Hobart 125 EZ, H-9B manual 13/16 in 21 mm

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6-7. Replacing Gun Liner (Continued)

When liner exits cable at gun handle, guide liner into head tube. Continue to push liner until it exits end of head tube.

3/8 in (10 mm)

Be sure that cable is straight. Tighten liner setscrew. Cut liner so that 3/8 in (10 mm) sticks out of head tube. File down any sharp points on liner after cutting to length.

Reassemble gun by placing head tube and cable into one half of handle. Be sure trigger is properly installed into trigger slot.

8 mm

Thread welding wire through gun (see Section 4-7). Reinstall adapter, contact tip, and nozzle.

13/16 in (21 mm)

8 mm

Insert retaining nut into adapter, and adjust liner stickout as shown. Tighten retaining nut. Reinstall cable end into drive housing with retaining grooves inserted into the two retaining ribs. Be sure to position gas hose up. Position liner in groove so that end is flush with back of groove, adjust if necessary

+ −

Reinstall cover onto wire drive assembly, and secure with screws (3).

Place other half of handle over head tube and cable.

Slide locking rings over top and bottom of handle, and secure by twisting rings clockwise 1/4 turn.

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Contents File Flux Cored Fcaw OM-923Processes DescriptionFrom Hobart to You Table of Contents Warranty Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia 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 DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécurité− Specifications SpecificationsDuty Cycle And Overheating Volt-Ampere Curves Polarity − InstallationInstalling Work Clamp Process/Polarity TableInstalling 4 in 102 mm Wire Spool Installing Wire Spool And Adjusting Hub TensionDo not move or operate unit where it could tip Turn off welding power source Installing Contact Tip And NozzleInput Power Threading Welding WireControls − OperationOperating The Gun Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionSlide replacement wire guide into Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Cleaning Gun Liner Replacing Gun Liner End of wire at spool13/16 in 21 mm Troubleshooting Table Trouble RemedyDoes not run Circuit Diagram − Electrical DiagramTypical Fcaw Process Connections − Wire Welding GuidelinesAmperage Typical Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Poor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Wire does not feed Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Troubleshooting Guide For Semiautomatic Welding EquipmentMain Assembly − Parts ListDia Part Description Quantity Pkg 225209 Wire Drive AssemblyPage Service SupportAssistance Hobart Welding Products Contact your Distributor for