OWNER’S MANUAL
© 2008 MILLER Electric Mfg. Co.
OM-239 303-A 2008−06
Running Gear No. 30B (300 511)
1. Safety Symbol Definitions
DANGER! − Indicates a hazardous situation which, if not
avoided, will result in death or serious injury. The possible
hazards are shown in the adjoining symbols or explained
in the text.
Beware of electric shock from wiring. Disconnect input
power. Disconnect input plug or power conductors from
deenergized supply BEFORE moving power source.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury. The possible ha-
zards are shown in the adjoining symbols or explained in
the text.
Properly install and secure power source into holes
provided on cart. Always secure or remove any tools
stored on cart before moving unit. Cart is only designed to
handle weight of power source, cables, torch, and a few
simple tools − do not overload cart with any additional
weight.
NOTICE
Indicates statements not related to personal injury.
Indicates special instructions.
Wear safety glasses with side shields.
2. Tools Needed
Tools Needed:
3/8, 1/2 in
3/8, 1/2 in
OM-239 303 Page 2
3. Running Gear Assembly
Description (Qty)
Item
No.
1 239 300 Bracket, Running Gear RH (1)
2 601 944 Screw, 312-18 x .75 (4)
3 196 115 Pan, Bottom (1)
4 239 299 Bracket, Running Gear LH (1)
5 195 622 Label, Warning (2)
6 172 684 Nut, 312-18 .50 Hex (2)
7 197 195 Bracket, mtg casters (1)
8 109 318 Caster, 2.5 in (2)
9 081 960 Retaining Ring (2)
10 196 112 Wheel, 8 in (2)
11 602 250 Washer, .812 ID flat (4)
12 196 107 Axle (1)
13 172 684 Nut, 312-18 .50 Hex (4)
Be sure to provide Model when ordering
replacement parts.
Go to Section 4 for cord wrap installation
procedures.
. Both rear bolts must be installed
in bottom pan before installing
axle to running gear.
. Be sure that recessed
opening on hub is to
the outside on axle to
allow installation of
retaining ring.
1
2
3
4
5
6
7
8
9
10
11
12
13
Remove paint from
axle grooves (12)
before installing
retaining rings (9).
Ref. 805 277-A
OM-239 303 Page 3
4. Installing Power Source/Cord Wrap
Ref. 803 298-B
14 209 022 Support Bracket (1)
15 602 154 Screw, 250-20 x .50 (10)
16 602 239 Washer, .250 ID flat (6)
17 601 865 Nut, 250-20 (6)
18 239 302 Bracket, Adapter Right (1)
19 239 301 Bracket, Adapter Left (1)
. Two pieces of .250 screw, washer and
nut will not be used except for Spectrum
875 installation.
Install left and right adapter brackets and
support bracket to left and right running gear
brackets as shown.
. For the Spectrum 875, the left and right
adapter brackets must be rotated and
installed as shown.
Choose the appropriate mounting holes for
your size machine. Slide adapter brackets
to the outward extremes of the holes and
tighten the .250-20 x .50 hardware as
shown.
. For Spectrum 875, first install adapter
brackets to the power source, then
mount power source to running gear.
Remove the four (4) side panel screws from
left and right side of power source that align
with holes in adapter brackets.
Place power source inside the adapter
brackets, resting on the running gear
brackets.
Reinstall screws through holes in adapter
brackets and back into the power source
side panels. Tighten side panel screws to
secure power source to running gear.
20 196 591 Cord Wrap (1)
. Cord wrap can be installed to either left
or right side of running gear. NOTE: ma-
chine must be secured in place before
cord wrap is installed.
Install four (4) .250-20 x .50 self-tapping
screws into the holes on the desired side of
the running gear brackets to mount the cord
wrap. Do not tighten hardware.
Install cord wrap. NOTE: cord wrap has en-
larged keyhole shaped slots that slide over
screw heads and set down on the screws.
Tighten all hardware.
Spectrum 1000, 1251,
2050 & 3080
Spectrum 625
Spectrum 125C, 375
& Thunder
Mounting Holes For
15
18
19
20
15
14
16
17
Spectrum 875
-
1
-
2
-
3
Miller RUNNING GEAR NO. 30B (300 511) Owner's manual
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