SD alternator was bad... pulled it yesterday and put in the spare from jaybobs wagon. The nuts are different, and the shaft is shorter, and the nut from Jay's alternator had chamfoered threads, but the nut from my GM alt worked... had to take off the spacer on the fan, but it fit...
Working like a champ now.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!