Great Plains 6328 Operator Manual

Operator’s Manual

Series VII 6113, 6116, 6318,

6320, 6323, 6325 & 6328

Field Cultivator, Floating Hitch

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.

00324

Cover illustration may show optional equipment not supplied with standard unit.

©Copyright 2009 Printed 1/16/2009 560-204M

Great Plains Mfg., Inc. First Page ► 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 Torque Tube & Walking Beam

Assembly ...................................................... 14

6113 & 6116 Wing Frame Assembly ...........15

6318-6328 Inside Wing and Wheel Arm

Assembly .................................................16

Brace Bar and Wing Brace Assembly ..........17

Wing Fold Bracket Assembly ......................17

Level Bar Assembly .....................................18

Caster Wheel Linkage & Hitch Pole

Assembly .................................................19

Center Lift Cylinder, Rest Pads and

Hydraulic Valves Assembly ....................20

Fold Cylinders and Rocker Arm Assembly .21

Center Wing Stop Assembly ........................22

Completing Setup .........................................23

© Copyright 2003 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 2 Hydraulics ..........................................24

Typical Lift Hose Layout ............................. 24

Typical Fold Hose Layout ............................ 25

Section 3 Shank Placement ............................... 26

6113 Shank Layout, Floating Hitch ............. 26

6116 Shank Layout, Floating Hitch ............. 27

6318 Shank Layout, Floating Hitch ............. 28

6320 Shank Layout, Floating Hitch ............. 29

6323 Shank Layout, Floating Hitch ............. 30

6325 Shank Layout, Floating Hitch ............. 31

6328 Shank Layout, Floating Hitch ............. 32

Section 4 Operating and Maintenance

Instructions .........................................................33

Prior To Going To The Field ....................... 33

General Operating Instructions and

In-Field Adjustments .................................... 34

Maintenance and Lubrication ....................... 36

Section 5 Specification and Capacities ............. 37

Appendix .............................................................38

Torque Values for Common Bolt Sizes ....... 38

Tire Inflation Chart ...................................... 38

Warranty ....................................................... 39

1/16/2009 Series VII 6113-6328 Field Cultivator, Floating Hitch 560-204M

Great Plains Mfg., Inc. Table of Contents ► 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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Important Safety Information Table of Contents ► 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 VII Field Cultivator, put tractor
in park, turn off engine, and remove the key.

• Secure Series VII Field Cultivator using
blocks and supports provided.

• Detach and store Series VII Field Cultivator
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. Table of Contents ► 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 37.

• 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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Important Safety Information Table of Contents ► 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 VII Field Cultivator, 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 VII Field Cultivator 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. Table of Contents ► 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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Important Safety Information Table of Contents ► 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 VII Field Cultivator
functions.

• Operate machinery from the driver’s seat
only.

• Do not leave Series VII Field Cultivator unat-
tended with tractor engine running.

• Do not transport the field cultivator until
the transport position and 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
field cultivator.

• 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.

• Never allow anyone to walk between the
tractor and field cultivator while machine is in
operation.

• Keep hands and feet away from cultivator
sweeps. 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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Great Plains Mfg., Inc. Table of Contents ► 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 Table of Contents ► 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. Table of Contents ► 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: 6318, 6320, 6323, 6325 & 6328

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9

Important Safety Information Table of Contents ► Great Plains Mfg., Inc.

Warning High Pressure Fluid Hazard
838-610C
Quantity 1

Warning Crushing Hazard
838-611C
Quantity 1

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Great Plains Mfg., Inc. Table of Contents ► Important Safety Information

Warning Wing Falling Hazard
838-612C
Quantity 2: 6318, 6320, 6323, 6325 & 6328

Notice
838-613C
Quantity 1

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11

Introduction Table of Contents ► 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 VII 6113, 6116, 6318, 6320, 6323,
6325 & 6328 Field Cultivator is a 1 or 3-section
seedbed preparation tillage tool. Working width is
13’ 7” to 27’ 9”. The implement is designed for
secondary field operations to smooth, level,
eliminate weeds and incorporate chemicals.
Various finishing attachments are available to
further smooth, redistribute residue, firm soil and
break clods.

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.
Right and left as used in this manual are deter-

mined 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.

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 plate (if provided) 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:

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

[e-mail]

(800)-255-9215

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Great Plains Mfg., Inc. Table of Contents ► 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 67402-5060

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 VII Field Cultivator.

• 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.

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Section 1: Assembly Table of Contents ► 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 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), secure them with the 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 3 clevis pin (7) with 5/32 x 1 1/2
cotter pin.

When both walking beams have been
installed, bolt on the 9.5L x 15, 8 ply tires (8)
with the 1/2 x 1 1/4” lug bolts (9).

Bolt the 4 x 4 K-Flex Stubs (10) onto
the center frame with two 1/2 x 5 1/2 hex bolts
(11) with lock washers and hex nuts. See
Section 4 for placement dimension.

Figure 1

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14

Great Plains Mfg., Inc. Table of Contents ► Section 1: Assembly

6113 & 6116 Wing Frame Assembly

Bolt the wing frame (1), Figure 2, to
the center frame with two 1 x 6 hex bolts (2)
with nylon lock nuts. Install the 5/8 x 3 x 5
1/2 u-bolts (3) to secure the wing frame rigid.
Use lock washers and hex nuts. On model

6116, bolt the 11” bolt on stub (4) and the 5”
bolt on stub (5) to the wing frame using 5/8 x
1 1/2 hex bolts (6), using lock washers and
hex nuts.

Figure 2

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15

Section 1: Assembly Table of Contents ► Great Plains Mfg., Inc..

6318–6328 Inside Wing and Wheel Arm Assembly

Bolt the inside wing frames (1) Figure
3, to the center frame with two 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 1 1/4 x 6 pins (5). Secure the 1 1/4
x 6 pins with the 3/8 x 2 1/4 Gr. 8 hex bolts (6)
& top lock nuts.

Install the wing walking beam assembly
(7) as shown in Figure 3 with the long 14”

spindle toward the front. On models 6318 &
6320, install 14” hub & spindle assembly (11)
as shown in insert. Use anti-seize material on
spindle. Secure the spindle in the sleeve with
the 5/16 x 3 clevis pin (8) and 1/8 x 1 cotter.

Bolt the 9.5L x 15, 8-ply tire(s) (9) in
place with the 1/2 x 1 1/4 lug bolts (10). On
models 6320 & 6325, bolt the 11” bolt on stub
(12) and the 5” bolt on stub (13) to the wing
frame using 5/8 x 1 1/2 hex bolts (14), using
lock washers and hex nuts

Figure 3

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Great Plains Mfg., Inc. Table of Contents ► Section 1: Assembly

Brace Bar and Wing Brace Assembly

Install the 1 x 7 1/2 eye bolt (1) Figure
4, in the mounting bracket at the back of the
wing with a 1” jam nut on each side of the
bracket. Install the rephasing wing cylinder (2)
between the eyebolt and the lever on the wheel
bracket (see parts manual for cylinder size).
Secure the cylinder with 1” clevis pins, 1”
machine washers and 3/16 x 2 cotter pins.

Bolt the center brace bar (3) to the front
of the center frame with 3/4 x 2 hex bolts (4)
with lock washers and hex nuts. Do not tighten
bolts. Bolt the wing brace (5) to the front of the

wing with 3/4 x 2 hex bolts (4) with lock
washers and hex nuts. Use a 1 x 6 hex bolt (6)
and nylon lock nut in the hinge. Draw nut tight
but do not torque
tube (7) between the center frame and the brace
bar. Attach with 5/8 x 4 x 4 1/2 u-bolts (10) and
3/4 x 2 hex bolts (11), lock washers and nuts.
Insert the leveling link tubes (8 & 9) and attach
with u-bolts (10) as before. Tightening all u­bolts and brace bar bolts evenly to prevent
binding at hinge.

. Insert the cylinder mounting

Wing Fold Bracket Assembly

On models 6318-6328 , bolt the rocker
bracket (12), Figure 4, to the front bar of the
wing using two 3/4 x 3 hex bolts (13) with lock
washers and hex nuts. On model 6328, attach
the connecting link (14) to the rocker bracket
(12) with 1 x 3 hex bolts (15) and 1” lock nuts.

U-bolt the tie strap bracket (16) to the wing
frame using two 1/2 x 3 x 5 u-bolts (17) with
lock washer and hex nuts. Bolt the 7” offset
stub (18) to the wing frame as shown with two
5/8 x 4 x 4 1/4 u-bolts (19) with lock washers
and hex nuts.

Figure 4

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4/16/2008

17

Section 1: Assembly Table of Contents ► Great Plains Mfg., Inc..

Level Bar Assembly

Slide the H-bracket (1) down over the
cylinder mount tube as shown in Figure 5. Bolt
in place with a 3/4 x 6 bolt (2) and lock nut.
Draw this nut up but do not torque
must pivot.

Connect the level bar (3) to the torque
tube using two 1 x 3 3/8 usable headed pins (4),
1” flat washers, 1” machine washers and 3/16 x
2 cotter pins. Install the 1 x 9 Gr. 8 bolt (5)
through the level bars and H-bracket. Draw up
snug with a 1” lock nut (do not torque

Slide the leveling links (6) over the
leveling link mounting tubes as shown. Bolt in
place with 1 x 6 special thread hex bolts Gr. 8
(7), securing with nylon lock nuts. Do not

, as this part

).

torque, as this part must pivot freely. Connect
the caster wheel level bars (8) to the level bar
(3) using two 1 x 4 1/2 usable headed pins (9),
1” machine washers and 3/16 x 2 cotter pins.

Bolt the caster wheel level bar (8) to the
turnbuckle assembly (10) through the leveling
link (6) as shown. Use the 1 x 6 special thread
hex bolt (7) and nylon lock nut. Do not torgue
as before.

Attach the rebound valve mounting
bracket (11) and valve mounting bracket plate
(12) with four 1/2 x 4 1/2 bolts (13) using lock
washers and hex nuts. Insert the 3/4 x 3
transport pin w/keeper (14) in holder.

Figure 5

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4/16/2008

18

Great Plains Mfg., Inc. Table of Contents ► Section 1: Assembly

Caster Wheel Linkage & Hitch Pole Assembly

Bolt the center fold bracket (1) to the
center frame as shown in Figure 6. Use 3/4 x 2
1/2 hex bolts (2) with lock washers & hex nuts.
Bolt the center frame truss (3) to the center
frame using 5/8 x 1 1/2 hex bolts (4), lock
washers and hex nuts, and 3/4 x 2 hex bolts (5)
with lock washers and hex nuts.

U-bolt the gauge wheel arm mount (6)
to the center brace bar with three 3/4 x 3 x 5 1/2
u-bolts (7). Insert the left & right bottom center
gauge wheel arms (8 & 9) and secure with 1 x 5
1/2 special hex bolts (11) and nylon lock nuts,
do not torque.

Attach the top gauge wheel arms (10)
with the same 1 x 5 1/2 special hex bolt and

nylon lock nut, do not torque. Connect the
turnbuckle to the bottom arms with a 1 x 2 3/4
clevis pin (12), machine washer and 3/16 x 2
cotter pin. See Caster Wheel Assembly,
Section 3, Transport in parts manual, for caster
wheel exploded diagram.

Bolt the hitch pole (13) to the brace bar

with two 1 1/4 x 7 Gr. 8 hex bolts (14), secure
with 1 1/4 lock nuts but do not torque. Insert
the tongue jack (15) on the hitch pole jack tube.
Bolt the hitch clevis (16) to the hitch pole with
1 1/2 x 11 safety chain bolt (17), machine
washers, slotted hex nut and 1/4 x 3 cotter pin.
Attach hose holder (18) with 1/8 x 1 1/2 cotter
pin.

Figure 6

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4/16/2008

19

Section 1: Assembly Table of Contents ► Great Plains Mfg., Inc..

Center Lift Cylinder, Rest Pads and Hydraulic Valves Assembly

Connect the master lift cylinder (1) to
the center frame as in Figure 7. Connect the
rod end to the lug on the Level Bar with the 1
x 9, Gr.8 hex bolt (3) and lock nut . Place a 1”
flat washer on each side of the lug to keep the
hardened bushings from coming out.

Secure the base of the cylinder with 1 x
3 1/2” clevis pin (2), 1” machine washer and
3/16 x 2 cotter pin. Mount the rebound valve
(4) as shown with the V1 port to the front and
top using two 5/16 x 4 hex bolts (5) with lock
washers and hex nuts.

Install the depth stop mounting bracket
(6) to the center brace bar using two 5/8 x 3 x

5 1/2 u-bolts (7), lock washers and hex nuts.
Bolt the depth stop valve (8) on top of the
bracket using the 5/16 x 2 hex bolts (9) with
lock washers. Insert the depth stop tube (10)
into the mounting bracket (6) and attach to the
level bar with 1/2 flat washer and 1/8 x 1
cotter pin. Slide depth stop control assembly
(11) onto depth stop tube and insert a 3/8 x 2
hex bolt (12) with 3/8 lock nut to capture the
assembly.

U-bolt the 3” cylinder rest pads (14) on
the center bar as shown, using a 1/2 x 3 x 5 u­bolt (13) with lock washers and hex nuts (see
shank layout drawing for exact placement).

Figure 7

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Great Plains Mfg., Inc. Table of Contents ► Section 1: Assembly

Fold Cylinders and Rocker Arm Assembly

Connect the center fold cylinders (1) to
the center fold bracket as shown in Figure 8.
Use the 1” x 3 1/2 clevis pin (2) with 1”
machine washer and 3/16 x 2 cotter pin.
Attach the rocker (3) to rocker bracket with 1 x
3 3/8 usable Clevis Pin (4) using 1” machine
washer and 3/16 x 2 cotter. Do Not Connect

Rod End Of Cylinders To Rockers Before
They Are Charged With Oil.

the cylinders, as shown, so they clear the
rockers in the extended position. You are now
ready to connect the hydraulic hoses to the
cylinders and charge the fold system (see
hydraulic layout, section 2).

charged and free of air, connect them to the
rockers.

Place a support block of wood under

Once the fold cylinders are fully

Figure 8

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Section 1: Assembly Table of Contents ► Great Plains Mfg., Inc..

Center Wing Stop Assembly

U-bolt the center wing stop (1) to the
second bar from the rear on the center frame as
shown in Figure 9. Use 1/2 x 3 x 5 u-bolts (2)
with lock washers and hex nuts. Center the

wing stop from side to side. Insert the 1/2 x 4
1/2 transport lock quick pins (3) in the holders
on the wing stop..

Figure 9

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Great Plains Mfg., Inc. Table of Contents ► Section 1: Assembly

Completing Setup

Install the plastic end caps into the

open ends of all the 4x3 frame tubes

You should now be ready to add
shanks to the machine and then if the machine
has a finishing attachment you would install it
following the shanks. See the shank layout
section 3 for proper shank locations for your
unit. Section 5 of the parts manual shows the
individual shank assemblies and parts for both
the K-flex and magnum shanks.

Once the shanks are installed and all of
the hydraulic procedures have been completed,
you may fold the machine to check for
clearance and proper shank placement. Slowly
fold the machine while watching that hoses do
not become pinched or kinked and watch that
shanks clear all obstructions.

begin to unfold slowly. Be Sure No One Is

Under The Wings When You Unfold The
Machine. Once the machine is unfolded, add

the safety decals and the product decals. Refer
to the Important Safety Information (page 7)
for the proper placement of safety decals.

safety lights in accordance with local and state
laws. See parts manual for assembly drawings
and parts list.

complete and you are ready to add any
finishing attachment, rear hitches, etc… to the
machine. Be sure to consult the operating
instructions, Section 4, for the first time field
adjustments before going to the field for the
first time.

Once the machine is folded completely,

Install the safety chain, SMV sign &

At this point, set up of the machine is

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Section 2: Hydraulics Table of Contents ► Great Plains Mfg., Inc.

Typical Lift Hose Layout

00340

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Great Plains Mfg., Inc. Table of Contents ► Section 2: Hydraulics

Typical Fold Hose Layout

00341

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Section 3: Shank Placement Table of Contents ► Great Plains Mfg., Inc.

6113 Shank Layout, Floating Hitch

00333

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Great Plains Mfg., Inc. Table of Contents ► Section 3: Shank Placement

6116 Shank Layout, Floating Hitch

00334

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27

Section 3: Shank Placement Table of Contents ► Great Plains Mfg., Inc.

6318 Shank Layout, Floating Hitch

00335

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Great Plains Mfg., Inc. Table of Contents ► Section 3: Shank Placement

6320 Shank Layout, Floating Hitch

00336

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Section 3: Shank Placement Table of Contents ► Great Plains Mfg., Inc.

6323 Shank Layout, Floating Hitch

00337

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Great Plains Mfg., Inc. Table of Contents ► Section 3: Shank Placement

6325 Shank Layout, Floating Hitch

00338

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Section 3: Shank Placement Table of Contents ► Great Plains Mfg., Inc.

6328 Shank Layout, Floating Hitch

00339

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Great Plains Mfg., Inc. Table of Contents ► Section 4: Operating and Maintenance

Operating and Maintenance

Prior to Going to the Field

1. Both dealer and customer read and

thoroughly understand all safety
recommendations. (These are found in the
Safety Section of this operator manual.)

2. Make sure your tractor horsepower matches

the implement you are pulling. This is
important so the implement can do the best
possible job.

3. Hitch the tractor to the Field Cultivator using

the block or yoke clevis determined by the
tractor drawbar. Use the correct size pin for
clevis or block. Raise any 3-pt arms and/or

hitch attachments to its fully raised
position to clear implement.

4. For TWO-WHEEL DRIVE and MFWD

tractors, pin drawbar in fixed center position
for field and transport. For FOUR-WHEEL

DRIVE and TRAC-DRIVE tractors, leave
one hole clearance on each side of
drawbar for field position, hitch damage
may occur if pinned solid. Pin in center
position for transport to maintain
maximum steering control.

5. Clean all hydraulic couplings and connect to

tractor. Each hydraulic coupling has a colored
handle on it and is marked with a cylinder,
either extending (black) or retracting (red).

6. If machine is folded, remove the transport pins

from the wing stops. (Do not remove pins if
the wing is leaning against the pins or putting
pressure on the pins. Use the hydraulics to
pull the wings in completely before unpinning
them.) Once the pins are removed, slowly
unfold the unit. Make sure no one is under
the wings during the unfolding process.
Check again for hydraulic leaks and watch
that hoses do not get pinched in hinges, wings
stops, etc.

7. After the machine is completely unfolded,

raise and lower the Field Cultivator several
times to purge air from the hydraulic system.
Again check for hydraulic leaks and tighten or
replace if necessary.

8. Pre-leveling of machine can be done on a
concrete slab or good level surface. Lower
machine so sweeps are 1-2” off of ground on
the center frame. Adjust the turnbuckles on
the front caster wheels (Figure 1) to level it
from front to back. (Shorten to bring front
down, extend to bring front up.) Level
machine with the front row shanks just slightly
deeper or lower than the back.

Figure 1

9. Set the wings to match the depth of the
center. This is done by adjusting the lift
cylinder eyebolt on each wing (see Figure 2).
Lengthen the bolt to run shallower, shorten
the bolt to run deeper.

Figure 2

In some conditions the wings will need to be
set slightly lower than the center as the center
may tend to run deeper behind the tractor
tires.

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Section 4: Operating and Maintenance Table of Contents ► Great Plains Mfg., Inc.

10. Check safety chain hookup. Make sure all
warning lights are hooked up and functioning
correctly.

11. Check the tire pressure for proper inflation
and check the tightness of the lug bolts. Tire
pressure amounts are located on the sidewall
of each tire.

General Operation Instructions and In-Field Adjustments

1. Remove the transport pins and unfold the
machine. Make sure the fold cylinders are fully
extended to allow the wings to fully flex in the
field.

2. If possible have someone observe the machine
during first time operation for levelness—front
to rear and wings to center frame. Adjust each
as needed. For front to rear, either extend or
shorten the length of the turnbuckle on the self­leveling. Never run the machine with the back
lower (deeper) than the front. To adjust the
machine from side to side, use the eyebolt on
each wing. Adjust the inside wings first and
then the outside wings. The gauge wheels
should be set in field position to be 1/2” to 1
1/2” off the ground.

3. The ideal working speed is 6 to 7 mph.
Working too slow may cause plugging, poor
incorporation or mixing of crop residue and
reduced weed kill. Running too fast may
cause streaks in chemical incorporation and
ridging.

4. The field cultivator is designed as a secondary
tillage tool and is designed to leave a finished
seedbed following some form of fall or spring
tillage. For best results, if at all possible, run
the machine at a slight angle to the rows. This
will improve trash flow and help spread the
residue more evenly throughout the field.

5. When you have the machine set to the desired
working depth, set the depth stop slide on the
depth control bar. This is located at the front of
the machine on the brace bar. This will
maintain a constant depth each time after
raising and lowering the machine.

6. If after setting the depth stop, the detent on the
tractor kicks out before the stop contacts the

12. Check for any bolts that may need tightened
or retightened. Grease all the hinge points.
The hubs come pregreased and will not need
more grease at this time.

13. Put transport lock in place and refold the
machine slowly. Put wing stop pins in place.
Always use the transport pins when moving
from field to field. You are now ready to go to
the field.

button on the depth stop, slow the hydraulic
flow speed down. If this problem still persists,
contact the factory service representative for
other possible adjustments. Do not try to

adjust the rebound valve without first
contacting the factory service rep.

7. Adjust the drag to leave the desired results
while maintaining the trash flow through the
drag.

a.) On the spike drag, start with 5 links

hanging from the chain in drag arm bottom
slot. (This is the starting point for worst
conditions.) The cleaner the ground, the
shorter the pull chain may be pulled up.
On the spike drag, one of the links in the
first row of angles is turned over. This
allows the trash to start flowing through the
drag easier by changing the angle of the
first row of teeth. Always make sure that
the drag is never pulling off the hang
chains. If so, shorten pull chains.

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Great Plains Mfg., Inc. Table of Contents ► Section 4: Operating and Maintenance

b.) On coil tine drags, start with the top

eyebolt (12) centered. Then level drag
mainframe (4R and 4L) by changing
position of leveling bolt (21). There are
two holes in the arm and four in the
mainframe. One of these will get you
where you need to be to level. To lay the
teeth back, remove the clip pin (42) on
each end and move strap adjustment by
pushing the handle (7) forward. This strap
has 5 holes and will let you lay the teeth
back several degrees. If it is desired to set
one row, usually the first, different than the
rest as far as the angle is concerned, it can

be adjusted individually by loosening the
U-bolt and set- screw on each end of the
drag bar. Down pressure on the drag is
achieved by lengthening the eyebolt (12)
on the top bracket. Depending on the
amount of down pressure, you may need
to relevel the mainframe.

c.) If a basket is added, adjust the amount of

down pressure by either shortening the
eyebolt for less pressure or lengthening
the eyebolt for more pressure.

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Section 4: Operating and Maintenance Table of Contents ► Great Plains Mfg., Inc.

Maintenance and Lubrication

1. Always use the transport lock when working or
doing maintenance on the Field Cultivator. If
folded, be sure your wing stop pins are in
place. Read and understand all safety decals
on your equipment.

2. During the first season of operation, and
periodically after that, check your bolts for
tightness. Check shank pivot bolts on the
spring-loaded shank; these must remain tight
to prevent excessive wear on the shank
assembly.

3. Check wheel bearings occasionally for
excessive endplay.

4. Replace or rotate worn parts as needed—
bearings, sweeps, shanks, etc...

5. Check and tighten or replace any hydraulic
leaks. Check hoses for any leaks. It is
important that there are no leaks on the
equipment that may change the depth when in
field position.

6. Grease gang bearings and wheel bearings
sparingly. Over greasing may cause damage
to seals and reduce the life of the bearing.
Grease hinge points periodically.

Wheel Bearings

Grease every 50 hours (sparingly) and
check for endplay.

Walking Beam Pivot Bearings

Grease every 100 hours and check for
endplay

All Hinge Points

Grease every 10 hours.

7. If machine is stored outdoors over the winter

8. Check drag bolts and parts for looseness or

By following and maintaining a routine service and
lubrication program, your tillage equipment will give
you many years of service.

For more information on operating, adjusting
or maintaining your Great Plains Field
Cultivator contact your local Great Plains
dealer or call

months it is a good idea to fold the machine
then set it down on the ground so all of the
cylinders are retracted to protect the cylinder
rods. This will extend the life of the cylinder
seals and reduce internal and external leaks
that may cause future problems maintaining a
level machine.

excessive wear. Replace broken or bent teeth.
Your drag is an important part of the tillage
operation.

Great Plains Mfg. at [phone]

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Great Plains Mfg., Inc. Table of Contents ► Section 5: Specifications and Capacities

Specifications and Capacities

3-Section Field Culti vator S p eci fications

Model Tilliage Center 1st Ext. No. of Approx. Aprox.

No. Width Height Width Size Wing Size Shanks Weight Horsepower

6113 13' 7" 13' 8" 10' 2' 23 4,010 70-90
6116 15' 11" 16' 10' 2' 28" 27 4,204 85-105
6318 18' 3" 7' 10" 13' 9" 10' 4' 31 5,543 100-120
6320 20' 7" 9' 13' 9" 10' 4' 28" 35 5,678 115-135
6323 22' 11" 10' 2" 13' 9" 10' 6 1/ 2' 39 6,616 130- 150
6325 25' 3" 11' 4" 13' 9" 10' 6 1/2' 28" 43 6,809 140-160
6328 27' 9" 12' 6" 13' 9" 10' 9' 47 7,241 150-170
6330 29' 11" 13' 8" 13' 9" 10' 10' 51 8,400 160-180
6332 32' 3" 14' 10" 13' 9" 10' 10' 28" 55 8,630 170-190
7332 32' 3" 13' 8" 16' 1" 12' 10' 55 8,630 170-190
7334 34' 7" 14' 10" 16' 1" 12' 11' 59 9,320 180-200
7337 36' 11" 16' 16' 1" 12' 12 1/2' 63 10, 096 190-210
7341 41' 7" 14' 10" 16' 1" 12' 11' 84" 71 10,741 200-220
7344 43' 11" 16' 16' 1" 12' 12 1/2' 84" 75 10,979 220-240

Transport

Walking Tandems on wings of M odel 6323 and larger.
Models 7341 and 7344 hav e flipover wing extensions.

With a continued commitment to constantly improving our products, these specifications are subject to change without notice.

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Appendix Table of Contents ► Great Plains Mfg., Inc..

Appendix

Torq ue Values Chart fo r Com mon Bolt S i z e s

Bolt Head Id en tifica tion Bolt Head Ide n tifica tion

Bolt Size

(inches)

¹

in-tpi

1/4" - 20 7.4 5.6 11 8 16 12 M 5 X 0.8 4 3 6 5 9 7

1/4" - 28 8.5 6 13 10 18 14 M 6 X 1 7 5 11 8 15 11
5/16" - 18 15 11 24 17 33 25 M 8 X 1.25 17 12 26 19 36 27
5/16" - 24 17 13 26 19 37 27 M 8 X 1 18 13 28 21 39 29

3/8" - 16 27 20 42 31 59 44 M10 X 1.5 33 24 52 39 72 53

3/8" - 24 31 22 47 35 67 49 M10 X 0.75 39 29 61 45 85 62
7/16" - 14 43 32 67 49 95 70 M12 X 1.75 58 42 91 67 125 93
7/16" - 20 49 36 75 55 105 78 M12 X 1.5 60 44 95 70 130 97

1/2" - 13 66 49 105 76 145 105 M12 X 1 90 66 105 77 145 105

1/2" - 20 75 55 115 85 165 120 M14 X 2 92 68 145 105 200 150
9/16" - 12 95 70 150 110 210 155 M14 X 1.5 99 73 155 115 215 160
9/16" - 18 105 79 165 120 235 170 M16 X 2 145 105 225 165 315 230

5/8" - 11 130 97 205 150 285 210 M16 X 1.5 155 115 240 180 335 245

5/8" - 18 150 110 230 170 325 240 M18 X 2.5 195 145 310 230 405 300

3/4" - 10 235 170 360 265 510 375 M18 X 1.5 220 165 350 260 485 355

3/4" - 16 260 190 405 295 570 420 M20 X 2.5 280 205 440 325 610 450

7/8" - 9 225 165 585 430 820 605 M20 X 1.5 310 230 650 480 900 665

7/8" - 14 250 185 640 475 905 670 M24 X 3 480 355 760 560 1050 780

1" - 8 340 250 875 645 1230 910 M24 X 2 525 390 830 610 1150 845

1" - 12 370 275 955 705 1350 995 M30 X 3.5 960 705 1510 1120 2100 1550

1-1/8" - 7 480 355 1080 795 1750 1290 M30 X 2 1060 785 1680 1240 2320 1710

1 1/8" - 12 540 395 1210 890 1960 1440 M36 X 3.5 1730 1270 2650 1950 3660 2700

1 1/4" - 7 680 500 1520 1120 2460 1820 M36 X 2 1880 1380 2960 2190 4100 3220

1 1/4" - 12 750 555 1680 1240 2730 2010

1 3/8" - 6 890 655 1990 1470 3230 2380

1 3/8" - 12 1010 745 2270 1670 3680 2710

1 1/2" - 6 1180 870 2640 1950 4290 3160

1 1/2" - 12 1330 980 2970 2190 4820 3560

N · m²ft-lb

Torque tolerance + 0%, -15% of torquing v a lues. U nless otherwise specified use torque values listed above.

³

N · m ft-lb N · m ft-lb mm x pitc h N · m ft-lb N · m ft-lb N · m ft-lb

Bolt Size

(metric)

4

¹ in-tpi = nominal thread diameter in inches-threads per inch

² N· m = newton-meters

4

mm x pitch = nominal thread diameter in millimeters x thread pitch

³ ft-lb= foot pounds

Class 10.9Grade 2 Grade 5 Grade 8 Class 5.8 Class 8.8

Tire Inflation Chart

Tire Size

Inflation

PSI

Tire Size

Inflation

PSI

6.70 x 15" 4-Ply 32 11L x 15" 8-Ply Rib Implement 36

9.5L x 15" 8-Ply Rib Implement 44 11L x 15" 12-Ply Rib Implement 52

9.5L x 15" 12-Ply Rib Implement 64 11L x 15" F-Ply Rib Implement 90

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Great Plains Mfg., Inc. Table of Contents ► Appendix

Warranty

Great Plains Manufacturing, Incorporated warrants to the original purchaser
that this tillage equipment will be free from defects in material and
workmanship for a period of one year from the date of original purchase when
used as intended under normal service conditions for personal use; 90 days for
commercial or rental purposes. This Warranty is limited to the replacement of
any defective part by Great Plains Manufacturing, Incorporated and the
installation by the dealer of any such replacement part. Great Plains reserves
the right to inspect any equipment or part which are claimed to have been
defective in material or workmanship. This Warranty does not apply to any
part or product which in Great Plains’ judgment shall have been misused or
damaged by accident or lack of normal maintenance or care, or which has
been repaired or altered in a way which adversely affects its performance or
reliability, or which has been used for a purpose for which the product is not
designed. This Warranty shall not apply if the product is towed at a speed in
excess of 20 miles per hour.

Claims under this Warranty must be made to the dealer which originally sold
the product and all warranty adjustments must by made through such dealer.
Great Plains reserves the right to make changes in materials or design of the
product at any time without notice. This Warranty shall not be interpreted to
render Great Plains liable for damages of any kind, direct, consequential, or
contingent, to property. Furthermore, Great Plains shall not be liable for
damages resulting from any cause beyond its reasonable control. This
Warranty does not extend to loss of crops, losses caused by harvest delays or
any expense or loss for labor, supplies, rental machinery or for any other
reason.

No other warranty of any kind whatsoever, express or implied, is made
with respect to this sale; and all implied warranties of merchantability
and fitness for a particular purpose which exceed the obligations set forth
in this written warranty are hereby disclaimed and excluded from this
sale.

This Warranty is not valid unless registered with Great Plains Manufacturing,
Incorporated within 10 days from the date of original purchase.

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