page 46 — DCa25Usi 60 hz generaTor • operaTion anD parTs manUal — rev. #3 (07/19/11)
trOubleshOOting (generatOr)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a
breakdown, use Table 19 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our
company’s business office or service plant.
Table 19. generator Troubleshooting
symptom
possible problem
solution
No Voltage Output
AC Voltmeter defective?
Check output voltage using a voltmeter.
Is wiring connection loose?
Check wiring and repair.
Is AVR defective?
Replace if necessary.
Defective Rotating Rectifier?
Check and replace.
Defective Exciter Field?
Check for approximately 17.3 ohms across J & K on CN1
Low Voltage Output
Is engine speed correct?
Turn engine throttle lever to “High”.
Is wiring connections loose?
Check wiring and repair.
Defective AVR?
Replace if necessary.
High Voltage Output
Is wiring connections loose?
Check wiring and repair.
Defective AVR?
Replace if necessary.
Circuit Breaker Tripped
Short Circuit in load?
Check load and repair.
Over current?
Confirm load requirements and reduce.
Defective circuit breaker?
Check and replace.
Over current Relay actuated? Confirm load requirement and replace.
Summary of Contents for DCA5USI
Page 47: ...DCA25usi 60 hz Generator operation and parts manual rev 3 07 19 11 page 47 notes...
Page 50: ...page 50 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 GENERATOR ASSY...
Page 52: ...page 52 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 control box ASSY...
Page 54: ...page 54 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 control box ASSY...
Page 62: ...page 62 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 BATTERY ASSY...
Page 64: ...page 64 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 Muffler Assy...
Page 66: ...page 66 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 FUEL TANK ASSY...
Page 68: ...page 68 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 ENCLOSURE ASSY...
Page 74: ...page 74 DCA25Usi 60 hz Generator operation and parts manual rev 3 07 19 11 RUBBER SEALS ASSY...
Page 79: ...DCA25usi 60 hz Generator operation and parts manual rev 3 07 19 11 page 79 notes...