Next I pulled the fan belt. The fan belt runs from the crank pulley up around the water pump pulley, and around the generator pulley. It’s a simple set-up from before the age of power steering and air conditioning.
In order to release the belt and allow enough slack to remove it, I loosened the generator, which is mounted along a curved arm that is mounted to a plate on the engine. The generator-mounting arm has a slot in it that a bolt connects through to allow the location of the generator pulley to tighten the belt. So essentially the generator, based on its location, also acts as a tensioner pulley.
I used a 9/16″ socket to loosen the head of the bolt. The bolt is oriented facing with threads pointed down the highway (with the head of the bolt on the back side of the arm), and threads into the base plate of the generator.
With the bolt loosened but not removed, I slid the generator up and toward the engine, providing some slack in the belt.
And then I was able to slip the belt off of all the pulleys and remove it.
There does appear to be an aftermarket replacement belt available for this application; more on that later.