Document Outline

• GR60
• GR72
• OPERATOR’S MANUAL
  • RHINO®
• To the Owner/Operator/Dealer
  • HEAVY-DUTY ROTARY CUTTER
• Alamo Group Ag. Division is willing to provide
• one (1) AEM Mower Safety Practices Video
• TABLE OF CONTENTS
  • Safety Messages
  • Decal Location
    • SAFETY SECTION
    • 1. 00725746 1 PELIGRO Get Manual Translated
    • 2. 00773723 1 PELIGRO Rotating Driveline Translation
    • 3. 00749117 1 DANGER Multi-Hazard
    • 4. 00756004 1 DANGER D/L Shield missing
    • 5. 00756005 1 DANGER Rotating Driveline
    • 6. 00756494 1 DANGER Driveline Hazards
    • 7. 00769737 1 DANGER Blades/Thrown Objects
    • 8. 00769736 1 WARNING Use/Repair Shields & Guards
    • 9. 00760657 1 IMPORTANT Genuine Parts, Rotary
    • 10. 00763613 1 INSTRUCT Slip Clutch Adjustment
    • 11. 00763977 1 INSTRUCT Notice to Owner
    • 12. D103 1 INSTRUCT 540 RPM Operation
    • 13. 03200347 * REFLECT SMV Emblem
    • 14. D302 2 LOGO Rhino (4-7/8 x 6-1/2)
    • 15. D303 2 L. NAME Rhino (4-3/8 x 16-3/4)
    • 16. D318 2 NAME GR60
      • D316 2 NAME GR72
    • 17. 00771283 1 WARRANTY 5 YR. (GR72 only)
    • 18. nfs 1 SER. PLT. GR60, GR72
    • 19. 2738332 2 REFLECT Red Reflector
    • 20. 00776481 1 INSTRUCT Operators Manual Inside
    • 21. 00776031 1 Canister, Operators Manual
    • 22. 00775743C 1 Operators Manual
    • 23. 10058000 3 Bolt
    • 24. 00024100 6 Flatwasher
    • 25. 02959924 3 Locknut
    • Decal Description
    • Federal Laws and Regulations
  • Attention Owner/Operator
    • INTRODUCTION SECTION
    • A-Frame Assembly (Figure Asm-00049)
      • 1. Attach the mower’s right and left upright braces (1) to the mower deck frame with one 5/8x 2” bolt (7) and locknut (9) one each side as illustrated in Asm-0049.
      • 2. Place the Flexible Hitch Top Link (3) and inner Bushing (4) between the right and left upright braces. Position the A-frames ...
      • 3. Align the free end of the Long Braces (2) to the respective sides of the mower deck support lugs as illustrated. Align holes ...
      • 4. Insert hitch pins for CAT I and II (12) into the top front holes of lift Lugs and retain using Lynch Pins (13).
  • Tailwheel Assembly
    • 1. To attach the tailwheel assembly (2) to the tailwheel beam (1), place a 1-1/2” flat washer (16) on the tailwheel assembly sha...
    • 2. One side at a time, align the bottom holes of the left and right tailwheel beam support brackets (3 and 4) with mower deck re...
    • 3. Place tailwheel positioning bracket (5) onto tailwheel beam with bracket holes to the bottom. Side the bracket to opposite end of beam.
    • 4. Place bushing (6) into tailwheel beam (1) end holes. Position tailwheel beam end between set of upright lugs behind mower gea...
    • 5. Pull tailwheel positioning bracket (5) against support brackets (3 and 4) and align holes of positioning bracket and support ...
    • NOTE: The rear deck height is set by raising or lowering the tailwheel beam to the desired height. Raise the positioning bracket on the support brackets to reduce the height of cut, lower the positioning bracket to increase the height.
    • 6. Tighten all bolts, lockwashers, and nuts to their recommended torque
    • Check Chains (Extra Equipment) for Lift-Models (Figure Asm-0011)
    • Offset Adapter Hitch - Extra Equipment (Figure Asm-0010)
      • 1. Fasten the Offset Adapter Hitch Weldment to the lift lugs using the Hitch Pin holes. Fasten the Adjustable Leg to the left si...
      • 2. Install the Brace Bars. Fasten the chain end to the rear mounting hole in the Gearbox Base Plate. Adjust the Brace Bar so the Hitch Assembly is nearly perpendicular.
      • 3. Attach the Cutter to the tractor. Install stabilizer bars or adjust sway chains to prevent side sway of the Cutter.
      • 4. Raise the Cutter to check clearance between the Driveline and Cutter Deck. Set the lift stop on the tractor to ascertain that the Driveline does not strike the deck.
    • Front Deflectors (Standard Equipment) and Chain Guards(Optional Equipment at Extra Cost)
      • 1. Attach the Front Bracket (1) to the front of the mower with 1/2" x 3" Bolts (3), Flatwashers (9) and Locknuts (4).
      • 2. Attach the Front Deflector (2) to the Bracket with 3/8" x 1-1/2" Bolts (5), Woodwashers (8), Flatwashers (6), and Locknuts (7).
        • 1. Attach the corner plate (1) to the side of the deck with a 1/2" x 1-1/4" Bolt (2), and Locknut (2).
        • 1. Attach both Deflectors (1 & 2) to deck using 1/ 2" x 1-1/4" Bolts (5) and Locknuts (6). In center of deck use Bolt 8) and Locknut (6) to tie both Deflectors (1 & 2) together.
        • 2. Secure Debris Deflector (3) to Deflector (1 & 2) using 1/2" x 1-1/4" Bolts (5), Bar (4), Flatwashers (7), and Locknuts (8).
        • 3. Fasten Rear Plate (9) on both ends of Deflector (1 & 2) using 1/2" x 1-1/4" Bolts (5) and Locknuts (6).
  • Front Chainguards (Optional Equipment)
    • 1. Attach Chainguard Plate (1) to deck using 5/8" x 3-1/2" Bolts (4), Washers (5), and Locknut (6).
    • 2. Insert the individual Chain Links (2) into slotted holes in Chain Guard Plate (1) and secure in place with Rod (3) (Complete Chainguard Assemblies are available. See Parts Section in this book.)
      • 1. Attach both Deflectors (1 & 2) to deck using 1/ 2" x 1-1/4" Bolts (4) and Locknuts (5). In center of deck use Bolt (7) and Locknut (5) to tie both Deflectors (1 & 2) together.
      • 2. Secure Chainguard Assembly (3) to Deflectors (1 & 2) using 1/2" x 1-1/4" Bolts (4), Flatwashers (6), and Locknuts (5).
      • 3. Fasten Rear Plate (8) on both ends of Deflectors (1 & 2) using 1/2" x 1-1/4" Bolts (4) and Locknuts (5).
    • Driveline Attachment - GR60 (Figure Asm-0051)
      • 1. Attach the slip clutch end of the driveline to the gearbox input shaft securely. Make certain that the slip clutch is fully o...
    • Driveline Attachment - GR72 (Figure Asm-0044)
      • 1. Remove washer, castle nut, and cotter pin from gearbox shaft. Install clutch yoke on shaft. Attach yoke to clutch by insertin...
      • ASSEMBLY SECTION
      • OPERATION SECTION
  • 1. Standard Equipment and Specifications
    • GR60 GR72
    • 2. OPERATOR REQUIREMENTS
  • 3. TRACTOR REQUIREMENTS
    • Tractor Requirements and Capabilities
    • 3.1 ROPS and Seat Belt
    • 3.2 Tractor Safety Devices
    • 3.3 Tractor Horsepower
    • 3.4 3-Point Hitch
    • 3.5 Front End Weight
    • 3.6 Power Take Off (PTO)
    • 4. GETTING ON AND OFF THE TRACTOR
      • 4.1 Boarding the Tractor
      • 4.2 Dismounting the Tractor
    • 5. STARTING THE TRACTOR
    • 6. CONNECTING THE MOWER TO THE TRACTOR
      • 1. Make sure the tractor is equipped with the correct PTO shaft. Change shafts if needed.
      • 2. Shorten or remove the tractor drawbar to avoid interference when raising and lowering the mower.
      • 3. Board the tractor and start the engine. Position the tractor to the mower with the 3- point lift arms positioned between the ...
      • 4. Turn off the tractor engine and dismount.
      • 5. One lift arm at a time, align arm end hole between the set of A-frame lift lugs. Insert hitch pin through the lug and arm holes and insert retaining pin into hitch pin.
      • 6. Walk around to opposite side and repeat procedure for remaining lift arm and hitch pin.
      • 7. Extend or retract 3-point top link to align its end hole with the holes of the mower’s top link. Insert the top link hitch pin and insert retaining pin into hitch pin.
      • 8. Adjust any lower link check chains, guide blocks, or sway blocks to prevent the mower from swaying side to side and possible contact with tractor rear tires.
    • 7. SETTING THE MOWER
      • 7.1 Setting Mower Height
        • 1. Park the tractor and mower on level ground.
        • 2. Using the 3-point hitch control lever, position the front of the mower with the side skids 1” less off the ground than desire...
        • 3. Shut down the tractor and remove the key.
        • 4. Level the mower deck front to rear by extending or retracting the 3-point top link.
        • 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.
        • 6. Securely block up the mower at this height.
        • 7. Remove the bolts securing the tailwheel beam positioning bracket to the support brackets and allow the tailwheel to rest at g...
        • 8. Extend the tractor’s top 3-point link so that when lifting the mower, the front of the deck will raise 2 to 2º" before the tail wheel leaves the ground. This will allow the mower to follow the contour of uneven terrain.
      • 7.2 Setting Deck Pitch
    • 8. DRIVELINE ATTACHMENT
      • 8.1 Driveline Length Check
      • GR60 Mowers Only
    • 9. PRE-OPERATION INSPECTION AND SERVICE
      • 9.1 Tractor Pre-Operation Inspection/Service
      • 9.2 Mower Pre-Operation Inspection/Service
      • 9.3 Cutting Component Inspection
  • 10. DRIVING THE TRACTOR AND IMPLEMENT
    • 10.1 Starting the Tractor
    • 10.2 Brake and Differential Lock Setting
    • 10.3 Raising the Mower
    • 10.4 Driving the Tractor and Mower
    • 11. OPERATING THE TRACTOR AND IMPLEMENT
      • 11.1 Foreign Debris Hazards
      • 11.2 Bystanders/Passersby Precautions
      • 11.3 Engaging the Power Take Off (PTO)
      • 11.4 PTO RPM and Ground Speed
      • 11.5 Operating the Mower
      • 11.6 Shutting Down the Implement
    • 12. DISCONNECTING THE MOWER FROM THE TRACTOR
    • 13. MOWER STORAGE
    • 14. TRANSPORTING THE TRACTOR AND IMPLEMENT
      • 14.1 Transporting on Public Roadways
      • 14.2 Hauling the Tractor and Implement
  • 15. TROUBLESHOOTING GUIDE
    • Problem Possible Cause Remedy
      • Blade rotation incorrect. Use correct Blade for Carrier.
      • Using Straight Blades Use Fan Blades in grass.
      • Carrier RPM too low. Increase PTO speed.
      • Mower not leveled. Adjust machine level (in very heavy
      • weeds, 1/2” to 1” low in front).
      • Tires mashing down grass. Use offset Adapter to move Mower to
      • the left.
      • Ground speed too fast. Reduce ground speed.
      • Blades locked back. Free blades.
      • Blades riding up due to Blade Replace Blade Bolts.
      • Bolt wear.
      • Blades bent up. Replace Blades.
      • (Left Hand Threads).
      • Worn Blade Bolt. Replace Bolt.
      • Blade Bolt Bushing broken or Replace or reweld Bushing. Weld with
      • loose. E7018 low Hydrogen rods.
      • Blade Carrier bent. Straighten or replace Blade Carrier.
      • Blades on upside down. Turn Blades right side up and tighten.
      • Drivelines not phased. Replace Driveline.
      • Blade broken. Replace Blades in sets.
      • Blade Carrier bent. Repair or replace Carrier.
      • Blade Hub not properly seated Remove Hub, check Key and Shaft,
      • on Shaft. and replace or seat properly.
      • New Blade matched with worn Blade. Replace Blades in sets.
      • speed.
      • Blades too soft. Replace Blades with hardened,
      • high-quality, Rhino Blades from the
      • manufacturer.
      • Bolt hole elongated or oversized. Replace Blade Carrier.
      • Locknut worn out. Replace Locknut.
      • Check joint angles and phasing.
      • Slow down ground speed or raise
      • Mower.
      • Ears have deformed. Install thrust washer.
      • Into Cup and Cross Use Slip Clutch.
      • Check joint angles and phasing.
      • ground speed or raise Mower.
      • Use protective device.
      • (See Clutch Maintenance).
      • (See Clutch Maintenance).
      • Rough gears. Run in or change Gears.
      • Worn Bearing. Replace Bearing.
      • (See Clutch Maintenance).
      • Excessively Mower.
      • Springs weak. Replace Springs.
      • Improper adjustment. Re-adjust Slip Clutch.
      • Too much power for Slip Clutch. Reduce ground speed and material
      • intake.
      • Friction Facings worn. Replace Facings.
      • Oil on Facings. Replace Facings.
      • Friction Facings glazed. Clean with emery cloth.
      • shallow cavity Plug. Cavity in Oil Plug should be
      • approximately 5/8”.
      • Oil level too high. Lower oil level to Plug.
      • No Oil Seal. Install Oil Seal.
      • Oil too light. EP140.
      • Bent Shaft. Replace Oil Seal and Shaft.
      • Oil Seal Race rough. Replace Shaft or repair Race.
      • Oil Seal installed wrong. Replace Seal.
      • Oil Seal not sealing in the housing. Replace Seal or use a sealant on O.D.
      • of Seal.
      • Bearings loose. Adjust Bearings.
      • Vent Plug stopped up. Open Vent Plug.
      • Oil level too high. Drain oil to proper level.
      • Gasket damaged. Replace Gasket.
      • Bolts loose. Tighten Bolts.
      • Rattling or Not Turning Freely Nylon Bearing worn. Replace Nylon Bearing.
    • MAINTENANCE SECTION
    • Lubrication (Figure Mnt-0014)
  • Gearbox Lubrication (Figure Mnt-0001 and Mnt-0011)
    • Tail Wheel Lubrication
  • Driveline Lubrication
  • Blade Servicing
    • Blade Sharpening
    • Blade Removal
    • Blade Carrier Removal
    • Blade Carrier Installation
  • Slip Clutch - GR60
    • Seasonal Slip Clutch Maintenance
      • 1. Loosen nuts (Mnt-0017) on springs until the springs are free, yet remain secure on bolts.
      • 2. Attach cutter to tractor and start the tractor. Set the engine speed at 1200 RPM.
      • 3. Mark outer plates as shown in Mnt-0017.
      • 4. Engage the PTO (approximately one second) and then quickly disengage it. The friction lining plates should break loose (check the mark).
      • 5. Turn tractor off. (1) Tighten the nuts on the coil spring clutch to their original position of 1-9/16" compressed spring length. (2) (Top of washer to pressure plate)
  • Torque Limiter - GR72
    • 1. With the three Capscrews (#1) backed out until the points are below the surface of the circular Adjusting Nut (#2), run Adjusting Nut up finger-tight, or slightly less than finger-tight.
    • 2. Alternately tighten the hardened, cup point Capscrews (#1) no more than one-half turn at a time until the Capscrew heads "Bottom Out". Do not over tighten the Capscrews nor completely flatten the Spring Washers (#3).
    • Seasonal Torque Limiter Maintenance
      • 1. Loosen Bolts (#1) until gap between adjusting nut (#2) and guide ring is approximately 1/16".
      • 2. Attach machine to tractor, set engine at approximately half throttle and quickly engage PTO. This procedure will break Torque Limiter facings loose and allow the proper torque to be maintained.
      • 3. Return the bolts to their original position as described in (b) above.
    • GR60 Gearbox Maintenance
  • Right Angle Gearbox (Outboard) Assembly & Disassembly Procedures
    • Input Shaft Removal
      • 1. Place Gearbox on appropriate work surface.
      • 2. Remove Vent Plug (item #16) or Complete Top Cover (item #18).
      • 3. Turn Gearbox upside down allowing Oil to drain from gearbox into catch pan for proper disposal.
      • 4. Turn Gearbox right side up and drop bottom into a hole for support or lay it on its side laying flat.
      • 5. Remove Bolts (item # 23) from front Bearing Cap (item # 24), this will allow front cover to be removed. It may be required to drive a wedge between front cover and main housing to loosen cover.
      • 6. Remove Input shaft (item #26) and Input Gear (item #27), Input Shaft should pull out with Gear and Bearing Cones (item #12) still on it, Inner Bearing Cone may stay in Housing and Outer Bearing Cone should come off with front Bearing cover.
      • 7. Remove Inner Bearing Cone, Inner Spacer (item # 13), Outer Bearing Cone, Input Gear, Check now for Shims (item # 29,30,31) always note quantity of Shims. Remove outer Spacer (item # 28) from Input Shaft.
      • 8. Remove Input Seal (item # 25), Bearing Cup (item #12) from front Cover and bearing Cup (item#12) from back of Main Housing (Casing) (item # 1).
    • Output Shaft Removal
      • 1. Remove Cotter Pin (item # 11) from Nut (item # 10) and Output Shaft (item # 8) this can be done by reaching through opening in front of Main Housing.
      • 2. Slide Output (Pinion) Gear (item # 9) up off of Output Shaft and out of Main Housing.
      • 3. Output Shaft will come out of Main Housing through the bottom, If Output Seal is still in bottom of the Main Housing use a Soft Metal (Brass or Aluminum) Pin to Drive Shaft down from the top, This will drive Output Seal out at the same time.
      • 4. Reach in from front or top of Main Housing and remove upper Output Shaft Bearing Cone (item # 12).
      • 5. From the Bottom of Main Housing drive out top Bearing Cup (item # 12) and from the top drive out the bottom Bearing Cup (item # 2).
    • Parts Inspection
      • 1. Inspect and Clean all Parts. Check Bearings, Shafts, Gears, Housing and Covers. Shafts should be inspected at Seal wear areas...
        • 1. Install Upper Output Shaft Bearing Cup (item # 12) into Main Housing from the top, Install Output Shaft Lower Bearing Cup (item # 2) into Main Housing (item # 1) from the bottom, Make sure both Bearing Cup are seated firmly against housing.
        • 2. Install Lower Bearing Cone (item #2) down over Output Shaft from top making sure it is completely seated against shoulder on lower part of Output Shaft.
        • 3. Insert Output Shaft (item # 8) into Main Housing from the bottom till Lower Bearing Cone is seated into Lower Bearing Cup, Slide Upper Bearing Cone down over Output Shaft from the till it seats down against and into upper output Shaft Bearing Cup.
        • 4. Slide Output Gear (item # 9) down over Output Shaft till it sits against upper Bearing Cone.
        • 5. Install Output Shaft Bearing Adjusting nut (item # 10) Tighten Nut to set Pre-Load on Output Shaft Bearings. Bearing Preload should be from 12 to 14 inch pounds of Rolling Torque.
        • 6. Using Soft Metal (Brass or Aluminum) Pin, Strike both ends of Shaft with a hammer and recheck the Bearing Pre-Load, This is t...
        • 7. To Install the Output Seal, Put a light coat of Grease on ID of Seal or on OD of shaft where Seal rides. Install the Output Seal using a Seal Driver.
    • Input Shaft Installation
      • 1. Install Inner Bearing Cup (item # 12) into back of main Housing (item # 1). Make sure Cup is seated into Main Housing.
      • 2. Install Outer Bearing Cup (item # 12) into back of Front Bearing Cover (item # 24). Make sure Cup is Seated into front Cover.
      • 3. Install Spacer (item # 13) onto Back side of Input Shaft (item # 26), Install Spacer (item # 28) onto input Shaft (item # 26)...
      • 4. Install Input Gear (item #27) on to Input Shaft from the front, Install Outer Bearing Cone (item # 12) on to input shaft and slide down till it seats against Gear. Install Inner Bearing Cone (item # 12) onto input shaft.
      • 5. Slide Input Shaft with all components down into Main Housing till Inner Bearing Cone is seated into Inner Bearing Cup. Look a...
      • 6. Input Seal (item # 25) can be installed now or wait till later. With Shims (item # 20,21 & 22) lower Input Bearing Cap (item ...
      • 7. Install Top Cover (Item # 18) and Gasket (item # 19), Install Pressure Vent Plug (item # 16) with Sealing Washer (item # 17), Vent Plug must be 5 pounds pressure relief type.
      • 8. Fill Gearbox with Oil, remove Oil Level Plug (item # not shown) on side of Main Housing, Remove the vent Plug (item # 16) and...
    • Storage
      • 1. Thoroughly clean the cutter.
      • 2. Lubricate the cutter as covered in Maintenance Section.
      • 3. Tighten all bolts and pins to the recommended torque.
      • 4. Check the cutter for worn or damaged parts. Make replacements immediately.
      • 5. Store the cutter in a clean, dry place with the cutter housing resting on blocks.
      • 6. Use spray touch-up enamel where necessary to prevent rust and maintain the appearance of the cutter.
    • Proper Torque For Fasteners
      • GR 60/72
      • ROTARY CUTTER
• RHINO
  • LIMITED WARRANTY
    • 1. LIMITED WARRANTIES
    • 1.01. Servis-Rhino warrants for one year from the purchase date to the original non-commercial, governmental, or municipal purch...
    • 1.02. Manufacturer will replace for the Purchaser any part or parts found, upon examination at one of its factories, to be defective under normal use and service due to defects in material or workmanship.
    • 1.03. This limited warranty does not apply to any part of the goods which has been subjected to improper or abnormal use, neglig...
    • 1.04. Except as provided herein, no employee, agent, Dealer, or other person is authorized to give any warranties of any nature on behalf of Manufacturer.
    • 2. REMEDIES AND PROCEDURES.
    • 2.01. This limited warranty is not effective unless the Purchaser returns the Registration and Warranty Form to Manufacturer within 30 days of purchase.
    • 2.02. Purchaser claims must be made in writing to the Authorized Dealer (“Dealer”) from whom Purchaser purchased the goods or an approved Authorized Dealer (“Dealer”) within 30 days after Purchaser learns of the facts on which the claim is based.
    • 2.03. Purchaser is responsible for returning the goods in question to the Dealer.
    • 2.04. If after examining the goods and/or parts in question, Manufacturer finds them to be defective under normal use and service due to defects in material or workmanship, Manufacturer will:
      • (a) Repair or replace the defective goods or part(s) or
      • (b) Reimburse Purchaser for the cost of the part(s) and reasonable labor charges (as determined by Manufacturer) if Purchaser paid for the repair and/or replacement prior to the final determination of applicability of the warranty by Manufacturer.
    • 2.05. Purchaser is responsible for any labor charges exceeding a reasonable amount as determined by Manufacturer and for returni...
    • 3. LIMITATION OF LIABILITY.
    • 3.01. MANUFACTURER DISCLAIMS ANY EXPRESS (EXCEPT AS SET FORTH HEREIN) AND IMPLIED WARRANTIES WITH RESPECT TO THE GOODS INCLUDING, BUT NOT LIMITED TO, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    • 3.02. MANUFACTURER MAKES NO WARRANTY AS TO THE DESIGN, CAPABILITY, CAPACITY, OR SUITABILITY FOR USE OF THE GOODS.
    • 3.03. EXCEPT AS PROVIDED HEREIN, MANUFACTURER SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO PURCHASER OR ANY OTHER PERSON OR ENTI...
    • 3.04. NO ACTION ARISING OUT OF ANY CLAIMED BREACH OF THIS WARRANTY OR TRANSACTIONS UNDER THIS WARRANTY MAY BE BROUGHT MORE THAN TWO (2) YEARS AFTER THE CAUSE OF ACTION HAS OCCURRED.
    • 4. MISCELLANEOUS.
    • 4.01. Proper Venue for any lawsuits arising from or related to this limited warranty shall be only in Guadalupe County, Texas.
    • 4.02. Manufacturer may waive compliance with any of the terms of this limited warranty, but no waiver of any terms shall be deemed to be a waiver of any other term.
    • 4.03. If any provision of this limited warranty shall violate any applicable law and is held to be unenforceable, then the invalidity of such provision shall not invalidate any other provisions herein.
    • 4.04. Applicable law may provide rights and benefits to purchaser in addition to those provided herein.
• TO THE OWNER/OPERATOR/DEALER
  • RHINO®