gd555-3c_keam038100t.pdf

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    FOREWORDFOREWORD

    FOREWORDThis manual provides rules and guidelines which will help you use this machine safely and effectively. The

    precautions in this manual must be followed at all times when performing operation and maintenance. Most

    accidents are caused by the failure to follow fundamental safety rules for the operation and maintenance of

    machines. Accidents can be prevented by knowing beforehand conditions that may cause a hazard whenperforming operation and maintenance.

     WARNINGOperators and maintenance personnel must always do as follows before beginning operation or maintenance.

    Always be sure to read and understand this manual thoroughly before performing operation and maintenance.

    Read the safety messages given in this manual and the safety labels affixed to the machine thoroughly and be sure that you

    understand them fully.

    Keep this manual at the storage location for the Operation and Maintenance Manual given below, and have all personnel read it

    periodically.

    If this manual has been lost or has become dirty and cannot be read, request a replacement manual immediately from Komatsu

    or your Komatsu distributor.

    If you sell the machine, be sure to give this manual to the new owners together with the machine.

    Komatsu delivers machines that comply with all applicable regulations and standards of the country to which it has been shipped.

    If this machine has been purchased in another country or purchased from someone in another country, it may lack certain safety

    devices and specifications that are necessary for use in your country. If there is any question about whether your productcomplies with the applicable standards and regulations of your country, consult Komatsu or your Komatsu distributor before

    operating the machine.

      Storage location for the Operation and Maintenance Manual:

      Pocket at rear of operator's seat

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    FOREWORD   FOREWORD

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    FOREWORD   SAFETY INFORMATION

    SAFETY INFORMATIONTo enable you to use this machine safely, safety precautions and labels are given in this manual and affixed to the

    machine to give explanations of situations involving potential hazards and of the methods of avoiding such

    situations.

    Signal words

    The following signal words are used to inform you that there is a potential hazardous situation that may lead to

    personal injury or damage.

    In this manual and on machine labels, the following signal words are used to express the potential level of hazard.

    Indicates an imminently hazardous situation which, if not avoided, will result in death or

    serious injury.

    Indicates a potentially hazardous situation which, if not avoided, could result in death or

    serious injury.

    Indicates a potentially hazardous situation which, if not avoided, may result in minor or

    moderate injury. This word is used also to alert against unsafe practices that may cause

    property damage.

    Example of safety message using signal word

     WARNINGTo avoid hitting unlocked operation levers, lower equipment to ground and

    move SAFETY LOCK LEVER to LOCK position before starting up fromoperator's seat.

    Sudden and unwanted machine movement can cause serious injury or

    death.

    Other signal words

    In addition to the above, the following signal words are used to indicate precautions that should be followed to

    protect the machine or to give information that is useful to know.

    This word is used for precautions that must be taken to avoid actions which could shortenthe life of the machine.

    This word is used for information that is useful to know.

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    FOREWORDSAFETY INFORMATION

    Safety labels

    Safety labels areaffixed to the machine to inform the operator or maintenanceworker on the spot when carrying out

    operation or maintenance of the machine that may involve hazard.

    This machine uses "Safety labels using words" and "Safety labels using pictograms" to indicate safety procedures.

    Example of safety label using words

    Safety labels using pictogram

    Safety pictograms use a picture to express a level of hazardous

    condition equivalent to the signal word. These safety pictograms

    use pictures in order to let the operator or maintenance worker

    understand the level and type of hazardous condition at all times.

    Safety pictogramsshow the type of hazardous condition at the top

    or left side, and the method of avoiding the hazardous condition at

    the bottomor right side.In addition,the type ofhazardouscondition

    is displayed inside a triangle and the method of avoiding the

    hazardous condition is shown inside a circle.

    Komatsu cannot predict every circumstance that might involve a potential hazard in operation and maintenance.Therefore, the safety messages in this manual and on the machine may not include all possible safety precautions.

    If anyproceduresor actions not specificallyrecommended or allowed in this manualareused, it is your responsibility

    to take the necessary steps to ensure safety.

    In no event should you engage in prohibited uses or actions described in this manual.

    The explanations, values, and illustrations in this manual were prepared based on the latest information available

    at that time. Continuing improvements in the design of this machine can lead to changes in detail which may not

    be reflected in this manual. Consult Komatsu or your Komatsu distributor for the latest available information of your

    machine or for questions regarding information in this manual.

    The numbers in circles in the illustrations correspond to the numbers in ( ) in the text. (For example:1 -> (1))

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    FOREWORD   INTENDED USE

    INTENDED USEThis Komatsu machine is designed to be used mainly for the following work:

    Smoothing

    Repair and maintenance of gravel roads

    Snow-clearing operationsDitch digging

    Cutting slope faces

    Excavating operations

    Mixed operations

    Spreading operations

    Front wheel offset operations

    See the section "WORK WHICH CAN BE CARRIED OUT USING A MOTOR GRADER (PAGE 3-68)" for further

    details.

    DIRECTIONS OF MACHINE

    In this manual, the directions of the machine (front, rear, left, right) are determined according to the view from the

    operator's seat in the direction of travel (front) of the machine.

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    FOREWORDLOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR

    LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. ANDDISTRIBUTORWhen requesting service or ordering replacement parts, please inform your Komatsu distributor of the following

    items.

    MACHINE SERIAL NO. PLATE POSITIONThis is at the front of the rear frame on the left side of the machine.

    ENGINE SERIAL NO. PLATE POSITIONThis is at the top of the right side of the engine cylinder head as seen from the fan.

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    FOREWORD   LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR

    SERVICE METER POSITIONThe meter is installed to the left side of the steering wheel column.

    TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR

    Machine serial No.

    Engine serial No.

    Distributor name

     Address

    Service Personnel

    Phone/Fax

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    FOREWORDCONTENTS

    CONTENTSFOREWORD 1- 1

      FOREWORD 1- 2

      SAFETY INFORMATION 1- 5

      INTENDED USE 1- 7  DIRECTIONS OF MACHINE 1- 7

      LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR 1- 8

      MACHINE SERIAL NO. PLATE POSITION 1- 8

      ENGINE SERIAL NO. PLATE POSITION 1- 8

      SERVICE METER POSITION 1- 9

      TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR 1- 9

    SAFETY 2- 1

      SAFETY INFORMATION 2- 2

      SAFETY LABELS 2- 4

      POSITION FOR ATTACHING SAFETY LABELS 2- 5

      SAFETY LABELS 2- 6  GENERAL PRECAUTIONS 2- 11

      PRECAUTIONS DURING OPERATION 2- 19

      STARTING ENGINE 2- 19

      OPERATION 2- 21

      TRANSPORTATION 2- 25

      BATTERY 2- 26

      TOWING 2- 28

      PRECAUTIONS FOR MAINTENANCE 2- 29

      PRECAUTIONS WITH TIRES 2- 35

    OPERATION 3- 1

      GENERAL VIEW 3- 2

      GENERAL VIEW OF MACHINE 3- 2

      GENERAL VIEW OF CONTROLS AND GAUGES 3- 3

      EXPLANATION OF COMPONENTS 3- 6

      METERS AND LAMPS 3- 6

      SWITCHES 3- 13

      CONTROL LEVERS, PEDALS 3- 24

      DUST INDICATOR 3- 33

      ARTICULATE LOCK PIN 3- 33

      FUSE BOX 3- 33

      OPERATION 3- 35  CHECK BEFORE STARTING ENGINE 3- 35

      STARTING ENGINE 3- 47

      OPERATIONS, CHECKS AFTER STARTING ENGINE 3- 51

      STOPPING ENGINE 3- 53

      CHECK AFTER STOPPING ENGINE 3- 53

      TRAVELING POSTURE FOR MACHINE 3- 54

      MOVING MACHINE OFF (FORWARD, REVERSE, SHIFTING GEAR), STOPPING 3- 55

      TURNING MACHINE 3- 59

      OPERATING WORK EQUIPMENT 3- 62

      WORK WHICH CAN BE CARRIED OUT USING A MOTOR GRADER 3- 68

      PRECAUTIONS WHEN OPERATION 3- 89

      ADJUSTING WORK EQUIPMENT POSTURE 3- 93

      PARKING MACHINE 3-104

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    FOREWORD   CONTENTS

      CHECKS AFTER COMPLETION OF OPERATION 3-105

      LOCKING 3-106

      HANDLING THE TIRES 3-106

      TRANSPORTATION 3-107

      LOADING, UNLOADING WORK 3-107  PRECAUTIONS FOR LOADING 3-108

      COLD WEATHER OPERATION 3-109

      PRECAUTIONS FOR LOW TEMPERATURE 3-109

      CAUTIONS AFTER COMPLETION OF WORK 3-110

      AFTER COLD WEATHER 3-110

      LONG-TERM STORAGE 3-111

      BEFORE STORAGE 3-111

      DURING STORAGE 3-111

      AFTER STORAGE 3-111

      TROUBLESHOOTING 3-112

      AFTER RUNNING OUT OF FUEL 3-112  WHEN LEANING PIPING IS DAMAGED 3-113

      TOWING THE MACHINE 3-114

      IF BATTERY IS DISCHARGED 3-116

      OTHER TROUBLE 3-119

    MAINTENANCE 4- 1

      GUIDES TO MAINTENANCE 4- 2

      OUTLINES OF SERVICE 4- 4

      HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC 4- 4

      RELATING TO ELECTRIC SYSTEM 4- 6

      WEAR PARTS 4- 7

      WEAR PARTS LIST 4- 7

      USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE 4- 8

      STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS 4- 12

      TORQUE LIST 4- 12

      PERIODIC REPLACEMENT OF CRITICAL PARTS 4- 14

      CRITICAL PARTS 4- 14

      MAINTENANCE SCHEDULE CHART 4- 15

      MAINTENANCE SCHEDULE CHART 4- 15

      SERVICE PROCEDURE 4- 17

      INITIAL 250 HOURS SERVICE (only after the first 250 hours) 4- 17

      WHEN REQUIRED 4- 18  CHECK BEFORE STARTING 4- 30

      EVERY 50 HOURS SERVICE 4- 31

      EVERY 250 HOURS SERVICE 4- 32

      EVERY 500 HOURS SERVICE 4- 47

      EVERY 1000 HOURS SERVICE 4- 53

      EVERY 2000 HOURS SERVICE 4- 59

      EVERY 4000 HOURS SERVICE 4- 64

    SPECIFICATIONS 5- 1

      SPECIFICATIONS 5- 2

    ATTACHMENTS, OPTIONS 6- 1

      HANDLING BLADE ACCUMULATOR 6- 2

      FEATURES OF BLADE ACCUMULATOR 6- 2

      METHOD OF OPERATING BLADE ACCUMULATOR 6- 3

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    SAFETYSAFETY INFORMATION

    SAFETY INFORMATION

    SAFETY LABELS 2- 4

      POSITION FOR ATTACHING SAFETY LABELS 2- 5

      SAFETY LABELS 2- 6

    GENERAL PRECAUTIONS 2- 11

      SAFETY RULES 2- 11

      IF ABNORMALITIES ARE FOUND 2- 11

      CLOTHING AND PERSONAL PROTECTIVE ITEMS 2- 11

      FIRE EXTINGUISHER AND FIRST AID KIT 2- 11

      SAFETY FEATURES 2- 11

      KEEP MACHINE CLEAN 2- 12

      INSIDE OPERATOR'S COMPARTMENT 2- 12

      ALWAYS APPLY LOCK WHEN LEAVING OPERATOR'S SEAT 2- 12

      HANDRAILS AND STEPS 2- 13  MOUNTING AND DISMOUNTIN 2- 13

      DO NOT GET CAUGHT IN ARTICULATED PORTION 2- 13

      PREVENTION OF BURNS 2- 14

      FIRE PREVENTION 2- 14

      ACTION IF FIRE OCCURS 2- 15

      WINDOW WASHER LIQUID 2- 15

      PRECAUTIONS WHEN USING ROPS (Roll Over Protective Structure) 2- 15

      PRECAUTIONS FOR ATTACHMENTS 2- 16

      UNAUTHORIZED MODIFICATION 2- 16

      SAFETY AT WORKSITE 2- 16

      WORKING ON LOOSE GROUND 2- 16

      DO NOT GO CLOSE TO HIGH-VOLTAGE CABLES 2- 17

      ENSURE GOOD VISIBILITY 2- 17

      VENTILATION FOR ENCLOSED AREAS 2- 17

      CHECKING SIGNALMAN'S SIGNALS AND SIGNS 2- 18

      EMERGENCY ESCAPE FROM OPERATOR'S CAB 2- 18

      ASBESTOS DUST HAZARD PREVENTION 2- 18

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    SAFETY   SAFETY INFORMATION

    PRECAUTIONS DURING OPERATION 2- 19

      STARTING ENGINE 2- 19

      CHECKS BEFORE STARTING ENGINE, ADJUST 2- 19

      PRECAUTIONS WHEN STARTING 2- 19

      PRECAUTIONS IN COLD AREAS 2- 20  OPERATION 2- 21

      CHECKS BEFORE STARTING OPERATION 2- 21

      PRECAUTIONS BEFORE MOVING OFF 2- 21

      PRECAUTIONS WHEN TRAVELING 2- 21

      PRECAUTIONS WHEN TRAVELING ON SLOPES 2- 22

      PRECAUTIONS WHEN OPERATIONS ON SLOPES 2- 23

      PROHIBITED OPERATIONS 2- 23

      PRECAUTIONS WHEN OPERATING 2- 23

      OPERATE CAREFULLY ON SNOW 2- 23

      PARKING MACHINE 2- 24

      TRANSPORTATION 2- 25  LOADING AND UNLOADING 2- 25

      SHIPPING 2- 25

      BATTERY 2- 26

      BATTERY HAZARD PREVENTION 2- 26

      STARTING WITH BOOSTER CABLES 2- 27

      TOWING 2- 28

      WHEN TOWING 2- 28

    PRECAUTIONS FOR MAINTENANCE 2- 29

      WARNING TAG 2- 29

      KEEP WORK PLACE CLEAN AND TIDY 2- 29

      APPOINT LEADER WHEN WORKING WITH OTHERS 2- 29

      STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE 2- 30

      TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING 2- 31

      PROPER TOOLS 2- 31

      ACCUMULATOR 2- 32

      PERSONNEL 2- 32

      ATTACHMENTS 2- 32

      WORK UNDER THE MACHINE 2- 32

      NOISE 2- 32

      PRECAUTIONS WHEN USIN HAMMER 2- 33  REPAIR WELDING 2- 33

      REMOVING BATTERY TERMINAL 2- 33

      PRECAUTIONS WITH HIGH-PRESSURE OIL 2- 33

      HANDLING HIGH-PRESSURE HOSES 2- 34

      WASTE MATERIALS 2- 34

      MAINTENANCE OF AIR CONDITIONER 2- 34

      COMPRESSED AIR 2- 34

      PERIODIC REPLACEMENT OF SAFETY-CRITICAL PARTS 2- 34

    PRECAUTIONS WITH TIRES 2- 35

      HANDLING TIRES 2- 35

      PRECAUTIONS WHEN STORING TIRE OPERATION 2- 35

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    SAFETYSAFETY LABELS

    SAFETY LABELSThe following warning signes and safety labels are used on this machine.

    Be sure that you fully understand the correct position and content of labels.

    To ensure that the content of labels can be read properly, be sure that they are in the correct place and always

    keep them clean. When cleaning them, do not use organic solvents or gasoline. These may cause the labels topeel off.

    There are also other labels in addition to the warning signes and safety labels. Handle those labels in the same

    way.

    If the labels are damaged, lost, or cannot be read properly, replace them with new ones. For details of the part

    numbers for the labels, see this manual or the actual label, and place an order with Komatsu distributor.

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    SAFETY   SAFETY LABELS

    POSITION FOR ATTACHING SAFETY LABELS

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    SAFETYSAFETY LABELS

    SAFETY LABELS(1) Precautions before operating (09651-03001) (2) Precautions for opening hydraulic cap

     (09653-03001)

    (3) Precautions when driving in reverse

    (09802-43000)

    (4) Danger when approaching (09812-13000)

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    SAFETY   SAFETY LABELS

    (5) Warning for high voltage (09801-43001) (6) Articulate lock (09161-33000)

    (7) Warning for handling accumulator

    (09659-53000)

    (8) Precautions for high temperature cooling water

    (09668-03001)

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    SAFETYSAFETY LABELS

    (9) Roll-over protective structure

    (09620-30201)

    (10) Prohibited to walk (23B-53-31740)

    (11) Precautions when engine running (09667-03001) (12) Precautions when handling booster cable and

    battery cable (09808-03000)

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    SAFETY   SAFETY LABELS

    (13) Prohibited to enter (09162-33000) (14) Precautions when startling and traveling

    (23B-53-31740)

    (15) Exhaust pipe is hot ! (09817-K088B)

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    SAFETYSAFETY LABELS

    (16) Precautions for brake (23B-53-31670)

    (17) Precautions when handling battery (18) Precautions when handling battery

     (09664-30082)

    (19) Jump start prohibited (09842-A0481)

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    SAFETY   GENERAL PRECAUTIONS

    GENERAL PRECAUTIONS

    SAFETY RULESOnly trained and authorized personnel can operate and maintain the machine.

    Follow all safety rules, precautions and instructions when operating or performing maintenance on the machine.If you are under the influence of alcohol or medication, your ability to safely operate or repair your machine may

    be severly impaired putting yourself and everyone else on your jobsite in danger.

    When working with another operator or with a person on worksite traffic duty, be sure that all personnel

    understand all hand signals that are to be used.

    IF ABNORMALITIES ARE FOUNDIf you find any abnormality in the machine during operation or maintenance (noise, vibration, smell, incorrect

    gauges, smoke, oil leakage, etc., or any abnormal display on the warning devices or monitor), report to the person

    in charge and have the necessary action taken. Do not operate the machine until the abnormality has been

    corrected.

    CLOTHING AND PERSONAL PROTECTIVE ITEMSDo not wear loose clothing and accessories. There is a hazard that they may catch on control levers or other

    protruding parts.

    If you have long hair and it hangs out from your hard hat, there

    is a hazard that it may get caught up in the machine, so tie your

    hair up and be careful not to let it get caught.

    Always wear a hard hat and safety shoes. If the nature of the

    work requires it, wear safety glasses, mask, gloves, ear plugs,

    and safety belt when operating or maintaining the machine.

    Check that all protective equipment functions properly before

    using it.

    FIRE EXTINGUISHER AND FIRST AID KITAlways follow the precautions below to prepare for action if any injury or fire should occur.

    Be sure that fire extinguishers have been provided and read the

    labels to ensure that you know howto use them in emergencies.

    Carry out periodic inspection and maintenance to ensure that

    the fire extinguisher can always be used.

    Provide a first aid kit at the storage point. Carry out periodicchecks and add to the contents if necessary.

    SAFETY FEATURESBe sure that all guards and covers are in their proper position. Have guards and covers repaired immediately if

    they are damaged.

    Understand the method of use of safety features and use them properly.

    Never remove any safety features. Always keep them in good operating condition.

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    SAFETYGENERAL PRECAUTIONS

    KEEP MACHINE CLEANIf water gets into the electrical system, there is a hazard that it will cause malfunctions or misoperation. Do not

    use water or steam to wash the electrical system (sensors, connectors).

    If inspection and maintenance is carried out when the machine

    is still dirty with mud or oil, there is a hazard that you will slip andfall, or that dirt or mud will get into your eyes. Always keep the

    machine clean.

    INSIDE OPERATOR'S COMPARTMENT

    When entering the operator's compartment, always remove all mud and oil from the soles of your shoes.If you operate the pedal with mud or oil affixed to your shoes, your foot may slip and this may cause a serious

    accident.

    Do not leave parts or tools lying around the operator's compartment.

    Do not stick suction pads to the window glass. Suction pads act as a lens and may cause fire.

    Do not use cellular telephones inside the operator's compartment when driving or operating the machine.

    Never bring any dangerous objects such as flammable or explosive items into the operator's compartment.

    ALWAYS APPLY LOCK WHEN LEAVING OPERATOR'S SEAT

    If the work equipmentcontrol levers are touched by mistake, the

    machine may move suddenly, and this may lead to a serious

    accident.

    When leaving the machine, always lower the work equipment

    completely to the ground, set gearshift lever (1) to the P

    (Parking) position, then stop the engine. Use the key to lock all

    the equipment. Always remove the key, take it with you, and

    keep it in the specified place.

    To ensure that there is enough space to get on or off the

    machine, raise the steering column fully when getting off the

    machine.

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    SAFETY   GENERAL PRECAUTIONS

    HANDRAILS AND STEPSTo prevent personal injury caused by slipping or falling off the machine, always do as follows.

    Use the handrailsand steps markedby arrows in the diagram on

    the right when getting on or off the machine.

    To ensure safety, always face the machine and maintain

    three-point contact (both feet and one hand, or both hands and

    onefoot) with the handrailsand steps to ensure that you support

    yourself.Do notgrip the control leverswhen getting on or off the machine.

    Never climb on the engine hood or covers where there are no

    non-slip pads.

    Before getting on or off the machine, check the handrails and

    steps, and if there is any oil, grease, or mud on them, wipe it off

    immediately. In addition, repair any damage and tighten any

    loose bolts.

    Do notget on or off the machine while holding tools in your hand.

    MOUNTING AND DISMOUNTINGNever jump on or off the machine. Never get on or off a moving machine.

    If the machine starts to move when there is no operator on the machine, do not jump on to the machine and try

    to stop it.

    DO NOT GET CAUGHT IN ARTICULATED PORTIONThe clearance in the area around the work equipment changes

    according to the movement of the link. If you get caught, it will

    lead to serious injury. Do not allow anyone near any of the

    rotating or telescoping parts.

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    SAFETYGENERAL PRECAUTIONS

    PREVENTION OF BURNSHot coolant

    To prevent burns from hot water or steam spurting out when

    checking or draining the coolant, wait for the water to cool to at

    temperature where it is possible to touch the upper tank cap byhand before starting the operation. Even when the coolant has

    cooled down, loosen the cap slowly to relieve the pressure inside

    the upper tank before removing the cap.

    Hot oil

    To prevent burns from hot oil spurting out when checking or

    draining the oil, wait for the oil to cool to at temperature where

    it is possible to touch the cap or plug by handbefore starting the

    operation. Even when the oil has cooled down, loosen the cap

    or plug slowly to relieve the internal pressure before removing

    the cap or plug.

    FIRE PREVENTIONFire caused by fuel or oil

    Fuel, oil, antifreeze, and window washer liquid are particularly

    flammable and can be hazardous. To prevent fire, always

    observe the following:

    Do not smoke or use any flame near fuel or oil.

    Stop the engine before refueling.

    Do not leave the machine while adding fuel or oil.

    Tighten all fuel and oil caps securely.

    Do not spill fuel on overheated surfaces or on parts of the

    electrical system.

    Use well-ventilated areas for adding or storing oil and fuel.

    Keep oil and fuel in the determined place and do not allow

    unauthorized persons to enter.

    After adding fuel or oil, wipe up any spilled fuel or oil.When carrying out grinding or welding work on the chassis,

    move any flammable materials to a safe place before

    starting.

    When washing parts with oil, use a non-flammable oil. Diesel

    oil and gasoline may catch fire, so do not use them.

    Put greasy rags and other flammable materials into a safe

    container to maintain safety at the work place.

    Do not weld or use a cutting torch to cut any pipes or tubes

    that contain flammable liquids.

    Fire caused by accumulation of flammable material.

    Remove any dry leaves, chips, pieces of paper, dust, or any other flammable materials accumulated or affixed

    around the engine, exhaust manifold, muffler, or battery, or inside the undercovers.

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    SAFETY   GENERAL PRECAUTIONS

    Fire coming from electric wiring

    Short circuits in the electrical system can cause fire.

    Always keep electric wiring connections clean and securely tightened.

    Check the wiring every day for looseness or damage. Tighten any loose connectors or wiring clamps. Repairor replace any damaged wiring.

    Fire coming from hydraulic line

    Check that all the hose and tube clamps, guards, and cushions are securely fixed in position.

    If they are loose, they may vibrate during operation and rub against other parts. This may lead to damage to the

    hoses, and cause high-pressure oil to spurt out, leading to fire damage or serious injury.

    Explosion caused by lighting equipment

    When checking fuel, oil, battery electrolyte, window washer fluid, or coolant, always use lighting with

    anti-explosion specifications. If such lighting equipment is not used, there is danger of explosion that may

    cause serious injury.When taking the electrical power for the lighting from the machine itself, follow the instructions in this manual.

    ACTION IF FIRE OCCURSIf a fire occurs, escape from the machine as follows.

    Turn the start switch OFF to stop the engine.

    Use the handrails and steps to get off the machine.

    WINDOW WASHER LIQUID

    Use an ethyl alcohol base washer liquid.

    Methyl alcohol base washer liquid may irritate your eyes, so do not use it.

    PRECAUTIONS WHEN USING ROPS (Roll Over Protective Structure)Install ROPS when working in places where there is danger of

    falling rocks, such as in mines and quarries, or in places where

    there is danger of rolling over.

    If ROPS is installed, do not remove it when operating the

    machine.

    ROPS is installed to protect the operator when machine rolls

    over. When machine rolls over, ROPS supports its weight and

    absorbs its impact energy.

    If ROPS is modified, its strength may be reduced. Whenmodifying, consult your Komatsu distributor.

    If ROPS is deformed by falling objects or by rolling over, its

    strength lowers and its design functions cannot be maintained.

    In this case, be sure to ask your Komatsu distributor about repair

    method.

    Even if ROPS is installed, always fasten your seat belt properly

    when operating the machine. If you do not use your fasten your

    seat belt properly, it cannot display its effect.

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    SAFETYGENERAL PRECAUTIONS

    PRECAUTIONS FOR ATTACHMENTSWhen installing optional parts or attachments, there may be problems with safety or legal restrictions. Therefore

    contact your Komatsu distributor for advice.

    Any injuries,accidents, or product failures resulting from the use of unauthorized attachments or parts will not be

    the responsibility of Komatsu.When installing and using optional attachments, read the instruction manual for the attachment, and the general

    information related to attachments in this manual.

    UNAUTHORIZED MODIFICATIONAny modification made without authorization from Komatsu can create hazards. Before making a modification,

    consult your Komatsu distributor.

    Komatsu will not be responsible for any injuries, accidents, product failures or other property damages resulting

    from modifications made without authorization from Komatsu.

    SAFETY AT WORKSITE

    Before starting operations, thoroughly check the area for any unusual conditions that could be dangerous.Check the terrain and condition of the ground at the worksite, and determine the safest method of operation. Do

    not carry out operations at places where there is a hazard of landslides or falling rocks.

    If water lines, gas lines, or high-voltage electrical lines may be

    buried under the worksite, contact each utility and identify their

    locations. Be careful not to sever or damage any of these lines.

    Take action to prevent unauthorized people from approaching

    the jobsite.

    When working on public roads, position flagmen and erect

    barriers to ensure the safety of passing traffic and pedestrians.

    When traveling or operating in shallow water or on soft ground,

    check the shape and condition of the bedrock, and the depth

    and speed of flow of the water before starting operations.

    In order that travel operations can be carried out safely, always

    keep the roads on the jobsite properly maintained.

    WORKING ON LOOSE GROUNDAvoid traveling or operating your machine too close to the edge of cliffs, overhangs, and deep ditches. The

    ground may be weak in such areas. If the ground should collapse under the weight or vibration of the machine,

    there is a hazard that the machine may fall or tip over. Remember that the soil after heavy rain or blasting or after

    earthquakes is weak in these areas.

    When working on embankments or near excavated ditches, there is a hazard that the weight and vibration of themachine will cause the soil to collapse. Before starting operations, take steps to ensure that the ground is safe

    and to prevent the machine from rolling over or falling.

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    SAFETY   GENERAL PRECAUTIONS

    DO NOT GO CLOSE TO HIGH-VOLTAGE CABLESDo not travel or operate the machine near electric cables. There is

    a hazard of electric shock, which may cause serious injury or

    property damage. On jobsites where the machine may go close to

    electric cables, always do as follows.Before starting work near electric cables, inform the local power

    company of the work to be performed, and ask them to take the

    necessary action.

    Voltage of Cables Safety Distance

    100 V - 200 V Over 2 m (7ft)

    6,600 V Over 2 m (7ft)

    22,000 V Over 3 m (10 ft)

    66,000 V Over 4 m (14 ft)

    154,000 V Over 5 m (17 ft)

    187,000 V Over 6 m (20 ft)

    275,000 V Over 7 m (23 ft)

    500,000 V Over 11 m (36 ft)

    Even going close to high-voltage cables can cause electric

    shock, which may cause serious burns or even death. Always

    maintain a safe distance (see the table on the right) between the

    machine and the electric cable. Check with the local power

    company about safe operating procedure before startingoperations.

    To prepare for any possible emergencies, wear rubber shoes

    and gloves. Lay a rubbersheet on top of the seat, and be careful

    not to touch the chassis with any exposed part of your body.

    Use a signalman to give warning if the machine approaches too

    close to the electric cables.

    When carrying out operations near high voltage cables, do not

    let anyone come close to the machine.

    If the machine should come too close or touch the electric cable, to prevent electric shock, the operator should

    not leave the operator's compartment until it has been confirmed that the electricity has been shut off.

    Also, do not let anyone come close to the machine.

    ENSURE GOOD VISIBILITYCheck for any persons or obstacles in the area around the machine and check the conditions of the jobsite to

    ensure that operations and travel can be carried out safely. Always do as follows.

    Position a signalman if there are areas at the rear of the machine where the visibility is not good.

    When working in dark places, turn on the working lamp and front lamps installed to the machine, and set up

    additional lighting in the work area if necessary.

    Stop operations if the visibility is poor, such as in mist, snow, rain, or dust.

    VENTILATION FOR ENCLOSED AREASEngine exhaust gas contains substances that may be injurious to

    the health or may even cause death. When starting the engine or

    operating the machine, do it in a place where there is ample

    ventilation.

    If it is necessary to start the engine or operate the machine while

    the machine is indoors or underground, take steps to remove the

    exhaust gas and bring in clean air.

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    SAFETYGENERAL PRECAUTIONS

    CHECKING SIGNALMAN'S SIGNALS AND SIGNSSet up signs to inform of road shoulders and soft ground. If the visibility is not good, position a signalman if

    necessary. Operators should pay careful attention to the signs and follow the instructions from the signalman.

    Only one signalman should give signals.

    Make sure that all workers understand the meaning of all signals and signs before starting work.

    EMERGENCY ESCAPE FROM OPERATOR'S CABThe cab installed on this machine has doors on the left and right sides. If the door on one side does not open,

    escape through the door on the other side.

    ASBESTOS DUST HAZARD PREVENTIONAsbestos dust in the air can causelung cancer if it is inhaled.There

    is danger of inhaling asbestos when working on jobsites handling

    demolitionwork or work handling industrial waste. Always observe

    the following.

    Spray water to keep down the dust when cleaning. Do not usecompressed air for cleaning.

    If there is danger that there may be asbestos dust in the air,

    always operate the machine from an upwind position. All

    workers should use an approved respirator.

    Do not allow other persons to approach during the operation.

    Always observe the rules and regulations for the work site and environmental standards.

    This machine does not use asbestos, but there is a danger that imitation parts may contain asbestos, so always use

    genuine Komatsu parts.

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    SAFETYPRECAUTIONS DURING OPERATION

    PRECAUTIONS IN COLD AREASCarry out the warming-up operation thoroughly. If the machine is not thoroughly warmed up before the steering

    wheel, control levers, gearshift lever, or brake pedal are operated, the reaction of the machine will be slow or may

    suddenly change, and this may lead to an accident. After warming up the engine, operate at low speed and

    check the safety while traveling.If the battery electrolyte is frozen, do not charge the battery or start the engine with a different power source.

    There is a hazard that this will ignite the battery.

    Before charging or starting the engine with a different power source, melt the battery electrolyte and check for

    frost and leakage of battery electrolyte before starting.

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    SAFETY   PRECAUTIONS DURING OPERATION

    OPERATION

    CHECKS BEFORE STARTING OPERATIONWhen carrying out the checks, move the machine to a wide area where there are no obstructions, and operate

    slowly. Do not allow anyone near the machine.Always fasten your seat belt.

    Check the operation of travel, steering and brake systems, and

    work equipment control system.

    Check for any abnormality in the sound of the machine,

    vibration, heat, smell, or gauges; check also that there is no

    leakage of oil or fuel.

    If any abnormality is found, carry out repairs immediately.

    If the operation requires use of the articulation, removearticulate lock pin (1).

    Before traveling on roads, check that articulate lock pin (1) is at

    the LOCK position.

    PRECAUTIONS BEFORE MOVING OFFBefore travelling, check again that there is no one in the surrounding area, and that there are no obstacles.

    Before travelling, sound the horn to warn people in the area.

    Always operate the machine only when seated.

    Do not allow anyone apart from the operator to ride on the machine.

    Check that the back-up alarm (alarm buzzer when machine

    travels in reverse) works properly.

    Fix the operator's compartment doors and windows in position

    securely.

    If there is an area to the rear of the machine which cannot be

    seen, position a signal person.Take special care not to hit othermachines or people when turning or swinging the machine.

    Always be sure to carry out the above precautions even when the machine is equipped with mirrors.

    PRECAUTIONS WHEN TRAVELINGNever turn the key in the starting switch to the OFF position.It is dangerous if the engine stopswhen the machine

    is traveling, because the steering becomes heavy. If the engine stops, depress the brake pedal immediately to

    stop the machine.

    When traveling on rough ground, travel at low speed and do not operate the steering suddenly. There is danger

    that the machine may turn over. The work equipmentmay hit the ground surface and cause the machine to lose

    its balance, or may damage the machine or structures in the area.

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    SAFETYPRECAUTIONS DURING OPERATION   SAFETYPRECAUTIONS DURING OPERATION

    Operate carefully when the wheels are leaning.It is prohibited to

    travel on roads with the wheels leaning.

    Travel at a maximum speed of 10 km/h (6.2 MPH) when using

    the articulation. If the articulation is used when traveling at a

    speed of over 10 km/h (6.2 MPH), there is danger that the

    machine may overturn. Never use the articulation at speeds of

    over 10 km/h (6.2 MPH).

    When traveling or carrying out operations, always keep a safe distance from people, structures, or other

    machines to avoid coming into contact with them.

    When passing over bridges or structures, check first that the structure is strong enough to support the mass of

    the machine.

    When operating in tunnels, underbridges, under electric wires,or other placeswhere theheight is limited,operate

    slowly and be extremely careful not to let the work equipment hit anything.

    If youdrive the machine at high speed continuously for a long time, the tires will overheat andthe internal pressure

    will become abnormally high. This may cause the tires to burst. If a tire bursts, it produces an extremely large

    destructive force, and this may cause serious injury. When traveling continuously, travel for 2 hours or 80 km,

    then rest for 30 minutes. Next, travel for 2 hours, then rest for 1 hour, or contact your Komatsu distributor. If you

    are going to travel continuously, please consult your Komatsu distributor.

    PRECAUTIONS WHEN TRAVELING ON SLOPESTo prevent the machine from tipping over or slipping to the side,

    always do as follows.

    Always travel straight up or down a slope. Traveling at an angle

    or across the slope is extremely dangerous.Do not turn on slopes or travel across slopes. Always go down

    to a flat place to change the position of the machine, then travel

    on to the slope again.

    Travel on grass, fallen leaves, or wet steel plates with low

    speed. Even with slight slopes there is a hazard that the

    machine may slip.

    If the engine stops, depress the brake pedal immediately, lower

    the blade, set the gearshift lever to the P (Parking) position, and

    stop the machine.

    When traveling downhill, never shift gear or place the transmission at neutral. It is dangerous not to use the

    braking force of the engine. Always place the transmission in a low gear before starting to travel downhill.

    When traveling downhill, travel slowly. If necessary, use the braking force of the engine together with the brake

    pedal to control the travel speed.

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    SAFETY   PRECAUTIONS DURING OPERATION

    PRECAUTIONS WHEN OPERATIONS ON SLOPESDo not articulate the machine fully on steep slops. There is danger that the machine may tip over.

    When working on slopes, control the machine speed with the accelerator pedal.

    PROHIBITED OPERATIONSWhen operating at the bottom of a cliff, there is danger that the soil may collapse or that rocks may fall. Never

    operate in such places.

    The edge of cliffs or road shoulders may easily collapse, and there is danger of falling. Do not go close to such

    places.

    Avoid sudden starts, sudden stops, and sudden steering.

    PRECAUTIONS WHEN OPERATINGWhen operating in tunnels, under bridges, under electric wires, or other places where the height is limited, be

    extremely careful not to let the work equipment hit anything.

    To prevent accidents caused by hitting other objects, always operate the machine at a speed which is safe for

    operation, particular in confined spaces, indoors, and in places where there are other machines.Check that there is no person other than the operator within the range of flying objects caused by the operation.

    OPERATE CAREFULLY ON SNOWSnow-covered or frozen surfaces are slippery, so be extremely careful when traveling or operating the machine,

    and do not operate the levers suddenly. Even a slight slope may cause the machine to slip, so be particularly

    careful when working on slopes.

    With frozen ground surfaces, the ground becomes soft when the temperature rises, and this may cause the

    machine to tip over.

    If the machine enters deep snow, there is a hazard that it may tip over or become buried in the snow. Be careful

    not to leave the road shoulder or to get trapped in a snow drift.

    When clearing snow, the road shoulder and objects placed beside the road are buried in the snow and cannot be

    seen. There is a hazard of the machine tipping over or hitting covered objects, so always carry out operations

    carefully.

    When traveling on snow-covered roads, always fit tire chains.

    When travelingon snow-coveredslopes, never apply thebrakes suddenly. Reduce thespeed anduse the engine

    as a brake while appling the foot brake intermittently (depress the brake intermittently several times). If

    necessary, lower the blade to the ground to stop the machine.

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    SAFETYPRECAUTIONS DURING OPERATION

    PARKING MACHINEPark the machine on firm, level ground.

    Select a place where there is no hazard of falling rocks or

    landslides, or of flooding if the land is low.

    Lower the work equipment completely to the ground.

    When leaving the machine, set gearshift lever (1) to the P

    (Parking) position, then stop the engine.

    Always close the operator'scab door, and use the key to lock all

    the equipment in orderto prevent any unauthorizedperson from

    moving the machine. Always remove the key, take it with you,and leave it in the specified place.

    If it is necessary to park the machine on a slope, set blocks

    under the wheels to prevent the machine from moving.

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    SAFETY   PRECAUTIONS DURING OPERATION

    TRANSPORTATION

    LOADING AND UNLOADINGWhen loading or unloading the machine, mistaken operation may

    bring the hazard of the machine tipping over or falling, so particularcare is necessary. Always do as follows.

    Perform loading and unloading on firm, level ground only.

    Maintain a safe distance from the edge of the road or cliff.

    Always use ramps of adequate strength. Be sure that the ramps

    are wide, long, andthick enough to provide a safe loading slope.

    Take suitable steps to prevent the ramps from moving out of

    position or coming off.

    Be sure the rampsurface is clean and free of grease, oil, ice and

    loose materials. Remove dirt from machine-tracks. On a rainy

    day, in particular, be extremely careful since the ramp surface is

    slippery.Run the engine at low speed and travel slowly.

    Never correct your steering on the ramps. If necessary, drive off the ramps, correct the direction, then enter the

    ramps again.

    When loading or unloading to an embankment or platform, make sure that it has suitable width, strength, and

    grade.

    For machines equipped with a cab, always lock the door after boarding the machine. If this is not done, the door

    may suddenly open during transportation.

    Refer to "TRANSPORTATION (PAGE 3-107)".

    SHIPPINGWhen shipping the machine on a trailer, do as follows.

    The weight, transportation height, and overall length of the machine differ according to the work equipment, so

    be sure to confirm the dimensions.

    When passing over bridges or structures on private land, check first that the structure is strong enough to support

    the weight of the machine. When traveling on public roads, check first with the relevant authoritiesand follow their

    instructions.

    Lock the frame with the articulate lock pin to prevent the machine from articulating.

    For details of the shipping procedure, see "TRANSPORTATION (PAGE 3-107)" in the OPERATION section.

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    SAFETYPRECAUTIONS DURING OPERATION

    BATTERY

    BATTERY HAZARD PREVENTIONBattery electrolyte contains sulphuric acid, and batteries generate flammable hydrogen gas, which may explode.

    Mistaken handling can lead to serious injury or fire. For this reason, always observe the following precautions.Do not use or charge the battery if the battery electrolyte level is below the LOWER LEVEL line. This may cause

    an explosion.Always check the battery electrolyte level periodicallyand adddistilledwater to bring the electrolyte

    level to the UPPER LEVEL line.

    When working with batteries, always wear safety glasses and rubber gloves.

    Never smoke or use any flame near the battery.

    If you spill acid on your clothes or skin, immediately flush the

    area with large amount of water.

    If acid gets into your eyes, flush them immediately with large

    amount of water and seek medical attention.

    Beforeworking with batteries, turn the starting switch to the OFF

    position.

    As there is a hazard that sparks will be generated, always do as follows.

    Do not let tools or othermetal objects make any contactbetween the battery terminals.Do not leavetools or other

    metal objects lying around near the battery.

    Always disconnect the negative (-) terminal (ground side) first when removing the battery; when installing the

    battery, connect the positive (+) terminal first, andconnect thegroundlast. Tighten thebattery terminalssecurely.

    Flammable hydrogen gas is generated when the battery is charged, so remove the battery from the chassis, take

    it to a well-ventilated place, and remove the battery caps before charging it.Tighten the battery caps securely.

    Install the battery securely to the determined place.

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    SAFETY   PRECAUTIONS DURING OPERATION

    STARTING WITH BOOSTER CABLESIf any mistake is made in the method of connecting the booster

    cables, it may cause the battery to explode, so always do as

    follows.

    When starting with a booster cable, carry out the startingoperation with two workers (one worker sitting in the operator's

    seat and the other working with the battery).

    When starting from another machine, do not allow the two

    machines to touch.

    When connecting the booster cables, turn the starting switch

    OFF for both the normal machine and problem machine. There

    is a hazard that the machine will move when the power is

    connected.

    Be sure to connect the positive (+) cable first when installing the

    booster cables. Disconnect the negative (-) cable (ground side)

    first when removing them.When removing the booster cables, be careful not to let the

    booster cable clips touch each other or to let the clips touch the

    machine.

    Always wear safety goggles and rubber gloves when starting

    the engine with booster cables.

    When connecting a normal machine to a problem machine with

    booster cables, always use a normal machine with the same

    battery voltage as the problem machine.

    For details of the starting procedure when using booster cables,

    see "STARTING ENGINE WITH BOOSTER CABLE (PAGE

    3-117)" in the OPERATION section.

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    SAFETYPRECAUTIONS DURING OPERATION

    TOWING

    WHEN TOWINGSerious injury or death could result if a disabled machine is towed incorrectly or if there is a mistake in the selection

    or inspection of the wire rope.For towing, see "TOWING THE MACHINE (PAGE 3-114)".

    Always wear leather gloves when handling wire rope.

    During the towing operation, never stand between the towing

    machine and the machine being towed.

    Never tow a machine on a slope.

    Never use a wire rope which has cut strands (A), reduced

    diameter (B), or kinks (C). There is danger that the rope may

    break during the towing operation.

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    SAFETY   PRECAUTIONS FOR MAINTENANCE

    PRECAUTIONS FOR MAINTENANCE

    WARNING TAGAlways attach the "DO NOT OPERATE" warning tag to gear

    shift lever in the operator's cab to alert others that you areperforming service of maintenance on the machine. Attach

    additional warning tags around the machine if necessary.

    Warning tag Part No.09963-03001

    Keep this warning tag in the tool box while it is not used. If there

    is no tool box, keep the tag in the operation manual pocket.

    If others start the engine, or touch or operate the work

    equipment control lever while you are performing service or

    maintenance, you could suffer serious injury or property

    damage.

    KEEP WORK PLACE CLEAN AND TIDYDo not leave hammers or other tools lying around in the work place. Wipe up all grease, oil, or other substances

    that will cause you to slip. Always keep the work place clean the tidy to enable you to carry out operations safely.

    If the work place is not kept claen and tidy, there is the danger that you will trip, slip, or fall over and injure yourself.

    APPOINT LEADER WHEN WORKING WITH OTHERSWhen repairing the machine or when removing and installing the work equipment, appoint a leader and follow his

    instructions during the operation.

    When working with others, misunderstandings between workers can lead to serious accidents.

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    SAFETYPRECAUTIONS FOR MAINTENANCE

    STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCEStop the machine on firm, level ground.

    Select a place where there is no hazard of falling rocks or

    landslides, or of flooding if the land is low.

    Lower the work equipment completely to the ground and stopthe engine.

    After stopping the engine, operate the left and right blade lift

    cylinder control levers fully to the RAISE and LOWER positions

    2 or 3 times to release the pressure remaining in the hydraulic

    circuit, then set gearshift lever (1) to the P (Parking) position.

    Put blocks under the front and rear of the tires.

    Lock the frame with articulate lock pin (1) to prevent the machine

    from articulating.

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    SAFETY   PRECAUTIONS FOR MAINTENANCE

    TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNINGTo prevent injury, do not carry out maintenance with the engine running. If maintenance must be carried out with

    the engine running, carry out the operation with at least two workers and do as follows.

    One worker must always sit in the operator's seat and be ready to stop the engine at any time. All workers must

    maintain contact with the other workers.Set gearshift lever (1) to the P (Parking) position and take action

    to prevent the work equipment from moving.

    When carrying out operations near the fan, fan belt, or other

    rotating parts, there is a hazard of being caught in the parts, so

    be careful not to come close.

    Do not touch any control levers. If any control lever must be

    operated, give a signal to the other workers to warn them to

    move to a safe place.

    Never dropor insert tools or other objects into the fan or fan belt.Parts may break or be sent flying.

    PROPER TOOLSUse only tools suited to the task and be sure to use the tools

    correctly. Using damaged, low quality, faulty, makeshift tools or

    improper use of the tools could cause serious personal injury.

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    SAFETYPRECAUTIONS FOR MAINTENANCE

    ACCUMULATORThe accumulator is charged with high-pressure nitrogen gas.

    When handling the accumulator, careless procedure may cause

    an explosion which could lead to serious injury or property

    damage. For this reason, always observe the followingprecautions.

    Do not disassemble the accumulator.

    Do not bring it near flame or dispose of it in fire.

    Do not make holes in it, weld it, or use a cutting torch.

    Do not hit or roll the accumulator, or subject it to any impact.

    When disposing of the accumulator, the gas must be released.

    Please contact your Komatsu distributor to have this work

    performed.

    PERSONNEL

    Only authorized personnel can service and repair the machine. Do not allow unauthorizedpersonnel into the area.If necessary, employ an observer.

    ATTACHMENTSAppoint a leader before starting removal or installation

    operations for attachments.

    Place attachments that have been removed from the machine in

    a stable condition so that they do not fall. And take steps to

    prevent unauthorized persons from entering the storage area.

    WORK UNDER THE MACHINEIf it is necessary to go under the work equipment or the machine

    to carry out service and maintenance, support the work

    equipment and machine securely with blocks and stands strong

    enough to support the weight of the work equipment and

    machine.

    NOISEIf the noise from the machine is too loud, it may cause temporary or permanent hearing problems. When carrying

    out maintenance of the engine and you are exposed to noise for long periods of time, wear ear covers or ear plugs

    while working.

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    SAFETYPRECAUTIONS FOR MAINTENANCE

    HANDLING HIGH-PRESSURE HOSESIf oil or fuel leaks from high-pressure hoses, there is danger that it may cause fire or defective operation, which may

    lead toserious injuryor fire. If thereare any loose hosesor piping,or anyleakage of oil or fuel fromthe hose or piping

    mount, stop operation and tighten to the specified torque.

    If any hoses or pipes are damaged or deformed, please contact your Komatsu distributor.Replace the hose if any of the following problems are found.

    Damaged or leaking hydraulic fitting.

    Frayed or cut covering or exposed reinforcement wire layer.

    Covering swollen in places.

    Twisted or crushed movable portion.

    Foreign material embedded in covering.

    WASTE MATERIALSTo prevent pollution, pay careful attention to the method of disposing of waste materials.

    Always put oil drained from your machine in containers. Never

    drain oil directly onto the ground or dump into the sewagesystem, rivers, the sea, or lakes.

    Obey appropriate laws and regulations when disposing of

    harmful objects such as oil, fuel, coolant, solvent, filters, and

    batteries.

    MAINTENANCE OF AIR CONDITIONERIf air conditioner refrigerant gets intoyour eyes, it may cause blindness; if it touches your skin, it may cause frostbite.

    Never touch refrigerant.

    COMPRESSED AIRWhen carrying out cleaning with compressed air, there is a hazard of serious injury caused by flying particles.

    When using compressed air to clean elements or the radiator, always wear safety goggles, dust mask, gloves,

    and other protective equipment.

    PERIODIC REPLACEMENT OF SAFETY-CRITICAL PARTS

    In order for the machine to be operated safely for a long time, it is necessary to add oil and to carry out service

    and maintenance at periodic intervals. In order to further increase safety, components with a strong relationshipto safety, such as hoses and seat belts, must be replaced at periodic intervals.

    Replacement of safety-critical parts: See "PERIODIC REPLACEMENT OF CRITICAL PARTS (PAGE 4-14)".

    Thematerial of these componentsnaturally changes over time, andrepeated usecausesdeterioration,wear,and

    fatigue. As a result, there is a hazard that these components may fail and cause serious injury or death. It is

    difficult to judge the remaining life of these components from external inspection or the feeling when operating,

    so always replace them at the specified interval.

    Replace or repair safety-critical parts if any defect is found, even when they have not reached the time specified

    interval.

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    SAFETY   PRECAUTIONS WITH TIRES

    PRECAUTIONS WITH TIRES

    HANDLING TIRESIf tires or rims are handled mistakenly, there is danger that the tire

    may explode or be damaged, or that the rim may fly off and causeserious injury or death.

    To maintain safety, always do as follows.

    Maintenance, disassembly, repair, and assembly of the tires

    and rims requires special equipment and special technology,so

    always ask your Komatsu distributor to carry out these

    operations.

    Always use the tires specified by Komatsu and maintain the

    specified inflation pressure.

    Suitable tire inflation pressure: see "CHECK OF INFLATION

    PRESSURE OF TIRES AND INFLATION OF THEM (PAGE

    4-29)"When pumping up the tires, check that no other person is

    standing near the tire, and install an air chuck with a clip that can

    be secured to the air valve.

    To prevent the tire inflation pressure from becoming too high,

    measure the pressure from time to time with an air gauge while

    pumping up the tire.

    If the tire pressure goes down abnormallyor the rim parts do not

    fit the tire, there is a problem with the tire or rim parts. Always

    contact your Komatsu distributor for repairs.

    If the rim parts are not fitted properly when the tire is being

    pumped up, there is danger that the rim parts may fly off, so set

    up a protective fence around the tire, and do not stand directly

    in front of the rim. Stand beside the tread when pumping up the

    tire.

    Do not adjust the tire inflation pressure immediately after traveling at high speed or carrying out operations under

    heavy load.

    Never carry out welding or light a fire near the tire.

    PRECAUTIONS WHEN STORING TIRE

    Tires forconstructionequipmentareextremelyheavy, so they may

    cause serious personal injury.As a basic rule, store the tires in a warehouse which

    unauthorized persons cannot enter.

    If the tires must be stored outside, always erect a fence and put

    up "No Entry" signs.

    Stand the tire on level ground, and block it securely so that it

    cannot roll or fall over if any person should touch it.

    Do not lay the tire on its side. This will deform the tire and cause

    it to deteriorate.

    If the tire should fall over, do not attempt to stop it. Get out of the

    way quickly.

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    OPERATIONGENERAL VIEW

    GENERAL VIEW

    GENERAL VIEW OF MACHINE

    (1) Front wheel(2) Blade lift cylinder

    (3) Rear wheel

    (4) Head lamp (if equipped)(5) Blade

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    OPERATION   GENERAL VIEW

    GENERAL VIEW OF CONTROLS AND GAUGES

    (1) Inching pedal

    (2) Steering wheel

    (3) Horn button

    (4) Work equipment control lever

    (5) Starting aid switch

    (6) Dimmer switch

    (7) Machine monitor

    (8) Differential lock switch (if equipped)

    (9) Turn signal lever

    (10) Accelerator pedal

    (11) Gearshift lever

    (12) Fuel control lever

    (13) Right side panel

    (14) Decelerator pedal

    (15) Brake pedal

    (16) Steering console tilt pedal

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    OPERATIONGENERAL VIEW

    Machine monitor Right panel

    (1) Engine water temperature gauge

    (2) Speedometer (if equipped)

    (3) Turn signal pilot lamp (if equipped)

    (4) Fuel gauge

    (5) Message center

    (6) Battery charge

    (7) Engine oil pressure

    (8) Brake oil pressure

    (9) Transmission system electric circuit monitor

    (10) Lift arm lock

    (11) Torque converter oil temperature

    (12) Differential oil temperature (if equipped)(13) Differential control (if equipped)

    (14) Blade accumulator (if equipped)

    (15) Working lamp (if equipped)

    (16) Blade float (if equipped)

    (17) Preheating lamp

    (18) High beam of front lamp (if equipped)

    (19) Parking brake

    (20) Articulation gauge

    (21) Torque converter oil temperature gauge

    (22) Starting switch

    (23) Hazard lamp switch (if equipped)

    (24) Working lamp switch (if equipped)

    (25) Blade accumulator/float switch (if equipped)

    (26) Cigarette lighter

    (27) Lift arm lock switch

    (28) Front wiper switch (top)

    (29) Front lamp switch (if equipped)

    (30) Transmission mode selector switch

    (31) Car heater switch (if equipped)

    (32) Additional car heater switch (if equipped)

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    OPERATION   GENERAL VIEW

    Top left inside cab

    (1) Front wiper switch (bottom) (if equipped)

    (2) Rear wiper switch (if equipped)

    (3) Yellow rotating lamp switch (if equipped)

    (4) Front defroster fan switch (if equipped)

    (5) Rear defroster fan switch (if equipped)

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    OPERATIONEXPLANATION OF COMPONENTS

    EXPLANATION OF COMPONENTSThe following is an explanation of the devices needed for operating the machine.

    To carry out suitable operations correctly and safely, it is important to understand fully the methods of operating the

    equipment and the meanings of the displays.

    METERS AND LAMPS

    (1) Engine water temperature gauge

    (2) Speedometer (if equipped)

    (3) Turn signal pilot lamp (if equipped)

    (4) Fuel gauge

    (5) Message center

    (6) Battery charge

    (7) Engine oil pressure lamp(8) Brake oil pressure lamp

    (9) Transmission system electric circuit monitor

    (10) Lift arm lock

    (11) Torque converter oil temperature

    (12) Differential oil temperature (if equipped)

    (13) Differential control (if equipped)

    (14) Blade accumulator (if equipped)

    (15) Working lamp (if equipped)

    (16) Blade float (if equipped)

    (17) Preheating lamp

    (18) High beam of front lamp (if equipped)

    (19) Parking brake(20) Articulation gauge

    (21) Torque converter oil temperature gauge

    (22) Service meter (to the left side of the steering

    wheel column)

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    OPERATION   EXPLANATION OF COMPONENTS

    ENGINE WATER TEMPERATURE GAUGEThis meter (1) displays the engine cooling water temperature.

    During normal operation, the gauge should be in the white range.

    If the gauge goes into the red range during operation, stop the

    machine, run the engine at a mid-range speed under no load, andwait for the temperature to go down to the white range. After

    starting the engine, carry out the warming-up operation until the

    indicator enters the white range.

    SPEEDOMETER(If equipped)

    This meter (2) displays the travel speed of the machine.

    There is an odometer at the bottom of the meter.

    TURN SIGNAL PILOT LAMP(If equipped)

    This lamp (3) flashes at the same time as the turn signal lamp.

    REMARKIf there is a disconnection in the turn signal lamp, the flashing

    interval becomes shorter.

    FUEL GAUGEThis gauge (4) indicates the amount of fuel in the fuel tank.

    E: Little fuel remaining

    F: Full tank

    If the gauge comes close to the E mark, add fuel.

    Fuel tank capacity: 340 liters (89.76 US gal)

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    OPERATIONEXPLANATION OF COMPONENTS

    MESSAGE CENTERThis meter (5) indicates the engine speed, transmission range,

    error code, and machine travel speed.

    When the "MODE" button is pressed, the display changes asfollows:

    AUTO -> engine speed -> transmission range -> error code ->

    monitor brightness adjustment -> version of software -> machine

    travel speed (mph display) -> machine travel speed (km/h display).

    REMARKAUTO always shows the engine speed, but when changing to the transmission range, the transmission range

    is displayed for 3 seconds, and then the display returns to the engine speed display. If any failure occurs in the

    transmission control, the error code is displayed.

    When adjusting the brightness of the monitor, press the SCROLL button to change the brightness of themessage center as follows: 100% -> 25% -> 50% -> 100%.

    Theerrorcodealwaysdisplays [E--0]. If anyother display appears, see"OTHERTROUBLE (PAGE 3-119)",and

    contact your Komatsu distributor for repairs.

    BATTERY CHARGEThis lamp (6) warns of any abnormality in the charging system

    when the engine is running.

    If it flashes, check the charging circuit. Stop the engine, and check

    for any looseness of the V-belt. If any abnormality is found, see

    "OTHER TROUBLE (PAGE 3-119)".

    ENGINE OIL PRESSUREThis lamp (7) lights up to warn that the engine lubricating oil

    pressure has dropped. It lights up when the starting switch is

    turned ON, and goes out after the engine stops.

    If it lights up during operation, stop the engine immediately, andcheck for any abnormality. For details, see "OTHER TROUBLE

    (PAGE 3-119)".

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    OPERATION   EXPLANATION OF COMPONENTS

    BRAKE OIL PRESSUREThis lamp (8) lights up to warn that the oil pressure in the brake

    circuit has dropped.

    If it lights up, stop the engine immediately, and check for leakage

    of oil from the brake circuit.

    TRANSMISSION SYSTEM ELECTRIC CIRCUIT MONITORThis lamp (9) lights up when there is any failure, disconnection, or

    short circuit in the electrical equipment and it has become

    impossible to carry out the normal gear- shifting function of thetransmission. Read the error code displayed on the controller and

    contact your Komatsu distributor for repairs.

    LIFT ARM LOCKThis lamp (10) lights up when the lift arm is not locked.

    TORQUE CONVERTER OIL TEMPERATUREThis lamp (11) lights up to warn that the torque converter oil

    temperature has risen.

    If it lights up, stop the machine, run the engine at a midrange speed

    under no load, and wait for the lamp to go out.

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    OPERATIONEXPLANATION OF COMPONENTS

    DIFFERENTIAL OIL TEMPERATURE(If equipped)

    This lamp (12) lights up to warn that the differential oil temperature

    has risen.

    If it lights up, check the oil level in the final drive case. If there is noabnormality, set the differential to UNLOCK and wait for the lamp

    to go out.

    DIFFERENTIAL CONTROL(If equipped)

    This lamp (13) lights up when the differential is locked.

    BLADE ACCUMULATOR(If equipped)

    This lamp (14) lights up when the blade accumulator switch is

    turned ON.

    This protects the operator and work equipment when carrying out

    leveling work on road surfaces where there are many rocks.

    WORKING LAMP(If equipped)

    This lamp (15) lights up when the working lamp switch is turned

    ON.

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    OPERATION   EXPLANATION OF COMPONENTS

    BLADE FLOAT(If equipped)

    This lamp (16) lights up when the blade accumulator/float switch

    switch is turned ON.

    This is effective for snow-clearing operations.

    PREHEATING LAMPThis lamp (17) displays the preheating time when starting the

    engine at temperatures of 5°C (41°F) or below.

    When the starting switch is turned to the HEAT position, the lamplights up for approx. 20 seconds.

    When it goes out, it shows that the preheating has been

    completed.

    HIGH BEAM OF FRONT LAMP(If equipped)This lamp (18) lights up to indicate that the head lamps are at

    BEAM.

    PARKING BRAKEThis lamp (19) lights up to indicate that the gearshift lever is at the

    P (Parking) position.

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    OPERATIONEXPLANATION OF COMPONENTS

    ARTICULATION GAUGEThis gauge (20) indicates the angle between the front frame and

    rear frame.

    When the key is at the OFF position, the gauge indicator is at the

    left side, and when the switch is at the ON position, it shows theangle of the machine body.

    TORQUE CONVERTER OIL TEMPERATURE GAUGEThis gauge (21) indicates the torque converter oil temperature.

    When the pointer of the temperature gauge shows the green

    range, the oil temperature is normal.When the pointer enters the red range, stop the machine

    immediately, and run the engine at 1900 rpm with the gear shift

    lever in neutral until the oil temperature drops to the normal value.

    SERVICE METERThis meter (22) displays the accumulated hoursof operation of the

    machine.

    The service meter reading advances by 1 for every hour that the

    engine is running, regardless of the engine speed.

    The service meter will advance while the engine is running even if

    the machine is not moving.

    The meter is installed to the left side of the steering wheel column.

    REMARKWhen the engine is running, the operation display at the top of the

    meter rotates to indicate that the meter is advancing.

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    OPERATION   EXPLANATION OF COMPONENTS

    SWITCHES

    (1) Starting switch

    (2) Starting aid switch

    (3) Front lamp switch (if equipped)(4) Working lamp switch (if equipped)

    (5) Blade accumulator/float switch (if equipped)

    (6) Cigarette lighter

    (7) Lift arm lock switch

    (8) Front wiper switch (top)

    (9) Hazard lamp switch (if equipped)

    (10) Transmission mode selector switch

    (11) Dimmer switch (if equipped)

    (12) Differential lock switch (if equipped)(13) Turn signal lever (if equipped)

    (14) Horn button

    (15) Car heater switch (if equipped)

    (16) Additional car heater switch (if equipped)

    (17) Fresh/recirc selector switch (if equipped)

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    OPERATIONEXPLANATION OF COMPONENTS

    Top right inside cab Top left inside cab

    (18) Room lamp switch (19) Front wiper switch (bottom) (if equipped)

    (20) Rear wiper switch (if equipped)

    (21) Yellow rotating lamp switch (if equipped)

    (22) Front defroster fan switch (if equipped)

    (23) Rear defroster fan switch (if equipped)

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    OPERATION   EXPLANATION OF COMPONENTS

    STARTING SWITCHThis switch (1) is used to start or stop the engine.

    OFF

    The starting key can be inserted and removed at this position.When the key is turned to this position, the electric circuit is turned

    off and the engine stops.

    ON

    Electricity flows to the charging circuit and lamp circuit.

    START

    This is the position for starting the engine. Keep the key at this

    position while cranking the engine. When the engine starts,

    release the key immediately.

    The key returns automatically to the ON position.

    HEAT position

    Set to this position when starting the engine in cold weather.

    If the key is held at the HEAT position, the electrical heater will be heated and the preheat monitor will light up.

    When the preheating is completed, the preheating monitor will go out.

    When the preheating monitor goes out, release the key immediately.

    If the key is released, it will return to the OFF position. Stop the engine with the key at the OFF position, then turn

    the key to the START position to start the engine.

    REMARKWhen the preheating lamp goes out in cold weather, continue preheating for a further 10 seconds before releasing

    the key.

    STARTING AID SWITCHUse this switch (2) when starting the engine in cold weather (-21°

    C (-5.8°F) or below).

    If this switch (2) is pressed when the engine is being started, the

    load on the hydraulic pump will be reduced and this will make it

    easier for the engine to start. When the engine starts and the

    engine speed rises to a stable condition, release the switch.

    Position (a) (when pressed): ON

    Position (b) (when released): OFF

    This switch functions only when the gearshift lever is at the P

    (Parking) position.

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    OPERATIONEXPLANATION OF COMPONENTS

    FRONT LAMP SWITCH(If equipped)

    This switch (3) is used to light up the front lamps, side clearance

    lamps, tail lamps, and instrument panel.

    Position (a) (pushed back): OFFPosition (b): Side clearance lamps, tail lamps, and instrument

    panel light up

    Position (c) (pushed forward): Front lamps light up in addition to

    lamps at position (b).

    WORKING LAMP SWITCH(If equipped)

    This switch (4) is used to light up the working lamp.

    Position (a) (pushed back): OFFPosition (b) (pushed forward): Working lamp lights up

    BLADE ACCUMULATOR/FLOAT SWITCH(If equipped)

    This switch (5) is used to actuate the blade accumulator and float.

    Position (a) (neutral): OFF

    Position (b) (pushed forward): Blade float ON

    Position (c) (pushed back): Blade accumulator ON

    REMARKThe blade accumulator is effective in leveling road surfaces on

     jobsites where there are many rocks or when clearing

    compressed snow.

    The blade float is effective when clearing fresh snow.

    CIGARETTE LIGHTERThis switch (6) is used to remove or insert the lifter lock pin.

    This switch is used when setting the blade to the bank cut posture

    or shoulder reach posture. Press the switch to remove the pin;

    press the switch again to return the switch and insert the pin.

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    OPERATION   EXPLANATION OF COMPONENTS

    LIFT ARM LOCK SWITCH

     WARNINGLower the blade to the ground before removing the bank control lock pin. Do not remove it at any other position. There is danger

    that it will rotate and the blade will fall.

    This switch (7) is used to remove or insert the lifter lock pin.

    This switch is used when setting the blade to the bank cut posture

    or shoulder reach posture. Press the switch to remove the pin;

    press the switch again to return the switch and insert the pin.

    FRONT WIPER SWITCH (TOP)This switch (8) is used to operate the wiper at the top of the front

    glass.

    Position (a): Washer liquid is sprayed out

    Position (b): Wiper is operated

    Position (c): Wiper is operate and washer liquid is sprayed out

    HAZARD LAMP SWITCH(If equipped)

     WARNINGNever use the hazard lamp except in emergencies. If it is used while traveling when there is no abnormality, it may cause

    misunderstanding for drivers of other vehicles.

    The emergency lamp is used only in emergencies. This switch (9)

    is used to make the emergency lamp flash when there is a failure

    or when the machine has to be parked on the road.

    Position (a) (pushed back): OFF

    Position (b) (pushed forward): All turn signal lamps flash

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    OPERATIONEXPLANATION OF COMPONENTS

    TRANSMISSION MODE SELECTOR SWITCHThis switch (10) switches the gearshifting pattern of the transmission.

    Position (b) (push forward): Mode 1

    When carrying out work with the same operating feeling as theconventional direct power shift (hydroshift), select Mode 1.

    Use Mode 1 in the following cases:

    When carrying out work with production efficiency raised to the

    maximum.

    When carrying out snow clearing or other work with the

    gearshift range fixed.

    Position (a) (push back): Mode 2

    When carrying out work in the torque converter drive with easy-to-operate automatic gearshifting, select Mode 2.

    When traveling in a high-gear speed range at a speed of 10 km/h (6.2 MPH) or above, this automatically shifts tothe lock-up with its more efficient power transmission.

    Use Mode 2 in the following cases:

    When carrying out work with big variation in load, where the engine is likely to stall (F1 - F4)

    When carrying out snow-clearing work in high-gear speed range at a speed of 10 km/h (6.2 MPH) or above

    When traveling under own power.

     : Manual gearshifting uses the torque converter lock-up from the beginning

      With automatic gearshifting, when the travel speed rises and the torque converter slippage is reduced, the

    transmission is automatically locked up.

     : Remains in torque converter drive (torque converter drive is held, regardless of travel speed or engine speed)

    Manual gearshifting: Transmission is held in same gear range as position of gearshift lever

    Automatic gearshifting: Transmission is automatically shifted according to travel speed within maximum range set

    by position of gearshift lever

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    OPERATION   EXPLANATION OF COMPONENTS

    REMARKWhen Mode 1 is selected, the engine may stall because of the use of direct power shift.

    When Mode 2 is selected and work is carried out in F1 with the engine at low idling, it becomes easier to perform

    light load operations, such as finishing work at low travel speed (approx. 1 km/h (0.6 MPH)).

    When Mode 2 is selected and the gear speed range is set between F5 and F8, the transmission is shiftedautomatically. With automatic transmission, the transmission starts in F4 torque converter drive, and shifts up

    automatically as necessary through the gear speeds to the set gear speed range.

    Even if the gearshift lever is shifted, if there is danger of overrun, the overrun inhibitor is actuated to prevent

    gearshifting. When the travel speed drops to a speed where there is no danger of overrun, the transmission

    starts to shift again.

    DIMMER SWITCH(If equipped)

    This switch (11) is used to switch the head lamps between high

    beam and low beam.

    (a) High beam(b) Low beam

    DIFFERENTIAL LOCK SWITCH(If equipped)

    This switch (12) is used to actuate the differential lock.

    Position (a) (pushed back): Differential lock actuated

    Position (b) (pushed forward): OFF

    TURN SIGNAL LEVER(If equipped)

    This lever (13) is used to operate the turn signal lamps.

    (a)Left turn: Operate the lever up

    (b)Right turn: Operate the lever down

    The lever does not return to its original position when the steering

    lever is returned to the straight position. Return the lever by hand.

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    OPERATIONEXPLANATION OF COMPONENTS

    HORN BUTTONWhen horn button (14) in the center of the steering wheel is

    pressed, the horn will sound.

    CAR HEATER SWITCH(if equipped)

    Use this switch (15) to turn the heater ON/OFF and to regulate the

    air flow (3 levels).Position (a): OFF

    Position (b): ON, low air flow

    Position (c): ON, medium air flow

    Position (d): ON, high air flow

    ADDITIONAL CAR HEATER SWITCH(if equipped)

    Use this switch (16) to increase the heater capacity.

    Position (a): OFF

    Position (b): ON, low air flow

    Position (c): ON, medium air flow

    Position (d): ON, high air flow

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    OPERATION   EXPLANATION OF COMPONENTS

    FRESH/RECIRC SELECTOR SWITCH(if equipped)

    This switch (17) is used to choose introduction of fresh air from outside or recirculation of the air inside the cab.

    Pull the switch to position (a) to take in outside air; push the switch

    to position (b) to circulate the air inside the cab.

    ROOM LAMP SWITCH

    This switch (18) is used to light up the room lamp.ON position: Lamp lights up

    OFF position: Lamp goes out

    FRONT WIPER SWITCH (BOTTOM)(If equipped)

    This switch (19)actuates the wiper for the bottom of the front glass.

    Position (a): OFF

    Position (b): Wiper actuated

    Position (c): Washer fluid sprayed out

    REAR WIPER SWITCH(If equipped)

    This switch (20) actuates the wiper for the rear glass.

    Position (a): OFF

    Position (b): Wiper actuated

    Position (c): Washer fluid sprayed out

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    OPERATIONEXPLANATION OF COMPONENTS

    YELLOW ROTATING LAMP SWITCH(If equipped)

    This switch (21) is used to light up and rotate the rotating lamp.

    Position (a): OFF

    Position (b): Rotating lamp lights up

    REMARKThe yellow rotating lamp is used when carrying out operations, but

    follow the guidance of the supervisor.

    FRONT DEFROSTER FAN SWITCH(If equipped)

    This switch (22) is used to actuate the front defroster fan.Position (a) (pushed back): OFF

    Position (b) (pushed forward): Front defroster fan actuated

    This is the switch installed to the defroster and can be used to stop

    or start operation of the defroster.

    REAR DEFROSTER FAN SWITCH

    (If equipped)This switch (23) is used to actuate the rear defroster fan.

    Position (a) (pushed back): OFF

    Position (b) (pushed forward): Rear defroster fan actuated

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    OPERATIONEXPLANATION OF COMPONENTS

    CONTROL LEVERS, PEDALS

    (1) Left blade lift cylinder control lever

    (2) Ripper/Scarifier control lever (if equipped)

    (3) Blade side shift control lever

    (4) Power tilt control lever

    (5) Blade rotation control lever

    (6) Articulate control lever

    (7) Front attachment control lever

    (8) Drawbar side shift control lever

    (9) Leaning control lever

    (10) Right blade lift cylinder control lever

    (11) Inching pedal

    (12) Steering console tilt pedal

    (13) Brake pedal

    (14) Accelerator pedal

    (15) Decelerator pedal

    (16) Gearshift lever

    (17) Fuel control lever

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    OPERATION   EXPLANATION OF COMPONENTS

    LEFT BLADE LIFT CYLINDER CONTROL LEVERThis lever (1) operates the left blade lift cylinder.

    (a) LOWER: The left side of the blade goes down.

    (b) HOLD: The blade stops and is held in the same position.

    (c) RAISE: The left side of the blade goes up.

    RIPPER/SCARIFIER CONTROL LEVER(If equipped)

    This lever (2) is used to operate the ripper or scarifier.

     

    When the machine is equipped with a ripper

    (a) LOWER: The ripper is lowered.

    (b) HOLD: The ripper is stopped and held in position.

    (c) RAISE: The ripper is raised.

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    OPERATIONEXPLANATION OF COMPONENTS   OPERATIONEXPLANATION OF COMPONENTS

    When the machine is equipped with a scarifier

    (a) LOWER: The scarifier is lowered.

    (b) HOLD: The scarifier is stopped and held in position.

    (c) RAISE: The scarifier is raised.

    BLADE SIDE SHIFT CONTROL LEVERThis lever (3) shifts the blade to the side.

    (a) LEFT SHIFT: The blade is shifted to the left position.

    (b) HOLD: The blade stops and is held in the same