Miller Electric XR A, XR W manual Head Tube Assembly Of Pistol-Grip Gun

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.Hardware is common and

not available unless listed.	8
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Ref. 800 434-G

		Figure 8-5. Head Tube Assembly Of Pistol-Grip Gun
	Item	Part	Description
	No.	No.	Description	Quantity
			Figure 8-5. Head Tube Assembly Of Pistol-Grip Gun (Figure 8-4Item 15)

. .	1	199 613	. . Nozzle, Brass 5/8 In Orifice Tapered	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. .	2	. . . . . . .	. . . Tip, Fastip (See Section 9)	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. .	3	227 749	. . Diffuser, .281/.312 Od Collar Fastip 1/8 Rec Edge		1
. .	4	232 284	. . Insulator, Nozzle Collared Diffuser	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. .	5	219 794	. . Jacket, Outer Insulating	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. .	6	219 795	. . Insulator, Barrel Pistol	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. .	7	219 796	. . Head Tube, Air Pistol (Brazed)	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. .	8	134 800	. . O-ring, .614 Id X .070cs	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	2
. .	9	203 675	. . Manifold, Water (15w & 30w Models) (Includes)		1
. . 10		175 946	. . . . O-ring, .614 Id X .070cs	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	2
. . 11		135 128	. . Screw, Cap Stl Sch 6-32 X 1.000 (15, 30w Models)		2
. . 12		231 532	. . Head Tube Assy, Water Cooled Pistol HD	(15, 30w Models) (Includes) . .	1
. . 13		220 209	. . . . Jacket, Outer Insulating	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. . 14		220 216	. . . . Washer, Flat .594idx1.375odx.125t Black Vulc Fbr		1
. . 15		220 210	. . . . Head Tube, Water Pistol (Brazed)	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
. . 16		180 966	. . . . O-ring, .926 Id X .070 Cs 70 Duro Quadring		4
. . 17		212 156	. . Liner, Phos Bronze .030-1/16 Wire X 7.313		1

To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor.

OM-1581 Page 51

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Contents

File MIG Gmaw OM-1581137 532YProcesses DescriptionFrom Miller to You Table of Contents Spot Controls Optional TroubleshootingElectric 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 EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique 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 sécuritéDuty Cycle And Overheating − SpecificationsWire Feeder Specifications Gun Specifications− Installation Constant Voltage CV Weld- ing Power Source Plug Top Cover Triangular Boss Removing Top Cover Of Pistol Grip GunPush door back into original posi- tion to close Air-Cooled Gun Connections Water-Cooled Gun Connections Regulator Air-Cooled Feeder ConnectionsSupply Fitting On Regulator Water-Cooled Feeder ConnectionsTop View Rear Panel Return Fitting OnVoltage Sensing Lead Connections Reinstall right side panel11 VAC/Contactor Control Plug Information Source, and install plug onto Pins a & B of PLG5Or -4, install 5-pin or Receptacle on welding powerInstalling Wire Spool Threading Welding Wire Through Feeder Coolant Guidelines Threading Welding Wire Through GunAdjusting Wire Feed Starting Speed Work And Voltage Sensing Cable Clamps Safety Equipment− Operation Front Panel Controls Of Feeder Air-Cooled Model ShownVoltage/Wire Speed Switch And Meter Optional Jog SwitchRun-In Speed Control Spot Controls Optional Power SwitchRemote Voltage Control Optional Internal Controls Flowmeter OptionalSequence Of Gas Metal Arc Welding Gmaw − Continuous Or Spot Gun ControlsShielding Gas Coolant Supply For Water-Cooled Models OnlyMonths − Maintenance & TroubleshootingRoutine Maintenance Turn Off all power before maintainingChanging Or Cleaning Gun Drive Roll Changing Feeder Drive Roll And Wire Inlet Guide Close pressure roll assembly. Close and latch door Removing Diffuser In Air And Water-Cooled Pistol-Grip Guns Changing Gun Contact TipDrive Roll Collet Nut Turn Off welding power source and wire feederReplacing The Liner Split EndClose gun pressure roll assembly and reinstall gun cover Replacing Hub AssemblyWater Flow Switch Optional For Water-Cooled Models Adjusting Hub TensionOverload Protection Wire Feeder Trouble TroubleshootingFilter, and clean fittings see Section Reinstall current pick-up tab if applicable see SectionGun Trouble Circuit Diagram For Wire Feeder − Electrical DiagramsCircuit Diagram For Gun OM-1581 12 13 9 10 17 18 17 − Parts List45 46 Dia Part Description Quantity Mkgs CB1 Includes Items Motor & Wire Drive -1 ItemPanel, Front w/Components Water-Cooled Model Illustrated Panel, Front w/Components -1 Item Items 24 38FigIncludes PLG20 136 Head Tube Assembly Of Pistol-Grip Gun Number − Parts List Including ConsumablesExtra Heavy Duty FasTiptContact Tips Heavy Duty FasTiptContact TipsTapered FasTipt Contact Tips Head Tube Assemblies Gas DiffusersInsulators Barrel AssembliesYour distributor also gives ServiceSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact