User ManualTable of ContentsGR601GR721OPERATOR’S MANUAL1RHINO®1To the Owner/Operator/Dealer2HEAVY-DUTY ROTARY CUTTER1Alamo Group Ag. Division is willing to provide4one (1) AEM Mower Safety Practices Video4TABLE OF CONTENTS5Safety Messages8Decal Location18SAFETY SECTION71. 00725746 1 PELIGRO Get Manual Translated192. 00773723 1 PELIGRO Rotating Driveline Translation193. 00749117 1 DANGER Multi-Hazard194. 00756004 1 DANGER D/L Shield missing195. 00756005 1 DANGER Rotating Driveline196. 00756494 1 DANGER Driveline Hazards197. 00769737 1 DANGER Blades/Thrown Objects198. 00769736 1 WARNING Use/Repair Shields & Guards199. 00760657 1 IMPORTANT Genuine Parts, Rotary1910. 00763613 1 INSTRUCT Slip Clutch Adjustment1911. 00763977 1 INSTRUCT Notice to Owner1912. D103 1 INSTRUCT 540 RPM Operation1913. 03200347 * REFLECT SMV Emblem1914. D302 2 LOGO Rhino (4-7/8 x 6-1/2)1915. D303 2 L. NAME Rhino (4-3/8 x 16-3/4)1916. D318 2 NAME GR6019D316 2 NAME GR721917. 00771283 1 WARRANTY 5 YR. (GR72 only)1918. nfs 1 SER. PLT. GR60, GR721919. 2738332 2 REFLECT Red Reflector1920. 00776481 1 INSTRUCT Operators Manual Inside1921. 00776031 1 Canister, Operators Manual1922. 00775743C 1 Operators Manual1923. 10058000 3 Bolt1924. 00024100 6 Flatwasher1925. 02959924 3 Locknut19Decal Description20Federal Laws and Regulations25Attention Owner/Operator74INTRODUCTION SECTION71A-Frame Assembly (Figure Asm-00049)761. 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-0049.762. Place the Flexible Hitch Top Link (3) and inner Bushing (4) between the right and left upright braces. Position the A-frames ...763. Align the free end of the Long Braces (2) to the respective sides of the mower deck support lugs as illustrated. Align holes ...764. Insert hitch pins for CAT I and II (12) into the top front holes of lift Lugs and retain using Lynch Pins (13).76Tailwheel Assembly771. To attach the tailwheel assembly (2) to the tailwheel beam (1), place a 1-1/2” flat washer (16) on the tailwheel assembly sha...772. 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...773. Place tailwheel positioning bracket (5) onto tailwheel beam with bracket holes to the bottom. Side the bracket to opposite end of beam.774. Place bushing (6) into tailwheel beam (1) end holes. Position tailwheel beam end between set of upright lugs behind mower gea...775. Pull tailwheel positioning bracket (5) against support brackets (3 and 4) and align holes of positioning bracket and support ...77NOTE: 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.776. Tighten all bolts, lockwashers, and nuts to their recommended torque77Check Chains (Extra Equipment) for Lift-Models (Figure Asm-0011)78Offset Adapter Hitch - Extra Equipment (Figure Asm-0010)781. Fasten the Offset Adapter Hitch Weldment to the lift lugs using the Hitch Pin holes. Fasten the Adjustable Leg to the left si...782. 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.783. Attach the Cutter to the tractor. Install stabilizer bars or adjust sway chains to prevent side sway of the Cutter.784. 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.79Front Deflectors (Standard Equipment) and Chain Guards(Optional Equipment at Extra Cost)791. Attach the Front Bracket (1) to the front of the mower with 1/2" x 3" Bolts (3), Flatwashers (9) and Locknuts (4).792. Attach the Front Deflector (2) to the Bracket with 3/8" x 1-1/2" Bolts (5), Woodwashers (8), Flatwashers (6), and Locknuts (7).791. Attach the corner plate (1) to the side of the deck with a 1/2" x 1-1/4" Bolt (2), and Locknut (2).801. 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.802. Secure Debris Deflector (3) to Deflector (1 & 2) using 1/2" x 1-1/4" Bolts (5), Bar (4), Flatwashers (7), and Locknuts (8).803. Fasten Rear Plate (9) on both ends of Deflector (1 & 2) using 1/2" x 1-1/4" Bolts (5) and Locknuts (6).80Front Chainguards (Optional Equipment)811. Attach Chainguard Plate (1) to deck using 5/8" x 3-1/2" Bolts (4), Washers (5), and Locknut (6).812. 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.)811. 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.812. Secure Chainguard Assembly (3) to Deflectors (1 & 2) using 1/2" x 1-1/4" Bolts (4), Flatwashers (6), and Locknuts (5).813. Fasten Rear Plate (8) on both ends of Deflectors (1 & 2) using 1/2" x 1-1/4" Bolts (4) and Locknuts (5).81Driveline Attachment - GR60 (Figure Asm-0051)821. Attach the slip clutch end of the driveline to the gearbox input shaft securely. Make certain that the slip clutch is fully o...82Driveline Attachment - GR72 (Figure Asm-0044)821. Remove washer, castle nut, and cotter pin from gearbox shaft. Install clutch yoke on shaft. Attach yoke to clutch by insertin...82ASSEMBLY SECTION75OPERATION SECTION831. Standard Equipment and Specifications85GR60 GR72852. OPERATOR REQUIREMENTS863. TRACTOR REQUIREMENTS87Tractor Requirements and Capabilities873.1 ROPS and Seat Belt873.2 Tractor Safety Devices873.3 Tractor Horsepower883.4 3-Point Hitch883.5 Front End Weight883.6 Power Take Off (PTO)894. GETTING ON AND OFF THE TRACTOR894.1 Boarding the Tractor904.2 Dismounting the Tractor905. STARTING THE TRACTOR916. CONNECTING THE MOWER TO THE TRACTOR911. Make sure the tractor is equipped with the correct PTO shaft. Change shafts if needed.922. Shorten or remove the tractor drawbar to avoid interference when raising and lowering the mower.923. Board the tractor and start the engine. Position the tractor to the mower with the 3- point lift arms positioned between the ...924. Turn off the tractor engine and dismount.925. 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.926. Walk around to opposite side and repeat procedure for remaining lift arm and hitch pin.927. 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.928. 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.927. SETTING THE MOWER927.1 Setting Mower Height931. Park the tractor and mower on level ground.932. Using the 3-point hitch control lever, position the front of the mower with the side skids 1” less off the ground than desire...933. Shut down the tractor and remove the key.934. Level the mower deck front to rear by extending or retracting the 3-point top link.935. 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.936. Securely block up the mower at this height.937. Remove the bolts securing the tailwheel beam positioning bracket to the support brackets and allow the tailwheel to rest at g...938. 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.937.2 Setting Deck Pitch948. DRIVELINE ATTACHMENT948.1 Driveline Length Check95GR60 Mowers Only969. PRE-OPERATION INSPECTION AND SERVICE979.1 Tractor Pre-Operation Inspection/Service989.2 Mower Pre-Operation Inspection/Service989.3 Cutting Component Inspection10110. DRIVING THE TRACTOR AND IMPLEMENT10510.1 Starting the Tractor10610.2 Brake and Differential Lock Setting10610.3 Raising the Mower10710.4 Driving the Tractor and Mower10711. OPERATING THE TRACTOR AND IMPLEMENT10911.1 Foreign Debris Hazards11011.2 Bystanders/Passersby Precautions11011.3 Engaging the Power Take Off (PTO)11111.4 PTO RPM and Ground Speed11211.5 Operating the Mower11211.6 Shutting Down the Implement11512. DISCONNECTING THE MOWER FROM THE TRACTOR11513. MOWER STORAGE11714. TRANSPORTING THE TRACTOR AND IMPLEMENT11714.1 Transporting on Public Roadways11914.2 Hauling the Tractor and Implement12015. TROUBLESHOOTING GUIDE122Problem Possible Cause Remedy122Blade rotation incorrect. Use correct Blade for Carrier.122Using Straight Blades Use Fan Blades in grass.122Carrier RPM too low. Increase PTO speed.122Mower not leveled. Adjust machine level (in very heavy122weeds, 1/2” to 1” low in front).122Tires mashing down grass. Use offset Adapter to move Mower to122the left.122Ground speed too fast. Reduce ground speed.122Blades locked back. Free blades.122Blades riding up due to Blade Replace Blade Bolts.122Bolt wear.122Blades bent up. Replace Blades.122(Left Hand Threads).122Worn Blade Bolt. Replace Bolt.122Blade Bolt Bushing broken or Replace or reweld Bushing. Weld with122loose. E7018 low Hydrogen rods.122Blade Carrier bent. Straighten or replace Blade Carrier.122Blades on upside down. Turn Blades right side up and tighten.122Drivelines not phased. Replace Driveline.122Blade broken. Replace Blades in sets.122Blade Carrier bent. Repair or replace Carrier.122Blade Hub not properly seated Remove Hub, check Key and Shaft,122on Shaft. and replace or seat properly.122New Blade matched with worn Blade. Replace Blades in sets.122speed.122Blades too soft. Replace Blades with hardened,123high-quality, Rhino Blades from the123manufacturer.123Bolt hole elongated or oversized. Replace Blade Carrier.123Locknut worn out. Replace Locknut.123Check joint angles and phasing.123Slow down ground speed or raise123Mower.123Ears have deformed. Install thrust washer.123Into Cup and Cross Use Slip Clutch.123Check joint angles and phasing.123ground speed or raise Mower.123Use protective device.123(See Clutch Maintenance).123(See Clutch Maintenance).123Rough gears. Run in or change Gears.123Worn Bearing. Replace Bearing.123(See Clutch Maintenance).124Excessively Mower.124Springs weak. Replace Springs.124Improper adjustment. Re-adjust Slip Clutch.124Too much power for Slip Clutch. Reduce ground speed and material124intake.124Friction Facings worn. Replace Facings.124Oil on Facings. Replace Facings.124Friction Facings glazed. Clean with emery cloth.124shallow cavity Plug. Cavity in Oil Plug should be124approximately 5/8”.124Oil level too high. Lower oil level to Plug.124No Oil Seal. Install Oil Seal.124Oil too light. EP140.124Bent Shaft. Replace Oil Seal and Shaft.124Oil Seal Race rough. Replace Shaft or repair Race.124Oil Seal installed wrong. Replace Seal.124Oil Seal not sealing in the housing. Replace Seal or use a sealant on O.D.124of Seal.124Bearings loose. Adjust Bearings.124Vent Plug stopped up. Open Vent Plug.124Oil level too high. Drain oil to proper level.124Gasket damaged. Replace Gasket.124Bolts loose. Tighten Bolts.124Rattling or Not Turning Freely Nylon Bearing worn. Replace Nylon Bearing.124MAINTENANCE SECTION125Lubrication (Figure Mnt-0014)126Gearbox Lubrication (Figure Mnt-0001 and Mnt-0011)127Tail Wheel Lubrication127Driveline Lubrication128Blade Servicing129Blade Sharpening129Blade Removal130Blade Carrier Removal130Blade Carrier Installation130Slip Clutch - GR60131Seasonal Slip Clutch Maintenance1311. Loosen nuts (Mnt-0017) on springs until the springs are free, yet remain secure on bolts.1312. Attach cutter to tractor and start the tractor. Set the engine speed at 1200 RPM.1313. Mark outer plates as shown in Mnt-0017.1314. Engage the PTO (approximately one second) and then quickly disengage it. The friction lining plates should break loose (check the mark).1315. 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)131Torque Limiter - GR721321. 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.1322. 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).132Seasonal Torque Limiter Maintenance1321. Loosen Bolts (#1) until gap between adjusting nut (#2) and guide ring is approximately 1/16".1322. 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.1323. Return the bolts to their original position as described in (b) above.132GR60 Gearbox Maintenance133Right Angle Gearbox (Outboard) Assembly & Disassembly Procedures134Input Shaft Removal1341. Place Gearbox on appropriate work surface.1342. Remove Vent Plug (item #16) or Complete Top Cover (item #18).1343. Turn Gearbox upside down allowing Oil to drain from gearbox into catch pan for proper disposal.1344. Turn Gearbox right side up and drop bottom into a hole for support or lay it on its side laying flat.1345. 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.1346. 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.1347. 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.1348. 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).134Output Shaft Removal1341. 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.1342. Slide Output (Pinion) Gear (item # 9) up off of Output Shaft and out of Main Housing.1343. 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.1344. Reach in from front or top of Main Housing and remove upper Output Shaft Bearing Cone (item # 12).1345. 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).134Parts Inspection1341. Inspect and Clean all Parts. Check Bearings, Shafts, Gears, Housing and Covers. Shafts should be inspected at Seal wear areas...1341. 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.1352. 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.1353. 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.1354. Slide Output Gear (item # 9) down over Output Shaft till it sits against upper Bearing Cone.1355. 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.1356. Using Soft Metal (Brass or Aluminum) Pin, Strike both ends of Shaft with a hammer and recheck the Bearing Pre-Load, This is t...1357. 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.135Input Shaft Installation1351. Install Inner Bearing Cup (item # 12) into back of main Housing (item # 1). Make sure Cup is seated into Main Housing.1352. Install Outer Bearing Cup (item # 12) into back of Front Bearing Cover (item # 24). Make sure Cup is Seated into front Cover.1353. Install Spacer (item # 13) onto Back side of Input Shaft (item # 26), Install Spacer (item # 28) onto input Shaft (item # 26)...1354. 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.1355. Slide Input Shaft with all components down into Main Housing till Inner Bearing Cone is seated into Inner Bearing Cup. Look a...1356. Input Seal (item # 25) can be installed now or wait till later. With Shims (item # 20,21 & 22) lower Input Bearing Cap (item ...1357. 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.1358. Fill Gearbox with Oil, remove Oil Level Plug (item # not shown) on side of Main Housing, Remove the vent Plug (item # 16) and...135Storage1361. Thoroughly clean the cutter.1362. Lubricate the cutter as covered in Maintenance Section.1363. Tighten all bolts and pins to the recommended torque.1364. Check the cutter for worn or damaged parts. Make replacements immediately.1365. Store the cutter in a clean, dry place with the cutter housing resting on blocks.1366. Use spray touch-up enamel where necessary to prevent rust and maintain the appearance of the cutter.136Proper Torque For Fasteners136GR 60/72140ROTARY CUTTER140RHINO138LIMITED WARRANTY1381. LIMITED WARRANTIES1381.01. Servis-Rhino warrants for one year from the purchase date to the original non-commercial, governmental, or municipal purch...1381.02. 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.1381.03. This limited warranty does not apply to any part of the goods which has been subjected to improper or abnormal use, neglig...1381.04. Except as provided herein, no employee, agent, Dealer, or other person is authorized to give any warranties of any nature on behalf of Manufacturer.1382. REMEDIES AND PROCEDURES.1382.01. This limited warranty is not effective unless the Purchaser returns the Registration and Warranty Form to Manufacturer within 30 days of purchase.1382.02. 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.1382.03. Purchaser is responsible for returning the goods in question to the Dealer.1382.04. 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:138(a) Repair or replace the defective goods or part(s) or138(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.1382.05. Purchaser is responsible for any labor charges exceeding a reasonable amount as determined by Manufacturer and for returni...1383. LIMITATION OF LIABILITY.1383.01. 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.1383.02. MANUFACTURER MAKES NO WARRANTY AS TO THE DESIGN, CAPABILITY, CAPACITY, OR SUITABILITY FOR USE OF THE GOODS.1383.03. EXCEPT AS PROVIDED HEREIN, MANUFACTURER SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO PURCHASER OR ANY OTHER PERSON OR ENTI...1383.04. 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.1384. MISCELLANEOUS.1384.01. Proper Venue for any lawsuits arising from or related to this limited warranty shall be only in Guadalupe County, Texas.1384.02. 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.1384.03. 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.1384.04. Applicable law may provide rights and benefits to purchaser in addition to those provided herein.138TO THE OWNER/OPERATOR/DEALER139RHINO®138Size: 11.9 MBPages: 146Language: EnglishOpen manual