Doosan L6-60HA-T4F, Operation And Maintenance Manual

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Operating & Maintenance Manual Troubleshooting
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Won’t START/RUN cont’d Engine water temperature too high
Engine oil pressure too low
Loose wire connection
Defective switches
Malfunctioning relay
Engine malfunctioning
Engine Temperature Shutdown Loose or broken engine fan belt
Ambient temperature too high
Dirty operating conditions
Dirty radiator
Electrical output overload
Engine Oil Pressure Shutdown Low oil level
Out of level > 15 degrees
Wrong lube oil
Engine malfunctioning
Defective switch
Main Circuit Breaker - cannot be
reset Loose or intermittent wire connection(s)
Incorrect electrical connection
Defective main breaker
No Alternator Voltage Output Main circuit breaker OFF
Loose or intermittent wire
Electrical output overload
Low engine power
Incorrect electrical connection
Defective alternator diode bridge assembly
Defective alternator
High/Low Alternator Voltage Output Incorrect electrical connection
Incorrect engine speed adjustment
Unstable engine speed (oscillation)
Unstable electrical requirements
Low engine power
Loose or intermittent wire connection(s)
Defective alternator diode bridge assembly
High/Low Alternator Frequency
Output Incorrect engine speed adjustment
Incorrect electrical connection
Low engine power
Unstable engine speed (oscillation)
Unstable electrical connection
Electrical output overload
Loose or intermittent wire connections
Fluctuating Alternator Frequency/
Voltage and or Oscillating Engine Unstable electrical requirements
Unstable engine speed (oscillation)
Incorrect engine speed adjustment
Low engine power
Electrical output overload
Clogged air/fuel filter(s)
Loose or intermittent wire connection(s)
Incorrect electrical connection
Main circuit breaker(s) OFF
Defective Generator