Koehler 5 confidant generator

What is your location ? If your every traveling in tx take it to Texas and he could look it over.
If you could find a retired retired tech like him in your area it would be great just ask me how I know.

As I understand it. It worked but would always drop to 90 volts. Then you were burning things up with out knowing it. To me voltage should never drop below 109.So you have been overloading it all the time and didn't know it. So your unit was not able to carry both airs from the start or you have something wrong with the engine gov.

TEXAS wrote:
...snip...or you have something wrong with the engine gov.

How about the brushes? Or the surface they strike. Maybe the AC's need a good filter, condenser, evaporator coil cleaning to draw less.

Turning up the gov reminds me of all the shade tree mechanics that would turn up the car idle so the car wouldn't die at the stop light. Yes it works, but does it fix the true problem?

Best to either live with one AC running, or take it to a certified gen mechanic. Those that work on generators not knowing what they're doing, can get hurt or killed even.

OK to end the debate Iam going to run one ac at a time, we dont use it that much anyhow so not going to drop a ton of money in it. Its normally just my wife and I and the rear ac will freeze you out in desert heat.otherwise both ac's run ok by themselves while powering everything else. I'm not going to tear into it because those units are a bear to work on.
Thanks for all your replys..

John I have been working on Generators since 1968. Do I qualify.As a certified generator mechanic.

I have the same generator in my 96 GBM and have noticed occasionally the circuit breaker in the main box will trip running both AC's. I don't run the AC's on the generator often but twice when the temps got over 95 I noticed this. Mine happens after running for a while so I would not think it was the hard start capacitor. I was thinking it was more like a weak circuit breaker or the governor needing adjustment. It only seems to happen in the hot weather, I use both AC's to exercise the genset and it doesn't trip in 70-80 degrees.

In your case I would check for bad connections and weak breakers.As much as an RV flexes going through it's life. Things get loose. Also I have noticed that. When it really gets hot the problems show up more often.

TEXAS wrote:
In your case I would check for bad connections and weak breakers.As much as an RV flexes going through it's life. Things get loose. Also I have noticed that. When it really gets hot the problems show up more often.

Mine never throws a circuit breaker nor blows fuses. It just shuts down when 2 ac's try to run..