Lincoln Electric SVM103-C service manual Engine Problems

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F-8

 

TROUBLESHOOTING

F-8

 

 

 

 

 

 

 

 

 

 

TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

 

 

(SYMPTOMS)

MISADJUSTMENTS(S)

COURSE OF ACTION

 

 

 

 

 

 

ENGINE PROBLEMS

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Engine will not start.

1.

Make sure the ON/OFF Switch is

1.

Check the fuel line for breaks or

 

in the “ON” position.

 

obstructions. Replace the fuel

2.

Check spark plug boot and wire

 

filter. DO NOT RUN THE EN-

 

GINE WITHOUT AN IN-LINE

 

for loose or faulty connection.

 

 

 

FUEL FILTER.

 

 

 

3.

Make sure that the fuel shutoff

2.

The spark plug may be faulty.

 

valve is in the “ON” position.

 

Replace.

 

 

 

4.

Make certain that the engine has

3.

Service the engine as outlined in

 

adequate fuel and oil.

 

the Maintenance section of this

 

 

 

5.

Adjust the choke to prevent car-

 

manual.

 

buretor flooding.

4.

The engine magneto may be

 

 

6.

The recoil starter may not be

 

faulty. Consult engine owner’s

 

engaged with the engine. gently

 

manual.

 

hit the blower housing and/or

5.

The engine may be faulty.

 

pull the rope to its fully extended

 

Replace.

 

position and rapidly wiggle it.

 

 

 

 

 

Repeat until the clutch engages

 

 

 

with the engine shaft and resis-

 

 

 

tance is felt.

 

 

7.Low oil and engine low oil shut- down protection will not allow unit to start. Light in ON-OFF switch will flash when engine is cranked. (Engines equipped with low oil shutdown protection only).

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CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-800-833-9353

POWER-ARC 4000

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Contents POWER-ARC Safety Depends on YouSafety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications POWER-ARCStoring Safety PrecautionsLocation and Ventilation PRE-OPERATION Engine Service Spark Arrester Cert. Kool BoreElectrical Output Connections Welding Cable ConnectionsCable Size for 125 ampPlugs and HAND-HELD Equipment Auxiliary Power ReceptaclesMachine Grounding Premises Wiring Circuit BreakersThese Devices Without POWER-ARC Table of Contents Operation Section Safety Instructions OperationOperating Instructions General DescriptionOperational Features and Controls Design Features AdvantagesRecommended Applications Welding CapabilityControls and Settings GENERATOR/WELDER ControlsGasoline Engine Controls 20 AMP, 120 Volt Duplex ReceptacleStarting the Engine Engine OperationBefore Starting the Engine For a HOT Engine General Information To USE the Generator AS AN Auxiliary Power SupplyGenerator Operation Table B.1 Generator Power Applications Suggested Power Applications Running Watts Start-up WattsWelding Operation Welding Guidelines Table B.2 Welding APPLICATIONS/ELECTRODE Selection GuideOperation What Happens in the Arc? Correct Welding Position Correct Arc Length Practice Use the followingDo the following Butt WeldsFillet Welds PenetrationVertical-Up Welding Vertical-Down WeldingWelding Sheet Metal Overhead WeldingHardfacing To Reduce Wear Welding Cast Iron Cast Iron Plate PreparationLow Hydrogen Group Stable-Arc E7018 High-Speed Group AWS E6013Out-of-Position Group AWS E6011 Table of Contents Accessories Section Lincoln Electric Accessories AccessoriesOPTIONS/ACCESSORIES Table of Contents Maintenance Section Maintenance Routine and Periodic MaintenanceEngine Maintenance Engine AdjustmentsFigure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Table D.1 Engine Maintenance Schedule GENERATOR/WELDER Maintenance Do not attempt to polish slip rings while engine is runningFigure D.6. Major Component Locations Table of Contents Theory of Operation Section Theory of Operation ENGINE, EXCITATION, Rotor and StatorRotor Field Feedback and Auxiliary Power Figure E.3 Field Excitation and Auxiliary PowerAuxiliary Power Overcurrent Protection Weld Winding and ReactorTable of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuideTroubleshooting Output ProblemsVice Facility Or contact your local LincolnElectric Authorized Field Ser Field Service Facility Local Lincoln Electric AuthorizedTroubleshooting Rotor Resistance Test Engine Problems Troubleshooting Engine Throttle Adjustment This procedure takes approximately 15 minutes to perform Rotor Voltage TestTest Description Materials NeededTest Procedure Rotor Voltage TestThis procedure takes approximately 25 minutes to perform Rotor Resistance TestRotor Resistance Test Figure F.3 Brushes Retained with Cable TIE Engine Throttle Adjustment Test This procedure takes approximately 20 minutes to performOscilloscope Method Strobe-tach MethodFrequency Counter Method Wing NUT High Speed Stop Screw High Idle no Load Scope SettingsNormal Open Circuit Weld Voltage Waveform Normal Open Circuit Voltage Waveform 115 VAC Supply Machine Loaded to 125 Amps AT 23 VAC Typical Weld Output WaveformMachine Loaded Brush Removal and Replacement DescriptionBrush Removal and Replacement ProcedureProcedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal Capacitor AND/OR Diode Bridge Removal and Replacement This procedure takes approximately 35 minutes to performProcedure Capacitor Removal and REPLACE- Ment Figure F.8 Location and Discharging the Field CapacitorProcedure Field Diode Bridge Removal and Replacement Figure F.8A Field Diode Bridge LocationInstructions STATOR/ROTOR Removal and ReplacementThis procedure takes approximately 3 hours to perform STATOR/ROTOR Removal and Replacement Troubleshooting & Repair Rotor Removal Procedure Figure F.12 Checking ROTOR-STATOR AIR GAP Auxiliary Power Receptacle OUTPUT1 Retest After RepairEngine Output WELDER/GENERATOR OUTPUT1Return to Section TOC Table of Contents Diagrams Section Diagrams Wiring Diagram Power ARCDIAGRAMSG-3 DIAGRAMSG-4 Dimension Print Power ARC Return to Section TOC SVM Error Reporting Form
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