Alamo Industrial A20IV Operator's Manual

Flex-wing mechanical level lift rotary cutter / shredder

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Published 10/03

OPERATOR'S MANUAL

This Operator's Manual is an integral part of the safe operation

of this machine and must be maintained with the unit at all

times. READ, UNDERSTAND, and FOLLOW the Safety and

Operation Instructions contained in this manual before

operating the equipment.

ALAMO INDUSTRIAL

1502 E. Walnut

Seguin, Texas 78155

830-372-3551

A20IV/ A14-IV

FLEX-WING MECHANICAL LEVEL

LIFT ROTARY CUTTER / SHREDDER

Effective Serial No. AG20-01440 Through Current

Part No.00766780C

$0.00

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Summary of Contents for Alamo Industrial A20IV

Page 1 A20IV/ A14-IV FLEX-WING MECHANICAL LEVEL LIFT ROTARY CUTTER / SHREDDER Published 10/03 Effective Serial No. AG20-01440 Through Current Part No.00766780C OPERATOR'S MANUAL This Operator's Manual is an integral part of the safe operation of this machine and must be maintained with the unit at all times.
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 Mower! Safety Training Makes the Difference In order to reduce accidents and enhance the safe operation of mowers, Alamo Industrial, in cooperation with other industry manufacturers has developed the AEM/FEMA Industrial and Agricultural Mower Safety Practices video and guide book.
Page 4 Alamo Industrial 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...
Page 5 TABLE OF CONTENTS SAFETY SECTION ............................1-1 Safety Information ..........................1-2 Fedral Laws & Regulations ....................1-18 Safety Decal Location ........................... 1-12 Safety Decal Description ........................1-14 INTRODUCTION SECTION ......................... 2-1 ASSEMBLY SECTION ..........................3-1 Blade Carrier and Blades ........................3-2 Tongue ..............................
Page 7 SAFETY SECTION Safety Section 1-1...
Page 8 Serious injury or death may occur unless care is taken to follow the warnings and instructions stated in the Safety Messages. Always use good common sense to avoid hazards. (SG-2) A20IV/A14IV 10/03 Safety Section 1-2 © 2004 Alamo Group Inc.
Page 9 Never dismount a Tractor that is moving or while the engine is running. Operate the Tractor controls from the tractor seat only. (SG-9) A20IV/A14IV 10/03 Safety Section 1-3 © 2004 Alamo Group Inc.
Page 10 Note: Hearing loss from loud noise [from tractors, chain saws, radios, and other such sources close to the ear] is cumulative over a lifetime without hope of natural recovery. (SG-I7) A20IV/A14IV 10/03 Safety Section 1-4 © 2004 Alamo Group Inc.
Page 11 (SG-22) DANGER! Never run the tractor engine in a closed building or without adequate ventilation. The exhaust fumes can be hazardous to your health. (SG-23) A20IV/A14IV 10/03 Safety Section 1-5 © 2004 Alamo Group Inc.
Page 12 Do not operate this machine with anyone in the immediate area. Stop mowing if anyone is within 100 yards of mower. (SGM-2) A20IV/A14IV 10/03 Safety Section 1-6 © 2004 Alamo Group Inc.
Page 13 (SGM-8) WARNING! Do not put hands or feet under mower decks. Blade Contact can result serious injury or even death. (SGM-9) A20IV/A14IV 10/03 Safety Section 1-7 © 2004 Alamo Group Inc.
Page 14 A- Frame. Lower the implement carefully to the ground. Do not put hands or feet under lifted components. (S3PT-1) A20IV/A14IV 10/03 Safety Section 1-8 © 2004 Alamo Group Inc.
Page 15 Implement could cause the Implement to overturn the Tractor and vice versa resulting in serious injury or even death. Never fold wings on a hillside...the Implement may overturn. (STI-2) A20IV/A14IV 10/03 Safety Section 1-9 © 2004 Alamo Group Inc.
Page 16 Rhino specifications. Non-genuine "will fit" parts do not consistently meet these specifications. The use of “will fit” parts may reduce mower performance, void mower warranties, and present a safety hazard. Use genuine Servis-Rhino mower parts for economy and safety. (SPRM-1) SEE YOUR SERVIS-RHINO DEALER A20IV/A14IV 10/03 Safety Section 1-10 © 2004 Alamo Group Inc.
Page 18 SAFETY NOTE: Alamo Industrial supplies safety decals on this product to promote safe operation. Damage to the decals may occur while in shipping, use, or reconditioning. Alamo Industrial 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 19 00024100 --------------- Flatwasher 02959924 --------------- Locknut * Furnished by Tractor Manufacturer ( ) For Two-Section unit only (( )) Installed by Driveline Manufacturer [ ] Use one or the other A20IV/A14IV 10/03 Safety Section 1-13 © 2004 Alamo Group Inc.
Page 20 14 - - 99203 RED REFLECTOR 15 - - 99204 YELLOW REFLECTOR 24 -- SERIAL PLATE 7-- 00769737 17- - 00763977 12- - D114 9- - 02925100 16--00763613 12- - D103 1- - 00725746 A20IV/A14IV 10/03 Safety Section 1-14 © 2004 Alamo Group Inc.
Page 21 SAFETY 5- - 00769736 19- - D137 20- - D138 8- - 00756494 6- - 00756059 9A- -00773723 A20IV/A14IV 10/03 Safety Section 1-15 © 2004 Alamo Group Inc.
Page 22 SAFETY 4- - 00756005 2- - 00753840 11- - 999403 22 - - 00757139 3- - 00756004 A20IV/A14IV 10/03 Safety Section 1-16 © 2004 Alamo Group Inc.
Page 23 SAFETY A20-IV A14-IV 23-- 00769813 23-- 02960766 18- - D102 21- - 002960766 AIRPLANE TIRE -- 00762608 26--00776481 25 -- 00771285 A20IV/A14IV 10/03 Safety Section 1-17 © 2004 Alamo Group Inc.
Page 24 Some regulations specify that no one under the age of 16 may operate power machinery. It is your responsibility to know what these regulations are in your own area or situation. (Refer to U.S. Dept. of Labor, Employment Standard Administration, Wage & Home Division, Child Labor Bulletin #102.) A20IV/A14IV 10/03 Safety Section 1-18 © 2004 Alamo Group Inc.
Page 69 INTRODUCTION SECTION Introduction Section 2-1...
Page 70 Your A20IV has been assembled for operation with a specific tractor PTO input speed, either 540 or 1000 RPM. Should you desire to change PTO input speed, contact your local Service Rhino dealer who will assist you in performing the necessary modifications.
Page 71 ASSEMBLY SECTION Assembly Section...
Page 72 Center Section and on the Left Wing Blade Carrier. See FIGURE 1. (Clockwise on Right Wing) Blade Carrier Right Wing Shown NOTE: Cutting Edge for Clockwise Rotation FIGURE 1 A20IV/A14IV 10/03 Assembly Section 3-2 © 2004 Alamo Group Inc.
Page 73 Carefully tap each control rod, and loosen or tighten the adjusting nuts as necessary until the tones from each control rod sound the same. FIGURE 3. Short Level Rod Attachment To Axle A20IV/A14IV 10/03 Assembly Section 3-3 © 2004 Alamo Group Inc.
Page 74 Bracket Mounting on the right side of the tongue mount (2) with Bolt (3), Washer (4) and Nut (5). The Rear Hose Bracket (6) mounts to the Lower Center Axle Spring Mount (7) with Bolt and Locknut (8) FIGURE 5. FIGURE 5. Hose Bracket mounting A20IV/A14IV 10/03 Assembly Section 3-4 © 2004 Alamo Group Inc.
Page 75 3. Turn the Pin to align to the bolt hole as necessary and attach with nut and bolt 4. Note the lube points on the Hinge pins and lubricate as per the Maintenance Section. A20IV/A14IV 10/03 Assembly Section 3-5 © 2004 Alamo Group Inc.
Page 76 Install the clevis rod end (1) of the 8" stroke Hydraulic Cylinder to the lug on the Center Axle (2). The clevis base fastens between the flats on Spring Assembly (3) on the Center Section. FIGURE 8. FIGURE 8. Center Axle Hydraulic Cylinder Attachment A20IV/A14IV 10/03 Assembly Section 3-6 © 2004 Alamo Group Inc.
Page 77 When removing Airplane Tires or Rib Implement Tires, let all of the air out of the tire before removing lug nuts or wheel bolts. Do not exceed 20 M.P.H. on Airplane or Rib Implement Tires. Decal for Airplane tire. A20IV/A14IV 10/03 Assembly Section 3-7 © 2004 Alamo Group Inc.
Page 79 The Spring Stop is assembled to the stop bracket (1) with the 1/2" x 5 1/2" capscrew (2) inserted thru the stop (3) , spring (4) and locknut (5). FIGURE 11. FIGURE 11. Spring Stop Attachment A20IV/A14IV 10/03 Assembly Section 3-9 © 2004 Alamo Group Inc.
Page 80 1/2" x 1” Bolts (3), Locknuts (2), and Washer (4) see the detail in FIGURE 16. FIGURE 16. Rear Center Section FIGURE 15. Rear Wing Section Deflector Attachment Deflector attachment A20IV/A14IV 10/03 Assembly Section 3-10 © 2004 Alamo Group Inc.
Page 81 Bolt (4), Nut (5) and Washer (6). Attach the Chainguard (3) to the Counter Weight with Flatwasher (6), Lockwasher (7) and Nut (8). FIGURE 19 FIGURE 19. Counterweight Chainguard Attachment Fill With Concrete FIGURE 18. Counter Weight A20IV/A14IV 10/03 Assembly Section 3-11 © 2004 Alamo Group Inc.
Page 82 If the cone cannot be easily removed by hand, drive it out from the other side using a hammer and punch. NOTE: The clamping cone is serviced only as a complete assembly. Do not attempt to disassemble the clamping cone. Clamping Cone A20IV/A14IV 10/03 Assembly Section 3-12 © 2004 Alamo Group Inc.
Page 83 After final adjustment attach Canopy Shields over Divider Gearbox (FIGURE 22) , Secondary Gearbox (FIGURE 21). CAUTION Install all Canopy Shields over Torque Limiters and Drivelines and make certain they remain installed at all times when operating this Cutter. FIGURE 21 FIGURE 22 A20IV/A14IV 10/03 Assembly Section 3-13 © 2004 Alamo Group Inc.
Page 84 INLET PORT OUTLET PORT TO TO VALVE RESERVOIR THREE SPOOL FRONT HOSE CONTROL VALVE BRACKET REAR HOSE BRACKET AXLE LIFT CYLINDER RESTRICTOR RESTRICTOR LEFT WING LIFT CYLINDER RIGHT WING LIFT CYLINDER A20IV/A14IV 10/03 Assembly Section 3-14 © 2004 Alamo Group Inc.
Page 85 OPERATION SECTION Operation Section 4-1...
Page 86 ALAMO INDUSTRIAL A14-IV/A20-IV ROTARY MOWER OPERATION INSTRUCTIONS Alamo Industrial A14-IV/A20-IV rotary mowers are manufactured with quality material by skilled workers. These mowers are designed to cut grass, weeds, crop stalks, small brush and other vegetative material up to 2-1/2” diameter. The mower is equipped with protective deflectors and/or chain guards to prevent objects being thrown from the mower by the blades, however, no shielding is 100% effective.
Page 87 OPERATION (7) DRIVELINE ATTACHMENT......................4-15 (7.1) Driveline Length Check......................4-15 (7.2) Constant Velocity (CV) Driveline..................4-17 (8) PRE-OPERATION INSPECTION AND SERVICE................4-18 (8.1) Tractor Pre-Operation Inspection/Service................4-19 (8.2) Mower Pre-Operation Inspection/Service................4-19 (9) DRIVING THE TRACTOR AND MOWER..................4-22 (9.1) Starting the Tractor......................4-23 (9.2) Brake and Differential Lock Setting..................4-23 (9.3) Operating the Mower Wings....................4-24 (9.4) Driving the Tractor and Mower.....................4-25 (9.5) Crossing Ditches and Steep Inclines...................4-26...
Page 88 Standard *Safety Deflectors are standard equipment. Single and double chain guards are available as extra equipment at extra cost. Alamo Industrial recommends mowers be equipped with deflectors or double chain guards for all mowing purposes. Single chain guards may be used for agriculture purposes only and are specifically not recommended for highway, right-of-way, parks or greenbelt mowing.
Page 89 OPERATION 1. OPERATOR REQUIREMENTS Safe operation of the rotary mower is the responsibility of a qualified operator. A qualified operator has read and understands both the mower and tractor Operator Manuals and is experienced in tractor and mower operations and all associated safety practices. In addition to the safety messages contained in this manual, safety message decals are affixed to the mower and tractor.
Page 90 OPERATION 2. 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 91 OPERATION 2.3 Tractor Horsepower The horsepower required to operate the mower depends on several operating factors including the vegetation to be cut, terrain condition, operator experience, condition of the mower and tractor, and others. For most mowing conditions, the SR14 and SR20 mower requires a tractor with a minimum of 75 HP. Operating the mower with a tractor that does not have adequate power may damage the tractor engine.
Page 92 OPERATION 2.6 Front End Weight A minimum of 20% total tractor weight must be maintained on the tractor front end at all times. Front end weight is critical to maintain steering control and to prevent the tractor from rearing up while driving. If the front end is too light, add weight until a minimum of 20% total weight is reached on the front tires.
Page 93 OPERATION 3. GETTING ON AND OFF THE TRACTOR Before getting onto the tractor, the operator must read and completely understand the mower and tractor operator manuals. If any part of either manual is not completely understood, consult an authorized dealer for a complete explanation.
Page 94 OPERATION DANGER! BEFORE leaving the Tractor seat, always engage the brake and/or set the Tractor transmission in parking gear, disengage the PTO, stop the engine, remove the key, and wait for all moving parts to stop. Place the Tractor shift lever into a low range or parking gear to prevent the Tractor from rolling.
Page 95 OPERATION 5. 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 on blocks. Place a block in front of and behind the center section wheels to prevent the mower from moving.
Page 96 OPERATION 5.2 Connecting Mower Hydraulic Lines to the Tractor With the tractor shut down and secured in position, relieve hydraulic pressure from the tractor by moving the control levers back and forth several times or placing the levers in the float position. When connecting the mower hydraulic lines, keep hoses, quick couplers, and swivels free of contamination.
Page 97 OPERATION 6. SETTING THE MOWER Properly setting the cutting height is essential for efficient and safe operation. A properly set mower will make a more uniform cut, distribute clippings more evenly, require minimal tractor work, and follow the contour of uneven terrain.
Page 98 OPERATION LEVELING WING SECTIONS WITH CENTER 1. To level the wing sections with the deck center, adjust the leveling screw between the wing axle and the center axle. To lower the wing, loosen the jamnut and shorten the screw assembly, lengthen the screw assembly to raise the wing.
Page 99 OPERATION 7. 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, pull the driveline yoke collar back and align the grooves and splines of the yoke with those of the PTO shaft.
Page 100 OPERATION “ Bottoming Out” Check Procedure 1. Disconnect driveline from the tractor and slide the profiles together until fully compressed. 2. Place a mark on the inner shield 1/8” from the end of the outer shield and reattach the driveline to the PTO shaft.
Page 101 OPERATION 7.2 Constant Velocity (CV) Driveline For mowers equipped with a Constant Velocity (CV) driveline, the maximum turning angle between the tractor and mower must be determined to ensure the joint angle does not over-extend which can cause CV joint damage. Constant Velocity joints enable the driveline to operate smoothly with no vibrations and clattering at angles up to 70°.
Page 102 OPERATION 8. PRE-OPERATION INSPECTION AND SERVICE Before each use, a pre-operation inspection and service of the mower 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 mower and tractor if the pre-operation inspection reveals any condition affecting safe operation.
Page 103 OPERATION 8.1 Tractor Pre-Operation Inspection/Service Refer to the tractor operator’s manual to ensure a complete pre-operation inspection and scheduled service is performed according to manufacturer recommendations. The following is a partial list of items requiring inspection: Tire condition/air pressure Wheel lug bolts Steering linkage PTO shield SMV sign is clean and visible...
Page 104 OPERATION Ensure that the Manual Canister is secured to the mower with the Operator’s Manual inside. Ensure all decals are in place and legible. Replace missing, worn, and unlegible decals. NOTE: The mower Operator’s Manual and affixed Decals contain important instructions on the safe and proper use of the mower.
Page 105 OPERATION Perform scheduled lubrication as specified in the maintenance section. Inspect each gearbox oil level and replenish if needed. A low oil level is a warning sign that the gearbox may be cracked or its seal is damaged and needs to be replaced. Ensure all gearbox vents are in place and free from clogs.
Page 106 OPERATION 9. DRIVING THE TRACTOR AND MOWER 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 mower and the tractor operating controls are set for safe transport.
Page 107 OPERATION 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 108 OPERATION 9.3 Operating the Mower Wings Wings are positioned with hydraulic cylinders. It is recommended that the tractor be equipped with three hydraulic ports or a 3-spool control valve be used so that each section can be controlled independently. Ensure the hydraulic cylinders and lines are filled with oil by holding the valve control levers in the raised position until the cylinders fully retract (wings) and extend (center).
Page 109 OPERATION 9.4 Driving the Tractor and Mower Start off driving at a slow speed and gradually increase your speed while maintaining complete control of the tractor and mower. Moving slowly at first will also prevent the tractor from rearing up and loss of steering control. The tractor should never be operated at speeds that cannot be safely handled or which will prevent the operator from stopping quickly during an emergency.
Page 110 OPERATION 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 111 OPERATION 10. OPERATING THE TRACTOR AND MOWER THE OPERATOR MUST COMPLETELY UNDERSTAND HOW TO OPERATE THE TRACTOR AND MOWER AND ALL CONTROLS BEFORE ATTEMPTING TO MOW. The operator must read and understand the Safety and Operation Sections of the mower and tractor operator’s manuals. These manuals must be read and explained to any operator who cannot read.
Page 112 OPERATION If you hit a solid object or foreign debris, stop the mower and tractor at once. Immediately idle the engine speed and disengage the PTO. Wait for all mower rotating motion to stop, then raise the mower and move the tractor and implement off the object.
Page 113 OPERATION 10.3 Engaging the Power Take Off (PTO) Before engaging the PTO, make certain that the area is clear of bystanders and passersby. The mower wings must be completely lowered and the deck positioned at a safe mowing height. NEVER engage the PTO with the mower wings in the raised position.
Page 114 OPERATION 10.5 Operating the Mower Only operate the mower from the tractor operator’s seat with the seatbelt securely fastened. The tractor must be equipped with a ROPS in the raised position or a ROPS cab. The mower is designed to cut vegetation up to 2-1/2” in diameter. Sharp blades will produce a cleaner cut and require less power.
Page 115 OPERATION When you get to the end of a pass, slightly raise the mower (2-4”) before turning. Never raise the mower entirely while the blades are turning. If the mower must be raised higher than 12” from ground level, disengage the tractor PTO and wait for all mower rotation to come to a complete stop before proceeding to raise the mower.
Page 116 OPERATION Large, dense, or wet vegetation may need to be mowed in two or more passes to achieve a uniform cut. In such conditions, raise the cutting height up to 15” on the first pass. Then lower the mower to the desired height and mow the vegetation a second time.
Page 117 OPERATION 10.6 Shutting Down the Mower To shut down the mower, first bring the tractor to a complete stop. Then slow down the mower by reducing the engine speed before disengaging the PTO. Wait for all rotating motion to stop before proceeding to drive or shut down the tractor.
Page 118 OPERATION 11. DISCONNECTING THE MOWER FROM THE TRACTOR DANGER! 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. (S3PT-15) WARNING! Never unhitch without using the Tongue Jack.
Page 119 OPERATION 12. MOWER STORAGE It is recommended that the mower be stored with the center section and both wings fully lowered to ground level. If the mower is stored with the wings in the raised position, select a level area and install wing transport braces to prevent the wings from falling BEFORE disconnecting the mower hitch from the tractor.
Page 120 OPERATION 13. TRANSPORTING THE TRACTOR AND MOWER Inherent dangers of operating the tractor and mower and the possibility of accidents are not left behind when you finish mowing an area. Therefore, the operator must employ good judgement and safe operation practices when transporting the tractor and mower between locations.
Page 121 OPERATION Before transporting the tractor on a public roadway or boarding a trailer for transport, the tractor brake pedals should be locked together. Locking the pedals ensures that both wheels brake simultaneously while stopping, especially when making an emergency stop. Use extreme caution and avoid hard applications of the tractor brakes when towing heavy loads at road speeds.
Page 122 OPERATION 13.1 Transporting on Public Roadways WARNING! Only tow the Implement behind a properly sized and equipped Tractor which exceeds the weight of the Implement by at least 20%. DO NOT tow the Implement behind a truck or other type of vehicle. Never tow the Implement and another Implement connected in tandem.
Page 123 OPERATION Make sure that all tractor flashing warning lights, headlights, and brake/taillights are functioning properly before proceeding onto public roads. While newer model tractors have plenty of lighting to provide warning signals and operating lighting, most older models where only equipped with operating lights. Consult an authorized tractor dealer for lighting kits and modifications available to upgrade the lighting on older tractor models.
Page 124 OPERATION 13.2 Hauling the Tractor and Mower Before transporting a loaded tractor and mower, measure the height and width dimensions and gross weight of the complete loaded unit. Ensure that the load will be in compliance with the legal limits set for the areas that will be traveled through.
Page 125 OPERATION 14. TROUBLE SHOOTING GUIDE TROUBLE POSSIBLE CAUSE POSSIBLE REMEDY Excessive Vibrations 1. Check gear box bolts. Tighten if loose. 2. Check for loose nuts on Tighten if loose. bladeholder and blades. 3. Check for bent output shaft. Replace shaft if bent. If shaft is bent, oil will normally leak from bottom seal.
Page 126 OPERATION TROUBLE SHOOTING TROUBLE POSSIBLE CAUSE POSSIBLE REMEDY Gear Box Noisy 1. Rough gears. Run in or change gears. 2. Worn bearing. Replace bearing. Gear Box Leaking 1. Damaged oil seal. Replace seal. 2. Bent shaft. Replace oil seal and shaft. 3.
Page 127 OPERATION TROUBLE SHOOTING TROUBLE POSSIBLE CAUSE POSSIBLE REMEDY Oil Squirting from Breather Vent 1. Oil leaking by piston ring. (A Do not carry cutter on cylinder. Hole small amount of leakage is (Use stroke collars) normal) 2. Piston "O" ring worn. Replace piston "O"...
Page 129 MAINTENANCE SECTION Maintenance Section 5-1...
Page 130 FIGURE 1 Lubrication Fitting Location ITEM DESCRIPTION FREQUENCY U-Joints 8 hours Gearbox Check daily Divider Gearbox Check daily Axle Adjustment Rod 8 Hours Wheel Hubs Weekly Axle Pivot Points 8 hours A20IV/A14IV 10/03 Maintenance Section 5-2 © 2004 Alamo Group Inc.
Page 131 Gearboxes. Filler Plugs are located on top of all Gearboxes. FIGURE 3. FILLER PLUG FILLER PLUG TEST PLUG Do Not Operate Without Shields In Place FIGURE 3 Required lubricant is NLGI 000 Grease(P/N 00769030) for extreme pressure and temperature. A20IV/A14IV 10/03 Maintenance Section 5-3 R 03-31-98 © 2004 Alamo Group Inc.
Page 132 U-Joint. If there is noticeable movement in the Driveline replace the U-joint before it causes severe damage to the Driveline. GREASE EVERY 8 HOURS FIGURE 5 FIGURE 6 A20IV/A14IV 10/03 Maintenance Section 5-4 © 2004 Alamo Group Inc.
Page 133 Slide guard cone for double yoke over cam from the connecting end. Make sure holes for screws are visible. FIGURE 13. Tighten locking screws. FIGURE 14. FIGURE 10 FIGURE 11 FIGURE 12 FIGURE 13 FIGURE 14 A20IV/A14IV 10/03 Maintenance Section 5-5 © 2004 Alamo Group Inc.
Page 134 Figure 15) Remove the two shield bearings per half shaft by prying the head of the bearings up with a screwdriver, and pulling them out with pliers. Figure 16) Grasp the Yoke and shield tube and pull shaft from the shield. A20IV/A14IV 10/03 Maintenance Section 5-6 © 2004 Alamo Group Inc.
Page 135 Figure 17) Grease the shield bearing grooves on the yokes and the inner telescoping member before assembly. Figure 18) Grease and install the sleeve baring in groove at the end of the sleeve (only on one half shaft). A20IV/A14IV 10/03 Maintenance Section 5-7 © 2004 Alamo Group Inc.
Page 136 Figure 20) Install two shield bearings per half shaft by pushing one bearing in each bearing hole. The shield bearings should be installed in the direction of the shaft rotation relative to the shields Figure 21 Figure 21) Attach safety decal as needed. A20IV/A14IV 10/03 Maintenance Section 5-8 © 2004 Alamo Group Inc.
Page 137 1/2" MAXIMUM Original Blade Edge NOTE: Replace Blades in pairs after no more than 1/2" notch wear! A20IV/A14IV 10/03 Maintenance Section 5-9 © 2004 Alamo Group Inc.
Page 138 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 , PTO disengaged, and the cutter blocked in the raised position. A20IV/A14IV 10/03 Maintenance Section 5-10 © 2004 Alamo Group Inc.
Page 139 Do not exceed 20 M.P.H. on Airplane or Rib Implement Tires. Maximum airplane tire inflation pressure is 50 PSI, minimum inflation pressure is 20 PSI. Inflate ribbed implement tires to manufacturer rated PSI as shown on the tire sidewall. A20IV/A14IV 10/03 Maintenance Section 5-11 © 2004 Alamo Group Inc.
Page 140 Dragging the Skid Shoes on the ground or running the Skid Shoes into solid objects can contribute to early frame failure on the mower. Replace worn Skid Shoes as required. A20IV/A14IV 10/03 Maintenance Section 5-12 © 2004 Alamo Group Inc.
Page 141 NOTE: These values apply to fasteners as received from supplier, dry or when lubricated with normal engine oil. They do not apply if special graphited or molydisulphide greases or other extreme pressure lubricants are used. This applies to both UNF fine and UNC coarse threads. A20IV/A14IV 10/03 Maintenance Section 5-13 © 2004 Alamo Group Inc.
Page 142 HANDLE THEM SAFELY. LIFT CAREFULLY AND PROPERLY USING YOUR LEGS TO LIFT - NOT YOUR BACK. NOTICE: REFER TO OPERATOR’S MANUAL FOR INSTRUCTIONS FOR PROPER RE-ASSEMBLY ONTO THE CUTTER DECK. TIGHTEN CORRECTLY. A20IV/A14IV 10/03 Maintenance Section 5-14 © 2004 Alamo Group Inc.
Page 143 Remove all eight of the M10 Bolts from both Cap Hubs, using a 14mm socket. FIGURE 14. Remove the Hub Assemblies and gaskets from the Main Housing. FIGURE 15. FIGURE 14 FIGURE 15 A20IV/A14IV 10/03 Maintenance Section 5-15 © 2004 Alamo Group Inc.
Page 144 Shaft has cleared the Bearing, it can be fully removed from the Hub Assembly. The remaining Bearings and Bearing Cups can be removed by conventional means. FIGURE 17. FIGURE 17 A20IV/A14IV 10/03 Maintenance Section 5-16 © 2004 Alamo Group Inc.
Page 145 The unit is now completely disassembled with exception of Oil Seals and Bearing Races that can be removed by conventional means. FIGURE 20. Inspect and replace all worn or defective parts. FIGURE 20 A20IV/A14IV 10/03 Maintenance Section 5-17 © 2004 Alamo Group Inc.
Page 146 Place the Gear FIGURE 25 on the Shaft so that the threads, for the Adjusting Nut, on Shaft are exposed. FIGURE 21 FIGURE 22 FIGURE 23 FIGURE 24 FIGURE 25 A20IV/A14IV 10/03 Maintenance Section 5-18 © 2004 Alamo Group Inc.
Page 147 10 to 12 inch pounds is reached on the Shaft. Install Cotter Pin FIGURE 29 making sure it does no Bend over the end of the shaft. FIGURE 26 FIGURE 27 FIGURE 28 FIGURE 29 A20IV/A14IV 10/03 Maintenance Section 5-19 © 2004 Alamo Group Inc.
Page 148 FIGURE 30. Drive the Seal into the base of the Hub Cap. FIGURE 31-34. Care should be taken to keep the Seal in line with the base when driving it into place. FIGURE 30 FIGURE 31 FIGURE 32 FIGURE 33 FIGURE 34 A20IV/A14IV 10/03 Maintenance Section 5-20 © 2004 Alamo Group Inc.
Page 149 The correct adjustment of the Input Shaft Bearings is when the Shaft turns freely, but cannot be moved from side to side in the Housing. FIGURE 37 FIGURE 38 A20IV/A14IV 10/03 Maintenance Section 5-21 © 2004 Alamo Group Inc.
Page 150 Gaskets and around the flange of the Hub Cap. FIGURE 41. Install the Spindle Hub assembly back on Main Housing and install all eight Bolts. Tighten to a torque of 31 to 34 foot pounds. FIGURE 42. FIGURE 41 FIGURE 42 A20IV/A14IV 10/03 Maintenance Section 5-22 © 2004 Alamo Group Inc.
Page 151 31 to 34 foot pounds. FIGURE 41 & 42. The assembly should now be filled with a good grade of NLGI 000 Grease. FIGURE 41 FIGURE 42 A20IV/A14IV 10/03 Maintenance Section 5-23 R 06-21-99 © 2004 Alamo Group Inc.
Page 152 Gasket, Top Cover Shim (0.10) Shim (0.25) Shim (0.50) Bolt, Front Cover Cap, Front Bearing Retaining Seal, Input Shaft, Input Gear, Input Spacer, Short Shim (0.30) Shim (0.40) FIGURE 43 Shim (0.50) A20IV/A14IV 10/03 Maintenance Section 5-24 © 2004 Alamo Group Inc.
Page 153 Step 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. A20IV/A14IV 10/03 Maintenance Section 5-25 © 2004 Alamo Group Inc.
Page 154 20 minutes so oil will have time to seep down around Output Shaft bearings then finish filling with oil, This procedure may take longeer on Cold days or Shorter on Hot days. Always recheck Oil Level after gearbox has been run approximately 1/2 hour. A20IV/A14IV 10/03 Maintenance Section 5-26 © 2004 Alamo Group Inc.
Page 155 WARRANTY 1. LIMITED WARRANTIES 1.01.Alamo Industrial 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 157 TO THE OWNER/OPERATOR/DEALER 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 (1928.51 Subpart C) makes these minimum safety requirements of tractor operators: REQUIRED OF THE OWNER:...
Page 158 AG20M - SOM - 10/03 P/N 00766780C Printed U.S.A.
Page 159 FIRST CLASS MAIL PERMIT NO. 80 SEGUIN, TX POSTAGE WILL BE PAID BY ADDRESSEE ALAMO INDUSTRIAL 1502 E. Walnut St. SEGUIN TX 78156-9967 ® ATTENTION: ANY CLAIM SUBMITTED TO ALAMO INDUSTRIAL WILL BE REFUSED UNTIL COMPLETED, SIGNED WARRANTY REGISTRATION CARD IS ON FILE.
Page 160 BEFORE MAILING WARRANTY CARD, MAKE SURE ALL INFORMATION IS LEGIBLE ® ALAMO INDUSTRIAL WARRANTY REGISTRATION INFORMATION MONTH YEAR Serial No. Purchase Date Alamo Ind. Model Purchaser First Name M.I. Last Name Street & No., RFD, Box, &/or Apt. No. State or...
Page 162 1. PRINT FIRMLY. 2. REMOVE WHITE COPY FOR CUSTOMER RECORDS. 3. REMOVE YELLOW COPY FOR DEALERS RECORDS. 4. MAIL LAST CARD POSTAGE FREE. ® ALAMO INDUSTRIAL WARRANTY REGISTRATION INFORMATION MONTH YEAR Serial No. Purchase Date Alamo Ind. Model Purchaser First Name M.I.
Page 164 1. PRINT FIRMLY. 2. REMOVE WHITE COPY FOR CUSTOMER RECORDS. 3. REMOVE YELLOW COPY FOR DEALERS RECORDS. 4. MAIL LAST CARD POSTAGE FREE. ® ALAMO INDUSTRIAL WARRANTY REGISTRATION INFORMATION MONTH YEAR Serial No. Purchase Date Alamo Ind. Model Purchaser First Name M.I.

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