For what help it may be to subsequent readers of this thread, I used the following steps to remove the alternator tonight:

Working from bottomside, I removed the small air duct which runs beside the air pump as well as the mounting plate for that duct. Then from the topside I removed the entire air filter housing, both the top and the bottom, which rests in push-in type retainers not requiring any nut/bolt removal. That gives adequate open visual and physical access to the harness nuts at the alternator as well as the two alternator mounting bolts. The large harness nut (13mmm) and the top bolt (17mm) are best accessed from topside and the small harness nut (10mm - box-end access only, no socket) and the bottom bolt (17mm) are best accessed from the bottomside. Once the alternator is loose, it can be taken out between the air pump and the frame member after a few trials to find an orientation that will let it pass through.

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Okiebenz