Good Sam Club Open Roads Forum: Generator breaker keeps shutting off immediately


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dougrainer

Carrolton, Texas

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Joined: 06/11/2007

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Posted: 02/28/21 06:35pm

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SHRED wrote:

Update:

Replaced brushes and springs.
Shined the rings.
That brought my stationary ohm reading into tolerance on the 9/10 pins at 25 ohms.

Problem is during spinning the ohms flucuate from 0.00 to OL at those same pins.
I think I have a short in the rotor.

Hope not, expensive fix. You CAN buy a re-wound Onan Armature for a lot less than new. Doug

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 02/28/21 06:52pm

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Not definitive. Use 12 volts. A battery, a 0 ohm resistance will induce a substantial spark. No substantial spark no short. Use positive on the slip ring furthest outboard. This induces inherent magnetism.

Opens are common direct shorts are rare. Check 20 M resistance slip ring to generator chassis.

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