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WHNerd

GT-14 charging issue

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WHNerd

What would cause both wires from the stator to be to hot to touch when connected to rectifier and engine running. 

K321 Kohler engine  Thanks

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pfrederi

Could be the battery is weak and the regulator is heavily charging it drawing more power from the stator.  Could be a corroded connector increasing resistance in the wire.

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953 nut

:WRS:

A couple of likely things come to mind. As Paul said it could be the battery itself. The other likely culprit would be connections in the electrical system that are not tight or have become corroded, this would place a high resistance load between the battery and the charging system.

Here is an explanation I have saved from an older post made by @Save Old Iron  This was an answer about another model, but the information is relevant.

 

Think about it - if you forced a sudden surge of lets say 35 amps thru a 30 amp fuse - the fuse internal element slowly "melts" - usually within a few seconds - you see a melted wire in the fuse body and the fuse body and leads remain looking like they originally did ( give or take a little). If you dead shorted the battery thru the fuse to the chassis, you may blacken the inside of the fuse but the fusible element melts long before you have a chance to cook the entire fuse body like in your picture.

Same idea for the white plastic engine harness connector - the brown discoloration is from cooked plastic - where is the heat coming from ?? The "Molex" style connectors used in this tractor series are in a harsh, corrosive environment. Vibration causes the connections to loosen - corrosion starts within the metal terminals and a voltage drop develops across the corrosion.

If you have a 10 amp current flowing across a 1 ohm resistance (contact corrosion) the electronics formula to calculate power = current squared times resistance

so 10 amps x 10amps x 1 ohm resistance = 100 watts !!

100 watts of connector heating is the same as laying a 100 watt soldering iron on the connector.

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peter lena

agree with 935 nut, i am leaning toward the corrosive issue, since going after every connection and adding new and dielectric grease on any contact point on three tractors , no more issues , pete

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WHNerd

Thanks for the tips, the dielectric grease solved the problem.

Again thanks, y'all are great!!!

 

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