GREAT PLAINS RCR2596, RCR2510 Operator's Manual

Download

Page 1

Table of Contents

22288

Operator Manual

RCR2596 & RCR2510

Rotary Cutters

Manufacturing, Inc.

www.greatplainsmfg.com

Read the operation 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.

ORIGINAL INSTRUCTIONS

5/26/16

327-147M

Page 2

Table of Contents

Important Safety Information . . . . . . . . . . . . . 1

Safety at All Times . . . . . . . . . . . . . . . . . . . . . . . . . 1

Look For The Safety Alert Symbol . . . . . . . . . . . . . . 1

Safety Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Owner Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Section 1: Assembly & Set-up . . . . . . . . . . . 10

Tractor Requirements . . . . . . . . . . . . . . . . . . . . . . 10

Weight & Horsepower . . . . . . . . . . . . . . . . . . . . 10

PTO Type & Speed . . . . . . . . . . . . . . . . . . . . . . 10

Pull-Type Hitch . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3-Point Hitch . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Dealer Preparations . . . . . . . . . . . . . . . . . . . . . . . 10

Torque Requirements . . . . . . . . . . . . . . . . . . . . . . 11

Gearbox Vent Plugs & Dipsticks . . . . . . . . . . . . . . 11

Vent Plug Installation . . . . . . . . . . . . . . . . . . . . . 11

Pull-Type Cutter . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Hitch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 12

Equal Angle Driveline Installation . . . . . . . . . . . . 13

Constant Velocity Driveline Installation . . . . . . . 14

Pull-Type Tractor Hook-Up . . . . . . . . . . . . . . . . . 15

3-Point Lift-Type Cutter . . . . . . . . . . . . . . . . . . . . . 16

Hitch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 16

Driveline Installation . . . . . . . . . . . . . . . . . . . . . . . 16

3-Point Tractor Hook-Up . . . . . . . . . . . . . . . . . . 17

Driveline Hook-up to Tractor PTO . . . . . . . . . . . . . 18

Check Driveline Collapsible Length . . . . . . . . . . 18

Shorten Driveline . . . . . . . . . . . . . . . . . . . . . . . . 18

Check Driveline Interference . . . . . . . . . . . . . . . 19

Check Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Section 2: Assembly of Optional Equipment 20

Chain Safety Guards (Optional) . . . . . . . . . . . . . . 20

Rubber Safety Guards (Optional) . . . . . . . . . . . . . 21

Section 3: Adjustments . . . . . . . . . . . . . . . . . 22

Pull-Type Leveling & Cutting Height . . . . . . . . . . . 22

Deck Leveling From Front to Back . . . . . . . . . . . 22

Pull-Type Cutting Height . . . . . . . . . . . . . . . . . . 22

3-Point Leveling & Cutting Height . . . . . . . . . . . . . 23

Deck Leveling From Left to Right . . . . . . . . . . . . 23

Deck Leveling From Front to Rear . . . . . . . . . . . 23

Center Link Adjustment . . . . . . . . . . . . . . . . . . . 23

Tailwheel Height Adjustment . . . . . . . . . . . . . . . 24

Section 4: Operating Procedures . . . . . . . . . 25

Operating Checklist . . . . . . . . . . . . . . . . . . . . . . . . 25

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . 25

Inspection of Tractor & Cutter . . . . . . . . . . . . . . . . 26

Transporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Blade Engagement & Disengagement . . . . . . . . . . 27

Blade Engagement . . . . . . . . . . . . . . . . . . . . . . . 27

Blade Disengagement . . . . . . . . . . . . . . . . . . . . 27

Field Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Turning Angles for Pull-Type Cutters . . . . . . . . . . . 28

Crossing Steep Ditches & Banks . . . . . . . . . . . . . . 29

Unhook 3-Point Cutter . . . . . . . . . . . . . . . . . . . . . . 29

Unhook Pull-Type Cutter . . . . . . . . . . . . . . . . . . . . 29

General Operating Instructions . . . . . . . . . . . . . . . 30

Section 5: Maintenance & Lubrication . . . . . 31

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Tire Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Cutter Blade Maintenance . . . . . . . . . . . . . . . . . . . 32

Slip-Clutch Protected Drivelines . . . . . . . . . . . . . . 33

Skid Shoe Maintenance . . . . . . . . . . . . . . . . . . . . . 34

RCR2596 Dual End Flex Couplers . . . . . . . . . . . . 35

RCR2510 Dual End Flex Couplers . . . . . . . . . . . . 35

Tractor Maintenance . . . . . . . . . . . . . . . . . . . . . . . 36

Long Term Storage . . . . . . . . . . . . . . . . . . . . . . . . 36

Ordering Replacement Parts . . . . . . . . . . . . . . . . . 36

Lubrication Points . . . . . . . . . . . . . . . . . . . . . . . . . 37

3-Point Tailwheel Spindle Tube . . . . . . . . . . . . . 37

Tailwheel Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Pillow Block Bearing (Pull-Type Cutter) . . . . . . . 37

Ratchet Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

T-Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Dual End Flex Coupler . . . . . . . . . . . . . . . . . . . . 38

Driveline U-Joints . . . . . . . . . . . . . . . . . . . . . . . . 39

CV Driveline U-Joints & Profile Shields . . . . . . . 39

Driveline Profiles With Grease Zerk . . . . . . . . . . 39

Driveline Profiles Without Grease Zerk . . . . . . . . 39

Section 6: Specifications & Capacities . . . . . 40

Section 7: Features and Benefits . . . . . . . . . 43

Section 8: Troubleshooting . . . . . . . . . . . . . . 44

Section 9: Torque & Tire Inflation Charts . . . 45

Section 10: Warranty . . . . . . . . . . . . . . . . . . . 47

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.

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.

RCR2596 & RCR2510 Rotary Cutters 327-147M

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.

Brand and Product Names that appear and are owned by others are trademarks of their respective owners.

Printed in the United States of America

5/26/16

Page 3

▲

Table of Contents

Important Safety Information

These are common practices that may or may not be applicable to the products described in this manual.

Safety at All Times

Thoroughly read and understand the instructions given in this manual before operation. Refer to the “Safety Label” section, read all instructions noted on them.

Do not allow anyone to operate

uipment who has not fully

this eq read and comprehended this manual and who has not been properly trained in the safe operation of the equipment.

▲ The operator must not use drugs

or alcohol as they can change the alertness or coordination of that person while operating equipment. The operator should, if taking overthe-counter drugs, seek medical advice on whether he/she can safely operate the equipment.

▲ Operator must start tractor and

operate controls from the driver’s seat only. Never from the ground.

▲ Operator should be familiar with all

functions of the tractor and attachments, and be able to handle emergencies quickly.

▲ Make sure all guards and shields

are in place and secured before operating implement.

▲ Keep all bystanders away from

equipment and work area.

▲ Do not leave tractor or implement

unattended with engine running.

▲ Dismounting from a moving tractor

can cause serious injury or death.

▲ 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.

▲ Watch out for fences, trees, rocks,

wires, etc., while operating and transporting implement.

▲ Turning tractor too tight may cause

hitched machinery to ride up on wheels. This could result in injury or equipment damage.

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.

Be Aware of  Signal Words

A Signal word designates a degree or level of hazard seriousness. The signal words are:

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.

For Your Protection

▲ Thoroughly read and understand

the “Safety Label” section, read all instructions noted on them.

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.

Tractor Shutdown & Storage

▲ If engaged, disengage PTO. ▲ Lower attached implement to

ground, put tractor in park or set park brake, turn off engine, and remove switch key to prevent unauthorized starting.

▲ Wait for all components to come to

a complete stop before leaving the operator’s seat.

▲ Detach and store implement in an

area where children normally do not play. Secure implement using blocks and supports.

OFF

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 4

Table of Contents

Important Safety Information

These are common practices that may or may not be applicable to the products described in this manual.

Use Safety  Lights and Devices

▲ Slow moving tractors, 

self-propelled equipment, and towed implements can create a hazard when driven on public roads. They are difficult to see, especially at night.

▲ Flashing warning lights and turn

signals are recommended whenever driving on public roads.

Transport  Machinery Safely

▲ Comply with 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 trailer

to swerve and upset. Reduce speed if trailer is not equipped with brakes.

▲ Avoid contact with any over head

utility lines or electrically charged conductors.

▲ Engage park brake when stopped

on an incline.

▲ Maximum transport speed for an

attached implement 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 an attached implement:

20 mph when weight of attached implement is less than or equal to the weight of machine towing the implement.

10 mph when weight of attached implement exceeds weight of machine towing implement but not more than double the weight.

▲ IMPORTANT: Do not tow a load

that is more than double the weight of the machine towing the load.

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 machinery.

▲ Attach the chain to the tractor

drawbar support or other specified anchor location. Allow only enough slack in the chain to permit turning.

▲ Do not use safety chain for towing.

Practice Safe Maintenance

▲ Understand procedure before doing

work. Use proper tools and equipment, refer to Operator’s Manual for additional information.

▲ Work in a clean dry area. ▲ Lower attached implement to the

ground, put tractor in park, turn off engine, and remove key before performing maintenance.

▲ Allow implement to cool before

working on it.

▲ Disconnect battery ground cable (-)

before servicing or adjusting electrical systems or before welding on implement.

▲ Do not grease or oil implement

while it is in operation.

▲ Inspect all parts. Make certain

parts are in good condition & installed properly.

▲ Replace parts on this machine with

genuine Great Plains parts only. Do not alter this machine in a way which will adversely affect its performance.

▲ Remove buildup of grease, oil, or

debris.

▲ Remove all tools and unused parts

from implement before operation.

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 5

Table of Contents

Important Safety Information

These are common practices that may or may not be applicable to the products described in this manual.

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

Wear  Protective Equipment

▲ 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 radio headphones while operating machinery.

Avoid High  Pressure Fluids Hazard

▲ Escaping fluid under pressure can

penetrate the skin causing serious injury.

▲ Avoid the hazard by relieving

pressure before disconnecting hydraulic lines or performing work on the system.

▲ 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.

Tire Safety

▲ Tire changing can be dangerous

and should be preformed by trained personnel using the correct tools and equipment.

▲ 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.

▲ When removing and installing

wheels, use wheel handling equipment adequate for the weight involved.

Use Seat Belt and ROPS

▲ Operate only tractors equipped

with a Roll-Over Protective Structure (ROPS) and seat belt.

▲ Keep folding ROPS in the “locked

up” position at all times.

▲ Fasten seat belt snugly and

securely to help protect against serious injury or death from falling and machine overturn.

▲ Wear protective equipment such

as a hard hat, safety shoes, safety glasses, and ear plugs.

Keep Riders Off Machinery

▲ Never carry riders or use

machinery as a person lift.

▲ Riders obstruct operator’s view. ▲ Riders could be struck by foreign

objects or thrown from the machine.

▲ Never allow children to operate

equipment.

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 6

Important Safety Information

22288

Table of Contents

Safety Labels

Your Rotary Cutter comes equipped with all safety labels in place. They are 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

maged or missing labels. Order new labels from your

da nearest Great Plains dealer. To find your nearest dealer, visit

our dealer locator at

3. Some new equipment installed during repair requires safety labels to be aff

www.greatplainsmfg.com.

ixed to the replaced component as

specified by Great Plains’. When ordering new components make s 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

h a similar type of straight edge.

wit

ure the correct safety labels are

818-130C

Caution: Use with 540 RPM PTO only



838-615C

2" x 9" Amber Reflector 1 place: Front left side of deck only

838-614C

2" x 9" Red Reflector 2 places: Rear left side and rear right side of deck

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 7

Important Safety Information

ROTATING DRIVELINE

KEEP AWAY!

22288

22297

Table of Contents

818-830C

Safety Combo

818-552C

Danger: Rotating Driveline

5/26/16

818-543C

Danger: Guard Missing

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 8

Important Safety Information

22288

Table of Contents

818-564C

Danger: Rotating Blades - Keep Away

RCR2596 & RCR2510 Rotary Cutters 327-147M

818-556C

Danger: Thrown Object Hazard

818-142C

Danger: Rotating Driveline Hazard - Keep Away

5/26/16

Page 9

Important Safety Information

ROTATING DRIVELINE

KEEP AWAY!

22288

22296

33016

Table of Contents

838-094C

Warning: High Pressure

818-540C

Danger: Guard Missing - Do Not Operate

818-552C

Danger: Rotating Driveline

Hazard - Keep Away

5/26/16

818-681C

Notice: 20 MPH Maximum Travel Speed Located on Pull-Type Hitch and All Gauge Wheels

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 10

Table of Contents

IMPORTANT: A special point of information related

to the following topic. Great Plains’ 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.

39207

Introduction

Great Plains welcomes you to the growing family of new product owners.

This Rotary Cutter 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 machine.

Application

The standard utility duty RCR2596 and RCR2510 Series Rotary Cutters are designed and built by Great Plains to provide excellent cutting performance on gently sloping or slightly contoured right-of-ways, pastures, set-asideacres, and row crop fields. Their eight and ten foot cutting widths, 2" to 12" cutting height and ability to cut weeds and brush up to 1 1/2" diameter make them well suited for these applications.

The RCR2596 and RCR2510 cutters operate at a PTO speed of 540 rpm. A category four equal angle driveline is available on both models and a category four constant velocity driveline is available on only the RCR2510 model.

Pull-type and three-point type hitches are available. The RCR2596 is designed for a category I or II three-point hitch and the RCR2510 is designed for a category II or III three-point hitch. All three-point hitches are Quick-Hitch adaptable. The RCR2596 three-point hitch requires a 50110 HP tractor and the Pull-type hitch requires a 40-110 HP tractor. The RCR2510 three-point hitch requires a 60110 HP tractor and 50-110 HP for Pull-type.

Stump jumpers, main driveline slip-clutches, and outboard flex couplers are also offered for driveline and gearbox protection. Safety shields around the cutter are offered in either chain or rubber.

See “Specifications & Capacities” on page 40 and “Features & Benefits” on page 43 for additional information and performance enhancing options.

Definitions

Owner Assistance

The Online Warranty Registration should be completed by the dealer at the time of purchase. This information is necessary to provide you with quality customer service.

The parts on your Rotary Cutter have been specially designed by Great Plains and should only be replaced with genuine Great Plains parts. Contact a Great Plains dealer if customer service or repair parts are required. Your Great Plains dealer has trained personnel, repair parts, and equipment needed to service the implement.

Serial Number

Model No. _____________Serial No. _______________

For quick reference and prompt service, record model number and serial number in the spaces provided above and again on warranty page 47. Always provide model number and serial number when ordering parts and in all correspondences with your Great Plains dealer. Refer to Figure 1 for location of your serial number plate.

Using This Manual

This Operator’s Manual is designed to help familiarize

•

you 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.greatplainsmfg.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.

RCR2596 & RCR2510 Rotary Cutters 327-147M

Serial Number Plate Location

Figure 1

5/26/16

Page 11

Table of Contents

Introduction

Further Assistance

Your dealer wants you to be satisfied with your new Cutter. 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 the matter with your dealership service manager making sure that person is aware of any problems you may have and has had the opportunity to assist you.

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:

Great Plains

Service Department

P.O. Box 5060

Salina, KS 67402-5060

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 12

Table of Contents

WARNING

IMPORTANT: PTO damage may occur if distances

“A” and “B” are not properly maintained.

22273

Section 1: Assembly & Set-up

Tractor Requirements

Weight & Horsepower

Tractor horsepower and weight must be capable of controlling the cutter under all operating conditions. Tractors outside the horsepower range must not be used.

RCR2596 cutters

Three-point . . . . . . . . . . . . . . . . . . . . . . . 50-110 HP

Pull-type . . . . . . . . . . . . . . . . . . . . . . . . . 40-110 HP

R1CR2510 cutters

Three-point . . . . . . . . . . . . . . . . . . . . . . . 60-110 HP

Pull-type . . . . . . . . . . . . . . . . . . . . . . . . . 50-110 HP

Ballast weights may need to be added to your tractor to maintain steering control. Refer to your tractor operator’s manual to determine proper ballast requirements.

Tractor Requirement

Horsepower. . . . . . . . . . . . . . . . . . . . . . . . . . 55 HP

PTO Type & Speed

Tractor’s rear power take-off (PTO) speed and spline type must be capable of matching the cutter’s PTO type and speed.

RCR2596 and RCR2510 cutters

540 RPM 1 3/8"-6 spline rear power take-off

Pull-Type Hitch

Refer to Figure 1-1:

Distances between center of drawbar hitch pin hole to end of tractor PTO shaft (“A” dimension) and from top of drawbar hitch to center of PTO shaft (“B” dimension) must be maintained when using the Pull-type hitches.

• “A” = 14"

• “B” = 8"

3-Point Hitch

The lower 3-point arms of the 3-point hitch must be stabilized to prevent side-to-side movement. Most tractors have sway blocks or adjustable chains for this purpose. Category of hitch is dependent upon the series of cutter being used.

• RCR2596 (Category l or ll hitch)

• RCR2510 (Category ll or lll hitch)

Dealer Preparations

Read and understand the operator’s manual for your cutter. An understanding of how it works will aid in the assembly and setup of your cutter.

This Rotary Cutter has been partially assembled at the factory. However, some assembly will be necessary to attach the hitch, driveline, and guards to the cutter.

It is best to go through the Assembly Checklist before assembling the cutter. Speed up your assembly task and make the job safer by having all the needed parts and equipment readily at hand.

Assembly Checklist

Check Reference

Fasteners and pins that were shipped with the cutter. NOTE: All hardware from the factory has been installed in the location where it will be used. If a part or fastener is temporarily removed for assembly reasons, remember where it goes.Keep the parts separated.

Be sure the parts get used in the correct location. By double checking while you assemble, you will lessen the chance of using a bolt incorrectly that may be needed later.

Operator’s  Manual

PTO to Drawbar Distances

Figure 1-1

RCR2596 & RCR2510 Rotary Cutters 327-147M

All grease fittings are in place and lubricated.

Safety labels are correctly located and legible. Replace if damaged.

Inflate tires to specified PSI air pressure. Tighten wheel bolts to specified torque.

Red and amber reflectors are correctly located and visible when the cutter is in the transport position.

Have a minimum of 2 people at hand while assembling the cutter.

Have a fork lift or loader along with chains and safety stands that are sized for the job ready for the assembly task.

Section 5 Page 32

Safety Information Page 1

Section 8 Page 40

Safety Information Page 1

Operator’s  Manual

5/26/16

Page 13

Table of Contents

IMPORTANT: Rotary Cutters are shipped with a

solid plug in the gearbox to prevent loss of oil during shipping and handling. The solid plug on top of the gearbox must be replaced with a vented dipstick. Do not operate cutter without vented dipstick installed.

22320

Remove 3/8" T-Box Solid

Plug & Install Vent Plug

DO NOT OVERFILL!

30216

DO NOT

OVERFILL!

Oil Level Plug

Remove 3/8" Solid Plug &

Install Vent Plug

Section 1: Assembly & Set-up

Torque Requirements

Refer to “Torque Values Chart” on page 45 to determine correct torque values for common bolts. See “Additional Torque Values” at bottom of chart for exceptions to standard torque values.

Gearbox Vent Plugs & Dipsticks

Vent Plug Installation

Refer to Figure 1-2 & Figure 1-3:

Vent plugs are shipped loose and packaged with the Operator’s Manual. Remove temporary solid plugs on top of gearboxes and replace with included 3/8" vent plug. See your nearest Great Plains dealer if vent plugs are missing.

T-Gearbox

Figure 1-2

Blade Drive Gearboxes

Figure 1-3

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 14

Section 1: Assembly & Set-up

NOTE: Do not tighten hardware to the correct torque until assembly is complete.

NOTE: If preferred, the front guards may be assembled first. See “Assembly of Optional Equipment” on page 20 for front guard assembly instructions.

22302

22290

Table of Contents

Pull-Type Cutter

Hitch Assembly

Refer to Figure 1-4 for RCR2596 hitch assembly and Figure 1-5 for RCR2510 hitch assembly:

1. Assemble tongue (#1) to the deck using hitch  pins (#2), spacer tubes (#3) and linchpins (#4).

2. Attach level rod assemblies (#8) to tongue (#1) using clevis pins (#5), flat washers (#6) and cotter  pins (#7). Make sure level rod adjusting nuts are threaded the same distance on both rods. This will ensure a level unit.

3. Remove hydraulic hose holder (#9) from the hitch and install to the cutter deck with 3/4" x 1 1/2" GR5 hex head cap screw (#12) and 3/4" hex locknut (#13) as shown. Tighten mounting bracket hardware as needed to secure hose holder in place.

4. Route hydraulic hose through the hose holder loop.

5. Remove parking jack (#10) from its storage position on the deck and attach to the tongue (#1). Secure with attached pin (#11). Adjust jack to desired height.

RCR2596 Hitch Assembly

Figure 1-4

RCR2596 & RCR2510 Rotary Cutters 327-147M

RCR2510 Hitch Assembly

Figure 1-5

5/26/16

Page 15

Section 1: Assembly & Set-up

NOTE: Make sure locking collar on bearing (#3) is facing rearward toward the cutter gearbox.

22303

WARNING

IMPORTANT: Maximum equal angle driveline

turning angle is limited to 35 degrees.

IMPORTANT: The drivelines must be lubricated before putting them into service. Refer to

“Lubrication Points” on page 37.

Table of Contents

Equal Angle Driveline Installation

Refer to Figure 1-6:

Equal angle drivelines can be installed on RCR2596 and RCR2510. Maximum turning angle is limited to 35 degrees.

Make certain all driveline yokes are securely fastened at both ends. A loose yoke can work free allowing the driveline to rotate uncontrollably causing machine damage and bodily injury or death to anyone nearby.

1. Unsnap one end of gearbox shield access doors (#7) and rotate doors open.

2. Remove protective sleeve (#11) from input shaft of gearbox (#1) and discard.

3. Remove nuts (#10), lock washers (#9), and clamp  bolts (#8) from slip-clutch end of driveline (#2).

4. Slide slip-clutch end of driveline onto gearbox input shaft until hole in yoke aligns with notch in shaft.

5. Insert 2- bolts (#10) through holes in driveline yoke as shown and secure with lock washers (#9) and  nuts (#10). Tighten bolts to 45-50 ft-lbs of torque.

6. Push/pull on driveline yoke to be sure it is securely fastened to the gearbox shaft.

7. Insert jackshaft of driveline (#2) through bearing support assembly (#3). Pull bearing support assembly fully against driveline (#2) to extend jackshaft splines fully through the bearing.

8. Attach main driveline (#4) to jackshaft of  driveline (#2) by pulling on locking collar and pushing driveline yoke forward onto the jackshaft until locking collar has locked in place. Push/pull on driveline yoke to be sure it is securely fastened to jackshaft (#2).

9. Tighten set screw in bearing locking collar (#3).

10. Rotate gearbox shield access doors (#7) closed and snap in place.

5/26/16

RCR2596 & RCR2510

Equal Angle Driveline Assembly

Figure 1-6

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 16

Table of Contents

22304

WARNING

IMPORTANT: Maximum constant velocity driveline

turning angle is limited to 80 degrees.

IMPORTANT: The drivelines must be lubricated before putting them into service. Refer to

“Lubrication Points” on page 37.

NOTE: Do not tighten hardware until assembly or

driveline is complete.

NOTE: Make sure locking collar on bearing (#7) is facing forward toward the tractor.

Section 1: Assembly & Set-up

Constant Velocity Driveline Installation

Refer to Figure 1-7:

Constant velocity driveline can be installed on the RCR2510 cutter only. Maximum turning angle is limited to 80 degrees.

1. Unsnap one end of gearbox shield access doors (#7) and rotate doors open.

2. Remove protective sleeve (#11) from input shaft of gearbox (#1) and discard.

3. RCR2510 only: Remove 2-nuts (#10), 2-lock washers (#9), and 2-bolts (#8) from slip-clutch end of driveline (#2). Slide slip-clutch end of driveline onto input shaft of gearbox (#6) until hole in yoke aligns with notch in input shaft.

4. RCR2510 only: Insert 2-bolts (#10) through holes in driveline yoke as shown and secure with lock washers (#9) and nuts (#10).

5. Tighten nut (#10) to 45-50 ft-lbs of torque.

6. Push/pull on driveline yoke to be sure it is securely fastened to the gearbox shaft.

7. Rotate gearbox shield access doors (#7) closed and snap in place.

8. Fully insert jackshaft driveline (#1) into pillow block bearing (#7).

9. Secure bearing support (#2) with 1/2"-13 x 3 1/2" bolts (#3) and hex flange nuts (#4). Do not tighten nuts (#4) at this time.

10. Remove lock nut (#12) and bolt (#13) from bolted coupler end of driveline (#5).

11. Push bolted coupler end of main driveline (#5) onto the jackshaft of driveline (#1) as far as possible.

12. Attach driveline (#5) to jackshaft driveline with removed bolt (#13) and lock nut (#12). Tighten lock nut to 45-50 ft-lbs of torque.

13. Tighten nuts (#4) to the proper torque.

14. Rotate locking collar in bearing (#7) clockwise until tight.

15. Tighten set screw in bearing (#7) locking collar.

RCR2510 Constant Velocity Driveline Assembly

RCR2596 & RCR2510 Rotary Cutters 327-147M

Figure 1-7

5/26/16

Page 17

Section 1: Assembly & Set-up

DANGER

WARNING

IMPORTANT: Jack attachment pin must be fully

inserted and secured before working on or around a cutter not hooked to the tractor drawbar.

NOTE: Length of leveling rod couplers may need adjusting to obtain correct drawbar height. See “Pull-Type Leveling & Cutting Height” on page 22

22310

RCR2510 jack storage location shown with arrow. Jack storage location is on the deck top for RCR2596 cutters.

Table of Contents

Pull-Type Tractor Hook-Up

Refer to Figure 1-8:

A Crushing Hazard exists when hooking-up equipment to a tractor. Do not allow anyone to stand between tractor and implement while backing-up to implement. Do not operate hydraulic 3-point lift controls while someone is directly behind tractor or near implement.

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for blades to come to a complete stop before dismounting tractor.

Distances between center of drawbar hitch pin hole to end of tractor PTO shaft and from top of drawbar hitch to center of PTO shaft must be maintained when using  Pull-type hitches. See “Pull-Type Hitch” on page 10 for correct distances.

1. Make certain jack stand (#1) is properly attached to cutter hitch and secured with attachment pin (#2).

2. Back tractor within close proximity of cutter  clevis (#6).

3. Raise or lower jack (#1) to align clevis (#6) with tractor drawbar. Drawbar should fit between lower and upper plates of clevis.

4. Back tractor up to cutter hitch until holes in the drawbar and clevis (#6) are aligned.

5. Insert 1" flat washers (#5) above and below tractor drawbar.

6. Insert 1" -8 x 4 1/2" GR5 hex bolt (3) through top of clevis (#6), 1" washer (#5), tractor drawbar, remaining 1" washer (#5), and through bottom plate in clevis (#6). Secure bolt with locknut (#4). Tighten locknut snugly to remove all play and then back nut one-quarter turn.

7. Attach pull collar end of driveline (#8) to tractor PTO shaft. Secure with locking device. Pull on both ends of the driveline to make sure it is secured to the tractor and gearbox shafts.

8. Thread hydraulic hose (#9) through spring hose  loop (#10 ) and attach to tractor hydraulic outlet.

9. Lower park jack (#1)until cutter hitch weight is supported by tractor drawbar, remove detent pin (#2), and park jack (#1).

10. Store park jack (#1) on the cutter deck with detent pin as shown.

Safety Chain

Refer to Figure 1-8:

When towing implements on the road, use safety  chain (#7) to contain the implement should the hitch pin become lost. After attaching the safety chain to the tractor, check chain length by driving the tractor to the right and to the left for a short distance. If necessary,  re-adjust chain length to eliminate a tight or loose chain. Make sure the chain hook is securely locked in place when finished.

5/26/16

Pull-Type Tractor Hook-Up

Figure 1-8

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 18

Section 1: Assembly & Set-up

NOTE: Do not tighten hardware until assembly of hitch and driveline is complete. Refer to “Torque Val ues Char t” on page 45.

22289

Table of Contents

3-Point Lift-Type Cutter

Hitch Assembly

Refer to Figure 1-9:

1. Insert 5/8" long bushings (#22) into the bottom holes of A-Frame hitch plates (#2) and attach hitch plates to the lower bolt holes of the 3-point hitch plates with  3/4"-10 x 2" GR5 bolts (#10), flat washers (#17), and lock nuts (#14).

2. Place 2" long bushing (#6) between the two  A-Frame hitch plates and insert 1"-8 x 4 1/2" GR5 cap screw (#11) through the A-Frame hitch plate holes and bushing. Secure bolt with lock nut (#15).

3. Attach the two short braces (#7) on rear brace assembly (#1) between the back two holes in the  A-Frame hitch with clevis pin (#20). Secure clevis pin with flat washer (#18) and cotter pin (#19).

4. Attach the two longer braces (#4) on rear brace assembly (#1) to the front hole of the lug welded behind the gearbox mount with 1"-8 x 3" GR5 cap screw (#12) and lock nut (#15).

5. Assemble rear braces (#5) to the inside of inner rear lugs with 3/4"-10 x 1 3/4 GR5 cap screws (#13) and lock nuts (#14).

6. Install remaining clevis pin (#20), flat washer (#18), and cotter pin (#19) in the top front holes in the  A-Frame hitch as shown.

7. Attach driveline hook (#8) to A-frame (#3) using 5/16"-18 x 1 1/4" bolt (#9) and lock nut (#16).

8. Tighten all assembled hardware to the correct torque.

Driveline Installation

Refer to Figure 1-9:

1. Unsnap one end of gearbox shield access doors and rotate doors open.

2. Remove protective sleeve from gearbox input shaft.

3. Remove nut (#26), lock washer (#25), and clamp  bolt (#24) from slip-clutch end of driveline.

4. Slide slip-clutch end of driveline onto gearbox input shaft until hole in yoke aligns with notch in shaft.

5. Insert clamp bolt (#24) through hole in yoke and secure with lock washer (#25) and nut (#26). Tighten nut to the correct torque.

6. Push/pull on driveline yoke to be sure it is securely fastened to the gearbox shaft.

7. Rotate gearbox shield access doors closed and snap in place.

8. Collapse driveline (#21) by pushing on tractor end of driveline toward the gearbox.

9. Support driveline on driveline support hook (#8).

Lift Type Cutter 3-Point Assembly

RCR2596 & RCR2510 Rotary Cutters 327-147M

Figure 1-9

5/26/16

Page 19

Section 1: Assembly & Set-up

22293

37298

DANGER

WARNING

Table of Contents

3-Point Tractor Hook-Up

Refer to Figure 1-10:

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for blades to come to a complete stop before dismounting tractor.

1. Locate cutter on a flat level surface.

2. Determine the hitch category of the tractor that will be used:

a. Category I tractors will have a lower 3-point hitch

hole diameter of 7/8". The top link hole diameter (cutter end) will be 3/4".

b. Category II tractors will have a lower 3-point hitch

hole diameter of 1 1/8". The top link hole diameter (cutter end) will be 1".

c. Category III tractors will have a lower 3-point

hitch hole diameter of 1 7/16". The top link hole diameter (cutter end) will be 1 5/16".

3. Remove lower linchpins (#1) and hitch pins (#2) from lower clevises. Remove upper cotter pin (#5), flat washer (#7), and hitch pin (#6) from upper clevis.

4. Slowly back the tractor up to the cutter while using the tractor’s 3-point hydraulic control lever to align lower 3-point arm hitch holes with hitch pin holes in the cutter’s lower clevis The lower 3-point lift arms of

a Category 1 tractor will be positioned outside the lower hitch holes “B” on RCR2596 cutters.

5. Attach cutter to lower 3-point lift arms as follows:

RCR2596 With Cat. I Tractor Hitch

a. Discard bushings (#3 & #4).

b. Insert hitch pins (#2A) through hitch hole “A” first

and then hitch hole “B”.

c. Slide lower 3-point lift arm hitch holes over end of

hitch pins (#2A).

RCR2596 With Cat. II Tractor Hitch

a. Discard bushings (#3 & #4).

b. Insert hitch pins (#2A) through hitch hole “A”, lower

3-point arm hitch holes, and then hitch hole “B”.

RCR2510 With Cat. II Tractor Hitch

a. Discard bushing (#3).

b. Insert hitch pins (#2B) through hitch hole “B”, lower

3-point arm hitch holes, bushing (#4), and then hitch hole “A”.

RCR2510 With Cat. III Tractor Hitch

a. Place bushing (#3) inside lower 3-point lift arm

hitch holes.

b. Insert hitch pins (#2B) through lower hitch 

hole “B”, bushing (#3), bushing (#4), and then through hitch hole “A”.

6. Secure hitch pins (#2A or #2B) with linchpins (#1).

7. Connect top center 3-point link to the upper pivot hitch using 1" clevis pin (#6), flat washer (#7), and cotter pin (#5). Bend on or both legs of cotter pin to prevent it from falling out.

8. The center 3-point link should be adjusted to allow for lateral float. Please consult you tractor’s manual for adjusting instructions.

5/26/16

3-Point Lift Type Cutter Tractor Hook-Up

Figure 1-10

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 20

Section 1: Assembly & Set-up

DANGER

WARNING

IMPORTANT: An additional driveline may be

required if cutter is to be used on more than one tractor, especially if a Quick Hitch is used.

The driveline must be lubricated before putting it into

service. Refer to “Lubrication Points” on page 37.

The tractor’s PTO shaft and cutter gearbox shaft must be aligned and level with each other when hooking-up the driveline to the tractor.

IMPORTANT: A driveline that is too long can bottom out causing structural damage to tractor and cutter. Always check driveline collapsed length during initial setup, when connecting to a different tractor, and when alternating between using a quick hitch and a standard 3-point hitch. More than one driveline may be required to fit all applications.

Table of Contents

Driveline Hook-up to Tractor PTO

Do not engage tractor PTO while hooking-up and unhooking driveline or while someone is standing near the driveline. A person’s body and/or clothing can become entangled in the driveline resulting in serious injury or death.

All guards and shields must be installed and in good working condition at all times during cutter operation.

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for blades to come to a complete stop before dismounting tractor.

Do not over-speed PTO or machine breakage may result. Some tractors are equipped with multispeed PTO ranges. Be certain your tractor’s PTO is set for the cutter’s rated PTO speed. See Specifications & Capacities for rated PTO speed.

Do not use a PTO adapter. A PTO adapter will increase strain on the tractor’s PTO shaft resulting in possible damage to shaft and driveline. It will also defeat the purpose of the tractor’ s master shield and could cause bodily injury or death.

1. Park tractor on a level surface. Slowly engage tractor 3-point lift lever to raise cutter until gearbox shaft is in line (level) with tractor PTO shaft.

2. Support cutter deck at this height with support jacks or blocks to keep cutter from drifting down.

3. Place gear selector in park, set park brake, shut tractor off, and remove switch key.

Refer to “Figure 1-10” on page 17:

4. Pull back on driveline yoke collar (#12) and push driveline yoke onto the tractor PTO shaft. Release pull collar and continue to push driveline yoke forward until pull collar locks in place.

5. Move driveline yoke back and forth several times to make sure yoke is locked in place.

RCR2596 & RCR2510 Rotary Cutters 327-147M

6. If driveline yoke locks in place, skip to “Check Driveline Interference” on page 19.

7. Continue with “Check Driveline Collapsible Length” below.

Check Driveline Collapsible Length

1. Make sure driveline is properly installed and level before checking driveline collapsible length. (Refer to “Driveline Hook-up to Tractor PTO” instructions on page 18.)

Refer to Figure 1-11 on page 19:

2. With driveline level, measure (“B” dimension) back from universal joint shield to end of outer driveline shield as shown in Figure 1-12.

3. If measurement is 1" or more, skip to “Check Driveline Interference” on page 19. If measurement is less than 1", shorten driveline using instructions provided below.

Shorten Driveline

Refer to Figure 1-11 on page 19:

Be sure to first check driveline collapsible length above. If required, shorten driveline as follows:

1. Unhook driveline from tractor PTO shaft and pull outer and inner drivelines apart.

2. Reattach outer driveline to tractor PTO shaft. Pull on inner and outer drivelines to be sure universal joints are properly secured.

3. Hold inner and outer drivelines parallel to each other:

a. Measure 1" (“B” dimension) back from outer

driveline universal joint shield and make a mark at this location on the inner driveline shield.

b. Measure 1" (“B” dimension) back from the inner

driveline universal joint shield and make a mark at this location on the outer driveline shield.

4. Remove driveline from tractor and gearbox shafts.

5. Measure from end of inner shield to scribed mark (“X” dimension). Cut off inner shield at the mark. Cut same amount off the inner shaft (“X1” dimension).

6. Measure from end of outer shield to scribed mark (“Y” dimension). Cut off outer shield at the mark. Cut same amount off the outer shaft (“Y1” dimension).

7. Remove all burrs and cuttings.

8. Apply multi-purpose grease to the inside of the outer shaft and reassemble driveline.

5/26/16

Page 21

Table of Contents

22311

IMPORTANT: Avoid premature driveline breakdown. A driveline that is operating must not exceed an angle of 25 degrees up or down while operating 3point lift.

24872

NOTE: For additional safety in transport, raise cutter as high as possible, and shorten check chains to prevent inadvertent falling in transport.

22314

Section 1: Assembly & Set-up

Driveline Shortening

Figure 1-11

9. Reattach driveline to cutter and tractor. Refer to “Driveline Hook-up to Tractor PTO” on page 18.

10. Continue with “Check Driveline Interference”.

Check Driveline Interference

1. Make certain driveline yokes are properly attached.

2. Start tractor and raise cutter up just enough to remove support blocks. Remove support blocks.

3. Slowly engage tractor hydraulic 3-point control lever to lower cutter while checking for sufficient drawbar clearance. Move drawbar ahead, aside, or remove if required.

Refer to Figure 1-12:

Check Chains

For 3-Point Mount Cutters

(Available through Great Plains parts department.)

Refer to Figure 1-13:

Check chains are used to control the cutting height and allow the mower to be lowered to the same preset cutting height effortlessly.

1. Install lower end of check chain (#1) to the inner hitch ear as shown in Figure 1-13, using 3/4"-10 x 1 1/2 long bolts (#2), lock washers (#3), and nuts (#4). Tighten securely.

2. Install chain lugs (#5) on either side of the tractor top link mount using pin (not supplied).

3. Cutting height is then set by placing proper chain link in key slot (#5).

4. Raise and lower implement to find maximum extended driveline length. Check to make certain driveline does not exceed 25

5. If needed, set tractor 3-point lift height to keep driveline from exceeding 25

Maximum PTO Driveline Movement During Operation

Figure 1-12

up or down.

up.

5/26/16

Check Chain Assembly

Figure 1-13

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 22

Table of Contents

DANGER

WARNING

NOTE: Do not tighten hardware until assemblies 

are complete. Refer to “Torque Values Chart” on page 45.

22292

22291

16258

Section 2: Assembly of Optional Equipment

Chain Safety Guards (Optional)

Rotary Cutters have the ability to discharge objects at high speeds; therefore, the use of front and rear safety guards is strongly recommended when cutting along highways or in areas where people may be present.

Not all objects will be stopped by safety guards. Therefor e, use extreme caution when cutting in areas where people may be present. It is best to operate the cutter when no one is nearby. Stop blade rotation if someone is within several hundred feet.

Front Chain Guards  RCR2596

Refer to Figure 2-1:

Install each front chain shield (#1) with 1/2-13 x 2 3/4" long carriage bolts (#2) and flange nuts (#3) as shown.

RCR2596 Front Chain Shield

Figure 2-1

Front Chain Guards  RCR2510

Refer to Figure 2-2:

Install front chain shields (#1) & (#2) with  1/2" -13 x 3 1/2" long carriage bolts (#3) and flange  nuts (#4) as shown.

Rear Chain Guards

Refer to Figure 2-3:

Install rear chain shield (#1) with 1/2" -13 x 1 1/2" long carriage bolts (#2) and 1/2" flange nuts (#3) as shown.

RCR2510 Front Chain Shield

Figure 2-2

RCR2596 & RCR2510 Rotary Cutters 327-147M

Rear Chain Shield

Figure 2-3

5/26/16

Page 23

Table of Contents

DANGER

WARNING

NOTE: Do not tighten hardware until assemblies 

are complete. Refer to “Torque Values Chart” on page 45.

22307

22308

16266

Section 2: Assembly of Optional Equipment

Rubber Safety Guards (Optional)

Not all objects will be stopped by safety guards. Therefor e, use extreme caution when cutting in areas where people may be present. It is best to operate the cutter when no one is nearby . Stop blade rotation if someone is within several hundred feet.

RCR2596 Front Rubber Shields

Figure 2-4

Front Rubber Guards  RCR2596

Refer to Figure 2-4:

Install front rubber shields (#1) with 1/2" -13 x 2 3/4" long carriage bolts (#2) and flange nuts (#3) as shown.

Front Rubber Guards  RCR2510

Refer to Figure 2-5:

Install front rubber shields (#1) & (#2) with  1/2" -13 x 3 1/2" long carriage bolts (#3) and flange  nuts (#4) as shown.

Rear Rubber Guards

Refer to Figure 2-6:

Install rear rubber shield (#1) and rear shield strap (#2) with 1/2" -13 x 1 1/2" long carriage bolts (#3) and  1/2" flange nuts (#4) as shown.

RCR2510 Front Rubber Shields

Figure 2-5

5/26/16

Rear Rubber Shield

Figure 2-6

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 24

Section 3: Adjustments

WARNING

26559

NOTE: The unit cuts most efficiently if the front of the cutter is slightly lower than the back.

Lengthening leveling rods with adjusting nuts (#2) lowers the front of the cutter.

22318

Table of Contents

Section 3: Adjustments

Pull-Type Leveling & Cutting Height

See page 23 for “3-Point Leveling & Cutting Height”.

There are two primary adjustments that should be made prior to actual field operations:

• Deck Leveling From Front to Back

• Pull-Type Cutting Height

Proper adjustment of each of these items will provide for higher efficiency, improved cutting performance, and longer blade life. The following tools will be needed:

• Pliable tape measure

• Spirit or carpenter’s level

• Open end or hex end wrench or socket set

• Protective gloves

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for all moving parts to stop before dismounting from tractor.

5. If cutter deck is not slightly lower at the front than at the back, then loosen jam nuts (#1) on both sides and rotate leveling rod adjusting nuts (#2) until deck is slightly lower by an equal amounts on both sides.

6. Be sure that the right and left leveling rods are equally tight and then re-tighten jam nuts (#1).

Pull-Type Cutting Height

Refer to Figure 3-2:

Lift mechanism for pull-type units can be equipped with either a ratchet jack (#1) or hydraulic cylinder (#2). Adjust lifting mechanism if cutting height is too high or too low.

Ratchet Jack Instructions

The deck can be raised or lowered by setting the ratchet mechanism on the ratchet jack (#1) and then pumping the jack handle to raise or lower the cutter to desired cutting height.

Hydraulic cylinder Instructions

Stroke control spacers (#3) are included with the hydraulic set-up. They consist of cast steel halves with spring clips to hold the two halves together.

1. Extend the hydraulic cylinder to free up space on the cylinder rod for installing and removing spacers. Add or remove spacers as needed.

2. Retract hydraulic cylinder and re-measure to verify if cutting height is suitable.

3. Store stroke control spacers on hydraulic hose (#4) near the hydraulic cylinder.

Deck Leveling

Figure 3-1

Deck Leveling From Front to Back

Refer to Figure 3-1:

1. Hook cutter to tractor. Refer to page 15 or 17.

2. Locate tractor with cutter on a flat, level surface.

3. Use tractor’s hydraulics to adjust deck height above ground level 2 to 3 inches.

4. Place a spirit level (#3) or other suitable leveling device on either of the main deck channels.

RCR2596 & RCR2510 Rotary Cutters 327-147M

Pull-Type Lift Cutting Height

Figure 3-2

5/26/16

Page 25

Section 3: Adjustments

WARNING

22315

CAUTION

IMPORTANT: The front blade tip should be lower

than rear blade tip by approximately 1". The cutter is subject to continuous material flow under the deck if the rear blade is at the same height or lower than the front blade causing horsepower loss, grass clumps, blade wear, and frequent blade sharpening.

22316

Front Blade Tip

Rear Blade Tip

Vertical Alignment

Table of Contents

3-Point Leveling & Cutting Height

See page 22 for “Pull-Type Leveling & Cutting Height”.

There are four primary adjustments that should be made prior to actual field operations:

Deck Leveling From Left to Right

•

• Deck Leveling From Front to Rear

• Center Link Adjustment

• Tailwheel Height Adjustment

Proper adjustment of each of these items will provide for higher efficiency, improved cutting performance, and longer blade life. The following tools will be needed:

• Pliable tape measure

• Spirit or carpenter’s level

• Open end or hex end wrench or socket set

• Protective gloves

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for all moving parts to stop before dismounting from tractor.

Deck Leveling From Front to Rear

Refer to Figure 3-4:

Avoid direct contact with cutter blades by wearing a pair of gloves. Cutter blades have sharp edges and burrs that can cause injuries.

1. Using tractor’s 3-point hydraulic control, raise or lower 3-point arms until front of deck is slightly lower than deck rear.

The top center link should be loose when deck rear is

2. supported by the tailwheel. If not, lengthen center link until loose. Final adjustment will be made later.

3. With gloves on, carefully rotate each blade tip to the position shown in Figure 3-4.

4. Measure distance from cutting tip of blade to ground surface. This distance is the cutting height.

5. If desired cutting height cannot be obtained by adjusting the lower 3-point arms, then readjust tailwheel height. See “Tailwheel Height Adjustment” on page 24.

6. Repeat steps 1 to 5 until desired cutting height is achieved.

7. Set tractor’s 3-point control stop at this height.

Deck Leveling

Figure 3-3

Deck Leveling From Left to Right

Refer to Figure 3-3:

Rotary Cutter must operate level from side to side at all times. Make certain gauge wheels are adjusted to identical heights before adjusting lower 3-point lift arms.

1. Having completed “Tractor Hook-up”, locate tractor and cutter on a flat, level surface.

2. Use tractor’s hydraulic 3-point control lever to lower

3. Place a spirit level (#1) or other suitable leveling

4. Adjust either one or both of the tractor’s lower 3-point

5/26/16

cutter until tailwheels make contact with the ground.

device on the front of the cutter deck.

lift arms to level the deck from left to right. Some tractors have only a single adjusting lift arm.

Cutting Height

Figure 3-4

Center Link Adjustment

Refer to Figure 3-4:

Lower

2. Adjust the top center 3-point link until the cutter hitch pin is vertically above the lower lift arm hitch pins.

3. Lock center link in this position once correct length is achieved.

deck to the nominal cutting height.

cutter

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 26

Table of Contents

NOTE: The unit cuts most efficiently if front of cutter

is slightly lower than the back by not more than 1".

16269

Section 3: Adjustments

Tailwheel Height Adjustment

Refer to Figure 3-5:

With Rotary Cutter lowered to nominal cutting height, measure distance from end of front blade cutting tip to ground and from end of rear blade cutting tip to ground. The tailwheel must be adjusted up or down if the rear blade tip is one of the following:

• Same distance off the ground as the front blade.

• Lower than the front blade.

• More than 1" higher off the ground than the front blade.

Adjust tailwheel if cutting height is too high or too low.

1. Use tractor’s 3-point hydraulic control to lift cutter so that the tailwheel clears the ground.

2. Remove existing hardware; 1/2" -13 x 1 1/2" long carriage bolt (#1) and 1/2" flange nut (#2).

3. Adjust tailwheel up or down to desired cutting height by repositioning adjusting plate (#3) and then replacing the hardware.

4. Tighten 1/2" flange nut (#2) to the correct torque. Refer to “Torque Values Chart” on page 45.

3-Point Cutter Height Adjustment

Figure 3-5

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 27

Table of Contents

DANGER

Section 4: Operating Procedures

Operating Checklist

Hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper training involved in the operation, transport, maintenance, and storage of the Rotary Cutter. Therefore, it is absolutely essential that no one operates the cutter without first having read, fully understood, and become totally familiar with the Operator’s Manual. Make sure the operator has paid particular attention to:

• Important Safety Information, pages 1 to 7

• Section 1: Assembly & Set-up, page 10

• Section 3: Adjustments, page 22

• Section 4: Operating Procedures, page 25

• Section 5: Maintenance & Lubrication, page 31

Make sure the operator has completed the Operating Checklist and Inspection below.

Operating Checklist

✔

Read and follow all safety information and alerts carefully. Refer to "Important Safety Information".

Make sure all guards and shields are in place.  Refer to "Important Safety Information".

Read and follow hook-up & preparation instructions. Refer to "Section 1: Assembly & Set-up".

Read and make all required adjustments.  Refer to "Section 3: Adjustments".

Read and follow all operating procedures.  Refer to "Section 4: Operating Procedures".

Read and follow all maintenance instructions. Refer to "Section 5: Maintenance & Lubrication".

Make sure there are no hydraulic leaks on the unit.  Refer to "Avoid High Pressure Fluids Hazard".

Read and follow all lubrication instructions. Refer to "Lubrication Points".

Make sure all gearboxes are properly lubricated. Refer to “Gearbox lubrication”.

Check cutter initially and periodically for loose bolts and pins. Refer to “Torque Values Chart”.

Check Page

Page 1

Page 10

Page 22

Page 25

Page 31

Page 3

Page 37

Page 38

Page 45

Safety Information

Hydraulic fluid under high pressure can penetrate skin. 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 hydraulic leaks. If hydraulic fluid is injected into the skin or eyes, it must be treated by a doctor familiar with this type of injury within a few hours or gangrene may result. DO NOT DELAY.

Be sure deck is lowered to the ground and all hydraulic pressure is relieved before disconnecting or reconnecting hydraulic line and/or fittings between Rotary Cutter and tractor hydraulic system.

Tractor PTO shield, gearbox shaft shield, and driveline shields must be secured in place when operating cutter to avoid injury or death from entanglement in driveline.

All guards and shields must be installed and in good working condition at all times during cutter operation.

Never place hands or feet under the deck or attempt to make adjustments to the cutter with PTO engaged. Cutter blades rotating at high speeds cannot be seen and are located close to the deck housing. Body extremities can be cut off instantly.

Keep others away while cutter is operating. It can discharge objects at high speeds. Therefor, the use of front and rear safety guards is required when cutting along highways and in areas where people may be present. Stop blade rotation if a bystander is within several hundred feet.

Do not engage tractor PTO while hooking-up and unhooking driveline or while someone is standing near the driveline. A person’s body and/o r clothing can become entangled in the driveline resulting in serious injury or death.

Do not operate a broken or bent driveline. Such drivelines can break apart while rotating at high speeds causing serious injury or death. Always remove Rotary Cutter from service until damaged drivelines are repaired or replaced.

Always disconnect driveline from tractor PTO shaft before servicing underside of cutter. If tractor is started with PTO engaged, the cutter can cause bodily injury or death.

5/26/16

Always disengage PTO before lifting cutter up and never operate cutter in the raised position. The cutter can discharge objects at high speeds resulting in serious injury or death.

Do not operate and/or travel across steep inclines where a tractor can rollover resulting in serious injury or death. Consult your tractor’s manual for acceptable inclines the tractor is capable of traveling across.

Do not use cutter as a fan. Cutting blades are not properly designed or guarded for this use. Using cutter as a fan can result in injury or death.

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 28

Section 4: Operating Procedures

WARNING

CAUTION

Table of Contents

Always disengage PTO before lifting cutter up and never operate cutter in the raised position. The cutter can discharge objects at high speeds resulting in serious injury or death.

Never allow riders including children on the tractor or cutter. They can fall and be ran over causing serious injury or death.

Do not operate cutter with loose hardware. Loose hardware can result in a breakdown causing bodily injury or death.

Do not use cutter to lift or carry objects, to pull fence posts, stumps or other objects, or to tow other equipment. Doing so can damage the cutter, cause serious bodily injury or death.

Do not use deck as a working platform. The deck is not properly designed or guarded for this use. Using deck as a working platform could cause serious injury or death.

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for blades to come to a complete stop before dismounting tractor.

Keep blade bolt access hole covered at all times except when servicing cutter blades. Make sure driveline is disconnected from the tractor before servicing cutter blades.

Always disengage PTO before lifting cutter too high and never engage PTO with cutter raised too high. Doing so can cause rotating u-joints to break into pieces that can be thrown at high speeds causing serious injury or death.

Buildup of debris around moving parts and gearboxes is a fire hazard. Keep rotating parts and gearboxes fr ee fr om debris to avoid serious injury and property damage.

Improper oil level can cause bearing failure and be a fire hazard. Maintain proper gearbox oil level to avoid serious injury and property damage.

Do not exceed rated cutting capacity of your cutter. See specifications & capacities for specified cutting capacity. Exceeding ratted cutting capacities can damage drive components, cutter blades, and deck components.

Do not over speed PTO or machine damage may result. Many tractors provide both 540 and 1,000 rpm PTO speeds. Check your tractor’s manual to determine its capabilities.

• RCR series cutters are designed for 540 rpm rear PTO.

Inspection of Tractor & Cutter

Make the following inspections with cutter attached to a tractor, PTO disengaged, and all moving components completely stopped:

1. Park tractor and cutter on a level surface.

2. Disengage PTO, place gear selector in park, set park brake, shut tractor off, and remove switch key. Make sure cutter blades have come to a complete stop before dismounting from tractor.

3. Inspect tractor safety equipment to make sure it is installed and in good working condition.

4. Inspect cutter safety equipment to make sure it is installed and in good working condition.

5. Check driveline to make certain it is securely connected to the tractor PTO shaft and cutter gearbox shaft. Also, make certain that the guards are in good working condition and in place.

6. Carefully raise and lower implement to ensure that the drawbar, tires, and other equipment on the tractor do not contact cutter frame or driveline.

7. Check all hoses and wires to be sure that they will not come in contact with rotating driveline.

8. With cutter resting on solid supports, PTO disengaged, and blade rotation completely stopped:

• Check for and remove foreign objects wrapped

around blade spindles.

• Check for nicked, bent, broken, and worn cutting

blades. Replace or sharpen blades as required. Refer to “Cutter Blade Maintenance” on page 32.

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 29

Section 4: Operating Procedures

WARNING

IMPORTANT: Do not exceed rated cutter PTO

speed. Excessive engine speed will cause damage to power train components.

IMPORTANT: Always disengage tractor PTO before raising cutter to transport position.

Table of Contents

9. Inspect Hydraulic hoses for wear, damage, and hydraulic leaks. See “Avoid High Pressure Fluids Hazard” on page 3. Replace damaged and worn hoses with genuine Great Plains parts.

10. Remove solid supports from under the deck.

11. Verify cutter height is set correctly. See “Pull-Type

Leveling & Cutting Height” on page 22 or “3-Point Leveling & Cutting Height” on page 23

The remaining inspections are made by engaging the PTO to check for normal operation.

Stop PTO immediately if vibration continues after a few revolutions during start-up and anytime thereafter. Wait for PTO to come to a complete stop before dismounting from tractor to check for probable causes. Make necessary repairs and adjustments before continuing.

12. Start tractor, set throttle to idle or slightly above idle, and slowly engage PTO. Initial start-up vibration is normal and should stop after a few revolutions. Stop PTO rotation immediately if vibration continues.

13. Once cutter is running smoothly, slowly increase tractor PTO speed to 540 RPM. Stop PTO rotation immediately if vibration occurs.

14. Investigate cause of vibration and make repairs before putting cutter back into service.

Blade Engagement & Disengagement

Cutter blades can lock-up against each other during start-up and shut-down especially if the tractor’s PTO engagement is “INSTANT ON” and “INSTANT OFF”. Following Blade Engagement and Blade Disengagement instructions below will help eliminate blade lock up.

Blade Engagement

1. Increase throttle to a speed just enough to get the cutter started without stalling tractor while slowly engaging PTO drivelines. Use tractor’s PTO soft start option if available.

2. Ensure that all power shafts are rotating and that the cutter is not vibrating excessively after ramping up to PTO speed for at least 3 seconds. If excessive vibration continues after 3 seconds at full PTO speed, disengage PTO immediately, shut down tractor, and remove switch key.

3. Check blades for a lock-up situation. Block cutter deck up before working under the unit. Unlock blades, remove support blocks, and repeat “Blade

Engagement” instructions.

Blade Disengagement

1. Slowly decrease throttle speed until engine idle speed is reached and then disengage PTO.

2. Engage tractor park brake, shut tractor engine off and remove switch key. Stay on tractor until blades have come to a complete stop.

Transporting

When traveling on public roads, use accessory lights, SMV sign, clean reflectors, and other adequate devices to warn operators in other vehicles of your presence. Always comply with all federal, state, and local laws.

1. Make sure driveline does not contact tractor or cutter when raising cutter to transport position.

2. Reduce tractor ground speed when turning and leave enough clearance so cutter does not contact obstacles such as buildings, trees, or fences.

3. Limit transport speed to 20 mph. Transport only with a tractor of sufficient size and horsepower.

4. When traveling on roadways, transport in such a way that faster moving vehicles may pass you safely.

5. Shift tractor to a lower gear when traveling over rough or hilly terrain.

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 30

Section 4: Operating Procedures

WARNING

IMPORTANT: Do not back pull-type cutter into solid

objects. The joint where the tongue is pinned to the deck will pivot upward causing the front edge of the deck to press against the driveline.

Your cutter is equipped with free swinging cutting blades to reduce shock loads when striking obstacles. However, it is best to avoid striking obstacles to extend cutter and blade life.

Maintain correct PTO speed. Loss of PTO speed will allow blades to swing back resulting in ragged, uneven cutting. Excessive engine speed will cause damage to the power train components.

NOTE: Do not cut in wet conditions. Wet material will build up on the deck underside creating poor discharge, high wear, and additional horsepower.

Periodically disengage PTO, turn off tractor, remove key & check for objects wrapped around blade spindle. Block deck up before removing objects.

Frequently inspect cutter for loose bolts and nuts. Tighten all loose hardware as indicated in the “Torque Values Chart” on page 45.

11934

20795

Table of Contents

Field Operation

Clear area to be cut of debris and other unfor eseen removable objects before cutting. Mark any potential hazards that cannot be removed such as tree stumps, post, rocks, holes, and dropoffs with a visible flag.

Turning Angles for Pull-Type Cutters

Refer to Figure 4-1 & Figure 4-2:

Avoid tractor-to-cutter turning angles exceeding 35 degrees if main driveline is a standard conventional drive shaft. The turning angle may be increased to 80 degrees if equipped with a constant velocity driveline shaft. These extreme angles are intended for intermittent usage only and not prolonged usage. Plan your field cutting to minimize the number of turns as well as extreme angles where turns are necessary.

Conventional U-Joint Driveline

Figure 4-1

1. Thoroughly inspect area to be cut for debris and unforeseen objects. Mark any potential hazards.

2. Follow “Blade Engagement” instructions on this page to start cutter blades turning.

3. Optimum ground speed depends on density of material being cut, horsepower rating of tractor, and terrain. Always operate tractor at cutter’s full rated PTO speed in a gear range that allows the cutter to make a smooth cut without lugging tractor down, usually between 2 to 5 mph.

4. Stop traveling and disengage PTO after the first 50 feet of cutting. Check cutter levelness and cutting height to make certain it is adjusted properly.

5. Do not engage PTO with 3-point cutter fully raised.

6. Periodically disengage PTO, shut down tractor, remove key, and check for foreign objects wrapped around the blade spindle. Block cutter deck up before removing objects.

7. Frequently inspect cutter for loose bolts and nuts. Tighten all loose bolts and nuts as indicated in the “Torque Values Chart” on page 45.

8. For additional information, see “General Operating Instructions” on page 30.

RCR2596 & RCR2510 Rotary Cutters 327-147M

CV Driveline

Figure 4-2

5/26/16

Page 31

Section 4: Operating Procedures

WARNING

IMPORTANT: Always cross steep ditches and banks

at a diagonal. Never cross straight across and never back into a steep ditch or bank.

Ditch / Bank

Wrong

Right

Ditch / Bank

WARNING

IMPORTANT: Always place parking jack on a firm

surface or place a board under the parking jack for additional support.

Table of Contents

Crossing Steep Ditches & Banks

Refer to Figure 4-3:

Damage to the tractor’s PTO components and/or driveline components can cause driveline to come loose and cause bodily injury to the operator and others.

Crossing Steep Ditches and Banks

Figure 4-3

Cutting over ditches and backing up hills can tilt the cutter’s back side up excessively resulting in “Bottoming Out” the driveline. Bottoming out is when the driveline shaft has shorten to the point it is pressing against the gearbox and tractor PTO shafts. Once a driveline has bottomed out, it can not be shorten anymore without causing serious damage to the tractor PTO components, cutter gearbox and driveline.

Do not operate a pull-type cutter at an angle exceeding 25 degrees up or down or at any angle that will force the driveline to bind and/or hit the tractor drawbar.

Unhook 3-Point Cutter

7. Collapse driveline by pushing tractor end of driveline towards the cutter.

8. Rotate driveline storage hook down and place driveline in storage hook.

Unhook Pull-Type Cutter

Refer to Figure 1-8 on page 15:

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for blades to come to a complete stop before dismounting tractor.

1. See “Long Term Storage” on page 36 if cutter is to be stored for a long time.

2. Park cutter on a level solid hard surface. Place tractor gear selector in park and set park brake.

3. Fully raise deck up to transport position. Add stroke control spacers to cylinder rod to prevent cylinder from retracting. See “Hydraulic cylinder Instructions” on page 22.

4. Remove parking jack (#1) from cutter deck and secure to cutter tongue by fully inserting jack locking pin (#2) through parking jack and mounting bracket.

5. Disconnect hydraulic hose (#9) from tractor. Store hose ends on cutter deck.

6. Disconnect hitch safety chain.

7. Disconnect driveline (#8) from tractor PTO shaft.

8. Use parking jack (#1) to raise and lower cutter tongue to the height needed to disconnect clevis hitch from tractor drawbar.

9. Remove 1"-8 x 4 1/2" hex bolt (#3), flat washers (#5), and locknut (#4) from the clevis hitch (#6).

Always disengage PTO, put tractor in park or set park brake, shut tractor engine off, remove ignition key, and wait for blades to come to a complete stop before dismounting tractor.

1. See “Long Term Storage” on page 36 if cutter is to be stored for a long time.

2. Park on a level solid surface and lower deck to ground level or onto support blocks.

3. Engage tractor park brake, shut tractor engine off, and remove switch key. Stay on tractor until blades have come to a complete stop.

4. Disconnect driveline from tractor.

5. Unhook 3-point hitch from tractor and drive tractor forward several feet.

6. Reinstall hitch pins, linchpins, and hair pin cotters in cutter hitch for safe keeping.

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 32

Section 4: Operating Procedures

Table of Contents

General Operating Instructions

Now that you have familiarized yourself with the Operator’s Manual, completed the Operators Checklist, properly attached your cutter to your tractor, made the leveling adjustments, and preset your cutting height, you’re almost ready to begin using your Rotary Cutter.

It’s now time to do a running operational safety check. Shut the tractor off immediately and remove the key if at any time during this safety check you detect a malfunction in either the cutter or tractor. Make necessary repairs or adjustments before continuing on.

If you have a three-point hitch model make sure the tractor park brake is engaged, PTO is disengaged, and cutter is resting on the ground. Start tractor and then back tractor throttle off until engine is at low idle. With tractor’s rear hydraulic lift control lever, raise cutter to transport position making sure that the PTO shaft is not in a bind and does not come in contact with the cutter frame. Lower cutter to the ground and, with tractor still at low idle, engage PTO. If at this point everything is running smoothly, increase engine RPM until the tractor’s engine reaches full PTO operating speed. The RCR2596 and RCR2510 will be 540 RPM. Slowly raise cutter to transport height to make sure the driveline does not bind or chatter. Then return engine to low idle, disengage PTO, and position adjustable stops on tractor hydraulic lift lever so that the cutter can be consistently returned to the same cutting and transport height.

If you have a pull-type cutter, make sure the park brake is on and the cutter is on the ground in mowing position. Start the tractor and reduce engine speed to low idle. Engage the PTO and increase engine rpm until you reach full PTO speed. If everything is running smoothly your running safety check is complete and you may shut the tractor and cutter off.

You should now be ready to move to the cutting site to begin mowing. You should have inspected and should only be cutting in an area you are familiar with which is free of debris and unseen objects. Never assume an area is clear and extremely tall grass should be cut twice to detect potential hazards. In the event you do strike an object stop the tractor and cutter immediately to inspect the cutter and make any necessary repairs before resuming operation. It pays to inspect a new area and to develop a plan before you cut.

Normal mowing speed will be between 2-5 mph and you will need to maintain 540 rpm PTO speed to produce a clean cut, so make a tractor gear and range selection that will maintain this combination. Generally the quality of cut will be better at lower ground speeds and cutting denser ground cover will create the need to slow down. In certain conditions tractor tires will roll grasses down resulting in an uneven cutting height when the grass fails to rebound before being cut. When this happens you may need to reverse the cutting direction and double cut to achieve the desired finish. You will want to avoid very low cutting heights especially on extremely uneven terrain.

Always cut downward on slopes and avoid crossing the face of steep slopes. Avoid sharp drops and cross diagonally through dips to prevent hanging up the tractor and cutter. Slow down in turns and avoid sharp turns if at all possible. Remember to look back often.

Now that you’re prepared and well briefed you may begin cutting. Begin cutting by doing the following:

• Reducing the tractor’s engine rpm

• Make sure the cutter is on the ground in cutting position

• Engage the PTO

• Raise the engine rpm to the appropriate PTO speed

• Begin cutting.

When it is difficult to make a wide turn and you need to reverse direction, the three point hitch models can be lifted into transport position to make a tight turn. Operators of pull-type models must plan ahead and choose a cutting pattern that allows him to make wider turns. Try increasing or decreasing ground speed to determine the effect on quality of cut. With a little practice you will be pleased with what you and your Great Plains cutter can do.

When you are done mowing, need to take a break, or just need to make a few adjustments to the cutter, remember to always do the following:

• Reduce the tractor’s engine rpm

• Disengage the PTO

• Stop on level ground

• Set the park brake

• Turn off the engine and remove the key

• Stay on the tractor until the cutter blades have come to

a complete dead stop.

See “Specifications & Capacities” and “Features & Benefits” for additional information and performance enhancing options.

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 33

Table of Contents

DANGER

WARNING

CAUTION

33925

WARNING

Section 5: Maintenance & Lubrication

Maintenance

Proper servicing and adjustments are key to the long life of any implement. With careful inspection and routine maintenance, you can avoid costly downtime and repair.

Check all bolts after using the unit for several hours to be sure they are tight. Replace any worn, damaged, or illegible safety labels by obtaining new labels from your Great Plains dealer.

To avoid serious injury or death:

• Always disconnect driveline from tractor PTO shaft befor e

servicing underside of cutter . If tractor is started with PTO engaged, the cutter can cause bodily injury or death.

• Always secure cutter deck in the up position with solid

supports before servicing underside of cutter. Never work under equipment supported by hydraulics. Hydraulics can drop equipment if controls ar e actuated or if hydraulic lines burst. Either situation can drop the cutter instantly even when power to the hydraulics is shut off.

Tire Maintenance

Tire changing can be dangerous and should be performed by trained personnel using correct tools and equipment. When removing and installing wheels, use wheel handling equipment adequate for the weight involved.

Always release all air pressure in air-filled airplane tires before removing hardware bolting their split rims together. Not doing so can cause the split rims to blow apart instantly and could result in serious injury or death.

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. Do not overinflate tires.

To avoid serious injury or death:

• Keep blade bolt access hole covered at all times except

when servicing cutter blades. Make sure driveline is disconnected from the tractor before servicing cutter blades.

• Do not operate cutter with blades that are out-of-balance,

bent, excessively worn, excessively nicked, or with blade bolts that are excessively worn. Such blades can break loose from the cutter at high speeds causing serious injury or death.

• Do not attempt to straighten a bent blade or weld on a

blade. Do not attempt to modify a blade such as hard surfacing, heat treating, cold treating, or by any other method. Always replace blades with new Great Plains blades to assure safety.

To avoid serious injury:

• Buildup of debris around moving parts and gearboxes is a

fire hazar d. Keep rotating parts and gearboxes free from debris to avoid serious injury and property damage.

• Improper oil level can cause bearing failure and be a fire

hazard. Maintain pr oper gearbox oil level to avoid serious injury and property damage.

• Do not alter Great Plains equipment or replace parts with

other brands. Doing so can cause equipment to perform improperly and may lead to breakage causing bodily injury or death. Replace parts only with genuineGreat Plains parts.

5/26/16

Do not weld on or heat a rim. If a tire is mounted to the rim, air pressure inside the tire can increase enough to cause an explosion. High heat can also weaken and/or warp the rim, damage the tire, and destroy foam filling inside a tire.

1. Check tires for low air pressure, missing nuts, missing lug bolts, wear, separated rubber, and bent, broken, or cracked wheel rims.

2. Inflate air filled tires to the proper pressure. Refer to “Tire Inflation Chart” on page 45.

Refer to Figure 5-1:

3. Replace wheel rims and tires as needed with genuine Great Plains parts. Do not loosen split rim hardware (#1) until all air pressure in the tire has been removed.

Air Filled Airplane Tires with split Rims

Figure 5-1

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 34

IMPORTANT: Cutting blades must be replaced in

mating pairs. Not replacing both blades will result in an out-of-balance condition that will contribute to premature bearing breakdown on the spindle hub and create structural cracks in the cutter housing.

Section 5: Maintenance & Lubrication

35941

Great Plains Cutter Blade Parts

ItemPart No. Part Description

318-586A BLADE BOLT KIT (items 1, 2, & 3 below)

1 802-277C BLADE BOLT 1 1/8-12 x 3 7/16 WITH KEY 2 804-147C WASHER FLAT 1 HARD ASTMF436 3 803-170C NUT HEX TOP LOCK 1 1/8-12 PLATE 4 312-881H 27 x 10G OVAL DISHPAN WELDMENT 5 840-273C PLUG LP 3" ID RUBBER 6 820-168C SEE LIST OF CUTTER BLADES BELOW

Great Plains List of Cutter Blades

Part No. Part Description

820-195C RCR2596 CUTTER BLADE 1/2 x 4 x 20 CCW 820-196C RCR2596 CUTTER BLADE 1/2 x 4 x 20 CW 820-137C RCR2510 CUTTER BLADE 1/2 x 4 x 25 CCW 820-112C RCR2510 CUTTER BLADE 1/2 x 4 x 25 CW

Optional Low Lift Cutter Blades

820-210C RCR2596 BLADE 1/2X4X20.5 LL CCW 820-211C RCR2596 BLADE 1/2X4X20.5 LL CW 820-193C RCR2510 BLADE 1/2X4X25 LL CCW 820-209C RCR2510 BLADE 1/2X4X25 LL CW

Use 1-11/16"

Socket Wrench

On Blade Nut (#3)

CCW

Cutter Blade Maintenance

Always inspect cutting blades before each use. Make sure they are properly installed and in working condition. Replace any blade that is damaged, worn, bent, or excessively nicked. Never straighten a bent blade! Small nicks can be ground out when sharpening. Remove cutting blades and sharpen or replace as follows:

1. Place tractor gear selector in park and/or set brakes, shut engine off and remove ignition key.

2. Disconnect main driveline from tractor PTO and secure cutter deck in the up position with solid supports before servicing underside of cutter.

3. Inspect cutting blades. Make certain they are properly installed and are in good working condition. Replace any blade that is damaged, worn, bent, or excessively nicked. Small nicks can be ground out.

Refer to Figure 5-2:

4. To remove blades from the cutter, remove access cover (#5).

5. Rotate blade bolt (#1) until aligned with access  hole (A).

6. Unscrew locknut (#3) to remove cutting blade (#6). Blade bolt (#1) is keyed and will not turn freely.

7. Repeat steps 4 to 6 for the other blade.

8. Both blades should be sharpened at the same angle as the original cutting edge and must be replaced or re-ground at the same time to maintain proper balance. The following precautions should be taken when sharpening blades:

a. Do not remove more material than necessary.

b. Do not heat and pound out a cutting edge.

c. Do not grind blades to a razor edge. Leave a blunt

cutting edge approximately 1/16" thick.

d. Always grind cutting edge so end of blade remains

square to cutting edge and not rounded.

e. Do not sharpen back side of blade.

f. Both blades should weigh the same with not more

than 1 1/2 oz. difference. Unbalanced blades will cause excessive vibration which can damage gearbox bearings and create structural cracks.

Table of Contents

Cutter Blade Assembly

Figure 5-2

RCR2596 & RCR2510 Rotary Cutters 327-147M

Blade Positioning and Rotational Directional

Figure 5-3

5/26/16

Page 35

IMPORTANT: Examine blade bolts (#1) and flat

washers (#2) for excessive wear and replace if worn.

IMPORTANT: Locknuts can loose their ability to lock properly once removed. Always use a new locknut when installing blades.

Table of Contents

WARNING

13693

IMPORTANT: If clutch run-in procedure indicated that one or more friction disks did not slip, the clutch must be disassembled to separate the friction discs.

Section 5: Maintenance & Lubrication

Refer to Figure 5-3 on page 32:

9. Make certain when installing cutter blades that the

blades on one spindle is positioned 90 degrees to the blades on the other spindle as shown in Figure 5-3.

10. Carefully check cutting edges of blades in relation to

blade rotation to ensure correct blade placement. Blade rotation is counterclockwise on the left side and clockwise on the right side as shown. Airfoil (lift) must be oriented towards the top of the deck.

Refer to Figure 5-2:

11. Insert blade bolt (#1) through blade (#6), dish 

pan (#4), and flat washer (#2). Secure blade with a new locknut (#3) and torque to 450 ft-lb.

12. Repeat step 11 for the other blade.

13. Replace access cover (#5).

14. If replacing dishpan (#4), nut (#7) on gearbox output

shaft should be torqued to 450 ft-lbs. minimum and cotter pin (#8) installed with both legs bent opposite directions around nut (#7).

Slip-Clutch Protected Drivelines

Cutter drive components are protected from shock loads by a friction slip-clutch. The clutch must be capable of slippage during operation to protect the gearbox, driveline, and other drive train parts.

Refer to Figure 5-4:

1. Using a pencil or other marker, scribe a line across the exposed edges of the clutch plates and friction discs.

Clutch

Figure 5-4

2. Carefully loosen each of the 8 spring retainer nuts on the clutch housing a total of EXACTLY 2 revolutions. It will be necessary to hold the hex end of the retainer bolt in order to count the exact number of revolutions.

3. Start tractor and engage driveline for 2-3 seconds to permit slippage of the clutch surfaces. Disengage the PTO, then re-engage a second time for 2-3 seconds. Disengage the PTO, shut off tractor, and remove key. Wait for all components to stop before dismounting from tractor.

4. Inspect clutch and ensure that scribed markings made on the clutch plates have changed position. Slippage has not occurred if any two marks on the friction disc and plate are still aligned.

Clutch Run-In

Friction clutches should be “run-in” prior to initial operation and after long periods of inactivity to remove any oxidation that may have accumulated on friction surfaces. To prevent driveline and gear box damage, repeat “run-in” instructions at beginning of each season and when moisture and/or condensation seizes inner friction plates.

Always disengage PTO, engage parking brake, shut off tractor, remove ignition key, and wait for all moving parts to come to a complete stop before dismounting tractor to make adjustments.

5/26/16

5. Tighten each spring retainer nut on the clutch housing exactly 2 revolutions to restore clutch to original setting pressure. See “Clutch Assembly” on page 34 for exact spring length.

6. The clutch should be checked during the first hour of cutting and periodically each week. An additional set of scribe marks can be added to check for slippage.

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 36

Table of Contents

24600

WARNING

14714

22410

Great Plains Skid Shoe Replacement Parts

Part No. Part Description

312-602D SKID SHOE 802-603C PLOW 3/8-16 x 1 GR5 803-198C NUT HEX WHIZ 3/8-16 PLT

Section 5: Maintenance & Lubrication

Clutch Disassembly

Refer to Figure 5-5:

Disassembly of the clutch is simply a matter of removing the spring retainer nuts (#1), springs (#2), and bolts (#3) from the assembly. Each friction disc (#4) must then be separated from the metal surface adjacent to it.

Clutch Inspection

Inspect all parts for excessive wear and condition. Clean all parts that do not require replacement.The original friction disc thickness is 1/8" (3.2 mm) and should be replaced if thickness falls below 3/64" (1.1 mm). If clutches have been slipped to the point of “smoking”, the friction discs may be damaged and should be replaced. Heat build-up may also affect yoke joints.

Driveline

No.

826-255C 826-256C

Driveline

No.

826-215C 826-220C 826-225C

Driveline Location

Main

Jack Shaft

Driveline Location

Main Jack Shaft Stub Shaft

Clutch Adjustment

RCR2596

PTO

Speed

Cat No.

540 4

RCR2510

PTO

Speed

Figure 5-6

Cat No.

540 4

A (inches)

Spring Height

1.18" (S/N 566919+)

1.12" (S/N 566918-)

A (inches)

Spring Height

1.18" (S/N 566919+)

1.12" (S/N 566918-)

4-Plate Slip Clutch Assembly (540 RPM Shown)

Figure 5-5

Clutch Assembly

Refer to Figure 5-5:

Install new friction discs if needed and reassemble all components in proper order. Reassemble each friction disc (#4) next to the metal plate it was separated from. Install bolts (#3) through the end plates and intermediate plates as shown. Place springs (#2) over the bolts and secure with nuts (#1).

Refer to Figure 5-6:

Progressively tighten each spring retainer bolt until correct spring height “A” is reached. See “A” dimension in tables above Figure 5-6.

Skid Shoe Maintenance

Refer to Figure 5-7:

Excessive wear on skid shoes can damage side panels, cause inadequate operation of cutter, and create a safety hazard. Always replace skid shoes at the first sign of wearing thin.

There are two skid shoes mounted on the cutter sides. Check both skid shoes for wear and replace if necessary. Order only genuine Great Plains parts from your local Great Plains dealer.

RCR2596 & RCR2510 Rotary Cutters 327-147M

Skid Shoe Replacement

Figure 5-7

1. Remove 3/8" hex whiz nuts (#3), 3/8" plow bolts (#2), and skid shoe (#1) as shown.

2. Plow bolts should be checked for wear and replaced if necessary.

3. Attach new skid shoe (#1) to cutter with existing  3/8" plow bolts (#2) and secure with 3/8" hex whiz nuts (#3). Tighten nuts to the correct torque.

4. Repeat on opposite side.

5/26/16

Page 37

35085

Table of Contents

IMPORTANT: Make sure beads on beaded washers

(#1) are always facing rubber discs in assembly.

IMPORTANT: Make sure beads on beaded washers (#1) are always facing rubber discs in assembly.

35085

Opposite End

Section 5: Maintenance & Lubrication

RCR2596 Dual End Flex Couplers

Refer to Figure 5-8:

Replace two rubber discs (#1), (Great Plains Part No.  19-075), as follows: If additional repair parts are required, refer to Great Plains’ Parts Manual 326-566P.

1. Attach rubber discs (#4) to the double flex yoke (#3) with 6 bolts (#6A), 12 beaded washers (#1),  6 bushing (#2), and 6 nylock nuts (#7) as shown. Make sure beads on the beaded washers are facing the rubber discs. Do not tighten nuts.

2. Attach yoke ends (#5) to rubber discs (#4) with  6 bolts (#6B), 12 beaded washers (#1),  6 bushing (#2), and 6 nylock nuts (#7) as shown. Make sure beads on the beaded washers are facing the rubber discs. Do not tighten nuts.

3. Tighten nuts (#7) evenly with nuts torqued 35 to  40 ft-lb. Beaded washers (#2) should be embedded halfway into the rubber disc.

Flex Couplers

Figure 5-8

RCR2510 Dual End Flex Couplers

Refer to Figure 5-9:

Replace four rubber discs (#4), (Great Plains Part No.  19-075), as follows. If additional repair parts are required, refer to Great Plains’ Parts Manual 327-088P.

1. Attach rubber discs (#4A) to the double flex yoke (#3) with 3 bolts (#6A), 12 beaded washers (#1),  6 bushings (#2), and 3 nylock nuts (#7) as shown. Make sure beads on the beaded washers are facing the rubber discs. Do not tighten nuts.

2. Attach yoke end (#5) to rubber discs (#4) with  3 bolts (#6B), 12 beaded washers (#1),  6 bushing (#2), and 3 nylock nuts (#7) as shown. Make sure beads on the beaded washers are facing the rubber discs. Do not tighten nuts.

3. Tighten nuts (#7) evenly with nuts torqued 35 to  40 ft-lb. Beaded washers (#2) should be embedded halfway into the rubber disc.

4. Repeat steps 1 thru 3 to install rubber discs (#4B) on opposite end of flex coupler.

Dual End Flex Couplers

Figure 5-9

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 38

Great Plains Aerosol Touch-up Paint

Part No. Part Description

821-032C PAINT BLACK AEROSOL SPRAY CAN 821-058C PAINT GREEN AEROSOL SPRAY CAN

Table of Contents

DANGER

Section 5: Maintenance & Lubrication

Tractor Maintenance

One of the most important things you can do to prevent hydraulic system problems is ensure that your tractor's reservoir remains free of dirt and contamination.

Use a clean cloth to wipe hose ends before attaching them to your tractor. Replace your tractor’s hydraulic filter element at the prescribed intervals. These simple maintenances will go a long way to prevent occurrence of control valve and hydraulic cylinder problems.

Long Term Storage

Clean, inspect, service, and make necessary repairs to the cutter when parking it for long periods and when parking it at the end of a working season. This will help ensure the cutter is ready for field use the next time you hook-up to it.

Always disconnect driveline from tractor PTO shaft before servicing drive train components and cutter blades. The PTO can be engaged if tractor is started causing bodily injury or death.

5. Replace all damaged or missing decals.

6. Lubricate as noted in “Lubrication Points” starting on page 37.

7. Store cutter on a level surface in a clean, dry place. Inside storage will reduce maintenance and make for a longer cutter life.

8. Follow all unhooking instructions on page 29 when disconnecting tractor from cutter.

Ordering Replacement Parts

Great Plains offers equipment in factory standard green with black highlights. Special attention must be given to the green part number. The suffix number 81 must be included at the end of Great Plains’ Rotary Cutter part numbers. For example, if ordering a replacement part that is green, the part number should read 555-555C81. Black parts do not get a suffix number.

Always secure cutter deck in the up position with solid supports before servicing underside of cutter. Never work under equipment supported by hydraulics. Hydraulics can drop equipment if controls are actuated or if hydraulic lines burst. Either situation can drop the cutter instantly even when power to the hydraulics is shut off.

1. Clean off any dirt and grease that may have accumulated on the cutter and moving parts. Scrape off compacted dirt from the bottom of deck and then wash surface thoroughly with a garden hose. A coating of oil may also be applied to the lower deck area to minimize oxidation.

2. Check blades and blade bolts for wear and replace if necessary. See page 32.

3. Inspect for loose, damaged or worn parts and adjust or replace as needed.

4. Repaint parts where paint is worn or scratched to prevent rust. Ask your Great Plains dealer for aerosol touch-up paint. Paint is also available in touch-up bottles with brush, quarts, and gallon sizes by adding TU, QT, or GL to the end of the aerosol part number.

“Cutter Blade Maintenance”

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 39

Section 5: Maintenance & Lubrication

RCR2510

RCR2596

37021

37020

33965

Pull-Type

3-point

37022

16279

2462

Lubrication Points

Table of Contents

Lubrication Legend

Multi-purpose  spray lube

Multi-purpose  grease lube

Multi-purpose  oil lube

Intervals in hours at which

lubrication is required

Hrs

Hours

3-Point Tailwheel Spindle Tube

Lift-Type Cutter

Type of Lubrication: Grease

Quantity = 6 pumps

Hours

Tailwheel Hub

The tailwheel hub is equipped with a relief hole located directly opposite the grease fitting. The relief hole releases pressure from inside the hub casting when it is greased. The hub should be greased until grease purges from the relief hole.

Type of Lubrication: Multi-purpose Grease

Quantity = Until grease purges from the relief hole

5/26/16

Hours

Pillow Block Bearing (Pull-Type Cutter)

(RCR2510)

Type of Lubrication: Grease

Quantity = As required

Required

Ratchet Jack

Type of Lubrication: Multi-Purpose

Quantity = As required

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 40

Table of Contents

NOTE: Do not overfill! Cutter should be level when

checking oil.

NOTE: Do not overfill! Cutter should be level when checking oil. Oil expands when hot, therefore, always check oil level when cold.

Do Not Overfill

33418

Vented Plug

IMPORTANT: Your cutter is shipped with a vented

dipstick packaged in the Operator’s Manual bag and should have been installed in the gearbox by your Great Plains dealer. Please see your Great Plains dealer if vented dipstick was not included.

NOTE: Use a suction or siphon pump to drain gearbox of oil when there is not an oil drain plug.

33419

Do Not Overfill

IMPORTANT: Your cutter is shipped with a vented

dipstick packaged in the Operator’s Manual bag and should have been installed in the gearbox by your Great Plains dealer. Please see your Great Plains dealer if vented dipstick was not included.

NOTE: Use a suction or siphon pump to drain gearbox of oil when there is not an oil drain plug.

35008

Section 5: Maintenance & Lubrication

Hours

Gearbox

Remove side oil plug. If oil is below bottom of plug hole, add recommended gear lube through top vented plug hole until oil flows out of side plug hole. Reinstall and tighten side oil plug and top vented plug.

Type of Lubrication: 80-90W EP Gear Lube

Quantity = Fill until oil reaches top mark on dipstick or begins to flow out side plug hole in gearbox.

Hours

T-Gearbox

Check oil level in gearbox by removing lower rear plug in gearbox case. If oil is below lower rear plug hole, add recommended gear lube through top plug hole until oil flows out of rear plug hole. Reinstall oil plugs and tighten.

Type of Lubrication: 80-90W EP Oil

Quantity = Fill until oil flow from upper rear port of gearbox case.

Hours

RCR2596 & RCR2510 Rotary Cutters 327-147M

Dual End Flex Coupler

Type of Lubrication: Grease

Quantity = As required

5/26/16

Page 41

Table of Contents

Section 5: Maintenance & Lubrication

Hours

Driveline U-Joints

Type of Lubrication: Grease

Quantity = 6 pumps

13755

Hours

CV Driveline U-Joints & Profile Shields

14618

13755

27845

27847

Type of Lubrication: Grease

Quantity = 6 pumps

Hours

Driveline Profiles With Grease Zerk

Type of Lubrication: Grease

Quantity = 6 pumps

5/26/16

14618

Hours

Driveline Profiles Without Grease Zerk

Quantity = Clean & coat the inner tube of the driveline with a light film of grease and then reassemble.

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 42

Table of Contents

Section 6: Specifications & Capacities

RCR25 Series

Specifications & Capacities

Model Numbers RCR2596 (540 RPM) RCR2510 (540 RPM)

Machine Weight (With Front and Rear Chain Shields)

Hitch

Cutting Width 7' - 10" 9' - 10"

Overall Width 8' - 3 3/4" 10' - 3' 1/2"

Overall Length

Deck Height 9 5/8"

Cutting Height 2" - 12" 2' - 10 1/2"

Cutting Capacity 1 1/2"

Tractor H.P. Rating (PTO)

PTO Speed

Gearbox Rating H.P. Center - 100 HP Outboard 60 HP

Gearbox  (Speed up beveled gears)

Gearbox Lubrication 80-90W EP

Gearbox Oil Capacity End Boxes

T- Bo x

Gear box Input/ Output Shaft Size

Deck Material Thickness 10 gauge

Deck Side Skirt Thickness

Skids Replaceable

Stump Jumper Round Pan 3/16"

Blades (2)

Blade Bolts Keyed with Harden Flat Washer and Lock Nut

Blade Tip Speed 540 RPM 14,592 fpm 540 RPM 17,749 fpm

Driveline Cat 4, w/Equal Angle U-Joint

Driveline Protection 540 rpm - 4 plate slip clutch

Tailwheel Option

Lift-Type (2 ea.)

Pull-Type (2 ea.)

Optional Safety Shields Front & Rear Chain/ Front & Rear Rubber



4" x 8" x 15 1/4" Laminated 6" x 9" x 21" Laminated or 24" Recap Aircraft tires

Lift-Type 1,380 lbs.

Pull-Type 1,665 lbs.

Lift-Type Category 1 & 2

Quick-Hitch adaptable

Pull-Type - w/Dual Level Rods

Lift-Type: 8' - 6"

Pull-Type: 12' - 1/4"

Lift-Type: 50 - 110

Pull-Type: 40 - 110

540 rpm PTO Driven Gearbox

Cast Iron Housing, Beveled Gears

2.5 Pints

4.5 Pints

Input Shaft = 1 3/4" - 20 Spline

Output Shaft = 2" Dia.

1/2" x 4" Heat Treated

Free-Swinging Suction Blades

Lift-Type 1,750 lbs

Pull-Type 2,035 lbs.

Lift-Type Category 2 & 3

Quick-Hitch adaptable

Pull-Type - w/Dual Level Rods

Lift-Type: 9' - 0"

Pull-Type: 12' - 9 1/2"

Lift-Type: 60 - 110

Pull-Type: 50 - 110

2.5 Pints

4.5 Pints

Cat 4 w/Equal Angle U-Joint or

Constant Velocity U-Joint

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 43

Table of Contents

Section 6: Specifications & Capacities

RCR2596 = 99 3/4"

38 1/2"

RCR2510 = 123 1/2"

5/26/16

10 3/4"

RCR2596 = 102"

RCR2510 = 108"

3-Point Type RCR25 Series

26815

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 44

Table of Contents

Section 6: Specifications & Capacities

RCR2596 = 99 3/4"

RCR2510 = 123 1/2"

13 1/4"

37 1/4"

RCR2596 = 144 1/4"

RCR2510 = 153 1/2"

RCR2596 & RCR2510 Rotary Cutters 327-147M

26816

Pull Type RCR25 Series

5/26/16

Page 45

Table of Contents

Section 7: Features and Benefits

RCR25 Series

Features Benefits

Surpassed rugged  industry standards

Tractor HP range

Gearbox HP rating 120 Horsepower on splitter gearbox and 60 HP on outboard gearboxes.

5 Year gearbox warranty Shows our confidence in the gearbox integrity.

3 Gearboxes Allows equal torque to be spread to left and right gearbox.

Splined rubber flex- couplers between the center and outboard gearboxes

Constant Velocity U-Joint option on RCR2510 Pull-type

Slip-clutch protection  on main driveline

3-Point or Pull-type

High productive cutting width

Fully welded 10 Gauge deck Fully welded deck adds rigidity.

3/16" Sidewall thickness Protects sidewalls from thrown objects.

Obstacle free underside Underside of deck is free of reinforcement members which tend to allow material to lodge.

Round back design

Dual leveling rods  on Pull-type

Chain or rubber shield option Reduces flying debris.

Full length skids with replaceable shoes

Splined blade hub Splined blade hub offers tight non-slipping attachment to output shaft.

3/16" Round stump jumper

1" x 4" Blade bar Heavy-duty blade bar adds support to stump jumper as well as gearbox output shaft.

1/2" x 4" Heat-treated blades Heat-treated blades last longer than non-heat-treated blades.

1 1/2" Dia. cutting capacity Aids in cutting brush.

High Blade tip speed

Laminated tires Laminated tires can handle almost any condition.

Airplane tires (Pull-Type only) Airplane tires offer smooth roadability.

Quick-Hitch Compatible Allows for quick and easy one person hook-up.

All Great Plains Cutters have been designed and tested and meet rigorous voluntary testing procedures specified by ANSI.

3-point (2596 Model = 50 - 110 HP) & (2510 Model = 60 - 110 HP) Pull-type (2596 Model = 30 - 110 HP) & (2510 Model = 50 - 110 HP)

Protects the driveline and gearboxes from hard objects in the blade path.

Reduces chatter and extends life of U-joint during turns.

Slip-clutch is more convenient than shear-bolt, protects gearbox against sudden impact.

Pull-type fits older tractors without a top link or smaller tractors without enough lift capacity. (RCR2596 3-point: Cat. 1 & 2) (RCR2510 3-point: Cat. 2 & 3)

RCR2596 cuts 8'-0" width. RCR2510 cuts 9'-10" width.

Allows for cleaner and efficient discharge of material, helps eliminate damage to rear corners by not sticking out.

Dual leveling rods eliminate deck twisting when going over uneven terrain.

Adds reinforcement to side panels. Replaceable shoes allows for change before wearing through to weld-on piece.

Standard stump jumper aids in sliding over obstructions, which helps protect gearbox output shaft.

RCR2596 (540 RPM) = 14,792 FPM RCR2510 (540 RPM) = 17,749 FPM Means Cleaner Cutting of material.

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 46

Table of Contents

Section 8: Troubleshooting

Troubleshooting Chart

Problem Cause Solution

Gearbox overfilled Drain to side plug hole

Oil seal leaking

Driveline yoke or cross failing

Driveline clutch is slipping

Bent Driveline (NOTE: driveline should be repaired or replaced if bent)

Driveline telescoping tube failing Shock load Avoid hitting solid objects

Seals damaged Replace seals

Grass or wire wrapped on shaft in seal area

Shock load Avoid hitting solid objects

Needs lubrication Lubricate every 8 hours

Scalping the ground Raise cutting height

Cutting too fast Reduce travel speed

PTO being engaged too  fast at high engine rpm

Cutting over solid objects Avoid solid objects

Contacting frame Reduce lift height in transport position

Contacting drawbar Reposition drawbar

Bottoming out Shorten driveline

check seal areas daily

Slowly engage PTO at low engine rpm

Driveline  telescoping tube wearing

Blades wearing excessively

Blades breaking

Blades coming loose

Blade carrier becomes loose

Blade bolt holes worn Blade hardware running loose Replace blades and blade bolts if worn

Blade carrier bent Hitting solid objects

Excessive side skid wear

Tail wheel support failing

Excessive vibration

Needs lubrication Lubricate every 20 hours

Cutting on  sandy ground

Contacting  ground frequently

Hitting solid objects Avoid hitting solid objects

Blades hitting each other Blade carriers need to be timed

Blades not  tightened properly

Improper deck attitude Lower front of deck, see page 22

Running loose in the past Replace gearbox output shaft and blade carrier

Blade carrier hardware not tight enough

Cutting height not level Adjust cutter height

Soil abrasive Adjust cutter height

Cutting too low Adjust cutter height

Lowering too fast Adjust rate of drop

Hitting objects when turning Reduce speed on turns

Driveline bent Replace driveline

Blades loose Tighten blade bolts

Blade carrier bent Replace blade carrier

Blade broken Replace blade

Blade will not swing Remove and inspect blade

Blades have unequal weight Replace both blades

Raise cutting height

Tighten blade hardware refer to Cutter Blade Maintenance on page 32.

Tighten to specified torque

Avoid hitting solid objects and replace blade carrier

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 47

Table of Contents

5.8

8.8

10.9

Section 9: Torque & Tire Inflation Charts

Torque Values Chart for Common Bolt Sizes

Bolt Head Identification Bolt Head Identification

Bolt Size

(inches) Grade 2 Grade 5 Grade 8

in-tpi

1/4" - 20 7.45.611 81612M 5 X 0.8 436597

1/4" - 28 8.5 6 13 10 18 14 M 6 X 1 7 5 11 8 15 11

5/16" - 18 15 11 24 17 33 25 M 8 X 1.25 17 12 26 19 36 27

5/16" - 24 17 13 26 19 37 27 M 8 X 1 18 13 28 21 39 29

3/8" - 16 27 20 42 31 59 44 M10 X 1.5 33 24 52 39 72 53

3/8" - 24 31 22 47 35 67 49 M10 X 0.75 39 29 61 45 85 62

7/16" - 14 43 32 67 49 95 70 M12 X 1.75 58 42 91 67 125 93

7/16" - 20 49 36 75 55 105 78 M12 X 1.5 60 44 95 70 130 97

1/2" - 13 66 49 105 76 145 105 M12 X 1 90 66 105 77 145 105

1/2" - 20 75 55 11 5 85 165 120 M14 X 2 92 68 145 105 200 150

9/16" - 12 95 70 150 110 210 155 M14 X 1.5 99 73 155 115 l215 160

9/16" - 18 105 79 165 120 235 170 M16 X 2 145 105 225 165 315 230

5/8" - 11 130 97 205 150 285 210 M16 X 1.5 155 115 240 180 335 245

5/8" - 18 150 110 230 170 325 240 M18 X 2.5 195 145 310 230 405 300

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 1.5 310 230 650 480 900 665

7/8" - 14 250 185 640 475 905 670 M24 X 3 480 355 760 560 1050 780

1" - 8 340 250 875 645 1230 910 M24 X 2 525 390 830 610 1150 845

1" - 12 370 275 955 705 1350 995 M30 X 3.5 960 705 1510 112 0 2100 1550

1-1/8" - 7 480 355 1080 795 1750 1290 M30 X 2 1060 785 1680 1240 2320 1710

1-1/8" - 12 540 395 1210 890 1960 1440 M36 X 3.5 1730 1270 2650 1950 3660 2700

1-1/4" - 7 680 500 1520 1120 2460 1820 M36 X 2 1880 1380 2960 2190 4100 3220

1-1/4" - 12 750 555 1680 1240 2730 20101 in-tpi = nominal thread diameter in inches-threads per inch

1-3/8" - 6 890 655 1990 1470 3230 23802 N· m = newton-meters

1-3/8" - 12 1010 74 5 2270 1670 3680 27103 ft-lb= foot pounds

1-1/2" - 6 1180 870 2640 1950 4290 31604 mm x pitch = nominal thread diameter in millimeters x thread

1-1/2" - 12 1330 980 2970 2190 4820 3560

Torque tolerance + 0%, -15% of torquing values. Unless otherwise specified use torque values listed above.

N · m 2ft-lb 3N · m ft-lb N · m ft-lb mm x pitch 4N · m ft-lb N · m ft-lb N · m ft-lb

Bolt Size

(Metric) Class 5.8 Class 8.8 Class 10.9

pitch

Additional Torque Values

Flex Coupler Nuts 35 to 40 ft-lbs. (Beaded washer should be embedded halfway into rubber

Blade Bolt Lock Nut 450 ft-lbs

Blade Carrier Hub Nut 450 ft-lbs minimum

Wheel Lug Nuts 85 ft-lbs

5/26/16

Tire Inflation Chart

T i r e S i z e Inflation PSI

24" x 7.7" AC Tire 40

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 48

Table of Contents

Section 9: Torque & Tire Inflation Charts

RCR2596 & RCR2510 Rotary Cutters 327-147M

5/26/16

Page 49

Section 10: Warranty

Great Plains (a division of Great Plains Manufacturing, Inc.) warrants to the original purchaser that this Great Plains unit will be free from defects in material and workmanship for a period of one year from the first use date when used as intended and under normal service and conditions for personal use; ninety days for custom/commercial or rental use.

An extended limited warranty covers the gearbox only:

This Warranty is limited to the replacement of any defective part by Great Plains and the installation by the dealer of any such replacement part. Great Plains reserves the right to inspect any equipment or part which are claimed to have been defective in material or workmanship.

The following items and/or conditions are not warrantable abuse or misuse of the equipment, failures occurring as a result of accidental damage or acts of God, failures resulting from alterations or modifications, failures caused by lack of normal maintenance as outlined in the operator’s manual, repairs made by non-authorized personnel, items replaced or repaired due to normal wear (such as wear items and ground engaging components), repeat repair due to improper diagnosis or repair by the dealer, temporary repairs, service calls and/or mileage to and from customer location, overtime premium, or unit hauling expenses. The warranty may be voided if the unit is towed at speeds in excess of 20 miles per hour (32 kilometers per hour), or is used in soils with rocks, stumps, or other obstructions.

Great Plains reserves the right to make changes in materials or design of the product at any time without notice. The warranty shall not be interpreted to render Great Plains liable for damages of any kind, direct or consequential or contingent to property. Furthermore, Great Plains shall not be liable for damages resulting from any cause beyond its control. This warranty does not extend to crop loss, losses caused by planting or harvest delays or any expense or loss of labor, supplies, rental machinery, or for any other reason.

No other warranty of any kind whatsoever express or implied, is made with respect to this sale; and all implied warranties of merchantability and fitness for a particular purpose which exceed the obligations set forth in this written warranty are hereby disclaimed and excluded from this sale.

This warranty is not valid unless the unit is registered with Great Plains within 10 days from the date of the original

Table of Contents

Warranty

• 5 years parts and labor.

: failures resulting from

purchase.

IMPORTANT: The Online Warranty Registration should be completed by the dealer at the time of purchase. This information is necessary to provide you with quality customer service.

Model Number ____________________ Serial Number ____________________

5/26/16

RCR2596 & RCR2510 Rotary Cutters 327-147M

Page 50

Great Plains, Mfg.

1525 E. North St. P.O. Box 5060 Salina, KS 67402

GREAT PLAINS RCR2596, RCR2510 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Important Safety Information

These are common practices that may or may not be applicable to the products described in this manual.

For Your Protection

These are common practices that may or may not be applicable to the products described in this manual.

Use A Safety Chain

Practice Safe Maintenance

These are common practices that may or may not be applicable to the products described in this manual.

Prepare for Emergencies

Tire Safety

Use Seat Belt and ROPS

Keep Riders Off Machinery

Introduction

Application

Owner Assistance

Serial Number

Using This Manual

Section 1: Assembly & Set-up

Tractor Requirements

Weight & Horsepower

PTO Type & Speed

Pull-Type Hitch

3-Point Hitch

Dealer Preparations

Torque Requirements

Gearbox Vent Plugs & Dipsticks

Vent Plug Installation

Pull-Type Cutter

Hitch Assembly

Equal Angle Driveline Installation

Constant Velocity Driveline Installation

Pull-Type Tractor Hook-Up

Safety Chain

3-Point Lift-Type Cutter

Hitch Assembly

Driveline Installation

3-Point Tractor Hook-Up

Driveline Hook-up to Tractor PTO

Check Driveline Collapsible Length

Shorten Driveline

Check Driveline Interference

Check Chains

Section 2: Assembly of Optional Equipment

Chain Safety Guards (Optional)

Rubber Safety Guards (Optional)

Section 3: Adjustments

Pull-Type Leveling & Cutting Height

Pull-Type Cutting Height

Deck Leveling From Front to Back

3-Point Leveling & Cutting Height

Deck Leveling From Left to Right

Deck Leveling From Front to Rear

Center Link Adjustment

Tailwheel Height Adjustment

Section 4: Operating Procedures

Operating Checklist

Safety Information

Inspection of Tractor & Cutter

Blade Engagement & Disengagement

Blade Engagement

Blade Disengagement

Transporting

Field Operation

Turning Angles for Pull-Type Cutters

Crossing Steep Ditches & Banks

Unhook 3-Point Cutter

Unhook Pull-Type Cutter

General Operating Instructions

Section 5: Maintenance & Lubrication

Maintenance

Tire Maintenance

Cutter Blade Maintenance

Slip-Clutch Protected Drivelines

Skid Shoe Maintenance

RCR2596 Dual End Flex Couplers

RCR2510 Dual End Flex Couplers