There's an excellent local company that refurbs alternators that has the test equipment as well. I've used them in the distant past but still hear good things about them.You can usually get the alternator refurbed with new brushes, it's quite easy to do yourself if you have the bits..!!
What's the voltage gauge doing?
C
Now that's one of those obvious questions that when you've got the thing in bits someone asks. Arghh!! Why didn't I look beforehand???
Not that the voltage gauge is terribly reliable either!!!
P