Mon Jul 07, 2014 9:34 am
So I've given up on trying to rebuild my starter and want to be done with it, buying a new one. I am ignorant to the voltages but in buying a new starter, am I buying a 12v or a 6v (or am I buying a 6v but powering it with 12v)? It's a 1940 model and I am 90% sure everything is original. It's been a somewhat frustrating project as I can only work on it little bits at a time, stretched over months with nothing in between since it is in another state.
Mon Jul 07, 2014 1:42 pm
welcome to the forum. First of all, you can buy a 6 volt or 12 volt starter, your choice. Secondly, the year model doesn't designate what type of charging system it has becuase what it came with originally from the factory could have been changed over the 70 plus years its been around. Originally a 1940 "A" came with a 6 volt system, but MANY (I'd guess 80 percent plus) have been changed over to a 12 volt systems by previous owners.
Pictures of your tractor from all sides and the dash area would help us help you alot better! Since you're buying a new starter you need to buy one that matches the charging system your tractor has or is going to have.
Tue Jul 08, 2014 10:29 am
Not knowing anything else, the safe choice is a 6V starter. It will work fine on 6V, and it will also work fine on 12V as long as you don't crank more than about 15 seconds at a time. Your tractor should easily start in far less than 15 seconds, so if you are cranking for more than 15 seconds or so, you need to address that first.
Frankly I did not know that a 12V starter was commonly available for an A. They are a specialty product, really, if they are a true 12V starter. Some unscrupulous ebay vendors certainly would not be beneath advertising a 6V starter as a 12V, because the 6V starters work fine either way and the typical customer would not know the difference.
Look at the battery on your tractor. If the label is intact it will say 6V or 12V. If no label, count the caps. Each cap indicates 2V, so a battery with 3 caps is 6V, 6 caps is 12V. The exception to that rule is a "maintenance free" type battery. They will generally have 2 caps, but each cap covers 3 holes, making for 6 holes total, and a 12V battery.
Tue Jul 08, 2014 10:42 am
Local shop that repairs starters and generators. Will probably be cheaper, perhaps much cheaper, than purchasing a rebuilt starter from a commercial firm or taking a chance on E-Bay.
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