Page 1: Rotary Mower
READ, UNDERSTAND, and FOLLOW the Safety and Operation Instructions contained in this manual before operating the equipment. C01- Cover ® RHINO 1020 S. Sangamon Ave. Gibson City, IL 60936 800-446-5158 Email: parts@servis-rhino.com ©2008 Alamo Group Inc. ROTARY MOWER Part NO. 00779477C $0.00...
Page 2 To the Owner/Operator/Dealer All implements with moving parts are potentially hazardous. There is no substitute for a cautious, safe-minded operator who recognizes the potential hazards and follows reasonable safety practices. The manufacturer has designed this implement to be used with all its safety equipment properly attached to minimize the chance of accidents.
Page 3: Table Of Contents
TABLE OF CONTENTS SAFETY SECTION ... 1-1 General Safety Instructions and Practices ... 1-2 Operator Safety Instructions and Practices ... 1-3 Equipment Operation Safety Instructions and Practices... 1-5 Connecting or Disconnecting Implement Safety Instructions and Practices ... 1-10 Transporting Safety Instructions and Practices ... 1-11 Maintenance and Service Safety Instructions and Practices ...
Page 4 Mower Pre-Operation Inspection/Service ... 4-15 Cutting Component Inspection... 4-18 Blade Bolt Inspection ... 4-20 DRIVING THE TRACTOR AND IMPLEMENT ... 4-23 Starting the Tractor ... 4-24 Brake and Differential Lock Setting... 4-24 Raising the Mower ... 4-25 Driving the Tractor and Mower... 4-25 Crossing Ditches and Steep Inclines ...
Page 5 In order to reduce accidents and enhance the safe operation of mowers, Alamo Group Ag Division, in cooperation with other industry manufacturers has developed the AEM/FEMA Industrial and Agricul- tural Mower Safety Practices video and guide book. The video will familiarize and instruct mower-tractor operators in safe practices when using industrial and agricultural mowing equipment.
Page 6 Alamo Group Ag. Division is willing to provide one (1) AEM Mower Safety Practices Video Please Send Me: VHS Format – AEM/FEMA Mower Operator Safety Video DVD Format – AEM/FEMA Mower Operator Safety Video Mower Operator’s Manual AEM Mower Operator’s Safety Manual Requester Name Requester Address: City...
Page 8: General Safety Instructions And Practices
General Safety Instructions and Practices A careful operator is the best operator. Safety is of primary importance to the manufacturer and should be to the owner/operator. Most accidents can be avoided by being aware of your equipment, your surroundings, and observing certain precautions.
Page 9: Operator Safety Instructions And Practices
Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. Operator Safety Instructions and Practices The rotating parts of this machine continue to rotate even after the PTO has been turned off. The operator should remain in his seat for 60 seconds after the brake has been set, the PTO disengaged, the tractor turned off, and all evidence of rotation has ceased.
Page 10 Always read carefully and comply fully with the manufacturer’s instructions when handling oil, solvents, cleansers, and any other chemical agent. KEEP AWAY FROM ROTATING ELEMENTS to prevent entanglement and possible serious injury or death. Never allow children to play on or around Tractor or Implement. Children can slip or fall off the Equipment and be injured or killed.
Page 11: Equipment Operation Safety Instructions And Practices
DO NOT operate this Implement on a Tractor that is not properly maintained. Should a mechanical or Tractor control failure occur while operating, immediately shut down the Tractor and perform repairs before resuming operation. Serious injury and possible death could occur from not maintaining this Implement and Tractor in good operating condition. (SG-36) Avoid contact with hot surfaces of the engine or muffler.
Page 12 Do not operate Mower if excessive vibration exists. engine. Inspect the Mower to determine the source of the vibration. missing or damaged replace them immediately. blades have been replaced and the Mower operates smoothly. Operating the Mower with excessive vibration can result in component failure and broken objects to be thrown outward at very high velocities.
Page 13 Start tractor only when properly seated in the Tractor seat. Starting a tractor in gear can result in injury or death. Read the Tractor operators manual for proper starting instructions. Do not operate this Equipment with hydraulic oil or fuel leaking. Oil and fuel are explosive and their presence could present a hazard.
Page 14 Mow only in conditions where you have clear visibility in daylight or with adequate artificial lighting. Never mow in darkness or foggy conditions where you cannot clearly see at least 100 yards(90 m) in front and to the sides of the tractor and mower. Make sure that you can clearly see and identify passersby, steep slopes, ditches, drop-offs, overhead obstructions, power lines, debris and foreign objects.
Page 15 Avoid mowing in reverse direction when possible. persons behind the mower and use extreme care when mowing in reverse. Mow only at a slow ground speed where you can safely operate and control the tractor and mower. Never mow an area that you have not inspected and removed debris or foreign material. (SGM-8) Do not mow with two machines in the same area except with Cab tractors with the windows closed.
Page 16: Connecting Or Disconnecting Implement Safety Instructions And Practices
Rotary Mowers are capable under adverse conditions of throwing objects for great distances (300 feet or more) and causing serious injury or death. Follow safety messages carefully. STOP MOWING IF PASSERSBY ARE WITHIN 100 YARDS UNLESS: -Front and Rear Deflectors, Chain Guards, or Bands are installed and in good, workable condition;...
Page 17: Transporting Safety Instructions And Practices
Always shut the Tractor completely down, place the transmission in park, and set the parking brake before you or anyone else attempts to connect or disconnect the Implement and Tractor hitches. Never operate the Tractor and Mower if the Implement input driveline is directly connected to the Tractor transmission.
Page 18 Transport only at speeds where you can maintain control of the equipment. Serious accidents and injuries can result from operating this equipment at high speeds. Understand the Tractor and Implement and how it handles before transporting on streets and highways. Make sure the Tractor steering and brakes are in good condition and operate properly.
Page 19: Maintenance And Service Safety Instructions And Practices
Maintenance and Service Safety Instructions and Practices Make sure the PTO shield, integral driveline shields, and input shields are is installed when using PTO-driven equipment. Always replace any shield if it is damaged or missing. Relieve hydraulic pressure prior to doing any maintenance or repair work on the Implement.
Page 20 Periodically inspect all moving parts for wear and replace when necessary with authorized service parts. Look for loose fasteners, worn or broken parts, and leaky or loose fittings. Make sure all pins have cotter pins and washers. Serious injury may occur from not maintaining this machine in good working order.
Page 21: Storage And Parking Safety Instructions And Practices
Rhino mowers use balanced and matched system components for blade carriers, blades, cuttershafts, knives, knife hangers, rollers, drivetrain components, and bearings. These parts are made and tested to Rhino specifications. Non-genuine "will fit" parts do not consistently meet these specifications. The use of “will fit” parts may reduce mower performance, void warranties, and present a safety hazard.
Page 22: Decal Location
SAFETY Decal Location NOTE: Rhino supplies safety decals on this product to promote safe operation. Damage to the decals may occur while in shipping, use, or reconditioning. Rhino cares about the safety of its customers, operators, and bystanders, and will replace the safety decals on this product in the field, free of charge (Some shipping and handling charges may apply).
Page 23 ITEM PART NO. D389 D388 D395 00776678 00760657 D302 D303 00785185 2738332 00756004 00756005 03200347 00776031 00779477C 10058000 00024100 02959924 D454 * Furnished by Tractor Manufacturer ** Furnished by Driveline Manufacturer Decal Sheets Name 00781352 (SAFETY) Name 00785176 (LOGOS) EC72 03/08 ©...
Page 24: Decal Description
Decal Description Multi Hazard Decal Sheet P/N D389 Decal D389 consists of the following multi-hazards. EC72 03/08 © 2006 Alamo Group Inc. SAFETY Safety Section 1-18...
Page 25 SAFETY Driveline Hazards P/N D388 Decal D388 consists of the following multi-hazards. EC72 03/08 Safety Section 1-19 © 2008 Alamo Group Inc.
Page 26 IMPORTANT! Always replace blades in pairs. P/N D395 DANGER! Shear Bolt Entanglement. P/N 00776678 For safety and to guarantee optimum product reliability always use genuine RHINO replacement parts. P/N 00760657 Logo Product Name: Rhino P/N D302 EC72 03/08 © 2006 Alamo Group Inc. SAFETY Safety Section 1-20...
Page 27 Logo Product Name: Rhino P/N D303 EC72 Logo P/N 00785185 Red Reflectors P/N 2738332 DANGER! Guard Missing, Do Not Operate. If you see this decal, Do Not Operate the mower until the shield has been replaced. P/N 00756004 EC72 03/08 ©...
Page 28 DANGER! Rotating Driveline Keep Away, Contact can cause death. P/N 00756005 Slow Moving Vehicle Decal. Keep SMV reflector clean and visible. DO NOT transport or operate without the SMV. Provided by Tractor Manufacturer. Replace if missing on tractor. P/N 03200347 Read Operator’s Manual! The operator’s manual is located inside this canister.
Page 29: Federal Laws And Regulations
Federal Laws and Regulations This section is intended to explain in broad terms the concept and effect of federal laws and regulations concerning employer and employee equipment operators. interpretation of the law and should not be considered as such. Employer-Employee Operator Regulations U.S.
Page 76 This Rotary Mower is designed with care and built with quality materials by skilled workers. Proper assembly, maintenance, and operating practices, as described in this manual, will help the owner/operator get years of satisfactory service from the machine. The purpose of this manual is to familiarize, instruct, and train. The Assembly Section instructs the owner/ operator in the correct assembly of the Mower using standard and optional equipment.
Page 77 Your RHINO EC72 mower is designed for light-duty cutting such as pasture mowing, weed and grass control, and cutting brush up to 1" in diameter. With a reasonable amount of preventive maintenance, your Mower will provide years of dependable service.
Page 78 INTRODUCTION Attention Owner/Operator BEFORE OPERATING THIS MACHINE: 1. Carefully read the Operator’s Manual, completely understand the Safety Messages and instructions, and know how to operate correctly both the tractor and implement. 2. Fill out the Warranty Card in full. Be sure to answer all questions, including the Serial Number of the implement.
Page 80: Dealer Setup Instructions
ASSEMBLY DEALER SETUP INSTRUCTIONS Set up mower as received from factory with these instructions. This mower is shipped partially assembled. Assembly will be easier if components are aligned and loosely assembled before tightening hardware. Refer to bolt torque chart in Maintenance Section. All bolts are Grade 5 unless otherwise specified.
Page 81: A-Frame Installation
A-FRAME INSTALLATION 1. Attach the A-Frame Bars (1) to the right and left Hitch Lugs (2) with two Cat. 1 Hitch Pins (3), 5/8” Flatwashers (4), and Nuts (5). 2. Attach the Lift Strap Bars (6) to the Mainframe with two M12 x 40 Bolts (7), Flatwashers (8) and Nuts (9). 3.
Page 82: Tailwheel Installation
TAILWHEEL INSTALLATION 1. Align Tail Wheel Beam Weldment (1) between pivot brackets located behind gearbox mount on the Mainframe Weldment. Note: Long side of caster fork pivot tube is positioned up. Attach the Tail Wheel Beam Weldment (1) to the Mainframe Weldment with one Bolt (2), and Nut (3). Slide Tail Wheel Beam Weldment (1) into Gauge Wheel Mount and retain with two Bolts, (4) Flatwasher (5), and Nuts (6).
Page 83: Shear Bolt Or Slip Clutch Driveline Installation
SHEAR BOLT or SLIP CLUTCH DRIVELINE INSTALLATION Attach rear driveline of U-Joint to input shaft on gearbox, install snap ring in groove on input shaft. NOTE: Check that Snap Ring is properly seated in groove. This snap ring retains driveline when shear bolt shears. Install Grad 2 (Only) shear bolt 1/2”...
Page 84 ASSEMBLY Front Rubber Fabric Deflectors (Standard Equipment) Front Deflector (Figure AsmP-R-0064) Attach the Front Deflector to the Mower with Bolts, Flatwashers, and Locknuts. Rear Metal Band - Figure AsmP-R-0063 Attach Deflectors to deck using 1/2” x 1-1/4” Bolts and Locknuts (6). r. EC72 03/08 Assembly Section 3-6 ©...
Page 85: Check Chains (Extra Equipment) - Figure Asm-R-0279
CHECK CHAINS (Extra Equipment) - FIGURE Asm-R-0279 Check chains are available for attachment to front of cutter as an accessory. Check chains are used to control cut height and especially allows cutter to always be lowered to the same preset cut height. Drill a 11/16"...
Page 86: Offset Adapter Hitch (Extra Equipment)
OFFSET ADAPTER HITCH (EXTRA EQUIPMENT) Fasten the Offset Adapter Tube to the three-Point Lift Lugs using the hitch Pin Holes. Fasten the Adjustable Leg to the right Lug to offset the Mower to the right. Fasten the Adjustable Leg to the left Lug to offset the Mower to the Left.
Page 88: Operation Instructions
RHINO EC72 ROTARY MOWER OPERATION INSTRUCTIONS Rhino EC72 rotary mowers are manufactured with quality material by skilled workers. These mowers are designed to cut grass, weeds, small brush and other vegetative material up to 1” diameter in areas such as pastures, industrial areas, and roadsides.
Page 89: Standard Equipment And Specifications
Standard Equipment and Specifications Horsepower Required Cutting Capacity (Max.) Cutting Height Safety Deflector Cutting Width Overall Length Weight (Approx.) Hitch Blade Carrier Blade Tip Speed (FPM) Gearbox Rating: 540 RPM Output Shaft Diameter Driveline Size Deck Thickness Side Skirt Transport Width *Ratings based on actual field performance.
Page 90: Operator Requirements
2. OPERATOR REQUIREMENTS Safe operation of the unit is the responsibility of a qualified operator. A qualified operator has read and understands the implement and tractor Operator’s Manuals and is experienced in implement and tractor operation and all associated safety practices. In addition to the safety messages contained in this manual, safety signs are affixed to the implement and tractor.
Page 91: Tractor Requirements
3. TRACTOR REQUIREMENTS The tractor used to operate the mower must have the power capacity to lift, pull, and operate the Power Take Off (PTO) at the mower’s rated speed while traveling at a ground speed between 2 and 5 MPH. Operating the mower with a tractor that does not meet the following requirements may cause tractor or mower damage and be a potential danger to the operator and passersby.
Page 92: Tractor Horsepower
3.3 Tractor Horsepower The power required to operate a mower is determined by the tractor PTO horsepower. For most mowing conditions, the EC72 mower requires a tractor with at least 30 HP. Operating the mower with a tractor that does not have adequate power may damage the tractor engine. Exceeding 75 HP may cause mower damage by overpowering the unit in heavy cutting conditions.
Page 93: Getting On And Off The Tractor
DO NOT use a PTO adapter to attach a non-matching Implement driveline to a Tractor PTO. Use of an adapter can double the operating speed of the Implement resulting in excessive vibration, thrown objects, and blade and implement failure. Adapter use will also change the working length of the driveline exposing unshielded driveline areas.
Page 94: Dismounting The Tractor
Never allow children or other persons to ride on the Tractor or Implement. Falling off can result in serious injury or death. 4.2 Dismounting the Tractor Before dismounting, park the tractor and implement on a reasonably level surface, apply the parking brake, idle the engine down, disengage the PTO, and lower the implement to the ground.
Page 95: Connecting The Mower To The Tractor
Start tractor only when properly seated in the Tractor seat. Starting a tractor in gear can result in injury or death. Read the Tractor operators manual for proper starting instructions. 6. CONNECTING THE MOWER TO THE TRACTOR Use extreme caution when connecting the mower to the tractor. The mower should be securely resting at ground level or setting on blocks.
Page 96: Safety Chains
Note: Offset Adaptor Hitches are available to position the mower to the left or right. Mowers with Offset Adaptor hitches connect to the 3-Point hitch the same way as the mower A-frame. Mowers with Cat 1 Hitch will be offset approximately 13” with the use of this accessory. See Offset Hitch in the Assembly Section for details to equip the mower with this feature.
Page 97: Setting Deck Pitch
5. Level the mower side to side by manipulating one lower lift arm length. On most tractors, at least one of the lift arms is designed to allow for manipulation of its length. Shortening or extending will allow for deck leveling from side to side.
Page 98: Driveline Attachment
DRIVELINE ATTACHMENT The driveline yoke and tractor PTO shaft must be dirt free and greased for attachment. To connect the mower driveline to the tractor PTO output shaft, twist the driveline yoke collar and align the grooves and splines of the yoke with those of the PTO shaft.
Page 99 “Bottoming Out” Check Procedure • Disconnect driveline from the tractor and slide the profiles together until fully compressed. • Place a mark on the inner shield 1/8” from the end of the outer shield. • Reattach the driveline to the PTO Shaft. •...
Page 100: Pre-Operation Inspection And Service
8. PRE-OPERATION INSPECTION AND SERVICE Before each use, a pre-operation inspection and service of the implement and tractor must be performed. This includes routine maintenance and scheduled lubrication, inspecting that all safety devices are equipped and functional, and performing needed repairs. DO NOT operate the unit if the pre-operation inspection reveals any condition affecting safe operation.
Page 101: Tractor Pre-Operation Inspection/Service
8.1 Tractor Pre-Operation Inspection/Service Refer to the tractor operator’s manual to ensure a complete pre-operation inspection and scheduled service performed according manufacturers recommendations. are some of the items that require daily service and inspection: • Tire condition/air pressure • Wheel lug bolts •...
Page 102 • Perform scheduled lubrication as detailed in the maintenance section. • Ensure all decals are in place and legible. • Ensure the driveline is securely attached to tractor. Make sure the driveline yoke locking collar is securely seated in the grooves of the PTO shaft by pushing and pulling the yoke several times.
Page 103 • Lift Type-Ensure the tailwheel beam position support bolts are properly installed and tightened. • Inspect all bolts and screws and tighten to the recommended torque. OPS-R-0039_E • Ensure the tractor PTO master shield and the mower slip clutch shield are in place, lowered, and in good condition.
Page 104: Cutting Component Inspection
• Inspect blades and blade bolts for looseness and excessive wear. Make sure the mower is securely blocked up before crawling beneath. Replace damaged, worn and missing blades as complete sets to maintain rotary balance during operation. • Ensure carrier hub nut is tightened with the cotter pin inserted and spread.
Page 105 Inspect the Blades daily for abnormal wear. REPLACE BOTH BLADES on that carrier IMMEDIATELY if either blade has: • Become bent or deformed from it’s original shape or • Any cracks are visible, or • Deep gouges in the blade’s surface are persent, or •...
Page 106: Blade Bolt Inspection
8.4 Blade Bolt Inspection Inspect Blade Bolt Head daily for wear as followed: Inspect the Blade Bolt Heads daily for abnormal wear. REPLACE BOTH BLADE BOLTS on the Blades IMMEDIATELY if either blade bolts has: • Visible cracks or • If the blade bolt crown is worn off or •...
Page 107 Tractor PRE-OPERATION Inspection Mower ID#________________ Date: Before conducting the inspection, make sure the tractor engine is off, all rotation has stopped and the tractor is in park with the parking brake engaged. Make sure the mower is resting on the ground or securely blocked up and all hydraulic pressure has been relieved.
Page 108 Rotary Mower PRE-OPERATION Inspection Mower ID#________________ Date: Before conducting the inspection, make sure the tractor engine is off, all rotation has stopped and the tractor is in park with the parking brake engaged. Make sure the mower is resting on the ground or securely blocked up and all hydraulic pressure has been relieved.
Page 109: Driving The Tractor And Implement
9. DRIVING THE TRACTOR AND IMPLEMENT Safe tractor transport requires the operator possess a thorough knowledge of the model being operated and precautions to take while driving with an attached implement. Ensure the tractor has the capacity to handle the weight of the implement and the tractor operating controls are set for safe transport.
Page 110: Starting The Tractor
9.1 Starting the Tractor The procedure to start the tractor is model specific. Refer to the tractor operator’s manual for starting procedures for your particular tractor. Consult an authorized dealer if the starting procedure is unclear. Ensure the 3-point control lever is in the lowered position and the PTO is disengaged before starting the tractor.
Page 111: Raising The Mower
9.3 Raising the Mower Using the tractor 3-point hitch control lever, raise the mower off the ground about 6”, or just high enough to clear any ground obstacles. raising the mower, make sure all connection points are securely attached and at least 1” clearance is maintained between the driveline and the deck.
Page 112: Crossing Ditches And Steep Inclines
9.5 Crossing Ditches and Steep Inclines When crossing ditches with steep banks or going up sharp inclines, it is possible that the main driveline inner profile will penetrate into the outer housing to its maximum depth until the assembly becomes solid (driveline is at its extreme shortest length).
Page 113: Operating The Tractor And Implement
Inclines and ditches should be approached along a line which is at an angle as shown. This type of path will reduce the possibility of over-collapse of the driveline and resulting damage. If the gradient is so steep that such an approach increases the possibility of a tractor roll-over, select an alternate crossing path.
Page 114: Foreign Debris Hazards
Many varied objects, such as wire, cable, rope, or chains, can become entangled in the operating parts of the mower head. These items could then swing outside the housing at greater velocities than the blades. Such a situation is extremely hazardous and could result in serious injury or even death.
Page 115: Engaging The Power Take Off (Pto)
Rotary Mowers are capable under adverse conditions of throwing objects for great distances (300 feet or more) and causing serious injury or death. Follow safety messages carefully. STOP MOWING IF PASSERSBY ARE WITHIN 100 YARDS UNLESS: -Front and Rear Deflectors, Chain Guards, or Bands are installed and in good, workable condition;...
Page 116: Pto Rpm And Ground Speed
10.4 PTO RPM and Ground Speed Ground speed for mowing will depend upon the height, type, and density of vegetation to be cut. Recommended speed for efficient mower performance is between 2 and 5 mph(3-8 kph). Operate the mower at its full rated PTO speed to maintain blade speed for a clean cut. Refer to the tractor operator’s manual or the tractor instrument panel for the engine speed and gear to provide the required PTO and desired ground speed.
Page 117 Do not mow with two machines in the same area except with Cab tractors with the windows closed. (SGM-11) Mow only in conditions where you have clear visibility in daylight or with adequate artificial lighting. Never mow in darkness or foggy conditions where you cannot clearly see at least 100 yards(90 m) in front and to the sides of the tractor and mower.
Page 118 Do not let the Blades turn when the Mower Deck is raised for any reason, including clearance or for turning. Raising the Mower deck exposes the Cutting Blades which creates a potentially serious hazard and could cause serious injury or even death from objects thrown from the Blades. Large, dense, or wet vegetation may need to be mowed in two or more passes to achieve a uniform cut.
Page 119: Shutting Down The Implement
Do not mow, or drive the tractor into material that is burning, or areas that recently burnt and may contain hot spots. Burning material, sparks, and coals could be thrown from the mower to areas of vegetation that might ignite. Tire damage can occur when driving over hot material. Oil and grease on the tractor and mower could ignite resulting in equipment destruction.
Page 120: Disconnecting The Mower From The Tractor
11. DISCONNECTING THE MOWER FROM THE TRACTOR Before disconnecting the mower, the PTO must be disengaged and blade rotation at a complete stop. Move the mower to a level storage location and lower it to the ground. If the mower is not resting securely on the ground, block the mower up securely before attempting to disconnect it from the tractor.
Page 121 OPERATION To disconnect the mower, first extend the tractor 3- point hitch top link to remove tension on the top link hitch pin. When the pin is loose and easy to rotate, remove the pin from the mower. Next remove both lower hitch pins.
Page 122: Mower Storage
12. MOWER STORAGE Properly preparing and storing the mower at the end of the season is critical to maintaining its appearance and to help ensure years of dependable service. The following are suggested storage procedures: • Thoroughly clean all debris off the mower to prevent damage from rotting grass and standing water.
Page 123: Transporting On Public Roadways
Before transporting the tractor and mower, idle the tractor engine, disengage the PTO and wait for all mower moving parts to come to a complete stop. Once all mower parts are completely stopped, raise the mower to transport height. raising the mower, maintain 1” clearance between the driveline and mower deck.
Page 124 (Slow-Moving Vehicle) universal symbol used to alert drivers of the presence of equipment traveling on roadways at a slow speed. SMV signs are a triangular bright orange with reflective red trim for both easy day and night visibility. Make sure the SMV sign is clean and visible from the rear of the unit before transporting the tractor and implement on a public roadway.
Page 125: Hauling The Tractor And Implement
Reduce speed before turning or applying the brakes. Ensure that both brake pedals are locked together when operating on public roads. OPS-U- 0023 13.2 Hauling the Tractor and Implement Before transporting a loaded tractor and implement, measure the height and width dimensions and gross weight of the complete loaded unit.
Page 126 OPERATION Arrange the chains so that when tightened, the chains pulling downward against themselves. Carefully tighten the securing chains or other fasteners using boomers or binders to apply maximum tension. Use extreme care when attaching and removing the securing devices as the extreme tension involved when released has the potential to inflict serious injury.
Page 127: Troubleshooting Guide
14. TROUBLESHOOTING GUIDE Problem Possible Cause Excessive Vibration Check Gearbox Bolts Check for loose nuts on blade holder and blades. Check for bent output shaft. If shaft is bent, oil will normally leak from bottom seal. Check to see if blades are free swinging.
Page 128 Blade Bolts Working Loose Bolts not tightened. Bolt hole elongated or oversized. Locknut worn out. Gearbox Noisy Low Lubricant. Rough gears. Worn Bearing. Gearbox Leaking Damaged Oil Seal. Bent Shaft. Oil Seal Race rough. Oil Seal installed wrong. Oil Seal not sealing in the housing. Oil level too high.
Page 130: Lubrication
Before operating your Rotary Cutter, make sure it is properly lubricated and thoroughly inspected. Only a minimum of time and effort is required to regularly lubricate and maintain this machine to provide long life and trouble free operation. Always disengage the PTO before raising the Rotary Cutter for transporting or making adjustments.
Page 131: Gearbox
If required, oil should be added until it runs out hole. Recommended lubricant is NLGI 000 Grease, Servis-Rhino P/N 00769030. NOTE: Make sure mower is level when checking oil in the gearbox. NOTE: Overfilling of Gearbox will cause pressure to build up and cause Grease Seals to leak.
Page 132: Driveline Lubrication
DRIVELINE LUBRICATION Grease Fittings are located on the Cross Assembly of each U-Joint and on the telescoping tubes. Grease the U-Joint after each 8 hours of use. Figure MntP-R-0021. Do not force grease through Needle Assemblies. telescoping tubes after every 8 hours use. To grease profile tube, disconnect drive from PTO and pull halves apart.
Page 133: Blade Servicing
SHEAR PIN YOKE LUBRICATION Yoke is supplied with a grease fitting to lube between gearbox shaft and yoke. This allows yoke to spin freely on gearbox shaft when pin shears. Failure to lube may cause yoke to gall and spin weld to shaft.
Page 134: Blade Carrier Removal/Installation
BLADE CARRIER REMOVAL/INSTALLATION Avoid personal injury. Blade and/or blade carrier removal should be done only with the tractor engine shut off, key removed, in neutral, parking brake on, and PTO disengaged and the cutter blocked in the raised position. BLADE CARRIER REMOVAL Remove cotter pin and loosen slotted nut on gearbox shaft.
Page 135: Blade Removal
MAINTENANCE BLADE REMOVAL Remove locknut from blade bolt through inspection hole in deck of mower near the gearbox to remove blades for sharpening or replacement. See Figure MntP-R-0022. Always replace nut when replacing blade bolt. When installing blades be sure and check blade bolt pivot diameter for wear.
Page 136: Mower Storage
MAINTENANCE MOWER STORAGE Your rotary cutter represents an investment from which you should get the greatest possible benefit. Therefore, when the season is over, the cutter should be thoroughly checked and prepared for storage so that a minimum amount of work will be required to put it back into operation for the next season. The following are suggested storage procedures: 1.
Page 137: Gearbox Servicing
GEARBOX SERVICING TOOLS NEEDED FOR DISASSEMBLY AND ASSEMBLY OF GEARBOX Slide Hammer Puller Locktite #5900 Punch - Long Drift Needle Nose Pliers Screw Driver External Snap Ring Pliers Socket Wrench 9/16 Socket Ball Pin Hammer Pry Bar Be certain to clamp or securely support the gearbox and sub-assemblies to prevent injuries to hands and feet due to inadvertent dropping or falling over.
Page 138: Gearbox Disassembly
GEARBOX DISASSEMBLY 1. Remove 6 (16) bolts from input shaft bearing housing (13). 2. Tap around circumference of bearing housing (13) to loosen housing and shims. Then pull complete shaft (9) and housing assembly out of main housing. Figure Mnt-R-0247 3.
Page 139: Input Shaft Disassembly And Assembly (Figure Mnt-R-0212)
INPUT SHAFT DISASSEMBLY AND ASSEMBLY (Figure Mnt-R-0212) 1. Remove bearing housing (Ref. #13) by holding end of shaft which does not have a cross hole or splines and tap opposite end of shaft on a solid surface. Shock force will remove housing from bearing (Ref.#4). 2.
Page 140 DISASSEMBLY OUTPUT SHAFT 1. Install slotted nut (Ref #15, Figure Mnt-R-0211) onto shaft and then tap shaft end on a solid surface to remove lower bearing and spacer. 2. Remove retaining ring (Ref #28) and repeat above procedure to remove upper bearing. ASSEMBLY 1.
Page 141: Gearbox Input Shaft Rear Bearing
GEARBOX INPUT SHAFT REAR BEARING Remove bearing (Ref. #25 Figure Mnt-R-0211) from inside main housing. A special slide hammer puller (PROTO No. 4056) or equal may be required to remove bearing. Press in new bearing using a driving tube or pipe with approximate same OD.
Page 142: Limited Warranty
LIMITED WARRANTIES 1.01. Servis-Rhino warrants for one year from the purchase date to the original non-commercial, governmental, or municipal purchaser (“Purchaser”) and warrants for six months to the original commercial or industrial purchaser (“Purchaser”) that the goods purchased are free from defects in material or workmanship.
Page 143 To keep your implement running efficiently and safely, read your manual thoroughly and follow these directions and the Safety Messages in this Manual. The Table of Contents clearly identifies each section where you can easily find the information you need. The OCCUPATIONAL SAFETY AND HEALTH ACT requirements of tractor operators: REQUIRED OF THE OWNER:...
Page 144 EC72 ROTARY MOWER EC72-SOM-03/08 P/N 00779477C Printed U.S.A...

RHINO EC72 Operator's Manual

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Introduction Section

Assembly Section

Operation Section

Maintenance Section

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