Great Plains DVN8552 User Manual
Table of Contents Index
Assembly Manual
Series VIII 8321, 8324, 8326, 8328,
8333, 8537, 8544, 8548 & 8552
Discovator (Disc & Coulter)
Manufacturing, Inc.
www.greatplainsmfg.com
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!
Illustrations may show optional equipment not supplied with standard unit.
41419
ORIGINAL INSTRUCTIONS
© Copyright 2014 Printed 02/12/2014 550-353Q-ENG
Table of Contents Index
EN
Table of Contents Index
Table of Contents Index
Great Plains Manufacturing, Inc. iii
Table of Contents
Important Safety Information ...................................... 1
Introduction ..................................................................4
Description of Unit ..........................................................4
Models Covered ............................................................. 4
Document Family ...........................................................4
Tools Required ...............................................................4
Pre-assembly Checklist..................................................4
Using This Manual..........................................................5
Definitions................................................................... 5
Shipping Inventory..........................................................6
Unloading ....................................................................... 7
Unpacking Components .............................................7
Unload Smaller Items First .........................................7
Unpacking Boxes .......................................................7
Assembly and Setup Assistance ................................7
Assembly ......................................................................8
Center Brace Bar & Torque Tube............................... 8
Truss & Level Bar.....................................................10
8321-8328, 8537-8544 Center Fold .........................12
8333, 8548-8552 Center Fold ..................................14
Connect Hitch...........................................................16
Install 8321-8324 Wings...........................................18
Install 8321-8324 Wing Fold..................................... 19
Install 8326-8333 Wings...........................................20
Install 8537-8552 Inside Wings ................................22
Install 8537-8552 Wing Fold..................................... 24
Install 8537-8552 Outside Wings..............................26
Install 8537-8552 Outside Wing Fold .......................27
Walking Beam Assembly..............................................27
Install Bearings and Seals........................................27
Install Spindle Sleeves .............................................28
Install Walking Beam................................................28
Install K-Flex............................................................. 29
Install Magnum Shank..............................................29
Gang Hangers ..............................................................30
Install Gang Hangers................................................ 30
Gang Hanger Spring Adjustment..............................30
Install 8321-8537 Gauge Wheel...............................30
Install 8544-8552 Hydraulic Gauge Wheel...............31
Hydraulic Gauge Wheel Spring Adjustment .............31
Install Hydraulic Valves ............................................32
Install Rebound Valve and O-Ring Fittings...............33
Install Depth Control Valve.......................................33
Install Hose Handles.................................................34
Install JIC Fittings.....................................................34
Attach Hose Clamps and Hose wraps ..................... 35
Hydraulic Hose Hookup ........................................... 35
Hose Handles........................................................... 36
Purging Hydraulic System........................................36
Install Gang Assembly ............................................. 38
Straight Gang Depth Indicator Installation ............... 38
Angled Gang Depth Indicator Installation................. 39
Install Depth Guide Decal ........................................ 39
Lights and SMV Assembly ....................................... 40
Rear Hitch Assembly (optional)................................ 42
Completing Setup..................................................... 42
Appendix..................................................................... 43
Torque Values Chart.................................................... 43
Tire Inflation and Warranty........................................... 44
Hydraulic Connectors and Torque ............................... 45
8321-8333 Lift & Gang Layout ..................................... 46
8321-8333 Fold Layout ................................................ 47
8537 Lift & Gang Layout .............................................. 48
8537 Lift & Gang Layout .............................................. 49
8544-8552 Lift & Gang Layout ..................................... 50
8544-8552 Lift & Gang Layout ..................................... 51
8537-8552 Fold Layout ................................................ 52
8537-8552 Fold Layout ................................................ 53
8321D Machine Layout, Disc ....................................... 54
8321C Machine Layout, Coulter .................................. 55
8324D Machine Layout, Disc ....................................... 56
8324C Machine Layout, Coulter .................................. 57
8326D Machine Layout, Disc ....................................... 58
8326C Machine Layout, Coulter .................................. 59
8328D Machine Layout, Disc ....................................... 60
8328C Machine Layout, Coulter .................................. 61
8333D Machine Layout, Disc ....................................... 62
8333C Machine Layout, Coulter .................................. 63
8537D Machine Layout, Disc ....................................... 64
8537D Machine Layout, Disc ....................................... 65
8537C Machine Layout, Coulter .................................. 66
8537C Machine Layout, Coulter .................................. 67
8544D Machine Layout, Disc ....................................... 68
8544D Machine Layout, Disc ....................................... 69
8544C Machine Layout, Coulter .................................. 70
8544C Machine Layout, Coulter .................................. 71
8548D Machine Layout, Disc ....................................... 72
8548D Machine Layout, Disc ....................................... 73
© Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 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.
02/12/2014 550-353Q-ENG
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, Verti-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
iv8321-8552DV Great Plains Manufacturing, Inc.
8548C Machine Layout, Coulter .................................. 74
8548C Machine Layout, Coulter .................................. 75
8552D Machine Layout, Disc ....................................... 76
8552D Machine Layout, Disc ....................................... 77
8552C Machine Layout, Coulter .................................. 78
8552C Machine Layout, Coulter .................................. 79
8321DV HD 3 Bar Spike W/Reel ................................. 80
8321DV S7T Spike Drag.............................................. 81
8321DV S5T HR Spike Drag ....................................... 82
8321DV CH4B Coil Tine .............................................. 83
8324DV HD 3 Bar Spike W/Reel ................................. 84
8324DV S7T Spike Drag.............................................. 85
8324DV S5T HR Spike Drag ....................................... 86
8324DV CH4B Coil Tine .............................................. 87
8326DV HD 3 Bar Spike W/Reel ................................. 88
8326DV S7T Spike Drag.............................................. 89
8326DV S5T HR Spike Drag ....................................... 90
8326DV CH4B Coil Tine .............................................. 91
8328DV HD 3 Bar Spike W/Reel ................................. 92
8328DV S7T Spike Drag.............................................. 93
8328DV S5T HR Spike Drag ....................................... 94
8328DV CH4B Coil Tine .............................................. 95
8333DV HD 3 Bar Spike W/Reel ................................. 96
8333DV S7T Spike Drag.............................................. 97
8333DV S5T HR Spike Drag ....................................... 98
8333DV CH4B Coil Tine .............................................. 99
8537DV HD 3 Bar Spike W/Reel ............................... 100
8537DV HD 3 Bar Spike W/Reel ............................... 101
8537DV S7T Spike Drag............................................ 102
8537DV S7T Spike Drag............................................ 103
8537DV S5T HR Spike Drag ......................................104
8537DV S5T HR Spike Drag ......................................105
8537DV CH4B Coil Tine.............................................106
8537DV CH4B Coil Tine.............................................107
8544DV HD 3 Bar Spike W/Reel ................................108
8544DV HD 3 Bar Spike W/Reel ................................109
8544DV S7T Spike Drag ............................................110
8544DV S7T Spike Drag ............................................111
8544DV S5T HR Spike Drag ......................................112
8544DV S5T HR Spike Drag ......................................113
8544DV CH4B Coil Tine.............................................114
8544DV CH4B Coil Tine.............................................115
8548DV HD 3 Bar Spike W/Reel ................................116
8548DV HD 3 Bar Spike W/Reel ................................117
8548DV S7T Spike Drag ............................................118
8548DV S7T Spike Drag ............................................119
8548DV S5T HR Spike Drag ......................................120
8548DV S5T HR Spike Drag ......................................121
8548DV CH4B Coil Tine.............................................122
8548DV CH4B Coil Tine.............................................123
8552DV HD 3 Bar Spike W/Reel ................................124
8552DV HD 3 Bar Spike W/Reel ................................125
8552DV S7T Spike Drag ............................................126
8552DV S7T Spike Drag ............................................127
8552DV S5T HR Spike Drag ......................................128
8552DV S5T HR Spike Drag ......................................129
8552DV CH4B Coil Tine.............................................130
8552DV CH4B Coil Tine.............................................131
Index ..........................................................................133
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. 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.
Use Adequate Lifting Means
The frame sections and gangs of this machine are
extremely heavy. If using multiple lifters, make sure each
is rated for at least its share of the load.
> 14,000
POUNDS
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.
02/12/2014 550-353Q-ENG
2 8321-8552DV Great Plains Manufacturing, Inc.
Be Familiar with Safety Decals
▲ Read and understand the “Safety Decals” section of the
Operators Manual.
▲ Read all instructions noted on the decals.
▲ Keep decals clean. Replace damaged, faded and illegible
decals.
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 hear-
ing impairment or hearing loss, wear suitable hearing protection such as earmuffs or earplugs.
▲ Because operating equipment safely requires your full
attention, avoid wearing entertainment headphones while
operating machinery.
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 driv-
ing 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.
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Important Safety Information 3
Shutdown and Storage
▲ Lower implement, put tractor in park, turn off engine, and
remove the key.
▲ Secure Discovator using blocks and supports provided.
▲ Detach and store Discovator in an area where children nor-
mally do not play.
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 for 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.
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 machine functions.
▲ Operate machinery from the driver’s seat only.
▲ Do not leave machine unattended with tractor engine run-
ning.
▲ Do not stand between the tractor and machine during
hitching.
▲ Keep hands, feet and clothing away from power-driven
parts.
▲ Wear snug-fitting clothing to avoid entanglement with mov-
ing parts.
▲ Watch out for wires, trees, etc., when folding and raising
machine. Make sure all persons are clear of working area.
02/12/2014 550-353Q-ENG
4 8321-8552DV Great Plains Manufacturing, Inc.
Introduction
The Discovator has been designed with care and built by
skilled workers using quality materials. Proper setup,
maintenance, and safe operating practices will help the
customer get years of satisfactory use from the machine.
Description of Unit
The Series VIII, 8321-8552DV Discovator is a three or
five-section field finishing, one-pass tillage tool. Working
width ranges from 21 to 52 feet. The implement is
designed to combine discing/slicing, cultivating, harrowing and herbicide incorporation in a single pass. Various
finishing attachments are available to customize your tillage and residue requirements for your operation
Models Covered
8321DV 21-Foot 3-section
8324DV 24-Foot 3-section
8326DV 26-Foot 3-section
8328DV 28-Foot 3-section
8333DV 33-Foot 3-section
8537DV 37-Foot 5-section
8544DV 44-Foot 5-section
8548DV 48-Foot 5-section
8552DV 52-Foot 5-section
Document Family
550-353Q-ENG Assembly Manual (this document)
550-353Q Pre-Delivery Manual
550-353M Operator Manual
550-353P Parts Manual
Tools Required
• Basic Hand Tools
• Torque Wrench
• Fork Truck, Overhead Hoist or Loader
Figure 1
Discovator
41645
Pre-assembly Checklist
1. Before assembling, read and understand “Important
Safety Information” in front part of this manual.
2. Have at least two people on hand while assembling.
550-353Q-ENG 02/12/2014
3. Make sure area is level and free of obstructions
(preferably an open concrete area).
4. Have all major components
5. Have all fasteners and pins shipped with Discovator.
Great Plains Manufacturing, Inc. Introduction 5
Using This Manual
This manual was written to help you assemble and prepare the new machine for the customer. The manual
includes instructions for assembly and setup. Read this
manual and follow the recommendations for safe, efficient and proper assembly and setup.
An operator’s and parts manual is also provided with the
new machine. Read and understand “Important Safety
Information” and “Operating Instructions” in the operator’s manual before assembling the machine. Refer to
the parts manual for proper part’s identification. As a reference, keep the operator’s and part’s manual on hand
while assembling.
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.
A crucial point of information related to the preceding 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.
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
R
F
U
B
L
D
R
L
Figure 2
Right / Left
41542
02/12/2014 550-353Q-ENG
6 8321-8552DV Great Plains Manufacturing, Inc.
Shipping Inventory
The discovator will be shipped unassembled as shown
in a big shipping rack and shipping boxes on pallets.
The only parts that will be assembled are the disc or
coulter gang assemblies and reel attachment assemblies. The reel attachments (if equipped) will be banded
together with the gang assemblies on pallet.
Refer to Figure 3
• All frame sections, hitch and torque tubes will be
shipped in shipping container.
Refer to Figure 4
• Shank parts, small parts and bolts will be shipped in
boxes. Rear attachment big parts will be banded to
attachment smaller parts box.
Shipping containers do not need to be returned to Great
Plains.
Figure 3
Shipping Rack
Figure 4
Shipping Boxes
41647
41621
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Introduction 7
Unloading
Once everything is unloaded from “storage pod” you may
proceed with taking parts out of shipping containers.
Carefully move everything to level site and prepare to un
pack items.
Unpacking Components
Be sure you have read and understood the Important
Safety Information, starting on page 1 of this manual,
before you start unpacking componets.
Centering componets:
Be sure and center fork truck or chains (overhead hoist)
on componets so they won’t slide and cause injury.
Carefully un-band componets.
Now unload individual componets one at a time using a
fork truck or overhead hoist.
Move each component out of the way so you have plenty
of room to remove the next one.
Unload Smaller Items First
Unloading the frames is a potentially dangerous operation.
Reduce risk and complication by first unloading
1. the tire wheel assemblies,
2. the smaller items
Place these components well out of the maneuvering
area needed for unloading the gang assemblies and
frames.
3. Carefully unload the Frames and hitch out of shipping rack
Unpacking Boxes
1. Carefully remove banding and lids from boxes.
2. Locate and identify all componets before assembling.
Assembly and Setup Assistance
To order additional copies of pre-delivery instructions or
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
the assembly or setup questions, assistance is available.
Contact:
Product Support
Great Plains Mfg. Inc., Service Department
PO Box 5060
Salina, KS 67402-5060
(800)255-9215
02/12/2014 550-353Q-ENG
8 8321-8552DV Great Plains Manufacturing, Inc.
Assembly
Center Brace Bar & Torque Tube
Refer to Figure 5
1. Once the center Frame has been uncrated and put
on stands, the torque tube maybe installed.
2. Carefully raise the torque tube with an overhead
hoist and secure with 1 1/4 x 6 pins , 3/8 x 2 1/4 Gr.
1
2
8 hex bolts and 3/8 top lock nut.
3. Install walking beams , See “Walking Beam
3
Assembly” on page 27
4. Install pre-assembled hub assembly using 5/16 x
4
4 bolts (models 8321-8537) or 1/2 x 4 1/2 bolts
(models 8544-8552) , secure with 1/2 lock washer
5
and 1/2 nut.
5. Attach the tire/wheel assemblies to hub assembly
and secure with lug nuts .
4 7
6
6. Now install the appropriate cylinders , see hydrau-
8
lics section of “Parts Manual” for correct size, using 1
x 3 11/16 pins , 1.5 x 1.0 x.075 machine washers
9
and 3/16 x 2 cotter pins.
7. Install cylinder transport locks to cylinders
10 8
using the 3/8 x 3 pins and clip pin.
Note: Install 3/4 x 2 Gr. 5 hex bolts , back to front as
12
shown.
8. Carefully move center brace bar into position with
11
fork truck or overhead hoist. Secure with 3/4 x 2 Gr.
5 hex bolts , 3/4 lock washers and 3/4 hex nuts.
12
9. All bolts may be tightened to specs, See “Torque
Values Chart” on page 43. Attach plastic end caps
to all open ends of 4 x 3 tube.
13
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 9
U
R
B
F
L
D
Cylinder Transport Lock
Install Bolts from
Back to Front
as Shown
Shown in Field Position
Cylinder Transport Lock
Shown in Transport
Position
12
10
13
2
9
8
1
11
Figure 5
Center Brace Bar & Torque Tube
5
3
4
6
7
41648
02/12/2014 550-353Q-ENG
10 8321-8552DV Great Plains Manufacturing, Inc.
Truss & Level Bar
Refer to Figure 6
10. Now the center frame trusses may be installed
using 5/8 x 1 1/2 Gr. 5 hex bolts , secure with 5/8
1
2
lock washers, 5/8 hex nuts and 3/4 x 2 Gr. 5 hex
bolts , secure with 3/4 lock washers and lock nuts.
3
11. Attach the h-bracket mounting plate with 3/4 x 2
Gr. 5 hex bolts , secure with 3/4 lock washers and
3
4
lock nuts
12. Mount the bottom side of the h-bracket using the 1
x 2 29/64 pins , 1.5 x 1.0 x.075 machine washers
6
5
and 3/16 x 2 cotter pins.
13. Attach the level bar slide tube assembly into the
top side of the h-bracket , secure with 1 x 9 Gr. 8
hex bolt and 1 nylon lock nut.
8
5
7
Note: Install level bar with depth stop tube pin to left
9
side of machine.
14. Now slide the front of the level bar over the back
side of the level bar slide tube assembly , secure
with a 3/4 x 5 1/2 Gr. 5 hex bolt and 3/4 nylock
9
7
10
nut.
15. Attach rear of level bar to the torque tube with the
1 x 6 Gr. 8 special hex bolt and 1 nylon lock nut.
16. Mount the level bar cross tube to the level bar
side plates with 5/8 x 1 1/2 Gr. 5 hex bolts , secure
9
11
12 9
2
with 5/8 lock washers and 5/8 nuts.
17. All bolts may be tightened to specs, See “Torque
Values Chart” on page 43.
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 11
U
R
B
F
L
D
12
2
11
9
10
2
Be Sure to Install Depth
Stop Mount on Left Side
7
8
5
1
2
3
2
2
1
4
6
Figure 6
Truss & Level Bar Assembly
02/12/2014 550-353Q-ENG
41649
12 8321-8552DV Great Plains Manufacturing, Inc.
8321-8328, 8537-8544 Center Fold
Refer to Figure 7
18. Attach brace bar truss (models 8537 & 8544) to
1
front of center brace bar, outside plates with 3/4 x 2
, 3/4 lock washers and 3/4 nuts, inside plates with
2
5/8 x 1 1/2 bolts , 5/8 lock washers and nuts.
19. Mount front and rear fold brackets to center
frame with 5/8 x 1 1/2 bolts , 5/8 lock washers and
5
3 4
5
nuts.
20. Attach inside plate of center wing stop , using 5/8 x
1 1/2 bolts , 5/8 lock washers and nuts.
5
21. Attach outside plate of center wing stop , with 5/8 x
3 1/32 x 5 1/2 u-bolts , 5/8 lock washers and nuts.
7
6
6
22. Insert the 1/2 x 4 1/2 pin w/keepers into round
tubes on rear of wing stop .
23. Mount cylinder rest pads , (Models 8321-8324
6
9
8
only) to center frame, with 1/2 x 3 1/32 x 5 u-bolts ,
1/2 lock washers and 1/2 nuts.
Note: Position cylinder rest pad 12” from inside of
9
outer tube to plate on pad as shown.
24. All bolts may be tightened to specs, See “Torque
Values Chart” on page 43.
10
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 13
U
R
F
B
Models 8537-8544 Only
L
D
Models 8321-8324 Only
4
6
2
1
Models 8537-8544 Only
3
Models 8326-8328,
8537-8544 Only
5
3
5
5
8
9
6
10
Models 8323-8328 Only
7
8
6
Figure 7
8321-8328, 8537-8544 Center Fold
02/12/2014 550-353Q-ENG
41650
14 8321-8552DV Great Plains Manufacturing, Inc.
8333, 8548-8552 Center Fold
Refer to Figure 8
25. Mount front and rear fold brackets to center
frame with 5/8 x 1 1/2 bolts , 5/8 lock washers and
1 2
3
nuts.
26. Attach plates of front wing stop , with 5/8 x 3 1/32 x
4 1/2 u-bolts , 5/8 lock washers and nuts. Position
5
4
plates of wing stop over truss mounting tube as
shown.
27. Insert the 1/2 x 4 1/2 pin w/keepers into round
tubes on rear of wing stop .
4
6
28. Attach rear wing stop on center frame tubes as
shown, with 5/8 x 3 1/32 x 5 1/2 u-bolts , 5/8 lock
7
8
washers and nuts.
29. Mount the SMV sign to wing stop, with 1/4 x 3/4
pan head screws , 1/4 lock washers and 1/4 nuts.
9
10
30. All bolts may be tightened to specs, See “Torque
Values Chart” on page 43.
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 15
U
R
B
F
D
L
Models 8548-8552 Only
2
10
3
9
Models 8548-8552 Only
7
3
1
6
4
Models 8333 Only
5
4
Figure 8
8333, 8548-8552 Center Fold
8
Position Wing Stop with One
U-Bolt on each Side of Truss
Mounting Tube
42327
02/12/2014 550-353Q-ENG
16 8321-8552DV Great Plains Manufacturing, Inc.
Connect Hitch
Refer to Figure 9
31. Attach hitch to center brace bar using 1 1/4 x 7 Gr.
8 hex bolt and top lock nut.
32. Mount square jack to front mount on hitch with
1
2
3 1
pin provided with jack.
• Use jack to help support front of hitch for rest of hitch
assembly.
33. Attach rear of turnbuckle assembly to h-bracket
with 1 x 9 Gr. 8 hex bolt and 1 nylon lock nut.
5
34. Attach front of turnbuckle assembly to hitch
using 1 x 3 3/8 pin , 1.5 x 1.0 x.075 machine
6
4
4 1
washer and 3/16 x 2 cotter pin.
35. Slip holes in turnbuckle wrench over pegs on
inside (left) side of hitch .
36. Align holes in hitch base with holes in front of hitch
.
1
1
8
7
37. Align holes in safety chain support with holes on
left side of hitch , secure with 1 x 8 Gr. 8 special
hex bolts , 1 lock washers and 1 nut.
10
38. Install safety chain on bottom side of hitch ,
1
12 1
secure with 1 x 7 Gr. 8 hex bolt , 1 3/4od x 1 1/32
id x 1/2 round tube , fold roller , 1 lock washer
13 14
9
11
and 1 nut.
39. Route safety chain through safety chain support
.
9
40. Mount spring hose loop to top side of hitch ,
with 1/2 x 1 1/2 bolt , 1/2 flat washer, 1/2 lock
12
15 1
16
washer and 1/2 nut.
41. Mount the manual pack to hitch with 1/4 x 3/4
pan screws , rubber spacers , 1/4 lock washers
18 19
17 1
and 1/4 nuts.
42. All bolts may be tightened to specs, See “Torque
Values Chart” on page 43.
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 17
U
R
B
F
L
D
5
2
18
17
15
4
16
6
2
19
11
1
7
10
9
8
13
3
14
12
Figure 9
Hitch Assembly
02/12/2014 550-353Q-ENG
41651
18 8321-8552DV Great Plains Manufacturing, Inc.
Install 8321-8324 Wings
Refer to Figure 10
43. Carefully align holes in wing frame LH with holes in
center frame. Secure with 1 x 7 Gr. 8 special thread
hex bolt and 1 nylon lock nut.
Note: Be sure and install the 1 x 6 hex bolts as shown
44. Attach wing brace to the front of the wing frame LH
with 3/4 x 2 Gr. 5 hex bolts , 3/4 lock washers
1 4
and 3/4 hex nuts.
45. Install 1 x 6 Gr. 5 hex bolts and 1 nylon lock nuts
through hinge in center wing brace.
2
with arrows with head against plate on side of
hinge.
3
2
1
2
2
R
F
4
U
B
L
D
1
3
Refer to Figure 11
Note: If you have a model 8324, go to Refer to Figure 12.
46. Align holes in wheel arm L , secure with 1 1/4 x 6
pins , 3/8 x 2 1/4 hex bolts and 3/8 top lock nuts.
6 7
47. Model 8321, align hole in 6-bolt spindle assembly
with wheel arm tube, secure with 5/16 x 2 13/16 clevis
pin and 1/8 x 1 cotter pin, bend over to secure.
9
48. Attach tire/wheel assembly with lug nuts .
49. Repeat same procedure for right wing.
Refer to Figure 12
50. Align holes in wheel arm L , secure with 1 1/4 x 6
pins , 3/8 x 2 1/4 hex bolts and 3/8 top lock nuts.
13 14
51. Install walking beams , See “Walking Beam
Assembly” on page 27.
52. Model 8324, align hole in 6-bolt spindle assembly
with tube of walking beam, secure with 5/16 x 2 13/16
clevis pin and 1/8 x 1 cotter pin, bend over to
secure.
53. Attach tire/wheel assembly with lug nuts .
54. Install hub/wheel on other side of walking beam .
55. Repeat same procedure for right wing.
56. Tighten all bolts to specs, See “Torque Values
Chart” on page 43.
16
5
8
10 11
12
19
15
17 18
19
R
F
11
U
D
B
L
R
F
13
42330
U
B
L
D
42330
Figure 10
8321-8324 Wing
6
7
10
5
9
Figure 11
8321 Hub/Wheel
8
14
12
16
17
18
19
15
Figure 12
8324 Hub/Wheel
42330
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 19
Install 8321-8324 Wing Fold
Refer to Figure 13
57. Attach 1 1/4 x 9 1/2 eye bolt , secure with 1 1/4 jam
nuts (one on each side of plate).
2
58. Mount 3.5 x 8 x 1.25 cylinder to eye bolt and
wheel arm L with 1 x 3 11/16 pins , 1.5 x 1.0 x.075
machine washers and 3/16 x 2 cotter pins.
59. Mount rocker bracket to wing plate with 3/4 x 3 Gr.
5 hex bolts , 3/4 lock washers and 3/4 hex nuts.
60. Attach one end of rocker to rocker bracket using
1 x 3 3/8 pin , 1.5 x 1.0 x.075 machine washer and
3/16 x 2 cotter pin.
61. Bolt the connecting link , with 1 x 3 Gr. 5 bolts , 1
lock washers and 1 nuts.
62. Attach base end of 3.5 x 24 x 1.25 cylinders to
center fold bracket with 1 x 3 11/16 pin , 1.5 x 1.0
x.075 machine washer and 3/16 x 2 cotter pin.
Note: Do not attach rod end of fold cylinders until fold sys-
tem has been purged, See “Purging Hydraulic
System” on page 36.
63. Repeat same procedure for right wing.
64. Tighten all bolts to specs, See “Torque Values
Chart” on page 43.
6
8
5
1
3 1
4
7 5
910
11
4
R
F
11
7
4
8
6
U
B
L
D
Figure 13
8321-8324 Wing Fold
Model8321Does Not
Use Connecting Link.
9
10
5
4
3
1
2
41665
02/12/2014 550-353Q-ENG
20 8321-8552DV Great Plains Manufacturing, Inc.
Install 8326-8333 Wings
Refer to Figure 14
65. Carefully align holes in wing frame LH with holes
1
in center frame. Secure with 1 x 7 Gr. 8 special
thread hex bolt and 1 nylon lock nut.
Note: Be sure and install the1x6hexbolts as shown
2
2
with arrows with head against plate on side of
hinge.
66. Align holes in wheel arm L , secure with 1 1/4 x 6
pin , 3/8 x 2 1/4 hex bolts and 3/8 top lock nuts.
4 5
67. install walking beams , See “Walking Beam
3
6
Assembly” on page 27.
68. Align hole in 6-bolt spindle assembly , secure with
5/16 x 2 13/16 clevis pin and 1/8 x 1 cotter pin,
8
7
bend over to secure.
69. Attach tire/wheel assembly with lug nuts .
70. Attach wing brace to the front of the wing frame
LH with 3/4 x 2 Gr. 5 hex bolts , 3/4 lock wash-
112
11
910
ers and 3/4 hex nuts.
71. Install 1 x 6 Gr. 5 hex bolt and 1 nylon lock nut
2
through hinge in center wing brace.
72. Attach 1 1/4 x 9 1/2 eye bolt , secure with 1 1/4
jam nut (one on each side plate).
14
13
73. Mount 3.25 x 8 x 1.25 cylinder (models 8326-8328)
or 3.75 x 8 x 1.38 (models 8333) to eye bolt
and wheel arm L with 1 x 3 11/16 pins , 1.5 x
3
15 13
16
1.0 x.075 machine washers and 3/16 x 2 cotter pins.
74. Mount wing fold bracket to wing with 3/4x5Gr.5
hex bolts , 3/4 lock washers and 3/4 hex nuts, 5/8
18
x 3 1/32 x 5 1/2 u-bolts , 5/8 lock washers and 5/8
17
19
hex nuts.
75. Attach base end of4x30x1.5cylinders to center
fold bracket with 1 x 3 11/16 pin , 1.5 x 1.0
21
20
16
x.075 machine washer and 3/16 x 2 cotter pin.
Note: Do not attach rod end of fold cylinders until fold
system has been purged, See “Purging Hydrau-
lic System” on page 36.
76. Repeat same procedure for right wing.
77. Tighten all bolts to specs, See “Torque Values
Chart” on page 43.
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 21
U
R
B
16
21
F
L
D
20
17
18
15
5
12
4
16
1
14
2
13
3
8
9
11
19
6
10
7
Figure 14
8326-8333 Wing
02/12/2014 550-353Q-ENG
41653
22 8321-8552DV Great Plains Manufacturing, Inc.
Install 8537-8552 Inside Wings
Refer to Figure 15
78. Carefully align holes in wing frame LH with holes
1
in center frame. Secure with 1 x 7 Gr. 8 special
thread hex bolt and 1 nylon lock nut.
Note: Be sure and install the1x6hexbolts as shown
2
2
with arrows with head against plate on side of
hinge.
79. Attach wheel arm L , to wing frame secure with 1
1/4 x 6 pin , 3/8 x 2 1/4 hex bolts and 3/8 top lock
4 5
3 1
nuts.
80. Install walking beams , See “Walking Beam
6
Assembly” on page 27.
81. Align hole in 6-bolt spindle assembly , secure with
5/16 x 2 13/16 clevis pin and 1/8 x 1 cotter pin,
8
7
bend over to secure.
82. Attach tire/wheel assembly with lug nuts .
910
83. Attach wing brace to the front of the wing frame
LH with 3/4 x 2 Gr. 5 hex bolts , 3/4 lock wash-
112
11
ers and 3/4 hex nuts.
84. Attach wing lock mount with 1/2 x 3 1/32 x 5 ubolts , 1/2 lock washers and 1/2 nuts.
14
13
Note: See layout section for proper placement of lock
mount .
85. Mount automatic wing latch , using 3/4 x 4 1/2 hex
bolt and 3/4 lock nut.
86. Attach bolt-on stub , to wing frame plate, using 5/8
x 1 1/2 hex bolts , 5/8 lock washers and 5/8 nuts.
13
15
16
17
18
87. Repeat same procedure for right wing.
88. Tighten all bolts to specs, See “Torque Values
Chart” on page 43.
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 23
U
R
B
F
L
D
2
Model8548&8552 Only.
13
15
12
13
5
16
1
14
4
2
17
18
3
11
8
9
10
9
7
6
Figure 15
8537-8552 Wing
02/12/2014 550-353Q-ENG
41655
24 8321-8552DV Great Plains Manufacturing, Inc.
Install 8537-8552 Wing Fold
Refer to Figure 16
89. Attach 1 1/4 x 9 1/2 eye bolt , secure with 1 1/4 jam
nuts (one on each side of plate).
2
90. Mount cylinder to eye bolt and wheel arm L with
1 x 3 11/16 pins , 1.5 x 1.0 x.075 machine washers
3 1
4
1
and 3/16 x 2 cotter pins.
Note: See hydraulic section of “Part’s Manual” for proper
cylinders.
91. Mount front fold bracket to wing plate with 3/4 x 3
Gr. 5 hex bolts , 3/4 x 5 1/2 hex bolt ,3/4 lock
6 7
5
washers and 3/4 hex nuts, 5/8 x 3 1/32 x 5 1/2 ubolts , 5/8 lock washers and 5/8 nuts.
8
92. Mount rear fold bracket to wing plate with 3/4 x 3
Gr. 5 hex bolts , 3/4 lock washers and 3/4 hex nuts,
6
5/8 x 3 1/32 x 5 1/2 u-bolts , 5/8 x 2 hex bolts , 5/
9
810
8 lock washers and 5/8 nuts.
93. Attach wing rest , on top of front fold bracket ,
wing rest plate , bottom of fold bracket, with 1/2 x 4
1/2 hex bolts , 1/2 lock washers and nuts.
11 5
12
13
Note: See layout section for proper placement of wing
rest pad .
94. Bolt the 180-degree fold bracket , with 5/8 x 2 hex
bolts , 5/8 x 3 1/32 x 5 1/2 u-bolts , 5/8 lock
11
14
10 8
washers and 5/8 nuts.
95. Attach base end of4x30x1.5cylinders to center
fold bracket with 1 x 3 11/16 pin , 1.5 x 1.0 x.075
4
15
machine washer and 3/16 x 2 cotter pin.
96. Do not attach rod end of fold cylinders until fold system has been purged, See “Purging Hydraulic Sys-
tem” on page 36.
97. Repeat same procedure for right wing.
98. Tighten all bolts to specs, See “Torque Values
Chart” on page 43.
550-353Q-ENG 02/12/2014
Great Plains Manufacturing, Inc. Assembly 25
U
R
B
4
16
F
L
D
15
15
4
6
9
10
13
14
7
6
11
12
3
8
5
4
2
1
8
8
Figure 16
8537-8552 Wing Fold
02/12/2014 550-353Q-ENG
14
Models8537-8552Coulter Only.
10
41654
26 8321-8552DV Great Plains Manufacturing, Inc.
Install 8537-8552 Outside Wings
Refer to Figure 17
99. Attach outside wing hinges , to wing frame and
wing brace , with 1 x 5 1/2 Gr. 5 hex bolt , 1 nylon
lock, 5/8 3 1/32 x 5 1/2 u-bolts , 5/8 lock washers
and 5/8 nuts.
100.Attach wing brace to the front of the wing frame LH
with 3/4 x 2 Gr. 5 hex bolts , 3/4 lock washers, 3/4
2 6
hex nuts and 1 x 6 Gr. 8 hex bolt and 1 nylon lock
nut.
101.Carefully align holes in wing hinges with holes in
inside wing fold brackets. Secure rear two hinges with
1 1/4 x 8 Gr. 8 hex bolt and 1 1/4 nylon lock nut,
front hinge with 1 x 6 Gr. 8 hex bolt and 1 nylon lock
nut.
102.Repeat same procedure for right wing.
Refer to Figure 18
Note: For Models 8548-8552, See “8548-8552 Outside
Wing Transport” on page 26
103.Attach holes in wheel arm L , to wing frame ,
secure with 1 1/4 x 6 pin , 3/8 x 2 1/4 hex bolts
and 3/8 top lock nuts.
104. Align hole in 6-bolt spindle assembly , to wheel
arm , secure with 5/16 x 2 1/16 pin and 1/8 x 1
10 14
cotter pin.
105.Attach pre-assembled tire/wheel assembly with
lug nuts .
106.Repeat same procedure for right wing.
3 5
3
16
1 2
4
7
1
8
9
10 2
11 12
13
15
R
F
5
1
8
9
7
4
1
3
Models8537-8552
Coulter Only.
4
Figure 17
8537-8552 Outside Wing
U
B
12
L
D
10
13
Figure 18
8537-8544 Outside Wing Transport
Models8537-8552
Coulter Only.
6
U
R
F
D
11
2
14
15
16
2
B
L
41666
42331
Refer to Figure 19
107.Attach holes in wheel arm L , to wing frame ,
secure with 1 1/4 x 6 pin , 3/8 x 2 1/4 hex bolts
and 3/8 top lock nuts.
108.Install walking beams , See “Walking Beam
Assembly” on page 27.
109. Align hole in 6-bolt spindle assembly , to walking
beam , secure with 5/16 x 2 13/16 clevis pin and
19 20
1/8 x 1 cotter pin, bend over to secure.
110.Attach pre-assembled tire/wheel assembly with lug
nuts .
16
111.Repeat same procedure for right wing.
112.Tighten all bolts to specs, See “Torque Values Chart”
on page 43.
550-353Q-ENG 02/12/2014
17 2
11 12
19
18
15
R
F
12
17
U
D
19
B
L
15
8548-8552 Outside Wing Transport
18
Figure 19
20
11
2
15
16
42332
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