Lincoln Electric PANTHER K2874-2 User manual

IM10033
August 2009
PANTHERTM
Push Pull GUN
Models: K2874-1, K2874-2, K2874-3, K2875-2
Safety depends on you. . .
Lincoln arc welding and cutting equipment is
designed and built with safety in mind. However,
your overall safety can be increased by proper
installation...and thoughtful operation on
your part.
DO NOT INSTALL, OPERATE OR
REPAIR THIS EQUIPMENT WITH-
OUT READING THIS MANUAL
AND THE SAFETY PRE-
CAUTIONS CONTAINED
THROUGHOUT.
And, most importantly,
think before you act
and be careful.
OPERATOR’S MANUAL
• World’s Leader in Welding and Cutting Products •
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: [phone] FAX: [phone] WEB SITE: www.lincolnelectric.com
This manual covers equipment which is no
longer in production by The Lincoln Electric Co.
Specications and availability of optional
features may have changed.

THANK YOU FOR SELECTING
A QUALITY PRODUCT BY
LINCOLN ELECTRIC.
PLEASE EXAMINE CARTON AND EQUIPMENT FOR
DAMAGE IMMEDIATELY
When this equipment is shipped, title passes to the purchaser
upon receipt by the carrier. Consequently, claims for material
damaged in shipment must be made by the purchaser against the
transportation company at the time the shipment is received.
SAFETY DEPENDS ON YOU
Lincoln arc welding and cutting equipment is designed and built
with safety in mind. However, your overall safety can be increased
by proper installation ... and thoughtful operation on your part.
DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT
WITHOUT READING THIS MANUAL AND THE SAFETY
PRECAUTIONS CONTAINED THROUGHOUT. And, most importantly,
think before you act and be careful.
This statement appears where the information must be followed
exactly to avoid serious personal injury or loss of life.
This statement appears where the information must be followed
to avoid minor personal injury or damage to this equipment.
KEEP YOUR HEAD OUT OF THE FUMES.
DON’T get too close to the arc.
Use corrective lenses if necessary
to stay a reasonable distance
away from the arc.
READ and obey the Safety Data
Sheet (SDS) and the warning label
that appears on all containers of
welding materials.
USE ENOUGH VENTILATION or
exhaust at the arc, or both, to
keep the fumes and gases from
your breathing zone and the general area.
IN A LARGE ROOM OR OUTDOORS, natural ventilation may be
adequate if you keep your head out of the fumes (See below).
USE NATURAL DRAFTS or fans to keep the fumes away
from your face.
If you develop unusual symptoms, see your supervisor.
Perhaps the welding atmosphere and ventilation system
should be checked.
WEAR CORRECT EYE, EAR &
BODY PROTECTION
PROTECT your eyes and face with welding helmet
properly fitted and with proper grade of filter plate
(See ANSI Z49.1).
PROTECT your body from welding spatter and arc
flash with protective clothing including woolen
clothing, flame-proof apron and gloves, leather
leggings, and high boots.
PROTECT others from splatter, flash, and glare
with protective screens or barriers.
IN SOME AREAS, protection from noise may be appropriate.
BE SURE protective equipment is in good condition.
Also, wear safety glasses in work area
AT ALL TIMES.
SPECIAL SITUATIONS
DO NOT WELD OR CUT containers or materials which previously
had been in contact with hazardous substances unless they are
properly cleaned. This is extremely dangerous.
DO NOT WELD OR CUT painted or plated parts unless special
precautions with ventilation have been taken. They can release
highly toxic fumes or gases.
Additional precautionary measures
PROTECT compressed gas cylinders from excessive heat,
mechanical shocks, and arcs; fasten cylinders so they cannot fall.
BE SURE cylinders are never grounded or part of an
electrical circuit.
REMOVE all potential fire hazards from welding area.
ALWAYS HAVE FIRE FIGHTING EQUIPMENT READY FOR
IMMEDIATE USE AND KNOW HOW TO USE IT.
WARNING
CAUTION
Safety 01 of 04 - 5/16/2018

SECTION A:
WARNINGS
CALIFORNIA PROPOSITION 65 WARNINGS
WARNING: Breathing diesel engine exhaust
exposes you to chemicals known to the State
of California to cause cancer and birth defects,
or other reproductive harm.
• Always start and operate the engine in a
well-ventilated area.
• If in an exposed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system.
• Do not idle the engine except as necessary.
For more information go to
www.P65 warnings.ca.gov/diesel
WARNING: This product, when used for welding or
cutting, produces fumes or gases which contain
chemicals known to the State of California to cause
birth defects and, in some cases, cancer. (California
Health & Safety Code § 25249.5 et seq.)
WARNING: Cancer and Reproductive Harm
www.P65warnings.ca.gov
ARC WELDING CAN BE HAZARDOUS. PROTECT
YOURSELF AND OTHERS FROM POSSIBLE SERIOUS
INJURY OR DEATH. KEEP CHILDREN AWAY.
PACEMAKER WEARERS SHOULD CONSULT WITH
THEIR DOCTOR BEFORE OPERATING.
Read and understand the following safety highlights. For
additional safety information, it is strongly recommended
that you purchase a copy of “Safety in Welding & Cutting -
ANSI Standard Z49.1” from the American Welding Society,
P.O. Box 351040, Miami, Florida 33135 or CSA Standard
W117.2-1974. A Free copy of “Arc Welding Safety” booklet
E205 is available from the Lincoln Electric Company,
22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.
BE SURE THAT ALL INSTALLATION, OPERATION,
MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.
FOR ENGINE POWERED
EQUIPMENT.
1.a. Turn the engine off before troubleshooting
and maintenance work unless the
maintenance work requires it to be running.
1.b. Operate engines in open, well-ventilated areas or vent the engine
exhaust fumes outdoors.
1.c. Do not add the fuel near an open flame welding
arc or when the engine is running. Stop the
engine and allow it to cool before refueling to
prevent spilled fuel from vaporizing on contact
with hot engine parts and igniting. Do not spill fuel when filling
tank. If fuel is spilled, wipe it up and do not start engine until
fumes have been eliminated.
1.d. Keep all equipment safety guards, covers
and devices in position and in good repair.
Keep hands, hair, clothing and tools away
from V-belts, gears, fans and all other
moving parts when starting, operating or
repairing equipment.
1.e. In some cases it may be necessary to remove safety guards to
perform required maintenance. Remove guards only when
necessary and replace them when the maintenance requiring
their removal is complete. Always use the greatest care when
working near moving parts.
1.f. Do not put your hands near the engine fan. Do not attempt to
override the governor or idler by pushing on the throttle control
rods while the engine is running.
1.g. To prevent accidentally starting gasoline engines while turning
the engine or welding generator during maintenance work,
disconnect the spark plug wires, distributor cap or magneto wire
as appropriate.
1.h. To avoid scalding, do not remove the radiator
pressure cap when the engine is hot.
ELECTRIC AND
MAGNETIC FIELDS MAY
BE DANGEROUS
2.a. Electric current flowing through any conductor
causes localized Electric and Magnetic Fields (EMF).
Welding current creates EMF fields around welding cables
and welding machines
2.b. EMF fields may interfere with some pacemakers, and
welders having a pacemaker should consult their physician
before welding.
2.c. Exposure to EMF fields in welding may have other health effects
which are now not known.
2.d. All welders should use the following procedures in order to
minimize exposure to EMF fields from the welding circuit:
2.d.1. Route the electrode and work cables together - Secure
them with tape when possible.
2.d.2. Never coil the electrode lead around your body.
2.d.3. Do not place your body between the electrode and work
cables. If the electrode cable is on your right side, the
work cable should also be on your right side.
2.d.4. Connect the work cable to the workpiece as close as pos-
sible to the area being welded.
2.d.5. Do not work next to welding power source.
SAFETY
Safety 02 of 04 - 5/16/2018

ELECTRIC SHOCK
CAN KILL.
3.a. The electrode and work (or ground) circuits are
electrically “hot” when the welder is on. Do
not touch these “hot” parts with your bare skin or wet clothing.
Wear dry, hole-free gloves to insulate hands.
3.b. Insulate yourself from work and ground using dry insulation.
Make certain the insulation is large enough to cover your full area
of physical contact with work and ground.
In addition to the normal safety precautions, if
welding must be performed under electrically
hazardous conditions (in damp locations or while
wearing wet clothing; on metal structures such as
floors, gratings or scaffolds; when in cramped
positions such as sitting, kneeling or lying, if there
is a high risk of unavoidable or accidental contact
with the workpiece or ground) use the following
equipment:
• Semiautomatic DC Constant Voltage (Wire) Welder.
• DC Manual (Stick) Welder.
• AC Welder with Reduced Voltage Control.
3.c. In semiautomatic or automatic wire welding, the electrode,
electrode reel, welding head, nozzle or semiautomatic welding
gun are also electrically “hot”.
3.d. Always be sure the work cable makes a good electrical
connection with the metal being welded. The connection should
be as close as possible to the area being welded.
3.e. Ground the work or metal to be welded to a good electrical (earth)
ground.
3.f. Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition. Replace
damaged insulation.
3.g. Never dip the electrode in water for cooling.
3.h. Never simultaneously touch electrically “hot” parts of electrode
holders connected to two welders because voltage
between the
two can be the total of the open circuit voltage of both
welders.
3.i. When working above floor level, use a safety belt to protect
yourself from a fall should you get a shock.
3.j. Also see Items 6.c. and 8.
ARC RAYS CAN BURN.
4.a. Use a shield with the proper filter and cover plates to protect your
eyes from sparks and the rays of the arc when welding or
observing open arc welding. Headshield and filter lens should
conform to ANSI Z87. I standards.
4.b. Use suitable clothing made from durable flame-resistant material
to protect your skin and that of your helpers from the arc rays.
4.c. Protect other nearby personnel with suitable, non-flammable
screening and/or warn them not to watch the arc nor expose
themselves to the arc rays or to hot spatter or metal.
FUMES AND GASES
CAN BE DANGEROUS.
5.a. Welding may produce fumes and gases
hazardous to health. Avoid breathing these
fumes and gases. When welding, keep your head out of the fume.
Use enough ventilation and/or exhaust at the arc to keep fumes
and gases away from the breathing zone. When welding
hardfacing (see instructions on container or SDS)
or on lead or cadmium plated steel and other
metals or coatings which produce highly toxic
fumes, keep exposure as low as possible and
within applicable OSHA PEL and ACGIH TLV limits
using local exhaust or mechanical ventilation
unless exposure assessments indicate otherwise.
In confined spaces or in some circumstances,
outdoors, a respirator may also be required.
Additional precautions are also required when
welding
on galvanized steel.
5. b. The operation of welding fume control equipment is affected by
various factors including proper use and positioning of the
equipment, maintenance of the equipment and the specific
welding procedure and application involved. Worker exposure
level should be checked upon installation and periodically
thereafter to be certain it is within applicable OSHA PEL and
ACGIH TLV limits.
5.c. Do not weld in locations near chlorinated hydrocarbon vapors
coming from degreasing, cleaning or spraying operations. The
heat and rays of the arc can react with solvent vapors to form
phosgene, a highly toxic gas, and other irritating products.
5.d. Shielding gases used for arc welding can displace air and
cause
injury or death. Always use enough ventilation, especially in
confined areas, to insure breathing air is safe.
5.e. Read and understand the manufacturer’s instructions for this
equipment and the consumables to be used, including the
Safety Data Sheet (SDS) and follow your employer’s safety
practices. SDS forms are available from your welding
distributor or from the manufacturer.
5.f. Also see item 1.b.
SAFETY
Safety 03 of 04 - 5/16/2018

WELDING AND CUTTING
SPARKS CAN CAUSE
FIRE OR EXPLOSION.
6.a. Remove fire hazards from the welding area. If
this is not possible, cover them to prevent the welding sparks
from starting a fire. Remember that welding sparks and hot
materials from welding can easily go through small cracks and
openings to adjacent areas. Avoid welding near hydraulic lines.
Have a fire extinguisher readily available.
6.b. Where compressed gases are to be used at the job site, special
precautions should be used to prevent hazardous situations.
Refer to “Safety in Welding and Cutting” (ANSI Standard Z49.1)
and the operating information for the equipment being used.
6.c. When not welding, make certain no part of the electrode circuit is
touching the work or ground. Accidental contact can cause
overheating and create a fire hazard.
6.d. Do not heat, cut or weld tanks, drums or containers until the
proper steps have been taken to insure that such procedures
will not cause flammable or toxic vapors from substances inside.
They can cause an explosion even though they have been
“cleaned”. For information, purchase “Recommended Safe
Practices for the Preparation for Welding and Cutting of
Containers and Piping That Have Held Hazardous Substances”,
AWS F4.1 from the American Welding Society
(see address above).
6.e. Vent hollow castings or containers before heating, cutting or
welding. They may explode.
6.f. Sparks and spatter are thrown from the welding arc. Wear oil free
protective garments such as leather gloves, heavy shirt, cuffless
trousers, high shoes and a cap over your hair. Wear ear plugs
when welding out of position or in confined places. Always wear
safety glasses with side shields when in a welding area.
6.g. Connect the work cable to the work as close to the welding area
as practical. Work cables connected to the building framework or
other locations away from the welding area increase the
possibility of the welding current passing through lifting chains,
crane cables or other alternate circuits. This can create fire
hazards or overheat lifting chains or cables until they fail.
6.h. Also see item 1.c.
6.I. Read and follow NFPA 51B “Standard for Fire Prevention During
Welding, Cutting and Other Hot Work”, available from NFPA, 1
Batterymarch Park, PO box 9101, Quincy, MA 022690-9101.
6.j. Do not use a welding power source for pipe thawing.
CYLINDER MAY EXPLODE IF
DAMAGED.
7.a. Use only compressed gas cylinders containing
the correct shielding gas for the process used
and properly operating regulators designed for
the gas and pressure used. All hoses, fittings,
etc. should be suitable for the application and
maintained in good condition.
7.b. Always keep cylinders in an upright position securely chained to
an undercarriage or fixed support.
7.c. Cylinders should be located:
• Away from areas where they may be struck or subjected
to physical damage.
• A safe distance from arc welding or cutting operations
and any other source of heat, sparks, or flame.
7.d. Never allow the electrode, electrode holder or any other
electrically “hot” parts to touch a cylinder.
7.e. Keep your head and face away from the cylinder valve outlet
when opening the cylinder valve.
7.f. Valve protection caps should always be in place and hand tight
except when the cylinder is in use or connected for use.
7.g. Read and follow the instructions on compressed gas cylinders,
associated equipment, and CGA publication P-l, “Precautions for
Safe Handling of Compressed Gases in Cylinders,” available from
the Compressed Gas Association, 14501 George Carter Way
Chantilly, VA 20151.
FOR ELECTRICALLY
POWERED EQUIPMENT.
8.a. Turn off input power using the disconnect
switch at the fuse box before working on
the equipment.
8.b. Install equipment in accordance with the U.S. National Electrical
Code, all local codes and the manufacturer’s recommendations.
8.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturer’s recommendations.
Refer to
http://www.lincolnelectric.com/safety
for additional safety information.
SAFETY
Safety 04 of 04 - 5/16/2018

PRÉCAUTIONS DE SÛRETÉ
Pour votre propre protection lire et observer toutes les instructions
et les précautions de sûreté specifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûreté générales suiv-
antes:
Sûreté Pour Soudage A LʼArc
1. Protegez-vous contre la secousse électrique:
a. Les circuits à lʼélectrode et à la piéce sont sous tension
quand la machine à souder est en marche. Eviter toujours
tout contact entre les parties sous tension et la peau nue
ou les vétements mouillés. Porter des gants secs et sans
trous pour isoler les mains.
b. Faire trés attention de bien sʼisoler de la masse quand on
soude dans des endroits humides, ou sur un plancher met-
allique ou des grilles metalliques, principalement dans
les positions assis ou couché pour lesquelles une grande
partie du corps peut être en contact avec la masse.
c. Maintenir le porte-électrode, la pince de masse, le câble de
soudage et la machine à souder en bon et sûr état defonc-
tionnement.
d.Ne jamais plonger le porte-électrode dans lʼeau pour le
refroidir.
e. Ne jamais toucher simultanément les parties sous tension
des porte-électrodes connectés à deux machines à souder
parce que la tension entre les deux pinces peut être le total
de la tension à vide des deux machines.
f. Si on utilise la machine à souder comme une source de
courant pour soudage semi-automatique, ces precautions
pour le porte-électrode sʼapplicuent aussi au pistolet de
soudage.
2. Dans le cas de travail au dessus du niveau du sol, se protéger
contre les chutes dans le cas ou on recoit un choc. Ne jamais
enrouler le câble-électrode autour de nʼimporte quelle partie du
corps.
3. Un coup dʼarc peut être plus sévère quʼun coup de soliel, donc:
a. Utiliser un bon masque avec un verre filtrant approprié ainsi
quʼun verre blanc afin de se protéger les yeux du rayon-
nement de lʼarc et des projections quand on soude ou
quand on regarde lʼarc.
b. Porter des vêtements convenables afin de protéger la peau
de soudeur et des aides contre le rayonnement de lʻarc.
c. Protéger lʼautre personnel travaillant à proximité au
soudage à lʼaide dʼécrans appropriés et non-inflammables.
4. Des gouttes de laitier en fusion sont émises de lʼarc de
soudage. Se protéger avec des vêtements de protection libres
de lʼhuile, tels que les gants en cuir, chemise épaisse, pan-
talons sans revers, et chaussures montantes.
5. Toujours porter des lunettes de sécurité dans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les
zones où lʼon pique le laitier.
6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque dʼincendie dû aux étincelles.
7. Quand on ne soude pas, poser la pince à une endroit isolé de
la masse. Un court-circuit accidental peut provoquer un
échauffement et un risque dʼincendie.
8. Sʼassurer que la masse est connectée le plus prés possible de
la zone de travail quʼil est pratique de le faire. Si on place la
masse sur la charpente de la construction ou dʼautres endroits
éloignés de la zone de travail, on augmente le risque de voir
passer le courant de soudage par les chaines de levage,
câbles de grue, ou autres circuits. Cela peut provoquer des
risques dʼincendie ou dʼechauffement des chaines et des
câbles jusquʼà ce quʼils se rompent.
9. Assurer une ventilation suffisante dans la zone de soudage.
Ceci est particuliérement important pour le soudage de tôles
galvanisées plombées, ou cadmiées ou tout autre métal qui
produit des fumeés toxiques.
10. Ne pas souder en présence de vapeurs de chlore provenant
dʼopérations de dégraissage, nettoyage ou pistolage. La
chaleur ou les rayons de lʼarc peuvent réagir avec les vapeurs
du solvant pour produire du phosgéne (gas fortement toxique)
ou autres produits irritants.
11. Pour obtenir de plus amples renseignements sur la sûreté, voir
le code “Code for safety in welding and cutting” CSA Standard
W 117.2-1974.
PRÉCAUTIONS DE SÛRETÉ POUR
LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR
1. Relier à la terre le chassis du poste conformement au code de
lʼélectricité et aux recommendations du fabricant. Le dispositif
de montage ou la piece à souder doit être branché à une
bonne mise à la terre.
2. Autant que possible, Iʼinstallation et lʼentretien du poste seront
effectués par un électricien qualifié.
3. Avant de faires des travaux à lʼinterieur de poste, la debranch-
er à lʼinterrupteur à la boite de fusibles.
4. Garder tous les couvercles et dispositifs de sûreté à leur place.
Mar. ʻ93
iv
SAFETY
iv

TABLE OF CONTENTS
SAFETY PRECAUTIONS.......................................................................................................................i-v
TABLE OF CONTENTS...........................................................................................................................vi
GENERAL INFORMATION ......................................................................................................................1
PRODUCT DESCRIPTION ................................................................................................................1
SPECIFICATIONS ..............................................................................................................................1
RECOMMENDED PROCESSES AND EQUIPMENT ........................................................................1
INSTALLATION .....................................................................................................................................2,3
UNPACKING THE PUSH-PULL GUN ................................................................................................2
PUSH-PULL GUN FAMILARIZATION DIAGRAM ..............................................................................3
OPERATING INSTRUCTIONS .............................................................................................................4-7
HANDLE GRIP POSITION .................................................................................................................4
SAFETY PRECAUTIONS...................................................................................................................5
SET-UP PROCEDURE.......................................................................................................................5
SELECTING ELECTRODE WIRE......................................................................................................5
LOADING ELECTRODE WIRE..........................................................................................................5
INSTALLING BARREL LINER ............................................................................................................5
DRIVE ROLL GROOVE SELECTION................................................................................................6
MAKING A WELD...............................................................................................................................7
PROCEDURE SETTINGS..................................................................................................................7
SETTING GAS FLOW RATE .............................................................................................................7
ACCESSORIES .......................................................................................................................................8
MAINTENANCE .......................................................................................................................................8
TROUBLESHOOTING GUIDE...........................................................................................................9, 10
REPLACEMENT PARTS LIST DIAGRAM .......................................................................................11, 13
vi
vi

PRODUCT DESCRIPTION
The Panther™ push-pull gun is a lightweight, handheld combined
semiautomatic wire feeder and welding gun, designed primarily for
aluminum welding using argon shielding gas. The cable included
with the push-pull gun allows welding up to 15 (4.57m) 25 (7.62m)
or 50 feet (15.2m) air-cooled and 25 feet (7.62m) water-cooled from
the power source.
The gun is intended for use with Power Wave C300, Power Feed
10M, Power Feed 25M and Power Mig 350MP Power Sources. For
other applications, contact your local Lincoln Electric sales office or
distributor.
The push-pull gun is ideal for aluminum fabrication in industrial
shops, automobile body shops, marinas and for the advanced hob-
byist.
RECOMMENDED PROCESSES AND
EQUIPMENT
The push-pull gun can be used to weld aluminum and aluminum
alloys using Gas Metal Arc Welding or GMAW (also known as MIG)
process, which requires a supply of shielding gas. Argon is normal-
ly used due to its smooth, stable arc, good metal transfer, and low
cost. Positive polarity gives good penetration and affords a base
metal cathode cleaning effect.
PANTHER™ Push Pull Gun - GENERAL INFORMATION
1
Model Panther™ Push-Pull Gun with
Remote Wire Speed Control
Air- and Water-Cooled
Wire Capacity .035"-1/16” (0.8mm-1.6mm)
Aluminum and cored wire
Wire Speed 800 IPM MAX.
Duty Cycle Air-Cooled 300 amps @ 60% Argon Gas
Duty Cycle Water-Cooled 400 amps @ 100% Argon Gas
Shipping Weight 15 ft (4.57m) - 12.6 lbs (5.7kg)
25 ft. (7.6m) - 18 lbs (8.2kg)
50 ft. (15.2m) - 31.5 lbs (14.3kg)
Water-Cooled Model data:
Water-Cooler Cool Arc 40 or equivalent
Coolant Deionized water/ethylene glycol mix
not to exceed 50/50 mix
Water Flow minimum 0.26 gallon @ 36 psi
Water Pressure 35 - 45 psi
Minimum 25 psi - Maximum 60 psi
Supplied with:
KP2744-364A, 3/64” Contact Tip (Installed)
KP2744-035A, .035 Contact Tip
KP2746-1, Gas Diffuser (Installed)
KP2742-1-62R, Gas Nozzle (Installed)
KP2773-2, Insulator (Installed)
KP2876-1, Drive Roll Kit ---(.035-3/64) (Installed)
S26374-64, Tool Kit
Instruction Manual
SPECIFICATIONS

Unpacking the Push-Pull Gun
Safety Precautions
– Read "Safety Precautions" in the Operating Manual before
proceeding. Only personnel that have read and understood
the Operating Manual should install and operate this equipment.
– Power source must be turned "OFF" and power leads disconnected
when installing this unit.
Unpacking the Push-Pull Gun
Carefully unpack your Panther™ Push-Pull Gun and attach the
Barrel Assembly, and make sure you have all of the parts shown
below.
Panther™ Push Pull Gun - INSTALLATION
BARREL
ASSEMBLY
OPERATOR’S
MANUAL
2
Panther™ - PUSH-PULL GUN
KP2744-035A Contact Tip .035 (0.9mm) Included
KP2744-364A Contact Tip . 3/64” (1.2mm) Installed on Barrel Assembly
KP2746-1 Gas Diffuser Installed on Barrel Assembly
KP742-1-62R Gas Nozzle Installed on Barrel Assembly
KP2773-2 Insulator Installed on Barrel Assembly
KP2876-1 Drive Roll Kit .035 / 3/64" (.047") Installed
S26374-64 Tool Kit Included

PANTHER™ Push Pull Gun - INSTALLATION
3
GAS NOZZLE
CONTACT TIP
GAS DIFFUSER
GUN BARREL
HANDLE
CABLE ASSEMBLY
DRIVE ROLL &
RETAINING
THUMB
SCREW
DRIVE ROLL
ACCESS
COVER
DRIVE ROLL
TENSION
ACCESS COVER
WIRE SPEED
CONTROL LINCOLN
POWER PLUG
CIRCULAR 7-PIN
CONNECTOR
TRIGGER
7-PIN
PUSH-PULL
GUN
RECEPTACLE
CONNECTING TO POWER SOURCE:
(Air-Cooled shown)
1. Power source must be “off” and power cord
disconnected.
2. Connect Push-Pull Gun to wire feeder by inserting
power plug to the machine
3. Connect 7-Pin control cable plug to power
source receptacle.
4. Reconnect power and turn on machine.
Push-Pull Gun Familiarization
Become familiar with your push-pull gun before connecting to
welder. For features described below, refer to Figure on the next
page.
1. Handle, gun can be used in either right or left hand.
2. Trigger operates welding power, gas flow, and wire feed.
3. Remote wire speed control, located at rear of handle, controls
the speed of the drive motor.
4. Open drive roll access cover and observe the drive rolls with
two wire grooves. Narrow groove feeds .035 (0.9mm) diameter
wire. Wide groove feeds 3/64 inch (1.2mm) diameter wire. Gun
is shipped with wide groove or 3/64 in operating position
(toward handle). Reverse roller for .035 inch (0.9mm) diameter
wire.
5. Gas nozzle directs gas flow around arc. Unthread gas nozzle to
see contact tip and gas diffuser. Push-pull gun is shipped with
3/64th inch (1.2mm) contact tip installed.
6. Cable assembly for power, control, and gas. Hold gun and
become familiar with gun's weight and balance.

PANTHER™ Push Pull Gun - INSTALLATION & OPERATING INSTRUCTIONS
OPERATING INSTRUCTIONS: Handle Grip Position
The handle is designed such that when held correctly, the trigger is operated with the rear finger. This ensures your hand is above speed
control thus avoiding accidental contact with the speed control while welding.
4

Safety Precautions
WARNING
• Do not touch electrically live
parts or electrode with skin
or wet clothing
• Insulate yourself from work
and ground.
• Always wear dry insulating
gloves.
ELECTRIC SHOCK
can kill.
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing
zone.
FUMES AND GASES can be
dangerous.
• Keep flammable material
away.
• Do not weld on containers
that have held combustibles.
WELDING SPARKS can
cause fire or explosion.
• Wear eye, ear and body
protection..
ARC RAYS can burn.
WARNING: Electric shock can kill. Fumes and gases can be
dangerous to your health. Arc rays can injure eyes and burn
skin. See additional warning information under "Arc Welding
Safely Precautions" on inside of front cover of operating manual.
When inching, (the electrode and drive mechanism are always
electrically energized and remain energized several seconds
after the gun trigger is released.
Setup Procedure
Selecting Electrode Wire
Several alloy types of filler metals are available, and the best
choice depends on the type of base metals and the desired
characteristics of the weldment, such as ductility and strength,
corrosion resistance, sustained service temperature, and anodic
treatment color matching. In addition, several wire sizes are
available, and the choice here will depend upon several fac-
tors, including base metal thickness and the arc transfer process
used. Consult your local dealer or appropriate AWS publication
for help in selecting an appropriate alloy type and wire size. Also
refer to, "Procedure Settings" later in this chapter, for wire sizes
used with typical base metal thicknesses and procedure set-
tings.
Installing Conduit Liner:
1. Laying torch out straight remove positioning nut, then insert your
liner, tapered end first, all the way into torch until it stops. NOTE:
You should see the liner through the holes in the inlet guide this
will help make sure liner is fully installed.
2. While torch is still laying out straight adjust your O-Ring and col-
let so that they will fit up inside of the power-pin when positioning
nut is installed.
3. Reinstall the positioning nut securely, then trim rest of liner
flush with positioning nut, accordingly to fit up to drive rolls.
Installing Barrel Liner
1. Unscrew barrel inlet guide
2. Unscrew barrel liner from inlet guide
3. Reverse procedure with new liner. Be sure to install liner with
tapered end toward contact tip, and liner is fully threaded into
inlet guide.
NOTE: When feeding new wire through conduit liner, dull any sharp
edges from end of wire.
PANTHER™ Push Pull Gun - OPERATING INSTRUCTIONS
5
Positioning Nut Collet
O-Ring
Inlet Guide with Liner
Inspection Hole
Liner
Positioning
Nut
Torch
Barrel
Neck
Liner
Barrel
Inlet
Guide
NOTE: Rubber barrel cover is intended for welder comfort. Torch
barrel is electrically insulated without this cover.

PANTHER™ Push Pull Gun - OPERATING INSTRUCTIONS
6
Drive Roll Groove Selection
The drive rolls have two grooves. A wider groove for feeding
3/64” (1.2mm) wire and a narrow groove for feeding .035”
(0.9mm) wire to accommodate changes in the wire size used.
Changing between the grooves simply requires reversing the
drive roll.
A. Drive Roll Orientation
1. Drive rolls are scribed with wire groove size. For appropri-
ate groove orientation, ensure desired size callout is facing
up and visible.
B. Changing Drive Rolls
1. Flip lid open
2. Unscrew thumb screw and remove drive roll. Pressure may
have to be applied to drive roll tension access cover.
D. Cable Assembly Removal
1. Split leather cable cover at velcro opening approximately
24" (60.96cm) from strain relief.
2. Turn strain relief locking ring counter-clock-wise and slide
down cable assembly approximately 24" (60.96cm).
3. Loosen rear handle screw and pull back ball joint strain
relief to access connections.
4. Disconnect black 8-position electrical connector between
handle and cable assembly - cut off safety connection wire,
then disconnect connector (safety wire can be .035 or 3/64"
aluminum wire).
5. Loosen (2) cable assembly front block retaining screws.
6. Pull cable assembly from rear of gun, assuring not to snag
the 8-pin electrical connector.
DRIVE ROLL
RETAINING
THUMB SCREW
DRIVE ROLL
DRIVE ROLL
TENSION
ACCESS COVER
DRIVE ROLL
TENSION
ACCESS COVER
DRIVE ROLL
TENSION
ADJUSTING
SCREW
STRAIN RELIEF
LOCKING RING
RETAINING
SCREWS (2x)
HANDLE
SCREW
CABLE
ASSEMBLY
FRONT BLOCK
.035"
3/64"
C. Drive Roll Tension Adjustment
NOTE: Drive roll tension is factory set and does not typi-
cally require adjustment. Over-tightening tension can result
in distortion of welding wire.
1. Unscrew drive roll tension access cover.
2. Using M4 allen wrench supplied in tool kit, rotate drive roll
tension adjustment screw clockwise to increase tension,
counter-clock-wise to descrease tension.
NOTE: Make sure to lubricate o-rings before installing cable.

7
PANTHER™Push Pull Gun - OPERATING INSTRUCTIONS
Making A Weld
1. Check that the push-pull gun power, control, and gas connec-
tions are correct for the power source being used. Check that
the gas supply is turned on. Check wire push-pull for an ade-
quate supply of wire.
2. See "Procedure Settings", below for wire feed speed and
voltage settings. Set these controls depending on the weld-
ing wire and base metal thickness being used.
3. Connect work clamp to metal being welded. Work clamp must
make good electrical contact to the workpiece. The workpiece
must also be grounded as stated in "Arc Welding Safety
Precautions".
4. Connect power to welder and turn "ON".
5. Prepare to purge gas line by first releasing wire drive. Push
wire drive release lever to the UP position, to avoid feeding
wire.
WARNING: Gun body and contact tip become
electrically energized when gun trigger is pressed and
remain so for several seconds after
trigger is released.
6. Press and hold gun trigger for about 5 seconds to purge gas
line. If adjustable regulator or metering valve is installed, adjust
gas flow per, "Setting Gas Flow Rate".
7. Re-engage wire drive by pushing release lever to down posi-
tion to feed wire.
8. Momentarily squeeze trigger and verify that wire feeds proper-
ly. Trim wire to approximately 1/4" (6 mm) from end of contact
tip.
WARNING: When using an open arc process, it is
necesary to use correct eye, ear, head,
and body protection.
9. Position gun over joint at 10° pushing angle. End of wire may
be lightly touching the work.
10. Lower welding helmet, close gun trigger, and begin welding.
Hold the gun so that the contact tip to work distance is about
1/2 inch (13 mm).
11. To stop welding, release the gun trigger and then pull the gun
away from the work after the arc goes out.
12. When no more welding is to be done, close valve on gas cylin-
der, momentarily operate trigger to release gas pressure in
line and turn off power source.
13. Note that clogged tips can often be salvaged by peeling away
melted wire.
Procedure Settings
The following procedure settings for 4043 aluminum wire and argon
gas can be used as starting points for developing specific welding
procedures:
Wire Metal Wire Amps
Size Thickness Speed DC
in. (mm) ga. in. (mm) Arc Volts ipm (mpm) (+}
.030 (0.8) 22 .030 (0.8) 13-14(1) 200 (5.1) 40
20 .036 (1.0) 13-14(1) 240 (6.1) 40
18 .048 (1.2) 14-15(1) 290 (7.4) 50
16 .060 (1.6) 15-16(1) 340 (8.6) 60
14 .075 (2.0) 16-17(1) 370 (9.4) 70
12 .105 (2.5) 16-18(1) 430 (10.9) 90
10 .135 (3.5) 24-26 460 (11.7) 110
3/16 (5.0) 24-26 500 (12.7) 150
1/4 (6.0) 28-29 560 (14.2) 180
3/8 (10.0) 28-30 600 (15.2) 200
.035 (0.9) 22 .030 (0.8) 13-14(1) 150 (3.8) 40
20 .036 (1.0) 13-14(1) 175 (4.4) 40
18 .048 (1.2) 13-14(1) 215 (5.5) 50
16 .060 (1.6) 14-16(1) 250 (6.4) 60
14 .075 (2.0) 14-16(1) 270 (6.9) 70
12 .105 (2.5) 16-18(1) 320 (8.1) 90
10 .135 (3.5) 24-26 410 (10.4) 110
3/16 (5.0) 24-26 450 (11.4) 150
1/4 (6.0) 26-28 530 (13.5) 180
3/8 (10.0) 26-29 560 (14.2) 200
1/2 (12.0) 26-30 600 (15.2) 220
3/64(1.2) 10 .135 (3.5) 20-21(1) 180 (4.6) 110
3/16 (5.0) 20-21(1) 220 (5.6) 150
1/4 (6.0) 27-28 250 (6.4) 180
3/8 (10.0) 25-30 260 (6.6) 200
1/2 (12.0) 25-31 270 (6.9) 220
3/4 (20.0) 25-31 290 (7.4) 250
(1)Short arc transfer.
Setting Gas Flow Rate
Gas handling systems having adjustable flow valves should be
set for the following argon flow rates, depending on base metal
thickness and welding position.
ARGON SHIELDING GAS FLOW RATES
Material Thickness Flow Rates
In Inches and (mm) Welding Position In cf/hr (l/mln)
1/16 (1.6 mm) Flat 30
(11.8)
3/32 to 3/16 Flat, Vertical, 35
(2.4 to 4.8 mm) Horizontal, Overhead (14)
1/4 to 3/8 Flat, Vertical, 35 (14)
(6.3 to 9.5 mm) Flat Vertical, 35 (16.5)
Horizontal, Overhead 40 (18.9)
3/4 (19 mm) Flat, Vertical 35 (16.5)
Horizontal, Overhead 40 (18.9)

PANTHER™ Push Pull Gun ACCESSORIES/MAINTENANCE
8
The following accessories are available for the Panther™ push-pull
gun.
.035-3/64" Aluminum Drive Roll Kit
Features two grooves for feeding aluminum wire. The smaller
groove feeds .035 wire. The larger groove feeds 3/64th wire.
Order KP2876-1
1/16" Aluminum Drive Roll Kit
Features two grooves, each capable of feeding 1/16"
Aluminum wire
Order KP2876-2
Knurled Drive Roll Kit
For feeding steel wires or larger 5356 Aluminum wires
Order KP2911-1
Barrel Liner (45°, 60° Barrels)
Liner for feeding up to1/16” wire.
Order KP2879-1
Barrel Liner (180° Straight Barrel)
Liner for feeding up to1/16” wire.
Order KP2879-2
Gun Barrel
60 degree air-cooled gun barrel Order KP2877-60
45 degree air-cooled gun barrel Order KP2877-45
180 degree air-cooled gun barrel Order KP2877-180
60 degree water-cooled gun barrel Order KP2878-60
Cable Assemblies
15 foot Air-Cooled Cable Assembly - Panther Order KP2883-1
25 foot Air-Cooled Cable Assembly - Panther Order KP2883-2
50 foot Air-Cooled Cable Assembly - Panther Order KP2883-3
25 foot Water-Cooled Cable Assembly - Panther Order KP2884-2
Wire Conduits for Aluminum Wire
15 foot .035"-1/16" Wire Diameter Order KP2881-15
25 foot .035"-1/16" Wire Diameter Order KP2881-25
50 foot .035"-1/16" Wire Diameter Order KP2881-50
Wire Conduits for Steel Wire
15 foot .035"-1/16" Wire Diameter Order KP2912-15
25 foot .035"-1/16" Wire Diameter Order KP2912-25
50 foot .035"-1/16" Wire Diameter Order KP2912-50
Gas Diffuser
Diffuser designed to accept thread on gas nozzles
Order KP2746-1
Gun Tube Insulator
For insulation of gas nozzle Order KP2773-2
Gas Nozzle
.50 Thread on Nozzle (Tip Recessed) Order KP2742-1-50R
.62 Thread on Nozzle (Tip Recessed) Order KP2742-1-62R
Contact Tips
.035 Order KP2744-035A
3/64" Order KP2744-364A
3/64" (5356)1. Order KP2744-364A5356
1/16” Order KP2744-116A
Air-Cooled to Water Cooled Retrofit 25'
Cable Assembly 25' Water Cooled Order KP2884-2
Gun Barrel Order KP2878-60
ACCESSORIES (consult Lincoln Sales Bulletin E12.16)
1. For use on lower amperage applications with 5356 wire. Features a smaller
tip inner diameter to reduce arc flaring.
MAINTENANCE
Safety Precautions
WARNING
• Do not operate with covers
removed.
• Disconnect input power from
welder before installing gun.
• Do not touch electrically hot
part.
• Only qualified persons should
install, use or service this
machine.
ELECTRIC SHOCK
can kill.
When finished welding, be sure to turn power source off and close
valve on gas cylinder.
• Working with flying or falling objects can cause serious eye
injuries.
• Protective eyeware such as safety specticals with side
shields or goggles must be worn at all times.
FLYING FRAGMENTS
can cause eye injury.
Routine Maintenance
Periodically blow out or vacum any metal wire shavings from Drive
Roll area.
Inspect and replace any worn wire on inlet guide or barrel liner.
NOTE: Oil and spray cleaners can contaminate electrode wire and
cause bad welds. They could also make wire drive rollers slip. Be
careful when using any of these liquids on push-pull gun.
Carefully clean gun with a cleaner that is safe for plastic. Apply
cleaner to rag and wipe gun. Do NOT spray cleaner on gun. Keep
cable dean. Oil, grease gasoline, paint, and solvents degrade cable
insulation.
Routine maintenance for consumable spare parts will depend on Duty Cycle and
particular application.
WARNING
WARNING
ELECTRIC SHOCK
can kill.
FLYING FRAGMENTS
can cause eye injury.

PANTHER™ Push Pull Gun
Troubleshooting Guide
PROBLEM SYMPTOMS REMEDY
No arc, wire feed, or gas flow. 1. Cable connections loose. 1. Check all power connections
2. Trigger switch loose or defective. 2. Fix switch or replace.
3. Welder not turned on. 3. Turn on welder power.
4. Welder not plugged in. 4. Plug in.
5. Cable or adapter cable damaged. 5. Inspect and replace
No arc, weak arc. 1. Poor ground connection to work. 1. Check ground connection.
2. Power cable connection loose. 2. Check connections; if defective,
replace cable or connectors.
3. Voltage set too low. 3. Adjust to proper voltage
4. Tip too large for wire size. 4. Change tip size.
5. Wire feed speed too slow. 5. Increase wire feed speed.
No wire feed. 1. Feeding small diameter wire with large 1. Change position of wire drive roller.
groove on drive roller.
2. Wire drive release tension too light. 2. Close wire drive release.
3. Wire welded to tip. 3. Peel wire off tip or use new tip.
4. Wire push-pull empty in machine. 4. Insert new push-pull.
5. Tip too small for wire. 5. Insert correct tip.
6. Kink or bend in wire. 6. Pull wire through tip or start new
wire end.
7. Control cable loose. 7. Check all connections.
8. Drive roller worn. 8. Replace.
9. Pressure roller stuck. 9. Replace or lubricate.
10. Roller spring loose or broken. 10. Replace.
Wire feed too fast or too slow. 1. Wrong wire speed set for work. 1. Adjust wire feed speed.
Wire feed is erratic 1. Clogged or worn cable wire conduit. 1. Replace.
2. Clogged or worn barrel liner. 2. Replace.
3. Incorrect drive roll groove. 3. Check groove size.
4. Incorrect contact tip. 4. Check / replace.
5. Drive roll tension. 5. Check / tighten or loosen as
necessary.
Low or no gas flow. Oxidation of work. 1. Gas flow not set right. 1. Set proper flow rate.
2. Cylinder out of gas. 2. Get new cylinder of gas.
3. Cylinder valve closed. 3. Open cylinder valve.
4. Leak in gas line. 4. Inspect and replace.
5. Leak in gun. 5. Check for missing gun tubes and/or
missing gun body cover.
6. Gas diffuser clogged. 6. Blow out gas diffuser openings.
Oxidized work, arc unstable. 1. Wrong welding polarity. 1. Check polarity.
Random weld porosity. 1. Porosity in welds. 1. Check barrel o-rings.
2. Check cable front block o-rings.
3. Check feeder power pin o-rings.
Water leaking. 1. Check barrel o-rings.
2. Check cable front block o-rings.
3. Check feeder power pin o-rings.
9

PANTHER™ Push Pull Gun
Troubleshooting Guide
TESTING THE TORCH
Motor Check. Remove the torch connector from the cabinet.
Using the torch Control Cable Connector, check the resistance across pins “A”
and “B” (motor leads). The resistance across the motor should be between 5-10
ohms. If an open circuit or short exist, check the motor leads and motor
independently.
Testing the Potentiometer. Using the torch Control Cable Connector, check the resistance across pin “D”
(wiper) and pin “C”. The resistance should vary from 5K - 0 ohms.
Check the resistance across pin “D” (wiper) and pin “G”. The resistance should
vary from 5K - 0 ohms.
Testing the Trigger Switch. Using the torch Control Cable Connector, check for continuity across pins “E”
and “F” when the trigger is pressed.
10

18
16
17
19
19
16
19
19
19
PANTHER™ Push Pull Gun
AIR-COOLED GUN BARREL AND EXTERNAL
REPLACEMENT PARTS LIST AND DIAGRAM
ITEM PART
NO. NO. DESCRIPTION
N/S S26374-48 Cable Cover 25'
N/S S26374-49 Cable Cover 50'
N/S S26374-50 Power Cable Assembly 15'
N/S S26374-51 Power Cable Assembly 25'
N/S S26374-52 Power Cable Assembly 50'
N/S S26374-53 Wire Conduit Assembly - 15'
N/S S26374-54 Wire Conduit Assembly - 25'
N/S S26374-55 Wire Conduit Assembly - 50'
N/S S26374-56 Control Wire Assembly - 15'
N/S S26374-57 Control Wire Assembly - 25'
N/S S26374-58 Control Wire Assembly - 50'
N/S S26374-59 Gas Hose Assembly - 15'
N/S S26374-60 Gas Hose Assembly - 25'
N/S S26374-61 Gas Hose Assembly - 50'
27 S26374-62 Front Cable Block Assembly
28 S26374-32 Rear End Feeder Connection Kit
N/S S26374-64 Tool Kit
11
21
22
24
26
23
25
N/S = Not Shown
20
27
28
ITEM PART
NO. NO. DESCRIPTION
16 S26374-81 Handle Assembly
17 S26374-65 Retaining Ring, Strain Relief Swivel
18 S26374-67 Access Cover, Drive Roll
19 S26374-78 Screw Kit, Handle Assembly
20 K2883-1 Cable Assembly Air-Cooled 15' (4.57m)
20 K2883-2 Cable Assembly Air-Cooled 25' (7.62m)
20 K2883-3 Cable Assembly Air-Cooled 50' (15.24m)
21 KP2877-60 60 Degree Air-Cooled Torch Barrel
21 KP2877-45 45 Degree Air-Cooled Torch Barrel
21 KP2877-180 180 Degree Air-Cooled Torch Barrel
22 S26374-45 Barrel Nut
23 KP2879-1 45 & 60 Degree Barrel Liner (035-1/16")
23 KP2879-2 180 Degree Barrel Liner (035-1/16")
24 S26374-46 Barrel Inlet Guide
25 S26374-44 O-Ring Kit A/C Barrel
26 S26374-104 Barrel Insulation Hose
N/S S26374-47 Cable Cover 15'

18
16
17
19
19
16
19
19
19
PANTHER™ Push Pull Gun
WATER-COOLED GUN BARREL AND EXTERNAL
REPLACEMENT PARTS LIST AND DIAGRAM
ITEM PART
NO. NO. DESCRIPTION
26 S26374-104 Barrel Insulation Hose
N/S S26374-90 Water Hose Kit
N/S S26374-48 Cable Cover 25'
N/S S26374-99 Power Cable Assembly 25'
N/S S26374-101 Wire Conduit Assembly - 25'
N/S S26374-57 Control Wire Assembly - 25'
N/S S26374-88 Gas Hose Assembly - 25'
27 S26374-62 Front Cable Block Assembly
28 S26374-89 Rear End Feeder Connection Kit
N/S S26374-64 Tool Kit
12
21
22
24
26
23
25
N/S = Not Shown
20
27
28
ITEM PART
NO. NO. DESCRIPTION
16 S26374-81 Handle Assembly
17 S26374-65 Retaining Ring, Strain Relief Swivel
18 S26374-67 Access Cover, Drive Roll
19 S26374-78 Screw Kit, Handle Assembly
20 K2884-2 Cable Assembly Water-Cooled 25' (7.62m)
21 KP2878-60 60 Degree Water-Cooled Torch Barrel
22 S26374-45 Barrel Nut
23 KP2879-1 45 & 60 Degree Barrel Liner (035-1/16")
24 S26374-98 Barrel Inlet Guide
25 S26374-102 O-Ring Kit W/C Barrel

PANTHER™ Push Pull Gun
INTERNAL
REPLACEMENT PARTS LIST AND DIAGRAM
13
2
12
13
14
7
3
9
8 (2x)
4 (2x)
ITEM NO. PART NO. DESCRIPTION COMMENTS
1 S26374-75 Torch Body Assembly
2 S26374-43 Wiring Harness
3 S26374-73 Gearbox Assembly
4 S26374-66 Screw Kit, Inlet Guide Retaining 2
5 S26374-80 Adjustment Screw, Drive Roll Tension
6 S26374-68 Cover, Drive Roll Tension
7 S26374-71 Inlet Guide, Liner Conduit
8 S26374-63 Thumb Screw
9 S26374-77 Screw Kit, Motor / Gearbox
10 KP2876-1 Drive Roll Kit AL .035-3/64" Kit of 2
10 KP2876-2 Drive Roll Kit AL 1/16" Kit of 2
10 KP2911-1 Drive Roll Kit Knurled Kit of 2
11 S26374-74 Motor Assembly, 29V Analog
12 S26374-72 Liner Conduit Tube
13 S26374-82 Trigger Switch Assembly
14 S26374-76 Potentiometer Assembly, 5K, 3 Turn
15 S26374-79 Trigger Assembly
1
515
6
11
10