Kohler 20EFOZ Service Manual

TP-6071 3/00 Table of Contents
Table of Contents
Safety Precautions and Instructions I.........
Introduction i...............................
Service Assistance ii.........................
Service Information ii..............................
Product Information ii..............................
Section 1 Specifications 1....................
1.1 General 1..................................
1.2 Engine 2...................................
1.3 Fuel 3......................................
1.4 Cooling 3...................................
1.5 Generator, 4 Lead 4.........................
1.6 Generator, 12 Lead 4........................
1.7 Service Views 5.............................
Section 2 Scheduled Maintenance 7...........
2.1 General 7..................................
2.2 Lubrication System 8.........................
Section 3 Intake and Exhaust System 9........
3.1 Air Intake Silencer 9.........................
3.2 Exhaust System Inspection 9..................
3.3 Servicing Mixing Elbow 10.....................
3.4 Turbocharger 10..............................
Section 4 Fuel System 11.....................
4.1 General 11..................................
4.2 Fuel Filter 11.................................
4.3 Bleeding 11..................................
4.4 Fuel Pump 12................................
4.5 Governor 13.................................
Section 5 Cooling System 15..................
5.1 General 15..................................
5.2 Closed Heat Exchanger 16.....................
5.3 Check and Fill Coolant 16.....................
5.4 Flush and Clean Cooling System 16.............
5.5 Pressure Cap 16.............................
5.6 Impeller Inspection and Replacement 17.........
5.7 Siphon Break 18..............................
Section 6 Controller Troubleshooting 19........
6.1 Controller 19.................................
6.2 Controller Sequence of Operation 20............
6.2.1 Start 20.............................
6.2.2 Run 20..............................
6.2.3 Stop 20..............................
6.3 Engine Safety Shutdown Switches 22...........
6.3.1 Low Oil Pressure (LOP)
Shutdown Switch 22..................
6.3.2 High Water Temperature (HWT) and
High Exhaust Temperature (HET)
Shutdown Switch 22..................
6.3.3 Overspeed Safety Shutdown (SDR) 23..
6.4 Controller Circuit Board 23.....................
6.5 Troubleshooting Flow Chart 24.................
Section 7 Generator Troubleshooting 29........
7.1 General 29..................................
7.2 Generator Troubleshooting 29..................
7.3 Separate Excitation 29........................
7.4 PowerBoostä V Voltage Regulators 30..........
7.5 Voltage Regulator Test 31.....................
7.6 Voltage Regulator Adjustment 32...............
7.7 Exciter Field 33...............................
7.8 Exciter Armature 34...........................
7.9 Rectifier Module 35...........................
7.10 Rotor 35.....................................
7.11 Stator 36....................................
Section 8 Component Troubleshooting 39......
8.1 General 39..................................
8.2 Remote Panels (Optional) 41...................
Section 9 Generator
Disassembly/Reassembly 43...................
9.1 Disassembly 43..............................
9.2 Reassembly 46...............................
Section 10 Wiring Diagrams 49................
10.1 Manual Marine (Ship-to-Shore) 2 Wire and 3 Wire
Transfer Switches 50..........................
10.2 Manual Marine (Ship-to-Shore) 4 Wire Transfer
Switch 51....................................
10.3 Remote Start Panel 52........................
10.4 Remote Start and Two-Meter Panel 52..........
10.5 Remote Start and Four-Meter Panel 53..........
10.6 Wiring Diagram 4-Lead 55.....................
10.7 Wiring Diagram 12-Lead 56....................
Appendix A Abbreviations A-1................
Appendix B Common Hardware
Application Guidelines A-3....................
Appendix C General Torque
Specifications A-4............................
Appendix D Common Hardware
Identification A-5.............................
Appendix E Common Hardware List A-6.......

Kohler 20EFOZ Specifications

General

Brand	Kohler
Model	20EFOZ
Category	Portable Generator
Language	English