5N5040 EXCITER AND HEAT SINK AS TYPE 1. PERMANENT MAGNET & SELF EXCITED 689 FRAME & LARGER 5N5027, 5N5030-PAGE 412 PART OF GENERATORS SR4

GENERATORS

GENERATOR GP

0. 5N-5040 EXCITER &
1. 9Y-7205 HEAT SINK
2. 4W-1636 EXCITER &
3. 4P-6007 HEAT SINK
4. 7C-2527 EXCITER &
5. 5N-9421 EXCITER &
6. 7C-2527 EXCITER &
7. 5N-9421 EXCITER &
8. 7W-9967 KIT-SPACE
9. 7W-9986 KIT-SPACE
0. INFORMATION

GENERATOR SR4 GENERATOR 1WF
GENERATORS FOR 3500 SERIES ENGINES 1WF00001-UP SEBP1545 SR4 1WF (1988)

GENERATORS

GENERATOR GP

9Y-9422 GENERATOR GP

5N-5040 EXCITER & HEAT SINK AS

9Y-7205 HEAT SINK AS

4W-1636 EXCITER & HEAT SINK AS

4P-6007 HEAT SINK AS

#SEBP15450590

5N-5040: EXCITER & HEAT SINK AS

EXCITER & HEAT SINK AS

5N5040 EXCITER AND HEAT SINK AS
TYPE 1. PERMANENT MAGNET & SELF EXCITED 689 FRAME & LARGER
5N5027, 5N5030-PAGE 412
PART OF GENERATORS

c178843 SEBP1545

5N5040 EXCITER & HEAT SINK AS Parts scheme

For full view, you need register

Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5N-5027 Y	[1]	HEAT SINK AS-POSITIVE
2.	5N-5030 Y	[1]	HEAT SINK AS-NEGATIVE
3.	5N-4995	[1]	CORE AS-EXCITER
4.	5N-5043	[2]	VARISTOR AS
	Y		SEPARATE ILLUSTRATION

#SEBP15450591

9Y-7205: HEAT SINK AS

HEAT SINK AS

9Y7205 HEAT SINK AS
PART OF 7C1614, 7C1613, 9Y2934, 9Y2935, 9Y3872, 9Y3873, 4P3015,
4P2246, 7C2623, 7C2618 GENERATORS
FIELD REPLACEMENT ORDER 4P6007-PAGE 403.01

c553438 SEBP1545

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7E-0127	[1]	RESISTOR AS
2.	9Y-9412	[1]	VARISTOR
3.	4P-6008	[3]	RECTIFIER

#SEBP15450592

4W-1636: EXCITER & HEAT SINK AS

EXCITER & HEAT SINK AS

4W1636 EXCITER AND HEAT SINK AS
SELF EXCITED 685 FRAME & SMALLER. 5N5027, 5N5030-PAGE 412
PART OF 7C1603, 7C1605, 7C1607, 7C1609, 5N7245, 5N7248,
5N7240, 5N7244, 7W8695, 7W8696, 7C3539 GENERATORS

c310890 SEBP1545

4W1636 EXCITER & HEAT SINK AS Parts scheme

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5N-5027 Y	[1]	HEAT SINK AS-POSITIVE
2.	5N-5030 Y	[1]	HEAT SINK AS-NEGATIVE
3.	4W-1635	[1]	CORE AS-EXCITER
4.	5N-5043	[2]	VARISTOR AS
	Y		SEPARATE ILLUSTRATION

#SEBP15450593

4P-6007: HEAT SINK AS

HEAT SINK AS

4P6007 HEAT SINK AS
PART OF 4P2246, 4P7270, 4P7272, 4P3015, 4P4571, 7C2620, 7C1614, 7C2623,
9Y1408, 7C1613, 7C2618, 7C4121, 6I4829, 4P2246, 9Y2934, 9Y3872, 9Y2935,
9Y3873, 6I4835, 6I4827 GENERATORS. FIELD REPLACEMENT FOR 9Y7205-PAGE 403

c526081 SEBP1545

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7E-0127	[1]	RESISTOR AS
2.	4P-6009	[2]	VARISTOR
3.	4P-6008	[3]	RECTIFIER

#SEBP15450594

7C-2527: EXCITER & HEAT SINK AS

EXCITER & HEAT SINK AS

7C2527 EXCITER & HEAT SINK AS
TYPE 1. 5N5027, 5N5030-PAGE 412
PART OF 7C1603, 7C1605, 7C1607, 7C1609, 7C3537 GENERATORS

c408736 SEBP1545

7C2527 EXCITER & HEAT SINK AS Parts scheme

For full view, you need register

Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5N-5027 Y	[1]	HEAT SINK AS-POSITIVE
2.	5N-5030 Y	[1]	HEAT SINK AS-NEGATIVE
3.	4W-1635	[1]	CORE AS-EXCITER
4.	5N-5043	[2]	VARISTOR AS
	Y		SEPARATE ILLUSTRATION

#SEBP15450595

5N-9421: EXCITER & HEAT SINK AS

EXCITER & HEAT SINK AS

5N9421 EXCITER AND HEAT SINK AS
TYPE 1. 5N5027, 5N5030-PAGE 412
PART OF GENERATORS

c462136 SEBP1545

5N9421 EXCITER & HEAT SINK AS Parts scheme

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5N-5027 Y	[1]	HEAT SINK AS-POSITIVE
2.	5N-5030 Y	[1]	HEAT SINK AS-NEGATIVE
3.	5N-9424	[1]	CORE AS-EXCITER
4.	5N-5043	[2]	VARISTOR AS
5.	5P-4116	[7]	WASHER
6.	4M-6425	[4]	BOLT
7.	4B-3903	[3]	BOLT
	Y		SEPARATE ILLUSTRATION

#SEBP15450596

7C-2527: EXCITER & HEAT SINK AS

EXCITER & HEAT SINK AS

7C2527 EXCITER & HEAT SINK AS
TYPE 2. 9Y7174, 9Y7175-PAGE 413
PART OF 7C1603, 7C1605, 7C1607, 7C1609, 7C3537,
7C3539, 9Y9421 GENERATORS

c470767 SEBP1545

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9Y-7175 YC	[1]	HEAT SINK AS-POSITIVE
2.	9Y-7174 YC	[1]	HEAT SINK AS-NEGATIVE
3.	4W-1635	[1]	CORE AS-EXCITER
4.	5N-5043	[2]	VARISTOR AS
	C		CHANGE FROM PREVIOUS TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP15450597

5N-9421: EXCITER & HEAT SINK AS

EXCITER & HEAT SINK AS

5N9421 EXCITER & HEAT SINK AS
TYPE 2. 9Y7174, 9Y7175-PAGE 413
PART OF GENERATORS

c523554 SEBP1545

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9Y-7175 Y	[1]	HEAT SINK AS-POSITIVE
2.	9Y-7174 Y	[1]	HEAT SINK AS-NEGATIVE
3.	5N-9424	[1]	CORE AS-EXCITER
4.	5N-5043	[2]	VARISTOR AS
5.	5P-4116	[7]	WASHER
6.	3N-1645	[4]	SCREW-FORMING
7.	4B-3903	[3]	BOLT
8.	4P-5853	[1]	HUB-HOLDER
	Y		SEPARATE ILLUSTRATION

#SEBP15450598

7W-9967: KIT-SPACE HEATER

KIT-SPACE HEATER

7W9967 KIT-SPACE HEATER
S/N 5RA1-UP,5SA1-UP,5TA1-UP,5TD1-UP,5UA1-UP,5VA1-UP,6NA1-UP,`
6PA1-UP,1WF1-UP. PART OF 7W8674, 7W8676, 7W8678, 7W8682, 7W8698,
7W8700, 7C1606, 7C1608, 7C1610, 7C3538, 7C3540 GENERATORS
ALSO AN ATTACHMENT

c355608 SEBP1545

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7W-9098	[2]	HEATER-SPACE
2.	7W-8876	[4]	BRACKET-SPACE
3.	6L-7575	[1]	TERMINAL-STRIP
4.	7W-9968	[1]	LEAD AS
5.	7W-8890	[1]	BRACKET-TERMINAL
6.	3N-8763	[1]	STRIP-MARKER
7.	6L-7008	[4]	STRAP-CABLE
8.	5P-4115	[8]	WASHER
9.	4M-5281	[8]	BOLT
10.	2D-6235	[4]	LOCKNUT
11.	030-1193	[4]	SCREW-MACHINE
12.	7K-3434	[2]	SCREW-TAPPING
13.	3L-8187	[2]	LOCKWASHER
14.	3N-8764	[1]	FILM-CONNECTION LABEL
15.	4M-0061	[2]	BOLT
16.	5P-4116	[2]	WASHER

#SEBP15450599

7W-9986: KIT-SPACE HEATER

KIT-SPACE HEATER

7W9986 KIT-SPACE HEATER
S/N 5YA1-UP,5ZA1-UP,6AA1-UP,6LA1-UP,6SA1-UP
PART OF 7W8686, 7W8688, 7W8691, 7W8693, 7W8702, 7C1612,
7C1614, 7C3542, 6I4829, 6I4833 GENERATORS
ALSO AN ATTACHMENT

c355614 SEBP1545

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Parts for your SR4 GENERATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7W-9101	[2]	HEATER-SPACE
2.	7W-8876	[4]	BRACKET-SPACE
3.	6L-7575	[1]	TERMINAL-STRIP
4.	7W-9987	[1]	LEAD AS
5.	7W-8890	[1]	BRACKET-TERMINAL
6.	3N-8763	[1]	STRIP-MARKER
7.	6L-7008	[4]	STRAP-CABLE
8.	5P-4115	[8]	WASHER
9.	4M-5281	[8]	BOLT
10.	2D-6235	[4]	LOCKNUT
11.	030-1193	[4]	SCREW-MACHINE
12.	7K-3434	[2]	SCREW-TAPPING
13.	3L-8187	[2]	LOCKWASHER
14.	3N-8764	[1]	FILM-CONNECTION LABEL
15.	4M-0061	[2]	BOLT
16.	5P-4116	[2]	WASHER

Information:

GENERATORS

GENERATOR GP

General Service Information

Identification
CONTROL PANEL SR4 GENERATOR MOUNTED

Abbreviations
CONTROL PANEL SR4 GENERATOR MOUNTED

Symbols
CONTROL PANEL SR4 GENERATOR MOUNTED

How To Read Control Panel DC Schematics
CONTROL PANEL SR4 GENERATOR MOUNTED

Location Of Components
CONTROL PANEL SR4 GENERATOR MOUNTED

Standard Components
CONTROL PANEL SR4 GENERATOR MOUNTED

Optional Components
CONTROL PANEL SR4 GENERATOR MOUNTED

Energize To Run Engine System
CONTROL PANEL SR4 GENERATOR MOUNTED

Energize To Shut Off Engine System
CONTROL PANEL SR4 GENERATOR MOUNTED

Latching Fuel Solenoid System
CONTROL PANEL SR4 GENERATOR MOUNTED

Point To Point Wiring Diagrams
CONTROL PANEL SR4 GENERATOR MOUNTED

D.C. Schematic (JIC)
CONTROL PANEL SR4 GENERATOR MOUNTED

Wiring Diagram (Instrument Panel)
CONTROL PANEL SR4 GENERATOR MOUNTED

Wiring Diagram (Subpan Side One)
CONTROL PANEL SR4 GENERATOR MOUNTED

Wiring Diagram (Subpan Side Two)
CONTROL PANEL SR4 GENERATOR MOUNTED

Control Panel Wiring Harness
CONTROL PANEL SR4 GENERATOR MOUNTED

Customer/Contactor Wiring
CONTROL PANEL SR4 GENERATOR MOUNTED

Standby Generator Wiring Diagram
CONTROL PANEL SR4 GENERATOR MOUNTED

Identification
ELECTRONIC MODULAR CONTROL PANEL (SR-4 GENERATOR MOUNTED)

Location Of Components
ELECTRONIC MODULAR CONTROL PANEL (SR-4 GENERATOR MOUNTED)

Control Panel Operation
ELECTRONIC MODULAR CONTROL PANEL (SR-4 GENERATOR MOUNTED)

Optional Modules
ELECTRONIC MODULAR CONTROL PANEL (SR-4 GENERATOR MOUNTED)

Troubleshooting
ELECTRONIC MODULAR CONTROL PANEL (SR-4 GENERATOR MOUNTED)

Service Procedures
ELECTRONIC MODULAR CONTROL PANEL (SR-4 GENERATOR MOUNTED)

Identification
SR4 GENERATOR MOUNTED CONTROL PANEL

Abbreviations & Symbols
SR4 GENERATOR MOUNTED CONTROL PANEL

How To Read Control Panel DC Schematics
SR4 GENERATOR MOUNTED CONTROL PANEL

Components
SR4 GENERATOR MOUNTED CONTROL PANEL

Introduction
SR4 GENERATOR MOUNTED CONTROL PANEL

Automatic Start/Stop Control Panel
SR4 GENERATOR MOUNTED CONTROL PANEL

Manual Start/Stop Control Panel
SR4 GENERATOR MOUNTED CONTROL PANEL

SRCV Generator
SRCV GENERATOR (SELF-REGULATED CONSTANT VOLTAGE)

SRCV Exciter
SRCV GENERATOR (SELF-REGULATED CONSTANT VOLTAGE)

Generator Rewind Data
SRSE GENERATOR (STATICALLY REGULATED STATICALLY EXCITED)

Operation
FLOOR-STANDING SWITCHGEAR

Automatic Start-Stop
FLOOR-STANDING SWITCHGEAR

Alternating Current Components Troubleshooting
FLOOR-STANDING SWITCHGEAR

Automatic Start-Stop Troubleshooting
FLOOR-STANDING SWITCHGEAR

Engine News

Use FT1555 Generator Rotor Removal Tool To Remove And Install Rotor Assembly
1982/01/20

Make Sure Generator Leads Do Not Move Against Frame
1982/09/22

Extend Exciter Stator Life In Humid, Salty Environments
1986/02/01

Bearing Information For SR 4 Generators
1990/08/01

New SR 4 Generator Rewind Data Available
1991/10/01

New Painting Procedure For SR4 Generators
1992/01/01

Proper Storage of Caterpillar Electric Set Generators{1404}
1994/01/01

Generator Maintenance Schedule Additions{4471,4450,1404}
1994/03/01

SR4 Generator Bearing Update{4471}
1994/07/01

Corrections To Service Manual Module, SENR5359, SR4B Generator Service Manual{4450}
1998/10/01

Special Instruction, REHS0345, "Generator Service Literature Index" Is Available {4450}
1998/11/01

New Maintenance Information For Generators{4450}
1998/12/01

Use 152-7143 Cable Assembly For Flash-Programming Generator Status Control Module{4450}
1999/02/01

Special Instruction, REHS0345-01, "Generator Service Literature Index" Is Available{4450}
1999/04/01

Updated Cat EPD Alternator Failure Report Template Is Now Available for Cat Generator Sets {1404}
2011/05/25

Special Instruction

Replacement Of 5N1848, 5N1849 And 5N1850 A1 Module Regulator Assemblies{4467}
Replacement Of 5N1848, 5N1849 And 5N1850 A1 Module Regulator Assemblies{4467}

Installing the VR3 Voltage Regulator On SR4 Generators{4467}
Installing the VR3 Voltage Regulator On SR4 Generators{4467}

Replacing SR4 Generator Fault Light{4450}
Replacing SR4 Generator Fault Light{4450}

Cooling Air Filter Installation For 680 And 800 Frame Generators{7263}
Cooling Air Filter Installation For 680 And 800 Frame Generators{7263}

Replacing SR4 Generator Pre-Alarm Light{1404}
Replacing SR4 Generator Pre-Alarm Light{1404}

Removal Of 4P-6407 Film From The Generator Set Control (GSC) Of The Electronic Modular Control Panel II (EMCP II){4490, 7451}
Removal Of 4P-6407 Film From The Generator Set Control (GSC) Of The Electronic Modular Control Panel II (EMCP II){4490, 7451}

Grounding Design Guide for Electric Power Generation Products {4450, 4459}
Grounding Design Guide for Electric Power Generation Products {4450, 4459}

Generator Bearing Service {4457}
Generator Bearing Service {4457}

Instructions for Installing AssetIQTM for Commercial Generator Set Systems on Caterpillar and non-Caterpillar Products {4450, 7490}
Instructions for Installing AssetIQ^TM for Commercial Generator Set Systems on Caterpillar and non-Caterpillar Products {4450, 7490}

Technical Information Bulletin

Generator Lead Connections Can Rub Against The Terminal Box Or Each Other
Generator Lead Connections Can Rub Against The Terminal Box Or Each Other

Specifications

General Information
SR4 and SR4B Electric Power Generation Rewind Data

Generator Identification
SR4 and SR4B Electric Power Generation Rewind Data

Component Views
SR4 and SR4B Electric Power Generation Rewind Data

Connection Diagrams for Exciter
SR4 and SR4B Electric Power Generation Rewind Data

Connection Diagrams for Main Stator and Main Rotor
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-0001 Generator through 5N-0025 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 102-2415 Generator through 108-3052 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 109-1595 Generator through 109-3774 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-0027 Generator through 5N-0050 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-0051 Generator through 5N-0075 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-0076 Generator through 5N-0090 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-0431 Generator through 5N-7207 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 111-8240 Generator through 112-1481 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 115-5101 Generator through 121-6860 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 121-6882 Generator through 123-3185 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 129-1502 Generator through 129-5034 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-7208 Generator through 5N-7232 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-7233 Generator through 5N-7309 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 130-0234 Generator through 130-7595 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-8891 Generator through 5N-8911 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 5N-9081 Generator through 5N-9432 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 4P-2236 Generator through 4P-9907 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 4W-0183 Generator through 4W-9669 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 7C-1601 Generator through 7C-9126 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 7E-0097 Generator through 7E-9695 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 7W-1877 Generator through 7W-8825 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 9Y-0157 Generator through 9Y-0389 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 9Y-0390 Generator through 9Y-0533 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 9Y-1408 Generator through 9Y-9422 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Terminology
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 144-0469 Generator through 144-0583 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 166-2651 Generator through 166-2689 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 166-2691 Generator through 166-7187 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 144-1811 Generator through 144-1951 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 147-9437 Generator through 147-9497 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 153-3081 Generator through 153-3098 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 167-1351 Generator through 167-1354 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 126-8022 Generator through 128-7424 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 136-6580 Generator through 136-6609 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 141-5534 Generator through 142-9900 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 144-1666 Generator through 144-1766 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 136-6610 Generator through 136-6641 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 144-1964 Generator through 144-2088 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 149-2447 Generator through 150-9152 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 158-6410 Generator through 163-8546 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 164-0975 Generator through 164-4946 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 173-7078 Generator through 194-6563 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 203-5749 Generator through 324-5120 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 6I-0053 Generator through 6I-4860 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Winding Data for 109-3776 Generator through 109-7874 Generator
SR4 and SR4B Electric Power Generation Rewind Data

Systems Operation

Systems Operation
ELECTRONIC MODULAR CONTROL PANEL (EMCP)

Systems Operation
SRSE GENERATOR (STATICALLY REGULATED STATICALLY EXCITED)

Systems Operation
SR4 GENERATOR

Generator Operation
SR4B Generators

General Information
SR4B Generators

Component Descriptions
SR4B Generators

Glossary
SR4B Generators

Main Revolving Field Connections (All Except SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Options (All Except SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Main Revolving Field Connections (SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Options (SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

General Information (All Except SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

General Information (SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Generator Wiring Diagrams (SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Main Stator and Voltage Sensing Lead Connections (All Except SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Main Stator and Voltage Sensing Lead Connections (SR4B for 3500 Engines)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Oil Field Generator Connections (SR4)
Connection Diagrams: SR4 and SR4B Generators, Voltage Regulators, Options

Glossary
SR4 Generator with VR3 or VR4 Voltage Regulator

General Information
SR4 Generator with VR3 or VR4 Voltage Regulator

Component Descriptions
SR4 Generator with VR3 or VR4 Voltage Regulator

Generator Operation
SR4 Generator with VR3 or VR4 Voltage Regulator

Testing and Adjusting

Testing And Adjusting
ELECTRONIC MODULAR CONTROL PANEL (EMCP)

Testing And Adjusting
SRSE GENERATOR (STATICALLY REGULATED STATICALLY EXCITED)

Testing And Adjusting
SR4 GENERATOR

General Information
SR4B Generators

Troubleshooting
SR4B Generators

Generator Set - Test
SR4 Generator with VR3 or VR4 Voltage Regulator

Varistor - Test
SR4 Generator with VR3 or VR4 Voltage Regulator

Rotating Rectifier - Test
SR4B Generators

Winding - Test
SR4B Generators

Resistor - Test
SR4 Generator with VR3 or VR4 Voltage Regulator

Exciter Field - Flash
SR4 Generator with VR3 or VR4 Voltage Regulator

Generator - Dry
SR4 Generator with VR3 or VR4 Voltage Regulator

Insulation - Test
SR4 Generator with VR3 or VR4 Voltage Regulator

General Information
SR4 Generator with VR3 or VR4 Voltage Regulator

Troubleshooting
SR4 Generator with VR3 or VR4 Voltage Regulator

Rotating Rectifier - Test
SR4 Generator with VR3 or VR4 Voltage Regulator

Disassembly and Assembly

Disassembly And Assembly
SRSE GENERATOR (STATICALLY REGULATED STATICALLY EXCITED)

Alignment Of Single-Bearing Generators
SRSE GENERATOR (STATICALLY REGULATED STATICALLY EXCITED)

SRCR Generators
SRCR GENERATOR

Generator Covers
SRCR GENERATOR

Generator Drive Assembly
SRCR GENERATOR

Rotating Field
SRCR GENERATOR

Bearing Retainer And Brush Yoke Assembly
SRCR GENERATOR

Alignment Of Single Bearing Generators (Typical)
SRCR GENERATOR

Control Panel
SR4 GENERATOR

Generator Bearing (Outside Bearing Type RFA)
SR4 GENERATOR

Generator Bearing (Inside Bearing Type RFA)
SR4 GENERATOR

Generator Removal
SR4 GENERATOR

Alignment Of Single-Bearing Generators (Typical)
SR4 GENERATOR

Rotor Assembly
SR4 GENERATOR

Stator Assembly
SR4 GENERATOR

Coupling - Install
SR4 Generator with VR3 or VR4 Voltage Regulator

Coupling - Remove
SR4B Generators

Bearing - Remove and Install
SR4B Generators

Rotor - Remove and Install
SR4B Generators

Generator - Align
SR4B Generators

Generator - Install
SR4B Generators

Generator - Remove
SR4B Generators

Exciter - Remove and Install
SR4B Generators

Bearing - Remove and Install
SR4 Generator with VR3 or VR4 Voltage Regulator

Exciter - Remove and Install
SR4 Generator with VR3 or VR4 Voltage Regulator

Generator - Remove
SR4 Generator with VR3 or VR4 Voltage Regulator

Generator - Install
SR4 Generator with VR3 or VR4 Voltage Regulator

Generator - Align
SR4 Generator with VR3 or VR4 Voltage Regulator

Rotor - Remove and Install
SR4 Generator with VR3 or VR4 Voltage Regulator

Coupling - Remove
SR4 Generator with VR3 or VR4 Voltage Regulator

Service Magazine

Improved Procedure Can Be Used To Adjust Voltage Gain{4467}
1980/06/02

Use FT1555 Generator Rotor Removal Tool To Remove And Install Rotor Assembly{0626,0644,0665,4457}
1982/01/11

Make Sure Generator Leads Do Not Move Against Frame{4459}
1982/08/30

Use Care When Installing Circuit Boards In Regulators{4467}
1984/11/19

Extend Exciter Stator Life In Humid, Salty Environments{4453,4454,4450}
1986/02/03

Fabricated Tester For Regulator-Exciter Control Assemblies Used On SR-4 And SRCR Generators{0652,4451,4452,4454,4467}
1979/11/26

Possible Overvoltage Conditions From Output Of VR3 Voltage Regulator {4467,4474}
1990/03/19

Availability Of Replacement SR4 Generators {4450}
1990/07/02

New SR 4 Generator Rewind Data Available{4450}
1991/10/07

Procedure To Check 7C2700 Voltage Control Module{4450,4467}
1992/01/20

New Painting Procedure For SR4 Generators{4450}
1992/01/20

Rotor Shaft Length Changed {4457,4472}
1992/03/23

Special Instruction For Installing VR3 Voltage Regulator On SR4 Generators Now Available {4450}
1993/01/25

Preventive Maintenance To Reduce Risk Of Stator Failure{1404,4453}
1993/07/12

New Voltage Regulator Is Available{4467}
1993/08/09

Air Intake Filters Available As An Attachment {4450,1054}
1993/09/13

Cleaning SR4 Generators {1404,4450}
1993/12/27

Use 142-5055 Insulation Tester Group To Measure And Check Insulation Resistance{4450,0785}
1998/03/23

Special Instruction, REHS0345, "Generator Service Literature Index" Is Available{4450}
1998/10/26

Special Instruction, REHS0345-01, "Generator Service Literature Index" Is Available {4450}
1999/04/12

New 155-5175 AC Current Probe For Generator Sets Now Available{1400,4450,0734,7002}
1999/05/24

A List Of Contacts For Caterpillar Product Support Is Available {1000, 4450, 7000}
2002/03/25

Caterpillar Parts SIS Catalog SR4 :

5N-5040 EXCITER & HEAT SINK AS

9Y-9422 GENERATOR GP

9Y-9421 GENERATOR GP

9Y-7180 GENERATOR GP

9Y-3873 GENERATOR GP

9Y-7205 HEAT SINK AS

4W-1636 EXCITER & HEAT SINK AS

4P-6007 HEAT SINK AS

7C-2527 EXCITER & HEAT SINK AS

5N-9421 EXCITER & HEAT SINK AS

7C-2527 EXCITER & HEAT SINK AS

5N-9421 EXCITER & HEAT SINK AS

7W-9967 KIT-SPACE HEATER

Truck sale:

66,650

Caterpillar SR4, Construction
- mobile generator sets
N C MACHINERY CO.

CATERPILLAR SR4 2014
- MOBILE GENERATOR SETS
N C MACHINERY
- Billings - United States

CATERPILLAR SR4 1900
- OTHER
EMPIRE MACHINERY CO
1725 South Country Club Drive - Mesa -

Call

2000 CAT SR4

Miller Heavy Equipment
Medley, Florida

USD $39,500

1990 CAT SR4

Ryals Machinery Company Inc.