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Onan 7HGJAE type B, error 3 code 15


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Old 09-03-2013, 06:07:16 PM
sdetweil sdetweil is offline
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Default Onan 7HGJAE type B, error 3 code 15

reading another topic, it seems I may have one of these failed rotors
this is the vertical engine shaft and generator rotor.

should I be able to turn the rotor by hand?
I would expect the belt to be tensioned against the engine.

I am getting fault code 3, error code 15. (under voltage), and the engine stops.

the rotor tests fine with my limited tools, about 32 ohms. (not exactly 31.97 per spec in 983-501).
need to test the stator, but I'd be really surprised that a static element could fail like this. 4150 hours.

but a belt could fail, and the rotor would turn.. but removing the base plate ain't easy.. got to get my engine hoist out again.

(you would think they would make the belt accessible without having to disassemble the thing)..

thanks far any advice
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