Miller RUNNING GEAR User manual

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DO NOT OPERATE THIS EQUIPMENT
UNTIL THIS MANUAL
HAS BEEN READ AND UNDERSTOOD.
RUNNING GEAR
OPERATOR'S MANUAL
Miller-St. Nazianz, Inc.
P.O. Box 127
511 East Main St.
ST. NAZIANZ, WI 54232
920-773-2121
FAX: [phone]
12.10811 4/05

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The serial number for this unit is located on the Left Rear Bolster diagonal.
Miller-St. Nazianz reserves the right to make improvements in design or changes
in specifications at any time, without incurring any obligation to owners of units
previously sold.
IDENTIFYING TERMS
"LEFT" and "RIGHT" are determined from a position standing at the rear of the
unit looking toward the direction of travel. "FRONT" is the leading end and
"REAR" is the trailing end when the tractor is traveling forward.
WARRANTY REGISTRATION
The DELIVERY AND WARRANTY REGISTRATION CARD found in this manual
must be completed and signed to validate your warranty protection. You must
read and understand the places where you attest to having received instructions
as to care, adjustments, safe operation and applicable warranty policy. The
terms and conditions of the warranty are specified on the inside back cover of
this manual.
GENERAL INFORMATION
The purpose of this manual is to assist the operator in maintaining and operating
the Running Gear. Read it carefully; it furnishes information and instructions that
will help you achieve years of dependable service.
Each section of this manual is clearly identified and is divided into smaller
sections.
All replacement parts should be obtained from, or ordered through your dealer.
Give complete information when ordering service parts including the model
number and serial number. Record numbers in the space provided as a handy
record for quick reference.
Model No. Serial No.

1
TABLE OF CONTENTS
General Information .......................................... Inside Front Cover
Table of Contents ......................................................................... 1
Pre-Delivery/Delivery Check List .................................................. 2
Safety Precautions .................................................................... 3,4
Decal Location .............................................................................. 4
Lubrication .................................................................................. 4,5
Torque Specifications ................................................................... 6
Set-up & Assembly .................................................................... 7,8
Adjustments .................................................................... 9,10,11,12
Specifications.............................................................................. 13
Optional Features & Accessories ...........................................14,15
Warranty ............................................................ Inside Back Cover

2
RUNNING GEAR
PRE-DELIVERY CHECK LIST
After the Running Gear has been completely
set-up, check to be certain it is in correct running
order before delivering it to the customer. The
following is a list of points to inspect. Check off
each item as you have made the proper
adjustments and found the item operating
satisfactorily. Any adjustment must be made
according to specifications defined in this manual.
[] All grease fittings have been lubricated. See
“Lubrication” section in this manual.
[] All mechanisms are operating trouble free.
[] All bolts and other fasteners are tight and
torqued per torque specifications. Page 6.
Dealer’s
Name
Signature of Pre-Delivery Inspector
Date of Inspection
Model No.
Serial No.
DELIVERY CHECK LIST
The following check list is an important
reminder of valuable information that MUST be
passed on to the customer at the time the unit is
delivered. Check off each item as you explain it to
the customer.
[] Give the customer his Operator’s Manual.
Instruct them to be sure to read and completely
understand its contents BEFORE attempting to
operate the unit.
[] Explain the warranty.
[] Explain and review with the customer the
Safety Precautions section of this manual.
[] Explain and review with the customer the
Operating and Safety Equipment section of this
manual.
[] Explain that regular lubrication and proper
adjustments are required for continued proper
operation and long life. Review with the customer
the Maintenance and Adjustments sections of this
manual.
[] Complete the Delivery Registration Card and
have customer sign it and return it to Miller-St.
Nazianz, Inc.
I acknowledge that above points were reviewed
with me at the time of delivery.
Customer’s Signature
Date Delivered
(Customer Copy)

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RUNNING GEAR
PRE-DELIVERY CHECK LIST
After the Running Gear has been completely
set-up, check to be certain it is in correct running
order before delivering it to the customer. The
following is a list of points to inspect. Check off
each item as you have made the proper
adjustments and found the item operating
satisfactorily. Any adjustment must be made
according to specifications defined in this manual.
[] All grease fittings have been lubricated. See
“Lubrication” section in this manual.
[] All mechanisms are operating trouble free.
[] All bolts and other fasteners are tight and
torqued per torque specifications. Page 6.
Dealer’s Name
Signature of Pre-Delivery Inspector
Date of Inspection
Model No.
Serial No.
DELIVERY CHECK LIST
The following check list is an important
reminder of valuable information that MUST be
passed on to the customer at the time the unit is
delivered. Check off each item as you explain it to
the customer.
[] Give the customer his Operator’s Manual.
Instruct them to be sure to read and completely
understand its contents BEFORE attempting to
operate the unit.
[] Explain the warranty.
[] Explain and review with the customer the
Safety Precautions section of this manual.
[] Explain and review with the customer the
Operating and Safety Equipment section of this
manual.
[] Explain that regular lubrication and proper
adjustments are required for continued proper
operation and long life. Review with the customer
the Maintenance and Adjustments sections of this
manual.
[] Complete the Delivery Registration Card and
have customer sign it and return it to Miller-St.
Nazianz, Inc.
I acknowledge that above points were reviewed
with me at the time of delivery.
Customer’s Signature
Date Delivered
(Dealer Copy)

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3
Good safety practices dictate that you never tow an implement unless the towing
vehicle weighs at least one-and-one half (1-1/2) times the weight of the towed
implement and its load. For any public highway travel and to be in compliance
with this rule, be sure that your tractor or truck is heavy enough to counterbal-
ance the total (loaded) weight of the towed implement(s).
DO NOT travel on public highways unless adequate warning devices are used to
alert other drivers.
DO NOT drive too close to ditches or creeks; be sure surrounding ground has
adequate strength to support the weight of the loaded running gear.
DO NOT attempt to ride on the pole of the running gear.
DO NOT tow running gear faster than 20 mph.
DO NOT tow running gears in tandem on public roads.
ALWAYS use a safety or locking hitchpin.
ALWAYS keep the towing vehicle in gear when descending steep grades.
ALWAYS travel slowly around curves and along sidehills to prevent tipping.
BE SURE the tires are properly and evenly inflated at all times.
BE SURE the wheel nuts and other fasteners are kept securely tightened at all
times.
ALWAYS follow state and local regulations regarding a safety chain and auxiliary
lighting when towing farm equipment on a public highway. Be sure to check with
local law enforcement agencies for your own particular regulations. Only a
safety chain (not an elastic or nylon/plastic tow strap) should be used to retain
the connection between the towing and towed machines in the event of separa-
tion of the primary attaching system.
Block the tires, front and back, so that the running gear will not roll when discon-
necting from the towing vehicle.
Before you attempt to operate this running gear, read and study the
following safety information. In addition, make sure that every individual
who operates or works with this equipment, whether family member or
employee, is familiar with these safety precautions. The Operator's Manual
warns you of dangers and should be read and observed closely.
WARNING
SAFETY PRECAUTIONS
This symbol is used to call your attention to instructions
concerning your personal safety. Be sure to observe and
follow these instructions. Take time to be careful.

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SAFETY PRECAUTIONS
WARNING
To ensure continued safe operation, replace damaged or worn-out parts with
genuine Miller service parts, before attempting to operate equipment.
DECAL LOCATION
LUBRICATION
GREASING
It is well to remember that a sufficient amount of oil or grease will prevent
excessive part wear and early failure. Grease fittings are provided on the
running gear at several important pivot points. Fittings should be lubricated at
least four times a year. Use a good grade of lithium base grease. Wipe dirt from
the fittings before greasing to prevent any dirt from being forced into the bearings
or pivots. Replace any missing fittings. To minimize dirt build-up, avoid exces-
sive greasing.
NOTE: In addition to the fittings, inspect and repack the wheel bearings at least
twice a year. See "Wheel Bearings" on next page.
Grease Fitting Locations:
1. Drawbar vertical pivot
2. Front spindle pivot (each side)
3. Ball joints (4 places)
4. Drawbar horizontal pivot
5. Tandem pivot (each side on tandem units)

5
LUBRICATION (continued)
WHEEL BEARINGS
Type of Grease: Use a good grade of Lithium Base Wheel Bearing Grease.
Carefully raise and support each wheel as repacking is performed.
Remove the hub from the spindle. Inspect the inner and outer cups in the hub. Be
sure both cups are seated against the shoulders in the hub.
Pack the cones with grease. A pressure grease packer is recommended. To hand
pack cones, force grease under cage between rollers from large end of rollers until
grease shows at small end. Fill the hub with grease to I.D. of the cup race, then
place the cone into the cup. Make sure the cone is straight!
WARNING: Failure to correctly lubricate bearing and maintain proper
lubrication may result in bearing damage which could cause wheel to lock
and come off during operation.
Install grease seal. Support the seal so as not to bend the case during installation.
Use grease to lubricate the seal lip.
Place the hub on to the spindle. Rotate the hub while doing this so that the seal lip
does not fold under as the lip goes on the seat of the spindle.
Fill hub cavity with grease.
Place the outer cone on the spindle and into the cup.
Assemble the washer and nut onto the spindle and tighten the nut to 15-20 ft/lbs,
while rotating the hub. back off the nut until it aligns the next available slot with the
cotter pin hole. Install the cotter pin and bend around the nut. There should be
between .001" - .005" end play.
WARNING: Failure to back off adjusting nut may cause bearing to run hot
and be damaged. Wheel could then lock and come off during operation.
Grease inside of dust cover and install dust cover.
Lower the wheel to the ground and repeat for the other wheels.

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TORQUE SPECIFICATIONS
NOTE: Use these torque values when tightening hardware (excluding: Lock-
nuts and Self-tapping, Thread Forming and Sheet Metal Screws) unless speci-
fied otherwise.
All torque values are in Lb-Ft except those marked with an * which are Lb-In (for
metric torque value Nm, multiply Lb-Ft value by 1.355 or Lb-In value by 0.113)

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SET-UP & ASSEMBLY
CAUTION
Handle the component assemblies carefully to avoid injury; they are very heavy
and awkward.
NOTE: Use a lift truck or overhead hoist to aid in the handling the heavy compo-
nents. Before proceeding, have the tires mounted on the wheels and know what
the required reach and bolster settings should be.
CAUTION
If running gear is ordered without mounted tires, it is recommended that tire
mounting only be attempted by a qualified tire manufacturer's installer or properly
trained personnel according to the manufacturer's instructions.
REAR AXLE
Couple the rear axle assembly to the reach pole with the (4) 5/8" x 1-1/2" Gr.5
bolts, (8) 5/8 dia. flatwashers, HT and (4) nylon insert lock nuts. Torque to 110
ft. lbs.
FRONT AXLE
Couple the front axle assembly to the reach pole with the (4) 5/8" x 1-1/2" Gr.5
bolts, (8) 5/8 dia. flatwashers, Ht and (4) nylon insert lock nuts. Torque to 110 ft.
lbs.
Safely raise and properly support the assembled axles and reach pole and
proceed to securely fasten the wheel and tires to the hubs with the (6 or 8) wheel
nuts torqued from 90 to 105 ft-lb.
NOTE: Flanged style wheel nuts are ONLY to be used with flat dish style wheels
(4.25 x 22.5 Tires).
CAUTION: DO NOT use flanged style wheel nuts with formed dish style wheels.

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POLE
Securely fasten the pole to the pivot assembly on the front axle using the
machined bolt and nylon insert locknut.
Fasten the assist spring to the running gear steering box with the included
hardware. Adjust spring tension by loosening double nut on spring rod. Then
tighten or loosen the two nuts according to whichever adjustment you are
seeking and retighten the nuts to each other.
TANDEM
Tandems must be mounted correctly for proper performance. The tandem
when mounted will have the leg with the longer distance between the tandem
pivot and the spindle towards the front. Set tandems in place and slide the
shaft assembly through the pivot holes and the bushings in the tandems.
Secure in place with a nylon insert locknut. Grease tandem pivot.
Note: Tandems are the same for the left and right side.
SET-UP & ASSEMBLY (continued)

9
ADJUSTMENTS
POLE LENGTH
The 10 ton through the 14 ton running gears have poles that can be lengthened
(Fig. 1).
Latch Hole Stop Pin Hole
Position Position
Telepole standard length 1 B
Telepole Lengthened 2 A
IMPORTANT: Use only the latch hole location and stop pin hole location
combination listed above for the latch to function properly.
To change the length of the pole, remove the latch and hardware from the inner
pole extension and relocate per chart. Remove the horizontal stop pin and
hardware from the outer pole and relocate according to corresponding latch hole
position. Replace the hardware.

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ADJUSTMENTS ( continued)
POLE
All running gear come with an extendible pole. The pole extends to facilitate
hook-ups.
To use the extendible pole, back the towing vehicle near the hitch clevis. Then
lift the latch and extend the pole. Securely attach the hitch clevis to the towing
vehicle with a locking hitchpin. Slowly back up the towing vehicle to relatch the
pole.
ASSIST SPRING
Your running gear comes with an adjustable assist spring. To adjust, loosen the
double nut on the spring rod. Then tighten or loosen the two nuts according to
whichever adjustment you are seeking and retighten the nuts to each other.
TIRES
WARNING
Always order and install tires and wheels with appropriate capacity to meet or
exceed the anticipated weight to be placed on the running gear.
The pressure should be frequently checked and maintained at the appropriate
values.
WHEELS
WARNING
Frequently check the wheel nuts to make sure they are securely fastened. Nuts
should be torqued from 90 - 105 ft-lb.

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ADJUSTMENTS (continued)
WHEEL BEARINGS
Type of Grease: Use a good grade of Lithium Base Wheel Bearing Grease.
Carefully raise and support each wheel as repacking and adjustment is performed.
Remove the hub from the spindle. Inspect the inner and outer cups in the hub. Be
sure both cups are seated against the shoulders in the hub.
Pack the cones with grease. A pressure grease packer is recommended. To hand
pack cones, force grease under cage between rollers from large end of rollers until
grease shows at small end. Fill the hub with grease to I.D. of the cup race, then
place the cone into the cup. Make sure the cone is straight!
WARNING: Failure to correctly lubricate bearing and maintain proper
lubrication may result in bearing damage which could cause wheel to lock
and come off during operation.
Install grease seal. Support the seal so as not to bend the case during installation.
Use grease to lubricate the seal lip.
Place the hub on to the spindle. Rotate the hub while doing this so that the seal lip
does not fold under as the lip goes on the seat of the spindle.
Fill hub cavity with grease.
Place the outer cone on the spindle and into the cup.
Assemble the washer and nut onto the spindle and tighten the nut to 15-20 ft/lbs,
while rotating the hub. back off the nut until it aligns the next available slot with the
cotter pin hole. Install the cotter pin and bend around the nut. There should be
between .001" - .005" end play.
WARNING: Failure to back off adjusting nut may cause bearing to run hot
and be damaged. Wheel could then lock and come off during operation.
Grease inside of dust cover and install dust cover.
Lower the wheel to the ground and repeat for the other wheels.

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ADJUSTMENTS (continued)
REACH
The running gear reach can be adjusted from 105" to 150". To adjust the reach,
remove the (8) 5/8" x 1-1/2" bolts that secure the reach. Then slide the reach in
or out to the desired length, and resecure the (8) 5/8" x 1-1/2" bolts. There is an
optional 150" to 180" reach available and is standard on the 17 Ton running gear.
TOE-IN
The initial "toe-in" is factory set. However, if excessive wagon sway or tire wear
is noted the "toe-in" should be checked and readjusted in the following manner:
1. Check ball joints, if loose retorque to 40 ft. lbs. (min.) for the
10-14 ton running gear & 100 ft. lbs. (min). for 15-18 ton running
gear. Tighten to next slot in nut and replace the cotter pin.
2. Adjust the length A1 to within 1/16" of length A2.
3. Adjust the tie rod length, by loosening the nuts and rotating the
tube, to make length B1 equal to length B2.
4. Equally adjust the tie rod length, by rotating the tubes, so that
length C is 1/4" to 1/2" shorter than length D.
5. Retighten the nuts on the tie rod tubes.

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SPECIFICATIONS
GENERAL TABLE OF SPECIFICATIONS & DIMENSIONS
DESCRIPTION 10T-6 12TT-6 12T-8 14TT-8 15T-8 17T-8 18TT-8
Approx. Height 37-1/2"
(12.5L tires) (with 425 x
bolster to ground 27-1/4” 27-1/4” 27-1/4” 27-1/4” 29-3/16”22.5" tires) 29-3/16”
Approx. Height
(14L x 16.1 tires)
bolster to ground — — 28-3/4” 28-3/4” 32”—32”
Approx. Height
(16.5 x 16.1 tires)
bolster to ground — — 30” — 33-1/2”—33-1/2”
Spindle Diameter 2” 2” 2-1/4” 2-1/4” 2-3/4” 3” 2-3/4”
Hubs 6 bolt 6 bolt 8 bolt 8 bolt 8 bolt 8 bolt 8 bolt
Tread Width 80” 80” 80” 80” 80” 81” 80”
Tandem No Yes No Yes No No Yes
Bolster Stake
Spacing 42” 42” 42” 42” 42” 42” 42”
Adjustable
Extending
Hitch Pole STD STD STD STD STD STD STD
Adjustable
Spring Assist
for Pole STD STD STD STD STD STD STD
Wheelbase 96-150” 96-150” 96-150” 96-150” 96-150” 147-177” 96-150”
Approx. Weight 840# 1262# 938# 1324# 1230# 1490# 1822#
(without tires)
ASAE Rated 10 12 12 14 15 17 18
Capacity (tons)

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STEERING STOP KIT
For those 12 Ton 4 Wheel Running Gear applications with 16.5 tires, a steering stop kit
should be obtained and installed. The steering stops regulate the clearance between the
16.5 tires and the front bolster assembly.
38" BOLSTER STAKES
For those applications where narrower bolster brackets are required, four brackets that bolt
onto the existing bolster bracket with (16) 3/8" x 1" bolts and locknuts are offered.
SURGE BRAKES
For those applications where brakes are needed, surge brakes on 14TT-8, 15T-8, 17T and
18TT-8 are offered.
OPTIONAL FEATURES & ACCESSORIES
SAFETY CHAIN (Part Number 12.00040) Can be obtained from your dealer.
If running gear is going to be transported on a public highway, a safety chain must
be obtained and installed. Always follow state and local regulations regarding a
safety chain and auxiliary lighting when towing farm equipment on a public high-
way. Be sure to check with local law enforcement agencies for your own particular
regulations. Only a safety chain (not an elastic or nylon/plastic tow strap) should
be used to retain the connection between the towing and towed machines in the
event of separation of the primary attaching system.

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OPTIONAL FEATURES & ACCESSORIES (continued)
WHEELS & TIRES
WARNING
Always order and install tires and wheels with appropriate capacity to meet or exceed
the anticipated weight to be placed on the running gear.
CAUTION
Tire mounting, repair and replacements should only be attempted by a qualified tire
manufacturer's representative or by properly trained personnel following the tire
manufacturer's instruction. If you do not have such instructions, contact your tire dealer
or our Company.
WARNING
Inflating or servicing tires can be dangerous. Whenever possible, trained personnel
should be called to service and/or mount tires. In any event, to avoid possible fatal or
serious injury, follow the safety precautions below:
Be sure the rim is free of rust. Lubricate both the tire beads and rim flanges with a
soap solution. Do not use oil or grease. Use a clip-on tire chuck with remote hose
and gauge that allows you to stand clear of the tire while inflating it.
Never inflate beyond 35 psi to seat the beads. If the beads have not seated by the
time the pressure reaches 35 psi, deflate the assembly, reposition the tire on the
rim, relubricate both the tire and rim and reinflate it. Inflation pressure beyond 35psi
with unseated beads may break the bead or rim with explosive force sufficient to
cause fatal or serious injury. After seating the beads, adjust the inflation pressure to
the recommended operating pressure listed. Do not weld, braze or otherwise
attempt to repair and use a damaged rim.

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