John Deere 15K, 25K PTO Standby Alternators Repair Technical Manual (TM1119)

Table of Content – Technical Manual TM1119

GENERAL 2-10
Introduction 2
Safety 3
Glossary 4-5
Identification View 6
Theory of Operation 7
Lubrication 8
Serial and Model Numbers 8
Locating Alternator 9
Concrete Foundation 9
Load Transfer Switch and Power Return Signal 9
Wire Installation to Alternator 10

DIAGNOSING MALFUNCTIONS 11-15

DISASSEMBLY 16-27
Electrical Components 18-22
Gear Case 22-25
Panel Accessories 25-27

TESTING AND REPAIR 28-37
Wire Diagram of 15K 28
Wire Diagram of 25K Single-Phase 28
Wire Diagram of 25K Three-Phase 29
Voltage Calibration Adjustment 29
Voltage Stability 30
Flashing the Field 30
Rotating Rectifiers 31
Voltage Regulator Checkout 32
Reactor 34
Transformer 34
Brushless Exciter Rotor 35
Brushless Exciter Stator 35
Alternator Rotor 36
Alternator Stator 37
Wiring Harness Check 37

ASSEMBLY 38-46
Electrical 38-42
Gear Case 42-44
Panel Accessories 44-46

MAKING SPECIAL TOOLS 47-48
Bearing Driver 47
Bearing Puller Crutch 48
Stator Lift Hook 48

SPECIFICATIONS 49-51
Alternator Power Specifications 49
Alternator Dimensions 49
Torque Values 50
Special Tools 50