Page 1 Operation & Maintenance WEAM009300 Manual PC14R PC14R -3HS HYDRAULIC EXCAVATOR SERIAL NUMBER PC14R F40003 and up PC14R F50003 -3HS 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 maintaining this machine.
Page 3: Foreword 1.1 Foreword
Over the years Komatsu Dealers have gathered considerable experience in customer service. If more information is needed, do not hesitate to contact your Komatsu Dealer: he always knows how to get the best performance from the machine, he can recommend the equipment that is most suitable for specific needs and can provide the technical assistance necessary for any change that may be required to conform the machine to the safety standards and traffic rules.
Page 4: Information On Safety
This word is used to indicate a useful piece of information. Komatsu cannot reasonably predict every circumstance that might involve a potential hazard during the operation or maintenance of the machine; for this reason, the safety warnings included in this manual and applied onto the machine may not include all possible safety precautions.
Page 5 WARNING It is strictly forbidden to modify the setting of the hydraulic system safety valves; Komatsu cannot be held liable for any damage to persons, property or the machine, if this has been tampered with by modifying the standard settings of the hydraulic system.
Page 6: Introduction
1.3 INTRODUCTION 1.3.1 INTENDED USE OF THE MACHINE The Komatsu machines described in this manual have been designed and constructed to be used mainly for EXCAVATION and EARTH-MOVING OPERATIONS. With the appropriate safety systems, you can use the machine with the optional tools provided they have the characteristics included in point "6.1 AUTHORISED TOOLS".
Page 7: Running-In
INTRODUCTION 1.3.4 RUNNING-IN Every machine is scrupulously adjusted and tested before delivery. A new machine, however, must be used carefully for the first 100 hours, in order to ensure proper running-in of the various components. If the machine is subjected to excessive work load at the beginning of operation, its potential productivity and its functionality will be shortly and untimely reduced.
Page 8: Product Identification
PRODUCT IDENTIFICATION 1.4 PRODUCT IDENTIFICATION The Komatsu excavator 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 be communicated to the Dealer when requiring assistance and ordering spare parts.
Page 9: Engine Serial Number And Exhaust Gas Emission Plate
PRODUCT IDENTIFICATION 1.4.3 ENGINE SERIAL NUMBER AND EXHAUST GAS EMISSION PLATE The engine serial number is stamped on the plate positioned on the engine itself. RKA16540 The exhaust gas emission plate is applied to the counterweight. RKA16550 1.4.4 TRAVEL REDUCTION GEAR SERIAL NUMBER The serial number is stamped on the plate positioned inside the travel reduction gear and can be seen after removing the cover...
Page 10: Swing Reduction Gear Serial Number
PRODUCT IDENTIFICATION 1.4.5 SWING REDUCTION GEAR SERIAL NUMBER The serial number is stamped on the plate positioned on the upper side of the swing motor. RKAB5920 1.4.6 CAB SERIAL NUMBER The serial number is stamped on the plate positioned on the upper left side.
Page 11: Serial Numbers And Dealer's Address
PRODUCT IDENTIFICATION 1.4.7 SERIAL NUMBERS AND DEALER’S ADDRESS Machine no. Model Product identification number (PIN) Engine no. Travel reduction gear no. Swing reduction gear no. Cab No. Dealer: Address: Tel. Contact person: NOTES: WEAM009300...
Page 12: Komtrax System
Contact a Komatsu dealer before selling or exporting any machine fitted with a KOMTRAX equipment. The KOMTRAX system can be removed or disabled by the Komatsu dealer as required, in case the machine is sold or exported.
Page 13: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS FOREWORD FOREWORD............................INFORMATION ON SAFETY ........................ INTRODUCTION ........................... 1.3.1 INTENDED USE OF THE MACHINE ..................1.3.2 IMPROPER OR UNAUTHORIZED USES................1.3.3 MAIN CHARACTERISTICS...................... 1.3.4 RUNNING-IN ..........................1.3.5 POSITIONS AND DIRECTIONS OF THE MACHINE............... PRODUCT IDENTIFICATION ....................... 1.4.1 MACHINE SERIAL NUMBER ....................
Page 14 TABLE OF CONTENTS 2.3.4 ROOM VENTILATION ......................2.3.5 PRECAUTIONS TO BE TAKEN FOR THE LIGHTS ..............2.3.6 CLEANING THE WINDOWS AND CHECKING THE WINDSHIELD WIPER BLADES.... PRECAUTIONS TO BE TAKEN WHEN WORKING................2.4.1 STARTING THE ENGINE ....................... 2.4.2 CHECK THE DIRECTION BEFORE STARTING THE MACHINE .......... 2.4.3 HAND SIGNALS........................
Page 15 TABLE OF CONTENTS 2.8.23 COMPRESSED AIR ......................... 2.8.24 PERIODICAL CHANGE OF THE PARTS THAT ARE CRITICAL FOR SAFETY..... 2.8.25 PRECAUTIONS TO BE TAKEN WHEN HANDLING TECHNOPOLYMERS AND ELASTOMERS 2.8.26 PRECAUTIONS TO BE TAKEN WHEN USING SYNTHETIC BIODEGRADABLE OIL TYPE HEES THE MACHINE AND ITS OPERATIONS MACHINE ILLUSTRATIONS ........................
Page 16 TABLE OF CONTENTS 3.3.7 SWINGING THE TURRET ....................... 3.3.8 WORK EQUIPMENT CONTROLS AND FUNCTIONS ............3.3.9 UNAUTHORIZED OPERATIONS .................... 3.3.10 PRECAUTIONS FOR USE....................... 3.3.11 PRECAUTIONS TO BE TAKEN WHEN TRAVELLING ON SLOPES........3.3.12 GETTING THE MACHINE OUT OF MUD ................3.3.13 OPERATIONS THAT CAN BE PERFORMED WITH THE HYDRAULIC EXCAVATOR ..
Page 17 4.2.1.1 OIL........................... 4.2.1.2 FUEL ........................4.2.1.3 COOLANT ....................... 4.2.1.4 KOWA (KOMATSU OIL WEAR ANALYSIS) ............... 4.2.1.5 STORING OIL AND FUEL ..................4.2.1.6 FILTERS........................4.2.2 NOTES ON THE MAINTENANCE OF THE ELECTRICAL SYSTEM ........4.2.3 NOTES ON THE MAINTENANCE OF THE HYDRAULIC SYSTEM ........
Page 18 TABLE OF CONTENTS 4.9.5 MAINTENANCE EVERY 500 HOURS OF OPERATION ............4.9.5.a LUBRICATION ......................4.9.5.b CHANGING THE ENGINE OIL AND THE ENGINE OIL FILTER CARTRIDGE ..4.9.5.c CHANGING THE FUEL FILTER CARTRIDGE ............4.9.5.d CHECKING THE OIL LEVEL IN THE FINAL REDUCTION GEARS ...... 4.9.5.e CHECKING AND CLEANING THE FINS OF THE RADIATOR AND OF THE EXCHANGER......................
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 or to your Komatsu Dealer. In case of replacement of a component provided with a safety plate, make sure that such a plate is applied also to the new part.
Page 21: Pictograms And Relevant Meanings
SAFETY, NOISE AND VIBRATION PLATES 2.1.2 PICTOGRAMS AND RELEVANT MEANINGS The warning and danger plates applied onto the machine include or are accompanied by pictograms. The staff in charge with the operation and maintenance of the machine must be perfectly familiar with the symbols contained in the pictograms;...
Page 22 SAFETY, NOISE AND VIBRATION PLATES PLATFORM LIFTING SAFETY PLATE 22L-98-R2390 RKA01380 FRONT WINDSCREEN LOCKING (only with cab) Make sure that the front windshield is always locked. 09803-A0481 HYDRAULIC OIL TOPPING UP (Only for machines in which synthetic biodegradable oil type HEES is used).
Page 23 SAFETY, NOISE AND VIBRATION PLATES HYDRAULIC OIL TOPPING UP RWA00050 REFUELLING RWA00040 ENGINE OIL FILTER RWA00080 FUEL FILTER RWA00060 ENGINE AIR INTAKE FILTER RWA00090 ENGINE COOLANT RWA00130 WEAM009300...
Page 24 SAFETY, NOISE AND VIBRATION PLATES ENGINE COOLANT PRESSURE RWA00110 HYDRAULIC OIL LEVEL RWA00100 HYDRAULIC OIL FILTER RWA00070 POWER OUTLET 12 V RWA00120 ANCHORAGE POINT RWA00200 LIFTING POINT RWA04920 EMERGENCY EXIT (machines with cab) RWA00190 WEAM009300...
Page 25 SAFETY, NOISE AND VIBRATION PLATES LIFTING CAPACITIES W=350mm kg 22 225kg 180kg 265kg 145kg 145kg L=880mm 250kg 145kg 700kg 255kg 215kg L=1130mm 245kg 135kg 125kg > RKA22420 LIFTING CAPACITY (only for machines equipped with variable width lower car) W=350mm kg 22 225kg 225kg 195kg 220kg 285kg 355kg 155kg 220kg 155kg 220kg...
Page 26: Position Of The Noise Plates On Machines With Canopy
Do not use fuel, petrol or solvents. If the plates are damaged, ask for new ones to Komatsu or to your Komatsu Dealer. In case of replacement of a component provided with a noise...
Page 27: Position Of The Noise Plates On Machines With Cab
Do not use fuel, petrol or solvents. If the plates are damaged, ask for new ones to Komatsu or to your Komatsu Dealer. In case of replacement of a component provided with a noise...
Page 28: General Precautions
GENERAL PRECAUTIONS 2.2 GENERAL PRECAUTIONS 2.2.1 GENERAL SAFETY RULES Only trained and authorized staff can use the machine and perform maintenance operations. Follow all the safety rules, precautions and instructions when using the machine or performing maintenance operations. When working with other operators or when the work site is often occupied by other operators, make sure that everyone knows and understands all the agreed signals and, in any case, that everyone works in such a way as to be able to see the machine and to be visible to the operator.
Page 29: Unauthorized Modifications
GENERAL PRECAUTIONS 2.2.4 UNAUTHORIZED MODIFICATIONS Any modification made without the authorization of Komatsu can involve hazards. Before making a modification, consult your Komatsu Dealer. Komatsu declines any responsibility for injury or damage caused by unauthorized modifications. 2.2.5 LEAVING THE OPERATOR SEAT When leaving the operator seat, even if temporarily, make sure that the machine is in a safe position.
Page 30 GENERAL PRECAUTIONS 3 - Attach the safety device for tower rotation control. RKAB9080 RKAB9090 4 - Lock the equipment control by shifting the safety lever (1) to the “locked” position (L). 5 - Stop the engine. (See "3.3.4 STOPPING THE ENGINE"). 6 - If you have to go so far away that you will not be able to see the machine, extract the ignition key.
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, neither when it is at rest nor when it is moving. When getting on or off the machine, always use the handles and the tracks; get on and off the machine very carefully. Do not hold or rest on the control levers.
Page 32: Preventing Fires Due To Fuel And Oil
GENERAL PRECAUTIONS 2.2.7 PREVENTING FIRES DUE TO FUEL AND OIL Fuel, oil and some types of antifreeze can easily ignite if they get in contact with a flame. Fuel is flammable and therefore very dangerous. Keep any naked flame away from flammable fluids. Stop the engine and do not smoke when refuelling.
Page 33: Preventing Damage Due To Asbestos Powder
GENERAL PRECAUTIONS 2.2.9 PREVENTING DAMAGE DUE TO ASBESTOS POWDER Inhaling asbestos powder is very dangerous. If the material to be handled contains asbestos fibres, it is compulsory to make sure that all the laws and safety regulations in this regard are respected. If the regulations in force concerning work in environments contaminated by asbestos fibres are not complied with, it is forbidden to use the machine.
Page 34: Precautions Concerning The Rops Structure
If the canopy is inadvertently hit or the machine overturns during work, the ROPS structure may be damaged, which consequently reduces its stiffness and the operator’s safety. In case of impact or damage, contact Komatsu or a Komatsu Dealer to have the canopy structure and resistance checked Do not remove the ROPS canopy for any reason whatsoever and avoid using the machine without canopy.
Page 35: Precautions To Be Taken Before Starting The Engine
(earth, stones, etc.). Check the seat belt and change it if it is broken or damaged. Replace any component only with homologated parts available at Komatsu or its Dealers. WEAM009300...
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, provide for proper ventilation or connect the engine exhaust pipe to a suction duct. The engine exhaust gases 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: Hand Signals
PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.3 HAND SIGNALS WARNING When it is necessary to position loads, make excavations or move the machine with reduced field of vision, the operator must be helped by another person standing on the ground and making signals to indicate the manoeuvres to be carried out, according to the specific signals defined by the relevant regulations.
Page 39 PRECAUTIONS TO BE TAKEN WHEN WORKING 3 - MOVE THE LOAD AWAY IN HORIZONTAL DIRECTION With an arm extended forwards and the hand in vertical position directed towards the load to be moved away, move the hand in the direction of the movement to be carried out. RKA15160 4 - BRING THE LOAD NEARER IN HORIZONTAL DIRECTION With an arm extended forwards and the hand in vertical...
Page 40 PRECAUTIONS TO BE TAKEN WHEN WORKING 9 - FOLD THE ARM With both hands clasped, point the thumbs inwards. RKA15220 10 - EXTEND THE ARM With both hands clasped, point the thumbs outwards. RKA15230 11 - FOLD THE BUCKET Keep one hand still and closed. Rotate the other hand vertically with the thumb pointed towards the clasped hand.
Page 41 PRECAUTIONS TO BE TAKEN WHEN WORKING 15 - TRAVEL STRAIGHT AHEAD Rotate the fists vertically indicating the turning direction of the wheels. RKA15280 16 - TRAVEL STRAIGHT AHEAD Rotate the fists vertically indicating the turning direction of the wheels. RKA15290 17 - DISTANCE TO BE COVERED With the hands raised and facing inwards, move the hands laterally indicating the distance to be covered.
Page 42 PRECAUTIONS TO BE TAKEN WHEN WORKING 21 - STOP THE ENGINE Pass thumb or forefinger across the throat. RKA15340 WEAM009300...
Page 43: Checks For Travelling In Reverse
PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.4 CHECKS FOR TRAVELLING IN REVERSE When operating in areas that may be hazardous or have poor visibility, designate a person to direct the movements of the machine and traffic on the work site. Make sure that no unauthorized person is within the machine operating range or in its travel direction.
Page 44: Moving On Slopes
PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.6 MOVING ON SLOPES Operations on slopes and on river or lake banks with damp ground may cause the machine to tip over or slip. On hills, banks or slopes, keep the bucket very close to the ground (20-30 cm from the ground), and in case of emergency quickly lower it to the ground to help the machine stop.
Page 45: Working On Slopes
PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.7 WORKING ON SLOPES Operations on slopes and on river or lake banks with damp ground may cause the machine to tip over or slip. When working on slopes (max. inclination 10°), avoid turning the turret, if possible, since this may cause the machine to lose balance and overturn.
Page 46 PRECAUTIONS TO BE TAKEN WHEN WORKING Do not carry out demolition work under the machine, since it may become unstable and tip over. When working on the top of buildings or other structures, check these structures and their strength before starting work. In fact, the buildings may collapse and cause serious injury or damages.
Page 47: Preventing Electrocution
PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.9 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 electric lines always respect the minimum safety distances prescribed by the competent authorities and by the accident-prevention rules in force.
Page 48: Preventing Damage Caused By The Work Equipment
PRECAUTIONS TO BE TAKEN WHEN WORKING 2.4.12 PREVENTING DAMAGE CAUSED BY THE WORK EQUIPMENT When working in tunnels, galleries, under electric cables or other ducts (air, telephone lines) and wherever the height is limited, proceed with the greatest care to prevent the bucket or the arms from causing any damage. 2.4.13 WORKING ON LOOSE GROUND Avoid operating the machine too close to the edge of cliffs, overhangs and deep ditches.
Page 49: Transporting The Machine On Motor Vehicles
TRANSPORTING THE MACHINE ON MOTOR VEHICLES 2.5 TRANSPORTING THE MACHINE ON MOTOR VEHICLES 2.5.1 LOADING AND UNLOADING THE MACHINE Loading and unloading the machine on/from a motor vehicle always involves potential hazards. Proceed with extreme care. Perform loading and unloading operations on firm, level ground. Ramp Maintain a safety distance from the edges of ditches or from road sides.
Page 50: Battery
BATTERY 2.6 BATTERY 2.6.1 PREVENTING RISKS THAT MAY BE DUE TO THE BATTERY Electrolytic batteries contain sulphuric acid, which can cause burns. It can also corrode clothing and make holes in it. In case of contact with battery acid, immediately wash the affected part with plenty of water.
Page 51: Precautions For The Removal Of The Machine
PRECAUTIONS FOR THE REMOVAL OF THE MACHINE 2.7 PRECAUTIONS FOR THE REMOVAL OF THE MACHINE Before removing the machine, make sure that all the controls are in neutral. Incorrect manoeuvres may cause serious damage, personal injury and even death. To move the machine, use properly dimensioned steel cables; do not use worn cables or cables with broken strands (A), deformed cables (B), twisted cables (C).
Page 52: Precautions For Maintenance
PRECAUTIONS FOR MAINTENANCE 2.8 PRECAUTIONS FOR MAINTENANCE 2.8.1 WARNING PLATES Before starting any maintenance operation, position the machine on a firm and level surface, lower the equipment to the ground, engage the safety locks of the equipment and the controls, and stop the engine. If another person starts the engine and operates the control levers while the operator is servicing the machine, this may result in serious injury or even death.
Page 53: Equipment
60 cm, in order not to damage the warning plates and the pictograms. If the plates are damaged, request Komatsu or your Komatsu Dealer to send you spare plates and change 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 54: Use Of The Engine During Maintenance
PRECAUTIONS FOR MAINTENANCE 2.8.7 USE OF THE ENGINE DURING MAINTENANCE During maintenance operations, make the engine run 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 necessary.
Page 55: Rules To Be Followed When Refuelling Or Adding Oil
PRECAUTIONS FOR MAINTENANCE 2.8.10 RULES TO BE FOLLOWED WHEN REFUELLING OR ADDING OIL Keep away from naked flames while refuelling or adding oil. Spilled fuel or oil make the ground slippery and may cause accidents; clean any dirty area immediately and carefully. Always tighten the safety caps of the fuel tank and of the hydraulic oil tank securely.
Page 56: Precautions To Be Taken When Handling The Battery And The Alternator
PRECAUTIONS FOR MAINTENANCE 2.8.13 PRECAUTIONS TO BE TAKEN WHEN HANDLING THE BATTERY AND THE ALTERNATOR When repairing the electrical system, disconnect the battery or turn the battery main switch anticlockwise to shut off power. IMPORTANT Disconnect first the negative earth cable (–) and then the positive cable (+).
Page 57: Precautions To Be Taken When Handling High-Pressure Oil
PRECAUTIONS FOR MAINTENANCE 2.8.16 PRECAUTIONS TO BE TAKEN WHEN HANDLING HIGH-PRESSURE OIL Do not forget that the work equipment circuits are always under pressure; for this reason, when it is necessary to add or drain hydraulic oil or to perform maintenance operations or inspections on the hydraulic circuit, it is advisable to lower the equipment to the ground and completely release the pressures and the residual pressure present in the tank.
Page 58: Precautions To Be Taken When Using High-Pressure Grease To Adjust The Track Tension
Do not attempt to remove the spring, since this may lead to serious accidents and even death. For any operation on the shock absorber unit, contact your Komatsu Dealer. 2.8.20 HYDRAULIC ACCUMULATOR The hydraulic accumulator contains pressurized nitrogen.
Page 59: Cooling Fan And Belt
PRECAUTIONS FOR MAINTENANCE 2.8.21 COOLING FAN AND BELT Be careful to the revolving parts and do not allow anyone to get too close to them, since clothes or limbs may get caught into them. If hands, clothes, or tools become entangled in the fan blades or the fan belt, they may be cut, torn or seriously injured/ damaged;...
Page 60: Precautions To Be Taken When Handling Technopolymers And Elastomers
PRECAUTIONS FOR MAINTENANCE 2.8.25 PRECAUTIONS TO BE TAKEN WHEN HANDLING TECHNOPOLYMERS AND ELASTOMERS DANGER Some components of the machine contain polymeric and elastomeric materials (Viton sealing rings, Teflon rings, piston rings made of fluoroelastomers, electric cable insulating materials, etc.). At ambient temperature and up to approximately 200°C these materials can be handled without taking special precautions, since they are completely inert.
Page 61: The Machine And Its Operations
THE MACHINE AND ITS OPERATIONS...
Page 62: Machine Illustrations
MACHINE ILLUSTRATIONS 3.1 MACHINE ILLUSTRATIONS 3.1.1 OVERALL VIEW OF THE MACHINE RKA22480 Bucket Track Bucket cylinder Sprocket Undercarriage Arm cylinder (10) Idler roller Boom (11) Cylinder blade Boom cylinder (12) Blade WEAM009300...
Page 63: Controls And Gauges
MACHINE ILLUSTRATIONS 3.1.2 CONTROLS AND GAUGES RKA22490 (16) Hour counter Operator seat (17) Translation speed increase warning light Scraper selector switch/variable width (if fitted) Control locking lever (18) Engine water temperature warning light Tool control left lever (19) Engine preheat warning light Pedal locking device (20) Engine oil pressure warning light...
Page 64: Instruments And Controls
INSTRUMENTS AND CONTROLS 3.2 INSTRUMENTS AND CONTROLS The following paragraphs describe the devices that are necessary for correct operation of the machine. To perform the required operations correctly and safely, it is important to understand the equipment operating methods and the meaning of the information displayed. 3.2.1 WARNING LIGHTS AND GAUGES (A): Emergency warning lights...
Page 65: Emergency Warning Lights
INSTRUMENTS AND CONTROLS 3.2.1.1 EMERGENCY WARNING LIGHTS CAUTION If a warning light does not go out or comes on when the engine is running, stop the machine immediately and try to find the cause of the failure. Engine oil pressure warning light Battery charge level warning light Engine oil pressure warning light This warning light comes on, together with the acoustic alarm,...
Page 66: Gauges
INSTRUMENTS AND CONTROLS 3.2.1.2 GAUGES Fuel gauge Hour meter Fuel gauge It indicates the fuel level in the tank and functions only when the ignition key is in position ON (see "3.2.2 pos. 1. Ignition switch"). F: maximum level. E: minimum level. If the quantity of fuel in the tank is less than 3.3 litres, the indicator reaches the red reserve area (A).
Page 67: Warning Lights
INSTRUMENTS AND CONTROLS 3.2.1.3 WARNING LIGHTS Engine preheating warning light Travel speed increase warning light Engine coolant temperature warning light Engine preheating warning light This warning light comes on when the ignition key is turned to the preheating position (HEAT) to start the engine at low temperatures.
Page 68 INSTRUMENTS AND CONTROLS Engine coolant temperature warning light This warning light comes on when the engine coolant exceeds the maximum temperature allowed; in this case, reduce the engine speed until the warning light goes out. If this inconvenience occurs again, make sure that the radiator is clean. RKA13940 WEAM009300...
Page 69: Switches And Push Buttons
INSTRUMENTS AND CONTROLS 3.2.2 SWITCHES AND PUSH BUTTONS RKA22500 Start-up switch Power socket Horn Windscreen wiper switch (machines with cab) Light switch Heating and ventilation switch (machines with cab) Translation speed selector switch (if available) Overhead lamp (machines with cab) Blade selector switch/variable width (if available) (10) Battery main switch...
Page 70 INSTRUMENTS AND CONTROLS Horn This button is positioned at the centre of the right lever knob and serves to send out a warning signal at the beginning of work and in case of danger. RKA10590 Light switch This is a two-position (ON-OFF) switch and is used to turn the lights on and to light up the warning lights and gauges display.
Page 71 INSTRUMENTS AND CONTROLS Blade/adjustable track gauge selection switch (if provided) WARNING Use the narrow track gauge only when it is necessary to go through narrow passages or when there is no other choice. For normal applications and digging operations, always select the wide track gauge.
Page 72 INSTRUMENTS AND CONTROLS Windshield wiper switch (machines with cab) Switch (7) activates the front windscreen wiper and it is also used as windscreen washer switch. The switch functions as described below: Windshield wiper only Press the switch to position (B) to start the windshield wiper. Position (A): windshield wiper off.
Page 73 INSTRUMENTS AND CONTROLS Overhead light switch (machines with cab) Use this switch (9) to switch on the overhead light. Position (A): light off. Position (B): light on. RKA16170 10. Battery main switch The battery main switch (10) is placed inside the engine compartment and the electrical current from the battery to the machine electrical system can be interrupted by turning the switch anticlockwise.
Page 74: Control Levers And Pedals
INSTRUMENTS AND CONTROLS 3.2.3 CONTROL LEVERS AND PEDALS RKA22530 Safety lever 1st boom swing control pedal (control locking lever) locking device Left work equipment control lever 1st boom swing control pedal Right work equipment control lever Tower rotation locking lever Accelerator lever (10) Pedal locking device...
Page 75 INSTRUMENTS AND CONTROLS Safety lever (control locking lever) WARNING Before leaving the driver seat, lower the equipment to the ground and shift the safety lever to the “locked” position (L). If the safety lever is not in the “locked” position and the control levers are touched by mistake, this may lead to serious injury.
Page 76 INSTRUMENTS AND CONTROLS 2. - 3. Work equipment control levers WARNING Before carrying out any manoeuvre with these levers, the operator must seat in the work position and fasten the seat belt. Before leaving the driver seat, lower the equipment to the ground, lock the controls with the safety lever and stop the engine.
Page 77 INSTRUMENTS AND CONTROLS Accelerator lever This lever is used to control the engine speed and power. (a) Minimum: push the lever completely forward. (b) Maximum: pull the lever completely backward. Use the accelerator with care, especially when the machine is under strain or is working in difficult conditions.
Page 78 INSTRUMENTS AND CONTROLS Travel levers NOTE The travel pedals indicated in the figure are optional and are supplied only upon request. WARNING Before carrying out any manoeuvre with these levers, the operator must seat in the work position and fasten the seat belt.
Page 79 INSTRUMENTS AND CONTROLS Boom swing control pedal locking device WARNING Always shift the safety lever to position (L) when the boom swing is not required, during travel and when parking the machine. If the control pedal is inadvertently pressed, this may cause serious accidents.
Page 80 INSTRUMENTS AND CONTROLS Tower rotation locking lever WARNING When the machine is moved and transported, the lever should be set to the locking position; place the lever in the locking position after positioning the upper tower parallel to the lower car. While the machine is moved, make sure that the upper tower is oriented towards the scraper;...
Page 81 INSTRUMENTS AND CONTROLS 12. Platform locking lever (machines with cab) WARNING Always keep to the warnings when tilting or closing the cab floor. Any operation carried out incorrectly may cause serious injury. Do not tilt or close the cab floor on slopes or if there is a strong wind.
Page 82: Cab (If Provided)
(ROPS/FOPS level 1). If there is a collision against the machine, or in case it turns over, have a Komatsu Dealer check that the cab complies with the stiffness and active safety standards the operator needs.
Page 83 INSTRUMENTS AND CONTROLS Seize the handles (A) at the right or left top of the front windscreen and push the locking levers (B) down to release the windscreen. RKAB9680 RKAB9690 Seize the handles (C) and (D), pull up the windscreen and push it until the lock (E) is tripped.
Page 84 INSTRUMENTS AND CONTROLS Closing WARNING When closing the windshield, lower it slowly and pay attention to your hands. Stop the machine on a level surface, lower the equipment completely to the ground, then stop the engine. Shift the safety lever to the “locked” position. Release the windscreen by means of the upper lock (E) lever.
Page 85: Door (Machines With Cab)
INSTRUMENTS AND CONTROLS 3.2.4.2 DOOR (machines with cab) WARNING When the cab door is opened or closed, always take the safety device lever to the locking position (L). If the control levers are not locked and are inadvertently operated, there is the risk of serious accidents.
Page 86: Side Sliding Window (Machines With Cab)
INSTRUMENTS AND CONTROLS 3.2.4.3 SIDE SLIDING WINDOW (machines with cab) WARNING When opening or closing the side window, always shift the safety lever to position “lock” (L). If the control levers are not locked and are inadvertently operated, there is the risk of serious accidents.
Page 87: Coverswith Lock
INSTRUMENTS AND CONTROLS 3.2.5 COVERSWITH LOCK Use the ignition key to open and close the covers with lock. For details on the position of the covers with lock, see "3.3.17 LOCKING THE MACHINE". Introduce the key completely (6 mm from the point where the key narrows), then turn it.
Page 88: Engine Hood
INSTRUMENTS AND CONTROLS 3.2.6 ENGINE HOOD WARNING 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 expressly prescribed for certain maintenance operations. When carrying out an inspection or maintenance operation inside the engine hood, always open it completely and make sure that it is kept open by the apposite rod.
Page 89: Radiator Cover
INSTRUMENTS AND CONTROLS 3.2.7 RADIATOR COVER WARNING When inspections or maintenance operations are required inside the radiators compartment, always open it completely. OPENING THE BATTERY COVER Release radiator cover lock (see "3.2.5 COVERSWITH LOCK"). RKA22710 Pull the radiator cover (2) and open it completely. CLOSING THE COVER Close the compartment (2) and lock it with the lock (1).
Page 90: Battery Cover
INSTRUMENTS AND CONTROLS 3.2.8 BATTERY COVER When inspections and maintenance operations are required inside the battery housing, remove the fixing screws (1) and completely remove the housing (2). RKA22730 After the inspections or maintenance operations, reassemble the battery housing (2). RKA22740 WEAM009300...
Page 91: Tilting The Cab Floor (Machines With Canopy)
If there is something wrong in the locking function when the cab floor is tilted, interrupt work and have the necessary repairs carried out by your Komatsu Dealer. Always fasten the platform fixing screws to the torque in compliance with the values included in the section "4.5.1 STANDARD TIGHTENING TORQUES FOR SCREWS AND NUTS".
Page 92 INSTRUMENTS AND CONTROLS Position blocks under the tracks in order to prevent the machine from moving. 9 J A 0 5 4 6 6 Open the engine hood (2) completely and make sure that it is kept open by the apposite rod (for further details, see "3.2.6 ENGINE HOOD").
Page 93 Tighten the cab floor fastening screws (3) applying the required torque. Tightening torque: 156.8 to 196 Nm NOTE If any screw is damaged, replace it with an original Komatsu part having the same size. Close the engine hood (2). WEAM009300...
Page 94: Tilting The Cab Floor (Machines With Cab)
If there is something wrong in the locking function when the cab floor is tilted, interrupt work and have the necessary repairs carried out by your Komatsu Dealer. Always fasten the platform fixing screws to the torque in compliance with the values included in the section "4.5.1 STANDARD TIGHTENING TORQUES FOR SCREWS AND NUTS".
Page 95 INSTRUMENTS AND CONTROLS Position blocks under the tracks in order to prevent the machine from moving. 9 J A 0 5 4 6 6 Open the engine hood (2) completely and make sure that it is kept open by the apposite rod (for further details, see "3.2.6 ENGINE HOOD").
Page 96 INSTRUMENTS AND CONTROLS After tilting the floor open, make sure that the locking pin (7) is inserted in the groove (9) of the locking plate (8). Insert the safety pin (10) into the hole (11) from the outside. 10. Turn until the coupling at the end of the safety pin (10) is completely engaged with the pin (12).
Page 97 Tighten the cab floor fastening screws (3) applying the required torque. Tightening torque: 156.8 to 196 Nm NOTE If any screw is damaged, replace it with an original Komatsu part having the same size. Close the engine hood (2). WEAM009300...
Page 98: Fuses
INSTRUMENTS AND CONTROLS 3.2.11 FUSES IMPORTANT When changing a fuse, make sure that the ignition key is in position OFF. 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 99: Main Fuse
INSTRUMENTS AND CONTROLS 3.2.12 MAIN FUSE IMPORTANT When changing a fuse, make sure that the ignition key is in position OFF. If the starter does not run when the ignition switch is turned to position ON, the fuse (1) may have blown. Open the cover on the left side of the machine to check the fuse and change it if necessary.
Page 100: Use Of The Machine And Related Controls
Always perform thorough checks and carry out the necessary repairs; if any fault occurs repeatedly, contact your Komatsu Dealer. Make sure that the cab floor is properly fastened with the screws (1). If it is not secured properly, it may cause serious injury.
Page 101: Checks To Be Carried Out Before Starting The Engine
(1) are correctly tightened. If there are loose screws, tighten them. If any anomaly is observed, carry out the necessary repairs or have them carried out by your Komatsu Dealer. 3.3.1.2 CHECKS TO BE CARRIED OUT BEFORE STARTING THE ENGINE Carry out the checks listed below every day before starting the engine.
Page 102 USE OF THE MACHINE AND RELATED CONTROLS CHECKING THE ENGINE OIL LEVEL AND TOPPING UP WARNING Soon after the machine has been stopped the engine is very hot and may cause burns; let the engine cool down to 40-45°C before carrying out any check. CAUTION When carrying out an inspection or maintenance operation inside the engine hood, always open it completely and make sure that it is kept open by the apposite rod.
Page 103 USE OF THE MACHINE AND RELATED CONTROLS CHECKING THE FUEL LEVEL AND REFUELLING WARNING When refuelling, avoid spilling fuel, since this may cause a fire hazard. If fuel is spilled, wipe it up immediately. Fuel is highly flammable; do not use naked flames and do not smoke when refuelling. Hold the fuel gun constantly in contact with the filler.
Page 104 USE OF THE MACHINE AND RELATED CONTROLS CHECKING THE OIL LEVEL IN THE HYDRAULIC TANK AND TOPPING UP WARNING Carry out this check when the oil is cold, with the machine positioned on level ground, bucket and arm cylinders retracted and bucket teeth resting on the ground. Before topping up, stop the engine and eliminate the residual pressure from the equipment circuits (by shifting the controls more than once) and from the tank by slowly loosening the filling cap.
Page 105 USE OF THE MACHINE AND RELATED CONTROLS Extend the boom, arm and bucket cylinders completely, as shown in the diagram on the right, and remove the filler cap. Put back the cap and pressurize the tank, lowering the equipment to the ground. IMPORTANT If a constant or abnormal decrease in the oil level is observed, thoroughly check the hydraulic circuit, the...
Page 106 OFF. If the wirings show traces of short circuits, contact your Komatsu Dealer, who will locate the fault and carry out any necessary repairs.
Page 107 Turn the ignition switch to position ON. Press the button positioned on the right lever and make sure that the horn functions correctly. If the horn does not sound, contact your Komatsu Dealer, who will carry out the necessary repairs. RKA10590...
Page 108: Adjustments
USE OF THE MACHINE AND RELATED CONTROLS 3.3.1.3 ADJUSTMENTS WARNING Adjust the position of the seat before starting work or when taking the place of another operator. Adjust the seat so that the control levers and the switches can be easily used by the operator seated with his back against the backrest.
Page 109 USE OF THE MACHINE AND RELATED CONTROLS SEAT BELT WARNING Before fastening the seat belt, make sure that the fastening brackets or the belt itself do not show any anomaly. If there are damaged or worn parts, change the belt. In any case, change the seat belt every 3 years, even if it seems to be in good conditions.
Page 110: Operations To Be Carried Out Before Starting The Engine
If a warning light or a gauge does not come on, this may be due to a faulty fuse or bulb, or to an interruption in the wirings, therefore it is advisable to contact a Komatsu Dealer, who will provide for the necessary repairs.
Page 111 If it does not function, this may be due to a faulty bulb, or to an interruption in the wirings, therefore it is advisable to contact a Komatsu Dealer, who will provide for the necessary repairs. 3) Press the horn button (7) to make sure that the horn functions correctly.
Page 112: Starting The Engine
USE OF THE MACHINE AND RELATED CONTROLS 3.3.2 STARTING THE ENGINE 3.3.2.1 STARTING WITH WARM ENGINE OR IN WARM CLIMATES WARNING Before starting the engine, carefully read the instructions and information regarding safety contained in this manual and make sure that you know the controls. From the moment at 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 and the rule of the road..
Page 113 USE OF THE MACHINE AND RELATED CONTROLS Turn the ignition key (3) to position START to start the engine. RYA17360 As soon as the engine starts, release the key (3), which will automatically return to position ON. RYA17370 WEAM009300...
Page 114: Starting With Cold Engine Or In Cold Climates
USE OF THE MACHINE AND RELATED CONTROLS 3.3.2.2 STARTING WITH COLD ENGINE OR IN COLD CLIMATES WARNING Before starting the engine, carefully read the instructions and information regarding safety contained in this manual and make sure that you know the controls. From the moment at 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 and the rule of the road..
Page 115 USE OF THE MACHINE AND RELATED CONTROLS Turn the ignition key (3) to the preheating position (HEAT) and make sure that the preheating warning light (4) comes After approximately 10 seconds, the warning light (4) goes out, indicating that the preheating phase has been completed.
Page 116: After Starting The Engine
3.3.3.1 RUNNING IN A NEW MACHINE CAUTION Komatsu machines are adjusted and tested completely before shipment. However, operating the machine under severe conditions at the beginning can adversely affect the performance of the machine and shorten its life. It is advisable to run in the machine for the first 100 hours of operation (as indicated by the hour meter).
Page 117: Warming-Up Operations
USE OF THE MACHINE AND RELATED CONTROLS 3.3.3.2 WARMING-UP OPERATIONS IMPORTANT Do not carry out any operation and do not shift the levers suddenly when the hydraulic oil temperature is too low. Always carry out the warming up operations. This will lengthen the life of the machine. Do not accelerate abruptly before completing the warming-up operations.
Page 118 Make sure that the colour of the exhaust gases is normal and that there are no strange noises or vibrations. If any anomaly is observed, contact your Komatsu Dealer. Shift the safety lever (2) to the “locked” position (L), then make sure that the machine does not move even when the levers and pedals are operated.
Page 119: Stopping The Engine
USE OF THE MACHINE AND RELATED CONTROLS 3.3.4 STOPPING THE ENGINE IMPORTANT The sudden stop of the engine while it is running shortens its life. Do not stop the engine suddenly, except in case of emergency. It is likewise recommended not to stop the engine suddenly if it has been running for a long period and is still hot;...
Page 120: How To Move The Machine
USE OF THE MACHINE AND RELATED CONTROLS 3.3.5 HOW TO MOVE THE MACHINE WARNING Before moving the machine, make sure that you perfectly know the control functions and all the relevant safety regulations. The operator must be seated in the driving position with fastened seat belt. Before operating the travel levers, check the direction of the undercarriage.
Page 121 USE OF THE MACHINE AND RELATED CONTROLS • When the sprocket (A) is at the rear of the machine, push the levers (3) slowly forward to move the machine off. • When the sprocket (A) is at the front of the machine, pull the levers (3) slowly backward to move the machine off.
Page 122: Moving The Machine In Reverse
USE OF THE MACHINE AND RELATED CONTROLS 3.3.5.3 MOVING THE MACHINE IN REVERSE Move the safety lever (2) to working position (F), then lift the working tools 40-50 cm off the ground. Lift the blade. Opearate both travel levers (3) as explained below. RKA01610 •...
Page 123: Stopping The Machine
USE OF THE MACHINE AND RELATED CONTROLS • When the machine is travelling at high speed, the travel speed increase warning light (5) comes on. For details on the travel speed, see paragraph ."5.1 TECHNICAL DATA" NOTE When the engine is started, the low speed is automatically selected. When the machine travels at high speed on soft ground or up a slope and the load increases, the low speed is automatically selected, but the travel speed increase warning light remains on.
Page 124: Steering The Machine
USE OF THE MACHINE AND RELATED CONTROLS 3.3.6 STEERING THE MACHINE 3.3.6.1 STEERING (CHANGING DIRECTION) WARNING Before operating the travel control levers, check the position of the sprocket. If the sprocket is at the front, the operation of the travel levers is inverted. Avoid abrupt changes of direction as much as possible.
Page 125 USE OF THE MACHINE AND RELATED CONTROLS STEERING (CHANGING DIRECTION) When steering to the left: If the left travel lever is shifted back to the neutral position, the machine will steer to the left. NOTE To steer to the right, operate the right travel lever in the same way.
Page 126: Swinging The Turret
USE OF THE MACHINE AND RELATED CONTROLS 3.3.7 SWINGING THE TURRET WARNING Before rotation, make sure that the area surrounding machine is free of any kind of obstacles. Before rotation, take the rotation locking lever (1) to the UNLOCKING position. To swing the turret, use the left work equipment control lever (2).
Page 127: Work Equipment Controls And Functions
USE OF THE MACHINE AND RELATED CONTROLS 3.3.8 WORK EQUIPMENT CONTROLS AND FUNCTIONS The work equipment is controlled by means of the right and left work equipment control levers. The left lever controls the arm and the turret swing, while the right lever controls the boom and the bucket. When the levers are released, they automatically return to the neutral position and the work equipment remain in the position where they stopped.
Page 128 USE OF THE MACHINE AND RELATED CONTROLS Boom swing control To swing the boom, use the boom swing control pedal. Blade control Select the use of the blade with the blade/adjustable track gauge selection switch. To operate the blade, shift the lever positioned to the right of the operator seat forward or backward.
Page 129 USE OF THE MACHINE AND RELATED CONTROLS Track gauge adjustment control (version with adjustable track gauge) WARNING Select the narrow track gauge only when the machine must travel in small spaces. For normal applications and digging operations, always select the wide track gauge. Adjusting the track gauge on slopes is dangerous, since this may affect the lateral stability of the machine.
Page 130: Unauthorized Operations
USE OF THE MACHINE AND RELATED CONTROLS 3.3.9 UNAUTHORIZED OPERATIONS WARNING If it is necessary to operate the work equipment control levers while the machine is moving, carry out this operation with the maximum care. PERATIONS FOR WHICH IT IS NOT ALLOWED TO EXPLOIT THE TURRET SWING Do not use the turret swing force to compact soil or break earth mounds or walls.
Page 131 USE OF THE MACHINE AND RELATED CONTROLS OPERATIONS FOR WHICH IT IS NOT ALLOWED TO EXPLOIT THE DROPPING FORCE OF THE BUCKET Do not exploit the dropping force of the bucket to use it as a pickaxe, breaker, or pile driver. This may considerably reduce the life of the machine.
Page 132: Precautions For Use
USE OF THE MACHINE AND RELATED CONTROLS 3.3.10 PRECAUTIONS FOR USE TRAVELLING Travelling on big stones, logs or other obstacles subjects the frame and in particular the tracks to considerable strain, which damages the machine. For this reason, it is always advisable to remove any obstacles or to avoid them, if possible.
Page 133 USE OF THE MACHINE AND RELATED CONTROLS MAXIMUM WATER DEPTH CAUTION When driving the machine out of water, if the inclination of the machine exceeds 15°, the rear of the turret will be submerged, and this may cause the cooling fan to break. Be extremely careful when driving the machine out of water.
Page 134: Precautions To Be Taken When Travelling On Slopes
USE OF THE MACHINE AND RELATED CONTROLS 3.3.11 PRECAUTIONS TO BE TAKEN WHEN TRAVELLING ON SLOPES WARNING When travelling downhill on steep slopes, slow down using the travel levers and the hand accelerator. Do not travel downhill on slopes whose inclination exceeds 15°.
Page 135 USE OF THE MACHINE AND RELATED CONTROLS When travelling uphill on a slope, position the work equipment as shown in the diagram on the right. 20-30 cm 15˚max. RKA17480 BRAKING WHEN TRAVELLING DOWNHILL To brake when travelling downhill, shift the travel levers to the neutral position. This will automatically engage the brakes.
Page 136: Getting The Machine Out Of Mud
USE OF THE MACHINE AND RELATED CONTROLS 3.3.12 GETTING THE MACHINE OUT OF MUD Always proceed carefully to avoid getting stuck in mud. However, if the machine gets stuck in mud, proceed as indicated below. WHEN ONE SIDE ONLY GETS STUCK IMPORTANT When using the boom or arm to raise the machine, always place the bottom of the bucket in contact with the ground.
Page 137: Operations That Can Be Performed With The Hydraulic Excavator
USE OF THE MACHINE AND RELATED CONTROLS 3.3.13 OPERATIONS THAT CAN BE PERFORMED WITH THE HYDRAULIC EXCAVATOR In addition to those indicated below, many other applications are possible, thanks to the use of various attachments. EXCAVATION When the machine is in the position shown in the diagram on the right, the maximum digging force and thrusting force of the single cylinders is obtained when the bucket cylinder and the relevant articulation, the arm cylinder and the arm are at 90°...
Page 138 USE OF THE MACHINE AND RELATED CONTROLS LEVELLING OPERATIONS Use the blade to fill excavations and level the ground surface. For refilling operations, widen the track gauge and the blade. RYA02570 SIDE DITCHING WORK It is possible to use the machine for side ditching work in limited spaces, by combining the turret and the boom swing.
Page 139: Changing The Bucket
USE OF THE MACHINE AND RELATED CONTROLS 3.3.14 CHANGING THE BUCKET WARNING When the coupling pins are removed or installed, chips may come off; always use gloves, goggles and helmet. The change of the equipment must be carried out by two operators, who must decide together the words and signals to be used during work.
Page 140: Parking The Machine
USE OF THE MACHINE AND RELATED CONTROLS 3.3.15 PARKING THE MACHINE WARNING Avoid stopping the machine abruptly. Always calculate a sufficient safety distance when stopping. Park the machine on firm and level ground. Avoid parking 120˚ the machine on slopes. If it is absolutely necessary to park the machine on a slope, put blocks under the tracks and thrust the work equipment into the ground to prevent the machine from moving.
Page 141 USE OF THE MACHINE AND RELATED CONTROLS Lower the bucket keeping it in horizontal position, until its bottom touches the ground. Lower the blade to the ground. RYA17850 Shift the safety lever (3) to the “locked” position (L). RKA22990 WEAM009300...
Page 142: Checking The Machine Every Day After Work
USE OF THE MACHINE AND RELATED CONTROLS 3.3.16 CHECKING THE MACHINE EVERY DAY AFTER WORK 3.3.16.1 BEFORE STOPPING THE ENGINE At the end of work, before stopping the engine, check the engine coolant temperature warning light (1), the engine oil pressure warning light (2) and the fuel level on the gauge (3).
Page 143: Rubber Tracks (Machines Equipped With Rubber Tracks Only)
USE OF THE MACHINE AND RELATED CONTROLS 3.3.18 RUBBER TRACKS (Machines equipped with rubber tracks only) 3.3.18.1 OPTIMAL USE OF THE RUBBER TRACKS Rubber tracks have exceptional characteristics that cannot be found in steel tracks. However, if they are used in the same way as steel tracks, the advantages they offer cannot be fully exploited.
Page 144: Use Of The Rubber Tracks
USE OF THE MACHINE AND RELATED CONTROLS 3.3.18.3 USE OF THE RUBBER TRACKS UNAUTHORIZED USES Keep to the following instructions. Avoid performing rotations or other operations on broken rocks, very hard rocks, steel bars, scraps, or near the edges of steel plates, since this may damage the rubber tracks. In places like river beds, where there is a great quantity of large and small stones, these may get stuck in the tracks, and damage them or cause them to come off.
Page 145 USE OF THE MACHINE AND RELATED CONTROLS Avoid steering when moving on kerbs, rocks or areas with considerable differences in height (more than 20 cm). When the machine moves in these conditions, always position it perpendicular to the obstacles. RYA02770 When travelling up slopes in reverse, avoid steering at the beginning of the slope.
Page 146 USE OF THE MACHINE AND RELATED CONTROLS Detachment of the rubber track from the track frame When the machine moves over an obstacle, a gap forms between the carrier roller and the rubber track. In these conditions, the rubber track may come off. RYA02800 Furthermore, if the machine travels in reverse, a gap forms between the carrier roller, the idler roller, and the rubber...
Page 147 USE OF THE MACHINE AND RELATED CONTROLS If the machine travels in reverse in these conditions, the rubber track will come off. RYA02820 If the machine steers in these conditions, the rubber track will come off. RYA02830 WEAM009300...
Page 148: Transporting The Machine
TRANSPORTING THE MACHINE 3.4 TRANSPORTING THE MACHINE When transporting the machine, observe all the laws and regulations in force, paying special attention to safety. 3.4.1 TRANSPORT PROCEDURE As a general rule, the machine must be transported on a trailer. Choose the trailer according to the weight and size of the machine, as indicated in paragraph "5.1 TECHNICAL DATA"It is important to remember that the weight and transport size indicated in the technical data may vary according to the type of track, to the type of boom or to the other attachments installed on the machine.
Page 149 TRANSPORTING THE MACHINE During the loading and unloading operations, always use ramps or a platform and proceed as indicated below. LOADING THE MACHINE NOTE Load and unload the machine on/from the trailer on firm and level ground only, and widen the track gauge. Keep a safety distance from the edge of the road.
Page 150 TRANSPORTING THE MACHINE Position the work equipment at the front and the blade at the rear, with the turret and the undercarriage parallel to each other. Move the machine towards the ramps and lower the work equipment as much as possible, taking care to prevent them from touching the trailer.
Page 151 TRANSPORTING THE MACHINE SECURING THE MACHINE ON THE MEANS OF TRANSPORT After positioning the machine on the trailer, it is necessary to secure it by proceeding as indicated below. IMPORTANT To avoid damaging the machine during transport, place wooden blocks under the end of the bucket cylinder, in such a way as to prevent it from touching the ground.
Page 152 TRANSPORTING THE MACHINE UNLOADING THE MACHINE NOTE Load and unload the machine on/from the trailer on firm and level ground only, and widen the track gauge. Keep a safety distance from the edge of the road. Engage the trailer brakes and place safety blocks under the trailer wheels to prevent it from moving.
Page 153 TRANSPORTING THE MACHINE Run the engine at low speed. (A): Idling Lift the blade. RKA16490 Lift the work equipment, make sure that the travel direction is in line with the ramps and start travelling slowly. Lower the work equipment as much as possible, without causing interferences.
Page 154: Lifting The Machine
The lifting method varies according to the equipment and attachments installed. In these cases, contact your Komatsu Dealer, who can supply you with more precise information. The lifting operation must be carried out on a level surface, by proceeding as indicated below.
Page 155 TRANSPORTING THE MACHINE Shift the safety lever to the “locked” position (L). Stop the engine, make sure that the space around the operator seat is clear, then get off the machine. RKA23010 Install shackles in the lifting holes on both ends of the blade (2 points), then pass the metal cables through them.
Page 156 TRANSPORTING THE MACHINE Install one shackle in the lifting hole provided in the boom, then pass the metal cable through it. IMPORTANT Always use the three coupling points provided for lifting the machine. Do not lift the machine with swung boom or turret.
Page 157: Using The Machine In The Cold Season
The coolant containing antifreeze is flammable; do not smoke and do not use naked flames during the checks and when preparing the mixture. 1 - Use only Komatsu original coolant antifreeze (AF-NAC) to dilute according to the minimum atmospheric temperature indicated in the table in section "4.4.1 COOLANT".
Page 158: Battery
USING THE MACHINE IN THE COLD SEASON 3.5.1.3 BATTERY WARNING The battery produces flammable gas, therefore keep flames and sparks away from it. The battery electrolyte is dangerous. In case of contact with the eyes or the skin, wash with plenty of running water and consult a doctor without delay.
Page 159: Ventilation And Heating
USING THE MACHINE IN THE COLD SEASON 3.5.2 VENTILATION AND HEATING The ventilation and heating of the cab serve to reduce the operator’s stress both in summer and in winter; these functions also serve to eliminate condensate from the front windshield, thus ensuring visibility during both work and travel.
Page 160: Precautions To Be Taken Every Day At The End Of Work
USING THE MACHINE IN THE COLD SEASON 3.5.3 PRECAUTIONS TO BE TAKEN EVERY DAY AT THE END OF WORK WARNING Making the tracks turn idly is dangerous, therefore it is advisable to keep away from the tracks when carrying out this operation. To prevent the mud and water present on the undercarriage from freezing, thus making it impossible to move the machine the following morning, always take the following precautions.
Page 161: Long Periods Of Inactivity
IMPORTANT If the machine has been stored without carrying out the monthly rust-prevention treatment, have maintenance performed by your Komatsu Dealer. Before using the machine after a long period of inactivity, carry out the operations listed below. Recharge the battery and install it on the machine.
Page 162: Recommendations For Machines Equipped With Komtrax System During Long Periods Of Inactivity
LONG PERIODS OF INACTIVITY 3.6.4 RECOMMENDATIONS FOR MACHINES EQUIPPED WITH KOMTRAX SYSTEM DURING LONG PERIODS OF INACTIVITY Even if the specific key is set to OFF, the KOMTRAX system can absorb a minimum quantity of energy. In case the machine is not used for a long period (more than 1 month), strictly observe the following instructions. Disconnect the terminal from the battery negative lead and cover the battery, or turn the battery main switch anticlockwise Measure the coolant weight density and check the battery charge percentage, using the following table:...
Page 163: Troubleshooting
TROUBLESHOOTING 3.7 TROUBLESHOOTING 3.7.1 IF FUEL RUNS OUT COMPLETELY Before starting the engine after running out of fuel, refuel and bleed the fuel system. For details on the bleeding procedure, see "4.9.5.c CHANGING THE FUEL FILTER CARTRIDGE" - " BLEEDING THE FUEL CIRCUIT".
Page 164: Precautions To Be Taken When Working In Particular Conditions
TROUBLESHOOTING 3.7.4 PRECAUTIONS TO BE TAKEN WHEN WORKING IN PARTICULAR CONDITIONS When carrying out digging operations in water, if water gets on the pins of the work equipment, always add grease to the bucket articulations (1), (2), (3), (4) and (5) before work. When carrying out heavy duty digging and deep digging operations, always add grease to the bucket articulations (1), (2), (3), (4) and (5) (total: 5 points) before work.
Page 165: Removing And Installing The Battery
TROUBLESHOOTING 3.7.5.1 REMOVING AND INSTALLING THE BATTERY Before removing the battery, disconnect the earth cable (-). If a tool touches the positive terminal and the frame of the machine at the same time, sparks may be generated. When installing the battery, connect the earth cable (-) last. Install the battery correctly.
Page 166: Starting With Booster Cables
TROUBLESHOOTING 3.7.5.3 STARTING WITH BOOSTER CABLES When starting the engine with booster cables, proceed as indicated below. CONNECTING AND DISCONNECTING THE BOOSTER CABLES WARNING When connecting the cables, avoid any contact between the positive cable (+) and the negative cable (–). When starting the engine with booster cables, always wear safety goggles.
Page 167 TROUBLESHOOTING STARTING THE ENGINE CAUTION Make sure that the safety levers of both machines are in the “locked” position. Also make sure that all the control levers are in NEUTRAL. Make sure that the clamps hold the battery terminals firmly. Start the engine of the machine used as starting aid and run it at high rpm.
Page 168: Other Troubles
TROUBLESHOOTING 3.7.6 OTHER TROUBLES Always contact your Komatsu Dealer when you have to carry out this operation. If the anomaly or its cause is not included in the table below, contact your Komatsu Dealer for the necessary repair. 3.7.6.1 ELECTRICAL CIRCUIT...
Page 169: Frame
TROUBLESHOOTING 3.7.6.2 FRAME TROUBLE CAUSE SOLUTION • No hydraulic oil. • Restore level. See "CHECKS TO BE Travel speed, swing, boom, arm, CARRIED BEFORE bucket slow. STARTING THE ENGINE". • Foreign body in the hydraulic tank • Clean. See "Every 2000 hours OF Pump does not work correctly.
Page 170 TROUBLESHOOTING TROUBLE CAUSE SOLUTION • No fuel. • Restore level. See"CHECKS TO BE CARRIED OUT BEFORE STARTING THE ENGINE". • Air in fuel system. • Repair point where air is sucked in. See "EVERY 500 HOURS OF OPERATION". • Water in fuel system. •...
Page 171: Maintenance
MAINTENANCE...
Page 172: Guide To Maintenance
Carry out these operations on firm and level ground. Use Komatsu genuine oils and greases; choose oils suitable for the ambient temperature. Use clean oils and greases. Keep the oil and grease containers clean and prevent any foreign matter from get- ting into them.
Page 173 GUIDE TO MAINTENANCE Keep naked flames away from these fluids and avoid smoking. When O rings and gaskets are removed, clean the sealing surfaces thoroughly and replace the O rings and gaskets with new ones. Fit the O rings and gaskets correctly when reassembling. Avoid keeping loose objects or tools in your pockets: they may fall out and drop into the machine, especially when you open covers and work on the machine while bending over it.
Page 174: Maintenance Notes
Use only Komatsu genuine spare parts. Do not mix different types of oil. Unless specified otherwise, the oils and the coolant used by Komatsu to fill the tanks before the delivery of the machine are the following: ITEM / TANK / SYSTEM SPECIFICATIONS •...
Page 175: Fuel
Do not use corrosion inhibitors containing soluble oil, since they damage the rubber couplings. In case of doubt regarding the applicable standards for the use of coolant, contact your Komatsu Dealer, who will supply you with exhaustive and precise information.
Page 176: Kowa
Many years of experience and the availability of countless data and information allow Komatsu to accurately deter- mine the conditions of the machine. This also allows us to locate troubles and suggest the most suitable and fast repair solutions.
Page 177: Filters
When changing the oil filters, check if metal particles are present. If you find large quantities of metal particles, contact your Komatsu Dealer. Do not open the spare filter packages before using them. Always use Komatsu original spare parts. WEAM009300...
Page 178: Notes On The Maintenance Of The Electrical System
3 - Check of the battery charge level. Do not remove or eliminate any electric component installed on the machine and do not install any electric com- ponent with characteristics different from those specified and approved by Komatsu. Keep the electric system dry.
Page 179: Parts Subject To Wear
Due to our constant efforts aimed at improving product quality, the spare parts codes may be changed, therefore when ordering spare parts it is advisable to indicate also the machine serial number to the Komatsu Dealer, in or- der to receive the most updated version of the component required.
Page 180: Fuel, Coolant And Lubricants
ASTM D975 N. 2 Engine PERMANENT cooling — COOLANT system Lithium EP+MoS2 (NLGI 2) Greasing GREASE e Original Komatsu oil, especially developed and approved to be used in hydraulic systems. a ASTM D975 N. 1 / EN 590 Class 2. WEAM009300...
Page 181: Coolant
-10 temperature Coolant quantity litres 1,25 1,75 1,95 2,25 2,45 litres 2,95 2,45 2,25 1,95 1,75 Water quantity Volume percentage NOTE The percentage of original Komatsu coolant (AF-NAC) should never be below 30% in order to avoid corrosion. WEAM009300...
Page 182: Approved 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 SYNTHETIC BIODEGRADABLE OIL TYPE “HEES” KOMATSU BO 46 G4 (KES 07.872) AGIP —...
Page 183: Tightening Torques
If not specified otherwise, tighten the screws and nuts applying the torques specified in the table. If it is necessary to replace a screw or a nut, always use Komatsu original spare parts having the same size of the part to be re- placed.
Page 184: Standard Tightening Torques For Hoses With Orfs
If not specified otherwise, tighten the nuts of the hoses applying the torque specified in the table. If it is necessary to replace a hose, always use Komatsu original spare parts having the same size of the part to be replaced.
Page 185: Lubrication
For details on how to lubricate specific parts, see "4.8 MAINTENANCE PLAN". The type of lubricant to be used is indicated in the lubricant table (see "4.4 FUEL, COOLANT AND LUBRI- CANTS"). Grease PC14R-3 PC16R-3 Filter 10 h 500 h...
Page 186: Periodical Change Of Safety-Related Components
PERIODICAL CHANGE OF SAFETY-RELATED COMPONENTS 4.7 PERIODICAL CHANGE OF SAFETY-RELATED COMPONENTS To ensure safety at any moment while driving and using the machine, the operator must carry out all the routine 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 187: Safety-Related Parts
PERIODICAL CHANGE OF SAFETY-RELATED COMPONENTS 4.7.1 SAFETY-RELATED PARTS Safety-related components that periodically need changing Q.ty Change interval Fuel pipe (fuel tank - water separator) Fuel pipe (water separator – fuel pump) Fuel pipe (fuel pump - fuel filter) Fuel pipe (fuel filter - injection pump) Fuel pipe (fuel filter –...
Page 188: Maintenance Plan
MAINTENANCE PLAN 4.8 MAINTENANCE PLAN If the machine is equipped with hydraulic breaker, the maintenance schedule for some components will be different. For further details, see "4.8.2 MAINTENANCE INTERVALS IN CASE OF USE OF THE HYDRAULIC BREAKER". 4.8.1 MAINTENANCE PLAN WHEN REQUIRED CHECKING, CLEANING OR CHANGING THE AIR FILTER CARTRIDGE..............
Page 189: Maintenance Intervals In Case Of Use Of The Hydraulic Breaker
MAINTENANCE PLAN 4.8.2 MAINTENANCE INTERVALS IN CASE OF USE OF THE HYDRAULIC BREAKER In machines equipped with breaker hydraulic oil deteriorates more rapidly than in machines equipped with stand- ard equipment. When using the breaker, always keep to the following maintenance plan. 4.8.2.a CHANGING THE HYDRAULIC OIL FILTER In new machines, change the filter after the first 100÷150 hours of...
Page 190: Maintenance Procedures
MAINTENANCE PROCEDURES 4.9 MAINTENANCE PROCEDURES 4.9.1 WHEN REQUIRED 4.9.1.a CHECKING, CLEANING OR CHANGING THE AIR FILTER CARTRIDGE WARNING Remove the air filter only after stopping the engine and do not start the engine if the air filter is open. When compressed air is used to clean the filter, dust may get into the eyes. Wear safety goggles and a dust mask during the cleaning operations.
Page 191 MAINTENANCE PROCEDURES Slightly strike the filtering element (4) on the palm of your hand, in such a way as to remove the dust, and blow compressed air on the inner surface, keeping the air jet at a distance of approximately 15 cm and the pressure below 4-5 bars.
Page 192: Checking The Battery Charge Level
MAINTENANCE PROCEDURES 4.9.1.b CHECKING THE BATTERY CHARGE LEVEL WARNING Check the charge level only with the engine at rest. To prevent gas explosions, do not use naked flames, do not smoke and avoid producing sparks due to short circuits. The battery electrolyte is dangerous; in case of contact with the eyes or skin, rinse with plenty of water and consult a doctor without delay.
Page 193: Cleaning The Water Separator Filter
MAINTENANCE PROCEDURES 4.9.1.c CLEANING THE WATER SEPARATOR FILTER WARNING Change the filter after work, when the engine has cooled down to 40÷45°C. During these operations some fuel may be spilled; clean the dirty areas immediately, in order to prevent any risk of slipping or fire. Open the radiator cover.
Page 194: Draining The Fuel Tank
MAINTENANCE PROCEDURES 4.9.1.d DRAINING THE FUEL TANK WARNING When draining the fuel tank, avoid spilling fuel, since this may cause fires. If some fuel is accidentally spilled, clean the dirty area immediately, in order to prevent it from getting slippery and to avoid fires. Turn the tower so that the discharge valve (1) under the tank is placed between the tracks.
Page 195 «S» of 0 mm and the track is not suffi- ciently stretched, this means that the pins and bushings are excessively worn. Therefore, it is necessary to exchange or replace the pins and bushings. For any replacement or repair, contact your Komatsu Dealer. WEAM009300...
Page 196: Checking The Rubber Tracks
It is extremely dangerous to let the grease out following any procedure different from those illustrated below. If the track tension cannot be reduced with this operation, contact your Komatsu Dealer, who will pro- vide for the necessary repairs. Gradually loosen the grease valve (1) to let the grease out;...
Page 197 IMPORTANT If the length of the broken area is less then 30 mm or its depth is less than 10 mm, it is not necessary to repair the track. For any repair or replacement, contact your Komatsu Deal- RAY07530 WEAM009300...
Page 198: Checking And Adjusting The Rubber Track Tension
Do not loose any component apart from the valve (1). If the track tension does not decrease after this op- eration, contact your Komatsu Dealer. WARNING If the resistance met when injecting the grease is excessive, move the machine forward and backward covering a short distance.
Page 199 It is extremely dangerous to let the grease out following any procedure different from those illustrated below. If the track tension cannot be reduced with this operation, contact your Komatsu Dealer, who will pro- vide for the necessary repairs. Gradually loosen the grease valve (1) to let the grease out;...
Page 200: Changing The Rubber Tracks
Do not loose any component apart from the valve (1). If the track tension does not decrease after this operation, con- tact your Komatsu Dealer. It is extremely dangerous to let the grease out following any procedure different from the one indicated below.
Page 201 MAINTENANCE PROCEDURES Stop the machine on a firm and level surface and lower the equip- ment to the ground. Raise the undercarriage using boom and arm. Carry out this operation shifting the control levers very slowly. Gradually loosen the grease valve (1) to let the grease out; do not give the valve more than one turn.
Page 202 MAINTENANCE PROCEDURES INSTALLING THE RUBBER TRACKS Raise the undercarriage using boom and arm and make sure that the grease contained in the cylinder has been eliminat- Carry out this operation shifting the control levers very slowly. Install the rubber tracks on the sprocket by fitting the driving blocks.
Page 203: Windscreen Detergent Level Check And Topping Up (Machines With Cab)
MAINTENANCE PROCEDURES 4.9.1.i WINDSCREEN DETERGENT LEVEL CHECK AND TOPPING UP (machines with cab) The tank (1) is located under the driving cab and can be accessed after opening the sliding door. The tank holds liquid detergent used for cleaning the front windscreen; make sure that the reser- voir is always full.
Page 204: Lubrication Of Cab Door Hinges (Machines With Cab)
MAINTENANCE PROCEDURES 4.9.1.j LUBRICATION OF CAB DOOR HINGES (machines with cab) Lubricate when the cab door squeaks when it is opened or closed, or when there are oxidation traces around the shoulder washers or their pivots. Lubrication consists in filling the grease nipples placed on the hinge axis with grease.
Page 205: Windscreen Wiper Check
MAINTENANCE PROCEDURES 4.9.1.l WINDSCREEN WIPER CHECK Check only after the windscreen wiper mechanism has been activated. Checking consists in detecting the faulty cleaning of the wiper carried out with the washer in function. If after cleaning, there are scratches, it means that the scrapping blade is deteriorated and it is necessary to replace the wiper.
Page 206: Checks To Be Carried Out Before Starting The Engine
Dirt, oil and fuel in the engine compartment near hot parts may damage the machine and even cause fires. Check frequently and repair any leakage immediately; if they occur repeatedly, contact your Komatsu Dealer. For details on the following items, see "3.3.1.2 CHECKS TO BE CARRIED OUT BEFORE STARTING THE EN- GINE".
Page 207: Maintenance Every 500 Hours Of Operation
MAINTENANCE PROCEDURES 4.9.5 MAINTENANCE EVERY 500 HOURS OF OPERATION 4.9.5.a LUBRICATION IMPORTANT Clean the grease nipples before applying the greasing pump. After lubrication, remove all the contaminated grease that may have spread out of the nipples. If the machine is used in difficult conditions, carry out this operation more frequently than usual. As a general rule, it is important to consider that each cylinder is provided with two grease nipples posi- tioned on the couplings and that each pin serving as fulcrum point for a movement is provided with at least one grease nipple.
Page 208 MAINTENANCE PROCEDURES (1) Bucket-link connection pins (1 point) (2) Arm–bucket connection pin (1 point) (3) Arm–link connection pin (1 point) (4) Bucket cylinder rod end (1 point) (5) Link connection pin (1 point) (6) Boom swing bracket pin (1 point) (7) Boom base pin (1 point) (8) Boom cylinder base pin (1 point) (9) Boom cylinder rod end (1 point)
Page 209: Changing The Engine Oil And The Engine Oil Filter Cartridge
MAINTENANCE PROCEDURES 4.9.5.b CHANGING THE ENGINE OIL AND THE ENGINE OIL FILTER CARTRIDGE WARNING Change the oil with the machine parked on a level surface and the work equipment resting on the ground. 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÷45°C before draining the oil.
Page 210: Changing The Fuel Filter Cartridge
MAINTENANCE PROCEDURES 4.9.5.c CHANGING THE FUEL FILTER CARTRIDGE WARNING Change the filtering element after work, when the engine has cooled down to 40÷45°C. During these operations some fuel may be spilled; clean the dirty areas immediately, in order to prevent any risk of slipping or fire.
Page 211: Checking The Oil Level In The Final Reduction Gears
MAINTENANCE PROCEDURES 4.9.5.d CHECKING THE OIL LEVEL IN THE FINAL REDUCTION GEARS WARNING Soon after the machine has been stopped, the engine oil is very hot and may cause burns; let the oil cool down to 40÷45° C before carrying out any check. Loosen the cap slowly to release any residual pressure.
Page 212: Checking And Adjusting The Fan Belt Tension
To carry out this maintenance operation it is necessary to tilt the cab floor. Carefully follow the instruc- tions given in paragraph "3.2.9 TILTING THE CAB FLOOR (machines with canopy)" or have this opera- tion carried out by your Komatsu Dealer. CHECK The fan belt can be reached after tilting the cab floor (see "3.2.9...
Page 213: Draining The Hydraulic Oil Tank (Only For Machines In Which Synthetic Biodegradable Oil Type Hees Is Used)
"3.2.9 TILTING THE CAB FLOOR (machines with canopy)" or have this opera- tion carried out by your Komatsu Dealer. Retract the arm and bucket cylinders completely, rest the bucket teeth on the ground and, after stopping the engine, eliminate the residual pressures from the equipment (by shifting the controls more than once) and from the tank (by slowly loosening the filler cap).
Page 214: Maintenance Every 1000 Hours Of Operation
"3.2.9 TILTING THE CAB FLOOR (machines with canopy)" or have this opera- tion carried out by your Komatsu Dealer. Soon after the machine has been stopped, the hydraulic oil is very hot and may cause burns; let it cool down to 40÷45°...
Page 215 MAINTENANCE PROCEDURES Extend the boom, arm and bucket cylinders completely, as shown in the figure, and remove the filler cap (F). Put back the cap and pressurize the tank by lowering the equipment to the ground. IMPORTANT In machines equipped with breaker hydraulic oil deterio- rates more rapidly than in machines used for simple dig- ging operations.
Page 216: Changing The Oil In The Final Reduction Gears
Always use oil of the prescribed type (see "4.4 FUEL, COOLANT AND LUBRICANTS"). 4.9.6.c CHECKING AND ADJUSTING THE ENGINE VALVE CLEARANCE Since these checks and adjustments require the use of special tools, have them carried out by qualified personnel supplied by your Komatsu Dealer. WEAM009300...
Page 217: Maintenance Every 2000 Hours Of Operation
"3.2.9 TILTING THE CAB FLOOR (machines with canopy)" or have this opera- tion carried out by your Komatsu Dealer. Retract the arm and bucket cylinders completely, rest the bucket teeth on the ground and, after stopping the engine, eliminate the residual pressures from the equipment (by shifting the controls more than once) and from the tank (by slowly loosening the filler cap).
Page 218 MAINTENANCE PROCEDURES Loosen the screws (1), remove the plate (2) and slowly loos- en the filler cap (F) to release the residual pressure from the tank. Remove the drain plug (P) and let the oil flow out, gathering it into a container with suitable capacity. Loosen the clamps (3), remove the suction pipe (4) and let the oil that is still in the tank flow out.
Page 219: Changing The Coolant
MAINTENANCE PROCEDURES IMPORTANT In machines equipped with breaker hydraulic oil deterio- rates more rapidly than in machines used for simple dig- ging operations. Change the oil following the instructions given in the table. Replacement interval for hydraulic oil 2000 1500 1000 Breaker operating ratio (%)
Page 220: Checking The Alternator And The Starter
CHECKING THE ALTERNATOR AND THE STARTER The brush may be worn or the bearing may be without grease. Contact your Komatsu Dealer for the necessary in- spection or repair. If the engine is started frequently, carry out this check every 1000 hours.
Page 221: Technical Specifications
TECHNICAL SPECIFICATIONS...
Page 222: Technical Data
Unit of measurement Tare with roof (kg) 1440 (Operator included: 80 kg) Tare with cab (kg) 1590 (Operator included: 80 kg) 0,044 Bucket capacity (m3) Komatsu 3D67E-2A Engine diesel engine 11,2(15)/2600 Engine power KW (HP)/rpm 3380 Total length Total height 2320 1000...
Page 223 TECHNICAL DATA PC14R-2 Operating characteristics Unit of measurement Max. digging outreach 3635 2000 Max. digging depth 3285 Max. digging height 1450 Max. vertical wall digging depth 2295 Max. dumping height 1485 Work equipment min. swing radius Work equipment min. swing radius (with boom 1085 swing) Max.
Page 224: Lifting Capacities
LIFTING CAPACITIES 5.2 LIFTING CAPACITIES 5.2.1 LIFTING CAPACITIES DANGER According to the harmonized standard EN474-5 (§ 4.1.7.5), the machine cannot lift weights exceeding 1000 kg, unless it is provided with appropriate equipment. Carry out lifting operations only with the machine positioned on firm and flat ground. NOTE The load does not exceed 87% of the hydraulic lifting capacity or 78% of the tipping limit.
Page 225 LIFTING CAPACITIES ROPS CANOPY + STANDARD ARM + STANDARD COUNTERWEIGHT + RAISED BLADE Unit: kg 1.5 m 2.5 m 3.5 m Max. 3.0 m 2.5 m *220 *220 *229 *229 2.0 m *225 *225 *218 *220 1.5 m *276 *276 *235 1.0 m 0.5 m...
Page 226 LIFTING CAPACITIES ROPS CANOPY + LONG ARM + STANDARD COUNTERWEIGHT + RAISED BLADE Unit: kg 1.5 m 2.5 m 3.5 m Max. 3.0 m 2.5 m *182 *182 *187 *187 2.0 m *178 *178 *184 1.5 m *220 *220 *199 1.0 m *302 *235...
Page 227 LIFTING CAPACITIES ROPS CAB + STANDARD ARM + STANDARD COUNTERWEIGHT + LOWERED BLADE Unit: kg 1.5 m 2.5 m 3.5 m Max. 3.0 m 2.5 m *220 *220 *229 *229 2.0 m *225 *225 *218 *220 1.5 m *276 *276 *235 *219 1.0 m...
Page 228 LIFTING CAPACITIES ROPS CAB + LONG ARM + STANDARD COUNTERWEIGHT + LOWERED BLADE Unit: kg 1.5 m 2.5 m 3.5 m Max. 3.0 m 2.5 m *182 *182 *187 *187 2.0 m *178 *178 *184 1.5 m *220 *220 *199 *187 *185 1.0 m...
Page 229: Authorized Optional Equipment
AUTHORISED OPTIONAL EQUIPMENT...
Page 230: Authorised Tools
6.1.1 PRECAUTIONS REGARDING SAFETY If attachments or optional equipment other than those authorized by Komatsu are installed, this will not only affect the life of the machine, but will also cause safety problems. Before installing attachments not listed in this manual, contact your Komatsu Dealer.
Page 231: Precautions Regarding The Installation Of Equipment
Always follow the correct procedure when installing the boom and the arm. Any incorrect procedure may lead to serious risks; contact your Komatsu Dealer before installation. WEAM009300...
Page 232: Authorised Tools Characteristics
6.1.3 AUTHORISED TOOLS CHARACTERISTICS CAUTION Only use tools authorised by Komatsu. Pay special attention to the safety standards and, before starting operations, carry out a test (in a safe place) to check the operative range of the tool and its centre of gravity.
Page 233: Machine Configuration For The Installation Of Attachments
MACHINE CONFIGURATION FOR THE INSTALLATION OF ATTACHMENTS 6.2 MACHINE CONFIGURATION FOR THE INSTALLATION OF ATTACHMENTS 6.2.1 POSITION OF THE DEVICES RKA23120 Quick couplers Optional equipment control pedal Selection valve Pedal locking device (for the optional equipment control pedal) WEAM009300...
Page 234 MACHINE CONFIGURATION FOR THE INSTALLATION OF ATTACHMENTS Quick couplers The quick couplers (1) are used to connect the pipes to the ends of the equipment. When removing the equipment, protect the quick couplers with the plugs (A). When installing the equipment, remove the plugs (A) and carefully clean the quick couplers before connecting them to the pipes.
Page 235: Hydraulic Circuit
MACHINE CONFIGURATION FOR THE INSTALLATION OF ATTACHMENTS 6.2.2 HYDRAULIC CIRCUIT 6.2.2.1 INSTALLING AND CONNECTING THE EQUIPMENT WARNING The machine must be parked on a level surface, with the equipment resting on the ground. When the connecting pins are removed or installed, chips may come off; always wear gloves, safety goggles and helmet.
Page 236: Bleeding
MACHINE CONFIGURATION FOR THE INSTALLATION OF ATTACHMENTS 6.2.2.3 BLEEDING After connecting the pipes, start the engine and let it idle for approximately 10 minutes (see "3.3.2 STARTING THE ENGINE"). Extend all cylinders 4-5 times, stopping them at approx. 100 mm from the end of stroke. IMPORTANT If the engine runs at maximum rpm or if the cylinders are brought to the end of stroke soon after starting, the air sucked in by the cylinders may damage the piston gaskets.
Page 237: Operating The Equipment
The breaker is operated by pressing the lower part of the equipment control pedal (B). NOTE If it is necessary to adjust the oil flow, have this operation carried out by your Komatsu Dealer. RKA16510 Precautions for use Before using the breaker, make sure that the spool of the selection valve (1) is completely rotated clockwise and resting against its retainer, position (b).
Page 238: Long Periods Of Inactivity
Lower part (B) pressed: the oil flows to the left side of the arm (operator seat side). NOTE If it is necessary to adjust the oil flow, have this operation carried out by your Komatsu Dealer. RKA16500 Precautions for use Before using a crusher or other generic equipment, make sure that the spool of the selection valve (1) is completely rotated counterclockwise and resting against its retainer, position (a).
Page 239: Precautions With The Authorised Tools
Choose the type of equipment that is most suitable to the hydraulic excavator on which it must be installed. Use only optional or special equipment recommended and approved by Komatsu and in compliance with the requirements indicated (see "6.1.3 AUTHORISED TOOLS CHARACTERISTICS").
Page 240 PRECAUTIONS WITH THE AUTHORISED TOOLS It is absolutely necessary to keep the pressure of the excavator on the breaker constant as the bit penetrates the ground. Always accompany the breaker as it penetrates and use the excavator arms to obtain such a pressure as to keep the undercarriage lifted approx.
Page 241 PRECAUTIONS WITH THE AUTHORISED TOOLS ALWAYS AVOID THE FOLLOWING INCORRECT USES: To ensure long machine life and safe work, the following operations should be avoided. IMPORTANT During work, do not use the hydraulic breaker with the bucket cylinder at the end of stroke, but always leave a minimum space of 5 cm.
Page 242 PRECAUTIONS WITH THE AUTHORISED TOOLS Levering with the tool after driving it into the material to be broken. RYA03930 Hitting the ground with the breaker bit. RYA03940 Lifting the machine by levering on the breaker bit with the bucket cylinder completely extended. RYA03950 WEAM009300...
Page 243 PRECAUTIONS WITH THE AUTHORISED TOOLS GREASING Supply grease in the correct position. RYA05800 IMPORTANT If grease is injected with the breaker in the wrong position, the breaker circuit will receive more grease than necessary. As a result, soil and sand may get into the hydraulic circuit and damage the hydraulic components while the breaker is being used.
Page 244 THIS PAGE WAS INTENTIONALLY LEFT EMPTY...

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