Miller M-40 GUN Owner's manual
- Category
- Welding System
- Type
- Owner's manual
This manual is also suitable for
MIGmatic M-Series
(H-10/M-10, M-15, M-25,
M-25M, And M-40 Guns)
Processes
Description
MIG (GMAW) Welding
OM-1035 169 965E
February 2004
Semi-Automatic, Air-Cooled
MIG (GMAW) Welding Gun
Visit our website at
www.MillerWelds.com
Flux Cored (FCAW) Welding
Miller Electric manufactures a full line
of welders and welding related equipment.
For information on other quality Miller
products, contact your local Miller distributor to receive the latest full
line catalog or individual catalog sheets. To locate your nearest
distributor or service agency call 1-800-4-A-Miller, or visit us at
www.MillerWelds.com on the web.
Thank you and congratulations on choosing Miller. Now you can get
the job done and get it done right. We know you don’t have time to do
it any other way.
That’s why when Niels Miller first started building arc welders in 1929,
he made sure his products offered long-lasting value and superior
quality. Like you, his customers couldn’t afford anything less. Miller
products had to be more than the best they could be. They had to be the
best you could buy.
Today, the people that build and sell Miller products continue the
tradition. They’re just as committed to providing equipment and service
that meets the high standards of quality and value established in 1929.
This Owner’s Manual is designed to help you get the most out of your
Miller products. Please take time to read the Safety precautions. They
will help you protect yourself against potential hazards on the worksite.
We’ve made installation and operation quick
and easy. With Miller you can count on years
of reliable service with proper maintenance.
And if for some reason the unit needs repair,
there’s a Troubleshooting section that will
help you figure out what the problem is. The
parts list will then help you to decide the
exact part you may need to fix the problem.
Warranty and service information for your
particular model are also provided.
Miller is the first welding
equipment manufacturer in
the U.S.A. to be registered to
the ISO 9001:2000 Quality
System Standard.
Working as hard as you do
− every power source from
Miller is backed by the most
hassle-free warranty in the
business.
From Miller to You
Mil_Thank 7/03
TABLE OF CONTENTS
SECTION 1 −SAFETY PRECAUTIONS FOR GMAW WELDING GUNS − READ BEFORE USING 1 . . . . . . . .
1-1. Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2. GMAW Gun Hazards 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3. California Proposition 65 Warnings 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EMF INFORMATION 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2 − SAFETY INFORMATION 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3 − INSTALLATION 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1. Specifications 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2. Duty Cycle And Overheating 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3. Installing Gun 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 4 − OPERATION 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1. Operating The Gun 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2. Dual Schedule Mode For M-25M Gun 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5 − MAINTENANCE & TROUBLESHOOTING 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1. Removing Nozzle, Contact Tip, And Adapter, Changing Liner, And Cleaning Gun Casing 6 . . . . . . . . .
5-2. Replacing Switch And/Or Head Tube In H-10, M-10, M-15, M-25, And M-25M Gun Models 7 . . . . . . . .
5-3. Replacing Head Tube And/Or Switch In M-40 Gun Model 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4. Routine Maintenance 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5. Troubleshooting 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6 − PARTS LIST 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARRANTY
Return To Table Of Contents
OM-1035 Page 1
SECTION 1 −SAFETY PRECAUTIONS FOR GMAW
WELDING GUNS − READ BEFORE USING
SR7_8/03
1-1. Symbol Usage
Means Warning! Watch Out! There are possible hazards with this
procedure! The possible hazards are shown in the adjoining symbols.
This group of symbols means Warning! Watch Out! Possible ELECTRIC SHOCK and HOT PARTS hazards.
Consult symbols and related instructions below for necessary actions to avoid the hazards.
Y Marks a special safety message.
. Means NOTE; not safety related.
1-2. GMAW Gun Hazards
WARNING
PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN
AWAY. PACEMAKER WEARERS KEEP AWAY UNTIL CONSULTING YOUR DOCTOR.
In welding, as in most jobs, exposure to certain hazards occurs. Welding is safe when precautions are taken. The
safety information given below is only a summary of the more complete safety information found in the wire feeder
and welding power source Owner’s Manuals. Read and follow all safety precautions.
HAVE ALL INSTALLATION, OPERATION, MAINTENANCE, AND REPAIR WORK PERFORMED ONLY BY
QUALIFIED PEOPLE.
GMAW WELDING can be hazardous.
ARC RAYS can burn eyes and skin.
1. Wear welding helmet with correct shade of filter.
2. Wear correct eye and body protection.
3. Cover exposed skin with spatter-resistant
clothing.
ELECTRIC SHOCK can kill.
1. Always wear dry insulating gloves.
2. Insulate yourself from work and ground.
3. Do not touch live electrode or electrical parts.
4. Repair or replace worn, damaged, or cracked
gun or cable insulation.
5. Turn off welding power source before changing
contact tip or gun parts.
6. Keep all covers and handle securely in place.
WELDING can cause fire or explosion.
1. Do not weld near flammable material.
2. Do not weld on closed containers.
3. Watch for fire; keep extinguisher nearby.
NOISE can damage hearing; SOME
APPLICATIONS, SUCH AS PULSING
,
are noisy.
1. Check for noise level limits exceeding those
specified by OSHA.
2. Use approved ear plugs or ear muffs if noise leve
l
is high.
3. Warn others nearby about noise hazard.
HOT SURFACES can burn skin.
1. Allow gun to cool before touching.
2. Do not touch hot metal.
3. Protect hot metal from contact by others.
FUMES AND GASES can be hazardous
to your health.
1. Keep your head out of the fumes.
2. Ventilate area, or use breathing device.
3. Read Material Safety Data Sheets (MSDSs) and
manufacturer’s instructions for material used.
WELDING WIRE can cause punctur
e
wounds.
1. Keep hands and body away from gun tip whe
n
trigger is pressed.
BUILD UP OF GAS can injure or
kill
1. Shut off shielding gas supply when not in
use.
2. Always ventilate confined spaces or use
approved air-supplied respirator.
Return To Table Of Contents
OM-1035 Page 2
1-3. California Proposition 65 Warnings
Y Welding or cutting equipment 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 Section 25249.5 et seq.)
Y Battery posts, terminals and related accessories contain lead
and lead compounds, chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.
For Gasoline Engines:
Y Engine exhaust contains chemicals known to the State of
California to cause cancer, birth defects, or other reproductive
harm.
For Diesel Engines:
Y Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.
EMF INFORMATION
The following is a quotation from the General Conclusions Section of
the U.S. Congress, Office of Technology Assessment, Biological
Effects of Power Frequency Electric & Magnetic Fields −
Background Paper, OTA-BP-E-53 (Washington, DC: U.S.
Government Printing Office, May 1989): “. . . there is now a very large
volume of scientific findings based on experiments at the cellular
level and from studies with animals and people which clearly
establish that low frequency magnetic fields can interact with, and
produce changes in, biological systems. While most of this work is
of very high quality, the results are complex. Current scientific
understanding does not yet allow us to interpret the evidence in a
single coherent framework. Even more frustrating, it does not yet
allow us to draw definite conclusions about questions of possible risk
or to offer clear science-based advice on strategies to minimize or
avoid potential risks.”
To reduce magnetic fields in the workplace, use the following
procedures:
1. Keep cables close together by twisting or taping them.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around the body.
4. Keep welding power source and cables as far away as practical.
5. Connect work clamp to workpiece as close to the weld as
possible.
About Pacemakers:
The above procedures are among those also normally
recommended for pacemaker wearers. Consult your doctor for
complete information.
Considerations About Welding And The Effects Of Low Frequency Electric And
Magnetic Fields
NOTE
mod10.1 4/93
OM-1035 Page 3
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SECTION 2 − SAFETY INFORMATION
Read all safety messages throughout this manual.
Obey all safety messages to avoid injury.
Learn the meaning of WARNING and CAUTION.
1 Safety Alert Symbol
2 Signal Word
WARNING means possible death
or serious injury can happen.
CAUTION means possible minor
injury or equipment damage can
happen.
3 Statement Of Hazard And
Result
4 Safety Instructions To Avoid
Hazard
5 Hazard Symbol (If Available)
6 Safety Banner
Read safety blocks for each
symbol shown.
7 NOTE
Special instructions for best
operation − not related to safety.
2
NOTE
ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Disconnect input power before
installing or servicing.
WARNING
READ SAFETY BLOCKS at start of
Section 3-1 before proceeding.
WARNING
5
4
6
7
1 2
CAUTION
MOVING PARTS can injure.
• Keep away from moving parts.
• Keep all panels and covers closed
when operating.
3
Turn Off switch when using high frequency.
SECTION 3 − INSTALLATION
3-1. Specifications
Air-Cooled Welding Guns For GMAW And FCAW Welding
Note: Using gasless flux cored wire reduces gun duty cycle.
H-10/M-10 Feeds .023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires
Duty Cycle Rating:
100%: 100 A With CO
2
Shielding Gas
60%: 100 A With Mixed Gases
Weight With 10 ft (3.0 m) Power Cable: 3.2 lb (1.5 kg)
Identified With No Diamonds On Power Cable
M-15 Feeds .023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires
Duty Cycle Rating:
100%: 150 A With CO
2
Shielding Gas; 120 A With Mixed Gases
100%: 150 A With CO
2
Shielding Gas; 120 A With Mixed Gases
60%: 200 A With CO
2
Shielding Gas; 150 A With Mixed Gases
Weight With 15 ft (4.6 m) Power Cable: 6.0 lb (2.7 kg)
Identified With zz On Power Cable
Ref. 800 797-C
M-25 And M-25M Feed .023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires
Duty Cycle Rating:
100%: 250 A With CO
2
Shielding Gas; 150 A With Mixed Gases
60%: 300 A With CO
2
Shielding Gas; 250 A With Mixed Gases
Weight With 15 ft (4.6 m) Power Cable: 6.0 lb (2.7 kg)
Identified With zzZ On Power Cable
M-40 Feeds .023 To 5/64 in (0.6 To 2.0 mm) Hard Or Flux Cored Wires*
Duty Cycle Rating:
100%: 400 A With CO
2
Shielding Gas; 275 A With Mixed Gases
60%: 525 A With CO
2
Shielding Gas; 400 A With Mixed Gases
Weight With 15 ft (4.6 m) Power Cable: 10.9 lb (4.9 kg)
Identified With zzzz On Power Cable
. M-25M is a replacement gun for the MM250MP welding power source
*With proper consumables, 3/64 in (1.2 mm) aluminium wire can be used in M-40 models.
OM-1035 Page 4
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Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
Y Exceeding duty cycle can
damage unit and void
warranty.
See Section 3-1. Specifications for amperage
rating and duty cycle for each gun model.
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
sduty1 5/95
Continuous Welding
100%dutycycle
3-2. Duty Cycle And Overheating
6 Minutes Welding 4 Minutes Resting
60%dutycycle
3-3. Installing Gun
Ref. 800 921-B
1 Gun Securing Knob
2 Gun End
Loosen knob. Insert gun end until it
bottoms against drive assembly.
Tighten knob.
3 Gun Trigger Plug
Insert into receptacle, and tighten
threaded collar.
4 Friction Terminals
Some applications will require
cutting off trigger plug and installing
0.250 female friction terminals onto
end of leads.
See wire feeder manual for
threading procedure.
1
3
2
4
OM-1035 Page 5
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SECTION 4 − OPERATION
4-1. Operating The Gun
Ref. 800 749-A
1 Trigger Switch
When pressed, energized wire
feeds and shielding gas flows.
1
4-2. Dual Schedule Mode For M-25M Gun
801 031
1 Trigger Switch (All Models)
Press switch to feed energized wire
and start gas flow.
2 Dual Schedule Mode (M-25M
Models)
Select Dual Schedule to set any
combination of the 9 available
memories.
See welding power source for
display data.
3 Switch A Or B And Increase/
Decrease Function (M-25M
Models)
Selects program A or B and
changes wire feed speed.
Ma t e r i a l
We l d
Timer
>D u a l S c h d
Sw i t ch A
>Me m o r y 1
Sw i t ch B
Memo r y 2
(B) (A)+−
1
Wire Speed
2
3
3
Display On Power Source
OM-1035 Page 6
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SECTION 5 − MAINTENANCE & TROUBLESHOOTING
5-1. Removing Nozzle, Contact Tip, And Adapter, Changing Liner, And Cleaning Gun
Casing
800 797-D
Y Turn off welding power
source/wire feeder.
1 Nozzle
2 Contact Tip
3 Adapter
4 Wire Outlet Guide (M-40 Gun
Only)
. Wire size stamped on tip −
check and match wire size.
Head
Tube
Tools Needed:
3/8 in (7/16 in for M-25, M-25M, and M-40)
Lay gun cable out
straight before installing
new liner.
Remove nozzle,
contact tip, and
adapter.
Unscrew and
remove liner.
Blow out
gun casing.
Cut off wire and
disconnect gun
from feeder.
3/8 or
7/16 in
3/4 in
(20 mm)
Liner
Stickout
Install
Liner
. Thread wire according to
welding power source/wire
feeder manual.
Reassemble gun in
reverse order from
taking it apart.
1
2
3
M-40 Gun
Only
Unscrew outlet
guide, and
remove liner.
4
OM-1035 Page 7
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5-2. Replacing Switch And/Or Head Tube In H-10, M-10, M-15, M-25, And M-25M Gun
Models
Ref. 800 795-C
Tools Needed:
3/4 in
Remove handle
locking nut.
Slide handle.
Secure head
tube in vice.
Loosen jam nut.
Remove from vice
and turn head tube
out by hand.
For M-25 and M-25M models only, install existing
shock washer onto new head tube.
Hand-tighten head tube into cable connector.
Place head tube in vice and tighten until
nuts are tight.
Remove from vice. Reposition handle and install
switch housing. Secure with handle locking nut.
Y Turn Off welding power source
/wire feeder and disconnect gun.
Remove switch housing. Install new switch and
connect leads (polarity is not important). Re-
assemble in reverse order. If replacing head
tube, continue to end of figure.
1
3
2
4
5
8
6
7
OM-1035 Page 8
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5-3. Replacing Head Tube And/Or Switch In M-40 Gun Model
800 751-C
Y Turn Off welding power source
/wire feeder and disconnect gun.
Tools Needed:
7/8 in
1/8 in
5/16 in
1 Secure head
tube in vice.
2 Remove switch
housing.
3 Loosen cable connec-
tor. Remove from vice
and turn head tube
out by hand.
Do not disturb cable connec-
tion between cable connector
and connector nut.
4 Slide handle.
1/8 in
5 Loosen set screws
on body and remove
head tube.
6 Install new head tube. Tighten set
screws to keep head tube in de-
sired position.
7 Hand-tighten head tube into cable connector. Place
head tube in vice and tighten to within 1/8 in (3 mm)
spacing between cable connector and body.
8 Reposition handle
and install switch
housing.
Install shock washer from
existing head tube.
To replace switch:
9 Switch Housing
10 Screw
Remove both mounting screws
from switch housing.
11 Switch
12 Switch Leads
Carefully pull up on leads to remove
switch from housing.
13 Switch Lead Connectors
Remove switch lead connectors
from switch terminals and discard
old switch.
Push switch lead connectors onto
terminals of new switch.
14 Switch Plunger
Insert switch back into switch hous-
ing until it snaps into place.
Install switch housing back onto
handle.
Switch leads must
lay parallel.
9
10
13
11
14
12
OM-1035 Page 9
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5-4. Routine Maintenance
Y Turn Off welding power source and disconnect gun before maintaining.
Each Spool Of Wire
Blow Out
Gun
Casing
Clean
Nozzle
And Check
Contact Tip
3 Months
Control
Cord
Gas
Hose
Gun Cable
Replace
Cracked
Parts
5-5. Troubleshooting
Trouble Remedy
Wire does not feed; wire is not ener
-
gized; wire feeds unevenly.
Check contact tip. Check for kinks in gun cable.
gized; wire feeds unevenly.
Check gun trigger plug connection at welding power source/wire feeder.
Check, and if necessary, replace gun trigger switch (see Section 5-2 or 5-3).
Check contact tip. Check for kinks in gun cable. Blow out liner and gun casing (see Section 5-1).
Weld porosity. Remove weld spatter buildup in nozzle.
Make sure inner head tube is tight in cable connector.
Check shielding gas flow/supply.
Wire feeding stops or does not feed
properly during welding.
Straighten gun cable and/or replace damaged parts (see Section 5-1).
Adjust drive roll pressure (see wire feeder manual).
Change to proper drive roll groove (see wire feeder manual).
Readjust hub tension (see wire feeder manual).
Clean or replace liner if dirty or plugged (see Section 5-1).
Replace drive roll or pressure bearing if worn or slipping (see wire feeder manual).
OM-1035 Page 11
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Quantity
Description
Part
No.
Item
No. M-25
Figure 6-1. H-10/M-10 Gun And
M-15, M-25, & M-25M Gun
Model
M-15 M-25MH-10M-10
1 169 715 NOZZLE, slip type .500 orf flush 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 200 258 NOZZLE, slip type .500 orf flush 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 +169 724 NOZZLE, slip type .500 orf .125 recess 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 +169 725 NOZZLE, slip type .625 orf .125 recess 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 +169 726 NOZZLE, slip type .625 orf flush 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 +169 727 NOZZLE, slip type .625 orf .125 stickout 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +087 299 TIP, contact scr .023 wire x 1.125. . . . . . . . .
2 +000 067 TIP, contact scr .030 wire x 1.125. . . . . . . . .
2 +000 068 TIP, contact scr .035 wire x 1.125. . . . . . . . .
2 +000 069 TIP, contact scr .045 wire x 1.125. . . . . . . . .
3 169 716 ADAPTER, contact tip 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 169 728 ADAPTER, contact tip 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 169 729 ADAPTER, nozzle 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 170 470 RING, retaining 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 170 467 RING, retaining 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 170 468 O-RING 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 169 730 WASHER, shock 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 169 718 TUBE, head 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 169 731 TUBE, head 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 169 738 NUT, locking handle 1 1 2 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 169 719 NUT, jam 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 169 732 NUT, jam 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 169 737 HANDLE 1 1 2 2 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 172 691 HANDLE, (gun end) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
172 690 SWITCH ASSEMBLY, inc/dec 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
602 063 SCREW, 4-40 x .250rndhd slt stl 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 169 741 STRAIN RELIEF, cable 2 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 180 433 CORD, trigger assembly 1 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 180 431 CORD, trigger assembly 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 209 495 CONNECTOR,feeder M−10 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 209 494 CONNECTOR, feeder H−10 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 209486 CONNECTOR, feeder M−15/25 w/o guide 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 079 974 O-RING, .500 ID x .103CS rbr 2 2 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 197 123 O−RING, .312 ID X .062 70 duro buna−n 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 +194 010 LINER, monocoil .023/.025 wire x 15ft (consisting of) 1 1 1 1 1. . . . . . . . . . . . . . . . . . . . . . .
16 +194 011 LINER, monocoil .030/.035 wire x 15ft (consisting of) 1 1 1 1 1. . . . . . . . . . . . . . . . . . . . . . .
16 +194 012 LINER, monocoil .035/.045 wire x 15ft (consisting of) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 +194 014 LINER, monocoil 3/64 AL wire x 10ft (consisting of) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 079 975 O-RING, .187 ID x .103CS rbr 1 1 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 196 255 SWITCH, trigger 1 1 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 079 878 HOUSING PLUG & PINS 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
079 531 CONNECTOR, circ cpc clamp str rlf 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+OPTIONAL
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model is required when ordering parts from your local distributor.
OM-1035 Page 13
Return To Table Of Contents
Description
Part
No.
Item
No.
Figure 6-2. M-40 Gun
Quanti
ty
1 +169 724 NOZZLE, slip type .500 orf .125 recess 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 169 726 NOZZLE, slip type .625 orf flush 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 +169 727 NOZZLE, slip type .625 orf .125 stickout 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 +169 725 NOZZLE, slip type .625 orf .125 recess 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 +200 258 NOZZLE, slip type .500 orf flush 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +000 068 TIP, contact scr .035 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +000 069 TIP, contact scr .045 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +172 024 TIP, contact scr 1/16 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +172 025 TIP, contact scr 5/64 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +172 034 TIP, contact scr 3/64 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +087 299 TIP, contact scr .023 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +000 067 TIP, contact scr .030 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +187 117 TIP, contact scr heavy duty .035 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 +187 188 TIP, contact scr heavy duty .045 wire x 1.125 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 169 728 ADAPTER, contact tip 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 169 729 ADAPTER, nozzle 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 170 467 RING, retaining 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 170 468 O-RING 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 169 730 WASHER, shock 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 169 744 TUBE, head 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 170 453 BODY 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 169 746 CONNECTOR, switch lead 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 170 454 HANDLE 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 180 432 CORD, trigger assembly 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 169 745 CONNECTOR, feeder (consisting of) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 079 974 O-RING, .500 ID x .103CS rbr 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 194 010 LINER, monocoil .023/.025 wire x 15ft (consisting of) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 194 011 LINER, monocoil .030/.035 wire x 15ft (consisting of) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 194 012 LINER, monocoil .035/.045 wire x 15ft (consisting of) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 194 013 LINER, monocoil 1/16 − 5/64 wire x 15ft (consisting of) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 194 014 LINER, monocoil 3/64 aluminum wire x 15ft (consisting of) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 079 975 O-RING, .187 ID x .103CS rbr 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 169 723 GUIDE, outlet 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 170 458 STRAIN RELIEF, cable 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 170 455 SWITCH, trigger 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 170 456 HOUSING, switch w/screws 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 602 177 SCREW, set .250-20 x .250 knrlpt sch stl 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 079 878 HOUSING PLUG & PINS 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
079 531 CONNECTOR, circ cpc clamp str rlf 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+OPTIONAL
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model is required when ordering parts from your local distributor.
Notes
Work like a Pro!
Pros weld and cut
safely. Read the
safety rules at
the beginning
of this manual.
Warranty Questions?
Call
1-800-4-A-MILLER
for your local
Miller distributor.
miller_warr 8/03
Your distributor also gives
you ...
Service
You always get the fast,
reliable response you
need. Most replacement
parts can be in your
hands in 24 hours.
Support
Need fast answers to the
tough welding questions?
Contact your distributor.
The expertise of the
distributor and Miller is
there to help you, every
step of the way.
Effective January 1, 2003
(Equipment with a serial number preface of “LC” or newer)
This limited warranty supersedes all previous Miller warranties and is exclusive with no other
guarantees or warranties expressed or implied.
LIMITED WARRANTY − Subject to the terms and conditions
below, Miller Electric Mfg. Co., Appleton, Wisconsin, warrants
to its original retail purchaser that new Miller equipment sold
after the effective date of this limited warranty is free of defects
in material and workmanship at the time it is shipped by Miller.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS.
Within the warranty periods listed below, Miller will repair or
replace any warranted parts or components that fail due to
such defects in material or workmanship. Miller must be
notified in writing within thirty (30) days of such defect or
failure, at which time Miller will provide instructions on the
warranty claim procedures to be followed.
Miller shall honor warranty claims on warranted equipment
listed below in the event of such a failure within the warranty
time periods. All warranty time periods start on the date that
the equipment was delivered to the original retail purchaser, or
one year after the equipment is sent to a North American
distributor or eighteen months after the equipment is sent to an
International distributor.
1. 5 Years Parts — 3 Years Labor
* Original main power rectifiers
* Inverters (input and output rectifiers only)
2. 3 Years — Parts and Labor
* Transformer/Rectifier Power Sources
* Plasma Arc Cutting Power Sources
* Semi-Automatic and Automatic Wire Feeders
* Inverter Power Supplies
* Intellitig
* Maxstar 150
* Engine Driven Welding Generators
(NOTE: Engines are warranted separately by
the engine manufacturer.)
3. 1 Year — Parts and Labor Unless Specified
* DS-2 Wire Feeder
* Motor Driven Guns (w/exception of Spoolmate
Spoolguns)
* Process Controllers
* Positioners and Controllers
* Automatic Motion Devices
* RFCS Foot Controls
* Induction Heating Power Sources
* Water Coolant Systems
* Flowgauge and Flowmeter Regulators (No Labor)
* HF Units
* Grids
* Maxstar 85, 140
* Spot Welders
* Load Banks
* Racks
* Running Gear/Trailers
* Plasma Cutting Torches (except APT & SAF
Models)
* Field Options
(NOTE: Field options are covered under True
Blue for the remaining warranty period of the
product they are installed in, or for a minimum of
one year — whichever is greater.)
4. 6 Months — Batteries
5. 90 Days — Parts
* MIG Guns/TIG Torches
* Induction Heating Coils and Blankets
* APT & SAF Model Plasma Cutting Torches
* Remote Controls
* Accessory Kits
* Replacement Parts (No labor)
* Spoolmate Spoolguns
* Canvas Covers
Miller’s True Blue Limited Warranty shall not apply to:
1. Consumable components; such as contact tips,
cutting nozzles, contactors, brushes, slip rings,
relays or parts that fail due to normal wear.
(Exception: brushes, slip rings, and relays are
covered on Bobcat, Trailblazer, and Legend models.)
2. Items furnished by Miller, but manufactured by others,
such as engines or trade accessories. These items are
covered by the manufacturer’s warranty, if any.
3. Equipment that has been modified by any party other
than Miller, or equipment that has been improperly
installed, improperly operated or misused based upon
industry standards, or equipment which has not had
reasonable and necessary maintenance, or equipment
which has been used for operation outside of the
specifications for the equipment.
MILLER PRODUCTS ARE INTENDED FOR PURCHASE
AND USE BY COMMERCIAL/INDUSTRIAL USERS AND
PERSONS TRAINED AND EXPERIENCED IN THE USE
AND MAINTENANCE OF WELDING EQUIPMENT.
In the event of a warranty claim covered by this warranty, the
exclusive remedies shall be, at Miller’s option: (1) repair; or (2)
replacement; or, where authorized in writing by Miller in
appropriate cases, (3) the reasonable cost of repair or
replacement at an authorized Miller service station; or (4)
payment of or credit for the purchase price (less reasonable
depreciation based upon actual use) upon return of the goods
at customer’s risk and expense. Miller’s option of repair or
replacement will be F.O.B., Factory at Appleton, Wisconsin, or
F.O.B. at a Miller authorized service facility as determined by
Miller. Therefore no compensation or reimbursement for
transportation costs of any kind will be allowed.
TO THE EXTENT PERMITTED BY LAW, THE REMEDIES
PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE
REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF
PROFIT), WHETHER BASED ON CONTRACT, TORT OR
ANY OTHER LEGAL THEORY.
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN
AND ANY IMPLIED WARRANTY, GUARANTY OR
REPRESENTATION AS TO PERFORMANCE, AND ANY
REMEDY FOR BREACH OF CONTRACT TORT OR ANY
OTHER LEGAL THEORY 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 FITNESS FOR PARTICULAR
PURPOSE, WITH RESPECT TO ANY AND ALL
EQUIPMENT FURNISHED BY MILLER IS EXCLUDED AND
DISCLAIMED BY MILLER.
Some states in the U.S.A. do not allow limitations of how long
an implied warranty lasts, or the exclusion of incidental,
indirect, special or consequential damages, so the above
limitation or exclusion may not apply to you. This warranty
provides specific legal rights, and other rights may be
available, but may vary from state to state.
In Canada, legislation in some provinces provides for certain
additional warranties or remedies other than as stated herein,
and to the extent that they may not be waived, the limitations
and exclusions set out above may not apply. This Limited
Warranty provides specific legal rights, and other rights may
be available, but may vary from province to province.
PRINTED IN USA 2004 Miller Electric Mfg. Co. 1/04
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
International Headquarters−USA
USA Phone: 920-735-4505 Auto-Attended
USA & Canada FAX: 920-735-4134
International FAX: 920-735-4125
European Headquarters −
United Kingdom
Phone: 44 (0) 1204-593493
FAX: 44 (0) 1204-598066
www.MillerWelds.com
Model Name Serial/Style Number
Purchase Date (Date which equipment was delivered to original customer.)
Distributor
Address
City
State Zip
Please complete and retain with your personal records.
Always provide Model Name and Serial/Style Number.
Call 1-800-4-A-Miller or see our website at www.MillerWelds.com
to locate a DISTRIBUTOR or SERVICE AGENCY near you.
Welding Supplies and Consumables
Options and Accessories
Personal Safety Equipment
Service and Repair
Replacement Parts
Training (Schools, Videos, Books)
Technical Manuals (Servicing Information
and Parts)
Circuit Diagrams
Welding Process Handbooks
Contact the Delivering Carrier to:
For Service
Owner’s Record
File a claim for loss or damage during
shipment.
For assistance in filing or settling claims, contact
your distributor and/or equipment manufacturer’s
Transportation Department.
Contact your Distributor for:
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Miller M-40 GUN Owner's manual
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