Re: charging problem

Posted by txblu on February 27, 2005 at 05:59:45 from (209.151.117.66):

In Reply to: charging problem posted by n8terry on February 26, 2005 at 22:05:28:

Agree with John,

Might turn on your headlights or put something across the battery to discharge it (some) and then see if you get a charge indication on startup.

Using an Alternator says 12v system on your tractor which says current is half what it would be on a 6v system. Your ammeter may be 80 amp (like used on 6v systems) and if so you will have a hard time seeing anything; even what John said. A 30 ampere gauge will give you a better chance.

Since it is a mechanical device and your tractor is 30+ yrs old, water could have gotten into the mechanism and rusted out the works.

14v at the battery with a good ground to complete the circuit says that your charging ckt is doing it's job; at least attempting it.

I have seen batteries that were dead/dying that had high internal resistance such that you could not charge them at a very high current....like a couple of amperes max. Even on a 30 amp gauge you would have a hard time seeing anything.

With the switch on, and nothing being fed but your ignition, you should have a max of only 4-5 amperes which on a 30 amp gauge would show (if your points happened to be closed) but wouldn't see on an 80 amp gauge. Pushing the start button would only be a few more amps to energize the starting solenoid; still not much to see.

A pair of 35w headlights and rear light (if you had them) would be visable with the engine (alternator output) off.

My 2c

Mark

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