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TP-5606 6/023-12 Scheduled Maintenance

1. Upper Radiator Hose

2. Hose Clamp

3. Radiator Pressure Cap

4. Radiator Assembly

5. Lower Radiator Hose

6. Radiator Mounting Bracket

7. Vibro Mount

8. Radiator Bracket

9. Engine Mounting Bracket

10. Engine Mounting Bracket

11. Right Belt Guard

12. Top Belt Guard

13. Left Belt Guard

14. Fan Shroud

15. Fan

16. Gasket

17. Thermostat Housing

CM-250000

To Engine

Water

Pump

Figure 3-11. In-Line Radiator Cooling System Components

Table of Contents3
Subject Page4
Safety Precautions and Instructions5
Routine Service Parts10
Section 1. Specifications11
Introduction11
- General Specifications11
- Engine12
- Generator13
- Generator Models 15/20 Kw13
Section 2. Operation21
Prestart Checklist21
- Exercising the Generator21
Controller (Single Phase)22
Controller (Three Phase)22
Preheat Feature23
Starting Procedure23
Stopping Procedure23
Fault Shutdowns24
- Low Oil Pressure Shutdown Switch24
- High Water Temperature Shutdown Switch24
Circuit Protection25
Accessories26
Remote Panels (Optional)27
Section 3. Scheduled Maintenance31
General31
Lubrication System33
- Oil Selection33
- Oil Check33
- Oil Change34
- Oil Filter35
Fuel System36
- Specification36
- Fuel Filter36
- Bleeding the Fuel System37
- Fuel Solenoid38
Air Cleaner Service39
Governor40
Cooling System41
- Cooling System Description41
Cooling System Servicing44
- Clean Radiator Fins/Inspect Hoses44
- Change Coolant44
- Check Coolant Level44
Battery Charging45
- Belt Tension45
Battery46
- Cleaning47
- Checking Electrolyte Level47
- Checking Specific Gravity48
Engine Cylinder Head49
- Valve Clearance49
- Head Bolt Torque49
Wattage Requirements50
Generator Service51
- General51
Storage Procedure51
Section 4. General Troubleshooting53
Section 5. Controller Troubleshooting69
Single-Phase Generator Sequence of Operation69
- Starting69
- Running70
- Stopping71
- Automatic Safety Shutdowns72
Three-Phase Generator Sequence of Operation73
- Starting73
- Running74
- Stopping75
- Automatic Safety Shutdowns76
Section 6. Generator/Controller Troubleshooting77
Controller Circuit Board77
Section 7. Component Testing and Adjustment83
Separate Excitation83
Powerboostä IIIE Voltage Regulator86
- Powerboostä IIIE Voltage Regulator Test Procedure87
- Powerboostä IIIE Voltage Regulator Adjustment88
Powerboostä V Voltage Regulator90
- Powerboostä V Voltage Regulator Test Procedure91
- Powerboostä V Voltage Regulator Adjustment92
- Adjustment Procedure93
Controller Circuit Board94
Engine/Generator Components96
Rotor100
- Single-Phase Rotor Tests100
- Three-Phase Rotor Tests100
Stator101
- Checking Single-Phase Stator Continuity and Resistance101
- Checking Three-Phase Stator Continuity and Resistance103
Exciter Field104
Exciter Armature105
Fuel Solenoid107
Remote Start Panels (Optional)108
- Sender Tests108
- Panel Tests108
Section 8. Disassembly/Reassembly111
Single-Phase Generator Disassembly111
Single-Phase Generator Brushes115
Single-Phase Generator Slip Ring115
Single-Phase Generator Reassembly116
Three-Phase Generator Disassembly117
Reassembly121
Section 9. Wiring Diagrams123
- Twelve-Lead (Three-Phase) Generator Sets127
Appendix A Abbreviations131
Appendix B. Common Hardware Applications133
Guidelines133
Appendix C General Torque Specifications134
Appendix D Common Hardware Identification135
Appendix E Common Hardware List136

Brand	Kohler
Model	20CCOZ
Category	Inverter
Language	English

Kohler 20CCOZ Service Manual

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