Miller Electric XR W, XR A manual Close pressure roll assembly. Close and latch door

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6-4. Replacing Or Cleaning Gun Drive Roll Bearing

1

4	2
	2
3

6-5. Replacing Or Cleaning Feeder Drive Roll Bearing

1

6 7 6

52

Tools Needed:

3

4

Turn Off wire feeder and welding power source.

1Top Cover

2Pressure Roll Assembly

3Screw

4Pressure Roll

Remove as shown.

Use a wire brush to clean bearing. Reinstall with washers, and tighten screw.

Close pressure roll assembly. Reinstall top cover.

Tools Needed:

Ref. 151 599−F

Turn Off wire feeder and welding power source.

1Pressure Roll Assembly

2Retaining Ring

3Mounting Arm

4Hinge Pin

5Screw

6Shoulder Washer

7Drive Roll Bearing Remove as shown.

Use a wire brush to clean bearing. Reinstall, and tighten screw.

Close pressure roll assembly. Close and latch door.

151 778 / Ref. 151 781-B

OM-1581 Page 32

Image 36

Contents OM-1581137 532Y ProcessesDescription File MIG GmawFrom Miller to You Table of Contents Troubleshooting Spot Controls OptionalSymbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier LE Soudage peut provoquer un Incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaques− Specifications Wire Feeder SpecificationsGun Specifications Duty Cycle And Overheating− Installation Constant Voltage CV Weld- ing Power Source Plug Removing Top Cover Of Pistol Grip Gun Top Cover Triangular BossPush door back into original posi- tion to close Air-Cooled Gun Connections Water-Cooled Gun Connections Air-Cooled Feeder Connections RegulatorWater-Cooled Feeder Connections Top View Rear PanelReturn Fitting On Supply Fitting On RegulatorReinstall right side panel Voltage Sensing Lead Connections11 VAC/Contactor Control Plug Information Pins a & B of PLG5 Or -4, install 5-pin orReceptacle on welding power Source, and install plug ontoInstalling Wire Spool Threading Welding Wire Through Feeder Threading Welding Wire Through Gun Coolant GuidelinesAdjusting Wire Feed Starting Speed Safety Equipment − OperationFront Panel Controls Of Feeder Air-Cooled Model Shown Work And Voltage Sensing Cable ClampsJog Switch Voltage/Wire Speed Switch And Meter OptionalRun-In Speed Control Power Switch Spot Controls OptionalRemote Voltage Control Optional Flowmeter Optional Internal ControlsGun Controls Shielding GasCoolant Supply For Water-Cooled Models Only Sequence Of Gas Metal Arc Welding Gmaw − Continuous Or Spot− Maintenance & Troubleshooting Routine MaintenanceTurn Off all power before maintaining 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 GunsTurn Off welding power source and wire feeder Replacing The LinerSplit End Drive Roll Collet NutReplacing Hub Assembly Close gun pressure roll assembly and reinstall gun coverAdjusting Hub Tension Water Flow Switch Optional For Water-Cooled ModelsOverload Protection Troubleshooting Wire Feeder TroubleReinstall current pick-up tab if applicable see Section Filter, and clean fittings see SectionGun Trouble − Electrical Diagrams Circuit Diagram For Wire FeederCircuit Diagram For Gun OM-1581 − Parts List 12 13 9 10 17 18 1745 46 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 38Fig Items 24Includes PLG20 136 Head Tube Assembly Of Pistol-Grip Gun − Parts List Including Consumables NumberHeavy Duty FasTiptContact Tips Extra Heavy Duty FasTiptContact TipsTapered FasTipt Contact Tips Gas Diffusers InsulatorsBarrel Assemblies Head Tube AssembliesService Your distributor also givesSupport To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s