OWNER’S MANUAL
© 2006 MILLER Electric Mfg. Co.
OM-680 140 094H
2006−07
For Running Gear/Cylinder Rack (042 537)
1. Safety Symbol Definitions
Warning! Watch Out! There are possible hazards as
shown in the adjoining symbols.
Cylinders contain gas under high pressure and can ex-
plode if damaged. Never let a welding electrode touch
any cylinder. Always secure cylinder to running gear, wall,
or other stationary support.
Beware of electric shock from wiring. Disconnect input
power before installing this kit. Reinstall all panels and
covers.
Wear safety glasses with side shields.
Falling equipment can cause serious personal injury and
equipment damage. Use lifting eye to lift unit only, not
trailer, gas cylinders, or any other accessories. Use
equipment of adequate capacity to lift unit or parts such
as engine or generator.
ST-800 409 / ST-146 246-D
A
B
C
D
E
*F
Inches
27
10-3/4
10
54-1/2
33
40-3/4
Millimeters
686
273
254
1384
838
1035
Weight
Net Ship
105 lbs 195 lbs
(89 kg)(48 kg)
* Adjustable from 32-1/2 in (826 mm)
to 40-3/4 in (1035 mm)
A
B
D
E
F
C
Do not put feeder where
welding wire hits cylinder.
Figure 1. Assembled Running Gear/Cylinder Rack
OM-680 Page 2
Tools Needed:
Ref. ST-161 976-F / ST-141 191-D
19
18
17
Part
No.
Item
No.
Description (Qty)
2
1
34
Crimp Item 2.
1 022 617 Cylinder Chain (2)
2 602 389 · S-Hook (1)
3 602 387 · Chain (1)
4 168 663 · Hook (1)
5 004 214 Bushing, 1-5/8 ID x 2 in mtg hole (4)
6 155 585 Feeder Tray (1)
7 155 587 Handle (1)
8 097 153 Screw, 5/16-18 x 1/2 (28)
9 155 588 Cable Hanger (2)
10 156 056 Forward Strut (2)
11 155 891 Handle Spacer (2)
12 010 910 Washer, 3/8 flat (8)
13 080 389 Screw, 5/16-18 x 1 in (12)
14 168 247 Caster, 5 in (2)
15 156 052 Base (1)
16 156 057 Rear Strut (2)
17 121 614 Retaining Ring (2)
18 602 250 Washer, 13/16 flat (2)
19 209 869 Wheel, 10 in (2)
Hardware For Mounting Components
602 101 Screw, 10-24 x 5/8 (20, 60 Series Feeders) (8)
602 112 Screw, 10-24 x 1-1/4 (Optima, 50 Series
Feeders) (6)
089 799 Screw, 1/4-20 x 1/2 (Maxtrons, Turntable) (9)
604 224 Screw, 1/4-20 x 3/4 (XMT-400) (4)
108 942 Screw, 1/4-20 x 1-1/4 (XR Feeders) (2)
601 965 Screw, 3/8-16 x 1 (Arc Pak) (4)
602 238 Washer, 3/16 flat (20, 50, 60 Series Feeders) (4)
602 203 Washer, No. 10 lock (20, 60 Series Feeders) (8)
602 207 Washer, 1/4 lock (Maxtrons, Turntables, XR
Feeders) (11)
602 213 Washer, 3/8 lock (Arc Pak) (4)
131 749 Nut, 10-24 (Optima, 20, 50, 60 Series Feeders) (8)
601 865 Nut, 1/4-20 (Maxtrons, Turntables,
XR Feeders) (11)
601 872 Nut, 3/8-16 (Arc Pak) (4)
156 493 Stand-Off, 10-24 x 1-3/8 (20, 60 Series Feeders) (4)
Be sure to provide Model when ordering replacement parts.
Remove paint from
axle grooves before
installing retaining
rings (17).
Part
No.
Description (Qty)
1/2 in
1/2 in
16
15
14
5
6
7
13
9
10
11
Optional
Optional
12
13
Install handle (7) at desired
height using mounting holes
in forward strut (10).
8
8
8
Figure 2. Assembling Running Gear/Cylinder Rack
OM-680 Page 3
1 Vertical-Style Cooling Unit
2 Gas Cylinder
Secure gas cylinder and/or cooling
unit with chain.
3 Wire Feeder
Holes are provided to install various
models in different locations; see
Figures 4 and 5.
4 Optima Synergic Control
5 10-24 x 1-1/4 in Screw
6 Nut
Four installation locations are pro-
vided; select location, and install
two supplied mounting screws as
shown. Hang control on mounting
screws.
7 Horizontal-Style Cooling Unit
8 Circular-Style Cooling Unit
Place cooling unit on flat part of
base; allow for proper clearance
between unit and welding power
source.
9 Welding Power Source
XMT Models:
Position unit so four mounting holes
align and secure using supplied
screws, nuts and lock washers.
804 704-A / Ref. ST-137 227-A / S-0514 / Ref. ST-128 574
7/16, 3/8, 9/16 in
Tools Needed:
1/4 in
(6.4 mm)
56
1
2
3
8
7
4
9
XMT 350
XMT 456
Figure 3. Installing Welding Power Source, Gas Cylinder, Cooling Unit, And Synergic Control
OM-680 Page 4
Tools Needed:
ST-156 481 / Ref. ST-156 924 / ST-159 281 / Ref. ST-143 327-A / ST-125 700-B
2
ABC
ABC
ABC
1 Feeder Tray
2 Base Mounting Hole
3 Wire Feeder Base
4 Stand-Off
5 20 Series Wire Feeder
Select one of three installation loca-
tions (A, B, or C) and install using
supplied stand-offs, 10-24 x 5/8 in
screws and lock washers.
3
4
1
1
25
20 Series
Figure 4. Installing 20 Series Wire Feeders
OM-680 Page 5
1 Feeder Tray
2 Base Mounting Hole
3 Wire Feeder Base
4 Stand-Off
5 60 and 70 Series Wire Feed-
er (Single Drive Model)
Select one of three installation loca-
tions (A, B, or C) and install using
supplied stand-offs, 10-24 x 5/8 in
screws and lock washers.
Tools Needed:
ST-156 481 / Ref. ST-156 924 / ST-159 281 / Ref. ST-143 327-A / ST-125 700-B
2
5
ACB
ACB
C
C
AB
AB
A
A
A
A
6 60 and 70 Series Wire Feed-
er (Dual Drive Model)
Locate four mounting holes on tray
and install using supplied stand-
offs, 10-24 x 5/8 in screws and lock
washers.
3
4
1
1
1
2
6
70 Series
60 Series
70 Series
60 Series
6
5
Figure 5. Installing 60 and 70 Series Wire Feeders
OM-680 Page 6
1 Feeder Tray
2 Base Mounting Hole
3 Turntable Base
Select one of four installation loca-
tions; A thru C use six mounting
holes, and D uses five holes. Install
base to feeder tray using supplied
1/4-20 x 1/2 in screws, nuts and
lock washers. Install wire feeder
onto Turntable (see Turntable Own-
er’s Manual).
7/16, 3/8 in
Tools Needed:
ST-156 481 / ST-083 487-C / ST-155 254 / ST-128 502
3
2
ABC D
ABC D
ABC D
AB D
AB
AB D
4
2
AB C
AB C
5
2
ACB
ACB
C
C
AB
AB
4 XR Wire Feeder
Remove feeder right side panel,
and open left access door (see wire
feeder Owner’s Manual). Remove
and discard both existing center
mounting screws.
Select one of three installation loca-
tions (A, B, or C), align both holes,
and install using supplied 1/4-20 x
1-1/4 in screws, nuts and lock
washers. Reinstall side panel and
close access door.
5 50 Series Wire Feeder
Select one of three installation loca-
tions (A, B, or C) and install using
supplied 10-24 x 1-1/4 in screws,
nuts and lock washers.
C
C
C
1
1
1
Figure 6. Installing Turntable Base, XR Wire Feeders, And 50 Series Wire Feeders
-
1
-
2
-
3
-
4
-
5
-
6
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