GREAT PLAINS Terra Max HT1100-20 User manual

Manufacturing, Inc.
www.greatplainsmfg.com
© Copyright 2020 Printed 2020-07-29 586-831Q-ENG
EN
Table of Contents Index
Table of Contents Index
ORIGINAL INSTRUCTIONS
Assembly Manual
HT1100-20 - HT1100-30
Terra Max
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.
TP-69605

Table of Contents Index
Table of Contents Index

HT1100-20 - HT1100-30 Cover Index Table of Contents
Great Plains | 586-831Q-ENG | 07/29/2020 Cover Index iii
© Copyright 2020 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.
Trademarks of Great Plains Manufacturing, Inc. include: AccuShot, Max-Chisel, Row-Pro,
Singulator Plus, Short Disk, Swath Command, Terra-Tine, Ultra-Chisel, and X-Press.
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, Whirlfilter, and 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
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
Further Assistance .....................................................7
Assembly.................................................................................8
Center Frame & Lift Assembly ...................................8
Center Transport 20 & 25.........................................10
Center Transport 30 .................................................10
Level Bar & Fold Brackets ...............................................12
Hitch ................................................................................14
Valve Brackets & Valves .................................................16
Valves & Hoses ...............................................................16
Depth Stop & Angle Gauge......................................17
Wing & Lift Assembly ...............................................18
Wing Transport.........................................................20
Attach Hose Clamps and Hose Wraps.....................20
Hydraulic Hose Hookup............................................21
Hose Handles...........................................................21
Purging Hydraulic System ........................................22
Center Gang Bars ....................................................24
Wing Gang Bar.........................................................26
Front Light Assembly................................................28
Rear Lights ...............................................................29
Splitter Switch...........................................................30
HT1100-30 Wing Fold Assist....................................31
Proximity Sensor Adjustment ...................................32
Gang Cylinder Purging .............................................32
Hose Routing Hitch ..................................................33
Gauge Wheel ...........................................................33
Rolling Harrow (optional)..........................................34
Hydraulic Reel Down Pressure Kit ...........................35
Weight Package Assembly (Optional)......................37
Appendix - Reference Information ......................................38
Torque Values Chart .......................................................38
Tire Inflation Chart ...........................................................39
Hydraulic Connectors and Torque...................................39
Hydraulic Lift Layout........................................................40
HT1100-20 & 25 Hydraulic Fold Layout ..........................41
HT1100-30 Hydraulic Fold Layout...................................42
HT1100-20 & 25 Hydraulic Gang Angle Layout ..............43
HT1100-30 Hydraulic Gang Angle Layout.......................44
HT1100-20 & 25 Reel Hydraulic Layout..........................45
HT1100-30 Reel Hydraulic Layout ..................................46
HT1100-20 Machine Layout ............................................47
HT1100-25 Machine Layout ............................................48
HT1100-25 Machine Layout ............................................49
HT1100-30 Machine Layout ............................................50
HT1100-30 Machine Layout ............................................51
HT1100-20 Double Reel/Rolling Harrow Layout .............52
HT1100-20 Double Reel/Rolling Harrow Layout .............53
HT1100-25 Double Reel/Rolling Harrow Layout .............54
HT1100-25 Double Reel/Rolling Harrow Layout .............55
HT1100-30 Double Reel/Rolling Harrow Layout .............56
HT1100-30 Double Reel/Rolling Harrow Layout .............57
HT1100-20 Single Reel/Rolling Harrow Layout...............58
HT1100-20 Single Reel/Rolling Harrow Layout...............59
HT1100-25 Single Reel/Rolling Harrow Layout...............60
HT1100-25 Single Reel/Rolling Harrow Layout...............61
HT1100-30 Single Reel/Rolling Harrow Layout...............62
HT1100-30 Single Reel/Rolling Harrow Layout...............63

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HT1100-20 - HT1100-30 Table of Contents Index

HT1100-20 - HT1100-30 Table of Contents Index Important Safety Information
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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.
Prepare for Emergencies
Be prepared if a fire starts
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctor, ambulance, hospital
and fire department near phone.
Be Familiar with Safety Decals
Read and understand the “Safety Decals” section of the
Operators Manual.
Read all instructions noted on the decals.
Keep decals clean. Replace damaged, faded and illegible
decals.
> 14,000
POUNDS

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HT1100-20 - HT1100-30 Table of Contents Index Important Safety Information
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 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
driving on public roads.
Use lights and devices provided with implement.
Keep Riders Off Machinery
Riders obstruct the operator’s view. Riders could be struck by
foreign objects or thrown from the machine.
Never allow children to operate equipment.
Keep all bystanders away from machine during operation.
Shutdown and Storage
Lower implement, put tractor in park, turn off engine, and
remove the key.
Secure Terra Max using blocks and supports provided.
Detach and store Terra Max in an area where children
normally do not play.

HT1100-20 - HT1100-30 Table of Contents Index Important Safety Information
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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
running.
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
moving parts.
Watch out for wires, trees, etc., when folding and raising
machine. Make sure all persons are clear of working area.

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HT1100-20 - HT1100-30 Table of Contents Index Introduction
Introduction
The Terra Max 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 HT1100-20 - HT1100-30 Terra Max is a three section
“hybrid” tillage tool. Working width ranges from 18 to 30 feet.
The implement is designed to cut and size residue, till soil for
faster seedbed warming, break up soil crust on hard dried
fields while eliminating compaction layers. The front and rear
gangs may be adjusted from 0-8 degree angle, depending on
the aggressiveness desired. Various finishing attachments are
also available to further smooth, redistribute residue, kill
weeds, and break clods.
Models Covered
Document Family
Tools Require d
•Basic Hand Tools
•Torque Wrench
•Fork Truck, Overhead Hoist or Loader
Pre-assembly Checklist
Before assembling, read and understand “Important
Safety Information” in front part of this manual.
Have at least two people on hand while assembling.
Make sure area is level and free of obstructions
(preferably an open concrete area).
Have all major components
Have all fasteners and pins shipped with machine.
HT1100-20 20’ (7.5in) spacing
HT1100-25 25’ (7.5in) spacing
HT1100-30 30’ (7.5in) spacing
586-831Q Pre-Delivery Manual
586-831M Operator Manual
586-831P Parts Manual
586-831Q-ENG Assembly Manual (this document)
Figure 1
HT110-25 Terra Max
TP-69605

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Using This Manual
This manual was written to help you assemble and pre-
pare the new machine for the customer. The manual
includes instructions for assembly and setup. Read this
manual and follow the recommendations for safe, effi-
cient 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 oper-
ator’s manual before assembling the machine. Refer to
the parts manual for proper part’s identification. As a ref-
erence, 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.
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.
L
R
Figure 2
Right / Left
TP-69605
U
D
F
B
L
R

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HT1100-20 - HT1100-30 Table of Contents Index Introduction
Shipping Inventory
The machine 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 gang assemblies, reel and
rolling harrow attachment assemblies.
Refer to Figure 3
•All frame sections, hitch and torque tubes will be
shipped in shipping container rack.
•Small parts and bolts will be shipped in boxes.
Refer to Figure 4
•Rear attachments and gang assemblies will be shipped in
shipping container rack.
•Shipping containers or racks do not need to be returned
to Great Plains.
Figure 3
Shipping Rack & Box
42967
Figure 4
Shipping Gangs & Attachments
42968

HT1100-20 - HT1100-30 Table of Contents Index Introduction
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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 components.
Centering components:
Be sure and center fork truck or chains (overhead hoist) on
components so they won’t slide and cause injury.
Carefully un-band components.
Now unload individual components 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
Position boxes in area that you can maneuver
components up to machine to assembly.
4. Carefully remove banding from boxes.
5. Carefully remove banding from brace bars and finishing
reels.
6. Locate and identify all components before assembling.
Further Assistance
Great Plains Manufacturing, Inc. wants you to be satisfied
with your new Terra Max. If for any reason you do not
understand any part of this manual or are otherwise dissatisfies
with the product please contact:
Great Plains Service Department
1525 E. North St.
PO Box 5060
Salina, KS 67402-5060
Or go to www.greatplainsag.com and follow the contact
information at the bottom of your screen for our service
department.

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HT1100-20 - HT1100-30 Table of Contents Index Assembly
Assembly
Center Frame & Lift Assembly
Refer to Figure 5
Note:Once the center frame has been uncrated and put on
stands, the brace bar may be installed. See “Parts Man-
ual” for part numbers and description of parts.
7. Align holes in plates of the center brace bar (1) with holes
on front of center frame (2), secure with 34x 2 hex bolts
(3), 34lock washers and nuts.
8. Install the center cylinder mounts (16) to the center frame
(2) use 34x 2 hex bolts (3), 34lock washers and nuts to
secure to the frame.
9. Carefully lower the torque tube (4) with an overhead hoist
until holes are aligned with the holes on top of center
frame (2) and secure with 1.25 x 7.75 pins (6), and
1.25 x 6.75 pin (5), 38x 214Gr. 8, and special thread bolts
(7) and 38top lock nuts.
10. Align hole in lift strap (8) and cylinder mount plate (9) in
proper orientation shown in drawing. Secure lift strap (8)
with 1 x 312hex bolts (10) and 1 lock nuts, rear of
cylinder mount plate (9) to plates of torque tube (4) with 1
x 4 hex bolt (11) and 1 lock nut.
11. Install the cylinders (12) using 1 x 318pins (13),
1.5 x 1.0 x .075 machine washers and 316 x 2 cotter pin.
12. Install cylinder transport locks (13) onto cylinder rods
(12) using 38x 3 pins and clip pins.
13. Install center breaker crossbar (14) using 58x5
132 5 u-
bolt (15) and 58lock washers and hex bolts.
14. Tighten all bolts with lock nuts snug, but do not torque.
The rest of the bolts may be tightened to specs, See
“Torque Values Chart” on page 38.

HT1100-20 - HT1100-30 Table of Contents Index Assembly
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5
7
6
14
11
9
10
13
15
4
12
3
1
2
8
U
D
F
B
L
R
10
16
3
Figure 5
Center Frame & Lift Assembly TP-69587

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HT1100-20 - HT1100-30 Table of Contents Index Assembly
Center Transport 20 & 25
Refer to Figure 6
15. Slide walking beam assembly (1) into torque tube (2) and
align holes. Secure with 12x 6, Gr. 8 hex bolts (3) and 1/2
top lock nut.
16. Slide hub/spindle assemblies (4) into walking beam
assembly (1) and align holes. Secure with 12x 5 hex bolts
(5) and 12top lock nut.
17. Attach tire/wheel assemblies (6) with 58lug nuts (7).
18. Tighten all bolts with lock nuts snug, but do not torque.
The rest of the bolts may be tightened to specs, See
“Torque Values Chart” on page 38.
Center Transport 30
The walking beam (8) may come pre-assembled to torque tube (20). If not pre-assembled start by assuring the
bearings (8) and inside of torque tube is clean, packing the bearings (8) with grease and following the steps closely
to assure the correct assembly of components.
Refer to Figure 7
19. Once the bearings (8) are packed with grease, slide them (one on each side) into pre-installed bearing cup of torque tube (20).
Slide seals (9) into torque tube (20). Slide spindle sleeve (10), one into inside of torque tube (20), through seal (9) and bearing
(8), the other one over the pivot spindle (12). Slide the LH and RH walking beams (11) over torque tube (13) in orientation
shown with spindle tubes offset towards top. Be sure holes are aligned and slide pivot spindle (12) through from outside of
machine. Secure with two 2.25 x 1.50 x 10ga machine washers (13) and 1 12slotted nut (14). Tighten 112slotted nut (14)
down snug, then back off 18to 14turn, enough to align slot with hole in pivot spindle and install 14x 3 cotter pin (15). Bend
cotter pin over to secure. Be sure walking beam (11) will pivot freely but there should be no endplay.
20. Grease zerk (21) sparingly but do not over grease.
21. Slide hub/spindle assembly (16) into walking beam (11) and align holes. Secure with 34x 5 hex bolts (17) and 34top lock
nut.
22. Attach tire/wheel assembly (18) with 34flange nuts (19).
23. Tighten all bolts with lock nuts snug, but do not torque. The rest of the bolts may be tightened to specs, See “Torq ue Values
Chart” on page 38.
7
U
D
F
B
L
R
6
4
1
5
4
3
2
Figure 6
Center Transport 20-25
42953

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19
9
8
17
98
18
18
20
10
U
D
F
B
L
R
10
21
11
12
13
14
15
16
14
Figure 7
Center Transport 30 43137

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HT1100-20 - HT1100-30 Table of Contents Index Assembly
Level Bar & Fold Brackets
Refer to Figure 8
24. Install fold brackets (1) (rear fold bracket only on 30
model) with 34x 2 hex bolt (2), 34lock washers and nuts.
25. Attach outside plate of wing stops (3) to plate on frame
with 58x1
12hex bolts (4), 58lock washers and nuts.
Secure inside plate to truss bars with 58x4
132 x9 12u-
bolts (5), 58lock washers and nuts.
26. Attach 34x 3 hitch pin (13) to tube wing stops (3).
27. Install rear level bar (6) to torque tube with 1 x 912pins
(7), 38x 214, Gr. 8 hex bolts (8) and 38nylon lock nut.
Be sure to install weight packs before attaching the front
and back halves of the level bar.
28. Secure the front of the level bar (12) to the rear (6) with
34x 2, Gr. 8 hex bolts (5) 34lock washers and nuts.
29. Install h-bracket assembly (9) to front of level bar (12)
between the 2 halves of the spring (14), secure on rod with
spring guide (15), 112hex nut and 112jam nut.
30. Install bottom of h-bracket assembly (9) to center brace
bar with 1 x 314clevis pin (10), 1.5 x 1.00 x.075 machine
washer (11) and 316 x 2 cotter pin.
31. Bolts may be tightened to specs, See “Torque Val ues
Chart” on page 38 and all cotter pins may be bent.

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8
1
2
1
12
3
5
11
10
6
7
93
4
13
14
15
U
D
F
B
L
R
Figure 8
Level Bar & Fold Brackets TP-69591

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HT1100-20 - HT1100-30 Table of Contents Index Assembly
Hitch
Refer to Figure 9
32. Bolt the hitch frame (1) to front trusses with the 114x 8 Gr. 8 bolts (2), 114flat washer (3) (one side of uniball to take up
space) and 114top lock nuts. Tighten bolts snug, do not torque, as the hitch must pivot freely.
33. Install jack (4) on front outside of hitch to support the front of hitch (1) for the rest of assembly.
34. Attach h-bracket (5) in orientation shown below with 1 x 22964 clevis pins (6), 1.5 x 1.00 x 0.075 machine washers and 316 x
2 cotter pins.
35. Attach ends of level bar tube (7) with 114x8
12Gr. 8 special thread bolts (8), to h-brackets (5), on hitch frame and center
frame, secure with 114top lock nut.
36. Attach base end of cylinder (10) with 1x 6 Gr. 8 special thread bolt (11) to ears on hitch frame, attach the rod end to the
cylinder to top of the h-bracket (5) with 1 x 8 Gr. 8 special thread bolt (9) and 1 top lock nuts.
37. Attach two, 134gang wrenches (12) and one, 2516-11516 turnbuckle wrench (13) over pegs on back of hitch, secure with 316
w/cotter/chain (14).
38. Install the spring hose holder (15) to welded nut on front of hitch with 12x 1 Gr. 5 bolt (16), 12lock washer and flat washer.
39. Align holes in hitch base (17) with holes on front of hitch frame (1). Align holes of safety chain support (18) in orientation
shown, secure with two, 1 x 8 Gr. 8 special thread bolts (9), six, 1 flat washers (19) (4 right side, 2 left side), 1 lock washers
and 1 nuts.
40. Attach safety chain (20) to bottom side of hitch frame (1), secure with 78x 3 hex bolt (21), 78flat washer, 78lock washer and
78nut.
41. Mount manual pack (22) with 14x 1 hex bolts (23), mini end wheel press wheels (24), 14lock washers and nuts. Tighten all
bolts with lock nuts snug, but do not torque. The rest of the bolts may be tightened to specs, See “Torque Values Chart” on
page 38.
Before adhering the decal to the level gauge bracket, be sure to retract the cylinder all the way, position A lines up
with the red indicator.

HT1100-20 - HT1100-30 Table of Contents Index Assembly
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U
D
F
B
L
R
4
11
1
7
14
10
22
6
16
21
15
919
20
18
17
8
9
5
8
2
13
12
3
23
24
Figure 9
Hitch TP-69590

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HT1100-20 - HT1100-30 Table of Contents Index Assembly
Valve Brackets & Valves
Refer to Figure 11
The valves and will be connected to the correct hoses
and will need to be installed on the center brace bar.
The brackets may be in place. If for some reason they
are not follow the steps below to install.
42. Use 516 x4
12Gr. 5 hex bolt (3), 516 lock nuts and
washers to secure the bypass valve (1) to the by pass valve
bracket (2). The bypass valve bracket (2) is attached to the
center frame using 38x1
12hex bolts (4), 38lock washers
and hex nuts.
43. The lock valve (5) is attached to a mounting plate that is
welded to the frame. Use 14x1
34Gr. 5 hex bolts (6) to
secure to the frame.
44. Depth control valve (7) is secured to the frame using
516 x 2 hex bolts (8) and 516 lock washers.
45. The splitter valve (9), is secure to the mounting plate on
the center brace bar using 516 x 2 hex bolts (8) and 516
lock washers.
46. If your unit has the Hydraulic Reel option there will be an
additional down pressure valve (10), mount this on the
back side of the bulkhead fitting plate, using mount (11),
replace the 38x1
12Gr. 5 (4) hex bolts, with 38x2(4).
Use 516 x4
12Gr. 5 hex bolt (3), 516 lock nuts and
washers to secure
47. Be sure hoses are routed as shown in, See “Valves &
Hoses” on page 16.
48. Bolts may be tightened to specs, Bolts may be tightened to
specs, See “Torque Values Chart” on page 38.
Valves & Hoses
Refer to Figure 12
The hoses may be shipped hooked up to valves,
cylinders, but will need to be routed and attached to
the machine in the proper places. The hoses from the
hitch will need to be connected to the bulkhead fittings
on the center brace bar. The bypass (1), lock valve
(2), splitter valve (3) and depth control valve (4) hoses
will be routed underneath or around the weight kits (if
your unit is equipped with this option) so that they may
be installed or removed without taking hoses or
valves lose. The hoses will be secured to the frames
using hose holders and P-clips. If any of the hoses are
not already secured to the frame route the hoses
along the path with the hose holders to the bulkhead
brackets and fittings. See “Appendix - Reference
Information” on page 38 for proper mounting
instructions and hose routing.
8
5
9
6
1
7
U
D
F
B
L
R
3
2
4
8
10
11
3
Figure 10
Valve Brackets & Valves
TP-69648
4
1
2
3
Figure 11
Valve Brackets & Hoses
TP-69626