OPERATOR, ORGANIZATIONAL, DIRECT AND GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL - TM-5-3431-225-150001SAFETY PRECAUTIONS - TM-5-3431-225-150002Section I. INTRODUCTION - TM-5-3431-225-150003Section III. ITEMS TROOP INSTALLED OR AUTHORIZED LIST - TM-5-3431-225-150004Operator, Organizational, Direct and General Support and Depot Maintenance Manual - TM-5-3431-225-150005CHAPTER 1 INTRODUCTION - TM-5-3431-225-150007Difference in Models - TM-5-3431-225-150008Figure 1-1. Welding machine, right front, three-quarter view shipping dimensions.Figure 1-2. Welding machine, left rear three-quarter view.Figure 1-3. Base plan.CHAPTER 2 INSTALLATION AND OPERATING INSTRUCTIONS - TM-5-3431-225-150013Figure 2-1. Load, ground, external power source, gas, and water connections.CHAPTER 2 INSTALLATION AND OPERATING INSTRUCTIONS - TM-5-3431-225-150015CHAPTER 2 INSTALLATION AND OPERATING INSTRUCTIONS - TM-5-3431-225-150016Equipment ConversionFigure 2-2.Welding machine installtion.Section II. MOVEMENT TO A NEW WORKSITE - TM-5-3431-225-150019Figure 2-3. Countrols and instrments.Section IV. OPERATION OF EQUIPMENT - TM-5-3431-225-150021Figure 2-5. Stopping the welding machine.Section V. OPERATION UNDER UNUSUAL CONDITIONS - TM-5-3431-225-150023Figure 2-6. Welding machine operation (sheet 1of2).Figure 2-6. Welding machine operation (sheet 2of2).CHAPTER 3 OPERATOR AND ORGANIZATIONAL MAINTENANCE INSTRUCTIONS - TM-5-3431-225-150027Figure 3-1. Daily preventive maintenance services.Figure 3-2. Quarterly preventive maintenance services.Figure 3-3. Fuses, removal and installation.Figure 3-4. Welding machine top and housing, removal and installation.Figure 3-5. front door assembly, removal and installation.Section V. TROUBLESHOOTING - TM-5-3431-225-150033Section VII. WELDING MACHINE TOP, HOUSING, DOORS, AND PANELSFigure 3-6. Power switch, removal and installation.Figure 3-7. Standard-remote, high frequency, manual-auto switches, removal and installation.Figure 3-8. Startcircuit switch, removal and installation.Figure 3-10. Timers, removal and installation.Figure 3-11. Contractor control and remote amperage control receptacles, removal and installation.Figure 3-13. Relay contactor, removal and installation.Figure 3-15. Rectifier thermostatic switch, removal and intallation.Figure 3-16. Spark gap assembly, removal, installation, and adjustment.Figure 3-17. Voltage change bars, removal and installation.Figure3-18. Ground and electrode terminal boards, removal and installation.Figure 3-19. Gas and water solenoid valves, removal and installation.Figure 3-20. Fan, motor,and guard assembly, removal and installation.Figure 3-21. Fan, motor, and guard assembly, disassembly, and reassembly.CHAPTER 4 DIRECT AND GENERAL SUPPORT AND DEPOT MAINTENANCE INSTRUCTIONSSection III. SPECIAL TOOLS AND EQUIPMENTFigure 4-1. Control panel, removal and installation.Section VI. RANGE AND POLARITY SWITCH, CONTROL RHEOSTAT, lNTENSITY SELECTOR RHEOSTAT, START ADJUSTMENT RHEOSTAT, AND TIG-METALLIC SWITCHFigure 4-2. Range and polarity switch assembly, removal and installation.Figure4-3. Control rheotat, removal and installation.Figure 4-4. Intesity rheostat and TIG switch, removal and installation.Figure 4-5. Start adjustment rheostat, removal and installation.Figure 4-6. Rectifier assembly, removal and installation.Figure 4-7. Control rectifiers, removal and installation.Figure 4-8. Capacitors, removal and installation.Figure 4-9. Resistors, removal and installation.Figure 4-10. Relays, removal and installation.Figure 4-11. High frequency panel, removal and installation.Figure 4-13. Control transformer, removal and installation.Figure 4-14. Main transformer, magnetic amplifier, and stabilizer, removal and installation.Section X. FRAME AND MAIN TRANSFORMER SUPPORT ASSEMBLYCHAPTER 5 D E M O L I T I O N , SHIPMENT AND LIMITED STORAGEFigure 5-1. Placement of charges.Loading Equipment for ShipmentAPPENDIX A REFERENCES - TM-5-3431-225-150071APPENDIX B BASIC ISSUE ITEMS LIST - TM-5-3431-225-150073Section II. BASIC ISSUE ITEMS - TM-5-3431-225-150074APPENDIX C MAINTENANCE ALLOCATION CHART - TM-5-3431-225-150075Section II. MAINTENANCE ALLOCATION CHART - TM-5-3431-225-150076Section III. SPECIAL TOOL AND SPECIAL TEST EQUIPMENT REQUIREMENTS - TM-5-3431-225-150077INDEX - TM-5-3431-225-150079INDEX - TM-5-3431-225-150080INDEX - TM-5-3431-225-150081Figure 1-4. Practical wiring diagram.TM-5-3431-225-15 Welding Machine ARC: General and Inert Gas Shielded Transformer; 300 AMP; 5 to 460 AMP AC: 5 to 350 AMP DC FSN 3431-620-0858 Manual