Re: 6 volt to 8 volt?

Posted by IH Man on February 07, 2003 at 16:38:28 from (209.240.198.63):

In Reply to: 6 volt to 8 volt? posted by Ken on February 07, 2003 at 14:06:10:

I have recently changed the battery in my 1951 IH "M" to 8 volt. When it would get warmed up after running a while the 6 volt just would barely turn it over. The engine has only 80 hours on it since rebuild and I assume tighter clearances after the engine heats up makes the starter work harder. I purchased an 8 volt battery from Tractor Supply Co. store and installed it. whatever model farmall you install an 8 volt into, you must adjust the voltage regulator to allow the generator to put out at least 9 volts. Most delco regulators
are two contact type. One set is for voltage adjustment. It has a spring on the side of the contact and a phillips head adjustment screw. By turning the adjustment screw clockwise it will increase the generator output. You must hookup a volt meter to the battery, start the engine, warm it up and then open the throttle wide open. Slowly adjust the regulator screw until you read 9.0 to 9.5 volts. Be careful with your screw driver, ideally insulate it by wrapping it with plastic tape to keep from accidently from shorting out the contacts. Also be very careful in removing the regulator cover, keep dirt out of the contacts and reinstall the same way it came off.
Light bulbs can be a problem if you run lights often..the 6 v bulbs don't like 8 volts for long duration. I use my "M" for pulling, so it isn't a daily or weekly work tractor. Some guys I know that have a "C" have run it for years with an 8 volt battery with no problems. Hope this helps...

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