Re: Farmall H won't start

Posted by Janicholson on October 19, 2005 at 20:23:22 from (66.173.50.37):

In Reply to: Re: Farmall H won't start posted by Dave BN on October 19, 2005 at 15:21:21:

A volt meter is placed between voltage and ground. In this case the load side of the ignition switch. Volt meters cannot allow current to pass through them they have high resistance. The amp meter is very important to the evaluation of your charging system during use. Volt meters are nice if you know what to look for, but it requires analysis to make sense of it. Buy an old automotive manual, or copy library info on electrical systems. An operating amp meter directly shows charging rate in amps, status of accessories when turned on (when the tractor is off), and states of discharge due to low RPM and accessory use (or failed charging system). All meters can fail (especially those exposed to weather) most quality amp meters are robust and operate for tens of years.
Use a modest analog (needle style) volt meter (about 30 bucks US) to do the checking.
Check many posts in these archives for circuit analysis. Good luck you can do it. JimN

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