Brought home a 1951 4400 yesterday, rather had it brought home knowing that it had this problem as the previous owner told me it would not charge and that the battery was new. So I read in the service manual how to check the charging system which requires the use of a ammeter which I do not have - all I do have is a VOM. Should I just take the generator and take it to the rebuild place to have them test it? Not very electrically inclined I guess.
Good advise there. One thing I would recommend you try before taking everything off is to repolarize it first. It's possible the previous owner did work on the truck that required the procedure and didn't do it. When you touch the wire, don't hold it in place for an extended period. You might "let the smoke out". All you need is one spark.
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I took the generator and regulator out and took them to the shop. I did notice that one brush didn't have much pressure on it and when I got to the shop, the owner confirmed that it was a busted brush spring. I left it with him for a go-over and function test. He said at least a week turn around which is sort of bumming me out - I can't drive it and it is now in the way! Guess I'll find other things to do on it while it's sitting.
If you just need to move the truck a little go ahead and crank it up. It will run for a couple of minutes without causing any damage, even with the water pump not turning. Jerry
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