Hobart Welding Products 2510, M-25 GUN Replacing Switch And/Or Head Tube, Disconnect gun first

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4-8. 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-194 430 Page 23

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Contents June OM-194 430AProcesses DescriptionPage Table of Contents Page 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 eyesPrincipal Safety Standards About Pacemakers EMF InformationLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE Securite Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Soudage peut provoquer un incendie ou une explosion DES Particules Volantes peuvent blesser les yeuxLE Bruit peut affecter l’ouïe DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Exceeding duty cycle can damage unit and void warranty InstallationSpecifications Welding Power Source Duty Cycle And OverheatingWelding Gun Duty Cycle And Overheating Volt-Ampere CurvesDefinition Installing Welding Gun Installing Running GearSetting Gun Polarity For Wire Type Installing Wire Spool And Adjusting Hub Tension Installing Gas SupplyPositioning Jumper Links Installing Work ClampMin Grounding Conductor Size In AWG/Kcmil Electrical Service GuideSelecting a Location And Connecting Input Power Input VoltageHold wire tightly to keep it from unraveling Threading Welding WireControls OperationCO2 Weld ParametersKnockout Panel Circuit Breaker CB1 Maintenance and TroubleshootingRoutine Maintenance Disconnect power before maintainingReplacing Gun Contact Tip Changing Drive Roll And Wire Inlet GuideAligning Drive Rolls And Wire Guide Unit OverloadWire size stamped on tip check and match wire size Turn off welding power source/wire feederDisconnect gun first Replacing Switch And/Or Head TubeTrouble Remedy TroubleshootingCircuit Diagram For Welding Power Source Electrical DiagramOM-194 430 Main Assembly Parts ListItem Dia Part Description Mkgs Quantity Center Baffle w/Components Center Baffle w/Components -1 Item Wire Drive Assembly -2 Item Gun And Cable Assembly, M-25 Part Description Quantity Options and Accessories Page Ment File a claim for loss or damage during ship