Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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There are no known "issues" with this, but there are a couple of things that can cause it.
The most common would be that the DPE breaker is weak, or is being overloaded.
A bad rotor or dirty slip rings could cause the DPE to overheat.
But it is very weird that it would run that long before losing power. Normally it would be a time frame of more like 20 - 30 minutes.
The next most common thing would be a voltage regulator going bad.
Unfortunately, neither of those can be easily tested with the genset mounted in the coach. The component are inside the control box, and access is very limited with the top cover on.
DPE is Dual Phase Exciter. It is a special circuit breaker located in the control box.
The voltage regulator is also in the control box.
The slip rings are part of the rotor, which is the center part of the generator that turns with the engine.
The brushes are part of the beariung carrier, and ride against the slip rings,.
The genset needs to be completely disassembled to access the brushes and slip rings.
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