Perform the DC Exciter Armature Removal | Lincoln Electric SVM134-A

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F-38

F-38

TROUBLESHOOTING & REPAIR

MAIN GENERATOR FRAME REMOVAL

AND REPLACEMENT (continued)

FIGURE F.15 – FUEL TANK MOUNTING DETAILS

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TOC

FUEL TANK

BOLTS / NUTS / WASHERS (4)

FUEL LINE

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FUEL BOWL

RAILS

5.	Perform the DC Exciter Armature Removal	7.	Using the 9/16” wrench, remove the four nuts,
	Procedure.		bolts, and washers holding the fuel tank
6.	Turn off the fuel supply at the fuel bowl and		assembly to the rails. See Figure F.15.
6.	Turn off the fuel supply at the fuel bowl and
	remove the fuel line. Plug the line to avoid	8.	Carefully remove the fuel tank and set it aside
	spillage.		in a safe area.

CLASSIC I

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Lincoln Electric SVM134-A service manual Perform the DC Exciter Armature Removal

Contents

Classic I TM Safety California Proposition 65 Warnings Electric Shock can kill Welding Sparks can cause fire or explosion Iii Précautions DE Sûreté Sûreté Pour Soudage a L’Arc Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications Classic Location and Ventilation Safety PrecautionsStoring PRE-OPERATION Engine Service Exhaust Spark Arrester Cooling SystemMuffler Trailers Machine Grounding Figure A.1 Ground Stud Location Welding Cable Connections Auxiliary Power Receptacle PLUGS, and HAND-HELD EquipmentElectrical Output Connections Cable size for combined length Classic Table of Contents Operation Section Operation Safety InstructionsOperating Instructions Welder Operational Features and ControlsRecommended Applications Generator Controls and Settings WELDER/GENERATOR Controls Control of Welding Current Figure B.2 Current Controls Gasoline Engine Controls Return Section TOC Before Starting the Engine Engine OperationStarting the Engine Cold Weather Starting Stopping the EngineBREAK-IN Period Welding Operation After you finish welding Auxiliary Power Table B.1 Range Settings for Wire SIZE/SPEED Table of Contents Accessories OPTIONS/ACCESSORIES Semiautomatic Welding Accessories Connection of the LN-25 to Connection of Lincoln Electric Wire FeedersWire Feed Module see Figure C.1 Classic I Across the ARC with Classic Table of Contents Maintenance Safety Precautions Routine and Periodic Maintenance Engine Maintenance Figure D.1 OIL Drain and Refill MAX MIN Figure D.2A Engine Coolant Drain Plug Set the terminal gap with a feeler gauge or gapping After cleaning or when installing a new spark plugGap Specifications 0.032 inch .8 mm Tool. See Figure D.4 Battery Maintenance Classic I charging system is Negative WELDER/GENERATOR Maintenance Return to Section Return to Section TOC Idler Maintenance Figure D.5 Major Component Locations Classic Table of Contents Theory of Operation Section Theory of Operation BATTERY, STARTER, Engine Alternator and OIL Switch CircuitGeneral Description Excitation Flashing ENGINE, Main Generator Armature and Frame and DC ExciterMain SHUNT, Interpole and Series Coils Current Range Selector Fine Current AdjustmentEngine Idler Circuit DC Generator Machines Return to Section TOC Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting Guide PC Board Troubleshooting Procedures PC Board can be damaged by static electricity Observe Safety Guidelines Troubleshooting GuideDetailed in the beginning of this manual Shunt Field Winding Test Main Generator Throttle Adjustment Test Output Problems Function Problems Troubleshooting & Repair Engine Problems Welding Problems Test Description DC Exciter TestMaterials Needed Test Procedure DC Exciter Test Figure F.2 Exciter Cover Removal Small Flex Lead Solid Shunt Coil and Series Coil Resistance Tests Idler Solenoid Test Troubleshooting & Repair Main Generator Shunt Field Winding Test Main Generator Shunt Field Winding Test Figure F.6 Plug P10 PIN Assignments TAB Engine Throttle Adjustment Test Engine Throttle Adjustment Test Strobe Tach Method Engine Throttle Adjustment Test Adjust High Idle Adjust Low Idle Flashing the Fields Description Procedure Flashing the Fields Figure F.11 Brush HOLDER/BATTERY Jumper Connections Normal Open Circuit Voltage Waveform 115VDC Supply Scope SettingsHigh Idle no Load Fine Current Control Rheostat AT Maximum Normal Open Circuit DC Weld Voltage Waveform Machine Loaded Selector Switch AT Maximum Typical DC Weld Voltage Waveform DC Exciter Armature and Field Coils Removal and Replacement Reassembly DC Exciter Armature Removal ProcedureDC Exciter Armature and Field Coils Field Coils Removal Procedure Perform the DC Exciter Armature Removal Procedure Main Generator Frame Removal and Replacement Replacement Main Generator Frame Removal Bolt / NUT Perform the DC Exciter Armature Removal Figure F.16 Selector Switch Lead Removal Terminal Lead Figure F.18 Choke Control Cable Removal Loosen Here Main Generator Frame Removal Figure F.20 Front Panel Fastener Removal Troubleshooting & Repair Feet Remove Mounting NUTS, Washers Bolts Perform the DC Exciter Armature Reassembly Procedure Main Generator Armature Removal and Replacement Main Generator Armature Removal Armature is now free to be removed from the engine Engine Output DC Auxiliary Power Receptacle OutputRetest After Repair Welder DC Output Electrical Diagrams Section Electrical Diagrams Wiring Diagram Classic Wire Feed Module Wiring Diagram Wiring Diagram Wire Feed Module Schematic Idler PC Board 16990 M PC Board Assembly Idler PC Board Idler