Main Generator Frame Removal | Lincoln Electric SVM134-A manual

F-41

F-41

TROUBLESHOOTING & REPAIR

	TOC	TOC		MAIN GENERATOR FRAME REMOVAL
	Section	Master		AND REPLACEMENT (continued)
	Section	Master		FIGURE F.19 – FRONT PANEL WIRING CONNECTIONS
	Return to	Return to		FIGURE F.19 – FRONT PANEL WIRING CONNECTIONS
	Return to	Return to	14. BLACK LEAD TO
			14. BLACK LEAD TO
			IDLER PC BOARD
			18. WHITE LEAD
					22. BROWN LEAD TO
			21. YELLOW LEAD		IDLER SWITCH
			TO IDLER SWITCH
	TOC	TOC
	to Section	to Master	17. RED LEADS TO	C	D
			17. RED LEADS TO	A	B
			IGNITION SWITCH	A	B
			IGNITION SWITCH
			16. "H" LEAD TO		{ 20.19. BLUE AND BLACK
	Return	Return	16. "H" LEAD TO
			START BUTTON	E
					LEADS TO AMMETER

			15. SHUNT LEADS		13. RED LEAD TO
			QUICK DISCONNECT		13. RED LEAD TO
			QUICK DISCONNECT		DC RECEPTACLE
					DC RECEPTACLE

		13.	Using the slot head screw driver, remove the	18. Remove the white lead from the idler PC
TOC	TOC		red lead connecting the 115VDC receptacle		board. See Figure F.19 and the Wiring
TOC	TOC		to the DC exciter. See Figure F.19 and the		Diagram.
			to the DC exciter. See Figure F.19 and the		Diagram.
Section	Master		Wiring Diagram. Cut any necessary cable	19.	Using the 3/8” nut driver, remove the blue
			ties.	19.	Using the 3/8” nut driver, remove the blue
					lead from the ammeter. Label for reassem-


		14.	Remove the black lead connecting the idler		bly. See Figure F.19 and the Wiring Diagram.
to	to		PC board to the DC exciter. See Figure F.19	20.	Using the 3/8” nut driver, remove the black
to	to		and the Wiring Diagram. Cut any necessary
Return	Return
					lead from the ammeter. Label for reassem-
			cable ties.

					bly. See Figure F.19 and the Wiring Diagram.
					bly. See Figure F.19 and the Wiring Diagram.
		15. Disconnect the blue and brown main shunt		21. Label and remove the yellow lead from the
			leads from their quick disconnect splices.	21. Label and remove the yellow lead from the
			leads from their quick disconnect splices.		idler switch. The yellow lead connects the
			See the Wiring Diagram.		idler switch. The yellow lead connects the
			See the Wiring Diagram.		idler switch to the oil pressure switch. See
					idler switch to the oil pressure switch. See
		16. Disconnect the “H” lead from the START but-			Figure F.19 and the Wiring Diagram.
			ton switch. See Figure F.19 and the Wiring	22. Label and remove the brown lead from the
			Diagram.	22. Label and remove the brown lead from the
			Diagram.		idler switch. The brown lead connects the
					idler switch. The brown lead connects the
		17.	Remove the two red leads from the ignition		idler switch to the idler solenoid. See Figure
Return to Section TOC	Return to Master TOC		switch. Label for reassembly. See Figure		F.19 and the Wiring Diagram.
			F.19 and the Wiring Diagram.
			CLASSIC I
			CLASSIC I

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Lincoln Electric SVM134-A service manual Main Generator Frame Removal

Contents

Classic I TM California Proposition 65 Warnings Safety Electric Shock can kill Iii Welding Sparks can cause fire or explosion Sûreté Pour Soudage a L’Arc Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Classic Installation Location and Ventilation Safety PrecautionsStoring PRE-OPERATION Engine Service Muffler Cooling SystemExhaust Spark Arrester Trailers Figure A.1 Ground Stud Location Machine Grounding Electrical Output Connections Auxiliary Power Receptacle PLUGS, and HAND-HELD EquipmentWelding Cable Connections Cable size for combined length Classic Table of Contents Operation Section Operation Safety InstructionsOperating Instructions Recommended Applications Operational Features and ControlsWelder Generator WELDER/GENERATOR Controls Controls and Settings Figure B.2 Current Controls Control of Welding Current Return Section TOC Gasoline Engine Controls Before Starting the Engine Engine OperationStarting the Engine Cold Weather Starting Stopping the EngineBREAK-IN Period After you finish welding Welding Operation Table B.1 Range Settings for Wire SIZE/SPEED Auxiliary Power Table of Contents Accessories Semiautomatic Welding Accessories OPTIONS/ACCESSORIES Wire Feed Module see Figure C.1 Connection of Lincoln Electric Wire FeedersConnection of the LN-25 to Classic I Across the ARC with Classic Table of Contents Maintenance Engine Maintenance Safety Precautions Routine and Periodic Maintenance Figure D.1 OIL Drain and Refill MAX MIN Figure D.2A Engine Coolant Drain Plug Gap Specifications 0.032 inch .8 mm After cleaning or when installing a new spark plugSet the terminal gap with a feeler gauge or gapping Tool. See Figure D.4 Classic I charging system is Negative Battery Maintenance Return to Section Return to Section TOC WELDER/GENERATOR Maintenance 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 HOW to USE Troubleshooting Guide Troubleshooting & Repair PC Board can be damaged by static electricity PC Board Troubleshooting Procedures 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 DC Exciter Test Test Procedure Figure F.2 Exciter Cover Removal Shunt Coil and Series Coil Resistance Tests Small Flex Lead Solid 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 Strobe Tach Method Engine Throttle Adjustment Test Adjust High Idle Engine Throttle Adjustment Test Adjust Low Idle Description Flashing the Fields Flashing the Fields Procedure 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 Typical DC Weld Voltage Waveform Machine Loaded Selector Switch AT Maximum DC Exciter Armature and Field Coils Removal and Replacement Reassembly DC Exciter Armature Removal ProcedureDC Exciter Armature and Field Coils Perform the DC Exciter Armature Removal Procedure Field Coils Removal Procedure Main Generator Frame Removal and Replacement Replacement Bolt / NUT Main Generator Frame Removal Perform the DC Exciter Armature Removal Lead Figure F.16 Selector Switch Lead Removal Terminal Figure F.18 Choke Control Cable Removal Loosen Here Main Generator Frame Removal Figure F.20 Front Panel Fastener Removal Troubleshooting & Repair Remove Mounting NUTS, Washers Bolts Feet Perform the DC Exciter Armature Reassembly Procedure Main Generator Armature Removal and Replacement Armature is now free to be removed from the engine Main Generator Armature Removal Retest After Repair DC Auxiliary Power Receptacle OutputEngine Output Welder DC Output Electrical Diagrams Section Wiring Diagram Classic Electrical Diagrams Wiring Diagram Wire Feed Module Wire Feed Module Wiring Diagram 16990 M Schematic Idler PC Board Idler PC Board Assembly Idler PC Board