The job is complete! The new case arrived from Kansas, the guts from the old alternator were moved by a local rebuilder, tested and the unit installed yesterday in a little less than 4 hours. This time with the bus "in the air" as Jon suggested.

All seems good with both alternators doing what they are supposed to do, charge batteries. Florida Detroit refunded the full price on the new (wrong voltage) unit and the core charge, did some minor chassis work at no charge and I'm through with this lesson.

I've made some notes in the CC book to remind me which alternator does what and at what voltage for future quizzes. I dont know that I'll ever get all of the old oil and grease out from under the engine compartment, but I'm working on it.