Document Outline

• EC72
• OPERATOR’S MANUAL
  • RHINO®
• To the Owner/Operator/Dealer
  • ROTARY MOWER
• TABLE OF CONTENTS
• Alamo Group Ag. Division is willing to provide
• one (1) AEM Mower Safety Practices Video
  • General Safety Instructions and Practices
  • Operator Safety Instructions and Practices
  • Equipment Operation Safety Instructions and Practices
  • Connecting or Disconnecting Implement Safety Instructions and Practices
  • Transporting Safety Instructions and Practices
  • Maintenance and Service Safety Instructions and Practices
    • Storage and Parking Safety Instructions and Practices
    • Concluding Safety Instructions and Practices
  • Decal Location
    • SAFETY SECTION
    • 1. D389 1 Decal Sheet Multi Hazard
    • 2. D388 1 Decal Sheet Driveline Hazards
    • 3. D395 1 IMPORTANT Replace Blades in Pairs
    • 4. 00776678 1 DANGER Shear Bolt Length
    • 5. 00760657 1 IMPORTANT Genuine Parts
    • 6. D302 2 LOGO Rhino (4x6)
    • 7. D303 2 LOGO Rhino (4x16)
    • 8. 00785185 2 NAME EC72
    • 9. 2738332 2 REFLECT Red Reflectors
    • 10. nfs 1 SERIAL PLATE Serial Number Plate
    • 11. 00756004 1** DANGER Shield Missing (Not Shown)
    • 12. 00756005 1** DANGER Rotating Driveline (Not Shown)
    • 13. 03200347 * REFLECT SMV
    • 14. 00776031 1 Canister, Operators Manual
    • 15. 00779477C 1 Operator’s Manual
    • 16. 10058000 3 Bolt
    • 17. 00024100 3 Flatwasher
    • 18. 02959924 3 Locknut
    • 19. D454 1 WARNING Crushing Hazard (Decal Under Deck)
    • Decal Description
    • Federal Laws and Regulations
      • INTRODUCTION SECTION
    • DEALER SETUP INSTRUCTIONS
      • 1. Position on flat surface.
      • 2. Apply light oil to gear box input shaft.
    • SHIELD ASSEMBLY
  • 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. Attach the Lift Strap Bars (6) to the A-Frame Bars (1) with one Bolt (10), Top Link (11), Bushing, (12), and Nut (19).
    • 4. Tighten all bolts to the proper torque.
  • 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 on...
    • 2. Insert the Tail Wheel Assembly into the Tail Wheel Beam (1) and retain with Flatwasher (8), and Cotter Pin (8).
    • 3. Tighten all Bolts to the proper torque.
  • SHEAR BOLT or SLIP CLUTCH DRIVELINE INSTALLATION
    • Front Deflectors and Rear Metal Band (Standard Equipment)
      • Front Rubber Fabric Deflectors (Standard Equipment)
  • CHECK CHAINS (Extra Equipment) - FIGURE Asm-R-0279
    • 1. Tractor Top Link
    • 2. Check Chain
    • 3. Chain Lug
    • 4. Hitch Ears
    • 5. Keyhole Bracket
  • OFFSET ADAPTER HITCH (EXTRA EQUIPMENT)
    • ASSEMBLY SECTION
    • OPERATION SECTION
• RHINO EC72 ROTARY MOWER
• OPERATION INSTRUCTIONS
  • 1. Standard Equipment and Specifications
    • EC72
    • 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
      • 6.1 Connecting Mower
        • 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 at the same height and to the outside of the mower hitch pins. Note: Set the 3-point lift control to “Position Control” so that 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.
      • 6.2 Safety Chains
    • 7. SETTING THE MOWER
      • 7.1 Setting Mower Height- Lift Type - (Standard or Quick Hitch)
        • 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 desired cut height. For example, for a 3” cut, position the skids 2” from the ground. Set the 3-point control lever stop a...
        • 3. Shut down the tractor and remove the key.
        • 4. Adjust the mower deck front to rear by extending or retracting the 3-point top link. Always set front of deck 3/4” lower than rear for best performance.
        • 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 in position and allow the tailwheel to rest at ground level. Align tailwheel beam between nearest sets of holes in beam support brackets and reinstall support bolts on each side of beam. Tighten all bol...
        • 8. Extend the tractor’s top 3-point link so that when lifting the mower, the front of the deck will raise 2 to 2½" before the tail wheel leaves the ground. This will allow the mower to follow the contour of uneven terrain.
      • 7.2 Setting Deck Pitch
    • DRIVELINE ATTACHMENT
      • 7.3 Driveline Length Check
    • 8. PRE-OPERATION INSPECTION AND SERVICE
      • 8.1 Tractor Pre-Operation Inspection/Service
      • 8.2 Mower Pre-Operation Inspection/Service
      • 8.3 Cutting Component Inspection
      • 8.4 Blade Bolt Inspection
  • 9. DRIVING THE TRACTOR AND IMPLEMENT
    • 9.1 Starting the Tractor
    • 9.2 Brake and Differential Lock Setting
    • 9.3 Raising the Mower
    • 9.4 Driving the Tractor and Mower
    • 9.5 Crossing Ditches and Steep Inclines
    • 10. OPERATING THE TRACTOR AND IMPLEMENT
      • 10.1 Foreign Debris Hazards
      • 10.2 Bystanders/Passersby Precautions
      • 10.3 Engaging the Power Take Off (PTO)
      • 10.4 PTO RPM and Ground Speed
      • 10.5 Operating the Mower
      • 10.6 Shutting Down the Implement
    • 11. DISCONNECTING THE MOWER FROM THE TRACTOR
    • 12. MOWER STORAGE
    • 13. TRANSPORTING THE TRACTOR AND IMPLEMENT
      • 13.1 Transporting on Public Roadways
      • 13.2 Hauling the Tractor and Implement
  • 14. TROUBLESHOOTING GUIDE
    • Problem Possible Cause Remedy
      • Check for loose nuts on TIghten if loose.
      • blade holder and blades.
      • Check for bent output shaft. Replace shaft if bent.
      • If shaft is bent, oil will
      • normally leak from bottom
      • seal.
      • Check to see if blades are Free blades so they swing.
      • free swinging.
      • Check for even wear on Weigh Blades. Weight should be within
      • each blade tip. Were both 1 oz. Always replace both blades.
      • blades changed at the same
      • time?
      • Blade Broken. Replace blades, in set.
      • Blade Carrier Bent. Replace carrier.
      • Blade hub not properly Remove hub, check tapered spline
      • seated on shaft. clean and replace.
      • New blade or bolts matched Replace blades or bolts in sets.
      • with worn blade or bolts.
      • Drivelines not phased correctly. Replace driveline.
      • Implement & tractor yokes must
      • be in line.
      • Carrier RPM too low. Use correct PTO speed and check for
      • correct gearbox ratio.
      • Cutter not level. See Cutting Height Adjustment.
      • Tractor tires mashing down grass. Reverse direction of cutting and drive
      • with right tractor tire out of cutter
      • overlap area. Conditions too wet to cut
      • Ground speed too fast. Reduce ground speed by shifting to a
      • lower gear.
      • Blades locked back. Free blades.
      • Blades riding up due to blade bolt Replace blade bolts.
      • wear or loose bolts.
      • Cutting height too high. Lower cut height as much as possible.
    • Blade Bolts Working Loose Bolts not tightened. Tighten Bolts to 300 ft./lbs.
      • Bolt hole elongated or oversized. Replace Blade Carrier.
      • Locknut worn out. Replace Locknut.
      • Rough gears. Run in or change Gears.
      • Worn Bearing. Replace Bearing.
      • 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.
      • Oil level too high. Drain oil to proper level.
      • Gasket damaged. Replace Gasket.
      • Bolts loose. Tighten Bolts.
      • Sand hole in casting. Replace castings or gearbox.
      • Blades unable to cut that part of ground speed of tractor but keep
      • grass pressed down by path of engine running at full PTO wpm.
      • tractor tires. Lowering the cutting height may help.
      • Dull blades. Sharpen or replace blades.
      • Height of cutter lower at rear or See Cutting Height Instructions.
      • front.
      • Improper type lubricant. Replace with proper lubricant.
      • Excessive trash build-up around Remove trash.
      • gearbox.
      • Bearing or gears set up improperly. Consult your Dealer.
      • Excessively 540 RPM.
      • Heavy Material. Reduce ground speed. Raise cutting
      • height.
      • Not using proper pin. Replace only with recommended shear
      • pin.
      • PTO engaged at high engine RPM Idle engine to engage PTO
      • Cutting in rocky conditions Increase cutting height.
      • Blade carrier RPM too high. Check gearbox ratios.
      • Blades not properly heat treated. Consult your Dealer.
      • MAINTENANCE SECTION
    • Lubrication
      • 1 U-Joints 8 hours
      • 2 Gearbox 8 hours
      • 3 Wheel Hub Weekly
      • 4 Telescoping 8 hours
      • 5 Tailwheel Beam 8 hours
      • 6 Shield Bearings 40 hours
      • 7 Twist Collar Yoke Weekly
      • 8 Shear Pin Yoke As Needed
    • GEARBOX
  • DRIVELINE LUBRICATION
    • BLADE SERVICING
    • BLADE SHARPENING
    • BLADE CARRIER REMOVAL/INSTALLATION
    • BLADE CARRIER REMOVAL
    • BLADE CARRIER INSTALLATION
    • BLADE REMOVAL
  • MOWER 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.
    • TORQUE CHART
  • GEARBOX SERVICING
    • 1. Slide Hammer Puller
    • 2. Locktite #5900
    • 3. Punch - Long Drift
    • 4. Needle Nose Pliers
    • 5. Screw Driver
    • 6. External Snap Ring Pliers
    • 7. Socket Wrench
    • 8. 9/16 Socket
    • 9. Ball Pin Hammer
    • 10. Pry Bar
    • 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. Remove 4 bolts (18), break gasket (11 & 12) loose, and then remove the bearing retainer cap (2).
      • 4. Output shaft assembly must be removed from main housing by driving or pulling shaft out bottom end.
      • 5. The gearbox is now disassembled into four (4) sub-assemblies:
        • 1. Input shaft assembly
        • 2. Output shaft assembly
        • 3. Lower bearing retainer assembly
        • 4. Main housing assembly
          • 1. Seal Output Shaft
          • 2. Cap, Bearing Retainer (Output)
          • 3. Gasket, Output, Cap
          • 4. Bearing, Ball
          • 5. Shaft, (Output Pinion)
          • 6. Spacer, Bearing, (Output)
          • 7. Snap Ring
          • 8. Bearing, (Input Rear)
          • 9. Shaft, (Input)
          • 10. Gear, (Input)
          • 11. Snap Ring
          • 12. Shim, Side Housing
          • 13. Housing, Side or Input
          • 14. Seal, Input
          • 15. Housing, main
          • 16. Bolt, (3/8” x 1”)
          • 17. Lockwasher (3/8”)
          • 18. Bolt, (3/8” x 1-1/4)
          • 19. Plug, Pipe
          • 20. Plug, Pipe (1/8” Oil Level)
  • 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. Remove retaining ring (Ref. #7) closest to bearing. Tap end of shaft as explained in Step 1 until bearing and gear drop off shaft.
    • 3. Worn components can now be replaced and assembled in reverse order.
      • 1. Install gear onto shaft as shown in Figure Mnt-R-0212. Note location of two snap ring grooves.
      • 2. Install bearing on shaft.
      • 3. Press oil seal flush with front side of bearing housing (See SEAL INSTALLATION RECOMMENDATION).
      • 4. Lubricate ID of seal and insert shaft until bearing contacts housing. Press bearing into housing by hitting end of shaft.
        • 1. Check Seal - for damage that may have occurred prior to installation. A sealing lip that is turned back, cut or otherwise damaged should be replaced.
        • 2. Check Bore - to see that leading edge is deburred. A rounded corner or chamber should be provided.
        • 3. Check Shaft - remove surface nicks, burrs and grooves and lubricate with a hard, fibrous grease. NOTE: Wrap plastic tape around irregular shaft surfaces such as splines to protect seal during assembly.
        • 4. Use Correct Installation Tool - Always use a pipe or tube with approximate same OD as seal and press seal by striking tube.
          • 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.
            • 1. Assembly of output shaft is accomplished in exact reverse order. Install bearing onto shaft and press against gear. Install retaining ring (Ref. #28 Figure Mnt-R-0211).
            • 2. Install spacer and lower bearing on shaft.
            • 1. Remove old seal from cap and press in new seal. (See SEAL INSTALLATION RECOMMENDATIONS).
  • GEARBOX INPUT SHAFT REAR BEARING
    • 1. Insert output shaft assembly into main housing and press into place. NOTE: Use pipe or tube with approximate same OD. as bearing cup and press into place by striking or pressing on tube.
    • 2. Prelube lower bearing.
    • 3. Place lower gasket in place and then carefully slide bearing retainer cap assembly down shaft.
    • 4. Install bolts and lockwashers and torque to 40-50 ft. lbs.
      • 1. Assemble three shims onto input shaft housing. Insert input shaft assembly into main housing by installing shaft end into bearing in main housing. It may be necessary to rotate shaft to align gear teeth so that housing will install completely. Not...
      • 2. Install washers and bolts and torque to 40-50 ft. lbs.
      • 3. Gear backlash check procedure (Figure Mnt-R-0044). Install 1/2 x 3 capscrew through shear pin hole. Install flat washers to take up 1/2” space and then install nut and tighten so bolt cannot move. Clamp gearbox to something solid so it will not ...
• TO THE OWNER/OPERATOR/DEALER
  • EC72
  • ROTARY MOWER
• SERVIS-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 purchaser (“Purchaser”) and warrants for six months to the original commercial or industrial purchaser (“Purchaser”) th...
    • 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, negligence, alteration, modification, or accident, damaged due to lack of maintenance or use of wrong fuel, oil, or lubricants, ...
    • 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 returning the goods to the Dealer, whether or not the claim is approved. Purchaser is responsible for the transportation cost for...
    • 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 ENTITY WITH RESPECT TO ANY LIABILITY, LOSS, OR DAMAGE CAUSED OR ALLEGED TO BE CAUSED DIRECTLY OR INDIRECTLY BY THE GOODS INCLU...
    • 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.
      • RHINO®