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Section 4: Operating Procedures 

Table of Contents

DH3510 & DH3512 Disc Harrow 322-251M

12/7/18

25

Section 4: Operating Procedures

!

WARNING

To avoid serious injury or death:  

Allow only persons to operate this implement who have 

fully read and comprehended this manual, who have been 

properly trained in the safe operation of this implement, and 

who are age 16 or older. Serious injury or death can result 

from the inability to read, understand, and follow 

instructions provided in this manual.

Do not use implement to lift objects; to pull objects such as 

fence posts, stumps, etc; or to push objects. The unit is not 

designed or guarded for these uses.

Never carry riders on the implement or tractor. Riders can 

obstruct the operator’s view, interfere with control of the 

equipment, be pinched by moving components, become 

entangled in rotating components, be struck by objects, be 

thrown or fall from the equipment, etc.

Do not alter implement or replace parts on the implement 

with other brands. Other brands may not fit properly or 

meet OEM (Original Equipment Manufacturer) 

specifications. They can weaken the integrity and impair the 

safety, function, performance, and life of the implement. 

Replace parts only with genuine OEM parts.

Perform scheduled maintenance. Check for loose 

hardware, missing parts, broken parts, structural cracks, 

and excessive wear. Make repairs before putting implement 

back into service. Serious breakdowns can result in injury 

or death.

Keep everyone away from the Disc Harrow while raising, 

lowering, and transporting the implement to protect against 

falling blade hazard.

Always make sure the tractor is shut off and no one is near 

the tractor when installing stroke control spacers and/or 

transport lock. Also, keep away from possible pinch points 

during installation as the hydraulic lines could burst 

dropping the unit suddenly.

Do not use tires as a step or lean against them. They can 

suddenly move even when they appear to be solidly against 

the ground causing a falling hazard against metal 

protruding objects and sharp disc blades.

Make sure safety labels are in their proper location and are 

in good condition before operating the attached implement. 

Read and obey all instructions on the labels.

Pin drawbar in the fixed center position and make sure 

tractor 3-Point arms are positioned so that they will not 

make contact with the Disc Harrow hitch.

Raise Disc Harrow out of the ground to make sharp turns. 

Do not turn tractor tires into the tongue or frame. Doing this 

can result in loss of control and/or damage the implement. 

Slow down and watch tractor tires carefully when forced to 

make sharp turns.

Do not use implement to lift objects; to pull objects such as 

fence posts, stumps, etc; or to push objects. The unit is not 

designed or guarded for these uses.

Do not use implement to tow other equipment unless it is 

designed with a tow hitch. Doing so can result in loss of 

control and damage the equipment.

Operator’s Responsibilities

Hazard control and accident prevention are dependent 
upon the awareness, concern, prudence, and proper 
training involved in the operation, transport, storage, and 
maintenance of the Disc Harrow. It is absolutely essential 
that no one operates the harrow unless they are age 16 
or older and have read, fully understood, and are totally 
familiar with the Operator’s Manual. Make sure the 
operator has paid particular attention to:

Important Safety Information

, page 1

Section 1: Assembly & Set-up,

 page 8

Section 2: Optional Equipment Set-up,

 page 18

Section 3: Adjustments

, page 22

Section 4: Operating Procedures

, page 25

Section 5: Maintenance & Lubrication

, page 28

Perform the following inspections before using your Disc 
Harrow.

!

DANGER

To avoid serious injury or death:  

Do not allow anyone near the tractor or implement while 

operating. Stop operation if bystanders are too close. They 

can be hit by flying projectiles, become entangled in the 

equipment, or ran over.

Never make contact with underground utilities such as 

electrical power lines, gas lines, phone lines, etc. They can 

cause serious injury or death from electrocution, explosion, 

or fire. If in doubt, call 811 (USA) before digging so that 

they can mark the location of underground services in the 

area. For contact information, see Dig Safe in the 

“Important Safety Information” starting on page 1.

Always secure equipment with solid, non-concrete supports 

before working under it. Never go under equipment 

supported by concrete blocks or hydraulics. Concrete can 

break, hydraulic lines can burst, and/or hydraulic controls 

can be actuated even when power to hydraulics is off.

Operating Checklist

Check

Ref.

Read 

“Important Safety Information”

1

Read all of the “Tractor Hook-up” and 
preparation instructions.

14

Read 

“Section 4: Operating Procedures”

25

Lubricate the harrow as needed. 
Refer t

“Lubrication Points”.

30

Check harrow initially and periodically for 
loose bolts & pins. Pay special attention to disc 
gang hanger bolts and axle nuts. 
Refer to “Torque Values Chart”

.

38

Summary of Contents for Disc Harrows DH3510

Page 1: ...t in French or 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 excep...

Page 2: ...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 w...

Page 3: ...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 Hydrau...

Page 4: ...load 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...

Page 5: ...ldren 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 oper...

Page 6: ...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 s...

Page 7: ...ones 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...

Page 8: ...est 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 compon...

Page 9: ...e of Contents DH3510 DH3512 Disc Harrow 322 251M 12 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...

Page 10: ...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...

Page 11: ...e 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...

Page 12: ...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 ke...

Page 13: ...unt 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...

Page 14: ...ase 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 cylind...

Page 15: ...e 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...

Page 16: ...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...

Page 17: ...tioning 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 Figur...

Page 18: ...h 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 j...

Page 19: ...king 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...

Page 20: ...t 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...

Page 21: ...ed to protect the harnesses from damage Tractor 7 Pin Electrical Outlet Figure 1 11 Hook up LED Lights Refer to Figure 1 10 on page 16 1 Route lead wire harness 4 through spring hose loop 12 2 Connect...

Page 22: ...he back right disc gang and then orient the square bolt holes in the mounting bracket to match the square bolt holes in the mounting bracket shown in the illustration 3 Bolt Type A disc scrapers to sc...

Page 23: ...B Model DH3510 Disc Harrow With Blades Spaced 9 Apart Figure 2 3 Back Right Front Left Scraper Assembly Back Left and Front Right Scraper Assembly Type A 26583 Type B Model DH3512 Disc Harrow With Bl...

Page 24: ...the left side furrow scraper 5 Adjust individual scrapers to be within close contact with disc concave surfaces without touching See Disc Scraper Adjustments on page 23 25997 Center Sweep Assembly Ref...

Page 25: ...s 3 and 1 2 hex locknuts 5 Tighten nuts to the correct torque 3 Mount wheel 1 to hub 7 with five 1 2 20 lug nuts 4 Tighten lug nuts to the correct torque 4 Repeat steps 2 to 6 for the opposite side Si...

Page 26: ...1 Lower Disc Harrow until rear disc blades are almost touching the ground Raise implement slightly and then add stroke control spacers 4 5 to the cylinder rod until rod is full 2 Lower machine until...

Page 27: ...maining bolts 3 and adjust remaining cup scrapers 4B as close to the disc blades as possible without touching 4 Tighten each 1 2 13 GR5 carriage bolt 3 to the correct torque after adjusting the cup sc...

Page 28: ...lp the Disc Harrow to penetrate the soil and remove vegetation However too much angle can cause the Disc Harrow to operate erratically Therefore it is best if the disc gang angles are set at the small...

Page 29: ...c Harrow out of the ground to make sharp turns Do not turn tractor tires into the tongue or frame Doing this can result in loss of control and or damage the implement Slow down and watch tractor tires...

Page 30: ...ctor tires carefully when forced to make sharp turns 1 Raise unit out of the ground to make sharp turns When making sharp turns make sure the tractor tires do not make contact with the Disc Harrow hit...

Page 31: ...adjustment and then reverse the process till your back in action Ground conditions and the finish you require will determine how you position the angles of your front and rear disc gangs Both of the...

Page 32: ...he 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...

Page 33: ...rt oil and grease from areas where paint has been worn chipped or scratched Prime bare metal surfaces after cleaning and repaint to prevent rust Ask your dealer for Land Pride aerosol touch up paint P...

Page 34: ...the bottom of the tube and freezing Spring Washers Spring Bearing Surfaces 2 places Type of Lubrication Silicon Spray Spray silicon on flat washers at both ends of springs to make turning spring adju...

Page 35: ...ration Type of Lubrication Multi purpose Grease 26534 26535 26536 26537 Outside Location Inside Location Axle Top Clamp Half 3 Zerks Type of Lubrication Multi purpose Grease Lower Disc Harrow until wh...

Page 36: ...d ball bearings Number of bearings 12 For all ten foot disc configurations 12 For 9 disc spacing 16 For 7 5 disc spacing Forward gang angle adjustment Single pin adjustment to 15 16 1 2 18 19 1 2 or 2...

Page 37: ...Section 6 Specifications Capacities Table of Contents DH3510 DH3512 Disc Harrow 322 251M 12 7 18 33 Overall Dimensions Figure 6 1 26581...

Page 38: ...sc selection in 20 or 22 disc sizes Lets customers choose a configuration that s just right for their tillage task Greasable triple sealed disc bearing Provides for ease of service and longer bearing...

Page 39: ...Section 7 Features Benefits Table of Contents DH3510 DH3512 Disc Harrow 322 251M 12 7 18 35 This page left blank intentionally...

Page 40: ...educe front disc gang angle by one position Set tractor draw bar in its lowest possible position by flipping the offset drawbar over Add disc furrow fillers to the rear disc gangs See Furrow Filler As...

Page 41: ...Check fit up of all disc components Make sure they are all tight against one another Especially check to make sure end washers and disc blades are on correct Foreign objects that become clamped betwee...

Page 42: ...195 145 310 230 405 300 3 4 10 235 170 360 265 510 375 M18 X 1 5 220 165 350 260 485 355 3 4 16 260 190 405 295 570 420 M20 X 2 5 280 205 440 325 610 450 7 8 9 225 165 585 430 820 605 M20 X 1 5 310 23...

Page 43: ...lso specifically includes failure to properly maintain oil levels grease points and driveline shafts Claims under this Warranty should be made to the dealer which originally sold the product and all w...

Page 44: ...Corporate Office P O Box 5060 Salina Kansas 67402 5060 USA www landpride com...

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