Komatsu Utility SK714-5 Operation & Maintenance Manual
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Komatsu Utility SK714-5 Operation & Maintenance Manual

Skid-steer loader, serial number 37af00004 and up
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Operation & Maintenance
Manual
WARNING
Unsafe use of this machine may cause serious injury
or death. Operators and maintenance personnel
must read this manual before operating or maintain-
ing this machine.
This manual should be kept inside the cab for refer-
ence and periodically reviewed by all personnel who
will come into contact with the machine.
SK714
SKID-STEER LOADER
SERIAL NUMBER
SK714-5 37AF00004
WEAM003301
-5
and up

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Summary of Contents for Komatsu Utility SK714-5

  • Page 1 WEAM003301 Operation & Maintenance Manual SK714 SKID-STEER LOADER SERIAL NUMBER SK714-5 37AF00004 and up WARNING Unsafe use of this machine may cause serious injury or death. Operators and maintenance personnel must read this manual before operating or maintain- ing this machine.

  • Page 3: Foreword

    FOREWORD 1.1 FOREWORD • This manual is supplied by Komatsu Utility S.p.A. in order to provide customers with all the necessary informa- tion on the machine and the safety regulations related to it, together with the use and maintenance instructions that enable the operator to exploit the capacity of the machine with optimal results and to keep the machine effi- cient over time.

  • Page 4: Information On Safety

    Komatsu Utility cannot reasonably predict every circumstance that might involve a potential hazard during the op- eration or maintenance of the machine; for this reason, the safety messages included in this manual and applied on to the machine plates may not include all possible safety precautions.
  • Page 5 INFORMATION ON SAFETY DANGER • It is strictly forbidden to modify the setting of the hydraulic system safety valves; Komatsu Utility cannot be held liable for any damage to persons, property or the machine, if this has been tampered with by modifying the standard setting of the hydraulic system.

  • Page 6: Introduction

    1.3 INTRODUCTION 1.3.1 INTENDED USES The Komatsu Utility MACHINES described in this manual have been designed and constructed to be used by duly trained personnel mainly for EXCAVATION and EARTH-MOVING OPERATIONS. If provided with suitable safety devices, they can be used with authorized optional equipment having the character- istics illustrated at point “6.1 AUTHORIZED OPTIONAL EQUIPMENT”.

  • Page 7: Main Characteristics

    INTRODUCTION 1.3.3 MAIN CHARACTERISTICS • Simple and easy operation. • Hydrostatic transmission obtained through a double variable displacement pump and axial piston motors operat- ing epicyclic reduction gears. • Four driving wheels always engaged through oil-immersed roller chains. • Main equipment and travel control through servo levers ensuring also combined movements that can be modu- lated proportionally and continually.

  • Page 8: Product Identification

    PRODUCT IDENTIFICATION 1.4 PRODUCT IDENTIFICATION The Komatsu Utility COMPACT LOADER and its main components are identified by serial numbers stamped on the identification plates. The serial number and the identification numbers of the components are the only numbers that must always be in- dicated to the Dealer when requiring assistance and ordering spare parts.

  • Page 9: Engine Serial Number And Exhaust Gas Emission Plate

    MASSA MAX ASSE ANT. - MAX WEIGHT FRONT AXLE ZUL. ACHSLAST VORN - POIDS MAX ESSIEU AV MASSA MAX ASSE POST. - MAX WEIGHT REAR AXLE ZUL. ACHSLAST HINTEN - POIDS MAX ESSIEU AR MANUFACTURED BY KOMATSU UTILITY EUROPE S.p.A. 36025 NOVENTA VICENTINA (VI) ITALY 21D-98-12580 RWA34270 MODEL...

  • Page 10: Cab Serial Number

    PRODUCT IDENTIFICATION 1.4.5 CAB SERIAL NUMBER The cab serial number is stamped on the plate positioned on the right side of the base cross member. RWAA9680 1.4.6 EXCAVATOR IDENTIFICATION PLATE (if installed) The excavator identification number is stamped on the plate posi- tioned on the left side of the control panel.

  • Page 11: Serial Numbers And Dealer's Address

    PRODUCT IDENTIFICATION 1.4.7 SERIAL NUMBERS AND DEALER’S ADDRESS Machine N° Model Engine N° Travel reduction gear N° Cab N° Excavator (if installed) N° Dealer: Address: Tel. Person to contact: NOTES:...

  • Page 12: Table Of Contents

    TABLE OF CONTENTS Page TABLE OF CONTENTS FOREWORD ..............INFORMATION ON SAFETY .
  • Page 13 TABLE OF CONTENTS Page PRECAUTIONS TO BE TAKEN WHEN WORKING ........2.4.1 STARTING THE ENGINE .
  • Page 14 TABLE OF CONTENTS Page DESCRIPTION AND USE OF THE MACHINE SAFETY LOCKS ..............3.1.1 LOADER LOCKS .
  • Page 15 TABLE OF CONTENTS Page PARKING THE MACHINE ............3.7.1 PARKING ON LEVEL GROUND .
  • Page 16 TABLE OF CONTENTS Page MAINTENANCE GUIDE TO MAINTENANCE ............MAINTENANCE NOTES .
  • Page 17 TABLE OF CONTENTS Page 4.7.6 MAINTENANCE EVERY 250 HOURS OF OPERATION ......4.7.6.a ADJUSTING THE FAN BELT TENSION .
  • Page 18 TABLE OF CONTENTS Page AUTHORIZED OPTIONAL EQUIPMENT AUTHORIZED OPTIONAL EQUIPMENT ..........6.1.1 PRECAUTIONS REGARDING SAFETY .

  • Page 19: Safety And Accident Prevention

    SAFETY AND ACCIDENT PREVENTION...

  • Page 20: Safety, Noise And Vibration Plates

    Do not use fuel, petrol or solvents. • If the plates are damaged, ask for new ones to Komatsu Utility or to your Komatsu Utility Dealer. • In case of replacement of a component provided with a safety plate, make sure that this plate is applied also on the new part.
  • Page 21 SAFETY, NOISE AND VIBRATION PLATES RWA31670 RWA00010...

  • Page 22: Safety Plates For Machines With Excavator

    SAFETY, NOISE AND VIBRATION PLATES 2.1.1.2 SAFETY PLATES FOR MACHINES WITH EXCAVATOR RWA31680 RWA00020 RWA00030...
  • Page 23 SAFETY, NOISE AND VIBRATION PLATES RWA31690 RWA00020 RWA00010...

  • Page 24: Pictograms And Relevant Meanings

    SAFETY, NOISE AND VIBRATION PLATES 2.1.2 PICTOGRAMS AND RELEVANT MEANINGS The warning and danger plates applied on to the machine are accompanied or represented by pictograms. The personnel in charge with the operation and maintenance of the machine must know the symbols contained in the pictograms perfectly;...
  • Page 25 SAFETY, NOISE AND VIBRATION PLATES BIOLOGICAL HYDRAULIC OIL TOPPING UP BIO-OIL RWA34380 REFUELLING RWA00040 ENGINE LUBRICATING OIL FILTER RWA00080 FUEL FILTER RWA00060 ENGINE AIR SUCTION FILTER RWA00090...
  • Page 26 SAFETY, NOISE AND VIBRATION PLATES ENGINE COOLANT RWA00130 ENGINE COOLANT PRESSURE RWA00110 HYDRAULIC OIL LEVEL RWA00100 HYDRAULIC OIL FILTER RWA00070 ELECTRIC OUTLET 12 V RWA00120 ANCHORAGE POINT RWA00200...
  • Page 27 SAFETY, NOISE AND VIBRATION PLATES EMERGENCY EXIT RWA00190 LIFTING POINT RWA04920...

  • Page 28: Position Of The Noise Plates

    Do not use fuel, petrol or solvents. • If the plates are damaged, ask for new ones to Komatsu Utility or to your Komatsu Utility Dealer. • In case of replacement of a component provided with a noise plate, make sure that this plate is applied also on the new part.

  • Page 29: General Precautions

    GENERAL PRECAUTIONS 2.2 GENERAL PRECAUTIONS 2.2.1 GENERAL SAFETY RULES • Only trained and authorized personnel can use the machine and perform maintenance operations. • When using the machine or performing maintenance operations, follow all the safety rules, precautions and in- structions.

  • Page 30: Unauthorized Modifications

    2.2.4 UNAUTHORIZED MODIFICATIONS • Any modification made without the authorization of Komatsu Utility can involve hazards. • Before making a modification, consult your Komatsu Utility Dealer. Komatsu Utility declines any responsibility for injuries or damage caused by unauthorized modifications. 2.2.5 LEAVING THE OPERATORS SEAT •...

  • Page 31: Getting On And Off The Machine

    GENERAL PRECAUTIONS 2.2.6 GETTING ON AND OFF THE MACHINE • Do not jump on or off the machine, either when it is at rest and when it is moving. • When getting on or off the machine, always use the appropriate handles and footboards;...

  • Page 32: Preventing Fires Due To Fuel And Oil

    GENERAL PRECAUTIONS 2.2.8 PREVENTING FIRES DUE TO FUEL AND OIL Fuel, oil and some types of antifreeze can be easily ignited if they get in contact with a flame. Fuel is particularly flammable and therefore extremely hazardous. • Keep any naked flame away from flammable fluids. •...

  • Page 33: Preventing Damage Due To Asbestos Powder

    GENERAL PRECAUTIONS 2.2.10 PREVENTING DAMAGE DUE TO AS- BESTOS POWDER • Asbestos powder can be hazardous to your health if it is in- haled. • If you handle materials containing asbestos fibers, keep to the instructions given below: 1 - Do not use compressed air, but only aspirators to clean the machine and make sure that the room in which you are working is properly ventilated.

  • Page 34: Fire Extinguishers And First Aid Kit

    • When installing and using optional equipment, carefully read the relevant instruction manual and keep to the in- dications given therein. • Do not use optional or special equipment without the authorization of Komatsu Utility or the Komatsu Utility Deal- The installation and use of unauthorized equipment may create safety problems and adversely affect the effi- ciency and life of the machine.

  • Page 35: Precautions To Be Taken Before Starting The Engine

    (earth, stones, etc.). • Check the safety belt and change it if it is broken or damaged. Replace any component only with homologated parts supplied by Komatsu Utility or its Dealers.

  • Page 36: Room Ventilation

    PRECAUTIONS TO BE TAKEN BEFORE STARTING THE ENGINE 2.3.4 ROOM VENTILATION • Before starting the machine in confined or poorly ventilated places, make sure that there is proper ventilation or connect the engine exhaust pipe to a suction duct. The engine exhaust gas- es can be deadly.

  • Page 37: Precautions To Be Taken When Working

    PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4 PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.1 STARTING THE ENGINE • Before getting on the machine, walk around it and check for people and objects that might be in the way. • Do not start the engine if warning plates have been attached to the control levers. •...

  • Page 38: Checks For Travelling In Reverse

    PRECAUTIONS TO BE TAKEN WHEN WORKING 2 - Engage the safety lock (3) of the optional equipment control pedal (if installed). 3 - Lock the equipment control by shifting the safety device le- ver (4) to the lock position. • When travelling on roads, keep to the traffic rules and operate the flashing light.

  • Page 39: Moving The Machine

    PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.4 MOVING THE MACHINE IMPORTANT • The use of the speed increase function is allowed only for the fast speed transfers of the machine. • When moving the machine, lower the arm and fold the bucket completely;...
  • Page 40 PRECAUTIONS TO BE TAKEN WHEN WORKING • Travel up or down slopes with the heaviest part of the loader facing the top of the slope. • Do not travel on wet grass or thick layers of leaves: if the ma- chine moves obliquely in these conditions, it may slip.

  • Page 41: Preventing Electrocution

    PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.6 PREVENTING ELECTROCUTION • Digging operations near overhead electric lines are extremely dangerous and they may also cause death due to electrocution; for this reason, when working near overhead electrical lines, always respect the minimum safety distances prescribed by the competent authorities and by the accident-prevention rules in force.

  • Page 42: Visibility

    PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.7 VISIBILITY • Switch on the working lights as soon as visibility starts decreasing. • If visibility decreases due to mist, smoke or heavy rain, stop the machine in a safe position and wait for the weather to improve until visibility becomes acceptable..

  • Page 43: Parking The Machine

    PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.11 PARKING THE MACHINE • Park the machine on firm and level ground. If this is not possible and it is necessary to park on a slope, position the machine with the bucket directed downwards and carry out the following oper- ations: 1 - Rotate the bucket forward and rest it on the ground.

  • Page 44: Transporting The Machine On Other Vehicles

    TRANSPORTING THE MACHINE ON OTHER VEHICLES 2.5 TRANSPORTING THE MACHINE ON OTHER VEHICLES 2.5.1 LOADING AND UNLOADING THE MA- CHINE • Loading and unloading the machine on/from another vehicle al- Ramps ways involve potential hazards. Proceed with extreme care. • Perform loading and unloading on firm, level ground. Maintain a safety distance from the edges of ditches or from road sides.

  • Page 45: Battery

    BATTERY 2.6 BATTERY 2.6.1 SAFETY PRECAUTIONS FOR WORK ON BATTERIES • Electrolytic batteries contain sulphuric acid which can cause burns. It can also corrode clothing and make holes in it. If you inadvertently splash battery acid on yourself or on someone else, immediately wash the affected part with plenty of water.

  • Page 46: Precautions For Emergency Recovery

    PRECAUTIONS FOR EMERGENCY RECOVERY 2.7 PRECAUTIONS FOR EMERGENCY RECOVERY • The removal hooks are to be used exclusively for emergency re- covery and not for towing vehicles. • Before moving the machine, make sure that all the controls are in neutral. •...
  • Page 47 PRECAUTIONS FOR EMERGENCY RECOVERY • Move the machine just far enough to permit the required re- pairs. • Do not remove the machine in any way other than that indicated in paragraph “3.15.1 HOW TO REMOVE THE MACHINE”. CAUTION • The maximum pulling force for the emergency recovery is the following: F = 2360 kg.

  • Page 48: Precautions To Be Taken During Maintenance

    PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8 PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.1 WARNING PLATES • Before starting any maintenance operation, position the ma- chine on a firm and level surface, rest the equipment on to the ground, engage the safety locks of either the equipment and the controls and stop the engine.

  • Page 49: Personnel

    If one or more plates should be damaged, request for spare ones to Komatsu Utility or to your Komatsu Utility Dealer and provide for replacing them. • Water into the electrical system provokes the oxidation of the contacts and may hinder the start of the machine or even make it start suddenly and abruptly.

  • Page 50: Use Of The Engine During Maintenance

    PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.7 USE OF THE ENGINE DURING MAINTENANCE • During maintenance operations, run the engine only when indispensable. If it is necessary to have the engine running (for example, to wash the cooling circuit or to check the functionality of the alternator), an operator should constantly remain in the cab, in order to be able to stop the engine whenever this is required.

  • Page 51: Rules For Refuelling And Adding Oil

    PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.10 RULES FOR REFUELLING AND ADD- ING OIL • Keep away from naked flames while refuelling or adding oil. • Spilled fuel or oil make the ground slippery and may cause acci- dents; clean any dirty area immediately and carefully. •...

  • Page 52: Precautions Concerning The Battery And The Alternator

    PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.13 PRECAUTIONS CONCERNING THE REMOVAL BATTERY AND THE ALTERNATOR • When repairing the electrical system, disconnect the battery in order to stop the flow of current. IMPORTANT • Disconnect first the negative earth cable (-) and then the positive cable (+).

  • Page 53: Precautions Concerning High-Pressure Hoses

    PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.15 PRECAUTIONS CONCERNING HIGH-PRESSURE HOSES • Do not bend high-pressure hoses or rub them with sharp or abrasive objects. Do not use bent or cracked rigid tubes or hoses that were previously rejected because of leaks or fastening de- fects, since they may burst during use.

  • Page 54: Cooling Fan And Fan Belt

    PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.18 COOLING FAN AND FAN BELT • Be careful to the rotating parts and do not allow anyone to get too close to these parts, since clothes or parts of the body may get caught into them. •...

  • Page 55: Precautions To Be Taken When Using The Synthetic Biodegradable Oil Type «Hees

    PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.21 PRECAUTIONS TO BE TAKEN WHEN USING THE SYNTHETIC BIODE- GRADABLE OIL TYPE «HEES» • It is not possible to mix the synthetic biodegradable oil type HEES with ordinary hydraulic oils, since when the temperature increases insoluble compounds are generated, which are deposited on the filters and clog them (the maximum concentration of ordinary oil cannot exceed 1% of the total quantity of oil).
  • Page 56 THIS PAGE WAS INTENTIONALLY LEFT EMPTY...
  • Page 57 THE MACHINE AND ITS OPERATIONS...

  • Page 58: Safety Locks

    SAFETY LOCKS 3.1 SAFETY LOCKS DANGER • If it is necessary to stop the machine with raised loader arm, always engage the mechanical safety lock on the arm and lock the equipment and travel control by lifting the safety bars (see “3.3.5 pos. 1 SAFETY BARS”).
  • Page 59 SAFETY LOCKS DANGER • After the coupling of the lock (1), keep it in position by means of the safety pin (2). • Do not carry out any operation under the raised loader arm if the safety lock (1) has not been engaged. •...

  • Page 60: Excavator Locks (If Installed)

    SAFETY LOCKS c) Locking of the safety device (7) for the inhibition of the equipment control. RWAA11550 3.1.2 EXCAVATOR LOCKS (if installed) IMPORTANT • When travelling on roads, always position the excavator following the longitudinal axis of the vehicle, apply the safety locks and lock the equipment control by shifting the safety device lever to the lock position.
  • Page 61 SAFETY LOCKS • If the machine is equipped with rear stabilizers, raise the sup- ports completely and engage the relevant safety chains (5). RWAA4140 RWAA4150 RWAA4160 RWAA4170 RWA36120...

  • Page 62: Asphalt Cutter Locks (If Installed)

    SAFETY LOCKS 3.1.3 ASPHALT CUTTER LOCKS (if installed) IMPORTANT • When travelling on roads, always position the asphalt cut- ter following the longitudinal axis of the vehicle, apply the safety locks and lock the equipment control by shifting the safety device lever to the lock position. •...

  • Page 63: General Views

    GENERAL VIEWS 3.2 GENERAL VIEWS 3.2.1 FRONT GENERAL VIEW RWA31700 1 - Bucket 5 - Frame 6 - Arm 2 - Bucket cylinder 7 - Cab 3 - Wheels 4 - Lifting cylinder...

  • Page 64: Rear General View

    GENERAL VIEWS 3.2.2 REAR GENERAL VIEW RWA31860 1 - Rear panel 3 - Exhaust silencer 2 - Engine hood...

  • Page 65: Cab Inside General View

    GENERAL VIEWS 3.2.3 CAB INSIDE GENERAL VIEW RWA31880 1 - Safety bars 2 - Travel and steering control lever (ISO PATTERN SYSTEM) - Left wheel travel and arm lifting control lever (OPTIONAL PATTERN SYSTEM) 3 - Bucket lifting control lever (ISO PATTERN SYSTEM) - Right wheel travel and bucket folding control lever (OPTION- AL PATTERN SYSTEM) 4 - Auxiliary hydraulic kit control pedal (if installed)
  • Page 66 GENERAL VIEWS 10 - Left console switches 11 - Right console switches RWAA11260 RWAA9720...

  • Page 67: Instruments And Controls

    INSTRUMENTS AND CONTROLS 3.3 INSTRUMENTS AND CONTROLS 3.3.1 INSTRUMENTS RWA31900 1 - Hour meter 2 - Engine coolant temperature indicator 3 - Fuel level indicator HOUR METER This instrument indicates the total number of operating hours of the engine. The count is continuous and the number is increased by 1 when the engine has run for one hour, independently of its speed.
  • Page 68 INSTRUMENTS AND CONTROLS ENGINE COOLANT TEMPERATURE INDICA- Indica la temperatura del liquido di raffreddamento del motore che This instrument indicates the temperature of the engine coolant, normalmente deve essere di 80-85°C. which in normal conditions should be 80-85°C. Dopo l’avviamento è necessario lasciar riscaldare il motore prima After starting the engine and before starting work, let it warm up di iniziare i lavori.

  • Page 69: Warning Lights

    INSTRUMENTS AND CONTROLS 3.3.2 WARNING LIGHTS 9 10 RWA31890 1 - Generator warning light 7 - Speed increase warning light 2 - Preheating warning light 8 - Floating device warning light 3 - Engine oil pressure warning light 9 - Direction indicator warning light 4 - Air cleaner clogging warning light 10 - Working light warning light 5 - Hydraulic oil filter clogging warning light...
  • Page 70 INSTRUMENTS AND CONTROLS PREHEATING WARNING LIGHT This warning light comes on when the ignition key is turned to po- sition « » to start the engine at low temperatures and goes out automatically after approximately 13 seconds (see «3.6.2.2 Start- ing with cold engine or in cold climates»).
  • Page 71 INSTRUMENTS AND CONTROLS PARKING BRAKE WARNING LIGHT It signals that the parking brake has been applied. RWA20230 SPEED INCREASE WARNING LIGHT It comes on when the high speed is selected (see “3.3.3 pos. 12 SPEED INCREASE PUSH BUTTON”). RWA18440 FLOATING DEVICE WARNING LIGHT It comes on when the floating device is connected (see “3.3.3 pos.
  • Page 72 INSTRUMENTS AND CONTROLS 10 - WORKING LIGHT WARNING LIGHT It comes on when the working lights are turned on with the switch positioned on the dashboard (see”3.3.3 pos. 5 WORKING LIGHT SWITCH”). RWA07180 11 - SAFETY DEVICE FUNCTIONALITY CONTROL UNIT This control unit is positioned on the dashboard and checks the condition of the safety devices installed on the machine.
  • Page 73 INSTRUMENTS AND CONTROLS C - GREEN WARNING LIGHT LED on - This means that the safety bars are down and therefore safety is ensured. LED off - (With the red warning light coming on at the same time) This means that the safety bars are not completely down and therefore the work equipment and the travel func- tion cannot be used.

  • Page 74: Switches Und Push Buttons

    INSTRUMENTS AND CONTROLS 3.3.3 SWITCHES UND PUSH BUTTONS 1 - Parking brake push button 2 - Revolving light switch 3 - Left stabilizer button (if installed) 4 - Right stabilizer button (if installed) 5 - Working light switch 6 - Emergency switch (HAZARD) 7 - Parking light and low beam switch 8 - Direction indicator switch RWAA10590...
  • Page 75 INSTRUMENTS AND CONTROLS 13 - Floating device button (if installed) 14 - Available for other functions RWAA10450 PARKING BRAKE PUSH BUTTON If pressed, this switch comes on and engages the parking brake. If pressed again, it disengages the brake, thus releasing the ma- chine IMPORTANT •...
  • Page 76 INSTRUMENTS AND CONTROLS LEFT STABILIZER BUTTON (if installed) This is a button with two temporary positions and the neutral posi- tion at its centre. Press the button forward or backward to lower or raise the stabiliz- For use, see ”3.3.5 pos. 14 LEFT STABILIZER CONTROL” RWA23320 RIGHT STABILIZER BUTTON (if installed) This is a button with two temporary positions and the neutral posi-...
  • Page 77 INSTRUMENTS AND CONTROLS PARKING LIGHT AND LOW BEAM SWITCH This is a two-position switch: The 1st click enables the circuit of the instrument lights and the parking lights. The 2nd click enables the general circuit of the low beam or work- ing lights, according to the position of the switch (2).
  • Page 78 INSTRUMENTS AND CONTROLS 11 - FRONT EQUIPMENT «HIGH-FLOW» HYDRAU- LIC SYSTEM SWITCH (if installed) This is a double-function switch and allows the oil delivery of the hydraulic pump to be constantly increased. For use, see “3.3.5 pos. 9 HIGH-FLOW HYDRAULIC SYSTEM CONTROL”...

  • Page 79: Electrical Accessories

    INSTRUMENTS AND CONTROLS 3.3.4 ELECTRICAL ACCESSORIES 1 - Acoustic alarm 2 - Electric outlet 3 - Accumulator disconnection switch (if provided) RWAA9760 RWAA11570 RWAA12480 ACOUSTIC ALARM This acoustic alarm sounds when the circuits are energized with the ignition key (rotation to position ìIî) and is automatically dis- connected when the engine is started.
  • Page 80 INSTRUMENTS AND CONTROLS ELECTRIC OUTLET An electric outlet is positioned on the right side of the cab inner wall for the connection of a lighting device for routine and mainte- nance operations. It is a two-pole outlet and is in compliance with the ISO 4165- 1979 standard.

  • Page 81: Machine Controls

    INSTRUMENTS AND CONTROLS 3.3.5 MACHINE CONTROLS RWA31880 1 - Safety bars 2 - Travel and steering control lever (ISO PATTERN SYSTEM) - Left wheel travel and arm lifting control lever (OPTIONAL PATTERN SYSTEM) 3 - Arm lifting control lever (ISO PATTERN SYSTEM) - Right wheel travel and bucket folding control lever (OPTION- AL PATTERN SYSTEM) 4 - Auxiliary hydraulic kit control pedal (if installed)
  • Page 82 INSTRUMENTS AND CONTROLS 11 - Floating device control (if installed) 12 - Pattern shifting control (if installed) 13 - Right stabilizer control (if installed) 14 - Left stabilizer control (if installed) 15 - Optionals RWAA10490 RWAA11590 RWA36000 RWAA11610...
  • Page 83 Therefore, before modifying or replacing wirings and elec- trical components, which may result in malfunctions of the devices, contact your Komatsu Utility Dealer. RWAA9770 The locking of the servo control safety device is obtained by lifting the bars (1) in vertical position.
  • Page 84 INSTRUMENTS AND CONTROLS ISO PATTERN CONTROL SYSTEM TRAVEL AND STEERING CONTROL LEVER DANGER • Before carrying out any manoeuvre with this lever, the operator must be seated in the work position with fastened safety belt; before every manoeuvre the operator must take all the precautions indicated in “3.6.5 HOW TO MOVE THE MACHINE”.
  • Page 85 INSTRUMENTS AND CONTROLS If the lever is operated in directions that are inclined with respect to the machine axis, simultaneous steering move- ments proportional to the angle of inclination are obtained, since the two hydraulic pumps corresponding to each single function are engaged at the same time. N - Neutral A - Forward left steering B - Forward right steering...
  • Page 86 INSTRUMENTS AND CONTROLS ARM LIFTING CONTROL LEVER DANGER • Before carrying out any manoeuvre with this lever, the operator must be seated in the work position with fastened safety belt; before any manoeuvre he must perform the operations described in “3.13 USING THE WORK EQUIPMENT”.
  • Page 87 INSTRUMENTS AND CONTROLS If the lever is operated in directions that are inclined with respect to the machine axis, simultaneous movements proportional to the angle of inclination are obtained, since the two hydraulic distributors corresponding to each sin- gle function are engaged at the same time. COMBINED MANOEUVRES N - Neutral A - Arm lowering - Bucket folding...
  • Page 88 INSTRUMENTS AND CONTROLS OPTIONAL PATTERN CONTROL SYSTEM LEFT WHEEL TRAVEL, STEERING AND ARM LIFTING CONTROL LEVER DANGER • Before carrying out any manoeuvre with this lever, the operator must be seated in the work position with fastened safety belt; before every manoeuvre the operator must take all the precautions indicated in “3.6.5 HOW TO MOVE THE MACHINE”...
  • Page 89 INSTRUMENTS AND CONTROLS CAUTION • Always travel at moderate speed, in order to obtain maximum precision and maximum efficiency during work. • During work, the use of the lever must be proportional to the required effort and such as to obtain con- stant engine speed.
  • Page 90 INSTRUMENTS AND CONTROLS RIGHT WHEEL TRAVEL, STEERING AND BUCKET FOLDING CONTROL LEVER DANGER • Before carrying out any manoeuvre with this lever, the operator must be seated in the work position with fastened safety belt; before every manoeuvre the operator must take all the precautions indicated in “3.6.5 HOW TO MOVE THE MACHINE”...
  • Page 91 INSTRUMENTS AND CONTROLS CAUTION • Always travel at moderate speed, in order to obtain maximum precision and maximum efficiency during work. • During work, the use of the lever must be proportional to the required effort and such as to obtain con- stant engine speed.
  • Page 92 INSTRUMENTS AND CONTROLS AUXILIARY HYDRAULIC KIT CONTROL PEDAL (IF INSTALLED) DANGER • Always engage the safety device (2) when the use of the control is not required, during travel and when parking the machine. • When connecting hydraulically-controlled equipment to the auxiliary kit, make sure that the control ped- al is always in position «A»...
  • Page 93 INSTRUMENTS AND CONTROLS The pedal is used also to control the oil flow of equipment with bi- directional circuit (multipurpose buckets, drills, asphalt cutters, etc.). Shift the safety lever (3) to the locking position and press the pedal (1) to position «L» or «R» to control the movement of the equipment.
  • Page 94 INSTRUMENTS AND CONTROLS PARKING BRAKE DANGER • The parking brake must be applied whenever the operator leaves the driving position, even if for a short time. • The machine must be positioned with the wheels resting firmly on the ground. If one of the wheels is unstable or is resting on a small obstacle, the machine may move.
  • Page 95 INSTRUMENTS AND CONTROLS «HIGH-FLOW» HYDRAULIC SYSTEM CON- TROL (IF INSTALLED) IMPORTANT • The «high-flow» hydraulic control can be used when the operator needs an increased oil delivery in the optional equipment hydraulic system. Press the switch (1) when the optional equipment needs a con- stant increase in oil delivery.
  • Page 96 INSTRUMENTS AND CONTROLS 11 - FLOATING DEVICE CONTROL (IF INSTALLED) The right joystick grip is provided with a switch (1) that when pressed (WARNING LIGHT ON) (see “3.3.2 pos. 8 FLOATING DEVICE WARNING LIGHT”) frees the loader arm (floating posi- tion), that is, allows it to automatically follow the undulations of the ground.
  • Page 97 INSTRUMENTS AND CONTROLS The control system selection lever (1) is held in the correct posi- tion by means of a safety screw (2). When it is necessary to modify the control system, loosen the safety screw (2) until releasing the lever (1). Use a 13 mm span- ner.
  • Page 98 INSTRUMENTS AND CONTROLS 13 - RIGHT STABILIZER CONTROL (IF INSTALLED) DANGER • Before moving the machine in any way, make sure that the stabilizer feet are completely raised. • Before travelling on roads, make sure that the safety locks of the stabilizer feet have been applied. The right stabilizer is operated by means of the button (1) in- RWA36010 stalled on the left console and according to the indicated posi-...

  • Page 99: Fuses And Relays

    FUSES AND RELAYS 3.4 FUSES AND RELAYS IMPORTANT • When changing a fuse, make sure that the ignition key is in position « ». • If the fuses are oxidized, corroded or do not fit perfectly in their seat, replace them only with new fuses having the same capacity.

  • Page 100: Main Fuse

    FUSES AND RELAYS VERSION WITH OPTIONALS POSITION COLOUR CAPACITY (A) INVOLVED CIRCUIT Violet Left parking lights, number plate light Violet Control panel lights, right parking lights Light blue Horn, low beam or front working lights Switch, direction indicator lights Light blue Rear working lights, stop lights Power supply of joystick switches, floating device, pattern shifting 12 V electric outlet, revolving light, emergency lights (HAZARD)

  • Page 101: Relays

    FUSES AND RELAYS 3.4.3 RELAYS The relays are positioned inside the engine compartment and can be reached by raising the cab (see”3.5.3.1 RAISING THE CAB”). Some relays are grouped inside the container fixed to the right side of the machine frame and can be reached by removing the cover (A).
  • Page 102 FUSES AND RELAYS POSITION DESCRIPTION Safety unit RWA36050 POSITION DESCRIPTION Relay board: A - Stop lights B - 1 way C - 3 way D - Momentary high-flow E - 2 way F - Blinking G - Detent high-flow RWA36060 POSITION DESCRIPTION Parking brake relay...

  • Page 103: Guards And Driver's Seat

    GUARDS AND DRIVER’S SEAT 3.5 GUARDS AND DRIVER’S SEAT 3.5.1 ENGINE HOOD DANGER • Do not open the engine hood when the engine is running. • Do not use the machine without engine hood and do not start the engine when the hood is open, unless this is ex- pressly prescribed for certain maintenance operations.

  • Page 104: Rear Panel

    GUARDS AND DRIVER’S SEAT 3.5.2 REAR PANEL DANGER IMPORTANT • L’apertura del cofano posteriore è possibile solo dopo aver • Do not open the rear panel when the engine is running. aperto il cofano motore. • Do not use the machine without the rear panel and do not start the engine with open panel if this is not expressly pre- APERTURA DEL COFANO scribed for certain maintenance operations.

  • Page 105: Cab

    • The cab is ROPS and FOPS homologated - level I; if the cab is subjected to an impact, or if the machine overturns, immediately contact your Komatsu Utility Dealer, who will check the stiffness of the cab and make sure that the operatorís safety is guaranteed.

  • Page 106: Raising The Cab

    GUARDS AND DRIVER’S SEAT 3.5.3.1 RAISING THE CAB • Stringere sempre le viti di fissaggio della cabina a coppia DANGER rispettando i valori riportati nella sezione «4.4.2 COPPIE DI SERRAGGIO SPECIFICHE». • Raise the cab only with the machine parked on a firm and level surface and with arm lowered to the ground complete Per alcune operazioni di manutenzione o di servizio è...
  • Page 107 GUARDS AND DRIVER’S SEAT CAUTION • When lowering the cab, be careful to the hold points and carry out the operation with the help of another person. 1 - Remove the safety split pin (2) of the cab overturning pro- tection lock (3) and put it in the appropriate seat (4).

  • Page 108: Standard Seat

    GUARDS AND DRIVER’S SEAT 3.5.4 STANDARD SEAT The seat can be adjusted longitudinally and the operator can choose the driving position that is most suitable for his physique. The longitudinal adjustment of the seat is obtained by operating the lever (1) and making the seat slide on the guides; once the desired position has been found, release the lever and carry out slight movements, in order to make sure that the lock pin is en- gaged in its seat.

  • Page 109: Safety Belt

    GUARDS AND DRIVER’S SEAT 3.5.6 SAFETY BELT DANGER • Before starting the engine, fasten the safety belt. • The safety belt must be changed when it is frayed, dam- aged or worn and in any case every 4 years. The safety belt (1) is of the type with two coupling points and ad- justable length (2);...

  • Page 110: Technical Documentation Case

    GUARDS AND DRIVER’S SEAT 3.5.8 TECHNICAL DOCUMENTATION CASE CAUTION CAUTION • Il manuale d’uso e il catalogo ricambi fanno parte integran- • The operation manual and the spare parts catalogue are in- te della macchina e la devono seguire anche nei cambi di tegral parts of the machine and must accompany it even in proprietà.

  • Page 111: Use Of The Machine

    • Dirt, oil and fuel in the engine compartment near its hot parts may damage the machine and even cause fires. Check frequently and eliminate any leakage; if leakages occur repeatedly, contact your Komatsu Utility Dealer. Before starting the engine, check around and under the machine to verify: 1 - if there are loose screws or nuts;...

  • Page 112: Operational Checks

    USE OF THE MACHINE 3.6.1.3 OPERATIONAL CHECKS DANGER • All the checks must be carried out by the operator while seated, with fastened safety belt. • If the machine has been stopped after use or in order to carry out maintenance operations, the safety devices may have been inadvertently disconnected;...

  • Page 113: Starting The Engine

    USE OF THE MACHINE 3.6.2 STARTING THE ENGINE DANGER • Before starting the engine, carefully read the instructions and information regarding safety given in this manual and make sure that you know the controls perfectly. From the moment in which the engine is started, the operator is directly responsible for any damage that may be caused by wrong manoeuvres and non-compliance with the safety regulations in force.

  • Page 114: Starting With Cold Engine Or In Cold Climates

    USE OF THE MACHINE 3.6.2.2 STARTING WITH COLD ENGINE OR IN COLD CLIMATES DANGER • Do not use any fluids or products that facilitate the cold starting of the engine, since these are ether-based and may cause explosions. 1 - Pull the accelerator lever until reaching half of its stroke and turn the ignition key to the preheating position «...

  • Page 115: Warming The Engine

    USE OF THE MACHINE 3.6.3 WARMING THE ENGINE 1 - After starting the engine, let it warm up before starting work. 2 - The ideal warming up of the engine is achieved by making the engine run at idling speed by means of the hand accelerator.
  • Page 116 USE OF THE MACHINE Before moving the machine, check the instruments, warm up the engine and the hydraulic system oil, make sure that the safety device of the controls is released (safety bars down) and the bucket is folded; the equipment control lever must be in neutral position.

  • Page 117: Steering (Changing Direction)

    USE OF THE MACHINE 3.6.5.1 STEERING (CHANGING DIRECTION) DANGER • If possible, avoid any abrupt change of direction. Counterrotations should be carried out with the ma- chine running at moderate speed. • When travelling on roads, avoid carrying out counterrotations, since they may create dangerous situa- tions;...
  • Page 118 USE OF THE MACHINE CHANGING DIRECTION WHEN THE MACHINE IS MOVING To turn to the LEFT, rotate the travel lever anticlockwise by ap- proximately 45°. RWA31960 To turn to the RIGHT, rotate the travel lever clockwise by approxi- mately 45°. RWA31970 HOW TO CARRY OUT A COUNTERROTATION (with the machine not moving)

  • Page 119: How To Move The Machine (Optional Pattern Control System)

    USE OF THE MACHINE 3.6.6 HOW TO MOVE THE MACHINE (OPTIONAL PATTERN CONTROL SYS- TEM) DANGER • Before moving the machine, make sure that you know the control functions and all the relevant safety regulations perfectly. • The operator must be seated in the driving position with fastened safety belt. •...
  • Page 120 USE OF THE MACHINE 2 - Operate the joysticks (1) and (2) at the same time, shifting them forward or backward to move the machine. RWAA11680 RWA32270...

  • Page 121: Steering (Changing Direction)

    USE OF THE MACHINE 3.6.6.1 STEERING (CHANGING DIRECTION) DANGER • If possible, avoid any abrupt change of direction. Counterrotations should be carried out with the ma- chine running at moderate speed. • When travelling on roads, avoid carrying out counterrotations, since they may create dangerous situa- tions;...
  • Page 122 USE OF THE MACHINE CHANGING DIRECTION WHEN THE MACHINE IS MOVING (THE TWO JOYSTICKS ARE IN THE SAME POSITION) To turn to the LEFT, shift the left joystick to the NEUTRAL position (N): the machine will turn to the LEFT. RWA32300 To turn to the RIGHT, shift the right joystick to the NEUTRAL posi- tion (N): the machine will turn to the RIGHT.

  • Page 123: Moving On Slopes

    USE OF THE MACHINE 3.6.7 MOVING ON SLOPES DANGER • Before working on slopes, always check the functionality of the parking brake. • Always go up or down slopes at moderate speed and with the heavier end of the loader always directed towards the top of the slope.

  • Page 124: Maximum Immersion Depth

    USE OF THE MACHINE 3.6.8 MAXIMUM IMMERSION DEPTH DANGER • If it is necessary to work with the machine immersed in water on river banks or sea shores, always check the water depth and the current flow. • Make sure that the surface on which you are working is sufficiently firm. If it is necessary to work with the machine immersed in water, make sure that the maximum immersion depth does not exceed 21 cm and in any case that the engine cooling fan does not touch the water, since it may get damaged or even break.

  • Page 125: Parking The Machine

    PARKING THE MACHINE 3.7 PARKING THE MACHINE 3.7.1 PARKING ON LEVEL GROUND DANGER • Park the machine on firm and level ground, in a sufficiently wide space, so that checks, daily lubrication and refuelling can be carried out without problems. •...

  • Page 126: Parking On Slopes

    PARKING THE MACHINE 3.7.2 PARKING ON SLOPES DANGER • The movement of the machine when the operator is not on board may cause serious accidents and even death; to pre- vent this, carry out the operations described below. • Park on slopes only when it is absolutely necessary. •...

  • Page 127: Stopping The Engine

    STOPPING THE ENGINE 3.8 STOPPING THE ENGINE IMPORTANT • Do not stop the engine suddenly, except in case of emer- gency; the sudden stop of the engine while it is running shortens its life. • It is likewise recommended not to stop the engine suddenly if it has been running for a long period and is still hot;...

  • Page 128: Transporting The Machine On Other Vehicles

    TRANSPORTING THE MACHINE ON OTHER VEHICLES 3.9 TRANSPORTING THE MACHINE ON OTHER VEHICLES 3.9.1 LOADING AND UNLOADING THE MACHINE DANGER • The loading and unloading of the machine on/from the means of transport must be carried out on a flat surface and at a safety distance from the edges of ditches or from roadsides.

  • Page 129: Transport

    TRANSPORTING THE MACHINE ON OTHER VEHICLES 3.9.2 TRANSPORT 1 - Check the overall dimensions of the means of transport: the height, width and weight of the vehicle - machine included - must be compatible with the road and any tunnel, underpass, bridge, electric or telephone line that may be found on the way.

  • Page 130: How To Lift The Machine

    HOW TO LIFT THE MACHINE 3.10 HOW TO LIFT THE MACHINE DANGER • To lift the machine use sufficiently dimensioned cables; do not use worn cables or cables with broken strands. • Do not lift the machine with the operator on board and make sure that no one is approaching the ma- chine before lifting it.

  • Page 131: Precautions To Be Taken In The Cold Season

    PRECAUTIONS TO BE TAKEN IN THE COLD SEASON 3.11 PRECAUTIONS TO BE TAKEN IN THE COLD SEASON During the cold season or in areas where the temperature is particularly low, especially during the night, it is nec- essary to take some countermeasures meant to limit the damage deriving from low temperatures. 3.11.1 FUEL AND LUBRICANTS 1 - Change the fuel and use the winter fuel ASTM D975 No.

  • Page 132: Battery

    PRECAUTIONS TO BE TAKEN IN THE COLD SEASON 3.11.3 BATTERY DANGER • To avoid explosions due to the presence of gas, do not provoke sparks and do not use naked flames near the battery. • The battery electrolyte is dangerous. If it comes in contact with the eyes or the skin, immediately rinse with plenty of water and consult a doctor without delay.

  • Page 133: Precautions To Be Taken In The Warm Season

    PRECAUTIONS TO BE TAKEN IN THE WARM SEASON 3.12 PRECAUTIONS TO BE TAKEN IN THE WARM SEASON 1 - At the end of the cold season, change the lubricants, the coolant and the fuel. IMPORTANT • The coolant must be changed only if it is not permanent. For the relevant specifications, see “4.3 FUEL, COOLANT AND LUBRICANTS”.

  • Page 134: Using The Work Equipment

    USING THE WORK EQUIPMENT 3.13 USING THE WORK EQUIPMENT DANGER • Always fasten the safety belt before any manoeuvre. • Before moving the equipment, make sure that there is no one standing in the work area. • Carry out all the possible movements and make sure that the control levers operate correctly. •...

  • Page 135: Organizing The Work Area

    USING THE WORK EQUIPMENT 3.13.2 ORGANIZING THE WORK AREA CORRECT If after a first inspection the area results to be uneven, encum- bered with big obstacles or characterized by considerable height differences, before starting work it is advisable to level the ground as much as possible, both for the machine and for the vehicles to be loaded.

  • Page 136: Loading Material On Heaps And On Level Surfaces

    USING THE WORK EQUIPMENT 3.13.3 LOADING MATERIAL ON HEAPS AND ON LEVEL SURFACES The efficiency of the bucket depends on how the operator begins to load; keep to the following rules: 1 - Start moving with the arm completely lowered and direct the bucket toward the base of the heap.

  • Page 137: Loading Material On Slopes

    USING THE WORK EQUIPMENT 3.13.4 LOADING MATERIAL ON SLOPES DANGER • The loading of material on slopes is to be carried out only if absolutely necessary, always going up with the bucket di- rected forward. • Go down slopes in reverse, with the loader directed for- ward and lowered bucket.

  • Page 138: Digging Method

    USING THE WORK EQUIPMENT 3.13.5 DIGGING METHOD 1 - At the beginning of work, keep the bucket at the correct penetration angle. 2 - Once the desired digging depth has been reached, position the bucket with its back parallel to bottom of the ex- cavation and then start filling.

  • Page 139: Changing The Bucket With Standard Rapid Coupling

    USING THE WORK EQUIPMENT 3.13.6 CHANGING THE BUCKET WITH STANDARD RAPID COUPLING DANGER • Stop the machine on a firm and level surface and lower the equipment to the ground. • Before leaving the machine, stop the engine, release the residual pressures by operating the equipment control lever more than once in all directions and lock the safety bars.

  • Page 140: Releasing The Bucket

    USING THE WORK EQUIPMENT 3.13.6.1 RELEASING THE BUCKET 1 - Lower the arm completely and rest the bucket on to the ground in horizontal position. 2 - Stop the engine, release the residual pressures and lock the safety bars. 3 - Rotate the lever (1) to the left to release the coupling pins (2). 4 - Start the machine again and move gradually in reverse, at the same time rotating the tool-holder plate (3) completely forward until releasing it from the upper seat on the bucket (4).
  • Page 141 USING THE WORK EQUIPMENT 3 - Slowly raise the arm and at the same time fold the tool-holder until it is completely engaged in its seat. 4 - Fold the bucket completely. 5 - Stop the engine, release the residual pressures and lock the safety bars.

  • Page 142: Changing The Bucket With Optional Rapid Coupling

    USING THE WORK EQUIPMENT 3.13.7 CHANGING THE BUCKET WITH OPTIONAL RAPID COUPLING DANGER • Stop the machine on a firm and level surface and lower the equipment to the ground. • Before leaving the machine, stop the engine, release the residual pressures by operating the equipment control lever more than once in all directions and lock the safety bars.

  • Page 143: Releasing The Bucket

    USING THE WORK EQUIPMENT 3.13.7.1 RELEASING THE BUCKET 1 - Lower the arm completely and rest the bucket on to the ground in horizontal position. 2 - Stop the engine, release the residual pressures and lock the safety bars. 3 - Rotate the levers (1) towards the outside in vertical position to release the coupling pins (2).

  • Page 144: Checking The Position Of The Locking Pins

    USING THE WORK EQUIPMENT 3 - Slowly raise the arm and at the same time fold the tool-holder until it is completely engaged in its seat. 4 - Fold the bucket completely. 5 - Stop the engine, release the residual pressures and lock the safety bars.

  • Page 145: Adjusting The Locking Pins

    USING THE WORK EQUIPMENT 3.13.7.4 ADJUSTING THE LOCKING PINS The pin adjustment must be carried out with the levers (1) locked and proceeding as indicated below: 1 - Loosen the lock nut (3). 2 - Adjust the nut (2) until reaching the safety value. 3 - Fasten the lock nut (3) again.

  • Page 146: Long Periods Of Inactivity

    LONG PERIODS OF INACTIVITY 3.14 LONG PERIODS OF INACTIVITY 3.14.1 BEFORE THE PERIOD OF INACTIVITY DANGER • When draining the fuel, do not smoke or bring naked flames near the machine. Place a container under the machine to gather the fuel and prevent it from spreading around.

  • Page 147: During The Period Of Inactivity

    IMPORTANT • If the machine is stored without carrying out the monthly rust-prevention treatment, have maintenance performed by your Komatsu Utility Dealer. When using the machine after a long period of inactivity, proceed as follows: 1 - Free the exhaust pipe from the sealing covers.

  • Page 148: Troubleshooting

    TROUBLESHOOTING 3.15 TROUBLESHOOTING 3.15.1 HOW TO REMOVE THE MACHINE DANGER • When removing the machine, use a wire rope suitable for the weight of the machine to be removed. If the machine gets stuck in mud and cannot get out using only its motive power, or in case of breakdown, use a wire rope as shown in the figure on the right.

  • Page 149: If The Battery Is Depleted

    TROUBLESHOOTING 3.15.3 IF THE BATTERY IS DEPLETED DANGER • When checking or carrying out any operation on the bat- tery, stop the engine and make sure that the ignition key is in position « ». • The battery produces hydrogen, which may explode. Do not use naked flames and do not smoke near the battery, and avoid producing sparks.

  • Page 150: Starting With Booster Cables

    TROUBLESHOOTING 3.15.3.1 STARTING WITH BOOSTER CABLES DANGER • When starting the engine with the aid of another machine, connect the batteries in parallel. • When connecting the cables, avoid any contact between the positive cable (+) and the negative cable (-). •...

  • Page 151: Other Troubles

    (•): Always contact your Komatsu Utility Dealer when you have to carry out this operation. • : If the anomaly or its cause are not included in the failures indicated below, contact your Komatsu Utility Dealer for the necessary repair.

  • Page 152: Hydraulic System

    TROUBLESHOOTING 3.15.4.2 HYDRAULIC SYSTEM TROUBLE CAUSE REMEDY • • Pump emits an abnormal noise No oil in the tank. Top up. • (•) Faulty pump. Repair or change. • • Hydraulic oil unsuitable for the tem- Change. perature. • (•) Equipment moves only at low speed Faulty pump.

  • Page 153: Engine

    TROUBLESHOOTING 3.15.4.3 ENGINE TROUBLE CAUSE REMEDY • • Oil pressure warning light remains on Oil level in oil pan too low. Top up.. • • even with engine at high speed Oil filter clogged. Change filter. • • Oil unsuitable for the season. Change.

  • Page 154: Hydrostatic Transmission

    TROUBLESHOOTING 3.15.4.4 HYDROSTATIC TRANSMISSION TROUBLE CAUSE REMEDY • • Machine moves neither forward, nor Oil level insufficient. Top up. • • backward: Suction filter clogged. Change. • (•) Faulty flexible coupling. Change coupling. • (•) Max. pressure valves faulty or dirty. Clean or change valves.
  • Page 155 TROUBLESHOOTING TROUBLE CAUSE REMEDY • • Machine does not reach max. speed Suction filter clogged. Change. • (•) selected Endothermic engine does not reach Change diesel oil filter and check max. speed. injection pump. • (•) Auxiliary pump (gear pump) faulty. Check delivery, repair or change.
  • Page 156 THIS PAGE WAS INTENTIONALLY LEFT EMPTY...

  • Page 157: Maintenance

    MAINTENANCE...

  • Page 158: Guide To Maintenance

    • Raise the cab taking all the precautions indicated in “3.5.3.1 RAISING THE CAB”. • Use Komatsu Utility genuine oils and greases; choose oils suitable for the ambient temperature. • Use clean oils and greases. Keep the oil and grease containers clean. Keep any foreign matter away from oils and greases.
  • Page 159 GUIDE TO MAINTENANCE • Never mix oils of different brands. Do not top up with any oil different from the oil used in the machine. If necessary, drain all the oil and fill the tank with oil of the available brand. DANGER •...

  • Page 160: Maintenance Notes

    • Use only Komatsu Utility genuine spare parts. • Do not mix different types of oil. • Unless specified otherwise, the oils and the coolant used by Komatsu Utility to fill the tanks before the delivery of the machine are the following:...

  • Page 161: Fuel

    • The required standards for permanent antifreeze are the following: SAE-J1034 and FEDERAL STANDARD O-A- 548D. In case of doubt regarding the compliance of the antifreeze used with the standards, contact your Komatsu Utility Dealer and ask for precise information.

  • Page 162: Notes Regarding The Electrical System

    • Do not remove or eliminate any electrical component installed on the machine and do not install any electrical component with characteristics different from those specified and approved by Komatsu Utility. • Be careful to keep the electrical system dry.

  • Page 163: Parts Subject To Wear That Periodically Need Changing

    MAINTENANCE NOTES 4.2.5 PARTS SUBJECT TO WEAR THAT PERIODICALLY NEED CHANGING The parts subject to wear such as filters, bucket teeth, etc. must be replaced according to the periodic mainte- nance intervals prescribed or when they reach the wear limit. The timely change of these parts ensures an economic use of the machine.

  • Page 164: Fuel, Coolant And Lubricants

    FUEL, COOLANT AND LUBRICANTS 4.3 FUEL, COOLANT AND LUBRICANTS PROPER SELECTION ACCORDING TO THE AMBIENT TEMPERATURE CAPACITY (l) AMBIENT TEMPERATURE RESERVOIR FLUID 50°C filling Change 104 122°F SAE 10W SAE 30 Engine oil pan SAE 40 • API CD SAE 10W-30 SAE 5W-30 SAE 10W Hydraulic system...
  • Page 165 • Use engine oil with CD classification; if oil with CC classification is used, reduce the engine oil change interval by a half. • Use Komatsu Utility genuine products whose characteristics have been specifically formulated and approved for use in the engine, in the equipment hydraulic circuit, in the reduction gears and in the transmission.

  • Page 166: Homologated Synthetic Biodegradable Lubricants Type Hees

    FUEL, COOLANT AND LUBRICANTS 4.3.1 HOMOLOGATED SYNTHETIC BIODEGRADABLE LUBRICANTS TYPE HEES Our machines can be filled with synthetic biodegradable hydraulic oil type HEES not of plant origin and therefore the use of the oils indicated in the following table is authorized and recommended : SUPPLIER HEES SYNTHETIC BIODEGRADABLE OIL KOMATSU...

  • Page 167: Driving Torques For Screws And Nuts

    DRIVING TORQUES FOR SCREWS AND NUTS 4.4 DRIVING TORQUES FOR SCREWS AND NUTS 4.4.1 STANDARD DRIVING TORQUES Nm (Newton metre): 1 Nm = 0.102 kgm 10.9 Thread Pitch Spanner size diameter (mm) (mm) (mm) 0.96 ± 0.1 9.5 ± 1 1.3 ±...

  • Page 168: Lubrication

    LUBRICATION 4.5 LUBRICATION 4.5.1 LUBRICATION DIAGRAM IMPORTANT • For the lubrication procedures for the single points, see «4.7 MAINTENANCE PLAN». • The type of lubricant to be used is indicated in the lubricant table (see «4.3 FUEL, COOLANT AND LU- BRICANTS»).

  • Page 169: Periodical Change Of The Components Connected With Safety

    PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY 4.6 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY To ensure safety at any moment while driving and using the machine, the operator must carry out all the periodic maintenance operations prescribed. Furthermore, the operator must periodically change the components indicat- ed in the table in the following page, which are especially related to safety and fire-prevention rules.

  • Page 170: Critical Parts For Safety

    PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY 4.6.1 CRITICAL PARTS FOR SAFETY FUEL SUPPLY SYSTEM Components related to safety that periodically need changing Q.ty Change interval Fuel pipe (Fuel tank - Precleaner) Fuel pipe (Precleaner - Fuel pump) Fuel pipe (Fuel pump - Fuel filter) Fuel pipe (Fuel filter - Injection pump) Every 2 years or 4000 hours, which-...
  • Page 171 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY STANDARD HYDRAULIC SYSTEM Components related to safety that periodically need changing Q.ty Change interval Hydraulic pipe (Travel pump delivery) Every 2 years or 4000 hours, which- Hydraulic pipe (Machine function pump delivery) ever occurs first •...
  • Page 172 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY Components related to safety that periodically need changing Q.ty Change interval Hydraulic pipe (Lifting cylinder) Every 2 years or Hydraulic pipe (Bucket cylinder) 4000 hours, which- ever occurs first Hydraulic pipe (Auxiliary hydraulic kit) RWA35950...
  • Page 173 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY HIGH-FLOW HYDRAULIC SYSTEM Components related to safety that periodically need changing Q.ty Change interval Hydraulic pipe (Travel pump delivery) Every 2 years or Hydraulic pipe (Machine function pump delivery) 4000 hours, which- ever occurs first Hydraulic pipe (Flow rate increase pump delivery) •...
  • Page 174 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY Components related to safety that periodically need changing Q.ty Change interval Hydraulic pipe (Lifting cylinder) Every 2 years or Hydraulic pipe (Bucket cylinder) 4000 hours, which- ever occurs first Hydraulic pipe (Auxiliary hydraulic kit) RWA35970...
  • Page 175 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY OPERATORíS SAFETY Components related to safety that periodically Q.ty Change interval need changing Safety belt Every 4 years RWAA11670...

  • Page 176: Maintenance Plan

    MAINTENANCE PLAN 4.7 MAINTENANCE PLAN 4.7.1 WHEN REQUIRED PART OPERATION PAGE Air cleaner Check, clean or change Front and rear wheels Rotate tyres Fuel tank Drain condensate Parking brake Release 4.7.2 CHECKS BEFORE STARTING PART OPERATION PAGE Various checks — Coolant Check and top up Fuel tank...
  • Page 177 MAINTENANCE PLAN 4.7.5 MAINTENANCE AFTER THE FIRST 250 HOURS OF OPERATION (Operations to be carried out together with those prescribed at point ´4.7.6 MAINTENANCE EVERY 250 HOURS OF OPERATION») PART OPERATION PAGE Hydraulic oil drain filter Change cartridge 4.7.6 MAINTENANCE EVERY 250 HOURS OF OPERATION PART OPERATION PAGE...
  • Page 178 MAINTENANCE PLAN 4.7.9 MAINTENANCE EVERY 1000 HOURS OF OPERATION PART OPERATION PAGE Final transmission Change oil Hydraulic oil and suction filter Change oil and filter Engine valves Check clearance 4.7.10 MAINTENANCE EVERY 2000 HOURS OF OPERATION PART OPERATION PAGE Coolant Change Suction filter Change...

  • Page 179: When Required

    MAINTENANCE PLAN 4.7.1 WHEN REQUIRED 4.7.1.a CHECKING, CLEANING OR CHANGING THE AIR CLEANER CARTRIDGE DANGER • Remove the air cleaner only after stopping the engine and do not start the engine if the air cleaner is open. • Always wear goggles while cleaning the filter. •...

  • Page 180: Tyre Rotation

    MAINTENANCE PLAN To change the safety cartridge after removing the primary element, proceed as follows: 1 - Remove the used safety cartridge (5) and replace it with a new one. IMPORTANT • In case of doubts on the efficiency of the gasket, immediately change it. 4 - Put back the air cleaner.

  • Page 181: Draining The Fuel Tank

    MAINTENANCE PLAN 4.7.1.c DRAINING THE FUEL TANK DANGER • When draining the fuel tank, avoid spilling fuel, since this may cause fires. • If some fuel is accidentally spilled, clean the dirty area im- mediately, in order to prevent it from getting slippery and to avoid fires.

  • Page 182: Releasing The Parking Brake

    MAINTENANCE PLAN 4.7.1.d RELEASING THE PARKING BRAKE DANGER • In case of failure of the hydraulic system and before remov- ing the machine, release the negative brake installed on the travel motors. The release of the parking brake is obtained by acting on the neg- ative brake installed on the travel motors, according to the follow- ing procedure.

  • Page 183: Checks Before Starting

    • Dirt, oil and fuel spread in the engine compartment near the hot areas may cause fires and damage the machine. Check if there are leakages frequently and carry out the necessary repairs immediately; if this occurs re- peatedly, contact your Komatsu Utility Dealer. Before starting the engine, check: 1. if there are loose screws or nuts;...

  • Page 184: Checking The Fuel Level

    MAINTENANCE PLAN 4.7.2.c CHECKING THE FUEL LEVEL DANGER • When refuelling, avoid spilling fuel to prevent any risk of fire. If some fuel should inadvertently be spilled, clean the dirty area immediately. • Fuel is flammable; neither use naked flames, nor smoke while refuelling.

  • Page 185: Checking The Engine Oil Level

    MAINTENANCE PLAN 4.7.2.d CHECKING THE ENGINE OIL LEVEL MAX. DANGER MIN. • Soon after the machine has been stopped the engine is very hot and may cause burns; let the engine cool down before carrying out any check. The dipstick can be reached by raising the engine hood (see “3.5.1 ENGINE HOOD”).

  • Page 186: Checking The Oil Level In The Hydraulic Circuit

    MAINTENANCE PLAN 4.7.2.e CHECKING THE OIL LEVEL IN THE HY- DRAULIC CIRCUIT DANGER • The oil level in the hydraulic circuit must be checked with cold oil and the machine positioned on a level surface with the bucket resting on the ground. •...

  • Page 187: Checking The Fuel Filter For Sediments And Water

    • If there are signs of short circuit on the cables, find out the cause and repair them; always contact your Komatsu Utility Dealer for the troubleshooting. Make sure that there are no disconnected cables or signs of short circuits in the electrical system.

  • Page 188: Maintenance After The First 50 Hours Of Operation

    MAINTENANCE PLAN 4.7.3 MAINTENANCE AFTER THE FIRST 50 HOURS OF OPERATION These maintenance operations must be carried out after the first 50 hours of operation, together with those to be carried out “EVERY 50 HOURS”. • CHECK THE GEARING CHAIN TENSION •...

  • Page 189: Maintenance After The First 250 Hours Of Operation

    MAINTENANCE PLAN 4.7.5 MAINTENANCE AFTER THE FIRST 250 HOURS OF OPERATION These maintenance operations must be carried out after the first 250 hours of operation, together with those to be carried out “EVERY 250 HOURS”. • HYDRAULIC OIL DRAIN FILTER For details on the various maintenance operations, see section “4.7.8 MAINTENANCE EVERY 500 HOURS OF OPERATION”.

  • Page 190: Checking The Battery Electrolyte Level

    MAINTENANCE PLAN 4.7.6.b CHECKING THE BATTERY ELECTROLYTE LEVEL DANGER • Check the level only after stopping the engine and if necessary add distilled water only before starting work. • Always wear safety goggles and waterproof gloves. • To prevent gas explosions, do not use naked flames, do not smoke and avoid producing sparks due to short circuits.

  • Page 191: Checking The Gearing Chain Tension

    Repeat this operation also for the opposite wheel. IMPORTANT • Check the tension on the front and rear wheels and if the slack exceeds 6 mm, contact your Komatsu Utility Dealer. RWAA11700 RWA32530 Max. 6mm (0.24 in)
  • Page 192 MAINTENANCE PLAN ADJUSTING THE CHAINS DANGER • The adjustment must be carried out with the machine parked on a firm, level and not slippery surface. • Before carrying out the adjustment, take all the necessary safety precautions. RWAA10190 CAUTION • When adjusting the hub-holding plate, do not loosen the fastening nuts by giving them more than 2 turns, in order to prevent any oil leakage.

  • Page 193: Cleaning The Outside Of The Radiators

    MAINTENANCE PLAN 4.7.6.d CLEANING THE OUTSIDE OF THE RADIA- TORS DANGER • If compressed air, steam or water are directed against a person, they may cause injuries. Always wear an eye shield and safety shoes. The outside of the radiators must be cleaned with a jet of com- pressed air and, if necessary, with a low-pressure water or steam RWAA10210 washing cycle;...

  • Page 194: Checking The Oil Level In The Final Transmissions

    MAINTENANCE PLAN 4.7.6.f CHECKING THE OIL LEVEL IN THE FINAL TRANSMISSIONS This check must be carried out on each transmission, with the machine at rest on level ground. The check is visual and serves to verify that the lubricant reaches the height of the hole (1);...

  • Page 195: Lubricating The Joints

    MAINTENANCE PLAN 4.7.6.g LUBRICATING THE JOINTS IMPORTANT • Clean the grease nipples before applying the greasing pump. • After lubrication, remove any excess grease. • If the machine is used in difficult conditions, perform these maintenance operations more frequently. These maintenance operations must be carried out with the arm completely lowered and the bucket resting on the ground.

  • Page 196: Changing The Engine Oil

    MAINTENANCE PLAN 4.7.6.h CHANGING THE ENGINE OIL DANGER • Soon after the machine has been stopped the engine oil is very hot and may cause burns; let the engine cool down until it reaches a temperature of 40-45ºC before draining the oil.

  • Page 197: Changing The Engine Oil Filter

    MAINTENANCE PLAN Some versions of the machine come with special safety drain plugs and to change the oil it is necessary to proceed as follows. Remove the plug (7), apply the special union provided and screw manually until the oil flows out. At the same time, carry out the change procedures prescribed for the standard version.

  • Page 198: Maintenance After The First 500 Hours Of Operation (Only For Machines Filled With Synthetic Biodegradable Oil Type Hees)

    MAINTENANCE PLAN 4.7.7 MAINTENANCE AFTER THE FIRST 500 HOURS OF OPERATION (Only for machines filled with synthetic biodegradable oil type HEES) These maintenance operations must be carried out after the first 500 hours of operation, together with those to be carried out “EVERY 500 HOURS”.
  • Page 199 MAINTENANCE PLAN BLEEDING THE CIRCUIT After filling the tank, turn the ignition key to position ìIî and wait for approximately 15-20 seconds, in such a way as to bleed the fuel supply circuit. IMPORTANT • After bleeding the circuit, turn the ignition key to position «...

  • Page 200: Changing The Hydraulic Oil Drain Filter

    MAINTENANCE PLAN 4.7.8.b CHANGING THE HYDRAULIC OIL DRAIN FILTER DANGER DANGER • L’olio idraulico, appena fermata la macchina è molto caldo; • Soon after the machine has been stopped the hydraulic oil lasciarlo raffreddare fino a 40-45°C prima di eseguire la is very hot;...

  • Page 201: Changing The Fuel Pump Precleaner

    MAINTENANCE PLAN 4.7.8.c CHANGING THE FUEL PUMP PRECLEANER DANGER • Change the precleaner at the end of work, when the engine has cooled down to 40-45º C. • When these operations are carried out, fuel may be spilled; clean the dirty areas immediately, in order to prevent any risk of slipping or fire.

  • Page 202: Draining The Hydraulic Oil Tank (Only For Machines Filled With Synthetic Biodegradable Oil Type Hees)

    MAINTENANCE PLAN 4.7.8.d DRAINING THE HYDRAULIC OIL TANK (Only for machines filled with synthetic bi- odegradable oil type HEES) DANGER • Lower the loader arm completely, rest the bucket on to the ground and, after stopping the engine, eliminate the residu- al pressures that may be present in the equipment (by op- erating the controls more than once) and lock the safety bars (see “3.3.5 pos.
  • Page 203 MAINTENANCE PLAN 2 - Loosen the lower plug (2) until the condensate has flown out of the tank completely. Use a 12 mm hexagon spanner. 3 - Put back the lower plug (2), the filling cap (1) and close the rear panel and the engine hood.

  • Page 204: Maintenance Every 1000 Hours Of Operation

    MAINTENANCE PLAN 4.7.9 MAINTENANCE EVERY 1000 HOURS OF OPERATION These operations must be carried out together with those to be carried out EVERY 50, 250, 500 HOURS. 4.7.9.a CHANGING THE OIL IN THE FINAL TRANSMISSION DANGER • Oils, filters, coolants and batteries are considered special waste and must be collected and disposed of according to the anti-pollution regulations in force.

  • Page 205: Changing The Hydraulic System Oil And Cleaning The Suction Filter

    MAINTENANCE PLAN 4.7.9.b CHANGING THE HYDRAULIC SYSTEM OIL AND CLEANING THE SUCTION FILTER CAUTION • On machines filled with synthetic biodegradable hydraulic oil type HEES the oil must be changed after the first 500 hours of operation and successively every 1000 hours, and in any case at least once a year.
  • Page 206 MAINTENANCE PLAN 2 - Remove the lower plug (2) and let the used oil flow out com- pletely, gathering it in a container with suitable capacity. Use a 12 mm hexagon spanner. 3 - Once the oil has been drained, disconnect the suction pipe (3) and remove the flange (4) after removing the screws (5).

  • Page 207: Checking And Adjusting The Engine Valve Clearance

    RWAA12570 RWAA12580 4.7.9.c CHECKING AND ADJUSTING THE ENGINE VALVE CLEARANCE Since the check and adjustment of the engine valve clearance require the use of special tools, have these opera- tions carried out by your Komatsu Utility Dealer.

  • Page 208: Maintenance Every 2000 Hours Of Operation

    MAINTENANCE PLAN 4.7.10 MAINTENANCE EVERY 2000 HOURS OF OPERATION Carry out these operations together with those to be performed EVERY 50, 250, 500 and 1000 HOURS. 4.7.10.a CHANGING THE COOLANT DANGER • Soon after the machine has been stopped the coolant is very hot and under pressure and it may cause serious burns;...
  • Page 209 MAINTENANCE PLAN 5 - Start the engine and let it idle for a few minutes; check the lev- el again and if necessary top up before putting back the upper cap (1). 6 - Fill the tank (4) until reaching the maximum level. 7 - Close the rear panel and the engine hood.

  • Page 210: Changing The Suction Filter

    MAINTENANCE PLAN 4.7.10.b CHANGING THE SUCTION FILTER DANGER • Lower the loader arm completely, rest the bucket on to the ground, stop the engine, eliminate the residual pressures that may be present in the equipment (by operating the controls more than once) and lock the safety bars (see “3.3.5 pos.

  • Page 211: Checking The Alternator And The Starter

    RWA36400 4.7.10.c CHECKING THE ALTERNATOR AND THE STARTER For any inspection and/or repair, contact your Komatsu Utility Dealer. If the engine is started frequently, the alternator and the starter should be inspected every 1000 hours of operation.
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  • Page 213: Technical Specifications

    TECHNICAL SPECIFICATIONS...

  • Page 214: Technical Data

    TECHNICAL DATA 5.1 TECHNICAL DATA 5.1.1 STANDARD MACHINE OVERALL DIMENSIONS IMPORTANT • The weight of the machine increases by 200 kg when it is equipped with solid tyres. • If the bucket is provided with teeth, the machine length increases by 100 mm. •...
  • Page 215 TECHNICAL DATA OVERALL DIMENSIONS WITH BUCKET L 1460 AND TYRES (7.00x16.5) 1178 1290 3200 1460 RWA35860 OVERALL DIMENSIONS WITH BUCKET L 1730 AND TYRES (10x16.5) 1250 1290 3200 1730 RWA35850...

  • Page 216: Machine Overall Dimensions With Optional Equipment

    TECHNICAL DATA 5.1.2 MACHINE OVERALL DIMENSIONS WITH OPTIONAL EQUIPMENT IMPORTANT • The weight of the machine increases by 200 kg when it is equipped with solid tyres. MACHINE OVERALL DIMENSIONS WITH EXCAVATOR (E30) 2210 1640 4120 1550 RWA35880...
  • Page 217 TECHNICAL DATA MACHINE OVERALL DIMENSIONS WITH ASPHALT CUTTER 1250 1780 1550 3690 1580 RWA35870...

  • Page 218: Technical Characteristics

    TECHNICAL DATA 5.1.3 TECHNICAL CHARACTERISTICS TOTAL MASS Standard machine max. total mass ..........kg 2670 Max.
  • Page 219 TECHNICAL DATA SOLID TYRES SIZE MAKE 10x16.5 AIR BOSS...
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  • Page 221 AUTHORISED OPTIONAL EQUIPMENT...

  • Page 222: Authorized Optional Equipment

    The installation of optional accessories or equipment other than those authorized by Komatsu Utility shortens the life of the machine and may also cause problems concerning safety. It is advisable to contact a Komatsu Utility Dealer before installing any accessory not indicated in this operation and maintenance manual.

  • Page 223: Precautions Regarding The Installation Of Equipment

    AUTHORIZED OPTIONAL EQUIPMENT 6.1.2 PRECAUTIONS REGARDING THE INSTALLATION OF EQUIPMENT DANGER • The use of lengthened work equipment reduces the stability of the machine. If it is necessary to go up or down a slope, be particularly careful, since the machine may lose its bal- ance and overturn.

  • Page 224: Characteristics Of The Standard Machine Optional Equipment

    AUTHORIZED OPTIONAL EQUIPMENT 6.1.3 CHARACTERISTICS OF THE STANDARD MACHINE OPTIONAL EQUIPMENT (Specific weight of the handled material = 1.8 t/cu m) MAX. DIMENSIONS MAX. MAX. MAX. SAE MAX. OPERATING WEIGHT CAPACITY EQUIPMENT FLOW RATE Width Height PRESSURE (l/min.) (kg) (cu m) (mm) (mm) (bar)

  • Page 225: Characteristics Of The Optional Equipment Of The Machine Version With High-Flow Hydraulic System

    AUTHORIZED OPTIONAL EQUIPMENT 6.1.4 CHARACTERISTICS OF THE OPTIONAL EQUIPMENT OF THE MA- CHINE VERSION WITH HIGH-FLOW HYDRAULIC SYSTEM (Specific weight of the handled material = 1.8 t/cu m) MAX. DIMENSIONS MAX. MAX. MAX. SAE MAX. OPERATING FLOW WEIGHT CAPACITY EQUIPMENT PRESSURE Width Height...

  • Page 226: Changing The Authorized Equipment

    CHANGING THE AUTHORIZED EQUIPMENT 6.2 CHANGING THE AUTHORIZED EQUIPMENT DANGER • Stop the machine on a firm and level surface and lower the equipment to the ground. • Before getting off the machine, stop the engine, release the residual pressures by moving the equipment control lever more than once in all directions and lock the safety bars (see “3.3.5 pos.

  • Page 227: Connecting The Hydraulic Circuit

    (1) and (2). The rapid coupling must be in compliance with the ISO 8434-3 standard. IMPORTANT • In case of doubts regarding the connection of the hydraulic circuit to the equipment, contact your Komatsu Utility Deal- RWAA12680 RWAA11790 1" UNS 1" UNS...
  • Page 228 CHANGING THE AUTHORIZED EQUIPMENT RWAA11830 1"3/16 UN 1"3/16 UN RWA36110...

  • Page 229: Connecting The Return Circuit With Direct Drainage Into The Tank

    The return system is positioned on the left side of the loader arm and the equipment drain pipe must be connected to the union (1). IMPORTANT • In case of doubts regarding the connection of the hydraulic circuit to the equipment, contact your Komatsu Utility Deal- RWAA11810 1" UNS RWA36100...

  • Page 230: Preparing The Machine For The Use Of The Excavator

    CHANGING THE AUTHORIZED EQUIPMENT 6.2.4 PREPARING THE MACHINE FOR THE USE OF THE EXCAVATOR After the installation of the excavator, make sure that the mechan- ical and hydraulic connections have been carried out correctly and proceed as follows. 1 - Press the auxiliary kit control pedal with your toe until engag- ing it in position (B);...

  • Page 231: Pallet Forks

    PALLET FORKS 6.3 PALLET FORKS CAUTION • Before using the forks for any operation, the operator must get acquainted with the increased dimen- sions of the machine and must also practise the use of the swinging movements. • After grasping the material with the forks and before lifting the load, swing the equipment in such a way as to lift the points and prevent the load from slipping.
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