Miller Electric 172 M-10 Gun manual Replacing Switch And/Or Head Tube, Disconnect gun first

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5-7. Replacing Switch And/Or Head Tube

Y Disconnect gun first.

1Remove handle locking nut.

3 Slide handle.

2 Remove switch housing. Note: If installing new switch, push switch lead connectors onto terminal of new switch (polarity is not important). Install switch back into handle, and secure with handle locking nut. If replacing head tube, continue to end of figure.

4Secure head tube in vice.

5 Loosen jam nut. Remove from vice and turn head tube out by hand.

6Install existing shock washer onto new head tube. Hand-tighten head tube into connector cable.

7Place head tube in vice and tighten until nuts are tight.

8Remove from vice. Reposition handle and install switch housing. Secure with handle locking nut.

Tools Needed:

3/4 in

Ref. ST-800 795-C

OM-1318 Page 21

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Contents Processes OM-1318187923FDescription From Miller to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards About Pacemakers EMF InformationConsignes DE Securite Lire Avant Utilisation Signification des symbolesUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe LA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Specifications SpecificationsVolt-Ampere Curves Welding Gun Duty Cycle And Overheating Welding Power Source Duty Cycle And OverheatingOverheating DefinitionInstalling Work Clamp InstallationInstalling Welding Gun And Changing Polarity Flow Adjust Installing Gas SupplySelecting a Location And Connecting Input Power Electrical Service GuideDo not move or operate unit Where it could tip 18 in 457 mm of space for airflowStandard Wire Spool Standard Wire Reel Installing Wire Spool And Adjusting Hub TensionTools Needed 15/16 Reinstall contact tip, and nozzle Assembly, and let go of wire14 ga 16 ga 18 ga 20 ga 22 ga Weld ParameterVoltage Switch Wire Speed ControlOperation ControlsRoutine Maintenance Maintenance &TROUBLESHOOTINGDrive Motor Fuse F1 Short Circuit ShutdownTurn Off power before cleaning or repairing drive assembly Cleaning Or Repairing Drive AssemblyWire Spool Nozzle Turn Off power before replacing contact tipDisconnect gun from unit Cleaning Or Replacing Gun LinerBlow out gun casing Tools Needed Remove liner To Reassemble GunDisconnect gun first Replacing Switch And/Or Head TubeRemove handle locking nut Slide handle Secure power cord plug in receptacle see Section Troubleshooting TableTrouble Remedy Motor continues to run SectionOM-1316 Electrical DiagramMIG Welding Gmaw Guidelines Regulator Flowmeter Wire Feeder Power Source Shielding GasTypical MIG Process Connections Gun Workpiece Work ClampWire Recommendation Wire Speed Typical MIG Process Control SettingsSelect Wire Size Based on 1/8 in material thickness Ipm = inch per minuteHolding And Positioning Welding Gun Push PerpendicularDrag Conditions That Affect Weld Bead ShapeShort Normal Long ShortNormalLongGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting Porosity Troubleshooting Excessive SpatterTroubleshooting Excessive Penetration Possible Causes Corrective ActionsTroubleshooting Incomplete Fusion Troubleshooting Lack Of PenetrationTroubleshooting Burn-Through Troubleshooting Distortion Troubleshooting Waviness Of BeadWeld bead Application Common MIG Shielding GasesFlat & Horizontal1 Fillet OM-1318 Includes Items Parts ListDia Part Description Mkgs Quantity M-10 Gun Figure -2. M-10 Gun Page Your distributor also gives ServiceSupport Miller Electric Mfg. Co Owner’s Record