Lincoln Electric SVM207-A service manual Procedure

Page 87

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F-49

TROUBLESHOOTING AND REPAIR

F-49

 

ENGINE/ROTOR REMOVAL AND REPLACEMENT PROCEDURE (cont.)

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PROCEDURE

1.Refer to Figure F.12 for component locations.

2.Remove the engine spark plug wires.

3.With a 5/16” nut driver or socket, remove the 6 sheet metal screws from the case top.

4.Remove the rubber gasket (cover seal) from the lift bail.

5.Remove the fuel cap. The rubber gasket for the fill tube will come off with the case top.

6.Remove the case top, the reinstall the fuel cap.

7.Remove the 5 screws holding the right case side and the 5 screws holding the left case side.

8.Remove the case sides by lifting up and out.

9.WIth a 3/8” wrench or socket, remove the battery cover.

10.Disconnect the negative battery cable, then the positive battery cable. BE SURE TO DISCON-

NECT THE NEGATIVE BATTERY CABLE FIRST. Remove the battery and set it aside.

11.With a diagonal cutters, cut the cable ties around the leads from the starter solenoid and disconnect the leads. Remove lead 209A from the harness bundle.

12.Disconnect the large black plug in front of the fuel tank spout.

13.With a 3/8” wrench, remove the cowling covers at the rear on the stator, both sides of the machine.

14.WIth a 3/8” wrench, remove the two screws that hold the vertical fan baffle in place. Slide the baf- fle forward toward the rectifier bridge heat sink assembly.

15.Hold the rotor shaft with locking pliers and unscrew the blower fan. Turn the fan counter- clockwise. You do not need to remove the fan from the machine, but be sure it is completely unscrewed from the rotor shaft

16.With a 1/4” nut driver, disconnect the engine choke cable from the engine. Mark the location of the retainer for reassembly. The other end can remain connected.

17.Disconnect the idle linkage by unsnapping the plastic clip at the engine end of the idler rod. Snap the clip back onto the rod to avoid losing it; remove the rod for reassembly.

18.Disconnect the fuel line from the fuel tank. Plug the hose and also plug the connection at the fuel tank to prevent the escape of gasoline fumes.

19.Cut the cable ties and remove leads 224C and 210 from the oil pressure switch.

20.With a 9/16” wrench, remove the ground lead from the right engine foot mounting bolt.

21.With a 7/16” wrench, remove the brush holder bracket and leads #219 & 200A from the stator frame.

22.Support the engine with a chain hoist. Lift bails are provided on the top of the engine for this pur- pose.

23.With the 9/16” wrench, remove the right and left engine foot mounting bolts.

24.With the 9/16” wrench, remove the four bolts that hold the stator to the engine. There is one lock washer per bolt.

25.With the chain hoist, unweight the engine gently. Use a pry bar to carefully pry between the engine and the stator frame in order to unseat the bearing on the end of the rotor shaft. Separate the engine and rotor from the stator frame, supporting the rotor by hand to prevent damage to the rotor core.

26.Move the engine and rotor assembly to a bench. The engine is off balance with the rotor still attached; therefore, support the end of the rotor with a suitably sized block before unhooking the chain hoist.

NOTE: If the Stator needs to be replaced, it can be dis- connected and removed/replaced at this point. Then move on to the Reassembly Procedure.

RANGER® 3 PHASE

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Contents Ranger 3 Phase Ranger 3 Phase SafetyFumes and Gases Welding Cutting Précautions DE Sûreté Safety Methods of Reducing Emissions Mains Supply Master Table of Contents for ALL Sections Table of Contents Installation Section Height Width Depth Weight InstallationTechnical Specifications Ranger 3 Phase K2337-1 & K2337-2 Auxiliary PowerTowing Safety PrecautionsMachine Grounding Spark ArresterCan cause fire or explosion PRE-OPERATION ServiceGasoline Vehicle MountingAngle of Operation Welding Output CablesTotal Combined Length of Electrode and Work Cables High Altitude OperationInstructions 120/240 Volt Dual Voltage Receptacle Auxiliary PowerVolt 3 Phase Receptacle with Ground Gfci Duplex ReceptaclesTABLE A.1 Simultaneous Welding and Power Ground WireStandby Power Connections Auxiliary Power While WeldingFigure A.3 Connection of Ranger 3 Phase to Premises WiringElectrical Device USE with the Ranger 3 Phase USE These Devices with a Ranger 3 PhaseDevices Without Addi Tional Resistive Type Loads Table of Contents Operation Section Welder Controls Function and Operation Engine SwitchOperation GENERAL DESCRIPTIONControl Dial Polarity SwitchRanger 3 Phase Approximate Fuel Consumption Range SwitchTIG Constant Current Welding Wire Feed Welding Processes Constant VoltageWelding Process Stick Constant Current WeldingStick Auto Stopping the Engine STARTING/SHUTDOWN InstructionsBREAK-IN Period Starting the EngineTable of Contents Accessories Section K1745-1 Welding GAS Cylinder LPG Tank Holder AccessoriesTIG WIRE FEEDRECOMMENDED EQUIPMENT StickRanger 3 Phase Table of Contents Maintenance Section Safety Precautions MaintenanceDo not attempt to polish slip rings while engine is running Gfci Receptacle Testing and RESET- Ting ProcedureAIR Cleaner and Other Maintenance Slip Rings OIL Filter ChangeCHAMPION RC12YC BatteryEngine Maintenance Parts KOHLER C23S Fram CA79Figure D.1 Major Component Location MAINTENANCED-5Ranger 3 Phase 1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation General DescriptionEngine Components and Operation Figure E.2 ROTOR, Stator and Control Circuits ROTOR, Stator & Control CircuitsFigure E.2 Weld Circuitry Weld Circuitry1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting and RepairReturn to Section PC Board Troubleshooting ProceduresDiagram Perform the Output Bridge Test Gram Wiring Wiring Diagram Troubleshooting and Repair Figure F.4 and/or the Wiring Rotor Voltage Test Procedure Test DescriptionMaterials Needed Rotor Voltage Test Test ProcedureRotor Resistance Test Figure F.2 Slip Rings TEST PROCEDUREAuxiliary and Field Winding Test To test the 120 VAC winding To test the 480 VAC 3 Phase windingProbes Reading Auxiliary WindingsField Winding Figure F.4 Control PC BoardRanger 3 Phase Output Rectifier Bridge Test + Meter Lead Meter Reading Figure F.5 OUTPUT RECTIFIERToroid Test Toroid Test Charging Circuit Test Voltage Regulator AC Lead DC Lead Engine Throttle Adjustment Test Engine Throttle Adjustment Test Low Idle Adjustment SolenoidNut Housing Figure F.9 115VAC Supply Waveform High IDLE- no Load Scope Settings Normal Open Circuit Voltage Waveform 115 VAC SupplyHigh Idle no Load Output Control AT Maximum Machine Loaded Typical DC Weld Output Waveform CV ModeMachine Loaded to 200 Amps AT 26 VDC Typical DC Weld Output Waveform CC ModeMachine Loaded to 225 Amps AT 25 VDC Typical AC Weld Output WaveformAbnormal Open Circuit Weld Voltage Waveform CV Mode Abnormal Open Circuit DC Weld Voltage Waveform Normal Open Circuit Weld Voltage Waveform CV Mode Normal Open Circuit DC Weld Voltage Waveform CC Mode Normal Open Circuit AC Weld Voltage Waveform Ranger 3 Phase Brush Removal and Replacement Procedure Procedure Brush Removal and Replacement ProcedureBrush Assembly Bracket Bolts Ranger 3 Phase Printed Circuit Board Removal Replacement Procedure Figure F.10 Door Removal Printed Circuit Board RemovalOutput Rectifier Bridge Removal Replacement Procedure Figure F.11 OUTPUT RECTIFIER Output Rectifier Bridge RemovalENGINE/ROTOR Removal and Replacement Procedure ENGINE/ROTOR Removal and Replacement Procedure Procedure Figure F.13 Engine and Rotor Removed from Stator Rotor Removal ProcedureReassembly Procedure Retest After Repair Table of Contents Diagram Section RaNGEr 3 phaSE Ranger 3-PHASEL12259 SchEmaTic cOmplETE machiNE l12259ElEcTrical DiaGramS