Python 232-8 series Owner's Manual

450 Ampere Water Cooled Push-Pull Welding Guns

Safety Considerations.........................................................................i-iii Installation................................................................................Section A Technical Specifications......................................................................................1 Support Equipment Required..............................................................................1 Gun Lead Connections.......................................................................................1 Operation..................................................................................Section B General...............................................................................................................2 Controls and Settings..........................................................................................2 Trigger Adjustment..............................................................................................2 Drive Roll and Idler Rolls....................................................................................3 Accessories..............................................................................Section C Optional Kits........................................................................................................4 Snake Skins........................................................................................................4 Contact Tips........................................................................................................5 Gas Cups............................................................................................................5 Barrels.................................................................................................................6 Maintenance.............................................................................Section D Periodic Maintenance.........................................................................................7 Recommended Spare Parts List.........................................................................8 Troubleshooting........................................................................Section E Troubleshooting Guide......................................................................................10 Testing The Gun................................................................................................10 Appendices...............................................................................Section F Diagrams / Parts List......................................................................................... 11 Mechanical........................................................................................................12 Electrical...........................................................................................................30 Safety Warnings Warranty

European Community (CE) Products Note This information is provided for units with CE certification (see rating label on unit). Manufacturer’s Name: MK Products, Inc. 16882 Armstrong Ave. Irvine, CA 92606 Declares that the product: Python® Lincoln Compatible conforms to the following Directives and Standards: Directives Low Voltage Directive: 2006/95/EC Electromagnetic Compatibility (EMC) Directive: 2004/108/EC Standards Electromagnetic Compatibility, (EMC): EN 60974-10: 2007 Torches And Guns For Arc Welding, EN 60974-7: 2005

Section A Installation Technical Specifications Wire Capacity .030" - .045" (0.6mm - 1.2mm) solid and hard wire .030" - 1/16" (0.8mm - 1.6mm) aluminum and cored wire Wire Speed 800 IPM (20.3 mpm) Max. at rated feeder Input Voltage (120VAC / 42VAC) Duty Cycle - 60% (All ratings are using Argon Gas) 225 Amps/25 Volts Air Cooled 450 Amps/25 Volts Water Cooled Support Equipment Required • C.V. or C.C. Power Source of sufficient capacity for your needs. • Regulated gas supply and hoses. • Properly sized power leads from power source to wire feeder and ground. • Water source and hose capable of providing a minimum of 1 quart (.95 liter) / min. at 45 p.s.i. when using water cooled guns. Coolant Recommendations Use Cobra Coolant (Aluminum Protection), P/N 931-0060. Cobra Coolant does not contain reactive sulphur or chlorine and does not react with copper, brass or aluminum. The coolant flow rate should be a minimum of 10 GPH (1 qt/min) between 35 and 45psi. Contact the re-circulator manufacturer for specifications on pressure. Gun Lead Connections Power Cable - Air Cooled A #2 power cable is used on the Python Lincoln Compatible gun. The gun and Power Pin ends of the cable are stripped to the copper strands and wrapped with a copper strip. A setscrew holds the cable securely in the gun body and in the Power Manifold with torque requirements of 55-60 in-lb. Power Cable - Water Cooled Python Lincoln Compatible water cooled gun utilizes a power/water cable with a #6 AWG cable inside a 5/16” diameter hose. When water is used with this cable and the #10 water cooled gas cup (P/N 621-0065), the system is rated at 450 amps @ 60% duty cycle. The gun end is threaded into the gun body.These connections utilize a conductive sealant and are tightened with torque requirements of 100 + 5 IN-LB. Conduit The Python Lincoln Compatible comes standard with a poly-lined conduit, for feeding aluminum wire. The longer fitting with a shallow groove is used on the gun end. A set screw located on top of the gun handle secures the conduit in place. The cabinet end of the conduit is secured into the Power Pin connector with a set screw. Gas Hose The BLACK gas hose is pushed over a barbed fitting on the end of the gun body and secured by twisting the hose retainer to the end of the hose (shown below). The opposite end of the BLACK hose is pushed over a barbed fitting in the Power Pin. The hose retainer is re-usable and can be removed and re-installed as needed.

Coolant Connections If so equipped, the ends of the coolant hose push over a barbed fitting on the end of the gun body and are secured by twisting the hose retainer to the end of the hose. The hose retainer is re-usable and can be removed and re-installed as needed. The BLUE coolant supply hose pushes over a barbed fitting on the end of the gun body and is secured by twisting the hose retainer to the end of the hose. The hose retainer is re-usable and can be removed and re-installed as needed.The opposite end of the BLUE hose pushes into a threaded coolant fitting. The RED coolant return hose pushes over the barbed fitting in the Power Manifold. The opposite end of the RED hose pushes into a threaded return hose of the coolant recirculator. Both threaded fittings on the end of the BLUE and RED hoses are standard left-hand thread. MK Products compatible guns have interchangeable fittings, so you can match as needed for your cooler. Both types of fittings require a hose retainer. Control Cable A multi-conductor control cable is used on the Python Lincoln Compatible. The gun end of the cable is secured with a cable clamp and the wires are connected to the potentiometer, the micro switch, the motor and the gun body mechanically. Slack is left in the electric cable as it exits the back of the gun to prevent cable and/or wire breakage. The cabinet end has a seven pin "W" clocked amphenol connector. Section B Operation General The Python Lincoln Compatible gun maintains a constant, steady, uniform wire feed speed, regardless of curved or looped wire conduit. The constant push exerted by the slave motor in the cabinet, combined with the pull of the gun motor, causes the wire to literally float friction-free through the wire conduit. The 24VDC gun motor is controlled by a three and three-quarter (3 3/4) turn potentiometer in the gun handle. Controls and Settings Potentiometer The laterally-positioned potentiometer is located in the lower end of the handle, providing up to 800 ipm with 3 3/4 turns. Micro Switch The micro switch assembly consists of the micro switch, and leads. Trigger Sensitivity The amount of trigger level travel can be shortened for a "quicker" or "more responsive" action. A more sensitive trigger lever is produced by reducing the gap between the trigger lever and the micro-switch lever. By turning-in the Trigger Sensitivity Adjustment Screw, it closed the gap between the trigger lever and the micro-switch lever. 431-1898 5/16” Hose Retainer 431-1910 Quick Connect Fitting 431-1893* Nipple 753-3379* Left-Hand Threaded Fitting *Must be ordered together

This well enable the operator to increase the sensitivity of the trigger lever. Sensitivity Adjustment With the wire feeder turned on (with or without welding wire loaded), turn the screw in until the micro-switch is activated. Once activated, the gun and wire feeder motors will begin feeding wire. Retract the screw accordingly until the system is deactivated and adjusted to the operators' liking. Drive Roll and Idler Rolls General The Python Lincoln Compatible gun comes standard with a knurled drive roll and a grooved idler roll, which will handle aluminum wire with diameters of .030 to 1/16 inch and steel from .030 to .045 inches. Optional insulated V-groove drive rolls are also available for aluminum wire if desired (see Optional Kits). Drive roll tension is accomplished with a unique spring-loaded pressure screw. The Python Lincoln Compatible comes from the factory with the pressure adjustment screw preset. NO ADJUSTMENT is required for all sizes and types of wires. Drive Roll Installation/Removal NOTE: Neither of the handles needs to be removed to access the Drive or Idler Rolls. 1. Pull the Cam Lever away from the idler roll. This will relieve the pressure against the drive roll (as shown in Figure 1). 2. Align the Drive Roll Removal Tool (P/N 931-0100) over the flats of the drive roll (as shown in Figure 2). Hold the gun with one hand or on a table top, with the other hand give the Removal Tool a quick snap-turn in the CLOCKWISE DIRECTION. 3. Once the drive roll is loose, continue to spin drive roll in the clockwise direction to remove the drive roll from the gun. 4. Install a new drive roll on the left-hand threaded shaft. The drive roll will self-tighten when it is feeding wire. Idler Roll Installation and Removal (Reference Figure 3) 1. Using a slot type screwdriver, loosen idler screw, taking care not to lose lock washer under idler roll. 2. Insert new idler roll and lock washer onto screw, insuring that idler groove is toward top and lock washer is beneath. 3. Tighten. NOTE: Lock washer must be under idler roll or it will not turn freely. Figure 3 Cam Lever Figure 1 Figure 2

Section C Accessories/Options Insulated Drive Roll Kits are used to prevent preheating of the wire which may soften it and clog the liner. This picking up of current at the drive rolls rather than at the contact tip is usually not a problem unless using too large of a contact tip or excessively oxidized aluminum wire. Insulated Groove Drive Roll Kit...................................................... 005-0715 For .030" (0.8mm) dia. aluminum wire. Includes insulated groove drive roll and insulated idler roll assy. Insulated Groove Drive Roll Kit...................................................... 005-0716 For .035" (0.9mm) dia. aluminum wire. Includes insulated groove drive roll and insulated idler roll assy. Insulated Groove Drive Roll Kit...................................................... 005-0717 For .040" (1.0mm) dia. aluminum wire. Includes insulated groove drive roll and insulated idler roll assy. Insulated Groove Drive Roll Kit...................................................... 005-0718 For 3/64" (1.2mm) dia. aluminum wire. Includes insulated groove drive roll and insulated idler roll assy. Insulated Groove Drive Roll Kit....................................................... 005-0719 For .062" (1.6mm) dia. aluminum wire. Includes insulated groove drive roll and insulated idler roll assy. Handle Kit.........................................................................................005-0699 Includes left and right handles, screws and drive roll door. Trigger Kit.........................................................................................005-0694 Trigger adjustment kit includes a spring and sensitivity adjustment screw replacement for all Python Lincoln Compatible guns. Micro Switch Kit...............................................................................005-0701 Replacement micro switch assembly for all Python Lincoln Compatible guns. Potentiometer Kit.............................................................................005-0695 Replacement potentiometer assembly for all Python Lincoln Compatible guns. Conduits Flat spiral steel conduit for steel & cored wire. 15 ft./4.5m......................................................................................615-0621-15 25 ft./7.6m......................................................................................615-0621-25 35 ft./10.7m....................................................................................615-0621-35 50 ft./15.2m....................................................................................615-0621-50 Optional nickel tube liner................................................................. 431-2030 Snake Skins® Snake Skin® protective covers are now standard on all guns. You may order spare replacement covers to protect the lead assy of the gun when the factory one becomes damaged or worn. It can easily be replaced in the field by means of Velcro©. Snake Skin Cover 13ft (for 15ft leads).........................................931-0110 Snake Skin Cover 23ft (for 25ft leads)........................................ 931-0122 Snake Skin Cover 33ft (for 35ft leads)........................................ 931-0132 Snake Skin Cover 48ft (for 50ft leads)........................................ 931-0123

Finned Copper Cups Finned Copper Gas Cups Cup Size Cup I.D. Part No. No. 6 3/8” (9.5mm) 621-0248 No. 8 1/2” (12.7mm) 621-0249 No. 10 5/8” (15.8mm) 621-0250* Heavy Duty Finned Copper Gas Cups Cup Size Cup I.D. Part No. 10 5/8" (15.8mm) 621-0251 12 3/4" (19.0mm) 621-0252 *Standard - furnished with Air Cooled gun Contact Tips To remove contact tip when using full water cooled gas cup (P/N 621-0065), contact tip removal tool (P/N 931-0044) must be used. Heavy Duty Contact Tip - 3/8" Diameter* Wire Size Tip ID Arc Tip Length Part No. .030” (0.8mm) .041” (1.0mm) Spray 1.57” (39.9mm) 621-0390-25 Short 1.82” (46.2mm) 621-0396-25 .035” (0.9mm) .044” (1.1mm) Spray 1.57” (39.9mm) 621-0391-25 621-0391-250† 621-0391-500†† .035" (0.9mm) .044" (1.1mm) Short 1.82” (46.2mm) 621-0397-25 .045" (1.1mm) .053" (1.35mm) Short 1.82” (46.2mm) 621-0398-25 3/64” (1.2mm) .053” (1.35mm) Spray 1.57” (39.9mm) 621-0392-25 621-0392-250† 621-0392-500†† 3/64” (1.2mm) .060” (1.5mm) Spray 1.57” (39.9mm) 621-0393-25** 621-0393-250† 621-0393-500†† 1/16” (1.6mm) .074” (1.9mm) Spray 1.57” (39.9mm) 621-0394-25 .085” (2.16mm) Spray 621-0395-25 *Use of tip removal tool is recommended † Also sold in quantities of 250 **This size tip furnished with gun † † Also sold in quantities of 500 Spring Loaded Contact Tip - 3/8” Diameter Wire Size Tip ID Arc Tip Length Qty Part Number .030” (0.8 mm) .041” (1.0 mm) Spray 1.57” (39.9 mm) EA 621-0331 .035” (0.9 mm) .044” (1.1 mm) Spray 1.57” (39.9 mm) EA 621-0332 3/64” (1.2 mm) .060” (1.5 mm) Spray 1.57” (39.9 mm) EA 621-0334 1/16” (1.6 mm) .074” (1.9 mm) Spray 1.57” (39.9 mm) EA 621-0335 3/8" Diameter Flex Barrel Tip - Recommended for Flex Barrel* Wire Size Tip ID Arc Tip Length Qty Part Number .030” (0.8 mm) .041” (1 mm) Spray 1.0” (25.4 mm) EA 621-0480-25 .035” (0.9 mm) .044” (1.1 mm) Spray 1.0” (25.4 mm) EA 621-0481-25 .045" (1.1mm) .053" (1.37 mm) Short 1.0” (25.4 mm) EA 621-0482-25 3/64” (1.2 mm) .060” (1.5 mm) Spray 1.0” (25.4 mm) EA 621-0483-25 * Used with Flex Barrel cups 621-0465 and 621-0466, on Air Cooled models only

Barrel Assemblies All barrels are rated at 60% duty cycle. Barrels Air Cooled The Python Lincoln Compatible air cooled gun comes standard with a 60˚ curved barrel. The barrel assembly locks to the gun body using the patented EZ Lock™ system. Water Cooled The Python Lincoln Compatible water cooled gun comes standard with a 60˚ curved water cooled barrel assembly. Optional 6", 12” and 18” Straight and Curved Barrel Assemblies 12" Straight, Air Cooled Barrel Assembly........................................... 003-2332 12" Curved, 45° Air Cooled Barrel Assembly...................................... 003-2333 12” Straight, Water Cooled Barrel Assembly...................................... 003-2318 12” Curved, 45° Water Cooled Barrel Assembly................................. 003-2319 18" Straight, Air Cooled Barrel Assembly........................................... 003-2334 18" Curved, 45° Air Cooled Barrel Assembly...................................... 003-2335 300 Amps Water Cooled (P/N 003-2380) Optional on WC 200Amp Air Cooled Only (P/N 003-2495-12) Optional on AC 225 Amps Air Cooled, 60° (P/N 003-2272) Standard on AC 450 Amps Water Cooled, 60° (P/N 003-2317) Standard on WC 225 Amp Air/Water Cooled, 45° (P/N 003-2152) Optional on AC Gun Barrel Liners Part Number Description 931-0137 Teflon liner package, 5 pieces 615-0338 Steel wire only, .030 - .1/16" (0.8 - 0.9mm) 621-0424 Python tip extender (Air cooled barrel only) 615-0250 Spiral steel liner for tip extender Water Cooled Cups for Python Lincoln Compatible Water Cooled Gun Cup Size Cup I.D. Part No. No. 10* 5/8” (15.9mm) 621-0065 *Standard - furnished with gun Flex Barrel Gas Cups* Cup Size Cup I.D. Part No. 8 1/2” (12.7mm) 621-0465 10 5/8" (15.8mm) 621-0466 *Works with Air Cooled models only Air Cooled Cups for Water Cooled Python Lincoln Compatible Gun Cup Size Cup I.D. Part No. No. 6 3/8” (9.5mm) 621-0170 No. 8 1/2” (12.7mm) 621-0159 No. 10 5/8” (15.8mm) 621-0160 To use air cooled gas cups, you must use a cup retaining nut (449-0193) and a water cooled cup adapter (621-0101). Air Cooled Cup Water Cooled Cup Adapter Water Cooled Cup Tip Extender

18” Straight Water Cooled Barrel Assembly....................................... 003-2320 18” Curved, 45° Water Cooled Barrel Assembly................................. 003-2321 12" Flex Air Cooled Barrel Assembly.............................................003-2495-12 18" Flex Air Cooled Barrel Assembly.............................................003-2495-18 24" Flex Air Cooled Barrel Assembly.............................................003-2495-24 36" Flex Air Cooled Barrel Assembly.............................................003-2495-36 Optional 300 Amp Water Cooled Barrel Assemblies Straight, Water Cooled Barrel Assembly, 300 Amps........................... 003-2380 Curved, 45° Water Cooled Barrel Assembly, 300 Amps..................... 003-2381 Curved, 60° Water cooled Barrel Assembly, 300 Amps...................... 003-2382 Barrel Removal and Installation To remove the barrel assembly, loosen the patented EZ Lock™ Taper lock nut until it is clear of the threads. Pull barrel out of the gun body. To replace a barrel assembly, open the drive and idler roll door and seat the barrel assembly until the inlet guide is almost touching the drive and idler roll and the rear face of the barrel is flush with the aluminum body block. Take care not to damage the “O” rings when inserting into the body. Tighten taper lock nut assembly firmly so that barrel cannot rotate. Barrel Rotation To rotate a barrel assembly, loosen the patented EZ Lock™ Taper lock nut assembly no more than 1 turn. Rotate barrel to the position of your choice and retighten taper lock nut assembly firmly so that the barrel cannot rotate. WARNING: Do not attempt to weld without the barrel being tightly secured in the gun body, or damage to the barrel or body may result. Section D Maintenance Periodic Maintenance Your Cobramatic® System is designed to provide years of reliable service. Maintenance of the gun will normally consist of a general cleaning of the wire guide system, including barrels, drive rolls, and conduits at regular intervals. Remove spatter build-up from inside of nozzles with a hardwood stick. The only parts on the Cobramatic® system that are subject to normal wear are the conduit, contact tips, gas cups, front body liners, wire guides, drive and idler rolls. A supply of these parts should be maintained on hand. The number of units in operation and the importance of minimal “down time” will determine to what extent spare parts should be stocked on hand. See the “Recommended Spare Parts List” for the most commonly replaced parts. If repairs do become necessary, qualified shop maintenance personnel can easily replace any part. Maintenance Tools Tool Part Number Contact Tip Removal Tool 931-0044 Drive Roll Removal Tool 931-0100

Recommended Spare Parts List Qty. Part No. Description 1 615-0620-15 Conduit -15 ft 1 615-0620-25 Conduit - 25 ft 1 615-0620-35 Conduit - 35 ft 1 615-0620-50 Conduit - 50 ft 1 437-0253 Drive Roll Door 2 005-0694 Trigger Assy. Kit 2 005-0695 Potentiometer Kit 1 005-0699 Handle Kit 2 005-0701 Micro-Switch Kit 10 511-0101 Drive Roll 5 005-0686 Idler Roll Kit Micro Switch Assembly 005-0701 DRIVE ROLL REMOVAL TOOL 931-0100 IDLER ROLL 005-0686 KNURLED DRIVE ROLL 511-0101

Section E Troubleshooting Trouble Cause Remedy No wire feed at gun, feeder not operating, i.e. no slave motor or brake solenoid. 115/42 VAC Control fuse in feeder/Control box blown. Replace fuse. Micro-switch defective/not being activated. Replace switch. Check switch for operation. Broken electrical cable. Check micro-switch wires for continuity. No wire feed at gun, feeder operating properly. 24 VAC Control fuse in feeder/Control box blown. Check motor leads for shorts; then replace fuse. Bad potentiometer. Check potentiometer with meter. Broken Electrical Cable. Check motor and potentiometer wires for continuity. Bad Speed control/PCB See specific cabinet/ control box owners manual for speed control operation. Wire feeds, but welding wire is not energized. Loose or no cable connections. Check all power connections. Contactor control cable loose or in wrong position. Check power supply owners manual for location and type of contactor signal required. Welding power source. Check power source. Wire feeds erratically. Dirty or worn conduit. Blow out or replace conduit. Wrong size contact tip. See Contact tip table. Idler roll stuck. Check for lock washer under idler roll, or replace if damaged. Wire feeds one speed only. Bad potentiometer. Check with meter. Broken electrical cable. Check potentiometer wires for continuity or short. Bad speed control. See specific cabinet/ control owners manual for speed control operation. Wire walks out of drive rolls. Idler roll upside-down. Place groove in idler roll toward top. Rear wire guide missing. Replace wire guide.

Troubleshooting Guide Regardless of which gun or feeder used, all MK Products’ push-pull guns operate on the same principle. The slave motor in the feeder runs at a fast, constant speed, but has very low torque. It is always trying to feed more wire than the gun motor wants, and when the motor gets all it wants, it slows the slave motor, preventing a bird’s nest. Because of the low torque produced by the slave motor, a brake system is used to prevent wire overrun rather than tension. The drag adjustment in the feeder is used simply to keep the wire slightly taut, so it will not pull off the spool while feeding wire. The high torque 24VDC gun motor is controlled by a solid state speed control located in the feeder, and a pot located in the gun. The gun motor, potentiometer, and micro switch are connected to the cabinet/control box via a control cable and Amphenol connector. If this cable becomes damaged, a variety of symptoms can occur, depending on which wire(s) break. To test, check each wire for continuity and shorts. Remember, the micro switch in the gun activates both the slave motor and gun motor circuits in the cabinet. Therefore, if the slave motor and brake solenoid operate, but the gun does not, look more toward the gun motor’s 24V circuits, speed control, control cable, or the gun motor. If nothing operates, look more toward the slave motor’s input, micro switch leads, or micro switch. Testing The Gun Reference the "W" clocked gun wiring diagram on the Python Lincoln Compatible Electrical Diagram for information about pin-outs and locations. Motor Check Remove the gun connector from the cabinet. Using the gun Amphenol connector, check the resistance across pins “A” and “B” (motor leads). If an open circuit (more than K ohms) or short exist (less than 2 ohms) exists, check the motor leads and motor independently. Testing the Potentiometer - “W” Clocked Using the gun amphenol connector, check the resistance across pin “D” (wiper) and pin “C”. The resistance should vary from 0 - 5K ohms as the potentiometer is turned. Check the resistance across pin “D” (wiper) and pin “G”. The resistance should vary from 5K - 0 ohms as the potentiometer is turned. Testing the Micro Switch Using the gun Amphenol connector, check for continuity across pins “E” and “F” when the trigger is pressed. For 7 Pin only

Appendices Diagrams / Parts List Exploded View........................................................................... 12 Bill of Material............................................................................ 13 Front Body Assembly ................................................................ 14 Rear Body Assembly, Air Cooled............................................... 15 Rear Body Assembly, Water Cooled.......................................... 16 Barrel Assembly, Air Cooled...................................................... 17 Barrel Assembly, Water Cooled................................................. 18 Cup Insulator and O-Ring Maintenance.................................... 19 Lead Assembly, Air Cooled........................................................ 20 Bill of Material............................................................................ 21 Lead Assembly, Water Cooled................................................... 22 Bill of Material............................................................................ 23 Spiral Wrap Installation.............................................................. 24 Power Pin Adapter Assembly.................................................... 27 Power Manifold, Air Cooled....................................................... 28 Power Manifold, Water Cooled.................................................. 29 Electrical.................................................................................... 30

Python Lincoln Compatible Head Assembly Apply Thread Locking Compound to contact surface for installation Apply Compound Noalox to contact surface for installation Apply Compound grease to contact surface for installation

Python Lincoln Compatible Head Assembly No. Qty. Part No. Description No. Qty. Part No. Description 1 1 002-0629 Assy Cam Idler Arm 13 9 338-0022 Scr SHC 6-32 x 3/8 SST 2 1 005-0694 Trigger Kit 14 4 333-0260 Wshr Spr LK #6 SST 3 1 003-2125 Assy Knob Pot 15 1 338-0153 Scr SHC 1-72 x 3/8 SST 4 1 005-0701 Micro Swx Kit 16 1 405-0706 Label 5 1 003-2271 Front Body Assy, A/C 17 1 421-0018 Pin Dowel 3/32 x 7/8 6 1 003-2153 Assy Boot Torch 18 1 431-1622 Scr Shoulder 1/8 x 4-40 7 1 005-0695 Assy Speed Control Pot Kit 19 1 431-1637 Screw Hex 3/8-20 x 3/8 8 1 003-2289 Rear Body Assy, A/C 20 1 435-1585 Strap Motor Python 9 1 211-0077 Motor 24VDC, Standard 21 1 005-0699 Handle Kit: Includes line items 13,18, and 23 1 211-0080 Motor 24VDC, Hi-Speed (optional) 22 10 2 319-0254 Scr FH Phil 82 4-40 x 3/8 SST 23 1 437-0253 Door Molded Python 11 1 319-0258 Scr FH Phil 82 4-40 5/8 SST 24 1 437-0268 Cover Knob Python 12 2 320-0101 Scr Button 4-40 x 3/16 SST 25 0.30 ft. 737-0048 Tube, Insulation 9 AWG, Clear

Front Body Assembly No. Qty. Part No. Description 1 - - Not available separately 2 - - 3* 1 325-0206 10-24 x 3/8 PH Screw 4* 1 333-0082 # 10 Lock Washer 5 1 419-0092 0.29 x 0.047 x 0.32 Comp. Spring 6 1 421-0525 1/8 x 7/8 SST Dowel Pin 7 1 431-1663 Idler Adjusting Screw 8 1 431-1598 Idler Arm 9* 1 511-0001 Idler Wire Feed Assembly 10 1 511-0101 Drive roll * Items 3, 4 & 9 available as package kit: Part number 005-0686 Items 3, 4 & 9 available as package kit: P/N 005-0686 Python Lincoln Compatible Front Body Assembly P/N 003-2271 (Air Cooled) P/N 003-2108 (Water Cooled)

Air Cooled Rear Body Assembly No. Qty. Part No. Description 1 - - Not available separately 2 2 303-0096 O-Ring .145 ID x .07 W 3 1 321-1082 Set Screw Flat 1/4-20 5/16 SST 4 1 321-1104 Set Screw Mod Conduit 5 1 336-0020 Scr PH Phil 4-40 x 5/16 SST 6 1 411-0243 Tie Wrap Scr 4 apply silicone lubricant for installation Python Lincoln Compatible Rear Body Assembly, Air Cooled P/N 003-2289

apply silicone lubricant for installation Water Cooled Rear Body Assembly No. Qty. Part No. Description 1 - - Not available separately 2 6 303-0096 O-Ring .145 ID x .07 W 3 1 321-1104 Set Screw Mod Conduit 4 1 336-0020 Scr PH Phil 4-40 x 5/16 SST 5 1 411-0243 Tie Wrap Scr 4 Python Lincoln Compatible Rear Assembly, Water Cooled P/N 003-2287

Python Lincoln Compatible Barrel Assembly, Air Cooled P/N 003-2272 *Apply silicone lubricant to items 4 and 5 before installing. Air Cooled 60° Curved Barrel Assembly No. Qty. Part Number Description 1 - - Not available separately 2 1 005-0696 Taper Lock Kit 3 1 261-0143 Insulator Barrel 4* 2 303-0010 O-Ring .489 ID x .07 W 5* 2 303-0094 O-Ring .301 ID x .07 W 6 1 313-0091 Retaining Ring 5/8 Shaft 7 1 431-1774 Cup Insulator Barrel 8 0.63 ft 615-0178 Liner Tef 0.084 ID x 0.174 OD 9 1 621-0250 Assy Cup Copper Finned #10 10 1 621-0393 Tip HD Spray .060

*Apply silicone lubricant to items 5, and 6 before installing. Water Cooled 60° Curved Barrel Assembly No. Qty. Part No. Description 1 - - Not available separately 2 1 005-0696 Taper Lock Kit 3 1 261-0141 Insulator Barrel 4 1 261-0381 Insulator Cup with five O-Rings 5* 8 303-0010 O-Ring .489 ID x .07 W 6* 2 303-0094 O-Ring .301 ID x .07 W 7 1 313-0091 Retaining Ring 5/8 Shaft 8 1 431-0977 Retaining Nut 9 1 431-1774 Cup Insulator Barrel 10 0.70 ft. 615-0178 Liner Tef 0.084 ID x 0.174 OD 11 1 621-0065 Cup #10 Assy 12 1 621-0393 Tip HD Spray .060 Python Lincoln Compatible Barrel Assembly, Water Cooled P/N 003-2317

Insulator Barrel CUP INSULATOR AND O-RING MAINTENANCE CAUTION: Power-off the coolant pump before disassembling water-cooled barrels. 1. Unscrew Retaining Nut and slide back on barrel. 2. Using a firm pull and twist action, the Water-Cooled Gas Cup or Air-Cooled Gas Cup Assembly can be removed from the Cup Insulator. 3. Inspect the Cup Insulator and o-rings (included with Insulator) for wear and proper lubrication. It is considered good practice to replace all o-rings at the same time. 4. To remove the Cup Insulator, it must be unscrewed and pulled from the barrel. Use a rag or towel (due to o-ring lubrication) and wrap it around the Cup Insulator. Unscrew and pull when completed unthreaded from barrel. Be sure the Insulator is fully unscrewed from the threads. Pulling the Insulator over barrel threads will damage the threads on the Insulator. Inspect o-rings on barrel for wear and lubrication. It is considered good practice to replace all o-rings at the same time. 5. To install the Cup Insulator, it must be pushed all the way onto the barrel then screwed onto the threads. If necessary, place small amount of o-ring lubricant on the inside diameter of the Cup Insulator, this will help it slide onto the barrel. Push the Insulator onto the barrel until it bottoms out, screw onto barrel threads. The Insulator MUST be all the way onto the barrel to avoid assure proper coolant passage and from blocking the gas outlet orifices. 6. Push Water-Cooled Gas Cup or Chrome Nut, Cup Adapter and Gas Cup Assembly onto Cup Insulator. Slide Retaining Nut forward and tighten. Incorrect Installation Correct Installation

Python Lincoln Compatible Lead Assembly Air Cooled

Lead Assembly - Air Cooled No. Qty. Description 15' Part No. 25' Part No. 35' Part No. 50' Part No. 1 1 Assy Boot Torch 003-2153 2 1 Assy Power Manifold, A/C 003-2337 3 1 Assy Power Pin Adapter 003-2346 4 1 Wrap Spiral Cord, 5.5 in 261-0094 5 1 Wrap Spiral Cord, 13 in 261-0094-13 6 1 Snake Skin 931-0110 931-0122 931-0132 931-0123 7 4 Screw SHC 4-40 x 1/2 SST 338-0014 8 4 Tie Wrap .75 x Dia N Blk 411-0045 9* 2 Hose Retainer, 5/16 431-1898 10 1 Handle Kit: includes item 4 005-0385-RED 11 1 12 1 Assy Gas Hose 552-0241-15 552-0241-25 552-0241-35 552-0241-50 13 1 Conduit Tef Tube 615-0620-15 615-0620-25 615-0620-35 615-0620-50 14 - - - 15 - - - 16** 1 Assy Power Cable Global 843-0640-15 843-0640-25 843-0640-35 843-0640-50 1 Ultra Flex Power Cable (optional) 843-0715-15 843-0715-25 843-0715-35 843-0715-50 17 1 Assy Controller Cable 005-0690 005-0691 005-0740 005-0692 * Hose Retainer is re-usable and can be removed and re-installed as needed ** Power Cable includes copper wrap P/N 701-0053-1

Python Lincoln Compatible Lead Assembly Water Cooled

*Hose Retainer is re-usable and can be removed and re-installed as needed Lead Assembly - Water Cooled No. Qty. Description 15' Part No. 25' Part No. 35' Part No. 50' Part No. 1 1 Assy Boot Torch 003-2153 2 1 Assy Power Manifold, W/C 003-2345 3 1 Assy Power Pin Adapter 003-2346 4 1 Wrap Spiral Cord, 5.5 in 261-0094 5 1 Wrap Spiral Cord, 13 in 261-0094-13 6 1 Snake Skin 931-0110 931-0122 931-0132 931-0123 7 4 Screw SHC 4-40 x 1/2 SST 338-0014 8 4 Tie Wrap .75 x Dia N Blk 411-0045 9* 4 Hose Retainer, 5/16 431-1898 10 1 Handle Kit: includes item 7 005-0385-RED 11 1 12 1 Assy Hose Water RED 552-0209 13 1 Assy Hose Water, BLUE 552-0239-15 552-0239-25 552-0239-35 552-0239-50 14 1 Assy Gas Hose 552-0241-15 552-0241-25 552-0241-35 552-0241-50 15 1 Conduit Tef Tube 615-0620-15 615-0620-25 615-0620-35 615-0620-50 16 - - - 17 - - - 18 1 Assy Controller Cable 005-0690 005-0691 005-0740 005-0692 19 1 Assy Power Cable/Water Euro 005-0388-15 005-0388-25 005-0388-35 005-0388-50

Python Lincoln Compatible Lead Assembly Spiral Wrap Installation 033-0929 Gun End, Air Cooled Conduit Spiral Wrap p/n: 261-0094-13 Power Cable

Python Lincoln Compatible Lead Assembly Spiral Wrap Installation 033-0929 Gun End, Water Cooled Conduit Spiral Wrap p/n: 261-0094-13 Power Cable Ring 431-1660

Python Lincoln Compatible Lead Assembly Spiral Wrap Installation 033-0929 Cabinet End, Air and Water Cooled Spiral Wrap p/n: 261-0094

Python Lincoln Compatible Power Pin Adapter Assembly P/N 003-2346 Power Pin Adapter Assembly No. Qty. Part No. Description 1 1 002-0761 Assy Brazed Power Pin Adapter 2 4 303-0010 O-Ring 2-014 .489 ID x .07 W APPLY SILICONE LUBRICANT TO O-RINGS BEFORE INSTALLING

Python Lincoln Compatible Power Manifold Assembly, Air Cooled P/N 003-2337 Air Cooled Power Manifold Assembly No. Qty. Part No. Description 1 1 321-1104 Set Screw Conduit 2 1 321-1082 Set Screw Flat 1/4 - 20 x 3/8 SST 3 1 431-1905 Fitting 1/8 ID x 1/16 - 27 NPT 3 1 431-1936 Power Manifold AC

Python Lincoln Compatible Power Manifold Assembly, Water Cooled P/N 003-2345 Water Cooled Power Manifold Assembly No. Qty. Part No. Description 1 1 321-1104 Set Screw Conduit 2 2 431-1905 Fitting 1/8 ID x 1/16 - 27 NPT 3 1 431-1951 Power Manifold WC 4 1 751-0017 Plug Sealing 4MM x 4MM SST

Python Lincoln Compatible Electrical For 7 Pin only

Irvine, CA 92606 Tel (949)863-1234 Fax (949)474-1428 www.mkproducts.com August 1, 2010 August 1, 2010 LIMITED WARRANTY Effective August 1, 2010 This warranty supersedes all previous MK Products warranties and is exclusive, with no other guarantees or warranties expressed or implied. 16882 Armstrong Ave. Irvine, CA 92606 Tel (949) 863-1234 Fax (949) 474-1428 www.mkproducts.com LIMITED WARRANTY - MK Products Inc., Irvine, California warrants that all new and unused equipment furnished by MK Products is free from defects in workmanship and material as of the time and place of delivery by MK Products. No warranty is made by MK Products with respect to trade accessories or other items manufactured by others. Such trade accessories and other items are sold subject to the warran- ties of their respective manufacturers, if any. MK Products’ warranty does not apply to components having normal useful life of less than one (1) year, such as relay points, wire conduit, tungsten, and welding gun parts that come in contact with the welding wire, including gas cups, gas cup insulators, and contact tips where failure does not result from defect in workmanship or material. MK Products shall, exclusively remedy the limited warranty or any duties with respect to the quality of goods, based upon the following options: (1) repair (2) replacement (3) where authorized in writing by MK Products, the reasonable cost of repair or replacement at our Irvine, California plant. As a matter of general policy only, MK Products may honor an original user’s warranty claims on warranted equipment in the event of failure resulting from a defect within the following periods from the date of delivery of equipment to the original user: 1. Power Supplies and Wire Feed Cabinets ..................3 years 2. Weldheads, Coolers, Positioners, and Push-Pull Guns ...1 year 3. Spool Guns, and Spool Gun Modules ..................... 180 days 4. Repairs/Exchanges/Parts ...................................... 90 days Classification of any item into the foregoing categories shall be at the sole discretion of MK Products. Notification of any failure must be made in writing within 30 days of such failure. A copy of the invoice showing the date of sale must accompany products returned for warranty repair or replacement. All equipment returned to MK Products for service must be properly packaged to guard against damage from shipping. MK Products will not be responsible for any damages resulting from shipping. Normal surface transportation charges (one way) for products returned for warranty repair or replacement will be borne by MK Products, except for products sold to foreign markets. ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND ANY IMPLIED WARRANTY, GUARANTY, OR REPRESENTATION AS TO PERFORMANCE, AND ANY REMEDY FOR BREACH OF CONTRACT WHICH, BUT FOR THIS PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION OF LAW, CUSTOM OF TRADE, OR COURSE OF DEALING, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR PARTICULAR PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT FURNISHED BY MK PRODUCTS, IS EXCLUDED AND DISCLAIMED BY MK PRODUCTS. EXCEPT AS EXPRESSLY PROVIDED BY MK PRODUCTS IN WRITING, MK’s PRODUCTS ARE INTENDED FOR ULTIMATE PURCHASE BY COM- MERCIAL/INDUSTRIAL USERS AND FOR OPERATION BY PERSONS TRAINED AND EXPERIENCED IN THE USE AND MAINTENANCE OF WELDING EQUIPMENT AND NOT FOR CONSUMERS OR CONSUMER USE. MK PRODUCTS’ WARRANTIES DO NOT EXTEND TO, AND NO RE-SELLER IS AUTHORIZED TO EXTEND MK PRODUCTS’ WARRANTIES TO ANY CONSUMER. USE OF OTHER THAN GENUINE MK PRODUCTS’ CONSUMABLES, PARTS, AND ACCESSORIES MAY INVALIDATE YOUR PRODUCT WARRANTY.