Miller Electric XR W, XR A manual Replacing The Liner, Split End, Drive Roll Collet Nut

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6-8. Replacing The Liner

1

2

2

Split End

3

 

YTurn Off welding power source and wire feeder.

1Drive Roll

2Collet Nut

Lay gun cable out straight. Remove drive roll on gun and collet nut on on both ends of liner tube assembly and remove old liner.

3 New Liner

Insert split end of new liner into liner tube assembly and continue feed- ing liner through cable assembly until liner is through liner tube as- sembly and all of split portion is vis- ible.

.If gun is a 15 ft (4.5 m) model,

push the split end of liner through until the opposite end is sticking out of the gun con- nector 1 to 2 inches (2.5 to 5 cm). After trimming, the section with the split on it can be saved to use as another replacement liner.

Cut off split portion of liner. Replace front collet nut with new plastic nut from the liner kit. Reinstall steel nut at gun connector and tighten onto liner.

.May be easier to replace the collet nut with the liner conduit removed from the gun housing block.

The liner end will not stick out of the plastic collet nut supplied with the liner kit.

At the gun connection end, cut liner as close as possible to control (push motor) drive rolls.

Refer to Owner’s Manual for in- structions on rethreading wire.

Ref. 802 536-E / 151 599-F / 200 371

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Contents Description OM-1581137 532YProcesses File MIG GmawFrom Miller to You Table of Contents Troubleshooting Spot Controls OptionalArc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Indique un message de sécurité particulier UNE Décharge Électrique peut entraîner la mortLES Fumées ET LES GAZ peuvent être dangereux DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaquesGun Specifications − SpecificationsWire Feeder Specifications Duty Cycle And Overheating− Installation Constant Voltage CV Weld- ing Power Source Plug Push door back into original posi- tion to close Removing Top Cover Of Pistol Grip GunTop Cover Triangular Boss Air-Cooled Gun Connections Water-Cooled Gun Connections Air-Cooled Feeder Connections RegulatorReturn Fitting On Water-Cooled Feeder ConnectionsTop View Rear Panel Supply Fitting On RegulatorReinstall right side panel Voltage Sensing Lead Connections11 VAC/Contactor Control Plug Information Receptacle on welding power Pins a & B of PLG5Or -4, install 5-pin or Source, and install plug ontoInstalling Wire Spool Threading Welding Wire Through Feeder Threading Welding Wire Through Gun Coolant GuidelinesAdjusting Wire Feed Starting Speed Front Panel Controls Of Feeder Air-Cooled Model Shown Safety Equipment− Operation Work And Voltage Sensing Cable ClampsRun-In Speed Control Jog SwitchVoltage/Wire Speed Switch And Meter Optional Remote Voltage Control Optional Power SwitchSpot Controls Optional Flowmeter Optional Internal ControlsCoolant Supply For Water-Cooled Models Only Gun ControlsShielding Gas Sequence Of Gas Metal Arc Welding Gmaw − Continuous Or SpotTurn Off all power before maintaining − Maintenance & TroubleshootingRoutine Maintenance MonthsChanging Or Cleaning Gun Drive Roll Changing Feeder Drive Roll And Wire Inlet Guide Close pressure roll assembly. Close and latch door Changing Gun Contact Tip Removing Diffuser In Air And Water-Cooled Pistol-Grip GunsSplit End Turn Off welding power source and wire feederReplacing The Liner Drive Roll Collet NutReplacing Hub Assembly Close gun pressure roll assembly and reinstall gun coverOverload Protection Adjusting Hub TensionWater Flow Switch Optional For Water-Cooled Models Troubleshooting Wire Feeder TroubleGun Trouble Reinstall current pick-up tab if applicable see SectionFilter, and clean fittings see Section − Electrical Diagrams Circuit Diagram For Wire FeederCircuit Diagram For Gun OM-1581 45 46 − Parts List12 13 9 10 17 18 17 Dia Part Description Quantity Mkgs CB1 Motor & Wire Drive -1 Item Includes ItemsPanel, Front w/Components Water-Cooled Model Illustrated Panel, Front w/Components -1 Item Includes 38FigItems 24 PLG20 136 Head Tube Assembly Of Pistol-Grip Gun − Parts List Including Consumables NumberTapered FasTipt Contact Tips Heavy Duty FasTiptContact TipsExtra Heavy Duty FasTiptContact Tips Barrel Assemblies Gas DiffusersInsulators Head Tube AssembliesSupport ServiceYour distributor also gives For assistance in filing or settling claims, contact To locate a Distributor or Service Agency visitMiller Electric Mfg. Co Your distributor and/or equipment manufacturer’s