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Onan Generators

Onan MCCK 6.5

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Old 12-24-2018, 09:49:12 PM
jamie10017 jamie10017 is offline
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Default Onan MCCK 6.5

Does anyone know of someone or a company that can check out the generator end of my MCCK to see if its worth repairing . I want to rebuild the engine but if the generator is not working is it worth doing anything to it other than selling it for parts. Thanks
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Old 12-25-2018, 04:58:07 AM
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Billy J Shafer Billy J Shafer is offline
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Default Re: Onan MCCK 6.5

The only way to check out the generator end. Is to have it running. You can check each section with it not running. If it meets specs it is most likely ok. Need to know what model and serial number you have. To get you the correct manual. The test are not hard to do.

Cummins/Onan is going to tell you it is not worth fixing. But they will gladly sell you a 3600 rpm screamer. Which you do not want.

Go to our manual site and look up these manuals.
May not be your spec. But they will give you an idea how to do the test.
I don't talk to myself. This early in the morning. Why the hell should I talk to you.
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Old 12-25-2018, 09:12:30 AM
Pauls12 Pauls12 is offline
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Default Re: Onan MCCK 6.5 look here for above manuals
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Old 12-25-2018, 03:01:34 PM
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BigBlockChev BigBlockChev is offline
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Default Re: Onan MCCK 6.5

Post the full model and serial # and some pics of the engine , snap the cover off the generator end and give us a few good pics of the windings. Also give us the story of the unit , was it running recently , has it been sitting forever, was it ever under water. We might be able to shed some light on things for you. I have a guy in Florida who will buy some of the later production units , the ones with a separate starter motor. Cheers Dan
It's always something simple.
One test is worth a thousand guesses.
The Feynman method , teach it to a kid , then you understand it.
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