Operator’s Manual
SN DD1079+
2S-2600 and 2S-2600F
Two-Section Folding Drill
Manufacturing, Inc.
www.greatplainsmfg.com
Read the operator manual entirely. When you see this symbol, the subsequent instruc-
!
tions and warnings are serious - follow without exception. Your life and the lives of others depend on it!
© Copyright 2010 Printed
2013-09-26
17262
Illustrations may show optional equipment not supplied with standard unit.
195-200M-A
Table of Contents
Table of Contents
Great Plains Mfg., Inc.
Important Safety Information . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Description of Unit . . . . . . . . . . . . . . . . . . . . . 8
Using This Manual. . . . . . . . . . . . . . . . . . . . . 8
Owner Assistance . . . . . . . . . . . . . . . . . . . . . 8
Section 1 Preparation and Setup . . . . . . . . . . . 9
Prestart Checklist . . . . . . . . . . . . . . . . . . . . . 9
Tractor Hookup . . . . . . . . . . . . . . . . . . . . . . . 9
Hydraulic Hose Hookup. . . . . . . . . . . . . . . . 10
Bleeding the Hydraulics. . . . . . . . . . . . . . . . 11
Section 2 Operating Instructions . . . . . . . . . . 14
Prestart Checklist . . . . . . . . . . . . . . . . . . . . 14
Folding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unfolding . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Folding & Unfolding Quick Reference . . . . . 15
Setting the Bypass Valve . . . . . . . . . . . . . . . 16
Adjusting the Counter Balance Valve . . . . . . 17
Opener Operation . . . . . . . . . . . . . . . . . . . . 18
Opener Lock Up. . . . . . . . . . . . . . . . . . . . . . 20
Point Row Operation . . . . . . . . . . . . . . . . . . 20
Fertilizer Box Operation. . . . . . . . . . . . . . . . 20
Shaft Monitor Operation. . . . . . . . . . . . . . . . 21
Marker Operation. . . . . . . . . . . . . . . . . . . . . 21
Transporting. . . . . . . . . . . . . . . . . . . . . . . . . 22
Parking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Section 3 Adjustments . . . . . . . . . . . . . . . . . . 23
Seed Rate Calibration . . . . . . . . . . . . . . . . . 23
Seed Rate Charts (pounds per acre). . . . . . 25
Fertilizer Rate Calibration . . . . . . . . . . . . . . 29
Fertilizer Meter Rate Charts . . . . . . . . . . . . 30
Small Seeds Attachment . . . . . . . . . . . . . . . 31
Small Seeds Rate Chart (Imperial) . . . . . . . 31
Small Seeds Rate Chart (Metric). . . . . . . . . 32
Seeding Depth. . . . . . . . . . . . . . . . . . . . . . . 33
00 Series Opener Down Pressure. . . . . . . . 33
00 Series Opener Depth . . . . . . . . . . . . . . . 35
00 Series Opener Frame Adjustment . . . . . 36
00 Series Disk Scraper Adjustment . . . . . . . 36
00 Series Seed-Lok Lock Up . . . . . . . . . . . . 36
Marker Adjustments . . . . . . . . . . . . . . . . . . . 39
Seed and Fertilizer Capacity . . . . . . . . . . . . 41
Frame Adjustments . . . . . . . . . . . . . . . . . . . 42
Section 4 Troubleshooting . . . . . . . . . . . . . . . . 44
Section 5 Maintenance and Lubrication . . . . . 46
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . 46
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Section 6 Options . . . . . . . . . . . . . . . . . . . . . . . 55
Flat Folding Marker. . . . . . . . . . . . . . . . . . . . 55
00 Series Seed-Lok Firming Wheel . . . . . . . 55
Seed Cup Plugs . . . . . . . . . . . . . . . . . . . . . . 56
Shaft Monitor . . . . . . . . . . . . . . . . . . . . . . . . 56
Weight Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Two Outlet Hydraulic Kit . . . . . . . . . . . . . . . . 57
Dual Gauge Wheels . . . . . . . . . . . . . . . . . . . 57
Point Row Clutch . . . . . . . . . . . . . . . . . . . . . 57
Fertilizer Box. . . . . . . . . . . . . . . . . . . . . . . . . 58
Offset Box Divider. . . . . . . . . . . . . . . . . . . . . 58
Section 7 Specifications and Capacities . . . . 59
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Tire Inflation Chart . . . . . . . . . . . . . . . . . . . . 60
Torque Values Chart . . . . . . . . . . . . . . . . . . 60
Hydraulic Schematics. . . . . . . . . . . . . . . . . . 61
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
© Copyright 2000, 2006, 2010. 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, Seed-Lok
All other brands and product names are trademarks or registered trademarks of their respective holders.
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
Great Plains Manufacturing, Incorporated Trademarks
Printed in the United States of America.
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. The signal words are:
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.
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.
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.
Keep Riders
Off Machinery
Riders obstruct the operator’s view.
Riders could be struck by foreign
objects or thrown from machine.
▲ Never allow riders on implement.
▲ Never allow children to operate
equipment.
For Your Protection
▲ Thoroughly read and understand
Safety Decals, page 4. Read all
instructions noted on decals.
OFF
Shutdown and Storage
▲ Put tractor in park, turn off engine,
and remove key.
▲ To avoid negative-tongue-weight
hazard, lower parking stands,
lower openers and remove
hydraulic down pressure before
unhitching from unfolded drill.
▲ Detach and store implement in an
area where children normally do
not play. Secure implement with
blocks and supports.
Handle
Chemicals Properly
Agricultural chemicals can be dangerous. Improper use can seriously
injure persons, animals, plants, soil
and property.
▲ Wear protective clothing.
▲ Handle all chemicals with care.
▲ Follow instructions on container
label.
▲ Avoid inhaling smoke from any
type of chemical fire.
▲ Store or dispose of unused chem-
icals as specified by chemical
manufacturer.
9/26/13
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
1
Important Safety Information
Great Plains Mfg., Inc.
Use Safety
Lights and Devices
Slow-moving tractors, self-propelled
equipment 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.
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.
▲ Fold drill only when tractor and
drill are stopped and the tractor
park brake is set.
Use A Safety Chain
▲ Use a safety chain to help con-
trol drawn machinery should it
separate from tractor drawbar.
▲ Use a chain with a strength rat-
ing 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.
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 implement to ground, put
tractor in park, turn off engine and
remove key before performing
maintenance.
▲ Allow implement to cool completely.
▲ 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 implement before operation.
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
2
Great Plains Mfg., Inc.
Important Safety Information
Prepare for Emergencies
▲ Be prepared if a fire starts.
▲ Keep a first aid kit and fire extin-
guisher handy.
▲ Keep emergency numbers for
doctor, ambulance, hospital and
fire department near phone.
911
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.
Avoid High
Pressure Fluids Hazard
Escaping fluid under pressure can
penetrate skin, causing serious
injury.
▲ Avoid the hazard by relieving
pressure before disconnecting
hydraulic lines.
▲ Use a piece of paper or card-
board, 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 doc-
tor immediately. Any fluid injected
into the skin must be surgically
removed within a few hours or
gangrene may result.
Safety at All Times
Thoroughly read and understand this
manual before operating implement.
Refer to Safety Decals, page 4. Read
all instructions noted on decals.
▲ Be familiar with all implement
functions.
▲ Operate implement from driver’s
seat only.
▲ Do not leave tractor or implement
unattended with engine running.
▲ Do not dismount a moving tractor.
Dismounting a moving tractor could
cause serious injury or death.
▲ Do not use drill tires as a step.
Tires rotate easily when not in
contact with ground.
▲ Do not stand between tractor and
implement during hitching.
▲ Keep hands, feet and clothing
away from power-driven parts.
▲ Wear snug-fitting clothing to avoid
entanglement with moving parts.
▲ Make sure all persons are well
away before raising openers or
folding drill.
▲ Watch out for wires, trees, etc.,
when raising and folding drill.
▲ Do not turn tractor too tight, caus-
ing implement to ride up on
wheels.
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 allow 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.
9/26/13
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
3
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.
1. Read and follow decal directions.
2. Keep all safety decals clean and legible.
3. Replace all damaged or missing decals. Order new decals
from your Great Plains dealer. Refer to this section for
proper decal placement.
17350
Great Plains Mfg., Inc.
4. When ordering new parts or components, also request corresponding safety decals.
5. To install new decals:
a. Clean the area on which the decal is to be placed.
b. Peel backing from decal. Press firmly on surface,
being careful not to cause air bubbles under decal.
818-003C
Slow Moving Vehicle Sign
Left-hand box, inside panel
15528
15566
838-266C
Red Reflectors
Inside ends of walk-
boards; two decals total
838-265C
Amber Reflectors
Outside ends of walk-
boards; left and right side
on rear of walkboards; six
decals total
838-267C
Daytime Reflectors
Inside ends of walk-
boards; two decals total
15528
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
4
Great Plains Mfg., Inc.
Important Safety Information
17310
818-019C
Warning Neg Tongue Wt
Drill tongue
17309
17310
818-045C
Warning Pinch Pt/Crus
Behind folding latch
818-078C
Caution FP-HC-MF-24&3
Drill tongue
9/26/13
17310
818-337C
Warning 20 MPH Trans
Drill tongue
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
5
Important Safety Information
17310
Great Plains Mfg., Inc.
818-339C
Warning High Pressure
Drill tongue
17313
17318
818-398C
Caution Tires Not a S
Both transport axles;two
decals total
818-751C
Caution Tire 32 PSI
Gauge-wheel rims; four decals total
818-752C
17314
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
6
Caution Tire 52 PSI
Transport-wheel rims; four decals total
Great Plains Mfg., Inc.
Important Safety Information
17351
818-861C
Transport Lock War
Mainframe, rear of drill
17352
818-864C
Danger Crushing Haz
Outside support panels; two decals total
818-682C
Warning Pinch/Crush M
First stage marker arm
9/26/13
17296
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
7
Introduction
Introduction
Great Plains Mfg., Inc.
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 setup, maintenance and safe operating practices
will help you get years of satisfactory use from your machine.
Description of Unit
The 2S-2600 is a towed seeding implement. This two-section drill has a working width of 26 feet and folds to a transport width of 15 feet. The drill has straight-arm, doubledisk openers. The opener disks make a seed bed, and
seed tubes mounted between the disks place seed in the
furrow. Press wheels following the opener disks close the
furrow and gauge opener seeding depth. A T-handle on
the opener body is for seeding-depth adjustments. Seeding rates are adjustable with the seed-rate-adjustment
handle and sprocket box.
The 2S-2600 features active hydraulic down pressure on
the opener frames. When used on a tractor with closedcenter hydraulics, constant down pressure ensures even
opener penetration in uneven ground. Hydraulic down
pressure is adjustable at a single point.
The 2S-2600F allows you to drill seed and apply fertilizer
in the same field pass. Dividers partition the drill boxes into
seed and fertilizer compartments. The openers apply dry
fertilizer to the seed trench before the furrow is closed. You
also can use both compartments for seed.
Intended Usage
Use this implement to seed production-agriculture crops
in conventional-tillage applications.
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.
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.
IMPORTANT: A crucial point of information related to
the preceding topic. For safe and correct operation,
read and follow the directions provided before continuing.
Owner Assistance
If you need customer service or repair parts, contact a
Great Plains dealer. They have trained personnel, repair
parts and equipment specially designed for Great Plains
products.
Your machine’s parts were specially designed and 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 plate is located on
the front, left-hand side of the drill as shown in Figure A.
17315
Figure A
Serial Number
Record your drill model and serial number 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 dealership service man-
ager. Make sure they are aware of any problems so
they can assist you.
2. If you are still not satisfied, seek out the owner or gen-
eral manager of the dealership.
3. For further assistance write to:
Product Support
Great Plains Mfg. Inc., Service Department
PO Box 5060
Salina, KS 67402-5060
NOTE: Useful information related to the preceding topic.
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
8
Great Plains Mfg., Inc.
Section 1 Preparation and Setup
Section 1 Preparation and Setup
This section will help you prepare your tractor and drill for
use. You must adjust drill-tongue height to match your
tractor-drawbar height, hook up the drill hydraulics to the
tractor, and check that the hydraulics have been bled.
Prestart Checklist
1. Read and understand “Important Safety Information” beginning on page 1.
2. Check that all working parts are moving freely, bolts
are tight and cotter pins are spread.
3. Check that all grease fittings are in place and lubricated. Refer to Lubrication,“Maintenance and Lubrica-
tion,” page 48.
4. Check that all safety labels and reflectors arecorrectly
located and legible. Replace if damaged. Refer to
Safety Labels,“Important Safety Information,” page
4.
5. Inflate tires to recommended pressure as listed on
Tire Inflation Chart,“Appendix,” page 60. Tighten
wheel bolts as specified on Torque Values Chart,“Ap-
pendix,” page 60.
Tractor Hookup
1. Choose a drill-hitch option that is compatible with your
tractor drawbar.
The 2S-2600 has three hitch options:
• a clevis hitch,
• a small-hole, single-strap hitch or
• a large-hole, single-strap hitch.
Use the clevis hitch with tractors that have single-tang
drawbars.Use the single-strap hitch for tractors with
clevis drawbars. Always use a locking-style hitch pin
sized to match the holes in the hitch and drawbar.
2. To adjust the drill hitch to match your tractor-drawbar
height, mount tongue jack on side of tongue as shown
in Figure 1-1. Use jack to raise drill tongue so lowest
hitch hole is 18 inches off ground.
You may be severely injured or killed by being crushed between
the tractor and drill. Do not stand or place any part of your
body between drill and moving tractor. Stop tractor engine and
set park brake before installing hitch pin.
This drill can have positive and negative tongue weight, which
can work the hitch pin loose during transport. To avoid serious
injury or death due to a road accident, always use a clevis hitch
or clevis drawbar with a locking-style hitch pin.
15564
Figure 1-1
Jack in Lifting Location
3. Bolt drill hitch onto drill tongue to match your tractordrawbar height. Refer to Figure 1-2. You can turn the
hitch over for a total of six different hitch heights.
NOTE: When hitching drill to a different tractor, check for a
difference in drawbar heights. If heights are different, readjust hitch height accordingly.
15623
9/26/13
Figure 1-2
Hitch Heights in Inches
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
9
Section 1 Preparation and Setup
Great Plains Mfg., Inc.
4. Securely attach safety chain to an anchor on tractor
capable of pulling drill.
5. Store jack on top of tongue as shown in Figure 1-3.
15563
Figure 1-3
Jack Storage Location
6. Plug drill electrical lead in tractor seven-pin connector.
If your tractor is not equipped with a seven-pin connector, contact your dealer for installation.
Hydraulic Hose Hookup
Great Plains hydraulic hoses are color coded to help you
hook up hoses to your tractor outlets. Hoses are color coded as follows.
Color Tie Hydraulic Function
Red Opener Lift
Blue Transport Lift
White Fold
Orange Marker
To distinguish hoses on the same hydraulic circuit, refer to
plastic hose holders. See Figure 1-4. Hoses under extended-cylinder symbol feed cylinder base ends. Hoses under
retracted-cylinder symbol feed cylinder rod ends.
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 immediately. Any fluid injected into the skin must be surgically removed within a few hours or gangrene may result.
IMPORTANT: To run drill on tractors with open-center
hydraulics or on tractors with fixed-displacement hydraulic pumps, you must install a Great Plains kit, part
number 194-143A. If you are not familiar with your
tractor hydraulics, consult your tractor dealer.
17641
Figure 1-4
Hydraulic Hose Label
1. Connect opener-lift hoses to circuit designated for hydraulic-motor control.
2. Connect transport-lift hoses to tractor remote valve.
3. Connect fold hoses to tractor remote valve.
NOTE: If your tractor has only two remote valves, you must
install a double-selector valve to combine the transport-lift
and opener-lift circuits. Refer to Two Outlet Hydraulic Kit,
“Options,” page 57.
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
10
Great Plains Mfg., Inc.
Section 1 Preparation and Setup
Bleeding the Hydraulics
To function properly, the hydraulics must be free of air. If
hydraulics have not been bled, they will operate with
jerky, uneven motions and could cause wings to drop
rapidly during folding or unfolding. If hydraulics were not
bled during initial implement setup or if you replace a
part in hydraulic system during the life of the drill, complete the following procedures.
Raising openers on unfolded, unhitched drill will cause drill
tongue to rise suddenly, which could cause serious injury or
death. Be certain that drill is hitched securely to your tractor
drawbar and the safety chain is securely attached to tractor
before raising openers and unfolding drill.
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 forsuspected leaks. Wear
protective gloves and safety glasses or goggles when working
with hydraulic systems. If an accident occurs, see a doctor
immediately. Any fluid injected into the skin must be surgically removed within a few hours or gangrene may result.
as needed. System capacity for entire drill is about 4
1/2 gallons.
2. Make sure opener frames are locked up in road posi-
tion. Refer to Opener Lock Up,“Operation Instruc-
tions,” page 20.
3. Turn knob on both pressure-control valves (1) com-
pletely counterclockwise, then turn valves clockwise
far enough to build up 1000 psi (about three turns).
4. Turn knob on bypass valve (2) completely clockwise
for no oil flow.
5. Loosen hose-end fittings (3) at the locations shown in
Figure 1-5.
NOTE: Do not loosen an O-ring fitting for bleeding. Bleeding air from an O-ring fitting will damage the seal.
6. Slowly supply oil to top side of pressure-control valves
until oil begins to appear at a loosened hose fitting. As
oil begins to appear at a fitting, tighten that fitting.
7. Slowly supply oil to bottom side of pressure-control
valves until oil begins to appear at remainingloosened
hose fitting. As oil begins to appear at the fitting, tighten fitting. Continue to supply oil to bottom side of pressure-control valves until all openers are raised
completely.
8. Move opener transport locks to field position and cycle
openers up and down ten times. Each time you lower
Bleeding Opener Lift Hydraulics
Refer to Figure 1-5.
1. Check hydraulic fluid level in
tractor reservoir and fill toprop-
er level. Add fluid to system
openers, hold tractor remote lever until opener circuit
builds up to pressure set at control valves.
9. After cycling openers, return opener transport locks to
road position.
Figure 1-5
Bleeding Opener Lift Hydraulics
9/26/13
22981
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
11
Section 1 Preparation and Setup
Great Plains Mfg., Inc.
Bleeding Fold Hydraulics
1. Check hydraulic fluid level in tractor reservoir and fill to
proper level. Add fluid to system as needed.
2. With drill unfolded and fold cylinders completely extended, disconnect rod-end pins and swing cylinders
so they will not contact anything when extended.
3. Loosen rod-end-hose fitting at elbow on left fold cylinder (1). See Figure 1-6.
NOTE: Do not loosen an O-ring fitting. Bleeding air from
an O-ring fitting will damage the seal.
4. Slowly supply oil to rod end of fold cylinders until oil
appears at loosened hose fitting. Tighten fitting and
completely retract fold cylinders.
5. With cylinders completely retracted, loosen base-endhose fitting at elbow on left fold cylinder (2). See Figure 1-6.
6. Slowly supply oil to base end of fold cylinders until oil
appears at loosened hose fitting. Tighten fitting and
cycle fold cylinders in and out several times.
7. Repin cylinder-rod clevis.
Figure 1-6
Bleeding Fold Hydraulics
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
12
17299
Great Plains Mfg., Inc.
Section 1 Preparation and Setup
Bleeding Transport Lift Hydraulics
1. Check hydraulic fluid level in tractor reservoir and fill to
proper level. Add fluid to system as needed.
2. With drill lowered into field position, loosen base-endhose fitting at elbow on right-hand transport-lift cylinder (1). See Figure 1-7.
3. Slowly supply oil to base end of transport-lift cylinders
until oil appears at the loosened hose fitting. As oil appears at fitting, tighten that fitting.
4. Completely extend transport-lift cylinders and immediately lock cylinders up by flipping up cylinder lock
channels on both transport-lift cylinders. Refer to Figure 2-4, page 14.
The hydraulics could fail, causing the openers to fall and crush
you. To prevent serious injury or death, always secure cylinder
lock channels over extended transport-lift cylinders before
working under openers.
5. When cylinder lock channels are in place, loosen rodend-hose fitting at elbow on left transport-lift cylinder
(2). See Figure 1-7.
6. Slowly supply oil to rod end of transport-lift cylinders
until oil appears at loosened hose fitting. As oil begins
to appear at fitting, tighten that fitting.
7. Extend transport-lift cylinders and remove cylinder
lock channels. Completely cycle transport-lift hydraulics several times.
Bleeding Marker Hydraulics
You may be injured if hit by a folding or unfolding marker.
Markers may fall quickly and unexpectedly if the hydraulics fail.
Never allow anyone near the drill when folding or unfolding
markers.
1. Make sure tractor hydraulic reservoir is full.
2. With markers unfolded in field position, crack hydraulic-hose fittings at base and rod ends of each marker
cylinder.
3. With tractor at idle speed, activate tractor hydraulic
valve forward until oil appears at one fitting. When oil
begins to seep out around a fitting, tighten that fitting.
Reverse the tractor hydraulic valve until oil appears at
opposite hose fitting and tighten that fitting.
4. If you have dual markers, activate your tractor hydraulic valve forward again until oil seeps out around one
fitting on the other marker cylinder and tighten that fitting. Reverse tractor hydraulic valve until oil seeps out
around remaining hose fitting and tighten it.
5. Fold and unfold markers slowly to work out all air. Use
caution when folding and unfolding markers for the
first time, checking for pinching and kinking of hoses.
17298
9/26/13
Figure 1-7
Bleeding Transport Lift Hydraulics
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
13
Section 2 Operating Instructions
Section 2 Operating Instructions
Great Plains Mfg., Inc.
This section covers general operating procedures. Experience, machine familiarity and the following information will
lead to efficient operation and good working habits. Always operate farm machinery with safety in mind.
Prestart Checklist
1. Lubricate drill as indicated under Lubrication,“Maintenance and Lubrication,” page 48.
2. Check all tires for proper inflation as indicated on Tire
Inflation Chart,“Appendix,” page 60.
3. Perform all beginning-of-season and daily service
items under Maintenance,“Maintenance and Lubri-
cation,” page 46.
4. Check the drill for worn or damaged parts. Repair or
replace them before going to the field.
5. Check all nuts, bolts and screws. Refer to Torque Val-
ues Chart,“Appendix,” page 60.
Folding
Crushing hazard – Bystanders could be crushed between the
folding drill boxes and the drill tongue. To avoid serious injury
or death, keep all bystanders well away during drill operation.
5. At front of drill, lock opener frames into road position
as shown in Figure 2-2.
15549
Figure 2-2
Opener Lock Up at Gauge Wheels
6. At rear of drill, lock opener frames into road position as
shown in Figure 2-3.
1. Park tractor and drill on level ground with tractor transmission in park. Be aware of clearance needed to fold
drill.
2. Hydraulically raise openers completely.
3. Raise drill with transport-lift cylinders until gauge
wheels are off ground and cylinders are extended
completely.
NOTE: While lifting for transport, the drill will flex in the
center before lifting gauge wheels off ground.
4. Slowly supply oil to rod end of fold circuit. Fold drill until both box frames are secured in folding latch.
17316
Figure 2-1
Folding Latch
17353
Figure 2-3
Opener Lock Up at Rear of Drill
7. At rear of drill, rotate cylinder lock channels over rods
on both transport-lift cylinders as shown in Figure 2-4.
15552
Figure 2-4
Cylinder Lock Channels Inserted for Transport
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
14
Great Plains Mfg., Inc.
Section 2 Operating Instructions
IMPORTANT: Make sure u-shaped spring clips in
lock channels clasp the cylinder rods securely. The
clips must hold the channels in position until cylinders
settle against the channels. Inspect clips regularly.
Adjust or replace clips as needed.
8. Allow transport-lift cylinders to settle against lock
channels.
9. Before transporting, check that hydraulic cylindersare
holding lock channels securely.
Unfolding
1. At front of drill, prop up latch pawl (1) as shown in Figure 2-5 so folding latch will release boxes.
1
17319
Figure 2-5
Latch Pawl Positioned for Folding
2. At front and rear of drill, position opener transport
locks in field position as shown in Figure 2-6.
15551
Figure 2-7
Cylinder Lock Channels Removed for Field Use
IMPORTANT: Do not lower openers until drill is unfolded or you will damage drill tires.
4. Slowly supply oil to base end of fold circuit. Unfold drill
by extending fold cylinders completely.
5. Completely retract transport-lift cylinders.
6. Completely lower openers to allow opener transport
locks to disengage.
Folding & Unfolding Quick Reference
To Fold Drill
1. Raise openers.
2. Extend transport cylinders.
3. Fold drill.
4. Lock opener frames and transport cylinders.
To Unfold Drill
1. Position latch pawl for release.
2. Unlock opener frames.
3. Unlock transport-lift cylinders.
4. Unfold drill.
15548
Figure 2-6
Opener Frames Unlocked
3. Supply oil to transport-lift cylinders until cylinders are
extended completely and drill is raised completely.
Rotate cylinder lock channels off cylinder rods as
shown in Figure 2-7.
9/26/13
IMPORTANT: Do not lower openers until drill is unfolded or you will damage drill tires.
5. Retract transport cylinders.
6. Lower openers.
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
15
Section 2 Operating Instructions
Great Plains Mfg., Inc.
Setting the Bypass Valve
A bypass valve is plumbed into the opener down pressure
circuit. See Figure 2-8. Tractors with load-sensing, closedcenter hydraulics require this bypass valve to protect the
tractor hydraulic system.
19045
Figure 2-8
Bypass Valve
If you are unsure what type of hydraulic system is on your
tractor, contact your tractor manufacturer.
Tractors with Open Center Hydraulics
Close bypass valve for no oil flow by turning knob on valve
clockwise completely. Always operate the drill with the bypass valve closed.
Tractors with Pressure Compensating Closed Center Hydraulics (PC Closed)
Close bypass valve for no oil flow by turning knob on valve
clockwise completely. Always operate the drill with the bypass valve closed.
Tractors with Load Sensing Closed Center Hydraulics (LS Closed) Pressure Flow Compensating (PFC) Systems
IMPORTANT: Failure to use the bypass valve on loadsensing tractors may cause major tractor damage.
1. Close bypass valve for no oil flow by turning knob on
valve clockwise completely.
2. With tractor at half throttle, adjust flow-control valve on
tractor so openers raise and lower at a reasonable
speed. Keep tractor at one-half throttle for remaining
steps.
4. Adjust pressure-control valves on drill for opener
down pressure so gauges are at 1800 psi. See Figure
2-11.
15557
Figure 2-9
Pressure Control Valves
5. While watching gauges on drill, slowly turn knob on
bypass valve counterclockwise. Adjust bypass valve
just until needles on gauges begin to move down from
1800 psi. Lock bypass valve at this setting. (See also
note below.)
6. Adjust pressure-control valves on drill to desired
opener down pressure as explained under Opener
Down Pressure, beginning on page 33.
NOTE: The higher the bypass pressure, the greater the
potential for oil heating and premature tractor damage. At
the same time, for proper opener operation the bypass
valve must be set at least 300 psi above the opener downpressure setting when the tractor is at one-half throttle.
Therefore, you should set the bypass valve as low as possible while staying at least 300 psi above the opener down
pressure setting.
While 1800 psi is a good starting point for setting the bypass valve, if you consistently operate the drill with low
opener down pressure you can set the bypass valve below
1800 psi. If you consistently operate the drill with very high
opener down pressure, you may need a bypass-valve setting above 1800 psi.
NOTE: The faster openers raise and lower, the greater potential for oil heating, premature wear or tractor damage.
Keep tractor at one-half throttle for remaining steps.
3. Engage tractor hydraulics and lower openers. Lock
hydraulic lever on tractor for continuous operation.
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
16
Great Plains Mfg., Inc.
Section 2 Operating Instructions
Adjusting the Counter Balance Valve
On the stem of the valve there is a rubber cap that protects
the threads of an adjustment stem. This stem is locked in
place with a hex nut. To adjust the valve, loosen the nut
and turn the stem using an Allen wrench.
Screwing the stem in (clockwise) pushes on a spring
which supplements the pilot line’s force on an internal piston. More spring force will let the valve open with a low pilot pressure. Less spring force will require higher pilot
pressure to open the valve.
Note: With the screw turned in fully, the spring will develop
enough force on the piston to unlock the valve, even with
no pilot pressure, causing the openers to settle.
Raise and lower the drill several times then hold hydraulic
down pressure on the openers to purge air from the system and to warm the oil. Repeat.
Raise the openers. Observe the openers closely to detect
settling. If the openers remain up, no valve adjustment is
needed.
If the openers settle, the stem is screwed in too far. Gently
back the stem out until it stops, then screw it in one turn.
Generally this is a good starting point. Check for settling.
Backing the stem out will lock the valve, screwing it in too
far can cause it to unlock.
A small increase in lowering speed can be achieved by
screwing the stem in.
9/26/13
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
17
Section 2 Operating Instructions
Great Plains Mfg., Inc.
Opener Operation
The openers are raised and lowered on their own hydraulic circuit. When used with an active hydraulic system, constant hydraulic down pressure is placed on openers for
even soil penetration across the drill. To operate openers
with live hydraulic power, always connect the opener-lift
hoses to the circuit designated for hydraulic-motor control.
To achieve proper opener flotation, the opener hydraulic
circuit must be powered by an active hydraulic system. An
active hydraulic system requires a tractor with closed-center hydraulics or pressure-flow compensated hydraulics
powered by a variable displacement hydraulic pump.
To run drill on tractors with open-center hydraulics or on
tractors with fixed-displacement hydraulic pumps, you
must install a Great Plains kit, part number 194-143A.
Contact your Great Plains dealer for ordering information.
If you are not familiar with your tractor's hydraulics, consult
your tractor dealer.
Crushing hazard – You will be seriously injured or killed if you
are caught between raising openers and drill frame. Always
stop tractor engine, set park bake, and remove key before adjusting or servicing openers. Keep all bystanders well away
during drill operation.
John Deere 8000 Series tractors: Set timer to continuous. Push lever forward until detent clicks.
Case-IH Magnum tractors: Lock lever forward in
detent position. You may need to turn up detent pressure to its maximum setting. Do not tie hydraulic lever
past detent position with a strap. See your tractor
dealer for hydraulic-system details.
Other tractors: Lock lever forward in detent position.
You may need to turn up detent pressure to maximum
or use a mechanical detent holder to hold lever forward. See your tractor dealer for proper means of providing constant flow to openers.
2. Set opener down pressure. There is one pressurecontrol valve for openers on center of drill and one for
openers on outside ends of drill. See Figure 2-12. Initially set down pressure at 800 psi, then adjust as field
conditions warrant. For more information on adjusting
hydraulic down pressure, refer to Opener Down Pres-
sure,“Adjustments,” page 33.
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 immediately. Any fluid injected into the skin must be surgically removed within a few hours or gangrene may result.
Opener Operation for Active Hydraulic Systems
IMPORTANT: Tractors with load-sensing hydraulics
must use the bypass valve to operate the 2S-2600. Failure to use the bypass valve can cause major tractor
damage. Before adjusting opener down pressure, set
bypass valve as explained under Setting the Bypass
Valve, page 16.
1. Lock hydraulic lever forward during field operation for
constant hydraulic flow to openers.
John Deere tractors with Sound-Gard ® Body: Use
lever lock clip, John Deere part number R52667, to
lock lever forward. See your tractor dealer for clip purchase and installation.
John Deere 7000 Series tractors: Rotate valve
detent selector to motor position to lock lever in forward position.
15557
Figure 2-10
Pressure Control Valves
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A 9/26/13
18
Great Plains Mfg., Inc.
Section 2 Operating Instructions
3. Set opener seeding depth by adjusting press-wheel
height. To adjust, first raise openers slightly, then lift
and slide T-handles on top of openers as shown in Figure 2-11. Adjust all press wheels to the same height.
• For shallower seeding, slide T-handles toward drill.
• For deeper seeding, slide T-handles away from drill.
While seeding, remember:
• Raise openers before turning. Never back up or turn
sharply with openers in ground. Doing so will plug openers and may damage equipment.
• For information on opener adjustments, see Opener
Down Pressure and Opener Depth,“Adjustments,”
starting on page 33. For more information on troubleshooting opener problems, see “Troubleshooting,”
page 44.
15659
Figure 2-11
Press Wheel Adjustment
Priority Flow Hydraulic Systems
On some tractors with load-sensing hydraulics, the #1 circuit is capable of taking nearly 100 percent of available hydraulic flow. Operating the openers or markers on circuit
#1 will starve the other circuit, making one function inoperable.
To operate markers and constant opener down pressure
at the same time, connect the openers to circuit #2 and the
markers to circuit #3.
Opener Operation for Non-Active Hydraulic Systems
IMPORTANT: Tractors with load-sensing hydraulics
must use the bypass valve to operate the 2S-2600. Failure to use the bypass valve can cause major tractor
damage. Before adjusting opener down pressure, set
bypass valve as explained under Setting the Bypass
Valve, page 16.
To run drill with open-center hydraulics or fixed-displacement hydraulic pumps requires a Great Plains kit, part
number 194-143A. After installing the kit, refer to the following instructions for opener operation.
1. Lower opener frames by pushing forward on tractor
hydraulic lever. Lock lever temporarily in this position
while adjusting opener down pressure.
2. With tractor hydraulic lever locked forward, set opener
down pressure. There is one pressure-control valve
for openers on center of drill and one for openers on
outside ends of drill. See Figure 2-8. Initially set down
pressure at 800 psi, then adjust as field conditions
warrant. For more information on adjusting opener
hydraulic down, refer to Opener Down Pressure,
“Adjustments,” page 33.
3. After opener down pressure is set, return tractor hydraulic lever to neutral. This locks in the selected pressure, and opener frames will remain fixed in this
position.
IMPORTANT: Open-center tractors and tractors with
fixed-displacement pumps are not designed to provide a continuous supply of pressurized oil to remote
valves. Locking hydraulic lever forward on these tractors can cause overheating of hydraulic oil and tractor damage. After setting opener down pressure,
always return hydraulic lever to neutral.
4. Set opener seeding depth by adjusting press-wheel
height. To adjust, first raise openers slightly, then lift
and slide T-handles on top of openers as shown in Figure 2-11. Adjust all press wheels to the same height.
• For shallower seeding, slide T-handles toward drill.
• For deeper seeding, slide T-handles away from drill.
While seeding, remember:
• When approaching rough terrain where you need active
hydraulics to maintain even opener penetration, push
tractor hydraulic lever forward momentarily. As soon as
you return to level ground, return lever to neutral. Do not
activate tractor hydraulic lever for more than 20 seconds
at a time, once every 2 minutes. Always wait until tractor
and drill are on level ground before returning lever to
neutral. You can bump tractor hydraulic lever forward
any time on level ground to assure the preset pressure
is correctly locked in and to reset the system.
• Raise openers before turning. Never back up or turn
sharply with openers in ground. Doing so will plug openers and may damage equipment.
• Each time you lower openers, hold tractor remote hy-
draulic lever forward for a few seconds to recharge circuit, then return lever to neutral. Return lever to neutral
only when tractor and drill are on level ground.
• For information on opener adjustments, see Opener
Down Pressure and Opener Depth,“Adjustments,”
starting on page 33. For more information on troubleshooting opener problems, see “Troubleshooting,”
page 44.
9/26/13
2S-2600 and 2S-2600F Two-Section Folding Drill 195-200M-A
19
Loading...