Posted by John T on July 31, 2011 at 09:04:16 from (173.243.181.15):
In Reply to: charging problem posted by farmallboy15 on July 31, 2011 at 07:36:50:
To expand on Jims response and answer your question about what gets grounded.
ITS EVENTUALLY THE GENNYS FLD POST THAT NEEDS A GROUND and the path is from FLD on genny,,,,,,,via a wire up to light switch,,,,,,,,,via EITHER the Field resistor on the switch (Low charge) or direct to frame ground (via the switches ground) for High Charge.
Try as Jim noted to ground the Gennys FLD post directly. If she then charges that tells me the Genny itself is okay, so the problems theres no ground connection via the light switch circuit (dead ground for High Charge, resistive ground via switch resistor for Low Charge)
The other thing is the Cutout Relay MUST close so the gennys output can get to the battery to charge it. Its open when tractor is setting but when running once/if the gennys voltage exceeds battery voltage IT CLOSES. THE CUTOUT RELAY ALSO NEEDS A GOOD GROUND TO WORK. When running if you temporarily dead ground the gennys FLD post but still no charge you can jump past/across the relay by momentarily wiring its BAT to its GEN/ARM and if it charges then but not otherwise the relay is bad or not well grounded.
If the gennys passes BOTH my Motor tests it ought to charge iffffffffffff alls wired right and FLD is getting a ground per the above
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