Low voltage

paul

Well-known Member
Well, see if I can figure out what went wrong with the Gleaner L3. Combining beans like a fool finally, and second round with all the lights on it smelled a little funny, and low voltage, lights got dimmer.

I just hate electrical issues, as one person I can never duplicate the problem and go test for it at the same time... just have to stumble along blind until the problem becomes obvious.....

The belt, the alternator, the batteries, the battery cables/clamps, a bad wire somewhere along the way, or what that main power terminal switchy deal in the cab?

See what's up.

Drove it to the yard with just one set of lights on and the voltage was up at or over 12v, it had been down to 11.

I would be no good with the new machines, I hate electrical problems.......

Paul
 
So, everything and anything works fine, runs all day at 14v on the gauge.

With the headlights on within 2 rounds it will fall to 11v and then everything gets pretty weak.

Running full throttle,with nothing on or running nothing electrical on, flip the main headlights on and the voltage drops to 12 and starts drifting lower.

Not to figure out why.

Paul
 

Could be a diode going bad in the alternator or if its internally regulated the regulator could be toast. That would be what I'd look at first since it only happens when you start asking for a high amp draw. It is also possible that you have a battery that is dieing and taking a lot of amps to recharge already. Then you add the load of the lights and the system couldn't keep up. Could you swap in some known good batteries and see what happens then? or maybe load test them to eliminate them? I just feel like it's an alternator issue but I'm just going off general electrical trouble shooting. I haven't worked on an L3 before. So its best to start eliminating the easy stuff first.
 

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