.
With the arm removed from the engine, the generator was still attached by its mounting bracket which bolts into the side of the engine block and tethered into the engine bay by electrical connections. I just set it down on the battery tray and threaded the bolt back into its hole so I don’t lose it.
Then I removed the arm from the generator using a 9/16″ socket to loosen the adjustment bolt.