Summary of Contents for McConnel PA 48
- Page 1 Publication 469 PA 48 December 2004 Part No. 41570.69 HEDGE/GRASS CUTTER Operator Manual...
- Page 3 UK DEALER WARRANTY INFORMATION & REGISTRATION VERIFICATION It is imperative that the selling dealer registers this machine with McConnel Limited within 7 days of delivery to the end user – failure to do so may affect the validity of the machine warranty.
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Page 5: Ec Declaration Of Conformity
The Machinery Directive is fully implemented into UK law by means of the Supply of Machinery (Safety) Regulations 1992 (SI 1992/3073) as amended by The Supply of Machinery (Safety) (Amendment) Regulations 1994 (SI 1994/2063). Signed …………………………..…………………………………………………….…….. on behalf of McCONNEL LIMITED Responsible Person Chief Design Engineer November 2004... - Page 6 The Machinery Directive is fully implemented into UK law by means of the Supply of Machinery (Safety) Regulations 1992 (SI 1992/3073) as amended by The Supply of Machinery (Safety) (Amendment) Regulations 1994 (SI 1994/2063). Signed …………………………..…………………………………………………….…….. on behalf of McCONNEL LIMITED Responsible Person Chief Design Engineer November 2004...
- Page 7 READ THE BOOK FIRST It might save hours and pounds later ! When ordering spare parts always quote • The Machine Type • The Machine Serial Number • The Part Number Factory re-built service exchange units of the major hydraulic components are available from your Dealer NOISE The equivalent daily personal noise exposure from this machine, measured at the operators’...
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Page 8: Table Of Contents
LIST OF CONTENTS Page No. GENERAL INFORMATION INTRODUCTION SAFETY INFORMATION FITTING - Tractor Selection Linkage Requirements Linkage Isolation Check Chains/Stabilsers Tractor Relief Valve Tractor Hydraulic Flow Rates PTO Shaft Tractor Preparation Operator Guard Fitting Wheel Width Ballast Weight Lift Links Closed Centre Conversion Kit –... - Page 9 LIST OF CONTENTS (Continued) Page No. Hedge Cutting Procedure Preliminary Precautions Upward Cutting Downward Cutting Reversing Rotation – SI Models Reversing Rotation – TI Models Grass Cutting Roller Positions Hedge Cutting sequence Lift Float Kit – Optional Extra Angle Float – Optional Extra on Electric Models only MAINTENANCE Lubrication General...
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Page 10: General Information
Read this manual before fitting or operating the machine. Whenever any doubt exists contact your dealer or the McConnel Service Department for assistance. Use only McConnel Genuine spare parts on McConnel equipment and machines. DEFINITIONS - The following definitions apply throughout this manual: WARNING An operating procedure, technique etc., which can result in personal injury or loss of life if not... -
Page 11: Introduction
– INTRODUCTION Model Specifications PA48 SERIES – All Models Linkage Mounted. Right or Left Hand Cutting. 1.2M Heavy Duty Flailhead - Hedge or Grass. Spring assisted gravity breakaway. Operator Guard. 41 gallon (187 litre) Hydraulic Reservoir. PA48 SI Models Semi Independent Hydraulics (Tractor powers the arm movements, PTO pump powers the rotor). -
Page 13: Safety Information
SAFETY INFORMATION This machine has the potential to be extremely dangerous, in the wrong hands it can kill or maim. It is therefore imperative that the owner, and the operator of this machine, read the following section to ensure that they are both fully aware of the dangers that do, or may exist, and their responsibilities surrounding its use. - Page 14 BEFORE USING THIS MACHINE YOU MUST: ● Ensure you read all sections of the operator handbook. ● Ensure the operator is, or has been, properly trained to use the machine. ● Ensure the operator has been issued with and reads the operator handbook. ●...
- Page 15 ● Always clear up all debris left at the work area, it may cause hazard to others. ● Always ensure when you remove your machine from the tractor that it is left in a safe and stable position using the stands and props provided and secured if necessary. WHEN NOT TO USE THIS MACHINE: ●...
- Page 16 We advise therefore that the prospective operator make use of relevant training courses available such as those run by the Agricultural Training Board, Agricultural Colleges, Dealers and McConnel. Working in Public Places When working in public places such as roadsides, consideration should be paid to others in the vicinity.
- Page 17 VEHICLE/ TRACTOR PREPARATION We recommend vehicles are fitted with cabs using ‘safety glass’ windows and protective guarding when used with our machines. Fit Operator Guard (part no. 73 13 324) using the hooks provided. Shape mesh to cover all vulnerable areas. Remember the driver must be looking through mesh and/or polycarbonate glazing when viewing the flail head in any working position - unless the vehicle/ cab manufacturer can...
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Page 18: Fitting - Tractor Selection
FITTING – Tractor Selection Linkage requirements The Power Arms will fit almost any tractor with a category II linkage. Linkage isolation A linkage isolation facility is necessary for SI models only. Check chains/stabilisers Check chains or stabiliser bars must be fitted and tightened. Tractor relief valve For Si models only tractor relief valve must be set above 2000 psi (140 bar) Tractor hydraulic flow rate... -
Page 19: Tractor Preparation
TRACTOR PREPARATION Fitting Operator Guard tractor with safety glass windows and fit Operator guard (part no. 73 13 324) using the hooks provided. Shape mesh to cover all vulnerable areas. Remember the driver must be looking through mesh at the flail head in any working position. -
Page 20: Closed Centre Conversion Kit - Si Models
CLOSED CENTRE CONVERSION KIT - SI Models only A Control Valve Conversion Kit (Part No. 8130059) consists of a relief valve-blanking plug, which should be installed in place of the existing relief valve, and a pressure gallery blanking plug, which is installed in place of the standard blanking plug at the valve outlet end next to the lift ram gland connection. -
Page 21: Oil Requirements
OIL REQUIREMENTS Tank Fill the reservoir to approximately 2” (50mm) below the top of the tank. The tank capacity is 187 Litres (approx. 41 imp. Gallons) - Do not overfill the tank Supplier Cold or temperate climate Hot climate Agricastrol hydraulic oil CASTROL Hy-spin AWS 68 Hy-spin AWS 46... -
Page 22: Delivery
DELIVERY 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 * Cut the banding straps and remove loose items. On mid-cut machines the front hood must be bolted to the flail head. - Page 23 * At this point check that the welded in pins between the jaws of the yoke are tightly against the top of the mounting rail - If the welded in pins are not in contact with the rail the machine must be lowered to the ground, the next hole on the yoke top link lug selected,the machine raised again and contact checked.
- Page 24 * Remove the rope arrestor loop. 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. Remove the parking feet, turn inward 90 degrees and re-locate in their housings.
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Page 25: Fitting Control Unit In Cab
FITTING CONTROL UNIT IN CAB A bracket is clamped between the seat runners and their mounting base. Attached to this is a stalk, which carries the control units. Modification to either may be necessary to achieve a comfortable working position. On tractors other than the quiet cab models the stalk can be bent and bolted to the mudwing or the cladding of the cab ensuring that no structural member. - Page 26 Cable Controlled Models The control unit is bolted to an angled mounting bracket in either a transverse or longitudinal position thus giving a variety of mounting positions, which in conjunction with the flexibility of the mounting pillar will enable a satisfactory working position to be achieved. In deciding the final position of the control box remember not to exceed the minimum acceptable bend radii of 8"...
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Page 27: Running Up Procedure
RUNNING UP PROCEDURE TI models only Ensure that the rotor control valve is in "STOP" position, start tractor, engage P.T.O. allow the oil to circulate through the return line filter for about 5 minutes without operation of the armhead control lever. Operate the armhead levers through their complete range ensuring that all movements are functioning correctly. -
Page 28: Removal From Tractor
REMOVAL FROM TRACTOR DANGER READ CAREFULLY BEFORE COMMENCING TO REMOVE THE MACHINE FROM THE TRACTOR THE ORDER OF THE FOLLOWING STEPS MUST BE FOLLOWED EXACTLY DISCONNECTING THE TOP LINK MUST BE THE LAST OPERATION PRIOR TO DRIVING THE TRACTOR AWAY FROM THE MACHINE W A R N I N G Do not operate quadrant lever or machine controls through the rear cab window whilst standing on or amongst linkage components - ALWAYS SEEK ASSISTANCE. -
Page 29: Operation
OPERATION Material Thickness Cutting Limitations OPERATOR GUARD – Refer to page 8. PREPARATION Read the book first. Practice in an open space without the rotor running until familiar with controls. CAUTION: Take care when working with the flail head close in as it can hit the tractor. -
Page 30: Machine Controls
MACHINE CONTROLS NOTE: For SI Models tractors linkage will need to be isolated CABLE CONTROLS ELECTRIC SWITCHBOX CONTROLS... -
Page 31: Machine Controls - Arm & Head Movement
MACHINE CONTROLS – Arm & Head Movement HEAD ANGLE FLOAT (Optional Extra) An angle ‘float’ position can be selected which allows the flail head to automatically angle itself to the contours of the ground. To obtain this position the control lever must be pushed away from the operator beyond its normal range until it locks into the float position. -
Page 32: Electric Monolever Controls
ELECTRIC MONOLEVER CONTROLS PROPORTIONAL ELECTRIC CONTROLS... -
Page 33: Machine Controls - Arm & Head Movement
MACHINE CONTROLS – Arm & Head Movement HEAD ANGLE FLOAT (Optional Extra) Operation – Electric Controlled Machines (For Cable controlled machines see page 22) An angle ‘float’ position can be selected which allows the flail head to automatically angle itself to the contours of the ground. -
Page 34: Rotor Control
ROTOR CONTROL – SI models Rotor ON/OFF is controlled by operation of the tractors PTO lever. To START rotor: Bring tractor engine revs up to 1000 rpm. Engage PTO. To STOP rotor: Disengage PTO. WARNING Do not leave tractors seat until the rotor is stationary. ROTOR CONTROL - TI models... -
Page 35: Moving Into The Transport Position
MOVING INTO THE TRANSPORT POSITION When transporting on the highway the arms should be latched securely in the broken back position and the white tap on the lift ram screwed fully in. To achieve this position angle the flail head and place one corner of it on the ground. Raise the latch;... -
Page 36: Rotor Operating Speed
ROTOR OPERATING SPEED TRACTOR FORWARD SPEED HIGHWAY WORKING Local highway working regulations must be observed at all times. WARNING It is the operators’ responsibility to observe these regulations and to ensure that all bystanders are kept at a safe distance at all times. -
Page 37: Working Practices
GENERAL WORKING PRACTICES It is the operators’ responsibility to develop, and adhere to, safe working practices. ALWAYS: Be aware of hazards in the vicinity Make sure all guards are in position and in good condition. Disengage P.T.O. before stopping the engine. Wait until the flail has stopped running before leaving the tractor seat. -
Page 38: Wire Trap
WIRE TRAP Both flail hoods are equipped with a ‘wire cutting edge’ welded into the underside – this plate should not be interfered with or modified in any way. Any wire caught in the rotor must be removed immediately. REMOVING WIRE Select rotor ‘OFF’... -
Page 39: Hedge Cutting Procedure
HEDGE CUTTING PROCEDURE Preliminary Precautions ALWAYS inspect the work area beforehand and remove any hazardous objects or materials. Note the location of any immovable obstructions in order that they will be avoided whilst working the machine. ROTOR DIRECTION – Upward & Downward Cutting Upward Cutting Front Hood and Rear Flap must always be in... -
Page 40: Reversing Rotation - Si Models
REVERSING ROTATION OF ROTOR SI Models Fully extend the armhead and lower flail to the ground to minimise oil loss. Release the hoses from the flail motor rigid pipes or the rotor control valve and interchange. Do not interchange the flail supply and return hoses at any other point as the hose routing and cross overs in the installation are necessary to allow the hoses to flex correctly during arm movements. -
Page 41: Roller Positions
ROLLER POSITION... -
Page 42: Hedge Cutting Sequence
HEDGE CUTTING SEQUENCE... -
Page 43: Lift Float Kit - Optional Extra
LIFT FLOAT KIT (Optional Extra for Ground Cutting) The hydraulic float kit, if fitted, should be mounted as shown clamped to the lift ram barrel – see illustration below. On electric controlled machines the cable from the poppet valve solenoid is connected to the lift float switch on the switchbox. -
Page 44: Angle Float - Optional Extra On Electric Models Only
FLOATING HEAD ANGLE FACILITY (Optional Extra for Electric Machines) This facility will allow the flail head to angle itself automatically to suit the contours of the ground – selection of ‘angle float’ on the controls activates it. The kit is bolted in position as shown in the diagram above. Note: the ‘O’ Rings from the hose plate must be extracted carefully and re-used. -
Page 45: Maintenance
MAINTENANCE LUBRICATION General Grease daily all points shown. Power Take-Off Shaft The PTO Shaft and its guards should be regularly examined. The universal joints should be greased very sparingly i.e. one shot weekly. Note: Over greasing a universal joint will ‘blow-out’ the cork or neoprene sealing rings that exclude the dirt from the needle bearings inside. -
Page 46: Hydraulic System
HYDRAULIC SYSTEM Oil supply Check the oil level in the reservoir daily. No fixed time period can be quoted for oil changes as operating conditions and maintenance standards vary so widely. Burnt and scorched oil odours and the oil darkening and thickening are all signs of oxidation and indicate the oil should be changed. -
Page 47: Flail Head
FLAIL HEAD 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 Ibf/ft.). Use only the correct flail bolt and locking nut. Check the flail pivot bushes for possible damage or wear - they do not require oil. -
Page 48: Hydraulic Hoses
HYDRAULIC HOSES The condition of all hoses should be carefully checked during routine service of the machine. Hoses that have been chafed or damaged on their outer casing should be securely wrapped with waterproof adhesive tape to stop the metal braid from rusting. Hoses that have suffered damage to the metal braid should be changed at the earliest opportunity. -
Page 49: Hose Connections
HOSE CONNECTIONS – Cable Models Main Control Valve A - Supply B - Return (TI version illustrated) C – Lift Base (Restrictor A) D – Lift Gland E – Reach Base (Restrictor C) F– Reach Gland (Restrictor C) G – Angle Base (Restrictor A) H –... -
Page 50: Main Control Valve - Electric Models
HOSE CONNECTIONS – Electric Models Main Control Valve A – Supply B – Return C – Lift Base (Restrictor L) D – Lift Gland E – Reach Base (Restrictor L) F – Reach Gland (Restrictor S) G – Angle Base (Restrictor S) H –... -
Page 51: Rotor Valves
ROTOR CONTROL & ROTOR RELIEF VALVES A – Supply from Pump D – Motor Lower B – Return to Tank E – Return from Main Valve C – Motor Upper... -
Page 52: Debris Blower
DEBRIS BLOWER KIT (Optional Extra) The Debris Blower is a hydraulically powered, mechanically adjustable, ‘blower’ unit for the clearance of hedge or grass cuttings from the highway during work with the machine. The Debris Blower unit is attached to the machine by means of a bracket assembly fitted to the base of the machines hydraulic tank onto which the Debris Blower is then bolted.