Hayter T424 Operator's Manual
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Hayter T424 Operator's Manual

Hayter lawn mower operator's manual
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T424
MOWER
CODE 953C
OPERATOR'S MANUAL
THIS MANUAL SHOULD BE REGARDED AS PART OF THE MACHINE, AS
IT GIVES ESSENTIAL INFORMATION REGARDING MACHINE SAFETY,
OPERATION, MAINTENANCE AND SPECIFICATIONS.
English Version
FROM SERIAL NO: 953C001001
MANUAL PART NO: 953910 (REV.0.)
Issue: 01.10.04

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  • Page 1 T424 MOWER CODE 953C OPERATOR'S MANUAL THIS MANUAL SHOULD BE REGARDED AS PART OF THE MACHINE, AS IT GIVES ESSENTIAL INFORMATION REGARDING MACHINE SAFETY, OPERATION, MAINTENANCE AND SPECIFICATIONS. English Version FROM SERIAL NO: 953C001001 MANUAL PART NO: 953910 (REV.0.) Issue: 01.10.04...
  • Page 3 THIS SYMBOL MEANS BE ALERT! YOUR SAFETY IS INVOLVED READ THIS MANUAL BEFORE USING THE T424 MOWER. IT IS ESSENTIAL THAT OPERATORS STUDY IT FOR THEIR OWN SAFETY. ALL OPERATORS SHOULD SEEK AND OBTAIN PROFESSIONAL AND PRACTICAL INSTRUCTIONS ON THE SAFE USE OF THE MOWER. THESE SERVICES ARE AVAILABLE THROUGH HAYTER LIMITED OR HAYTER APPROVED COMMERCIAL DEALERS.

  • Page 4: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS. Training. Preparation. Operation. Handling and storage of fluids. Maintenance and storage. Decals. EC CONFORMITY INFORMATION. Noise levels. EC Declaration of Conformity. INTRODUCTION. SPECIFICATIONS. Engine. Transmission system. Cutterhead drive system. Cutterhead lift system and steering. Hydraulic system. Vehicle specifications. Operator controls.
  • Page 5 CONTENTS Continued. Fuel level gauge. Hourmeter. Transmission neutral indicator light. Cutterhead drive switch indicator light. Parking brake indicator light. Hydraulic return filter indicator light. Hydraulic transmission filter indicator light. Transmission system ‘Work’ mode indicator light. Cutterhead position control. Dual lift configuration control. Cutterhead drive engagement.
  • Page 6 READ THIS MANUAL BEFORE USING THE T424 MOWER, IT IS ESSENTIAL THAT OPERATORS STUDY IT FOR THEIR OWN SAFETY. THE FOLLOWING PRECAUTIONS MUST BE TAKEN TO HELP PREVENT ACCIDENTS. A CAREFUL OPERATOR WHO USES COMMON SENSE IS THE SAFEST OPERATOR.
  • Page 7 SAFETY PRECAUTIONS PREPARATION Continued Ensure that the cutterheads are fully raised with the latches and safety locks engaged in position before transporting the mower. Replace faulty silencers. Check the condition of the tyres and ensure that they are inflated to the correct pressures, refer - SPECIFICATIONS.
  • Page 8 SAFETY PRECAUTIONS OPERATION Continued. Do not use on a slope of more than 19 degrees. Care should be taken when using the mower on any slope where ground conditions are such that there may be a risk of the mower rolling over. The requirements of SI 1998 No.
  • Page 9 SAFETY PRECAUTIONS OPERATION Continued. Watch out for traffic when crossing or near roadways. Use extreme caution when reversing. Disengage the cutterhead drive system before crossing surfaces other than grass. When using the machine, never direct the discharge of material towards bystanders or allow anyone near the machine while in operation.

  • Page 10: Safety Precautions. 1.6

    SAFETY PRECAUTIONS 1.10 HANDLING AND STORAGE OF FLUIDS Hydraulic Oil Avoid contact with eyes and prolonged contact with skin. Protective goggles should be worn when pouring. Use of gloves or barrier cream is recommended. Wash hands thoroughly after contact. Store under cover, away from heat and sources of ignition. Diesel Oil Avoid skin and eye contact.

  • Page 11: Maintenance And Storage

    Health and Safety at Work Act: In accordance with section 6 of the Health and Safety at Work Act 1974, the T424 Turf Mower has been designed and constructed so that, in so far as is reasonably practical, it will not endanger the safety and health of those working with it.

  • Page 12: Decals. 1.12

    SAFETY PRECAUTIONS 1.12 DECALS Decal - Control Panel Part No: 994912 Location: Control Panel. a) Ignition Switch h) Cutters - Off b) Engine Speed - Slow i) Cutters - Forward c) Engine Speed - Fast j) Horn d) Parking Brake - Engage k) Cutters - Lift e) Parking Brake - Disengage l) Cutters - Hold f) Weight Transfer - Control...

  • Page 13: Decals Continued

    SAFETY PRECAUTIONS 1.13 DECALS Continued. Decal - Jacking / Support Point Part No: 70-13-072 Location: Front Axle - 2 Points Rear Towing Eye Jacking and support point Decal - Engine Fan / Radiator Part No: 70-13-073 Location: Engine Fan Cowl a) Danger of severing fingers b) Caution c) Warning - Hot surfaces...
  • Page 14 Location: Next to Platform Latch Warning - Prevent Accidents: Ensure plat- form is correctly seated and the latch is fully locked before operating the machine. Decal - Maintenance T424 Part No. 953812 Location: Underside of Engine Cover next to Latch.

  • Page 15: Ec Conformity Information. 1.15

    Work Regulations' as the operator's daily personal exposure level could be above the 'First Action Level'. EP,d EP,d 1.15 SPELLBROOK, BISHOP’S STORTFORD, HERTS. CM23 4BU. ENGLAND. CODE 953C T424 - TURF MOWER Kg 1750 2004 RPM 2800 kW 35.3 Serial No: 953C001001 Wear Hearing...

  • Page 16: Ec Declaration Of Conformity

    Lawnmower vibration information. Vibration at the operators contact position measured in accordance with European Standards EN 836. - steering wheel does not exceed 2.5ms - at seat does not exceed 0.5ms Ride-on Cylinder Lawnmower T424 Turf Mower Code 953C 346 cm 1050 rpm Kubota...

  • Page 17: Introduction

    A differential lock function may be selected. The Hayter T424 Mower is a precision built machine designed solely for cutting grass and similar low lying ground vegetation within the limitations stated in this manual. Use in any other way is considered as contrary to the intended use.

  • Page 18: Specifications. 1.18

    1.18 SPECIFICATIONS ALL FIGURES ARE NOMINALLY QUOTED AT THE RATED ENGINE SPEED OF 2800 RPM UNLESS OTHERWISE STATED. ENGINE Type: Power Rating: Capacity: Air Cleaner: Cooling System: Battery: Alternator: Starter: Cold Starting: Idle Speed: Fuel Type: Fuel Tank Capacity IMPORTANT: PREVENT DAMAGE - for further information regarding the engine, refer to - ENGINE MANUAL .

  • Page 19: Transmission System

    1.19 TRANSMISSION SYSTEM Drive Type: Pump: Wheel Motors: Differential Lock: Drive: Relief Valve Setting: CUTTERHEAD DRIVE SYSTEM Drive Type: Pump: Delivery Rate: Cutterhead Motors: Control: Relief Valve Settings: SPECIFICATIONS Hydraulic. Variable displacement hydraulic piston pump with integral charge pump servo assisted. Front Axle - ‘Twin Lock’...

  • Page 20: Cutterhead Lift System And Steering

    1.20 CUTTERHEAD LIFT SYSTEM AND STEERING Drive Type: Pump: Delivery Rate: Steering: Cutterhead Lift Control: Wing Units: Relief Valve: Weight Transfer: HYDRAULIC SYSTEM Hydraulic Oil Type: Capacity: Cooling: Suction Line Filtration: Return line Filtration: Transmission Filtration: Cleanliness Level: Maximum Oil Temperature: SPECIFICATIONS Hydraulic.

  • Page 21: Vehicle Specifications

    1.21 VEHICLE SPECIFICATIONS Travel Speed: 0-25 km/h (0-15 mph) forward. 0-11 km/h (0-7 mph) reverse. Tyres Tyre Type Front axle 26 x 12 - 12 4 ply Trelleborg turf pattern. Rear axle 20x10.0-8 4 ply Dico turf pattern. Wheel Nut Torque Setting: Front axle Rear axle Service Brakes: Closed loop hydrostatic service braking operating on front wheels only.

  • Page 22: Operator Controls

    1.22 OPERATOR CONTROLS Steering: Cylinder Drive: Engine Speed: Parking Brake: Forward and Reverse: Ignition: Differential Lock: ‘Work’ or ‘Transport’ modes: Cutterhead Position: Cutterhead Lift Configuration: Horn: Weight Transfer: INSTRUMENTATION Warning Lights: Gauges: Indicator Lights: SPECIFICATIONS Automotive padded steering wheel with adjustable steering column.

  • Page 23: Weight And Dimensions

    1.23 WEIGHT AND DIMENSIONS Wheel Base: Working Width: Cutting Width: Transport Width: Overall Length: Overall Height: Approx. Working Weight: RECOMMENDED LUBRICANTS AND HYDRAULIC FLUIDS Grease Points: A good quality medium grease. Engine: Refer - ENGINE OPERATORS MANUAL. Hydraulic System: Ambient Temperature Range 0 - 30 C (32 - 86 F) I S O viscosity grade 46 hydraulic oil.

  • Page 24: Cutterheads

    1.24 CUTTERHEADS Cutting Width: Cylinder Diameter: Cylinder Speed: Height of Cut: Number of Blades: Smooth Rear Roller: Smooth Front Roller: Grooved Front Roller: Configuration: SPECIFICATIONS MK3 200mm Cutterhead 762 mm. 200 mm. 1050 rpm approx. 12 - 80 mm. 4, 6, 8, 10 Standard.

  • Page 25: Operating The Mower. 1.25

    OPERATING THE MOWER 1.25 SAFETY NOTICE WARNING: PREVENT ACCIDENTS - Before operating the mower it is essential that; - The operator reads and understands this manual. - The operator platform latching mechanism is fully engaged and in good work- ing order, refer - ‘OPERATOR PLATFORM LATCHING MECHANISM’. - The daily maintenance checks have been properly carried out and the turf mower is in good working order.

  • Page 26: Identification Of Controls

    1.26 IDENTIFICATION OF CONTROLS 1. Parking brake lever. 2. Lighting switch (supplied with lighting kit). 3. Warning beacon switch (supplied with beacon kit). 4. Hazard warning switch (supplied with lighting kit). 5. Cutterhead position controls. 6. Throttle control lever. 7. Ignition key. 8.

  • Page 27: Braking System

    OPERATING THE MOWER 1.27 BRAKING SYSTEM Parking Brake : Move the parking brake lever to its rear position to engage the parking brake. Do not operate the mower with the parking brake engaged. WARNING : PREVENT ACCIDENTS - The parking brake operates on the front wheels only.

  • Page 28: Work/Transport Modes

    OPERATING THE MOWER 1.28 WORK/TRANSPORT MODES WARNING : PREVENT ACCIDENTS - Ensure that the mode elected is appropriate to the mode of operation of the machine. Select ‘Work’ mode when operating the mower in conditions of poor traction when maximum tractive per- formance is required.

  • Page 29: Differential Lock

    OPERATING THE MOWER 1.29 DIFFERENTIAL LOCK WARNING : PREVENT ACCIDENTS - Do not engage the differential lock at high speed. The turning circle will increase with the differential lock engaged. The differential lock is effective only when ‘Work’ mode is selected. The differential lock operates in both ‘forwards’...

  • Page 30: Forward Travel Speed Backstop Lever

    1.30 FORWARD TRAVEL SPEED BACKSTOP LEVER The backstop lever can be used to limit the move- ment of the forward pedal for accurate forward trav- el speed, and the clip rate required. Operate the lever in a forward direction to increase the travel speed setting and in a rearward direction to decrease.

  • Page 31: Adjustable Steering Column

    OPERATING THE MOWER 1.31 1.31 ADJUSTABLE STEERING COLUMN WARNING: PREVENT ACCIDENTS - Before operating the mower, ensure that the steering column adjuster mechanism is in good working order and that the steering wheel is locked securely in position. WARNING: PREVENT ACCIDENTS - Adjustment of the steering wheel and steering column should only be carried out when the mower is at a standstill with the parking brake engaged.

  • Page 32: Operator Seat

    OPERATING THE MOWER 1.32 1.32 OPERATOR SEAT WARNING: PREVENT ACCIDENTS - Before operating the mower ensure that the operator seat mechanisms are in good working order and that the seat is locked securely in position. WARNING: PREVENT ACCIDENTS - Adjustment of the seat mechanisms should only be carried out when the mower is at a standstill with the parking brake engaged.

  • Page 33: Warning Systems

    OPERATING THE MOWER 1.33 1.33 WARNING SYSTEMS Engine coolant overheating warning : The engine coolant warning light illuminates and the horn is actuated. Hydraulic oil overheating warning : The hydraulic oil warning light illuminates and the horn is actuated when the hydraulic oil in the reser- voir exceeds 95˚C approx.

  • Page 34: Ignition Key

    OPERATING THE MOWER 1.34 IGNITION KEY = Engine off. I = Engine run / Auxiliary on. II = Engine pre-heat. III = Engine start. WARNING : PREVENT ACCIDENTS - Always remove the ignition key when the mower is not in use.

  • Page 35: Transmission Neutral Indicator Light

    OPERATING THE MOWER 1.35 TRANSMISSION NEUTRAL INDICATOR LIGHT Illuminates when the travel control pedal is in the neutral position and the ignition key is turned to position ‘I’. Note: The parking brake must be engaged for the transmission neutral indicator light to illuminate.

  • Page 36: Cutterhead Position Control

    OPERATING THE MOWER 1.36 CUTTERHEAD POSITION CONTROL The cutterheads may be raised or lowered using the bank of 3 lift control levers. To lower the cutterheads, operate the lift control levers in a downward direction until locked in position 1. If the cutterhead drive switch is in the ‘ON’...

  • Page 37: Cutterhead Drive Engagement

    OPERATING THE MOWER 1.37 CUTTERHEAD DRIVE ENGAGEMENT The cutterhead drive can be engaged only when the operator is seated correctly, refer - OPERATOR PRESENCE CONTROLS. Briefly operate the lift control levers to raise the cutterheads, thereby removing the cutterhead suspension deadweights and wing units stored energy reaction from the transport latch mechanisms.

  • Page 38: Weight Transfer/Traction Assistance

    OPERATING THE MOWER 1.38 WEIGHT TRANSFER / TRACTION ASSISTANCE A variable hydraulic weight transfer system is provided for improving tyre grip with the grass surface - ‘Traction Assistance’. Hydraulic pressure in the cutterhead lift system provides a lifting force which reduces cutterhead weight on the ground and transfers the weight as a downward force onto the mower’s tyres.

  • Page 39: Starting The Engine. 1.38

    OPERATING THE MOWER 1.39 STARTING THE ENGINE Starting a cold engine: Set the throttle control lever to approximately 70% full throttle. Turn the ignition key to the ‘ignition on’ position "I" and check that the engine oil pressure and battery charge warning lights illuminate. Turn the ignition key to the ‘preheat’...

  • Page 40: General Operating Hints

    1.40 GENERAL OPERATING HINTS The rotational speed of the cutting cylinders should always be kept as high as possible in order to maintain the highest quality of cut. This in turn requires that the engine speed be kept as high as possible.

  • Page 41: Unblocking Cutting Cylinders

    OPERATING THE MOWER 1.41 UNBLOCKING CUTTING CYLINDERS WARNING: PREVENT ACCIDENTS - Before attempting to clear any blockage from the cutting cylinders on this machines ensure all of the following: - Stop the machine on level ground. - Apply the parking brake and disengage all drives. - Lower the cutting units to the ground or securely lock in the designated transport positions.

  • Page 42: Cutterhead General Information

    OPERATING THE MOWER 1.42 1.42 CUTTERHEAD GENERAL INFORMATION The mower is designed to be used with MK3 200mm fixed or floating cutterheads or MK3 254mm fixed cutterheads. It is essential that the relationship between the bottom blades and the cutting cylinders are kept in good adjustment and that cutting edges are kept sharp to ensure good cutting performance, minimum power consumption and prolonged life for the cutting edges, refer - MAINTENANCE - Cutterheads.

  • Page 43: Mk3 200Mm Fixed Cutterhead

    OPERATING THE MOWER 1.43 MK3 200mm FIXED CUTTERHEAD Height of cut adjustment: The height of cut is gauged by the position of the rear roller. Turn the adjusting nut assembly ‘B’ both ends clockwise to decrease height of cut ‘E’ or anti-clockwise to increase height of cut ‘E’.

  • Page 44: Mk3 200Mm Floating Cutterhead

    OPERATING THE MOWER 1.44 1.44 MK3 200mm FLOATING CUTTERHEAD Pivot knuckle fixing: Secure the bolt in the rear “floating” slot position ‘A’ as shown. 1D876P07A Height of cut adjustment: The height of cut is gauged by the position of the front and rear rollers. To alter the rear roller position, turn the adjusting nut assembly ‘B’...
  • Page 45 - The safety precautions in this manual have been read and understood. WARNING : PREVENT ACCIDENTS - Stored energy devices and systems are used on the T424 mower. It is essential that this stored energy is safely dissipated before maintenance or other service or operations are performed on these devices and systems on the machine.

  • Page 46: Maintenance

    1.46 MAINTENANCE Continued. WARNING : PREVENT ACCIDENTS - Use hazardous substances carefully. The following fluids are identified as being hazardous; Substances Diesel oil Lubricating oil Hydraulic oil Grease Anti - freeze Battery acid When using any of the above fluids it is recommended that eye protection and gloves are worn and that care is taken to prevent spillage.

  • Page 47: Engine

    1.47 ENGINE Refer to the Engine Operator's Manual for maintenance information. RUNNING IN PERIOD Check wheel nut torque settings: During first 50 hours of use and in addition to routine checks. Refer - DAILY AND BEFORE USE. Check wheel nut torques twice a day. Front axle wheel nut torque setting - 200 Nm.

  • Page 48: Running In Period - At First 50 Hours. 1.47

    1.48 RUNNING IN PERIOD - AT FIRST 50 HOURS Change the hydraulic oil return filter: Unscrew and remove the return filter canister and discard. Refit a new filter canister (Hayter part no. 924692). Left Hand Side of Machine MAINTENANCE Continued. 1P953C16A 1.

  • Page 49: Daily And Before Use. 1.49

    1.49 DAILY AND BEFORE USE Check engine oil level: If the oil level is below the upper mark on the dipstick, top up with the correct grade of engine oil to the required level, refer - ENGINE MANUAL. Check engine radiator coolant level: WARNING: PREVENT ACCIDENTS - Avoid scalding.
  • Page 50 1.50 DAILY AND BEFORE USE Clean the radiator screen: Clean the radiator screen. Check the oil cooler and engine radiator grille for debris and clean as necessary, using a brush or airline. If water is used, these areas should be allowed to dry out completely before use. IMPORTANT: PREVENT DAMAGE - NEVER operate the mower with a damaged radiator screen or engine damage could result from overheating.
  • Page 51 1.51 DAILY AND BEFORE USE Check hydraulic hose-lines: Inspect hydraulic hose-lines for signs of wear or damage. WARNING: PREVENT ACCIDENTS - ALWAYS replace worn or damaged hydraulic hose-lines immediately. DO NOT operate the mower with defective hydraulic hose-lines. Inspect the mower for signs of oil leakage. Tighten fittings or replace seals as required. Check fasteners: Check that all nuts, bolts and pins are secured correctly in place and in good condition.
  • Page 52 MAINTENANCE 1.52 1.52 DAILY AND BEFORE USE Continued. Check operator presence controls: WARNING : PREVENT ACCIDENTS - Keep bystanders away when checking operator presence control interlock switches. DO NOT use the mower unless the operator presence con- trols work correctly as described below. If difficulties arise, consult your "Hayter dealer”. Operator presence seat switch: Sit on the operator seat and start the engine.

  • Page 53: Every 50 Hours

    MAINTENANCE 1.53 1.53 EVERY 50 HOURS Perform routine checks : Refer - DAILY BEFORE USE. Check cutterhead roller bearing adjustment: IMPORTANT : PREVENT DAMAGE - It is essential that the cutterhead roller bearings are kept in good adjustment in order to ensure maximum working life. If end float is allowed to become excessive, premature bearing failure will result.
  • Page 54 1.54 EVERY 50 HOURS Grease pivot points : Clean and grease all grease points with a good quality compound of the grade specified, refer - SPECIFICATIONS. Replace any grease nipples which are damaged. Grease all cutterhead grease points and ensure that sufficient grease is injected such that clean grease is seen to escape from the roller end caps.

  • Page 55: Every 250 Hours

    1.55 EVERY 250 HOURS Perform routine checks : Refer - DAILY BEFORE USE. - EVERY 50 HOURS. Check battery condition : WARNING : PREVENT ACCIDENTS - Explosive gases are produced by the battery. Work in a well ventilated area, away from all sources of ignition. Battery fluids are corrosive.

  • Page 56: Every 500 Hours

    1.56 EVERY 500 HOURS Perform routine checks : refer Thoroughly clean the machine: IMPORTANT: PREVENT DAMAGE - Keep water away from electrical components. Use a dry cloth or brush to clean such areas. Service the hydraulic system : This procedure is best carried out when the hydraulic oil is warm (not hot).
  • Page 57 1.57 EVERY 500 HOURS Renew the engine air cleaner filter: Check the condition of the air cleaner hoses. Replace any hose which is damaged and tighten the connections, refer - ENGINE MANUAL. Renew the engine fuel filter element: Refer - ENGINE MANUAL. Check electrical system: Inspect all electrical connections and cables and replace any which are damaged or corroded.
  • Page 58 1.58 EVERY 500 HOURS Check the engine overheat warning system: Turn the ignition key to the ‘ignition on’ position 'I'. Disconnect the red/grey wire terminal from the engine temperature switch and touch the metal terminal of this wire onto a suitable earth point, ensuring that the metal surfaces make good contact. The horn will sound and the engine coolant temperature warning light will illuminate to confirm correct operation.

  • Page 59: Cutterhead Cylinder To Bottom Blade Adjustment

    MAINTENANCE 1.59 1.59 CUTTERHEAD CYLINDER TO BOTTOM BLADE ADJUSTMENT IMPORTANT : PREVENT DAMAGE - It is essential that the relationship between the bottom blades and the cutting cylinders is kept in good adjustment in order to ensure good cutting performance, minimum power consumption and prolonged life for the cutting edges.

  • Page 60: Cutterhead Backlapping

    1.60 CUTTERHEAD BACKLAPPING This process is recommended for restoring the sharp cutting edges to cylinders and bottom blades which are essential for good quality grass cutting. This process can only deal with a small amount of metal removal to restore the cutting edges.

  • Page 61: Cutterhead Grinding

    MAINTENANCE 1.61 1.61 CUTTERHEAD GRINDING It will be necessary to carry out a grinding operation to correct cylinder spiral edges or bottom blade edges which have become excessively rounded or distorted. Bottom blades which are nearing the end of their wear life should be replaced. The new blades should be ground on their holders prior to fitting, refer - CUTTERHEAD BOTTOM BLADE REPLACEMENT.

  • Page 62: Raising The Mower Off The Ground

    1.62 RAISING THE MOWER OFF THE GROUND WARNING: PREVENT ACCIDENTS - Before raising the mower ensure that: The lifting device to be used is in good condition and capable of supporting the weight of the mower securely. Minimum lift capacity 2000 Kg. The mower is on level ground.

  • Page 63: Towing The Mower. 1.63

    1.63 TOWING THE MOWER Towing procedure : Connect a rigid tow bar between the towing eye on the mower and a suitable towing vehicle. Ensure that the towing vehicle specification is suited to braking the combined vehicle weight to rest whilst effecting complete control at all times. Ensure that the towing vehicle’s parking brake is applied.
  • Page 64 1.64 TOWING THE MOWER De-commission the hydraulic service braking system as follows:- Open the transmission bypass valve situated as shown on top of the transmission pump. The valve is fully open at 3 anti-clockwise revolutions. Do not open the valve past 3 revolutions. The steering must be operated manually when the mower is being towed.
  • Page 65 GRASS CUTTING FAULTS 1.65 GRASS CUTTING FAULTS FAULT POSSIBLE CAUSE Areas of uncut grass at Turning too tightly. point of overlap between cutting cylinders. Mower sliding sideways when travelling across face of a slope. One end of cutterhead out of ground contact caused by: Ridge lines in the cut Forward speed too high.

  • Page 66: Grass Cutting Faults. 1.65

    1.66 GRASS CUTTING FAULTS POSSIBLE CAUSE FAULT Some uncut or poorly Cutting cylinder is partially cut strands of grass.. out of contact with the bottom blade. Cutting cylinder is in heavy contact with the bottom blade. Height of cut is too high.
  • Page 67 1.67 GRASS CUTTING FAULTS POSSIBLE CAUSE FAULT Excessive bottom blade Bottom blade in heavy wear.. ground contact. Cutting edges of the cutting cylinder/bottom blade are rounded. Cylinder is in heavy contact with the bottom blade. Damaged cutting cylinder or bottom blade. Excessively abrasive ground conditions.
  • Page 68 TROUBLE SHOOTING 1.68 TROUBLE SHOOTING When using the following chart it may be found that overhaul of major components or hydraulic pressure adjustments are necessary. In this case it is recommended that your dealer make these repairs as he is properly equipped to do this work. WARNING: PREVENT ACCIDENTS - ALWAYS Apply the parking brake, switch off the engine and remove the ignition key before attempting to work on the mower.
  • Page 69 1.69 TROUBLE SHOOTING PROBLEM POSSIBLE CAUSE Differential lock Defective switch. non operational. Defective solenoid valve. Defective wiring. Hydraulic oil sys- Blocked radiator tem overheating. screen. Blocked oil cooler fins. Blocked engine radiator matrix. Low relief valve setting. Low oil level. Brakes engaged.
  • Page 70 TROUBLE SHOOTING 1.70 TROUBLE SHOOTING PROBLEM Lack of transmission drive. Forward/backward transmission creep in neutral. Work/transport modes non-oper- ational Lack of steering. Continued. POSSIBLE CAUSE Parking brake engaged. Low oil level. Incorrect oil used. Defective travel pedal linkage. Defective transmission pump.
  • Page 71 1.71 TROUBLE SHOOTING PROBLEM Excessive noise in hydraulic system. TROUBLE SHOOTING Continued. POSSIBLE CAUSE Faulty pump. Faulty motor. Air leaking into system. Suction strainer blocked or damaged. Excessive oil viscosity due to cold conditions. Low relief valve setting. Low hydraulic oil level. 1.71 REMEDY Identify noisy pump...
  • Page 72 TROUBLE SHOOTING 1.72 TROUBLE SHOOTING PROBLEM POSSIBLE CAUSE After initial satisfactory Worn pump or motor. operation machine loses power. Low hydraulic oil level. Incorrect oil viscosity. Oil filter element blocked. Faulty pressure relief valve. Overheating. Leaks on suction hose. Cylinder "knocks" while High spot on cylinder or bottom blade due to rotating.

  • Page 73: Trouble Shooting. 1.68

    1.73 TROUBLE SHOOTING PROBLEM One cylinder rotates slowly. Cutterhead fails to lift out of work. Cutterheads do not follow ground contours. TROUBLE SHOOTING Continued. POSSIBLE CAUSE Cutting cylinder bearing seized. Incorrect rotation motor fitted. Diverter valve only partly open. Motor integral check valve jammed open.
  • Page 74 TROUBLE SHOOTING 1.74 TROUBLE SHOOTING PROBLEM Cutterheads fail to start up when lowered into work. Cylinders rotate in wrong direction. Continued. POSSIBLE CAUSE Faulty seat sensor switch. Low oil level. Diverter valve jammed. Sheared drive shaft. Pressure relief valve jammed open or wrongly set.

  • Page 75: Electrical Circuit Diagram. 1.75

    ELECTRICAL CIRCUIT DIAGRAM 1.75 1.75 953910KG141004...
  • Page 76 ELECTRICAL CIRCUIT DIAGRAM 1.76 ITEM NO. DESCRIPTION Switch - Parking Brake Interlock. Glow Plug Timer. Light - Parking Brake. Light - Glow Plugs. Light - Neutral. Light - Cutterhead Drive Off. Light - Return Filter. Light - Pressure Filter. Light - Battery Warning. Light - Engine Oil Pressure.
  • Page 77 ELECTRICAL CIRCUIT DIAGRAM 1.77 1.77 953910KG141004...
  • Page 78 ELECTRICAL CIRCUIT DIAGRAM 1.78 ITEM NO. DESCRIPTION Alternator/Regulator. Engine Temperature Sender (supplied with temp kit). Glow Plugs. Switch - Engine Overheat. Solenoid - Fuel Engine. Hourmeter. Switch - Return filter. Solenoids - Work/Transport Mode. Fuse - Engine Glow plugs 60A Fuse - Main 60A Diode - Parking Brake Diode - Seat Switch...

  • Page 79: Transmission/Brake Hydraulic Circuit. 1.79

    TRANSMISSION / BRAKE - HYDRAULIC CIRCUIT 1.79 1.79 953910KG141004...
  • Page 80 TRANSMISSION / BRAKE - HYDRAULIC CIRCUIT 1.80 ITEM NO. DESCRIPTION Motor - Front Wheel Twinlock - 332cc/Rev Motor - Front Wheel Twinlock - 332cc/Rev Manifold - Front Transmission Valve - Solenoid - Work/Transport Valve - Pilot Operated - Diff Lock Relief Valve - Serial Lines - 80 bar Valve Solenoid - Diff Lock Relief Valve - Front Motor - 375 Bar...

  • Page 81: Hydraulic Circuit Diagram. 1.81

    HYDRAULIC CIRCUIT DIAGRAM 1.81 1.81 953910KG141004...
  • Page 82 HYDRAULIC CIRCUIT DIAGRAM 1.82 ITEM NO. DESCRIPTION Gear pump - Centre Cutterhead Drive. Gear pump - Wing Cutterhead Drive. Gear pump - Steering and Cutterhead Lift Relief Valve - Steering 110 bar Steering Unit Check Valve - Steering Shock Bypass R.H. Check Valve - Steering Shock Bypass L.H.

  • Page 83: Warranty

    WARRANTY 1.83 1.83 WARRANTY HAYTER LIMITED warrants to the original user / purchaser that this unit shall be free from defects in material and workmanship for a period of 12 calendar months from the date of delivery. This warranty excludes proprietary items which have the benefit of the supplying manufacturer’s warranty. Engine manufacturers furnish their own warranties and provide services through their authorised network.

  • Page 84: Notes

    NOTES 1.84 1.84 953910KG141004...

  • Page 85: Customer Information

    CUSTOMER INFORMATION 1.85 1.85 MACHINE DETAILS Model: Machine Serial No.: Engine Serial No.: Cutterhead Serial No.s: Transmission Pump Serial No.: Transmission Valve Block Front Serial No.: Cutter Control Valve (Front & Centre) Serial No.: Cutter Control Valve (Wing) Serial No.: 953910KG141004...

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