I've had to jump my 55 three times in the last two weeks. I went to the auto electric store in town and he said bring in the generator and the regulator. I did that Friday morning. He bench tested the genny. It was good. Then he hooked up my regulator. It was bad. Called NAPA and they said they would have one in by 1:30 that afternoon. I went home and put the generator back in, cleaned up and went for lunch with the wife. On the way home I picked up the new regulator. I put that in place, hooked up all the wires but needed another pair of hands to pull on the generator while I was tightening the bolt on the bracket. I had to wait u til my go to friend was back in town around 8:00 that night. We got the belt tight, 1/4 to 1/2 inch deflection in the belt. The truck started right up. I took it for a drive to charge the battery and all is good. The old regulator looked real good inside but I guess a 63 year old electronic device can go bad! I still haven't put on the new fuel pump yet.....

old and new. And in case you are wondering, I put the old cover on the new regulator....


Old on left


inside of the old regulator looks very good....


I never saw this warning label before since it points towards the inside of the engine compartment.