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Lincoln Electric SVM103-A service manual Figure F.6 Brushes Retained with Cable TIE, Procedure

Models: SVM103-A

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F-22

TROUBLESHOOTING & REPAIR

BRUSH REMOVAL AND REPLACEMENT (continued)

FIGURE F.6 - BRUSHES RETAINED WITH CABLE TIE

CABLE

TIE

BRUSHES

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PROCEDURE

1.Remove the spark plug wire.

2.Open the brush holder assembly cover. Squeeze the 2 tabs and depress the cover at the top with a screw driver or your fin- gernail. The cover will drop open on its bottom hinge.

3.With the 1/4” nut driver, remove the 2 screws that hold the brush holder assem- bly in place.

4.With the needle nose pliers, gently remove the black and the red wires.

Note: The red wire is inboard. “RED” is marked on the brush holder beside the termi- nal for the red wire.

5.To change the brushes, use the slot head screw driver to pop off the plastic retainer on the back of the brush holder assembly.

6.Remove the old brush assemblies and insert the new ones. One corner of the ter- minal clip is beveled so that the brush can go in only one way.

7.Snap the plastic retainer back onto the brush holder. The brushes may need some repositioning; wiggle them slightly to help them seat properly on the slip rings.

POWER-ARC 4000

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Lincoln Electric SVM103-A service manual Figure F.6 Brushes Retained with Cable TIE, Procedure

Contents

POWER-ARC TM4000 POWER-ARC Safety Electric Shock can kill Iii Welding Sparks can cause fire or explosion Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications POWER-ARC Installation Safety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Cable Size and Length Power ARCElectrical Output Connections Welding Cable Connections Plugs and HAND-HELD Equipment Auxiliary Power ReceptaclesCable Installation Machine Grounding Circuit Breakers Premises Wiring Type Common Electrical Devices Possible Concerns Table A.2 Electrical Device USE with the POWER-ARC Table of Contents Operation Section General Description Safety InstructionsOperation Operating Instructions Welding Capability Operational Features and ControlsDesign Features Advantages Recommended Applications GENERATOR/WELDER Controls Controls and Settings Gasoline Engine Controls Figure B.2 Gasoline Engine Controls Engine Operation Before Starting the EngineStarting the Engine Stopping the Engine Running the EngineBREAK-IN Period To USE the Generator AS AN Auxiliary Power Supply Generator OperationGeneral Information Table B.3 Generator Power Applications To USE the POWER-ARC 4000 for Welding Welding OperationAfter YOU Finish the Weld Material Thickness Electrode Type Size Setting Welding GuidelinesStick Welding ARC Welding Circuit Correct WAY to Strike AN ARC 12/95 POWER-ARCFour Factors of Successful Welding Electrode Correct Welding Speed Correct ARC Length Table of Contents Accessories OPTIONS/ACCESSORIES Lincoln Electric AccessoriesBriggs and Stratton Accessories Table of Contents Maintenance Engine Maintenance Routine and Periodic Maintenance Figure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Figure D.4 SET Spark Plug GAP Table D.2 Engine Maintenance Parts GENERATOR/WELDER MaintenancePart Part Number Figure D.6. Major Component Locations Table of Contents Theory of Operation Section ENGINE, EXCITATION, Rotor and Stator Theory of Operation Figure E.3 Field Excitation and Auxiliary Power Rotor Field Feedback and Auxiliary Power Weld Winding and Reactor Auxiliary Power Overcurrent Protection Table of Contents Trouble Shooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & Repair Output Problems Troubleshooting Guide Or contact your local Lincoln Local Lincoln Electric Authorized Troubleshooting & Repair Troubleshooting & Repair Engine Problems Engine Problems Welding Problems Rotor Voltage Test Test DescriptionMaterials Needed Ground Stud Lead 200A Connection Output Panel Test Procedure Rotor Resistance Test Rings Slip Cable TIE Brushes Figure F.3 Brushes Retained with Cable TIE Engine Throttle Adjustment Test Oscilloscope Method MarkStrobe-tach Method Frequency Counter Method NUT Figure F.5 Location of Engine Throttle Adjustment NUT Scope Settings Normal Open Circuit Weld Voltage WaveformHigh Idle no Load Normal Open Circuit Voltage Waveform 115 VAC Supply Typical Weld Output Waveform Machine LoadedMachine Loaded to 125 Amps AT 23 VAC Description Brush Removal and Replacement Figure F.6 Brushes Retained with Cable TIE Procedure Procedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal Capacitor AND/OR Diode Bridge Removal Replacement Procedure Capacitor Removal and Replacement Capacitor AND/OR Diode Bridge Removal and Replacement Procedure Diode Bridge Removal and Replacement Instructions STATOR/ROTOR Removal and Replacement Terminals Stator Removal ProcedureTIE Wrap Output Figure F.10 Stator END Bracket Support and THRU-BOLTS Thru Bolts Support Nuts POWER-ARC Rotor Removal Procedure Reassembly ProcedureRotor THRU-BOLT Rotor Feeler Gauge WELDER/GENERATOR OUTPUT1 Auxiliary Power Receptacle OUTPUT1Retest After Repair Engine Output POWER-ARC Table of Contents Electrical DiagramsSection G POWER-ARC Electrical Diagram POWER-ARC POWER-ARC