
TROUBLESHOOTING (GENERATOR)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 17 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our company's business office or service plant.
TABLE 17. GENERATOR TROUBLESHOOTING
SYMPTOM | POSSIBLE PROBLEM | SOLUTION | 
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No Voltage Output  | AC Voltmeter defective?  | Check output voltage using a voltmeter.  | 
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  | Is wiring connection loose?  | Check wiring and repair.  | 
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  | Is AVR defective?  | Replace if necessary.  | 
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  | Defective Rotating Rectifier?  | Check and replace.  | 
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  | Defective Exciter Field?  | Check for 17.3 ohms across J & K on CN1  | 
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Low Voltage Output  | Is engine speed correct?  | Turn engine throttle lever to "High".  | 
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  | Is wiring connections loose?  | Check wiring and repair.  | 
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  | Defective AVR?  | Replace if necessary.  | 
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High Voltage Output  | Is wiring connections loose?  | Check wiring and repair.  | 
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  | Defective AVR?  | Replace if necessary.  | 
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Circuit Breaker Tripped  | Short Circuit in load?  | Check load and repair.  | 
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  | Over current?  | Confirm load requirements and reduce.  | 
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  | Defective circuit breaker?  | Check and replace.  | 
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  | Over current Relay actuated?  | Confirm load requirement and replace.  | 
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