Great Plains 7336 DH Operator Manual
Table of Contents Index
7000 Series II Disk Harrow
Operator Manual
7000 Series II
7323, 7326, 7329
Manufacturing, Inc.
www.greatplainsmfg.com
Read the operator 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!
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Illustrations may show alternate spacings and/or optional equipment not supplied with
standard unit.
ORIGINAL INSTRUCTIONS
© Copyright 2014 Printed 2014-06-30 556-235M
Table of Contents Index
EN
Table of Contents Index
Table of Contents Index
Great Plains Manufacturing, Inc. Cover Index iii
Table of Contents
Important Safety Information ...................................... 1
Safety Decals ................................................................. 5
Introduction ................................................................10
Description of Unit ........................................................10
Intended Usage ........................................................10
Models Covered .......................................................10
Document Family......................................................10
Using This Manual........................................................10
Definitions................................................................. 10
Owner Assistance ........................................................11
Product Support .......................................................11
Preparation and Setup ...............................................12
Prior to Going to the Field Checklist.............................12
Hitching Disk Harrow to Tractor ...................................13
Electrical Hookup......................................................14
Hydraulic Hose Hookup............................................ 14
Clevis Hitch...............................................................15
Category III Hitch..........................................................15
Category IV Hitch ......................................................... 16
Category V Hitch .......................................................... 16
Transport Locks........................................................ 17
First time Field Adjustments .........................................17
Pre-Leveling of Machine........................................... 17
Scraper Adjustment..................................................18
Operating Instructions...............................................19
Pre-Start Checklist .......................................................19
Unfolding ...................................................................... 20
Folding..........................................................................20
Transporting the Disk Harrow...................................21
Transport Checklist...................................................21
Field Operations ...........................................................22
Field Set-Up Checklists............................................22
Operations Checklists .................................................. 23
Hitching .................................................................... 23
Transport..................................................................23
Field Start.................................................................23
Field Turns ............................................................... 23
End Field Work......................................................... 23
General Operation and In-Field Adjustments............... 23
Transport Locks ........................................................... 24
Manual Guage Wheel Adjustment ........................... 24
Hydraulic Gauge Wheel Adjustment ........................ 24
Thread Protectors ........................................................ 25
Adjusting and Using Tractor Hydraulics
Depth Control ................................................... 25
Tractor Detents ........................................................ 25
Leveling........................................................................ 27
Rear Attachment Settings ............................................ 28
Spike Drag Settings ................................................. 28
Heavy Coil Tine Settings..........................................28
Maintenance and Lubrication ................................... 29
Maintenance ................................................................ 29
Lubrication ................................................................... 30
End of Season.......................................................... 31
Beginning of Season ................................................ 31
Appendix A - Reference Information........................ 32
Specifications and Capacities ...................................... 32
Tire Inflation & Warranty .............................................. 33
Hydraulic Connectors and Torque ............................... 34
Warranty ...................................................................... 36
Index............................................................................ 37
© Copyright 2014 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.
2014-06-30 Cover Index 556-235M
Trademarks of Great Plains Manufacturing, Inc. include: Singulator Plus, Swath Command, Terra-Tine.
Registered Trademarks of Great Plains Manufacturing, Inc. include:
Air-Pro, Clear-Shot, Discovator, Great Plains, Land Pride, MeterCone, Nutri-Pro, Seed-Lok, Solid Stand,
Terra-Guard, Turbo-Chisel, Turbo-Chopper, Turbo Max, Turbo-Till, Ultra-Till, Ver ti-Till, Whirlfilter, Yield-Pro.
Brand and Product Names that appear and are owned by others are trademarks of their respective owners.
Printed in the United States of America
iv 7000 Series II Table of Contents Index Great Plains Manufacturing, Inc.
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 1
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.
Prepare for Emergencies
▲ Be prepared if a fire starts
▲ Keep a first aid kit and fire extinguisher handy.
▲ Keep emergency numbers for doctor, ambulance, hospital
and fire department near phone.
Be Familiar with Safety Decals
▲ Read and understand “Safety Decals” on page 5,
thoroughly.
▲ Read all instructions noted on the decals.
▲ Keep decals clean. Replace damaged, faded and illegible
decals.
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Wear Protective Equipment
▲ Wear clothing and equipment appropriate for the job.
▲ Prolonged exposure to loud noise can cause hearing
impairment or loss. Wear suitable hearing protection such
as earmuffs or earplugs.
▲ Avoid wearing entertainment headphones while operating
machinery. Operating equipment safely requires the full
attention of the operator.
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, seek immediate medical assistance
from a physician familiar with this type of injury.
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 implement.
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 during operation.
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 3
Transport Machinery Safely
Maximum transport speed for Disk Harrow is 20 mph
(32 kph). Some rough terrains require a slower speed.
Sudden braking can cause a towed load to swerve and
upset.
▲ Do not exceed 20 mph (32 km/h). 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 a Disk Harrow unless the towing vehicle is rated
for, and ballasted for, the weight of the Disk Harrow.
▲ Carry reflectors or flags to mark Disk Harrow in case of
breakdown on the road.
▲ Do not fold or unfold the Disk Harrow while the tractor is
moving.
Check for Overhead Lines
The Disk Harrow requires at least 14 feet (4.3 m) for
Models 7329 & 7333 and 15 feet (4.6m) for Models 7336
of vertical clearance in transport. Contacting overhead
electrical lines can introduce lethal voltage levels on Disk
Harrow and tractor frames. A person touching almost any
metal part can complete the circuit to ground, resulting in
serious injury or death. At higher voltages, electrocution
can occur without direct line or body contact.
▲ Avoid overhead lines during folding, unfolding, transport
and parking.
Shutdown and Storage
▲ Lower Disk Harrow, put tractor in park, turn off engine,
and remove the key.
▲ Secure Disk Harrow using blocks and supports provided.
▲ Detach and store Disk Harrow in an area where children
normally do not play.
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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 Disk Harrow, put tractor in park, turn off engine,
and remove key before performing maintenance.
▲ Make sure all system pressure is relieved.
▲ Disconnect battery ground cable (-) before servicing or
adjusting electrical systems or before welding on Disk
Harrow.
▲ 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 Disk Harrow before
operation.
Safety At All Times
Thoroughly read and understand the instructions in this
manual before operation. Read all instructions noted on
the safety decals.
▲ Be familiar with all Disk Harrow functions.
▲ Operate machinery from the driver’s seat only.
▲ Do not leave Disk Harrow unattended with tractor engine
running.
▲ Do not dismount a moving tractor. Dismounting a moving
tractor could cause serious injury or death.
▲ Do not stand between the tractor and Disk Harrow during
hitching.
▲ Keep hands, feet and clothing away from moving parts.
▲ Watch out for wires, trees, etc., when folding and raising
Disk Harrow. Make sure all persons are clear of working
area.
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 5
Safety Decals
Safety Reflectors and Decals
Your implement comes equipped with all lights, safety
reflectors and decals in place. They were designed to
help you safely operate your implement.
▲ Read and follow decal directions.
▲ Keep lights in operating condition.
▲ 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 decal placement.
▲ When ordering new parts or components, also request
corresponding safety decals.
Transport Decals
818-055C
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 Reflector
On rear of wing stop;
1 total
838-614C
Red Reflectors
On rear face of light bracket mount tube (top); and Rear
of Wing Stop on Models 7330, 7333, & 7336 (outside)
2 total - Models 7323-7329
4 total - Models 7330-7336
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838-603C
Daytime Reflectors
On rear face of light bracket mount tube (bottom); and
Rear of Wing Stop on Models 7330, 7333, & 7336
(inside);
2 total - Models 7323-7329
4 total - Models 7330-7336
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838-615C
Amber Reflectors
On front of light brackets. On front, outside of center
frame, on outside, rear of center frame, rear of finishing
attachment (not shown), visible from side while folded for
transport;
8 total
Danger Decals
838-600C
Danger: Crushing Hazard
On front of hitch tube (left, front);
1 total
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 7
838-599C
Danger: Electrocution
On front side of center frame, (left side);
1 total
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Warning Decals
838-606C
Warning: Tongue Rising
Front od hitch (left, front);
1 total
838-602C
Warning: Overhead Wing
Outside, center of center frame and wing frames
(both sides);
4 total
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838-611C
Warning: Hand Crushing
On front side of center frame (both sides);
2 total
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838-094C
Warning: High Pressure Fluid Hazard
On front of hitch tube, left rear;
1 total
Caution Decals
838-598C
Caution: General Instructions
On front face of hitch tube (top);
1 total
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Great Plains Manufacturing, Inc. Table of Contents Index Important Safety Information 9
Notice Decals
838-613C
Notice: Transport Lock
Outside of center frame (both sides);
2 total
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10 7000 Series II Table of Contents Index Great Plains Manufacturing, Inc.
Introduction
Great Plains welcomes you to its growing family of new
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product owners. The 7000 Series II Disk Harrow 7323 7336DH has been designed with care and built by skilled
workers using quality materials. Proper setup,
maintenance, and safe operating practices will help you
get years of satisfactory use from the machine.
Description of Unit
The 7000 Series II Disk Harrow 7323 - 7336DH is a three
section primary and secondary tillage tool. Working
width ranges from 23 to 36 feet. The implement is
designed to cut out and bury roots and crop residue. Kill
weeds and dry out the soil, level ridges and ruts and for
seedbed preparation. Various finishing attachments are
also available to further smooth, redistribute residue, kill
weeds, and break clods.
Intended Usage
Use the 7000 Series II Disk Harrow for building and
maintaining beds in conventionally tilled ground. Do not
modify the disk harrow for use with attachments other
than Great Plains options and accessories specified for
use7000 Series IIDisk Harrow.
Models Covered
7323DH 23-Foot, 3-Section
7326DH 26-Foot, 3-Section
7329DH 29-Foot, 3-Section
7330DH 30-Foot, 3-Section
7333DH 33-Foot, 3-Section
7336DH 36-Foot, 3 Section
Document Family
556-235Q Pre-Delivery Manual
556-235M Owner’s Manual (this document)
556-235P Parts Manual
Figure 1
7000 Series II Disk Harrow
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Definitions
The following terms are used throughout this manual.
Right-hand and left-hand as used in
this manual are determined by facing
the direction the machine will travel
while in use unless otherwise stated.
An orientation rose in some line art
illustrations shows the directions of:
Up, Back, Left, Down, Front, Right.
A crucial point of information related to the current topic. Read
and follow the directions to remain safe, avoid serious damage
to equipment and ensure desired field results.
Note: Useful information related to the preceding topic.
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Using This Manual
This manual will familiarize you with safety, assembly,
operation, adjustments, 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.
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