Retcol said: (quoted from post at 04:49:51 01/07/09) I can tell the difference between a 6 and 12 volt battery. However, it is difficult to determine when there isn't any battery.
The answer is, there is no 100% sure way to tell just by looking, then.
If there's no battery and the tractor was originally 6V, then the best you can do is ASSUME the generator is 6V and go from there. Further research and testing will confirm the generator's true identity.
Having a 6V alternator or a 12V generator on a tractor originally equipped with a 6V generator is extremely rare. The overwhelming majority of conversions were done with 12V alternators because:
1. 12V alternators are cheap and widely available. 6V alternators are sometimes tough to find, and 12V generators are expensive.
2. 12V "solves" the starting problem. A 6V alternator only eliminates the reliability issues of 6V generators.
3. 12V generators have the same reliability issues as 6V generators. Of course the reliability problems are more of a maintenance issue, but alternators are practically maintenance-free.
Tractor owners generally convert to solve two issues, the reliability problems with generator systems, and difficult starting.
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Today's Featured Article - Memories of an IH Super A When I was ? up to 10, I worked on my Papaw's farm in Greeneville, TN every summer. As I grew older (7), it was the thrill of my day to ride or drive on the tractor. My Papaw had a 1954 IH Super A that he bought to replace a Cub. My Papaw raised "baccer" (tobacco) and corn with the Super A, but the fondest memory was of the sawmill. He owned a small sawmill for sawing "baccer" sticks. The Super A was the powerplant. When I was old enough (7 or 8), I would get up early and be dressed to
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