Great Plains UT5052 Operator Manual
Operator’s Manual
Ultra-Till (Disc & Coulter)
Series I UT3030, UT5036,
UT5042, UT5048 & UT5052
Read the operator’s manual entirely. When you see this symbol, the subsequent
!
instructions and warnings are serious - follow without exception. Your life and the
lives of others depend on it
Cover illustration may show optional equipment not supplied with standard unit.
©Copyright 2009 Printed 2/18/2009 576-026M
Great Plains Mfg., Inc. Table of Contents
Table of Contents
Important Safety Information ..........................1
Safety Rules...................................................6
Safety Decals ................................................7
Introduction ........................................................12
Description of Unit........................................12
Using this Manual ........................................12
Definitions..............................................12
Owner Assistance..........................................12
Assembly and Setup Assistance....................13
Product Support .....................................13
Pre-Assembly Checklist ........................13
Section 1 Assembly .............................................14
Center Frame, Torque Tube & Walking
Beam Assembly .......................................14
Inside Wing and Wheel Arm Assembly .......15
Brace Bar, Wing Brace & Rocker/Fold
Bracket Assembly ....................................16
Outside Wing Assembly ...............................17
Connecting Outside Wing and Wing Brace
Assembly .................................................18
Center Gang & Gang Hanger Assembly.......19
Center Truss, Hitch and Strut Assembly ......20
Self Level and Rest Pads Assembly .............21
Fold Cylinders, Rocker Arm and 3” Rollers
Assembly .................................................22
Center Wing Stop and Outside Wing Stop
Assembly .................................................23
Front Gauge Wheel Assembly .....................24
Hydraulic Gauge Wheel Assembly ..............25
Completing Setup .........................................26
Section 2 Hydraulics ..........................................28
3030 Hydraulic Down Pressure
Preparation and Setup ..............................28
5-Section Hydraulic Down Pressure
Preparation and Setup ..............................29
©
Copyright 2004 All rights Reserved
Great Plains Manufacturing, Inc. provides this publication “as is” without warranty of any kind, either expressed or implied. While every precaution has been taken in the
preparation of this manual, Great Plains Manufacturing, Inc. assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from
the use of the information contained herein. Great Plains Manufacturing, Inc. reserves the right to revise and improve its products as it sees fit. This publication describes
the state of this product at the time of its publication, and may not reflect the product in the future.
The following are trademarks of Great Plains Mfg., Inc.: Application Systems, Ausherman, Land Pride, Great Plains
All other brands and product names are trademarks or registered trademarks of their respective holders.
Great Plains Manufacturing, Incorporated Trademarks
Printed in the United States of America.
Section 3 Layouts ............................................... 30
UT3030D Machine Layout, Disc..................30
UT5036D Machine Layout, Disc..................32
UT5042D Machine Layout, Disc..................34
UT5052D Machine Layout, Disc..................37
UT3030C Machine Layout, Coulter
(S/N A1095A-).........................................40
UT5036C Machine Layout, Coulter
(S/N A1095A-).........................................42
UT5042C Machine Layout, Coulter
(S/N A1095A-).........................................44
UT5052C Machine Layout, Coulter
(S/N A1095A-).........................................47
UT3030C Machine Layout, Coulter
(S/N A1096A+)........................................50
UT5036C Machine Layout, Coulter
(S/N A1096A+)........................................52
UT5042C Machine Layout, Coulter
(S/N A1096A+)........................................54
UT5052C Machine Layout, Coulter
(S/N A1096A+)........................................57
Disc Gang Identification .............................. 60
Coulter Gang Identification .......................... 62
Section 4 Operating and Maintenance.............. 64
Adjustments Before Going to the Field .......64
Field Adjustments & General
Operating Instructions .................................. 65
Maintenance and Lubrication ....................... 66
Section 5 Specification and Capacities ............. 67
Appendix .............................................................68
Torque Values for Common Bolt Sizes ....... 68
Tire Inflation Chart ...................................... 68
Warranty ....................................................... 69
2/18/2009 Series I UT3030-UT5052 Ultra-Till 576-026M
Great Plains Mfg., Inc. Important Safety Information
Important Safety Information
Look for Safety Symbol
The SAFETY ALERT SYMBOL indicates there is
a potential hazard to personal safety involved
and extra safety precaution must be taken.
When you see this symbol, be alert and carefully
read the message that follows it. In addition to
design and configuration of equipment, hazard
control and accident prevention are dependent
upon the awareness, concern, prudence and
proper training of personnel involved in the
operation, transport, maintenance and storage of
equipment.
Be Aware of Signal Words
!
Signal words designate a degree or level of hazard seriousness.
DANGER indicates an imminently hazardous situation, which, if not avoided, will result in death
or serious injury. This signal word is limited to
the most extreme situations, typically for
machine components that, for functional
purposes, cannot be guarded.
WARNING indicates a potentially hazardous
situation, which, if not avoided, could result in
death or serious injury, and includes hazards
that are exposed when guards are removed. It
may also be used to alert against unsafe
practices.
CAUTION indicates a potentially hazardous situation, which, if not avoided, may result in minor
or moderate injury. It may also be used to alert
against unsafe practices.
!
DANGE R
!
WA RN ING
!
CAUTION
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1
Important Safety Information Great Plains Mfg., Inc.
Be Familiar with Safety Decals
• Read and understand “Safety Decals,” page
7, thoroughly.
• Read all instructions noted on the decals.
Keep Riders Off Machinery
• Riders obstruct the operator’s view. Riders
could be struck by foreign objects or thrown
from the machine.
• Never allow children to operate equipment.
• Keep all bystanders away from machine dur-
ing operation.
Shutdown and Storage
• Lower Series I Ultra-Till, put tractor in park,
turn off engine, and remove the key.
• Secure Series I Ultra-Till using blocks and
supports provided.
• Detach and store Series I Ultra-Till in an
area where children normally do not play.
Use Safety Lights and Devices
• Slow-moving tractors and towed implements
can create a hazard when driven on public
roads. They are difficult to see, especially at
night.
• Use flashing warning lights and turn signals
whenever driving on public roads.
• Use lights and devices provided with imple-
ment.
OFF
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Great Plains Mfg., Inc. Important Safety Information
Transport Machinery Safely
Maximum transport speed for implement is 20
mph. Some rough terrains require a slower
speed. Sudden braking can cause a towed load
to swerve and upset.
• Do not exceed 20 mph. Never travel at a
speed which does not allow adequate
control of steering and stopping. Reduce
speed if towed load is not equipped with
brakes.
• Comply with state and local laws.
• Do not tow an implement that, when fully
loaded, weighs more than 1.5 times the
weight of towing vehicle.
• Carry reflectors or flags to mark tractor and
implement in case of breakdown on the
road.
• Keep clear of overhead power lines and
other obstructions when transporting. Refer
to transport dimensions under
“Specifications and Capacities,” page 67.
• Do not fold or unfold the wings while the
tractor is moving.
Avoid High Pressure Fluids
Escaping fluid under pressure can penetrate the
skin, causing serious injury.
• Avoid the hazard by relieving pressure
before disconnecting hydraulic lines.
• Use a piece of paper or cardboard, NOT
BODY PARTS, to check for suspected
leaks.
• Wear protective gloves and safety glasses
or goggles when working with hydraulic
systems.
• If an accident occurs, see a doctor immedi-
ately. Any fluid injected into the skin must be
surgically removed within a few hours or
gangrene may result.
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3
Important Safety Information Great Plains Mfg., Inc.
Practice Safe Maintenance
• Understand procedure before doing work.
Use proper tools and equipment. Refer to
this manual for additional information.
• Work in a clean, dry area.
• Lower the Series I Ultra-Till, put tractor in
park, turn off engine, and remove key before
performing maintenance.
• Make sure all moving parts have stopped
and all system pressure is relieved.
• Inspect all parts. Make sure parts are in
good condition and installed properly.
• Remove buildup of grease, oil or debris.
• Remove all tools and unused parts from
Series I Ultra-Till before operation.
Prepare for Emergencies
• Be prepared if a fire starts.
• Keep a first aid kit and fire extinguisher
handy.
• Keep emergency numbers for doctor, ambu-
lance, hospital and fire department near
phone.
Wear Protective Equipment
• Wear protective clothing and equipment.
• Wear clothing and equipment appropriate for
the job. Avoid loose-fitting clothing.
• Because prolonged exposure to loud noise
can cause hearing impairment or hearing
loss, wear suitable hearing protection such
as earmuffs or earplugs.
• Because operating equipment safely
requires your full attention, avoid wearing
radio headphones while operating
machinery.
911
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Great Plains Mfg., Inc. Important Safety Information
Handle Chemicals Properly
• Agricultural chemicals can be dangerous.
Improper use can seriously injure persons,
animals, plants, soil and property.
• Read and follow chemical manufacturer’s
instructions.
• Wear protective clothing.
• Handle all chemicals with care.
• Avoid inhaling smoke from any type of
chemical fire.
• Store or dispose of unused chemicals as
specified by chemical manufacturer.
Use A Safety Chain
• Use a safety chain to help control drawn
machinery should it separate from tractor
drawbar.
• Use a chain with a strength rating equal to or
greater than the gross weight of towed
machinery.
• Attach chain to tractor drawbar support or
other specified anchor location. Allow only
enough slack in chain to permit turning.
• Replace chain if any links or end fittings are
broken, stretched or damaged.
• Do not use safety chain for towing.
Tire Safety
• Tire changing can be dangerous and should
be performed by trained personnel using
correct tools and equipment.
• When inflating tires, use a clip-on chuck and
extension hose long enough to you to stand
to one side–not in front of or over tire
assembly. Use a safety cage if available.
• When removing and installing wheels, use
wheel-handling equipment adequate for
weight involved.
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5
Important Safety Information Great Plains Mfg., Inc.
Safety Rules
• Thoroughly read and understand the
instructions in this manual before operation.
Read all instructions noted on the safety
decals.
• Be familiar with all Series I Ultra-Till
functions.
• Operate machinery from the driver’s seat
only.
• Do not leave Series I Ultra-till unattended
with tractor engine running.
• Do not transport Series I Ultra-Till
transport pins and all wing locks are
installed.
• Limit transport speed to 20 m.p.h.
• Know the transport height of your unit and be
extremely careful of overhead electrical and
telephone lines when transporting the unit.
• Know the transport width of your machine and
the width of bridges, etc… on the transport
route.
• Make sure that no one is near the machine
during field operation and folding or unfolding
of wing sections.
• Prior to removing any lift cylinders from the
machine, lower implement to the ground, shut
off the tractor and release the pressure in the
lines.
• Do not depend on cylinders to hold the weight
of machine during storage; use the transport
locks.
• Do not walk or stand on any part of the
machine. Never allow anyone to ride on the
Series I Ultra-Till.
• Use extreme care when hitching or unhitching
the machine from the tractor. In some
situations with a heavy finishing attachment,
the machine may tip backward causing the
hitch to rise rapidly.
• Never stand with feet under any part of the
machine.
until the
• Never allow anyone to walk between the
tractor and Series I Ultra-Till while machine is
in operation.
• Keep hands and feet away from turbo blades.
They are quite sharp.
• Any moving piece of equipment is potentially
dangerous. Do not operate until you are
absolutely sure the area is clear of children,
pets and irresponsible persons.
• Escaping hydraulic fluid under pressure can
have sufficient force to penetrate the skin,
causing serious injury. To prevent injury
when working with hydraulics, follow the
instructions on page 3.
• Before transporting the unit on public roads,
check to make sure the safety reflectors are
clean and visible, and not missing or
damaged. Turn on tractor warning lights
when transporting.
• Make sure all safety signs are clean, readable
and not damaged. Contact Great Plains Mfg.
for free replacements if necessary.
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6
Great Plains Mfg., Inc. Important Safety Information
Safety Decals
Your implement comes equipped with all safety
decals in place. They were designed to help you
safely operate your implement.
• Read and follow decal directions.
• Keep all safety decals clean and legible.
• Replace all damaged or missing decals. Order
new decals from your Great Plains dealer.
Refer to this section for proper placement.
• When ordering new parts or components, also
request corresponding safety decals.
• To install new decals:
1. Clean the area on which the decal is to be
placed.
2. Peel backing from decal. Press firmly on
surface, being careful not to cause air
bubbles under decal.
Slow Moving Vehicle Emblem
Quantity 1
Reflector – Amber
838-615C
Quantity 8: Two on light bracket, two on
center frame and two on center brace bar.
Two on rear of finishing attachment (not
shown), visible from side while folded for
transport.
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Important Safety Information Great Plains Mfg., Inc.
Reflector – Red
838-614C
Quantity 2:
Reflector – Florescent Orange
838-603C
Quantity 2:
Caution
838-598C
Quantity 1
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Great Plains Mfg., Inc. Important Safety Information
Danger Electrocution Hazard
838-599C
Quantity 1
Danger Crushing Hazard
838-600C
Quantity 1
Warning Overhead Wing Hazard
838-602C
Quantity 4: UT3030
Quantity 6: UT5036, 5042, 5048 & 5052
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Important Safety Information Great Plains Mfg., Inc.
Warning High Pressure Fluid Hazard
838-094C
Quantity 1
Warning Crushing Hazard
838-611C
Quantity 1
Series I UT3030-UT5052 Ultra-Till 576-026M 2/18/2009
10
Great Plains Mfg., Inc. Important Safety Information
Warning Wing Falling Hazard
838-612C
Quantity 2
Notice
838-613C
Quantity 1
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11
Introduction Great Plains Mfg., Inc.
Introduction
Great Plains welcomes you to its growing family of
new product owners. This implement has been
designed with care and built by skilled workers
using quality materials. Proper assembly,
maintenance and safe operation will help you get
years of satisfactory machine use from your
machine. To ease the assembly task and produce
a properly working machine, read this entire
manual before assembling or setting up new
equipment.
Description of Unit
The Series I 3030-5052Ultra-Till is a three or fivesection seedbed preparation tillage tool. Working
width ranges from 30 to 52 feet. The implement is
designed to combine discing/slicing, with shallow
harrowing in a vertical tillage field operation to
smooth, level and incorporate chemicals in a
single pre-plant pass.
Using This Manual
This manual will familiarize you with safety,
assembly, operation, adjustment, troubleshooting
and maintenance. Read this manual and follow
the recommendations to help ensure safe and
efficient operation.
The information in this manual is current at printing. Some parts may change to assure top
performance.
Definitions
The following terms are used throughout this
manual.
Your machine’s parts should only be replaced with
Great Plains parts. Always use the serial and
model number when ordering parts from your
Great Plains dealer. The serial-number and
patent plates are located on the center section of
the implement on the front frame tube as shown in
Figure A.
Figure A
Serial Number & Patent Plate
Record your implement model and serial numbers
here for quick reference.
Model Number: __________________________
Serial Number: ___________________________
Your Great Plains dealer wants you to be satisfied
with your new machine. If you do not understand
any part of this manual or are not satisfied with
the service received, please take the following
actions:
Right and left as used in this manual are determined by facing the direction the machine will
travel while in use unless otherwise stated.
IMPORTANT: A crucial point of information about
the preceding topic. For safe and correct operation,
read and follow the directions provided before
continuing.
NOTE: Useful information about the preceding topic.
Owner Assistance
If customer service or repairs are needed, contact
your Great Plains dealer. They have trained
personnel, parts and service equipment specially
designed for Great Plains products.
Series I UT3030-UT5052Ultra-Till 576-026M 2/18/2009
1. Discuss the matter with your dealer’s service
manager. Make sure they are aware of any
problems so they can assist you.
2. If you are still not satisfied, seek out the
dealership owner or general manager.
3. For further assistance, write to:
Product Support
Great Plains Mfg. Inc., Service Department
PO Box 5060
Salina, KS 67402-5060
gp_web_cs@greatplainsmfg.com
(800)255-9215
12
Great Plains Mfg., Inc. Introduction
Assembly and Setup Assistance
To order additional copies of operator’s and parts
manuals, write to the following address. Include
model numbers in all correspondence.
If you do not understand any part of this manual
or have other assembly or setup questions, assistance is available. Contact
Product Support
Great Plains Mfg. Inc., Service Department
PO Box 5060
Salina, KS 67402-5660
Pre-Assembly Checklist
• Before assembling, read and understand “Im-
portant Safety Information,” beginning on
page 1.
• Have at least two people on hand while as-
sembling.
• Make sure assembly area is level and free of
obstructions (preferably an open concrete area).
• Have all major components.
• Have all fasteners and pins shipped with
Series I Ultra-Till.
• IMPORTANT: If a pre-assembled part or fas-
tener is temporarily removed, remember
where it goes. Keep the parts separated.
• Have a copy of the parts manual on hand. If
unsure of proper placement or use of any part
or fastener, refer to the parts manual.
• Check that all working parts are moving free-
ly, bolts are tight, and cotter pins are spread.
2/18/2009 Series I UT3030-UT5052Ultra-Till 576-026M
13
Section 1: Assembly Great Plains Mfg., Inc.
Assembly
This section covers the proper assembly of the implement. The reference numbers on the
figures give you an indication of the order of assembly. For a complete breakdown of any part not
shown in this assembly section, refer to the parts manual for proper location. Refer to the Appendix
for proper bolt torque values.
Center Frame, Torque Tube & Walking Beam Assembly
After uncrating the machine, place the
center frame (1) Figure 1, in the center of your
work area on stands. Pin the torque tube (2) to
the center frame with the 1 1/4 x 6 pins (3) and
1 1/4 x 7 pin (4) in center. Secure them with
3/8 x 2 1/4 Gr.8 hex bolts (5) & top lock nuts.
Slide the pivot spindle of the walking
beam assembly (6) into the sleeve at the end of
the torque tube wheel arm. It is a good idea to
put some form of anti-seize on the spindle
before you insert it. Line up the hole in the
spindle with the hole in the sleeve and secure
with 5/16 x 4 or 5/16 x 4 1/2 hex bolt (7) with
lock washer and hex nut.
When both walking beams have been
installed, bolt on the center transport tires (8),
using 5/8” lug nuts (9). See parts manual for
proper transport parts and sizes for your
machine model.
Figure 1
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Great Plains Mfg., Inc. Section 1: Assembly
Inside Wing and Wheel Arm Assembly
Bolt the inside wing frames (1) Figure
2, to the center frame with three 1 x 6 hex bolts
(2) with nylon lock nuts (3). Draw the nuts
down tight but do not torque
Once the wings are attached, insert the
wheel arm bracket (4) into the wing frame
hangers and secure it just as you did on the
center with 1¼ x 6 pins (5). Secure the pins
with 3/8 x 2 1/4 Gr.8 hex bolts (6) & top lock
nuts.
.
(7) as shown in Figure 2 with the short 15
spindle toward the front. Use anti-seize
material on spindle. Secure the pivot spindle in
the sleeve with the 5/16 x 3 clevis pin (8) and
1/8 x 1 cotter.
with the 9/16” lug nuts (10).
Install the wing walking beam assembly
Bolt the 11L x 15, 8-ply tire (9) in place
Figure 2
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Section 1: Assembly Great Plains Mfg., Inc.
Brace Bar, Wing Brace & Rocker/Fold Bracket Assembly
Install the 1 1/4 x 9 1/2 eye bolt (1)
Figure 3, in the mounting bracket of the wing
with a 1 1/4 ” jam nut on each side of the
bracket. Install the wing lift cylinders (2)
between the eyebolt and the lever on the wheel
bracket and the master lift cylinder (3) on the
center frame (see hydraulics in parts manual for
sizes). Secure the cylinders with 1 x 3 clevis
pins, 1” machine washer and 3/16 x 2 cotter
pin.
Bolt the center brace bar (4) and wing
brace bars (6) to the front of the center frame
and wing frame with 3/4 x 2 hex bolts (5) with
lock washers and hex nuts. Do not tighten
bolts. Use a 1 x 6 hex bolt (7) and nylon lock
nut in the hinge. Draw nut tight but do not
torque. Tighten all other bolts evenly to
prevent bind at hinge.
Bolt the center fold bracket(s) (8) to the
center frame with eight 3/4 x 2 hex bolts (9)
with lock washer and hex nuts.
rocker/fold bracket(s) (10) to the wings using
two 3/4 x 3 hex bolts (11) with lock washers
and hex nuts, along with 5/8 x 3 x 5 1/2 u-bolts
(12) with lock washer and hex nuts. The front
bracket uses a 3/4 x 5 bolt (13) to attach the
outer end. The rear bracket uses four 5/8 x 1
1/2 bolts (14) with lock washers and hex nuts to
attach the outer end. On coulter models, bolt
the inside hinge (15) to the wing brace using
5/8 x 3 x 5 1/2 u-bolts (16) and 3/4 x 2 bolts
(17) with lock washers and hex nuts. On disc
models shown, bolt the inside hinge (18) using
5/8 x 1 1/2 hex bolts (19) and 5/8 x 3 x 5 1/2 ubolts (20) with lock washer and hex nuts.
to the wing with 3/4 x 3 hex bolts (22) and 5/8
x 3 x 5 1/2 u-bolts (23) with lock washers and
hex nuts.
On 5-section models, bolt the
On UT3030, attach the fold bracket (21)
Figure 3
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Great Plains Mfg., Inc. Section 1: Assembly
Outside Wing Assembly
On 5-section models, preassemble the
outside wing (1) by attaching the outside hinges
(2) and (3) to the wing with 1 x 6 hex bolt (4)
and 5/8 x 3 x 5 1/2 u-bolts (5) as shown in
Figure 4 (Note: hinges (2) and (3) are
different from each other). Use a nylon lock
nut on the 1 x 6 hex bolt (4) with lock washers
and hex nuts on the u-bolts (5). Attach the Fold
H-Bracket (6), bulge side in and up, to the front
hinge with the 1 x 7 Gr.8 special thread hex
bolt (8). Attach the two Rocker (7) to the rear
hinge, bulge side out and up, with the same 1 x
7 Gr.8 special thread hex bolt (8). Use 1” nylon
lock nuts on these bolts.
as we did the inside ones, using the 1 1/4 x 6
pins (10) and 3/8 x 2 1/4 Gr.8 hex bolts (11) &
lock nuts. Slide the walking beam assembly
(12) into the wheel bracket sleeve as shown in
Figure 4. Again, it is recommended to use
some form of anti-seize product on the spindle.
Secure with 5/16 x 3 clevis pin (13) and 1/8 x
1” cotter pin. Note that the shorter 15” long
spindle assembly goes to the front. Bolt on the
11L x 15 tire and wheels (14) with the 9/16”
lug nuts (15).
and a 16” Hub & Spindle assembly (16) as
shown in insert.
Attach the outside wheel bracket (9) just
Model UT5036 uses one 11L x 15 tire
Figure 4
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Section 1: Assembly Great Plains Mfg., Inc.
Connecting Outside Wing and Wing Brace Assembly
On models UT5042, UT5048 &
UT5052, bolt the auxiliary fold bracket (1) to
the inside wing brace with two 5/8 x 3 x 5 1/2
u-bolts (2) and four 5/8 x 1 1/2 hex bolts (3)
using lock washers and hex nuts, see Figure 5.
Bolt the outside wing fold hinges (4) and (5) as
shown, (Note: Hinges (4) and (5) are not the
same) to the outside wing brace (6) with 1 x
5½ hex bolts (7) and 5/8 x 3 x 5 1/2 u-bolts (8)
using lock washers and hex nuts.
On all 5-section models, bolt the outside
wing brace (6) to the plates on the outside wing
(9) with 3/4 x 2 hex bolts (13), with lock
washers and hex nuts. Bolt and pin the outside
wing assembly to the inside wing frame with 1
x 7 GR 8 hex bolts (10), with rollers and flat
washers and 1 x 6 Gr.8 hex bolt (11) and 1 x 5
hardened pin (12). Securing bolts with 1” nylon
lock nuts and the 1 x 5 pin (12) with 3/8 x 2 1/4
GR 8 hex bolt and lock nut.
On models UT5042, UT5048 &
UT5052, bolt the two rockers (14) (as shown)
to the wing fold hinge (5) with 1 x 7 Gr.8
special thread hex bolt (15). Secure with Nylon
lock nut.
Attach the outside rephasing lift
cylinder (16) (See hydraulics in parts manual
for proper cylinder sizes) between the lever on
the wheel bracket and the 1 1/4 x 9 1/2 eye bolt
(17) in the wing bracket. Use 1 x 3½ clevis
pins (18) with 1” machine washer and 3/16 x 2
cotter pins and 1 1/4 ” jam nuts on the eye-bolt.
Figure 5
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Great Plains Mfg., Inc. Section 1: Assembly
Center Gang & Gang Hanger Assembly
At this time it is best to hang the center
gangs and center gang hanger tubes before you
install the hitch and hitch strut assembly.
U-bolt the center gang hanger tube(s)
(1) to the center brace bar with 5/8 x 4 x 4 1/4
u-bolts (2), with lock washers and hex nuts, See
Figure 6. Line up the levers on the hanger tubes
with the ratchet jack/cylinder mounts on the
brace bar. Pin the preassembled center gangs
(3) & (4) to the center frame with the 1 x 5 1/2
pins (5) see Section 3 Machine Layout for
proper gang sizes. Secure with 3/8 x 2 1/4 GR 8
hex bolts and lock nuts. Slide the spring
washer (7) & spring (8) on to the gang spring
bolt (6) as shown and slide it up into the cast
swivel on the gang hanger tubes. Place a 1”
flat washer on the spring bolt and thread the 1”
hex nut and 1” jam nut onto the spring bolt (6).
Pin the other end to the gang with 3/4 x 2 1/2
clevis pins (9), secure with 1/8 x 1 1/2 cotters.
Finally tighten down the nuts on the spring bolt
until the spring has a preload length of 8 3/4”.
Figure 6
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Section 1: Assembly Great Plains Mfg., Inc.
Center Truss, Hitch and Strut Assembly
Bolt the center frame truss (1) Figure 7,
to the top side of the center frame and brace
bar. Use 3/4 x 2 bolts (3) on the front plates
and 5/8 x 1 1/2 bolts (2) on the rear two plates.
Use lock washers and hex nuts on all of these
bolts. On 5-section models, bolt the truss cross
bar (4) with the truss legs (5) through the truss
frame (1) with the 3/4 x 6 bolt (6), lock washers
and hex nuts. Use two 3/4 x 2 hex bolts (7)
with lock washers and hex nuts, at the base of
the truss legs.
Slide the back of the hitch (8) between
the plates at the front of the brace bar as shown.
Use two 1 1/4 x 7 Gr. 8 bolts (9) and 1 1/4 lock
washers and hex nuts to secure the hitch.
Mount the tongue jack (10) to the front of the
hitch to support it.
Use 1 x 5 1/2 bolts (12) to attach the
hitch strut (11) between the front of the truss
and the hitch. Use lock washers and hex nuts
on these bolts.
Slide the hose support (13) rod into the
tube at the front of the hitch and secure it with a
1/8 x 1 1/2 cotter pin. For hydraulic valve
mounting bracket placement, see hydraulics in
parts manual, for bolts and hardware.
Figure 7
Series I UT3030-UT5052 Ultra-Till 576-026M 10/28/2004
4/11/2005
20
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