Posted by Steve@Advance on December 08, 2018 at 12:59:55 from (66.169.147.211):
In Reply to: Farmall 400 no charge posted by Joebanana on December 08, 2018 at 11:58:20:
Welcome Joebanana!
First, need a little more information, is this a diesel with a 12v generator, or gas with 12v conversion and an alternator?
As for the meter that stays all the way to the left, is that possibly an amp meter instead of a volt meter? If so, possibly it got hyper extended from the short, and is now just jammed in that position. If it never moved before, it was probably not working before it got shorted to ground. An amp meter actually measures the direction of current flow, not voltage. Being there is still power to the ignition switch, it still starts and runs,the meter is not the problem, it is just not reading as it should.
To diagnose the charging system, you need a volt meter. Check the voltage across the battery, engine running up to +1500 RPM, The voltage should be around 13.5v for a generator, around 14.5v for an alternator. If the voltage is down around 11.5 to 12v, it is not charging.
Check the voltage, answer back if it's a generator or alternator, look at the gauge carefully, see if it's an amp meter or volt meter, let us know...
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