Lincoln Electric SVM128-A service manual HOW to Eliminate AIR from the Fuel System

Page 39

D-5

D-5

MAINTENANCE

Return to Section TOC

Return to Section TOC

HOW TO ELIMINATE AIR FROM THE FUEL SYSTEM

There are two methods to eliminate air from the fuel system according to the type of pump fitted:

See Figure D.3. The standard method is used where the fuel injection pump has vent screws 4 and 5.

The self-vent method is used where the fuel injection pump has a self-vent feature. Vent screws are not fit- ted to these pumps. No connections or plugs need to be released to eliminate air from the fuel system.

If air enters the fuel system, it must be eliminated before the engine can be started.

Air can enter the system if:

•The fuel tank is drained during normal operation.

•The low-pressure fuel pipes are disconnected.

•A part of the low-pressure fuel system leaks during engine operation.

In order to eliminate air from the fuel system, proceed as follows:

Standard method

1.See Figure D.3. Loosen the banjo connection bolt which is fitted on the top of the filter (1).

2.See Figure D.3. Operate the priming lever on the fuel lift pump (2) until fuel, free from air, comes from the filter vent point. Tighten the banjo connection bolt. If the drive cam of the fuel lift pump is at the point of maximum cam lift, it will not be possible to operate the priming lever. In this situation, the crankshaft must be turned one revolution.

3.See Figure D.3. Where the fuel filter is fitted lower than the fuel injection pump, loosen the inlet con- nection at the fuel injection pump (3) and operate the lift pump to remove any air. Tighten the inlet connection.

4.Ensure that the manual stop control is in the “run” position. If an electrical stop control is used, turn the start key to the “R” position.

5.See Figure D.3. Loosen the vent screw in the lock screw of the hydraulic head (4) and the vent screw on the governor cover of the fuel injection pump (5).

6.Operate the priming lever of the fuel lift pump until fuel, free from air, comes from the vent screw(s). Tighten the vent screw(s).

Return to Master TOC

Return to Master TOC

FIGURE D.3 – ELIMINATING AIR FROM THE FUEL SYSTEM

Return to Section TOC

Return to Master TOC

1

2

3

5

4

Return to Section TOC

Return to Master TOC

SA-250

Page 38 Page 40
Image 39
Page 38 Page 40
Contents SHIELD-ARCTMSA-250 SA-250 SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications SA-250 InstallationSafety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Trailer Cooling SystemMuffler Exhaust Spark ArresterWelding Cable Connections Electrical Output ConnectionsAuxiliary Power RECEPTACLES, PLUGS, and HAND-HELD Equipment Machine GroundingCircuit Breakers SA-250 Table of Contents Operation Section General Description Safety InstructionsOperation Operating InstructionsWelder Operational Features and ControlsDesign Features Recommended ApplicationsLimitations Welding CapabilityWELDER/GENERATOR Controls Controls and SettingsCurrent Range Selector Control of Welding CurrentFigure B.3 Diesel Engine Controls Diesel Engine ControlsCheck and fill the engine fuel tank Engine OperationBefore Starting the Engine Starting the EngineStopping the Engine Cold Weather StartingBREAK-IN Period After you finish welding Welding OperationTable B.1 Range Settings for Wire SIZE/SPEED 12B-12 Auxiliary PowerTable of Contents Accessories OPTIONS/ACCESSORIES Semiautomatic Welding Accessories TIG Welding AccessoriesConnection of the LN-7 to Connection of Lincoln Electric Wire FeedersPIN Amphenol Unused Lead Individually Connection of the LN-25 toFigure C.4 SA-250/LN-25 Across the ARC Connection Diagram Control K487-25 Table of Contents Maintenance Engine Maintenance Routine and Periodic MaintenanceFigure D.1 OIL Drain and Refill Eliminate Air from the Fuel System HOW to Eliminate AIR from the Fuel System Figure D.4 Eliminating AIR from the Fuel System Self-vent methodFigure D.5 Engine Coolant Drain Plug Figure D.6 Tightening the FAN Belt Every Daily or BeforeStarting Engine First 25-50 HoursCleaning the Battery Battery MaintenanceWELDER/GENERATOR Maintenance Idler Maintenance Figure D.5 Major Component Locations SA-250 Table of Contents Theory of Operation Section Theory of Operation ALTERNATOR, and ProtectionCircuits Auxiliary and Field Feedback Coils Excitation FlashingInterpole and Series Coils Fine Current Adjustment Current Range SelectorEngine Idler Circuit Mechanical Coupling DC Generator MachinesSA-250 Table of Contents Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board can be damaged by static electricity PC Board Troubleshooting ProceduresTroubleshooting Guide Observe Safety GuidelinesDetailed in the beginning of this manual Shunt Field Winding Test Field Shunt Winding Test Output Problems Function Problems Function Problems Troubleshooting & Repair Symptoms Misadjustments Course of Action Problems Possible AreasWelding Problems Alternator Rotor Test Test DescriptionMaterials Needed Slip Rings Brushes Test ProcedureFigure F.2 Measuring Rotor Resistance Figure F.3 Measuring Rotor Resistance to Ground Field Shunt Winding Test Field Shunt Winding Test PIN TAB Idler Solenoid Test Idler Solenoid Test Engine Throttle Adjustment Test Strobe Tach Method Engine Throttle Adjustment TestOscilloscope Method Frequency Counter MethodAdjusting Screw Locking NUT Description Flashing the FieldsDo not remove brush holder ProcedureScope Settings Normal Open Circuit Voltage Waveform 115VAC SupplyHigh Idle no Load Fine Current Control Rheostat AT Maximum Normal Open Circuit DC Weld Voltage Waveform Typical DC Weld Output Voltage Waveform Machine Loaded Selector Switch AT Maximum PositionAlternator Rotor Removal Replacement Alternator Rotor Removal ReplacementLoosen Screws Alternator Cover Slip Rings Brushes Figure F.13 Rotor Removal Replacement Alternator Stator Removal and Replacement Alternator Stator Removal ProcedureField Bridge Rectifier VAC Receptacle Circuit Breaker Genernator Brush HOLDER/COIL Cables Figure F.18 Drill Spot Locations Generator Frame Removal and Replacement See Figure F.19 for steps 4 Generator Frame RemovalFigure F.20 Wire and Selector Switch Connections Figure F.21 Case Front Removal Rope Sling ENGINE/GENERATOR Mounting Holes Troubleshooting & Repair Generator Armature Removal and Replacement Figure F.23 Blower Paddle Removal Generator Armature RemovalWelder DC Output AC Auxiliary Power Receptacle OutputRetest After Repair Engine OutputSA-250 Electrical Diagrams Section Section G SA-250 Wiring Diagram Electrical DiagramsWire Feed Module Wiring Diagram Idler PC Board M13708 Schematic Idler PC Board M13708 Components SVM Error Reporting Form

SVM128-A specifications

The Lincoln Electric SVM128-A is a cutting-edge welding machine designed to meet the demands of both professional welders and DIY enthusiasts. This versatile welding power source brings together advanced technology and robust design, making it a reliable choice for various welding applications.

One of the standout features of the SVM128-A is its capability to perform multiple welding processes. It supports MIG, TIG, and stick welding, allowing users to tackle a wide range of projects with ease. This multi-functionality makes it ideal for professionals working in different industries, as well as for hobbyists who enjoy diverse welding tasks.

The SVM128-A is equipped with inverter technology, which enhances its performance by providing a more stable arc and improved energy efficiency. This technological advancement contributes to lower operational costs and allows for a more consistent weld quality across different materials and thicknesses. Additionally, the inverter technology enables the machine to be lightweight and portable, making it convenient for jobs that require mobility.

Another prominent characteristic of the SVM128-A is its user-friendly interface. The machine features intuitive controls and a digital display that allows operators to easily set the desired welding parameters. This simplified setup helps reduce the learning curve for new users while also offering precise control for experienced professionals.

The Lincoln Electric SVM128-A is designed with durability in mind. Its robust construction ensures that it can withstand the rigors of frequent use in demanding environments. The machine is also equipped with various safety features, including thermal overload protection and a duty cycle rating that prevents overheating, ultimately extending its lifespan.

For optimal performance, the SVM128-A provides adjustable output options, allowing users to customize the welding parameters based on their specific needs. This flexibility makes it suitable for welding various metals, including steel, aluminum, and stainless steel.

In summary, the Lincoln Electric SVM128-A combines versatility, advanced technology, and a user-friendly design. With its capability to perform multiple welding processes, lightweight construction, and durable features, it stands out as an excellent option for anyone looking to achieve high-quality welds. Whether for professional or personal use, the SVM128-A is poised to deliver reliable performance and exceptional results.
Top Page Image Contents