Specifications

PAGE 44 — DCA-10SPX3 A.C. GENERATOR— PARTS & OPERATION MANUAL — REV. #1 (03/31/01)
DCA-10SPX3 — TROUBLESHOOTING (GENERATOR/ENGINE)
TABLE 12. ENGINE & GENERATOR TROUBLESHOOTING
SYMPTOM POSSIBLE PROBLEM SOLUTION
Engine fails to start and starter does
not rotate.
Dead Battery? Replace Battery.
Defective Starter Switch? Replace Switch.
Defective Starter? Replace Starter.
Fuse F5 Burned Out? Replace Fuse.
Engine fails to start and starter
rotates.
Broken Pre-Heat Circuit?` Check Pre-Heat Circuit.
No Fuel? Add Fuel.
Defective Wiring? Check Wiring.
Engine starts and engine remains at
low speed.
Compression Leak? Check/repair engine.
Air in the fuel system? Repair or Bleed.
Clogged Fuel Strainer? Clean or Replace.
Clogged Air Cleaner? Clean or Replace.
Disconnected Wiring? Check and Repair Wiring.
Engine starts and engine speed rises
and no voltage is present in AC
power source.
No Voltage Present in AC Power
source
Replace Rectifier (RE1).
Defective Rotor? Replace Rotor.
Defective Automatic Voltage
Regulator?
Replace AVR.
Disconnected Wiring? Check and Repair Wiring.
Layer Short-Circuit in armature
winding?
Replace Armature.
Engine starts and engine speed rises
but AC power voltage is too low (or
too high) or cannot be used.
Defective Circuit Breaker (Protector)? Replace Circuit Breaker (Protector).
Layer Short-Circuit, Broken Wires In
Armature Winding?
Repair or Replace Armature.
Voltage Regulator turned too low? Adjust Voltage Regulator up.
Engine starts and engine speed rises
but battery discharges excessively.
Defective Engine Regulator? Replace Regulator.
Defective Wiring? Repair or Replace Wiring.
Engine starts and engine speed rises
and engine seems overloaded.
Defective Alternator? Repair or Replace Alternator.
Damaged Alternator Bearing? Replace Alternator Bearings.
Practically all breakdowns can be prevented by proper
handling and maintenance inspections, but in the event of a
breakdown, please take a remedial action following the
diagnosis based on the Generator Troubleshooting (Table 12)
information shown below and on the proceeding page. If the
problem cannot be remedied, consult our company's
business office or service plant.
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