Lincoln Electric 170I manual Changing Liner, GUN Handle Parts, Liner trim length

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D-3

 

MAINTENANCE

 

D-3

 

 

 

 

 

 

Set Screw

Brass Cable

 

 

 

 

 

 

Connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Liner Assembly

(Liner bushing to be sealed tight against brass cable connector)

1-1/4 (31.8 mm) Liner Trim Length

Gas Diffuser

Gas Nozzle or Gasless Nozzle

FIGURE D.2

Liner trim length

CHANGING LINER

NOTICE: The variation in cable lengths prevents the interchangeability of liners. Once a liner has been cut for a particular gun, it should not be installed in anoth- er gun unless it can meet the liner cutoff length requirement. Refer to Figure D.2.

1.Remove the gas nozzle from the gun by unscrew- ing counter-clockwise.

2.Remove the existing contact tip from the gun by unscrewing counter-clockwise.

3.Remove the gas diffuser from the gun tube by unscrewing counter-clockwise.

4.Lay the gun and cable out straight on a flat surface. Loosen the set screw located in the brass connec- tor at the wire feeder end of the cable. Pull the liner out of the cable.

5.Insert a new untrimmed liner into the connector end of the cable. Be sure the liner bushing is stenciled appropriately for the wire size being used.

6.Fully seat the liner bushing into the connector. Tighten the set screw on the brass cable connec- tor. At this time, the gas diffuser should not be installed onto the end of the gun tube.

7.With the gas nozzle and diffuser removed from the gun tube, be sure the cable is straight, and then trim the liner to the length shown in the Figure D.2. Remove any burrs from the end of the liner.

8.Screw the gas diffuser onto the end of the gun tube and securely tighten.

9.Replace the contact tip and nozzle.

GUN HANDLE PARTS

The gun handle consists of two halves that are held together with a collar on each end. To open up the handle, turn the collars approximately 60 degrees counter-clockwise until the collar reaches a stop. Then pull the collar off the gun handle. If the collars are diffi- cult to turn, position the gun handle against a corner, place a screwdriver against the tab on the collar and give the screwdriver a sharp blow to turn the collar past an internal locking rib. See Figure D-3.

Counter-clockwise

Handymig 170i

FIGURE D.3

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Contents Handymig Safety For Engine powered equipmentElectric and Magnetic Fields may be dangerous Electric Shock can kill ARC Rays can burnFumes and Gases can be dangerous IiiCylinder may explode if damaged Welding Sparks can cause fire or explosionInstructions for ELECTRO- Magnetic Compatibility Assessment of AreaPlease Examine Carton and Equipment For Damage Immediately Table of Contents Viii Section DSection E Section FInstallation Technical Specifications HandymigSafety Precautions Identify and Locate ComponentsWork Clamp Installation Select Suitable LocationOutput Connections StackingGUN Installation Work Cable InstallationConnecting Gun Cable to the Handymig GAS ConnectionInput Connections Figure A.5Electrical Input Connection For Rated Output Line Cord ConnectionDesign Features Advantages Operational Features and ControlsOperation General DescriptionControls and Settings Welding CapabilityLimitations Wire Loading Welding OperationsSequence of Operation Wire Threading Figure B.4Cleaning Tip And Nozzle Process GuidelinesMaking a Weld Changing Machine Over to Feed Other Wire Sizes Welding with Gmaw MIGWelding with Fcaw Innershield Shielding GasLearning to Weld Overload ProtectionLearning to Weld SELF-SHIELDED Fcaw Welding ARC Gmaw MIG Welding ARCProcess Selection Common MetalsJoint Types and Positions Welding In The Vertical Position PenetrationFillet Welds Machine SET UP for the SELF-SHIELDED Fcaw Process Welding Techniques for the SELF- Shielded Fcaw ProcessVertical-down Welding Correct Welding PositionCorrect Electrical Stickout ESO Correct Welding SpeedHelpful Hints PracticeMachine SET UP for the Gmaw MIG Process Welding Techniques for the Gmaw MIG ProcessFor the Handymig 170i, use the following Troubleshooting Welds To Eliminate a Ropy Convex BeadTo Correct Poor Penetration in order of impor- tance To Eliminate Stubbing* in order of importanceProper Gun Handling Application Chart Maintenance Routine MaintenanceGUN and Cable Maintenance Component Replacement Procedures Changing the Contact TIPChanging Drive Roll Changing Liner GUN Handle PartsLiner trim length Ground Test Procedure 1TROUBLESHOOTINGE-1 HOW to USE Troubleshooting GuideTroubleshooting Troubleshooting GuideProblems Possible Areas Symptoms Misadjustments Recommended Course of ActionAuthorized Field Service Facility Contact your local Liquid ArcWelding Problems Wiring Diagrams Handymig 170i Wiring Diagram CodePrecaucion Warnung Copyright 2000 Lincoln Global Inc
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