Procedure | Lincoln Electric SVM103-A guide

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F-23

TROUBLESHOOTING & REPAIR

BRUSH REMOVAL AND REPLACEMENT (continued)

PROCEDURE (continued)

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8.To reinstall the brush holder assembly, depress the spring-loaded brushes into the holder and slip a suitable non-metal- lic, fairly stiff retainer through the slots at the top and bottom of the holder. A cable tie works well; see Figure F.6. This will hold the brushes up so that you can eas- ily install the holder.

9.With the needle nose pliers, reinstall the red and the black wires to the appropriate terminals on the brushes. The red wire is inboard.

10.Slip the holder into position in the genera- tor end bracket. Be careful not to loosen the 2 attached wires.

11.Reinstall and tighten the 2 screws with the 1/4” nut driver.

12.Slowly remove the non-metallic retainer from the brush holder and let the brushes snap back against the slip rings.

13.Check the wire connections or clearance and tightness.

14.Snap the brush holder cover back into position.

POWER-ARC 4000

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Lincoln Electric SVM103-A service manual Procedure

Contents

POWER-ARC TM4000 Safety POWER-ARC Electric Shock can kill Welding Sparks can cause fire or explosion Iii Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications POWER-ARC Location and Ventilation Safety PrecautionsStoring PRE-OPERATION Engine Service Power ARC Electrical Output ConnectionsWelding Cable Connections Cable Size and Length Auxiliary Power Receptacles Cable InstallationMachine Grounding Plugs and HAND-HELD Equipment Premises Wiring Circuit Breakers Table A.2 Electrical Device USE with the POWER-ARC Type Common Electrical Devices Possible Concerns Table of Contents Operation Section Safety Instructions OperationOperating Instructions General Description Operational Features and Controls Design Features AdvantagesRecommended Applications Welding Capability Controls and Settings GENERATOR/WELDER Controls Figure B.2 Gasoline Engine Controls Gasoline Engine Controls Before Starting the Engine Engine OperationStarting the Engine Running the Engine Stopping the EngineBREAK-IN Period Generator Operation To USE the Generator AS AN Auxiliary Power SupplyGeneral Information Table B.3 Generator Power Applications Welding Operation To USE the POWER-ARC 4000 for WeldingAfter YOU Finish the Weld Welding Guidelines Material Thickness Electrode Type Size SettingStick Welding Welding Circuit ARC 12/95 POWER-ARC Four Factors of Successful WeldingElectrode Correct WAY to Strike AN ARC Correct ARC Length Correct Welding Speed Table of Contents Accessories Lincoln Electric Accessories OPTIONS/ACCESSORIESBriggs and Stratton Accessories Table of Contents Maintenance Routine and Periodic Maintenance Engine Maintenance Figure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Figure D.4 SET Spark Plug GAP GENERATOR/WELDER Maintenance Table D.2 Engine Maintenance PartsPart Part Number Figure D.6. Major Component Locations Table of Contents Theory of Operation Section Theory of Operation ENGINE, EXCITATION, Rotor and Stator Rotor Field Feedback and Auxiliary Power Figure E.3 Field Excitation and Auxiliary Power Auxiliary Power Overcurrent Protection Weld Winding and Reactor Table of Contents Trouble Shooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting Guide Troubleshooting Guide Output Problems Or contact your local Lincoln Local Lincoln Electric Authorized Troubleshooting & Repair Troubleshooting & Repair Engine Problems Engine Problems Welding Problems Test Description Rotor Voltage TestMaterials Needed Test Procedure Ground Stud Lead 200A Connection Output Panel Rotor Resistance Test Slip Rings Figure F.3 Brushes Retained with Cable TIE Cable TIE Brushes Engine Throttle Adjustment Test Mark Strobe-tach MethodFrequency Counter Method Oscilloscope Method Figure F.5 Location of Engine Throttle Adjustment NUT NUT Normal Open Circuit Weld Voltage Waveform Scope SettingsHigh Idle no Load Normal Open Circuit Voltage Waveform 115 VAC Supply Machine Loaded Typical Weld Output WaveformMachine Loaded to 125 Amps AT 23 VAC Brush Removal and Replacement Description Procedure Figure F.6 Brushes Retained with Cable TIE Procedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal Capacitor AND/OR Diode Bridge Removal Replacement Capacitor AND/OR Diode Bridge Removal and Replacement Procedure Capacitor Removal and Replacement Procedure Diode Bridge Removal and Replacement STATOR/ROTOR Removal and Replacement Instructions Stator Removal Procedure TIE WrapOutput Terminals Thru Bolts Support Nuts POWER-ARC Figure F.10 Stator END Bracket Support and THRU-BOLTS Reassembly Procedure Rotor Removal ProcedureRotor THRU-BOLT Feeler Gauge Rotor Auxiliary Power Receptacle OUTPUT1 Retest After RepairEngine Output WELDER/GENERATOR OUTPUT1 POWER-ARC Electrical Diagrams Table of ContentsSection G Electrical Diagram POWER-ARC POWER-ARC POWER-ARC