Table of Contents Diagram Section | Lincoln Electric SVM208-A

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G-1	TABLE OF CONTENTS - DIAGRAM SECTION	G-1
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Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-1

Wiring Diagram (L15064) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-2 Schematic – Complete Machine (S28101) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-3

BULLDOG® 140

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Lincoln Electric SVM208-A service manual Table of Contents Diagram Section

Contents

Bulldog California Proposition 65 Warnings Safety Can be dangerous Electric Shock can kill ARC Rays can burn Welding and Cutting Sparks can cause fire or explosion Cylinder may explode if damagedIii Sûreté Pour Soudage a L’Arc Précautions DE Sûreté Safety Methods of Reducing Emissions Mains Supply Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Bulldog 140 K2708-1 Installation Engine Exhaust can kill Safety PrecautionsLocation and Ventilation Storing OIL PRE-OPERATION Engine ServiceStacking Tilting Electrical Output CONNEC- Tions Welding Cable ConnectionsTable A.1 Recommended Welding Cable Size and Length Plugs and HAND-HELD Equipment Auxiliary Power ReceptaclesCable Installation Electrical Connections Circuit Breakers Premises Wiring Bulldog Ation. do not RUN These Table of Contents Operation Section Operation Limitations WELDER/GENERATOR ControlsOutput Panel Controls Gasoline Engine Controls Engine Operation Starting the Engine Before Starting the Engine Generator Operation Table B.1 Generator Power Applications Control Function / Operation Welding Operation Learning To Stick Weld Material Thickness Electrode Type Size SettingWelding Guidelines Stick Welding What Happens in the Arc? Side view Correct Welding Position Butt Joints PracticeUse the following Do the following Penetration Fillet Joints Vertical-Down Welding Vertical-Up Welding Hardfacing To Reduce Wear How to Hardface the Sharp Edge Metal to Ground WearOverhead Welding Welding Sheet Metal Cast Iron Plate Preparation Welding Cast Iron High-Speed Group AWS E6013 Low Hydrogen Group AWS E7018Out-of-Position Group AWS E6011 Bulldog Table of Contents Accessories Section Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Table of Contents Maintenance Section Maintenance Routine and Periodic Maintenance Engine MaintenanceLocation Return to Section TOC To Section TOC Engine Adjustments Table D.1 Engine Maintenance Parts Spark Plug ServiceOperational Clearance Screws Brushes GENERATOR/WELDER Maintenance Figure D.7. Major Component Locations Bulldog 1TABLE of CONTENTS-THEORY of Operation Section E-1 ENGINE, EXCITATION, Rotor Stator Theory of Operation Figure E.3 Rotor Field Feedback and Auxiliary Power Rotor Field Feedback Auxiliary Power Weld Winding and Reactor Auxiliary Power Overcurrent Protection 1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting and Repair PC Board Troubleshooting Procedures Output Problems Perform the Rotor Voltage Test Electric Authorized Field Ser vice Facility Problems Symptoms Troubleshooting and Repair Perform Field Diode Test Engine Problems Troubleshooting and Repair Engine Throttle Adjustment Test Bulldog Rotor Voltage Test Test DescriptionMaterials Needed Procedure Rotor Voltage TestLead 200A Connection Ground Stud Field Diode Bridge Test + ~ Field Diode Bridge Test Rotor Flashing Circuit Test Figure F.3 Brush Holder Leads 201- and 202B + Rotor Flashing Circuit Test Moving Parts can injure Bulldog Rotor Resistance Test Rotor Resistance Test Figure F.6 Brushes Retained with Cable TIE Cable TIE Brushes Bulldog Engine Throttle Adjustment Test ROBIN/SUBARU Engine Frequency Counter Method Engine Throttle Adjustment TestROBIN/SUBARU Engine Strobe-tach Method High Speed Stop Screw Scope Settings High Idle no Load Normal Open Circuit Voltage Waveform 115VAC Supply Typical Weld Output Waveform Machine LoadedMachine Loaded to 125 Amps AT 23 VAC Brush Removal and Replacement Cable TIE Brushes Brush Removal and Replacement Return to Section Return to Section TOC Bulldog Rheostat Removal and Replacement Figure F.11 Rheostat Removal Rheostat Removal and Replacement Capacitor AND/OR Diode Bridge Removal and Replacement Removal and Replacement Procedure Capacitor Removal and ReplacementCapacitor AND/OR Diode Bridge Figure F.13 Field Diode Bridge Location Procedure Field Diode Bridge Removal and Replacement Bulldog Instructions STATOR/ROTOR Removal and Replacement Generatorengine STATOR/ROTOR Removal and Replacement Figure F.15 Generator Components Troubleshooting and Repair Figure F.16 Output Lead Location TIE Wrap Terminals Stator Removal Procedure Nuts Thru Bolts Support Reassembly Procedure Rotor Removal Procedure Figure F.19 Checking ROTOR-STATOR AIR GAP WELDER/GENERATOR OUTPUT1 Auxiliary Power Receptacle OUTPUT1Retest After Repair Engine Output Bulldog Table of Contents Diagram Section Wiring Diagram Bulldog S28101