Table of Contents
SAFETY | INSIDE FRONT COVER | |
SECTION 1: |
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GENERATOR FUNDAMENTALS | ||
MAGNETISM | 3 | |
ELECTROMAGNETIC FIELDS | 3 | |
ELECTROMAGNETIC INDUCTION | 3 | |
A SIMPLE AC GENERATOR | 4 | |
A MORE SOPHISTICATED AC GENERATOR | 4 | |
FIELD BOOST | 6 | |
GENERATOR AC CONNECTION SYSTEM | 6 | |
SECTION 2: |
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MAJOR GENERATOR COMPONENTS | ||
ROTOR ASSEMBLY | 8 | |
STATOR ASSEMBLY | 8 | |
BRUSH HOLDER | 9 | |
BATTERY CHARGE COMPONENTS | 9 | |
EXCITATION CIRCUIT COMPONENTS | 9 | |
VOLTAGE REGULATOR | 10 | |
CONTROL PANEL |
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COMPONENT IDENTIFICATION | 11 | |
SECTION 3: |
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INSULATION RESISTANCE TESTS | ||
EFFECTS OF DIRT AND MOISTURE | 12 | |
INSULATION RESISTANCE TESTERS | 12 | |
DRYING THE GENERATOR | 12 | |
CLEANING THE GENERATOR | 12 | |
STATOR INSULATION RESISTANCE | 13 | |
TESTING ROTOR INSULATION | 14 | |
THE MEGOHMMETER | 14 | |
SECTION 4: |
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MEASURING ELECTRICITY | ||
METERS | 15 | |
THE VOM | 15 | |
MEASURING AC VOLTAGE | 15 | |
MEASURING DC VOLTAGE | 15 | |
MEASURING AC FREQUENCY | 16 | |
MEASURING CURRENT | 16 | |
MEASURING RESISTANCE | 16 | |
ELECTRICAL UNITS | 17 | |
OHM’S LAW | 17 | |
SECTION 5: |
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ENGINE DC CONTROL SYSTEM | ||
INTRODUCTION | 18 | |
OPERATIONAL ANALYSIS | ||
ENGINE CONTROLLER CIRCUIT BOARD | 24 | |
BATTERY | 24 | |
14 AMP FUSE | 26 | |
26 | ||
26 | ||
STARTER CONTACTOR & MOTOR | 26 |
ENGINE GOVERNOR | 27 |
FUEL INJECTION PUMP | 27 |
FUEL NOZZLES/INJECTORS | 27 |
GLOW PLUGS | 27 |
ENGINE PROTECTIVE DEVICES | 28 |
LOW OIL PRESSURE SWITCH | 28 |
HIGH COOLANT TEMPERATURE SWITCH | 28 |
OVERSPEED PROTECTION | 28 |
SECTION 6: |
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TROUBLESHOOTING FLOWCHARTS | |
IF PROBLEM INVOLVES AC OUTPUT | 29 |
PROBLEM 1 - |
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VOLTAGE & FREQUENCY ARE BOTH |
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HIGH OR LOW | 29 |
PROBLEM 2 - |
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GENERATOR PRODUCES ZERO VOLTAGE OR |
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RESIDUAL VOLTAGE | |
PROBLEM 3 - |
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NO BATTERY CHARGE OUTPUT | 31 |
PROBLEM 4 - |
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EXCESSIVE VOLTAGE/FREQUENCY DROOP |
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WHEN LOAD IS APPLIED | 32 |
PROBLEM 5 - |
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PRIMING FUNCTION DOES NOT WORK | 32 |
PROBLEM 6 - |
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ENGINE WILL NOT CRANK | 33 |
PROBLEM 7 - |
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ENGINE CRANKS BUT WILL NOT START / |
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RUNS HARD | 34 |
PROBLEM 8 - |
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ENGINE STARTS THEN SHUTS DOWN | 35 |
PROBLEM 9 - |
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14 AMP (F1) FUSE BLOWING | 36 |
SECTION 7: |
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DIAGNOSTIC TESTS | |
INTRODUCTION | 37 |
TEST 1 - |
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Check | 37 |
TEST 2 - |
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Check Engine Governor | |
TEST 3 - |
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Test Excitation Circuit Breaker | 38 |
TEST 4 - |
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Fixed Excitation Test/Rotor Amp Draw | |
TEST 5 - |
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Wire Continuity | 39 |
TEST 6 - |
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Check Field Boost | |
TEST 7 - |
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Test Stator DPE Winding | |
TEST 8 - |
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Check Sensing Leads/Power Windings | 41 |
TEST 9 - |
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Check Brush Leads |
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