Hobart Welding Products OM-240 438B manual SOCKET/WRENCH Selection Table Standard Metric

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. A complete Parts List is available at www.HobartWelders.com

Notes

SOCKET/WRENCH SELECTION TABLE				SOCKET/WRENCH SELECTION TABLE
	(U.S. STANDARD)				(METRIC)

Specifications		Socket or Wrench Size		Specifications		Socket or Wrench Size

Bolt	Decimal	Bolt	Nut	Bolt	U.S.
Bolt	Decimal			Bolt	Decimal	Bolt	Nut
Diameter	Equivalent			Diameter	Decimal	Bolt	Nut
Diameter	Equivalent			Diameter	Equivalent
					Equivalent

1/4 in	.250 in	3/8 in	7/16 in	6 mm	.2362 in	10 mm	10 mm

5/16 in	.3125 in	1/2 in	9/16 in	8 mm	.3150 in	14 mm	14 mm

3/8 in	.375 in	9/16 in	5/8 in	10 mm	.3937 in	17 mm	17 mm

7/16 in	.4375 in	5/8 in	3/4 in	12 mm	.4724 in	19 mm	19 mm

1/2 in	.500 in	3/4 in	13/16 in	14 mm	.5512 in	22 mm	22 mm

9/16 in	.5625 in	7/8 in	7/8 in	16 mm	.6299 in	24 mm	24 mm

5/8 in	.625 in	15/16 in	1 in	18 mm	.7087 in	27 mm	27 mm

3/4 in	.750 in	1-1/8 in	1-1/8 in	22 mm	.8661 in	32 mm	32 mm

7/8 in	.875 in	1-5/16 in	1-5/16 in	24 mm	.9449 in	36 mm	36 mm

1 in	1.000 in	1-1/2 in	1-1/2 in

OM-240 438 Page 47

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Contents OM-240 438B ProcessesDescription Protect Your Investment From Hobart to YouTable of Contents 11-1 10-110-2 10-3HOT Parts can burn Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion Fumes and Gases can be hazardousBuildup of GAS can injure or kill ARC Rays can burn eyes and skinHydraulic Hazards Engine HazardsCompressed AIR Equipment can injure or kill Use only genuine replacement parts from the manufacturerCompressed Air Hazards Hydraulic Fluid can injure or killOverheating can damage motors Welding Wire can injureFire or Explosion hazard Falling Equipment can injureARC Welding can cause interference Principal Safety Standards EMF InformationCalifornia Proposition 65 Warnings Radiation can cause interferenceIndique des instructions spécifiques Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuerLE Bruit peut affecter l’ouïe LES Pièces Chaudes peuvent provoquer des brûluresLES Fumées ET LES GAZ peu- vent être dangereux LE Soudage peut provoquer un incendie ou une explosionLes Pièces Mobiles peuvent causer des blessures ’EXPLOSION DE LA Batterie peut provoquer des blessuresLes Pièces Mobiles peuvent causer des blessures LA Chaleur DU Moteur peut pro- voquer un incendieLire LES Instructions LE Surchauffement peut endommager le moteur électrique Risque D’INCENDIE OULES Fils DE Soudage peuvent provoquer des blessures LA Chute DE L’ÉQUIPEMENT peut provoquer des blessuresProposition californienne 65 Avertissements Principales normes de sécuritéLE Soudage À L’ARC risque de provoquer des interférences En ce qui concerne les implants médicaux Informations relatives aux CEM− Definitions − SpecificationsSymbol Definitions Weld, Power, and Engine SpecificationsDimensions, Weights, And Operating Angles Complete Parts List is available at wwwHobartWelders.comWeight 562 lb 254 kg Welding Amperes Dimensions For Units With Optional Running GearDimensions Duty CycleFuel Consumption Kohler-Powered Units Fuel Consumption Subaru-Powered UnitsVolt-Ampere Curves Generator Power CurveFor CC/AC Mode For CC/DC Mode− Installation Installing Welding GeneratorSerial Number And Rating Label Location Grounding Generator To Truck Or Trailer Frame Engine Prestart Checks Subaru-Powered Units Oil CheckOil Engine Prestart Checks Kohler-Powered Units FullTo improve cold weather starting + − + − Installing Exhaust PipeConnecting Or Replacing the Battery Connect negative − battery cable lastConnecting To Weld Output Terminals Stop engine Failure to properly connectTools Needed 3/4 100 150 200 250 Selecting Weld Cable Sizes150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 mFine Control Engine Control Switch− Operating the Welding Generator Front Panel ControlsFrequently Cold Weather Engine OperationInfrequently LoadedTypical Stick Welding Connections And Control Settings Stop engineElectrode Standard Receptacles − Operating Auxiliary EquipmentReceptacle Simultaneous Weld And PowerWiring Optional 240 Volt Plug Current Available in Amperes 240Maintenance Label Subaru-Powered Units − Maintenance SUBARU-POWERED Units200 Routine Maintenance Subaru-Powered UnitsStop engine before maintaining 100Servicing Air Cleaner Subaru-Powered Units Servicing Optional Spark Arrestor Subaru-Powered UnitsStop engine and let cool Oil Drain Valve Oil Filter Oil Fill Oil CheckIdle Speed Adjustment Adjusting Engine Speed Subaru-Powered UnitsOverload Protection Subaru-Powered Units Stop engine. Disconnect negative − battery cableFuse F1 See Section Maintenance Label Kohler-Powered Units − Maintenance − KOHLER-POWERED UnitsHours Nl Weld Cables ~ Slip Rings Nl Brushes OM-240 438 Routine Maintenance Kohler-Powered UnitsServicing Air Cleaner Kohler−Powered Units Full Before adding oil Running engine Stop engine and let cool Oil Drain Valve2 ID x 7 in Hose Oil Filter Close valve and valve capTurn idle speed screw for fine ad- justments Adjusting Engine Speed Kohler-Powered UnitsAdjustment Nut Loosen lock nut. Turn adjustmentOverload Protection Kohler-Powered Units Servicing Optional Spark Arrestor Kohler-Powered UnitsIf a fuse opens, it usually indi Trouble Remedy − Troubleshooting Welding Troubleshooting Generator Power TroubleshootingEngine Troubleshooting Check receptacle wiring and connectionsCheck fuel level Recommended Spare Parts − Parts ListControl switch S2, and throttle solenoid TS1 Recommended Spare PartsSOCKET/WRENCH Selection Table Standard Metric Circuit Diagram For Welding Generator − Electrical Diagrams240 424-A Selecting Equipment − Generator Power GuidelinesElectrical codes Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Use ground device as statedFarm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x 1000 / Volts = Starting Amperage Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsTional, state, and local codes Typical Connections To Supply Standby PowerSelecting Extension Cord Use Shortest Cord Possible Tools Needed Equipment Needed Piece Weld current can damage Stick Welding Procedure− Stick Welding Smaw Guidelines Electrode touches workTapping Technique Electrode and Amperage Selection ChartStriking an Arc Scratch TechniqueGroove Welds Fillet Welds Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Positioning Electrode HolderConditions That Affect Weld Bead Shape Electrode Movement During WeldingElectrode Angle Butt Joints Lap JointTee Joint Possible Causes Corrective Actions TroubleshootingWeld Test To 3 51-76 mm .4 mmLack of Penetration Good Penetration Good Penetration Excessive PenetrationMetal remains OM-240 438 OM-240 438 OM-240 438 Service SupportAssistance Hobart Welding Products Contact your Distributor for

SOCKET/WRENCH SELECTION TABLE

(U.S. STANDARD)

(METRIC)