Table of Contents Appendix
Installation Manual
Yield-Pro® Unit-Mount Coulter
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!
29124
Illustrations may show optional equipment not supplied with standard unit or may
depict row units and/or implements that differ from yours.
ORIGINAL INSTRUCTIONS
© Copyright 2012 Printed 2012-08-27 204-141M
Table of Contents Appendix
EN
ii UMC Cover Appendix Great Plains Manufacturing, Inc.
Table of Contents
Important Safety Information...................................... 1
Introduction .................................................................. 2
Description of Unit.......................................................... 2
Intended Usage.......................................................... 2
Using This Manual ......................................................... 2
Definitions .................................................................. 2
Call-Outs .................................................................... 2
Owner Assistance .......................................................... 3
Product Support ......................................................... 3
Assembly ...................................................................... 4
Before You Start ........................................................... 4
Tools Required............................................................... 4
Unit Mount Coulter Installation....................................4
Adjustments..................................................................5
Maintenance..................................................................6
Blade Replacement ........................................................6
Appendix .......................................................................7
Torque Values Chart ......................................................7
Parts Lists.......................................................................8
Unit-Mount Coulter Assembly (204-619K) .................8
Coulter Blade Hub Assembly (204-084S)...................9
Coulter Blades ..........................................................10
Abbreviations ............................................................10
Warranty .......................................................................11
© Copyright 2005, 2006, 2012. 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.
2012-08-27 Cover Appendix 204-141M
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
Great Plains Manufacturing, Inc. Table of Contents Appendix 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.
Secure Planter
▲ Stabilize planter by using provide transport and/.or lift
locks, and available supports and blocks.
▲ Place any hitched tractor in Park, set brake and remove key.
Practice Safe Maintenance
▲ Stabilize planter by using provide transport and/.or lift
locks, and available supports and blocks.
▲ After installation, make sure all tools and parts are removed
from the planter before attempting to operate it.
2012-08-27 Table of Contents Appendix 204-141M
2UMC Table of Contents Appendix Great Plains Manufacturing, Inc.
Introduction
Great Plains welcomes you to its growing family of new
product owners.The Yield-Pro® Unit-Mount Coulter 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 parts on your Yield-Pro® Unit-Mount Coulter have
been specially designed and should only be replaced
with genuine Great Plains parts.
Intended Usage
Use the unit mount coulter (UMC) on Great Plains
planters equipped with 25 Series row units, and
adequate forward clearance. The unit mount coulter is
used for chopping residue and preparing the soil for the
opener disks. Do not modify unit mount coulter for use
with attachments other than those approved by Great
Plains.
Note: Unit mount coulters may be incompatible with
some 3-point planters, and may be incompatible
with some frame-mounted accessories. Consult
your Great Plains dealer.
Using This Manual
This manual will familiarize you with safety, assembly
and operation. Read this manual and follow the
recommendations to help ensure safe and efficient
operation. Consult your planter Operator manual for
adjustments and maintenance.
The information in this manual is current at printing.
Some parts may change to assure top performance.
U
R
B
R
F
L
D
L
R
F
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U
B
L
D
Figure 1
Yield-Pro® Unit-Mount Coulter
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.
Call-Outs
1 9
to
10 23
to
204-141M Table of Contents Appendix 2012-08-27
Single-digit callouts identify components in
the currently referenced Figure or Figures.
These numbers may be reused for different
items from page to page.
Two-digit callouts reference new parts from
the new parts lists beginning on page 8. The
descriptions match those on the parts,
cartons, bags or item tags, as well as
descriptions your updated Parts Manual.
Great Plains Manufacturing, Inc. Table of Contents Appendix Introduction 3
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 implement parts were specially designed and
should only be replaced with Great Plains parts. Always
use the implement serial and model number when
ordering parts from your Great Plains dealer. See the
implement Operator manual for the location of the
serial-number plate.
Record your kit part number here for quick reference:
Kit Part Number:__________________________
Purchase Date: __________________________
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
manager. Make sure they are aware of any problems
so they can assist you.
2. If you are still unsatisfied, seek out the owner or
general manager of the dealership.
For further assistance write to:
Product Support
Great Plains Mfg. Inc., Service Department
Salina, KS 67402-5060
PO Box 5060
785-823-3276
2012-08-27 Table of Contents Appendix 204-141M
4UMC Table of Contents Appendix Great Plains Manufacturing, Inc.
Assembly
Before You Start
1. Move the planter to an area with adequate
illumination, and a clear surface beneath for recover
of any dropped parts.
2. Unfold the planter, if a folding model.
3. Raise the planter. Raise the row units if a separate
operation. Install lift/transport locks.
4. Block tires, or put hitched tractor in Park, set parking
brake, and remove key.
Tools Required
Crushing Hazard:
Prevent frame and.or opener lowering. Coulter
installation requires working near raised row units, and
perhaps under raised frame-mounted accessories. A
lowering or falling frame, wing or row could cause
serious injury or death.
• Basic hand tools
• Screw thread adhesive, such as Loctite
Unit Mount Coulter Installation
Refer to Figure 2
1. Mount the coulter assembly to the front of the opener
unit with1⁄2inch × 11⁄2inch carriage bolts ,1⁄2inch
lock washers and1⁄2inch nuts .
2. Align the coulter blade so it is centered between the
two opener disks and tighten the bolts.
3. With the coulter assembly mounted and tightened
the coulter blade should be at or1⁄4inch above the
depth of the opener disks. See adjustment on
page 5.
20 18
16
Sharp Object Hazard:
Row unit disk blades may be sharp. Use caution when
installing or making adjustments.
16
20
18
Figure 2
Mounting Coulter Assembly
204-141M Table of Contents Appendix 2012-08-27
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Great Plains Manufacturing, Inc. Table of Contents Appendix 5
Adjustments
The ideal operating depth for coulters is1⁄4inch (6 mm)
above opener depth. Although they may have originally
been set to this depth, coulter (and opener) blades wear
with time, and may need adjusting.
Adjusting the coulter depth is accomplished by
re-mounting the coulter blade in one of the six mounting
holes arranged in a staggered pattern in the coulter
bracket.
Refer to Figure 3 and Figure 4
Raise unit mount coulter and install cylinder locks before
working on coulters. Row unit may be fully lowered or
locked up. Do not attempt to move blade when the
current or new position causes it to contact the ground
during adjustment. Be careful around the front end of row
units. Row clear tines and coulter blades may be sharp.
To adjust coulter depth:
1. Dismount row cleaner (if present) to reduce risk of
injury.
2. Determine the present opener and coulter depths.
3. Note which bracket hole the coulter is presently
using.
4. Determine which new hole will position the coulter
closer to the1⁄4inch-above depth. See the table
below. If none, don’t move it.
5. Remove the5⁄8-11 × 4 inch bolt, lock washer and
nut ( in Figure 3).
15
6. Move the blade to the new position. Insert the bolt,
and tighten on the lock washer and nut.
Hole
Number
2
3
5
1
4
6
Depth of (new) coulter blade
relative to (new) opener blades
1 inch (25 mm) above
5
⁄8inch (16 mm) above
1
⁄4inch (6 mm) above
0
3
⁄8inch (9.5 mm) below
3
⁄4inch (19 mm) below
Figure 3
25 Series Unit-Mounted Coulter
2
3
5
1
4
6
15
7
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7. Re-adjust openers, if installed.
If a worn coulter cannot be adjusted to satisfactory
operating depth, replace coulter blade.
2012-08-27 Table of Contents Appendix 204-141M
Coulter Blade Mounting Holes
Figure 4
23288
6UMC Table of Contents Appendix Great Plains Manufacturing, Inc.
Maintenance
Proper servicing and adjustment is the key to the long life
of any farm implement. With careful and systematic
inspection, you can avoid costly maintenance, time and
repair.
®
After using your Yield-Pro
several hours, check all bolts to be sure they are tight.
Check blade height for proper depth.
Blade Replacement
Unit-Mount Coulter for
Sharp Object Hazard:
For operator safety always replace a coulter blade with the
opener raised.
1. Remove bolt , lock washer and nut .
2. Remove coulter blade and hub assembly.
3. Remove the1⁄2inch flange nuts from the hub
assembly and remove the disk blade.
4. Install the new disk blade and secure in place with
the1⁄2inch flange nuts .
5. Install the coulter blade and hub assembly and
adjust the coulter height using the adjustment steps
on page 5.
15 21 19
18
18
19
21
Figure 5
Blade Adjustment
15
18
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204-141M Table of Contents Appendix 2012-08-27
Great Plains Manufacturing, Inc. Table of Contents Appendix 7
Appendix
Torque Values Chart
Bolt
Size
in-tpi
1
⁄4-20
1
⁄4-28
5
⁄16-18
5
⁄16-24
3
⁄8-16
3
⁄8-24
7
⁄16-14
7
⁄16-20
1
⁄2-13
1
⁄2-20
9
⁄16-12
9
⁄16-18
5
⁄8-11
5
⁄8-18
3
⁄4-10
3
⁄4-16
7
⁄8-9
7
⁄8-14
1-8
1-12
1
1
⁄8-7
1
1
⁄8-12
1
⁄4-7
1
1
⁄4-12
1
3
⁄8-6
1
3
1
⁄8-12
1
1
⁄2-6
1
1
⁄2-12
Bolt Head Identification
Grade 2 Grade 5 Grade 8 Class 5.8 Class 8.8 Class 10.9
a
b
d
N-m
ft-lb
7.4 11 16
8.5 13 18
15 24 33
17 26 37
27 42 59
31 47 67
43 67 95
49 75 105
66 105 145
75 115 165
95 150 210
105 165 235
130 205 285
150 230 325
235 360 510
260 405 570
225 585 820
250 640 905
340 875 1230
370 955 1350
480 1080 1750
540 1210 1960
680 1520 2460
750 1680 2730
890 1990 3230
1010 2270 3680
1180 2640 4290
1330 2970 4820
N-m N-m
5.6 8 12
61014 5 811
11 17 25 12 19 27
13 19 27 13 21 29
20 31 44 24 39 53
22 35 49 29 45 62
32 49 70 42 67 93
36 55 78 44 70 97
49 76 105 66 77 105
55 85 120 68 105 150
70 110 155 73 115 160
79 120 170 105 165 230
97 150 210 115 180 245
110 170 240 145 230 300
170 265 375 165 260 355
190 295 420 205 325 450
165 430 605 230 480 665
185 475 670 355 560 780
250 645 910 390 610 845
275 705 995 705 1120 1550
355 795 1290 785 1240 1710
395 890 1440 1270 1950 2700
500 1120 1820 1380 2190 3220
555 1240 2010
655 1470 2380
745 1670 2710
870 1950 3160
980 2190 3560
Bolt Head Identification
Bolt
Size
ft-lb ft-lb ft-lb ft-lb ft-lb
mm x pitch
M 5 X 0.8
M 6 X 1
M 8 X 1.25
M 8 X 1
M10 X 1.5
M10 X 0.75
M12 X 1.75
M12 X 1.5
M12 X 1
M14 X 2
M14 X 1.5
M16 X 2
M16 X 1.5
M18 X 2.5
M18 X 1.5
M20 X 2.5
M20 X 1.5
M24 X 3
M24 X 2
M30 X 3.5
M30 X 2
M36 X 3.5
M36 X 2
a. in-tpi = nominal thread diameter in inches-threads per inch
b. N· m = newton-meters
c. mm x pitch = nominal thread diameter in mm x thread pitch
d. ft-lb = foot pounds
c
5.8 8.8 10.9
N-m N-m N-m
357
71115
17 26 36
18 28 39
33 52 72
39 61 85
58 91 125
60 95 130
90 105 145
92 145 200
99 155 215
145 225 315
155 240 335
195 310 405
220 350 485
280 440 610
310 650 900
480 760 1050
525 830 1150
960 1510 2100
1060 1680 2320
1730 2650 3660
1880 2960 4100
946
Torque tolerance + 0%, -15% of torquing values. Unless otherwise specified use torque values listed above.
2012-08-27 Table of Contents Appendix 204-141M
25199m
25199
8UMC Table of Contents Appendix Great Plains Manufacturing, Inc.
Parts Lists
Unit-Mount Coulter Assembly (204-619K)
18
20
11
16
19
21
10
See page 10.
23
15
18
Figure 6
Unit Mount Coulter Assembly (204-619K)
Callout Part Number Quantity Part Description
10
11
15
16
18
19
20
21
23
204-084S
204-139H
802-060C
802-106C
803-020C
803-021C
804-015C
804-022C
838-482C
1
1
1
4
4
1
4
1
1
GP25S NARROW HUB ASM
UNIT MOUNTED COULTER MOUNT
HHCS 5/8-11X4 GR5
RHSNB 1/2-13X1 1/2 GR5
NUT HEX 1/2-13 PLT
NUT HEX 5/8-11 PLT
WASHER LOCK SPRING 1/2 PLT
WASHER LOCK SPRING 5/8 PLT
DECAL GP PLANTING COMPONENTS
34399
204-141M Table of Contents Appendix 2012-08-27
Great Plains Manufacturing, Inc. Table of Contents Appendix Appendix 9
Coulter Blade Hub Assembly (204-084S)
12
13
22
17
20
18
Figure 7
Coulter Blade Hub Assembly (204-084S)
Callout Part Number Quantity Part Description
12
13
14
17
18
20
22
204-328D
204-329D
800-005C
802-214C
803-020C
804-015C
822-215C
1
2
1
4
4
4
1
GP25S NARROW HUB ASM
NARROW HUB BOLT SPACER
RING FC HOUSING
RHSNB 1/2-13X1 1/4 GR5
NUT HEX 1/2-13 PLT
WASHER LOCK SPRING 1/2 PLT
BRG BALL 1.18IDX2.44OD 5206KPP
14
13
34398
2012-08-27 Table of Contents Appendix 204-141M
10 UMC Table of Contents Appendix Great Plains Manufacturing, Inc.
Coulter Blades
Replacement and alternate coulter blades include
(quantity one per row unit):
a
15in Turbo Packages Part Number
Fluted, 15 inch (50 flutes) 820-331C
1
Turbo, 15 inch (20 flutes) 820-327C
2
Straight, 14 inch 820-259C
3
2 31
Field Results Risk:
When replacing turbo coulter blades make sure that the flutes
are angled forward at the top.
Abbreviations
25S 25 Series ID Inside Diameter
ASM Assembly in inch
BRG Bearing OD Outside Diameter
GP Great Plains PLT Plated
GR5 Grade 5 RHSNB Round Head Shank Neck Bolt
HEX Hexagonal UMC Unit Mount Coulter
HHCS Hex Head Cap Screw (bolt) X by
a
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204-141M Table of Contents Appendix 2012-08-27
Great Plains Manufacturing, Inc. Table of Contents Appendix Appendix 11
Warranty
Warranty
Great Plains Manufacturing, Incorporated warrants to the original pur-
Great Plains Manufacturing, Incorporated warrants to the original
chaser that this spraying equipment will be free from defects in material
purchaser that this seeding equipment will be free from defects in
and workmanship for a period of one year from the date of original pur-
material and workmanship for a period of one year from the date of
chase when used as intended and under normal service and conditions
original purchase when used as intended and under normal service and
for personal use; 90 days for commercial or rental purposes. This War-
conditions for personal use; 90 days for commercial or rental purposes.
ranty is limited to the replacement of any defective part by Great Plains
This Warranty is limited to the replacement of any defective part by Great
Manufacturing, Incorporated and the installation by the dealer of any
Plains Manufacturing, Incorporated and the installation by the dealer of
such replacement part. Great Plains reserves the right to inspect any
any such replacement part. Great Plains reserves the right to inspect
equipment or part which are claimed to have been defective in material
any equipment or part which are claimed to have been defective in
or workmanship.
material or workmanship.
This Warranty does not apply to any part or product which in Great
This Warranty does not apply to any part or product which in Great
Plains’ judgement shall have been misused or damaged by accident or
Plains’ judgement shall have been misused or damaged by accident or
lack of normal maintenance or care, or which has been repaired or al-
lack of normal maintenance or care, or which has been repaired or
tered in a way which adversely aects its performance or reliability, 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 de-
which has been used for a purpose for which the product is not
signed. This Warranty shall not apply if the product is towed at a speed
designed. This Warranty shall not apply if the product is towed at a
in excess of 20 miles per hour.
speed in excess of 20 miles per hour.
Claims under this Warranty must be made to the dealer which originally
Claims under this Warranty must be made to the dealer which
sold the product and all warranty adjustments must by made through
originally sold the product and all warranty adjustments must by made
such dealer. Great Plains reserves the right to make changes in mate-
through such dealer. Great Plains reserves the right to make changes in
rials or design of the product at any time without notice.
materials or design of the product at any time without notice.
This Warranty shall not be interpreted to render Great Plains liable for
This Warranty shall not be interpreted to render Great Plains liable for
damages of any kind, direct, consequential, or contingent, to property.
damages of any kind, direct, consequential, or contingent, to property.
Furthermore, Great Plains shall not be liable for damages resulting from
Furthermore, Great Plains shall not be liable for damages resulting from
any cause beyond its reasonable control. This Warranty does not ex-
any cause beyond its reasonable control. This Warranty does not extend
tend to loss of crops, losses caused by harvest delays or any expense
to loss of crops, losses caused by harvest delays or any expense or loss
or loss for labor, supplies, rental machinery or for any other reason.
for labor, supplies, rental machinery or for any other reason.
No other warranty of any kind whatsoever, express or implied, is
No other warranty of any kind whatsoever, express or implied, is made
made with respect to this sale; and all implied warranties of mer-
with respect to this sale; and all implied warranties of merchantability
chantability and tness for a particular purpose which exceed
and fitness for a particular purpose which exceed the obligations set
the obligations set forth in this written warranty are hereby dis-
forth in this written warranty are hereby disclaimed and excluded from
claimed and excluded from this sale.
this sale.
This Warranty is not valid unless registered with Great Plains Manufac-
This Warranty is not valid unless registered with Great Plains
turing, Incorporated within 10 days from the date of original purchase.
Manufacturing, Incorporated within 10 days from the date of original
purchase.
2012-08-27 Table of Contents Appendix 204-141M
12 UMC Table of Contents Appendix Great Plains Manufacturing, Inc.
204-141M Table of Contents Appendix 2012-08-27
Table of Contents Appendix
Table of Contents Appendix
Table of Contents Appendix
Great Plains Manufacturing, Inc.
Corporate Office: P.O. Box 5060
Salina, Kansas 67402-5060 USA
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