Land Pride Disc Harrows DH3510 User manual

Table of Contents
Cover photo may show optional equipment not supplied
with standard unit.
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Spanish Language, please see your Land Pride dealer.
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!
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Disc Harrow
DH3510 & DH3512
322-251M
Operator’s Manual
Printed 12/7/18
25988

12/7/18DH3510 & DH3512 Disc Harrow 322-251M
Machine Identification
Record your machine details in the log below. If you replace this manual, be sure to transfer this information to the new
manual.
If you, or the dealer, have added Options not originally ordered with the machine, or removed Options that were
originally ordered, the weights and measurements are no longer accurate for your machine. Update the record by
adding the machine weight and measurements provided in the Specifications & Capacities Section of this manual with
the Option(s) weight and measurements.
Dealer Contact Information
Model Number
Serial Number
Machine Height
Machine Length
Machine Width
Machine Weight
Delivery Date
First Operation
Accessories
Name:
Street:
City/State:
Telephone:
Email:
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Table of Contents
12/7/18
© Copyright 2018 All rights Reserved
Land Pride 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, Land Pride assumes no responsibility for errors or omissions.Neither is any liability assumed for damages resulting from the use
of the information contained herein. Land Pride 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.
Land Pride is a registered trademark.
All other brands and product names are trademarks or registered trademarks of their respective holders.
Printed in the United States of America.
DH3510 & DH3512 Disc Harrow 322-251M
Important Safety Information . . . . . . . . . . . . . 1
Safety at All Times . . . . . . . . . . . . . . . . . . . . . . . . . 1
Look for the Safety Alert Symbol . . . . . . . . . . . . . . . 1
Safety Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . 7
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Owner Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Further Assistance . . . . . . . . . . . . . . . . . . . . . . . . 7
Section 1: Assembly & Set-up . . . . . . . . . . . . 8
Tractor Requirements . . . . . . . . . . . . . . . . . . . . . . . 8
Torque Requirements . . . . . . . . . . . . . . . . . . . . . . . 8
Dealer Preparations . . . . . . . . . . . . . . . . . . . . . . . . 8
Tractor Shutdown Procedure . . . . . . . . . . . . . . . . . 8
Single Wheel Assembly . . . . . . . . . . . . . . . . . . . . . 9
Hitch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Hydraulic Cylinder Assembly . . . . . . . . . . . . . . . . . 10
Reflector/Light Brackets . . . . . . . . . . . . . . . . . . . . 11
Swing Arm Assembly . . . . . . . . . . . . . . . . . . . . . . 11
Disc Gang Assembly . . . . . . . . . . . . . . . . . . . . . . . 12
Disc Gang Positioning . . . . . . . . . . . . . . . . . . . . . . 13
Adjustment Lever Storage . . . . . . . . . . . . . . . . . . . 14
Tractor Hook-up . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Hook-up Hydraulics . . . . . . . . . . . . . . . . . . . . . . . . 15
Purge Hydraulic System . . . . . . . . . . . . . . . . . . . . 15
LED Light Kit Assembly . . . . . . . . . . . . . . . . . . . . . 16
Hook-up LED Lights . . . . . . . . . . . . . . . . . . . . . . . 17
Section 2: Optional Equipment Set-up . . . . . 18
Disc Scrapers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Scraper Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 18
Furrow Filler Assembly . . . . . . . . . . . . . . . . . . . . . 20
Furrow Scraper Assembly . . . . . . . . . . . . . . . . . . . 20
Center Sweep Assembly . . . . . . . . . . . . . . . . . . . . 20
Park Jack Assembly . . . . . . . . . . . . . . . . . . . . . . . 20
Dual Wheel Assembly . . . . . . . . . . . . . . . . . . . . . . 21
Slow Moving Vehicle Sign . . . . . . . . . . . . . . . . . . . 21
Section 3: Adjustments . . . . . . . . . . . . . . . . . 22
Out-of-Field Adjustments . . . . . . . . . . . . . . . . . . . . 22
Side to Side Leveling . . . . . . . . . . . . . . . . . . . . . 22
Front to Rear Leveling . . . . . . . . . . . . . . . . . . . . 22
Disc Gang Angle Adjustment . . . . . . . . . . . . . . . 22
Disc Scraper Adjustments . . . . . . . . . . . . . . . . . 23
In-Field Adjustments . . . . . . . . . . . . . . . . . . . . . . . 23
Hydraulic Cylinder Depth Adjustment . . . . . . . . . 24
Disc Gang Angle . . . . . . . . . . . . . . . . . . . . . . . . 24
Disc Leveling Front To Rear . . . . . . . . . . . . . . . . 24
Disc Blade Replacement . . . . . . . . . . . . . . . . . . . . 24
Section 4: Operating Procedures . . . . . . . . . 25
Operator’s Responsibilities . . . . . . . . . . . . . . . . . . 25
Transporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Field Operating Instructions . . . . . . . . . . . . . . . . . . 26
Unhook Disc Harrow . . . . . . . . . . . . . . . . . . . . . . . 26
General Operating Instructions . . . . . . . . . . . . . . . 27
Section 5: Maintenance & Lubrication . . . . . 28
General Maintenance Information . . . . . . . . . . . . . 28
Tractor Maintenance . . . . . . . . . . . . . . . . . . . . . . . 28
Daily Operational Checks . . . . . . . . . . . . . . . . . . . 28
Long-Term Storage . . . . . . . . . . . . . . . . . . . . . . . . 29
Lubrication Points . . . . . . . . . . . . . . . . . . . . . . . . . 30
Hitch Pivot Points . . . . . . . . . . . . . . . . . . . . . . . . 30
Spring Adjuster Tube . . . . . . . . . . . . . . . . . . . . . 30
Spring Washers . . . . . . . . . . . . . . . . . . . . . . . . . 30
Axle Top Clamp Half . . . . . . . . . . . . . . . . . . . . . 31
Axle Bottom Clamp Half . . . . . . . . . . . . . . . . . . . 31
Disc Gang Hanger Bearings . . . . . . . . . . . . . . . . 31
Wheel Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Section 6: Specifications & Capacities . . . . . 32
Section 7: Features & Benefits . . . . . . . . . . . 34
Section 8: Troubleshooting . . . . . . . . . . . . . . 36
Section 9: Torque Values Chart . . . . . . . . . . . 38
Section 10: Warranty . . . . . . . . . . . . . . . . . . . 39

Table of Contents Continued
12/7/18
Parts Manual QR Locator
The QR (Quick Reference) code on the
cover and to the left will take you to the
Parts Manual for this equipment.
Download the appropriate App on your
smart phone, open the App, point your
phone on the QR code and take a picture.
Dealer QR Locator
The QR code on the left will
link you to available dealers
for Land Pride products.
Refer to Parts Manual QR
Locator on this page for
detailed instructions.
DH3510 & DH3512 Disc Harrow 322-251M
Table of Contents
See previous page for Table of Contents.

Important Safety Information
12/7/18 1
Important Safety Information
Listed below are common practices that may or may not be applicable to the products
described in this manual.

Tractor Shutdown & Storage
If engaged, disengage power
take-off.
Park on solid, level ground and
lower implement to ground or onto
support blocks.
Put tractor in park or set park
brake, turn off engine, and remove
switch key to prevent unauthorized
starting.
Relieve all hydraulic pressure to
auxiliary hydraulic lines.
Wait for all components to stop
before leaving operator’s seat.
Use steps, grab-handles and
anti-slip surfaces when stepping
on and off the tractor.
Detach and store implement in an
area where children normally do
not play. Secure implement using
blocks and supports.
OFF
REMOVE
Look for the Safety Alert 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.
Safety Precautions for
Children
Tragedy can occur if the operator
is not alert to the presence of
children. Children generally are
attracted to implements and their
work.
Never assume children will remain
where you last saw them.
Keep children out of the work area
and under the watchful eye of a
responsible adult.
Be alert and shut the implement
and tractor down if children enter
the work area.
Never carry children on the tractor
or implement. There is not a safe
place for them to ride. They may
fall off and be run over or interfere
with the control of the power
machine.
Never allow children to operate the
power machine, even under adult
supervision.
Never allow children to play on the
power machine or implement.
Use extra caution when backing
up. Before the tractor starts to
move, look down and behind to
make sure the area is clear.
Safety at All Times
Careful operation is your best
assurance against an accident.
All operators, no matter how much
experience they may have, should
carefully read this manual and
other related manuals, or have the
manuals read to them, before
operating the power machine and
this implement.
Thoroughly read and understand
the “Safety Label” section. Read
all instructions noted on them.
Do not operate the equipment
while under the influence of drugs
or alcohol as they impair the ability
to safely and properly operate the
equipment.
The operator should be familiar
with all functions of the tractor and
attached implement and be able to
handle emergencies quickly.
Make sure all guards and shields
appropriate for the operation are in
place and secured before
operating implement.
Keep all bystanders away from
equipment and work area.
Start tractor from the driver’s seat
with hydraulic controls in neutral.
Operate tractor and controls from
the driver’s seat only.
Never dismount from a moving
tractor or leave tractor unattended
with engine running.
Do not allow anyone to stand
between tractor and implement
while backing up to implement.
Keep hands, feet, and clothing
away from power-driven parts.
While transporting and operating
equipment, watch out for objects
overhead and along side such as
fences, trees, buildings, wires, etc.
Do not turn tractor so tight as to
cause hitched implement to ride
up on the tractor’s rear wheel.
Store implement in an area where
children normally do not play.
When needed, secure attachment
against falling with support blocks.
Be Aware of
Signal Words
A signal word designates a degree or
level of hazard seriousness. The
signal words are:
Indicates a hazardous situation that, if
not avoided, will result in death or
serious injury.
Indicates a hazardous situation that, if
not avoided, could result in death or
serious injury.
Indicates a hazardous situation that, if
not avoided, may result in minor or
moderate injury.
WARNING
CAUTION
!
!
!
DANGER
!

Important Safety Information
12/7/18
2
Listed below are common practices that may or may not be applicable to the products
described in this manual.
Practice Safe Maintenance
Understand procedure before doing
work. Refer to the Operator’s
Manual for additional information.
Work on a level surface in a clean
dry area that is well-lit.
Lower implement to the ground and
follow all shutdown procedures
before leaving the operator’s seat to
perform maintenance.
Do not work under any hydraulic
supported equipment. It can settle,
suddenly leak down, or be lowered
accidentally. If it is necessary to
work under the equipment, securely
support it with stands or suitable
blocking beforehand.
Use properly grounded electrical
outlets and tools.
Use correct tools and equipment for
the job that are in good condition.
Allow equipment to cool before
working on it.
Disconnect battery ground cable (-)
before servicing or adjusting
electrical systems or before welding
on implement.
Inspect all parts. Make certain
parts are in good condition &
installed properly.
Replace parts on this implement
with genuine Land Pride parts only.
Do not alter this implement in a way
which will adversely affect its
performance.
Do not grease or oil implement
while it is in operation.
Remove buildup of grease, oil, or
debris.
Always make sure any material and
waste products from the repair and
maintenance of the implement are
properly collected and disposed.
Remove all tools and unused parts
before operation.
Do not weld or torch on galvanized
metal as it will release toxic fumes.
Use A Safety Chain
A safety chain will help control
drawn machinery should it
separate from the tractor drawbar.
Use a chain with the strength
rating equal to or greater than the
gross weight of the towed
implement.
Attach the chain to the tractor
drawbar support or other specified
anchor location. Allow only
enough slack in the chain to
permit turning.
Always hitch the implement to the
machine towing it. Do not use the
safety chain tow the implement.
Transport Safely
Comply with federal, state, and
local laws.
Use towing vehicle and trailer of
adequate size and capacity. Secure
equipment towed on a trailer with
tie downs and chains.
Sudden braking can cause a towed
trailer to swerve and upset. Reduce
speed if towed trailer is not
equipped with brakes.
Avoid contact with any overhead
utility lines or electrically charged
conductors.
Always drive with load on end of
loader arms low to the ground.
Always drive straight up and down
steep inclines with heavy end of a
tractor with loader attachment on
the “uphill” side.
Engage park brake when stopped
on an incline.
Maximum transport speed for an
attached equipment is 20 mph. DO
NOT EXCEED. Never travel at a
speed which does not allow
adequate control of steering and
stopping. Some rough terrains
require a slower speed.
As a guideline, use the following
maximum speed weight ratios for
attached equipment:
20 mph when weight of attached
equipment is less than or equal
to the weight of machine towing
the equipment.
10 mph when weight of attached
equipment exceeds weight of
machine towing equipment but
not more than double the weight.
IMPORTANT: Do not tow a load
that is more than double the weight
of the vehicle towing the load.
Tire Safety
Tire changing can be dangerous
and must be performed by
trained personnel using the
correct tools and equipment.
Always maintain correct tire
pressure. Do not inflate tires
above recommended pressures
shown in the Operator’s Manual.
When inflating tires, use a clip-on
chuck and extension hose long
enough to allow you to stand to
one side and NOT in front of or
over the tire assembly. Use a
safety cage if available.
Securely support the implement
when changing a wheel.
When removing and installing
wheels, use wheel handling
equipment adequate for the
weight involved.
Make sure wheel bolts have been
tightened to the specified torque.

Important Safety Information
12/7/18 3
Listed below are common practices that may or may not be applicable to the products
described in this manual.
Avoid High
Pressure Fluids Hazard
Escaping fluid under pressure can
penetrate the skin causing serious
injury.
Before disconnecting hydraulic
lines or performing work on the
hydraulic system, be sure to
release all residual pressure.
Make sure all hydraulic fluid
connections are tight and all
hydraulic hoses and lines are in
good condition before applying
pressure to the system.
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.
DO NOT DELAY. If an accident
occurs, see a doctor familiar with
this type of injury immediately. Any
fluid injected into the skin or eyes
must be treated within
a few hours or
gangrene may
result.
Wear Personal Protective
Equipment (PPE)
Wear protective clothing and
equipment appropriate for the job
such as safety shoes, safety
glasses, hard hat, and ear plugs.
Clothing should fit snug without
fringes and pull strings to avoid
entanglement with moving parts.
Prolonged exposure to loud noise
can cause hearing impairment or
hearing loss. Wear suitable
hearing protection such as
earmuffs or earplugs.
Operating equipment safely
requires the operator’s full
attention. Avoid wearing
headphones while operating
equipment.
Use Seat Belt and ROPS
Land Pride recommends the use
of a CAB or roll-over-protective-
structures (ROPS) and seat belt
in almost all power machines.
Combination of a CAB or ROPS
and seat belt will reduce the risk
of serious injury or death if the
power machine should be upset.
If ROPS is in the locked-up
position, fasten seat belt snugly
and securely to help protect
against serious injury or death
from falling and machine overturn.
Keep Riders Off
Machinery
Never carry riders on tractor or
implement.
Riders obstruct operator’s view
and interfere with the control of
the power machine.
Riders can be struck by objects or
thrown from the equipment.
Never use tractor or implement to
lift or transport riders.
Avoid Underground
Utilities
Dig Safe, Call 811 (USA).
Always contact your local utility
companies (electrical, telephone,
gas, water, sewer, and others)
before digging so that they may
mark the location of any
underground services in the area.
Be sure to ask how close you can
work to the marks they positioned.
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.
911
Use Safety
Lights and Devices
Slow moving tractors, skid steers,
self-propelled machines, and towed
equipment can create a hazard
when driven on public roads. They
are difficult to see, especially at
night. Use the Slow Moving Vehicle
sign (SMV) when on public roads.
Flashing warning lights and turn
signals are recommended
whenever driving on public roads.

Important Safety Information
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M 12/7/18
4
25989
25989
25989
838-293C
Warning: Read Manual
818-719C
Caution: General Instructions
Safety Labels
Your Disc Harrow comes equipped with all safety labels in
place. They were designed to help you safely operate your
implement. Read and follow their directions.
1. Keep all safety labels clean and legible.
2. Refer to this section for proper label placement. Replace
all damaged or missing labels. Order new labels from your
nearest Land Pride dealer. To find your nearest dealer,
visit our dealer locator at www.landpride.com.
3. Some new equipment installed during repair requires
safety labels to be affixed to the replaced component as
specified by Land Pride. When ordering new components
make sure the correct safety labels are included in the
request.
4. Refer to this section for proper label placement.
To install new labels:
a. Clean surface area where label is to be placed.
b. Spray soapy water onto the cleaned area.
c. Peel backing from label and press label firmly onto the
surface.
d. Squeeze out air bubbles with edge of a credit card or
with a similar type of straight edge.
838-588C
Notice: 20 MPH Maximum Speed
Important Safety Information

Important Safety Information
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M12/7/18 5
35913
25990
25990
25989
818-831C
Warning: High Pressure
838-615C
2" x 9" Amber Reflector (2 places)
838-614C
2" x 9" Red Reflector (2 places)
838-603C
2" x 9" Orange Reflector (2 places)

Important Safety Information
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M 12/7/18
6
838-093C
Warning: Sharp Object Hazard
25988
25989
848-247C
Warning: Crushing Falling Blade Hazard

Introduction
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M12/7/18 7
The parts on your Disc Harrow have been specially
designed by Land Pride and should only be replaced with
genuine Land Pride parts. Contact a Land Pride dealer if
customer service or repair parts are required. Your Land
Pride dealer has trained personnel, repair parts, and
equipment needed to service the im.plement.
Serial Number
For quick reference and prompt service, record model
and serial number on the inside cover page and again on
the warranty page. Always provide model number and
serial number when ordering parts and in all
correspondences with your Land Pride dealer. For
location of your serial number plate, see Figure 1
Serial Number Plate Location
Figure 1
Further Assistance
Your dealer wants you to be satisfied with your new Disc
Harrow. If for any reason you do not understand any part
of this manual or are not satisfied with the service
received, the following actions are suggested:
1. Discuss any problems you have with your implement
with your dealership service personnel so they can
address the problem.
2. If you are still not satisfied, seek out the owner or
general manager of the dealership, explain the
problem, and request assistance.
3. For further assistance write to:
Land Pride Service Department
1525 East North Street
P.O. Box 5060
Salina, Ks. 67402-5060
E-mail address
lpser[email protected]
25989
Introduction
Land Pride welcomes you to the growing family of new
product owners. This Disc Harrow has been designed
with care and built by skilled workers using quality
materials. Proper assembly, maintenance, and safe
operating practices will help you get years of satisfactory
use from this Dis Harrow.
Application
The Land Pride DH3510 ten foot and DH3512 twelve foot
pull-type discs are perfectly matched for agricultural
utility tractors having 45 to 100 drawbar horsepower.
They have applications in seed bed preparation, soil
pulverization, and tillage on smaller farms, ranches,
construction sites, race tracks, rodeo grounds, nurseries,
reclamation sites, and sod farms. Economy conscious
customers will find them more than equal to just about
any soil cultivation task you can throw at them. With
choices of notched or smooth 20" or 22" discs mounted
on fore and aft gangs that have easily adjustable angling,
the DH3510 and DH3512 readily adapt to a wide range of
tillage conditions.
See “Specifications & Capacities” on page 32 and
“Features & Benefits” on page 34 for additional
information and performance enhancing options.
Using This Manual
•This Operator’s Manual is designed to help familiarize
the operator with safety, assembly, operation,
adjustments, troubleshooting, and maintenance. Read
this manual and follow the recommendations to help
ensure safe and efficient operation.
•The information contained within this manual was
current at the time of printing. Some parts may change
slightly to assure you of the best performance.
•To order a new Operator’s or Parts Manual, contact
your authorized dealer. Manuals can also be
downloaded, free-of-charge, from our website at
www.landpride.com
Terminology
“Right” or “Left” as used in this manual is determined by
facing the direction the machine will operate while in use
unless otherwise stated.
Definitions
Owner Assistance
The dealer should complete the Online Warranty
Registration at the time of purchase. This information is
necessary to provide you with quality customer service.
IMPORTANT: A special point of information related
to the following topic. Land Pride’s intention is this
information must be read & noted before continuing.
NOTE: A special point of information that the
operator should be aware of before continuing.

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M 12/7/18
8
Section 1: Assembly & Set-up
Tractor Requirements
Tractor horsepower and weight must be capable of
controlling the Disc Harrow under all operating
conditions. Smaller horsepower and lighter weight
tractors must not be used.
•DH3510 Model
Horsepower . . . . . . . . . . . . . . . . . . . . . . . . 45-100 hp
Hitch Type. . . . . . . . . . . . . . . . . . . . . . . . . . . Drawbar
Hydraulic Outlets . . . . . . . . . . . . . . . .2 duplex outlets
•DH3512 Model
Horsepower . . . . . . . . . . . . . . . . . . . . . . . . 55-100 hp
Hitch Type. . . . . . . . . . . . . . . . . . . . . . . . . . . Drawbar
Hydraulic Outlets . . . . . . . . . . . . . . . .2 duplex outlets
!WARNING
To avoid serious injury or death:
Lightweight tractors with rear attached implements may need
weights added to the front to maintain steering control.
Consult your tractor Operator’s Manual to determine proper
weight requirements and maximum weight limitations.
Torque Requirements
Refer to “Torque Values Chart for Common Bolt Sizes”
on page 38 to determine correct torque values when
tightening hardware during assembly and maintenance.
Dealer Preparations
Read and understand the Operator’s Manual. An
understanding of how it works will aid in the assembly
and setup.
Go through the “Assembly Checklist” on this page
before assembling the Disc Harrow. Speed up your
assembly task and make the job safer by having all
needed parts and equipment readily at hand.
This harrow has been partially assembled at the factory.
However, there are still some assembly requirements
before the machine is ready for operation.
Tractor Shutdown Procedure
The following are basic tractor shutdown procedures.
Follow these procedures and any additional shutdown
procedures provided in your tractor Operator’s Manual
before leaving the operator’s seat.
1. Reduce engine speed and disengage power take-off
if engaged.
2. Park tractor and implement on level, solid ground.
3. Lower implement to ground or onto non-concrete
support blocks.
4. Put tractor in park or set park brake, turn off engine,
and remove switch key to prevent unauthorized
starting.
5. Relieve all hydraulic pressure to auxiliary hydraulic
lines.
6. Wait for all components to come to a complete stop
before leaving the operator’s seat.
7. Use steps, grab-handles and anti-slip surfaces when
stepping on and off the tractor.
Assembly Checklist
4Check Reference
Make sure miscellaneous assembly tools are on hand:
Hammer, tape measure, hacksaw, assortment of wrenches &
sockets, 3/8" drill, drill bits, and spirit level.
Have a forklift or hoist capable of 2500 lbs.
Have a minimum of two people available during assembly and
set-up.
Check to see if auxiliary tractor weights are needed.
Make sure quick disconnect adaptors match tractor’s duplex
outlets.
Make sure all major components and loose
parts are shipped with the machine.
Section 1 &
Section 2
Make sure working parts move freely, bolts are
tight & cotter pins are spread.
Operator’s
Manual
Make sure all grease fittings are in place and
lubricated.
Section 5
Page 30
Make sure all safety labels are correctly located
and legible. Replace if damaged.
Pages
4 to 6
Double check to make sure all fasteners & pins
are installed in the correct location. Refer to the
Parts Manual if unsure.
NOTE: All assembled hardware from the
factory has been installed in the correct
location. Remember location of a part or
fastener if removed during assembly. Keep
parts separated.
See Parts
Manual
322-251P
Make sure all Red and Amber reflectors are
correctly located and visible when machine is
in transport position.
Page 5
Make sure all tires are inflated to the specified
psi air pressure.
Section 8
Page 38
Make sure all wheel bolts and axle nuts are
tightened to the specified torque.
Section 8
Page 38

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M12/7/18 9
Hitch Assembly
Figure 1-2
Hitch Assembly
Refer to Figure 1-2:
1. Attach tongue (#5) to main frame (#3) with two
1"-8 x 4" GR5 cap screws (#8) & 1" nylock nut (#11).
Draw nuts up snug. Do not tighten.
2. If included, rotate optional park jack (#22) to the
upright position and retain with pin (#18). Extend jack
to support hitch approximately 18" off the ground.
Refer to “Park Jack Assembly” on page 20.
3. Attach mid point of pivot bracket (#7) to the main
frame (#3) with one 7/8" x 5 3/8" pin (#19) and two
3/16" x 1 1/2" cotter pins (#17). Bend one or both legs
of cotter pins to prevent them from falling out.
4. Attach pivot bracket (#7) to tongue with lower hitch
pin (#1) and 1/4" x 2" cotter pin (#15). Bend one or
both legs of cotter pin.
5. Attach spring adjuster (#6) to axle lug (#4) with
3/4"-10 x 2 1/2" GR 5 cap screw (#9) and 3/4" top
locknut (#12). Draw nut up snug. Do not tighten.
6. Insert 1/2"-13 x 1" GR5 hex head cap screw (#10)
through 1/2" spring lock washer (#13), 1/2" flat
washer (#14), spring hose loop (#20), 1/2" flat
washer (#14), and into welded nut on top of hitch
frame as shown. Tighten bolt to the correct torque.
7. Mount the five stroke control spacers (#21) onto the
spring adjuster (#6) storage rack.
8. Attach cylinder transport lock (#2) to spring adjuster
gusset with 1/4" wire retaining pin (#16).
25992
1" clevis plate
located on top
NOTE: Spring adjuster (#6) and pivot bracket (#7)
are shipped shop assembled together.
Single Wheel Assembly (Left Side Shown)
Figure 1-1
Single Wheel Assembly
Refer to Figure 1-1:
1. Unpack Disc Harrow from shipping crate.
2. Support main frame with a suitable lifting device.
3. Verify fit-up of spindle (#6) to support tube (#2) by
assembling them without anti-seize lubricant.
4. Remove spindle from support tube and apply a thin
coat of anti-seize lubricant on the unpainted spindle
shaft and a thin coat to the inside entrance of the
spindle support tube.
5. Insert spindle (#6) into support tube (#2) and secure
with two 1/2"-13 x 3 1/4" GR5 cap screws (#3) and
1/2" locknuts (#5). Tighten nuts to the correct torque.
6. Mount wheel (#1) to hub with five 1/2"-20 lug
nuts (#4). Tighten lug nuts to the correct torque.
7. Repeat steps 2 to 6 for the opposite side.
8. See “Dual Wheel Assembly” on page 21 for
instructions on installing optional dual wheels.
25991
Apply anti-seize lubricant to
spindle (#6) and entrance to
support tube (#2).
IMPORTANT: A forklift or adequate lifting devise is
recommended for lifting the main frame when
installing wheels, hitch, and hydraulic cylinder.

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M 12/7/18
10
Hydraulic Cylinder Assembly
!WARNING
To avoid serious injury or death:
Hydraulic fluid under high pressure can penetrate the skin
and/or eyes causing a serious injury. Wear protective gloves
and safety glasses or goggles when working with hydraulic
systems. Use a piece of cardboard or wood rather than hands
when searching for leaks. A doctor familiar with this type of
injury must treat the injury within a few hours or gangrene
may result. DO NOT DELAY.
Refer to Figure 1-3:
1. Position hydraulic cylinder (#3) with ports on top as
shown. Install two 90 degree elbows (#4) into the
cylinder ports with elbow fittings facing forward.
Tighten elbows in cylinder as needed.
2. Screw 111" long hydraulic hose (#5) into the front
elbow at cylinder base end and tighten.
3. Screw 123" long hydraulic hose (#7) into the rear
elbow at cylinder rod end and tighten.
4. Thread adapter fittings (#6) onto the other end of the
hydraulic hoses and tighten.
IMPORTANT: Attach cylinder base to the front main
frame lug. Hydraulic fittings will be stressed if
cylinder base is attached to the rear main frame lug.
5. Purge hydraulic cylinder of air before continuing.
a. Place hydraulic cylinder near a hydraulic power
source on the ground in an area where it can be
extend and retract freely.
b. Connect hydraulic hoses to a power source.
c. Fully extend & retract cylinder two or more cycles
until cylinder rod moves in and out smoothly.
d. Refer to “Purge Hydraulic System” on page 15 if
cylinder will not move smoothly.
6. Attach hydraulic cylinder base to the main frame lug
with 1" x 2 3/4" clevis pin (#1). Make sure hydraulic
ports are positioned on top and cylinder base
positioned to the front as shown.
7. Secure clevis pin with cotter pin (#2). Bend one or
both legs of cotter pin.
8. Route hydraulic hoses through pivot bracket (#9) and
spring hose loop (#8).
9. Adjust fittings on cylinder as needed to prevent wear
on outside of hose due to any frame contact.
10. Connect hydraulic hoses to a power source and
extend cylinder until holes in the rod clevis align with
axle lug hole.
11. Attach cylinder rod to axle frame with 1" x 2 3/4"
clevis pin (#1) and cotter pin (#2). Bend one or both
legs of cotter pin.
Hydraulic Cylinder Assembly
Figure 1-3
26524

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M12/7/18 11
Hydraulic Cylinder Transport Lock
Figure 1-4
Refer to Figure 1-4:
12. Fully extend hydraulic cylinder.
13. Remove transport lock (#1) from storage bar (#2)
and pin to cylinder rod with wire retaining pin (#3).
14. Retract cylinder until weight of Disc Harrow is
supported by the transport lock.
Reflector/Light Brackets
Refer to Figure 1-5:
1. Attach left-hand reflector bracket (#6) and right-hand
right-hand reflector bracket (#7) to the disc frame
with Red & Orange reflectors facing rearward using
1/2"-13 u-bolts (#13), flat washers (#11), and hex
nylock nuts (#10).
2. Tighten nylock nuts (#1) to the correct torque.
26539
Swing Arm Assembly
Refer to Figure 1-5:
1. Insert swing arms (#3A) through slots at rear of
mainframe with pivot hole end in first and sharp
object decal on the other end facing up.
2. Connect the two arms together at the center with two
spacers (#1), one top slide bracket (#5), one bottom
slide bracket (#2), two 3/4"-10 x 5" GR5 hex head
bolts (#8), and two 3/4" locknuts (#9). Tighten
locknuts to the correct torque.
3. Insert 1/2" spacer (#15) over rear pin located on the
main frame.
4. Install end hole on stabilizer bar (#4) over rear pin
and third hole back from the opposite end over the
top slide bracket pin.
5. Secure stabilizer bar with hairpin cotters (#12).
6. Apply a bead of silicone on the inside lip of the swing
tube outer ends. Press end caps (#14) into tube
ends.
7. Repeat steps 1 to 6 to install front swing arms (#3B).
NOTE: Bolt (#8) must be inserted into the left side
of front slide bracket (#5) before positioning slide
bracket under hydraulic lift cylinder.
Swing Arm Assembly (Hydraulic Cylinder and Spring Adjuster Not Shown for Clarity)
Figure 1-5
25993
Pivot Hole
Sharp Object Decals
Must Facing Up

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M 12/7/18
12
Disc Gang Assembly
Refer to Figure 1-6:
!WARNING
To avoid serious injury or death:
•Be careful when working with Disc blades as the edges are
sharp. Wear gloves when working around disc blades.
•Keep feet and other body extremities out from under the
disc gangs to prevent serious injury or death from crushing
or falling blade hazard.
IMPORTANT:
•Make sure swing arms (#1) are attached to the
frame before attaching disc gangs (#2) to the arms.
See “Swing Arm Assembly” on page 11.
•Disc gangs are provided in 7 1/2" & 9" spacing and
with plain or notched disc blades. Check with your
dealer to determine which disc gangs are mounted
on the front and which are mounted on the back.
•Front disc gangs are mounted with concave side of
disc blades facing out and rear disc gangs with
concave side facing in.
•Do not install flat washers (#4) and locknuts (#3A)
until installation of optional scrapers.
1. Start with the rear disc gangs. Position them under
the rear swing arms.
2. Lower the disc frame swing arms within close
proximity of the mounting brackets as follows:
Method #1: Use the hydraulic cylinder to raise and
lower the swing arms.
Method #2: Raise the front of the disc up to lower the
rear swing arms and raise the back of the disc up to
lower the front swing arms.
3. Align disc gangs with swing arms and then drop
u-bolts over the swing arms into the mounting
bracket holes. Take care to make sure the long
u-bolts are mounted in the holes located farthest
from the mounting bracket’s vertical leg.
4. Continue lowering the swing arms until they are
touching the mounting bracket flanges.
5. Install 3/4" hex flange top locknuts (#3B) to the short
u-bolts (#6). Draw nuts up loosely. Do not tighten.
6. Repeat steps 1 to 5 to attach the front disc gangs to
the front swing arms.
IMPORTANT: U-bolts (#5) are longer for attaching
optional scraper bars and are always located in the
holes furthest away from the vertical leg of the disc
gang mounting brackets.
Disc Gang Assembly (Model DH3512 with 9" disc Spacing Shown)
Figure 1-6
25994
TRAVEL
#5 = Long U-Bolts
#6 = Short U-Bolts
NOTE: If axle nut runs out of threads,
order 3/8" thick washer # 322-345D from
your nearest Land Pride dealer and
install between end disc and casting.

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M12/7/18 13
Disc Gang Positioning
Refer to Figure 1-7 & Figure 1-8:
You must know the Disc Harrow model number and
distance between disc blades (7 1/2" or 9") to position
disc gangs on the swing arms correctly.
1. Measure distance between disc blades. Use this
measurement to find dimensions A & B in the
“Positioning Chart” below. Dimensions A & B are
the distances from end of swing arms to end of the
first inside mounting bracket flange (#1).
2. Make a pencil mark (Dimensions A & B) on the swing
arm where the end of the mounting bracket flange
begins.
3. Move disc gang along the length of the swing arm
until end of inside mounting bracket flange is aligned
with the pencil mark made on the swing arm.
Rear Gang Position on Swing Arms (Right Side Shown)
Figure 1-7
Front Gang Position on Swing Arms (Right Side Shown)
Figure 1-8
Positioning Chart
Distance
From End of Swing Arm to End
of Mounting Bracket Flange
Model DH3510
Disc Spacing
Model DH3512
Disc Spacing
7 1/2" 9" 7 1/2" 9"
See Figure 1-7 A 7 1/16" 7 5/8" 6 15/16" 7 1/2"
See Figure 1-8 B 8 7/8" 9 1/2" 8 7/16" 9 1/16"
26523
Pencil
Mark
26523
Pencil Mark
4. Tighten the short u-bolt (#6) for the inside mounting
bracket (#1) to 170 ft-lbs. Do not attach nuts (#3A) to
the long u-bolts.
5. Move out to the next mounting bracket. Align this
bracket vertically and then tighten short u-bolt to
170 ft-lbs.
6. Continue moving out while aligning the mounting
brackets vertically and then tightening the short
u-bolts until all brackets have been secured.
7. Refer to “Disc Scrapers” & “Scraper Assembly” on
page 18 if optional disc scrapers are included. Skip to
step 8 if they are not included.
8. Install two flat washers (#4) and 3/4" hex flange top
locknuts (#3A) to each leg of the long u-bolts (#5).
Tighten nuts to 170 ft-lbs.
IMPORTANT: Make sure all mounting bracket legs
are vertical before tightening short u-bolts. This will
ensure that the long u-bolts are spaced properly
when mounting scraper channels.

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M 12/7/18
14
Adjustment Lever Storage
Refer to Figure 2-10 on page 21:
Store adjustment lever (#6) in a suitable location. One
location would be pinned under stabilize bar (#8) with
hairpin cotter (#7) as shown. If disc gang is angled such
that pinning the bar in front does not work, then try
pinning it behind.
Tractor Hook-up
!DANGER
To avoid serious injury or death:
A crushing hazard exists while hooking-up and unhooking
implement. Keep people and animals away while backing-up
to implement or pulling away from implement. Do not operate
hydraulic controls while a person or animal is directly behind
the power machine or near the implement.
!WARNING
To avoid serious injury or death:
•Always shut tractor down using “Tractor Shutdown
Procedure” provided in this manual before dismounting
tractor.
•Jack must be installed on the hitch and jack attachment pin
must be fully inserted and secured before working on or
around an implement not hooked to the tractor drawbar.
Refer to Figure 1-9:
1. Make certain park jack (#6) is properly attached to
implement hitch mount (#5) and secured with detent
pin (#7).
2. Pivot clevis hitch (#3) up horizontally and support in
this position with wire retaining pin (#4).
3. Start tractor and raise lower 3-point arms fully up.
Back tractor within close proximity of clevis (#3).
4. Raise or lower park jack (#6) to align clevis (#3) with
tractor drawbar. Drawbar should fit between lower
and upper plates of clevis.
5. Back tractor up to implement hitch clevis (#3) until
holes in drawbar and clevis are aligned.
6. Remove wire retaining pin (#4) and store in a safe
place for future use.
7. Insert 1 1/4" flat washers (#9 & #10) equally above
and below tractor drawbar until both spaces between
drawbar and clevis plates are filled. This will reduce
drawbar wear.
8. Insert 1 1/4" -7 x 6 1/2" GR5 hex bolt (#2) through
bottom clevis hole, 1 1/4" washers (#9), tractor
drawbar, remaining 1 1/4" washers (#10) and out
through upper clevis hole. Secure hex bolt with hex
nut (#13) and jam nut (#14). Tighten hex nut snugly to
remove all play and then back nut one-quarter turn.
Tighten Jam nut (#14) tight against hex nut (#13).
9. Lower park jack (#6) until implement weight is
removed from park jack. Rotate park jack
counterclockwise 90 degrees and reinsert detent
pin (#7) for storage.
10. Attach hitch safety chain (#1) to tractor. Adjust chain
length to remove all slack except what is necessary
to permit turning. Lock chain hook securely to the
safety chain.
11. Pin tractor drawbar in fixed center position.
Tractor Hook-up
Figure 1-9
25998
37298

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M12/7/18 15
Hook-up Hydraulics
The standard set-up requires one duplex outlet to
operate the two-way lift cylinder.
Refer to Figure 1-9 on page 14:
1. If not already completed, route hydraulic hoses (#12)
through hose spring support loop (#15).
2. Connect quick release coupler on end of hydraulic
hoses (#12) to tractor remote outlet.
3. Start tractor and operate control lever to raise and
lower Disc Harrow. If the implement works opposite
of what it should, shut tractor down and switch
hydraulic hose connections at the duplex outlet.
Refer to “Tractor Shutdown Procedure” on page 8.
4. Cycle lift cylinder back and forth several times to
purge air from it. If operation continues to be
sluggish, it may be necessary to purge air from the
cylinder and hydraulic lines. Refer to “Purge
Hydraulic System” below.
Purge Hydraulic System
!WARNING
To avoid serious injury or death:
Hydraulic fluid under high pressure can penetrate the skin
and/or eyes causing a serious injury. Wear protective gloves
and safety glasses or goggles when working with hydraulic
systems. Use a piece of cardboard or wood rather than hands
when searching for leaks. A doctor familiar with this type of
injury must treat the injury within a few hours or gangrene
may result. DO NOT DELAY.
1. Shut tractor down and relieve all hydraulic pressure
before dismounting. Refer to “Tractor Shutdown
Procedure” on page 8.
2. With implement lowered to the ground, remove
connecting pin from rod end of cylinder. Block
cylinder support in a vertical position with rod end up.
3. Cycle hydraulic system to extend and retract cylinder.
Repeat this process 2 times ending with cylinder fully
retracted.
4. Shut tractor down and relieve all hydraulic pressure
before dismounting.
5. Crack fitting at the rod end of cylinder to allow air to
escape.
6. Restart tractor and slowly activate tractor control
lever to extend the cylinder rod until air free oil leaks
from the fitting.
7. Follow tractor shutdown procedures before
dismounting tractor.
8. Tighten fitting on the rod end of cylinder.
9. Pin clevis on rod end of cylinder to the Disc Harrow.
10. Crack fitting at the base end of the cylinder and
repeat steps 6-8.
11. Tighten fitting on base end of cylinder.
12. Slowly cycle Disc Harrow to transport position while
checking to make sure hydraulic hoses are not
pinched in the process.

Section 1: Assembly & Set-up
Table of Contents
DH3510 & DH3512 Disc Harrow 322-251M 12/7/18
16
LED Light Kit Assembly
Refer to Figure 1-10:
The lead wiring harness (#4) is equipped with a 7-way
round pin connector. Make sure your tractor is equipped
with the 7-pin electrical outlet shown in Figure 1-11 on
page 17.
1. Lower Disc Harrow until discs and wheels are resting
on the ground.
2. Shut tractor down properly before dismounting.Refer
to “Tractor Shutdown Procedure” on page 8.
3. Mount right-hand light (#6) on top of the right-hand
reflector bracket (#15) as shown with Red light facing
back and to the inside.
a. Secure light assembly (#6) with 1/4"-20 x 1" GR 5
hex bolts (#7), flat washers (#8) and nylock nuts
(#9) as shown.
b. Tighten nylock nuts (#9) to the correct torque.
4. Mount left-hand light (#5) on top of the left-hand
reflector bracket (#16) as shown with Red light facing
back and to the inside.
a. Secure light assembly (#5) with 1/4"-20 x 1" GR 5
hex bolts (#7), flat washers (#8) and nylock
nuts (#9).
b. Tighten nylock nuts (#9) to the correct torque.
IMPORTANT: Amber lights “A” are located outside
facing front and back. Red lights “B” are located
inside facing back only.
5. Attach enhance module (#3) to the mainframe as
shown with #10-24 x 1" cap screws (#10) and nylock
nuts (#11). Tighten nylock nuts.
6. Plug “Light” connector (#1B) on the right-hand side to
connector (#1A) for LED light (#6).
7. Plug “Light” connector (#2B) on the left-hand side to
connector (#2A) for LED light (#5).
8. Route wire harnesses (#1 & #2) on both sides of the
mainframe to the front and along the front beam to
enhance module (#3).
IMPORTANT: Connectors on wire harness (#1 & #2)
are labeled “Light” on one end and “Enhancer” on
the other end. Ends labeled “Light” connect to the
light assemblies (#5 & #6). Ends labeled “Enhancer”
connect to enhance module (#3).
IMPORTANT: See Detail A: Connector (#1D) has a
Red wire and connects to wire harness (#1) on the
right side. Connector (#2D) has a yellow wire and
connects to wire harness (#2) on the left side.
LED Light Kit Assembly (Mainframe shown without components for clarity)
Figure 1-10
Amber Lights “A”
Amber Lights “A”
Red Light “B”
Red Light “B”
70250
Detail A
70482