Darn, that sucks Don. I don't know anything about a generator. But, I know slightly more about cars. I think sometimes something will say "such and such is bad." So you put in "such and such" and find out it went bad for some other reason. What I'm saying I guess is maybe it might be a good idea to find a good generator service center and at least have them do a good diagnosis on it? I dunno, maybe it's a waste of money. But, I just fear replacing that part and then finding out it fried out for some other reason. Or, maybe it's not even fried out but whatever tells you it's fried out thinks it's fried out.
'03 Freightliner FL112, 295" wheel base, with '03 United Specialties 26' living quarters, single screw, Cat C12 430 h/p 1650 torque, Eaton 10speed , 3.42 rear axle ratio