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20EORZ
Kohler 20EORZ Service
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TP-6073
4/06
62
Section
10
Wiring
Diagrams
10.1
Remote
Start
Panel
Start
P
P
K1
70
47
43
N
Gen.
ON
light
Remote
switch
P3-5
P3-6
P3-1
P2-3
P2-7
P2-8
P2-9
K2
P1-14
47
P2-4
43
P2-5
P2-6
N
P1-9
N
+-
-
Relay
circuit
board
Local
switch
Violet
Black
Y
ellow/
Red
Grey/
Black
Start
Stop
Stop
10-amp
fuse
P3-4
J3-4
J3-5
J3-1
J3-6
TP-5588-7
10.2
Remote
Start
and
T
wo
-Meter
Panel
P3-2
J3-2
Start
P
P
7C
K1
70
47
43
N
Oil
pressure
gauge
Water
temp.
gauge
Gen.
ON
light
Remote
switch
5
P3-5
P3-6
P3-1
P3-3
P2-3
P2-7
P2-8
P2-9
P4-2
P4-3
K2
P1-14
47
P2-4
43
P2-5
P2-6
N
P1-9
N
+-
-
Relay
circuit
board
Local
switch
Violet
Ta
n
Black
Y
ellow/
Red
Grey/
Black
L.
Blue
Start
Stop
Stop
10-amp
fuse
P3-4
W.
T.
sender
O.P
.
sender
J3-4
J3-5
J3-6
J3-1
J3-3
TP-5588-7
61
63
Table of Contents
Table of Contents
3
Safety Precautions and Instructions
5
Introduction
11
Service Assistance
11
Section 1 Specifications
13
Service Views
13
Engine Specifications
15
Generator Specifications
16
Section 2 Scheduled Maintenance
17
General Maintenance
17
Lubrication System
18
Battery Charging
18
Belt Tension
19
Battery
19
Storage Procedure
20
Lubricating System
20
Cooling System
20
Fuel System
20
Exterior
20
Battery
20
Section 3 Intake and Exhaust System
21
Air Cleaner Service
21
Exhaust System Inspection
21
Section 4 Fuel System
23
Fuel Specifications
23
Fuel Filter
23
Fuel System Bleeding
24
Governor
25
Section 5 Cooling System
27
General
27
Cooling System
27
Coolant Level Check
27
Cooling System Component Inspection
27
Procedure to Drain the Cooling System
28
Procedure to Flush and Clean the Cooling System
28
Procedure to Refill the Cooling System
29
Section 6 Controller Troubleshooting
31
Controller Sequence of Operation
31
Start
31
Run
31
Stop
32
Automatic Safety Shutdowns
32
Controller Circuit Board
33
Troubleshooting Flowchart
34
Section 7 Generator Troubleshooting
39
General
39
General Troubleshooting
39
Separate Excitation
40
Powerboostt IIIE Voltage Regulators (7.5 and 10 Kw Models)
41
Powerboostt IIIE Voltage Regulator Test
41
Powerboostt V Voltage Regulators (15 and 20 Kw Models)
42
Powerboostt V Voltage Regulator Test
42
Voltage Regulator Adjustment
43
Brushes (EOR/EFOR Models)
45
Exciter Field (EORZ and EFORZ Models)
46
Exciter Armature (EORZ and EFORZ Models)
47
Rectifier Module (EORZ and EFORZ Models)
47
Rotor
48
Stator
49
Section 8 Component Troubleshooting
51
Engine/Generator Components
51
Remote Start Panels (Optional)
53
Sender Tests
53
Panel Tests
53
Section 9 Generator Disassembly/Reassembly
55
Disassembly
55
Reassembly
58
Section 10 Wiring Diagrams
61
Remote Start Panel
62
Remote Start and Two-Meter Panel
62
Remote Start and Four-Meter Panel
63
10EOR & 6/9EFOR with Brushes, Schematic Wiring Diagram
64
10EOR & 6/9EFOR with Brushes, Point-To-Point Wiring Diagram
65
10EORZ & 6/9EFORZ with Exciter, Schematic Wiring Diagram
66
10EORZ & 6/9EFORZ with Exciter, Point-To-Point Wiring Diagram
67
15/20EOR & 12.5/16.5EFOR with Brushes, Schematic Wiring Diagram
68
15/20EOR & 12.5/16.5EFOR W/ Brushes, Point-To-Point Wiring Diagram
69
15/20EORZ & 12.5/16.5EFORZ W/Exciter, Schematic Wiring Diagram
70
15/20EORZ & 12.5/16.5EFORZ W/Exciter, Point-To-Point Wiring Diagram
71
Four-Lead Reconnection
72
Twelve-Lead Reconnection
73
Appendix A Abbreviations
75
Appendix B Common Hardware Application Guidelines
77
Appendix C General Torque Specifications
78
Appendix D Common Hardware Identification
79
Appendix E Common Hardware List
80
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Kohler 20EORZ Specifications
General
Brand
Kohler
Model
20EORZ
Category
Portable Generator
Language
English
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