Alamo 7191852C User Manual
Pa91, Operator’s manual, Rear-mount boom mower
Table of contents
Document Outline
- PA91
- OPERATOR’S MANUAL
- To the Owner/Operator/Dealer
- Alamo Industrial Division is willing to provide
- one (1) AEM Mower Safety Practices Video
- TABLE OF CONTENTS
- 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
- Concluding Safety Instructions and Practices
- Decal Location
- 1. 002369 1 DANGER Multiple Hazard Flail
- 2. 02958241 1 DANGER Multiple Hazard Boom
- 3. 02965262 1 DANGER Oil Leak/Penetration
- 4. 02965100 1 INSTRUCT Use Genuine Alamo Industrial Parts
- 5. 02962764 2 DANGER Pinch Points/Scissors
- 6. 02962765 1 DANGER Multiple Hazard/Crushing
- 7. 02965093 1 ATTENTION Do not over speed engine
- 8. 00763977 1 NOTICE Operator’s Manual Shipped with Equipment
- 9. 02977417 1 NOTICE Operator’s Manual Inside
- 10. 03200437 1 WARNING Pressurized Tank
- 11. 00769737 1 DANGER Keep Away Thrown Objects
- 12. 00756005 1 DANGER Rotating Driveline, Entanglement
- 13. 00756007 1 DANGER Use/Repair Shields & Guards
- 14. 00756485 1 DANGER Blades, Thrown Objects
- 15. 00756494 1 DANGER Driveline Hazards
- 16. 02958241 1 DANGER Boom Mower Multi-Hazard
- 17. 000678 3 INSTRUCT Grease Fitting Inside
- 18. 000108 1 INSTRUCT Flail Operating Instructions
- 19. 02966305 1 INSTRUCT Use Universal Hyd Oil
- 20. 1290030 1 INSTRUCT EP90 Oil in Speed Increaser
- 21. 00725746 1 PELIGRO Spanish Warning
- 22. D103 1 WARNING 540 PTO
- 23. 03200347 1 REFLECT SMV Sign
- 24. 1458392 2 REFLECT Red
- 25. 1458393 2 REFLECT Amber
- 26. 00773723 1 PELIGRO Rotating Driveline Translation
- 27. 02976881 1 INSTRUCT Mowing Safety Tips
- 28. 001651 2 LOGO NAME Alamo Industrial
- 29. 001650 1 LOGO Alamo Industrial
- 30. NFS 1 SER PLT Serial Plate
- 31. 7191852C 1 _________ PA91 Operator’s Manual
- 32. 02977046 1 _________ AEM Mower Safety Manual
- 33. 02153100 2 _________ Bolt
- 34. 00776031 1 _________ Operator’s Manual Canister
- 35. 10058000 1 _________ Bolt
- 36. 02919924 3 _________ Locknut
- 37. 00024100 3 _________ Flatwasher
- 38. 02982492 1 _________ Bracket, Canister
- Decal Description
- SAFETY SECTION
- Federal Laws and Regulations
- These hydraulically driven flail trimmers are designed for medium-duty work. They can mow pastures and control grass and weeds on highways or industrial sites.
- For Non-Agricultural use, OSHA, ASAE, SAE and ANSI standards require the use of Chain Guards, Deflectors, or Solid Skirts at all times. The Mower manufacturer strongly recommends the use of Chain Guards, Deflectors, or Solid Skirts for Agricultural p...
- At least 20% of the tractor’s total weight must be on the front tires with the Mower lifted to provide adequate traction for safe steering under good conditions. Slow down on hills, rough terrain, and curves.
- Mower Orientation: Front and rear, and left and right are determined by the normal direction of travel (the same as on your automobile).
- ATTENTION OWNER/ OPERATOR
- TRACTOR SELECTION
- TRACTOR PREPARATION
- Fitting Operator Guard
- Ballast Weight
- JOHN DEERE CONVERSION KIT (81- 30- 059)
- 1. A flow limiting valve manufactured by John Deere is available to provide an “open center” external supply sufficient for PA91 requirements. For further advice consult your John Deere dealer.
- 2. Components are available from F.W. McConnel Ltd. to convert the standard “open center” valve. Part No. 81-30-059 consists of a relief valve blanking plug which should be installed in place of existing relief valve. Be careful when extracting t...
- DELIVERY
- 1. The machine is delivered in a partially dismantled condition. To make ready for attachment to the tractor it will be necessary to select a hard level surface
- 2. Cut the banding straps and remove the attached articles.
- 3. Fill the reservoir to capacity with oil selected from the chart on Section 3-9 to increase the stability of the machine.
- 4. Remove and discard the transport strap connecting the flail head to the frame and also the lift ram stop strapped to the rod.
- ATTACHMENT TO TRACTOR
- Si Model
- 1. On Si model, drive the tractor up as closely as possible and connect the return and supply hoses to the tractor. Fit suitable return connection to the tractor and connect the return hose before connecting the supply hose to the tractors external s...
- 2. Swing up the linkage plate and fix securely in position with the nut and bolt provided.
- 3. Adjust tractor drop arms to enable the draft links to lower within 15 ins (375 MM.) of the ground.
- 4. Remove the top link and machine yoke completely.
- 5. Reverse the tractor squarely to the front of the machine, engage draft link pins and secure.
- 6. Attach yoke to the top hitch position on the tractor ensuring the lug for the top link is uppermost.
- 7. Unlimber the machine controls from its storage position and fit into the tractor cab.
- 8. Install the top link between the yoke and upper hitch position on the machine. If necessary, fit Cat I sleeves into the ball ends of the top link.
- 9. Lower the machine to the ground and fit the PTO shaft in position. Ensure that the collar locking devices on the PTO shaft are fully engaged. Wrap the torque chain around the tractor drawbar or any convenient point to prevent the shaft guard from ...
- 10. Raise the machine to working height.
- Ti Model
- 1. Check that the rotor control valve is in the STOP position.
- 2. With PTO engaged on Ti model or with tractor external services activated on Si model, select “Lift Down”. This will level the frame and enable the lower yoke pins to be fitted. Select the hole which will, as near as possible position the PTO s...
- 3. Lower the quadrant lever so that the machines weight is taken by the yoke.
- 4. Adjust the top link to bring the pillar upright.
- 5. Carry out final adjustment of the tractor lift arm leveling box to bring the main frame horizontal. This should be checked with the arms at approximately half reach with the flail head clear of the ground.
- 6. Tighten up the check chains or adjustable stabilizers to hold the machine rigid without side-sway.
- 7. Raise the parking feet in their sockets and secure in the transport position.
- 8. Carefully operate the machine through its full range of movement while checking that the hoses are not strained, pinched, chaffed or kinked and that all movements are functioning correctly.
- 9. Assemble the front hood to the flail head.
- 10. Fold the machine into the transport position.
- 11. The machine is now ready to proceed to the work site.
- Si Model
- FITTING CONTROL UNIT IN CAB
- OIL REQUIREMENTS
- RUNNING UP PROCEDURE
- PA91 Ti
- 1. Ensure that the rotor control is in “STOP” position, start the tractor, engage PTO and allow the oil to circulate for about 5 minutes without operation of the armhead control lever. This will allow all the oil to circulate thoroughly through t...
- 2. Operate the armhead levers through their complete range ensuring that all movements are functioning correctly.
- 3. Place the flail head at a safe attitude and move the rotor control to “ON” position. After initial fluctuation due to priming, the rotor should settle to a steady speed. Increase PTO speed to approximately 360 RPM and run for a further five mi...
- PA91 Si
- 1. Ensure PTO lever is in neutral position, and isolate tractor hydraulic linkage. Start the tractor and select external service supply on the hydraulic controls. Allow the tractor to run for several minutes before attempting to operate any of the ma...
- 2. While operating, move the levers through their complete range ensuring that all movements are functioning correctly.
- 3. Check the tractor rear axle oil level and top up if necessary.
- 4. Place the flail head at a safe attitude and bring tractor engine revolutions to 1000 RPM to avoid stalling when the starting load is placed on the motor. Engage PTO and allow the rotor to run for several minutes. Do not leave the tractor cab or al...
- 5. After running up the machine, increase PTO speed to approximately 360 RPM. Run machine further for five minutes before disengaging the PTO and stopping tractor. The reason for this running period under a no load condition is to thoroughly circulat...
- 6. Check the hose runs and observe that they are free from any pinching, chafing, straining or kinks. Recheck the oil level in the tank and top up as necessary.
- PA91 Ti
- REMOVAL FROM TRACTOR
- 1. Select a firm level site for parking the machine.
- 2. Lower the parking legs and secure.
- 3. Operate the hydraulic service to place the arms at 1/2 to 3/4 reach and with the flail head roller horizontal and level with the bottom of the parking feet.
- 4. Disengage tractor PTO and remove.
- 5. Disconnect stabilizers bars or loosen check chains as applicable.
- 6. Unbolt the control unit from the mounting pillar, remove from tractor cab and stow in a suitable location clear of the ground. On Si models only, the supply and return hoses must be disconnected from the tractor and stowed with their ends covered ...
- 7. Raise the machine on the tractor’s linkage to take the weight off the yoke and remove the lower yoke bolts.
- 8. Lower the tractor draft links and place machine firmly on the ground.
- 9. Remove draft links and top link from the machine, drive tractor away and remove yoke. Blank off the end of the return hose with plug or small plastic bag if a self-seal coupling is not fitted.
- STORAGE
- PROPER TORQUE VALUES FOR FASTENERS
- 1. Standard Equipment and Specifications
- 3. TRACTOR REQUIREMENTS
- Tractor Requirements and Capabilities
- 3.1 ROPS and Seat Belt
- 3.2 Operator Thrown Object Protection
- 3.3 Tractor Lighting and SMV Emblem
- 3.4 Tractor Ballast
- 3.5 Tractor Safety Devices
- 3.6 Tractor Horsepower
- 3.7 3-Point Hitch
- 3.8 Hydraulics
- 3.9 Front End Weight
- 3.10 Power Take Off (PTO)
- 4. GETTING ON AND OFF THE TRACTOR
- 5. STARTING THE TRACTOR
- 5.1 Connecting Attaching Head to the Boom
- 6. PRE-OPERATION INSPECTION AND SERVICE
- 7. OPERATING THE BOOM MOWER
- 7.11 Flail Types
- 8. DRIVING THE TRACTOR AND IMPLEMENT
- 9. OPERATING THE TRACTOR AND IMPLEMENT
- 9.1 OPERATING INSTRUCTIONS
- 1. Engage the PTO shaft at low engine RPM and speed the engine up after blades are fully engaged. Never engage the PTO shaft at a high engine RPM. This could cause damage to the PTO shaft as well as the Speed Increaser and Pump. Always operate PTO at...
- 2. Proper ground speed for cutting will depend upon the height, type, and density of material to be cut. Normally, ground speed will range from 2 to 5 m.p.h. Tall dense material should be cut at low speed while thin medium height material can be cut ...
- 3. Always run the Mower at the highest position which will enable you to obtain the desired cutting results. Allowing the blades to cut into the ground will cause wear and undue strain on the mower frame and mower components.
- When cutting foliage and fine shredding is desired, run the mower level or slightly lower in the rear so as to keep the material in the mower until it is shredded. This will require more power but will shred better. When cutting heavy foliage and fin...
- 9.2 Foreign Debris Hazards
- 9.3 Bystanders/Passersby Precautions
- 9.4 Engaging the Power Take Off (PTO)
- 9.5 Operating Speed and Ground Speed
- 9.6 Operating the Mower
- 9.7 Shutting Down the Attached Head
- 9.1 OPERATING INSTRUCTIONS
- 9.8 TRACTOR, BOOM, AND ATTACHED HEAD STORAGE
- 10. TRANSPORTING THE TRACTOR AND IMPLEMENT
- 11. TROUBLESHOOTING GUIDE
- LUBRICATION
- 1. Power take-off shaft - The PTO shaft should be regularly examined to ensure that it is in good condition together with the guards. The universal joints should be greased very sparingly, i.e., one shot a week.
- 2. The two halves of the plastic guard should be checked daily to ensure that they can spin freely on the shaft. The nylon slip rings which support the guard on the drive shaft should be lightly greased at weekly intervals.
- 3. The telescoping drive shaft should be similarly separated and grease applied to the internal shaft at approximately 100 hour intervals.
- HYDRAULIC SYSTEM
- HYDRAULIC PUMPS
- 1. All pumps are rotate clockwise. No routine maintenance is necessary other than a periodical check for tightness of the mounting bolts and a visual check for oil leakage especially around the pump supply and pressure unions. Where two hose clips ar...
- 2. Pump serving is limited to replacing seals, gaskets and “O” rings. Servicing should take place under clean dust free conditions. Pumps should be thoroughly washed and their end plates and body lightly identified with scribe marks to ensure cor...
- 3. When reassembly, lubricate all components with clean oil and tighten down the securing bolts in a diagonal sequence to pull the pumps squarely together. Finally, tightening to a torque load of:
- 4. Check for freedom of rotation. The pumps should turn freely under a hand load applied on a 6” radius arm. If tight, the lobe seals and/or backing washers have been trapped and the unit must be dismantled to rectify this.
- 5. After installation, the serviced pumps should be run for several minutes under a “no load” condition before load is gradually applied. During this time, frequent checks should be made of the pump casing temperature. An excessive temperature ri...
- 6. Generally, it is unwise to replace major components since they have to be matched in sets. Unless this is done, the pump will be inefficient resulting in overheating and power loss. No detailed parts breakdown is shown, but factory reconditioned u...
- FLAILHEAD
- 1. Frequently inspect the rotor assembly for damaged or missing flails. Bolts and nuts securing the flails to the rotor should be regularly checked and kept tight. The correct torque setting for these locknuts is 135 Nm (100 lbs/ft.). Use only the co...
- 2. Do not attempt to run the rotor with flails missing. Imbalance will cause severe vibration and can rapidly damage the rotor shaft bearings. As an emergency measure, if a flail is broken off or lost, remove another on the opposite site of the rotor...
- 3. Blunt flails absorb a lot of power and leave an untidy finish to work. They should be sharpened on a grindstone or with a portable grinder periodically. Wear protective gear when sharpening flails.
- 4. Ensure that the bearing housings and hydraulic mounting nuts and bolts are kept tight. They should be checked during servicing.
- CABLE OPERATED ARMHEAD CONTROL VALVE
- Replacing Damaged or Worn Spool “O” Rings
- 1. Release the locknut located on the cable at the back of the sleeve.
- 2. Remove the two allen headed capscrews that secure the sleeve to the valve block and screw the sleeve back down the threaded portion of the cable to reveal the clevis pin which is then withdrawn from the end of the spool. Take care not to lose the ...
- 3. Remove the spring cover at the opposite end of the spool and remove the setscrew to release the return spring assembly.
- 4. Pull the spool through the block out of the return spring end.
- 5. Remove the “O” ring marked “B” and refit a new “O” ring.
- 6. Lightly oil the spool and replace it in the block from the return spring end, pushing it through just far enough to clear “O” ring groove at “A”.
- 7. Fit new “O” ring in groove “A”.
- 8. Push the spool back through from the cable end far enough to reassemble the return spring assembly and cover.
- 9. Replace the clevis pin in the spindle eye and reassemble the sleeve. Adjustment of the threaded section, being correct when the handle on the control box, is in a vertical position. Retighten the locknut.
- 10. The spools are selectively assembled, matched with their mating bores in the block and should not be interchanged.
- Main Relief Valve
- Non-Return Valve
- CABLES
- Replacing Damaged or Worn Spool “O” Rings
- HYDRAULIC RAMS
- Ram Seal Replacement - General Information
- 11. Whenever possible the ram should be removed from the machine and cleaned off before dismantling on a clean work bench.
- 12. When using a bench vice, do not apply excessive pressure to the ram cylinder - use soft metal jaws when grasping the ram rod.
- 13. Lubricate all new seals thoroughly prior to assembly.
- Angling Arm
- 1. Unscrew the gland and withdraw the complete rod assembly. Remove piston locking nut, slide the piston and gland housing of the rod.
- 2. Lubricate all new seals prior to assembly.
- 3. Replace the gland seals ensuring they are positioned in the same location from which they were removed. Carefully place the gland housing complete with seals back on the rod.
- 4. Separate the piston halves and discard rod seals. Rebuild the piston onto the rod, fitting a new piston rod “O” ring.
- 5. The piston seals can be replaced in conjunction with the above operation, or alternatively, gently pried into position after the piston and locking nut are reassembled.
- 6. Refit the piston locking nut using “Permabond A113” or a similar medium strength thread locking compound.
- 7. Reassemble the complete rod into the ram cylinder. Screw in gland housing and tighten.
- Reach Ram
- Ram Seal Replacement - General Information
- ROTOR CONTROL VALVE/RELIEF VALVE
- Relief Valve
- Replacing Worn or Damaged “O” Rings
- 1. The cable and spring centering mechanism must be removed. The brass bobbin at either end can be extracted and the “O” rings can be removed from their locations using a soft hooked implement.
- 2. Replace the “O” rings carefully feeding them over the spool ends.
- 3. Replace the brass bobbins and reassemble the spring centering mechanism and cable to the valve.
- P.T.O. GEARBOX
- HYDRAULIC MOTOR
- Replacing Shaft Seals
- 1. The double shaft seal assembly must be assembled with the 7 MM. wide single lip seal fitted first with the 1 MM. thick lip support washer on top.
- 2. The back of the double lip seal should be filled with a light grease before fitting with the wiper lip outermost.
- 3. The seal kit, Part No. 86-99-166 is a universal Cassapa motor sealkit. It may contain more seals than are necessary; care must be taken in selecting the correct seal to use.
- Replacing Shaft Seals
- HYDRAULIC HOSES
- Hose Replacement
- 1. Replace one hose at a time to avoid the risk of wrong connections.
- 2. When the hose is screwed to an additional fitting or union, use a second spanner on the union to avoid breaking seals.
- 3. Do not use jointing compound on the threads.
- 4. Avoid twisting the hose. Adjust the hose line to ensure freedom from rubbing or trapping before tightening hose end connections.
- 5. Before changing hoses, study the installation. These should be positioned so that their worm drive barrels are opposed at 180 degrees to reduce the possibility of air entering the system.
- Hose Warranty
- Hose Replacement
- TO THE OWNER/OPERATOR/DEALER
- ALAMO-INDUSTRIAL
- LIMITED 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
- 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.