Unrelated, except it might help someone working on their alternator. Personally, I would simply take the whole thing apart and replace brushes and install a kit. It isn't that difficult on these old style alternators.
FRONT CASE REMOVAL OR RE-CLOCKING without disturbing the back of the alternator (brushes) This procedure also helps for cleaning and/or front bearing replacement.
Using a 1/2"impact wrench, holding the fan and pulley with one hand (I suggest a glove or a thick rag if your hands are tender, though I often do it bare handed), spin off the pulley nut, lift the pulley, spacer and fan out. Mark clock rotation of rear housing to front housing (felt tip marker or simply take notes), remove three bolts that hold the case halves together being careful to NOT ALLOW THE HALVES TO SEPERATE, and this is where you want to be careful:
Watching out that the center windings stay against the rear outer case housing and simultaneously pressing (or tapping with a soft, brass hammer) down on the front shaft while slipping ONLY the front case upwards. Now be very careful, the back will try to separate too but unless you want to fiddle around with the brushes, keep that from happening.
I've done this many, many times, usually clocking the alternators on mid-80's GM cars but it work well on these early Ford alternators too. Hope it helps somebody in their detailing efforts.
Richard