Komatsu D375A-8 Operation & Maintenance Manual
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Komatsu D375A-8 Operation & Maintenance Manual

Bulldozer
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Table of Contents

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Operation &
Maintenance Manual
D375A
BULLDOZER
SERIAL NUMBER
D375A-8
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. This manual should be kept inside the cab for
reference and periodically reviewed by all personnel who
will come into contact with the machine.
- 80001
and up
-8
ORIGINAL INSTRUCTIONS
EENAM03603

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Роман
April 29, 2025

Где находятся заливные горловины масла на бульдозер D375

0
1 comments:
Mr. Anderson
May 15, 2025

The oil fill ports on the Komatsu D375A-8 bulldozer are located on the right side of the machine.

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Related Manuals for Komatsu D375A-8

Summary of Contents for Komatsu D375A-8

  • Page 1 Operation & EENAM03603 Maintenance Manual D375A BULLDOZER SERIAL NUMBER D375A-8 - 80001 and up WARNING ORIGINAL INSTRUCTIONS 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 Komatsu or Ko- matsu approved rebuilt parts or assemblies or others parts of equivalent quality, and that the engine be serviced by an authorized Komatsu distribu- tor. Failure to follow these recommendations could result in ineffective serv- ice, damage to the product or safety risks (including personal injury or death).
  • Page 4 It is provided on the back side of the operator's seat back. If this manual is lost or damaged, contact Komatsu or your Komatsu distributor and tell them about the machine model name and the serial No. immediately to arrange for its replacement.

  • Page 5: Komatsu Machine Operator Privacy Policy

    Belgium, with registered office at 1800 Vilvoorde, Belgium, Mechelsesteenweg 586, registered in Brussels un- der number RPR/CER(0)404.968.268 ("Komatsu Europe", together with the other Komatsu subsidiaries in the EEA referred to as "we" or "us"). Komatsu Europe acts as Komatsu's representative in the EU with respect to MMS.
  • Page 6 FOREWORD • pictures, videos and sound recordings 4. Why is your personal data processed? When you use Komatsu machines equipped with MMS, your personal data are processed for the following rea- sons: (a) Safety and security (b) Warranty (c) Misuse and theft prevention...
  • Page 7 (30) days after having received the request. If you have any complaint regarding the processing of your personal data by Komatsu or Komatsu Europe via MMS, you may always contact us via the e-mail address mentioned in the first paragraph of this clause. If you...

  • Page 8: Safety Information

    SAFETY INFORMATION FOREWORD SAFETY INFORMATION To enable you to use the machine safely, and to prevent personal injury to operators, service personnel or by- standers, the precautions and warnings included in this manual and the safety signs attached to the machine must always be observed.

  • Page 9: Noise

    FOREWORD NOISE NOISE Two labels indicating the machine noise level are affixed on the machine. • Sound pressure level at the operator’s station, measured according to ISO 6396 (Dynamic test method, simulated working cycle). The maximum value of the standard deviation of the meas- ured time-averaged A-weighted emission sound pressure level at the operator’s position is 2.5dB, in accordance with ISO 11201...

  • Page 10: Vibration Levels

    VIBRATION LEVELS FOREWORD VIBRATION LEVELS When used for its intended purpose, levels of vibration for the earth-moving machine transmitted from the oper- ator's seat are lower than or equal to the tested vibrations for the relative machinery class in compliance with ISO 7096.
  • Page 11 FOREWORD VIBRATION LEVELS • Do not repeatedly handle and lift loads...

  • Page 12: Introduction

    INTRODUCTION FOREWORD INTRODUCTION MAIN USE OF MACHINE This Komatsu machine is designed to be used mainly for the following work: • Dozing work • Slot dozing work • Operation on slope • V-shape ditching work • Cutting and ditching of hard or frozen ground •...
  • Page 13 FOREWORD INTRODUCTION • Scale-interval of the circles is 1 m. 1-11...

  • Page 14: Engine Technology To Conform Exhaust Gas Emission

    ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION About Engine Technology This engine technology uses Komatsu Diesel Particulate Filter (KDPF) to conform EPA Tier4 Final emission reg- ulation in North America. • Komatsu Diesel Particulate Filter (KDPF): A device which captures diesel particular matter or soot in the exhaust gas to purify exhaust gas.

  • Page 15: Product Information

    FOREWORD PRODUCT INFORMATION PRODUCT INFORMATION When requesting service or ordering replacement parts, inform your Komatsu distributor of the following items. LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERI- AL NO. PLATE This is under the front of the console box on the right side of the operator's seat.

  • Page 16: Location Of Blade Serial No. Plate

    PRODUCT INFORMATION FOREWORD (EPA regulation plate is at the intake connector side on the right side of the engine in view of the fan side.) EPA: Environmental Protection Agency, USA LOCATION OF BLADE SERIAL NO. PLATE This is at the upper right of the blade back face. FLUORINATED GREENHOUSE GASES Product contains fluorinated greenhouse gases.

  • Page 17: Location Of Ripper Serial No. Plate

    FOREWORD PRODUCT INFORMATION LOCATION OF RIPPER SERIAL NO. PLATE This is on the left side face of ripper beam. LOCATION FOR ROPS AND FOPS PLATE (ROPS plate) It is on the left side of ROPS. (FOPS plate) It is on the left side of cab. SERVICE METER LOCATION This is displayed on the machine monitor.
  • Page 18 PRODUCT INFORMATION FOREWORD Manufacturers name: Serial number 40001 and up Serial number B60001 and up Address: KOMATSU LTD. Komatsu do Brazil 2-3-6 Akasaka Rodovia Índio Tibiriçá, 2000 Minato-ku, Tokyo 107-8414 Suzano - SP CEP: 08655-000 Japan Brazil Authorised representative: KOMATSU EUROPE INT.

  • Page 19: Serial Plate

    FOREWORD SERIAL PLATE SERIAL PLATE EI000001 MACHINE DESIGNATION/TYPE ENGINE POWER SERIAL NUMBER PRODUCT IDENTIFICATION NUMBER YEAR OF CONSTRUCTION MANUFACTURER OPERATING MASS AUTHORISED REPRESENTATIVE 1-17...

  • Page 20: Declaration Of Conformity

    DECLARATION OF CONFORMITY FOREWORD DECLARATION OF CONFORMITY The manufacturer/Authorised representative The manufacturer Authorised representative KOMATSU LTD. KOMATSU EUROPE INT. 2-3-6 Akasaka Mechelsesteenweg 586 Minato-ku, Tokyo 107-8414 B-1800 Vilvoorde Japan Belgium Declares that this machine: D375A-8 Fulfils all the relevant provisions of following EC Directives:...

  • Page 21: Table Of Contents

    FOREWORD TABLE OF CONTENTS TABLE OF CONTENTS FOREWORD..............................1-1 READ THIS MANUAL ..........................1-2 KOMATSU MACHINE OPERATOR PRIVACY POLICY ................1-3 SAFETY INFORMATION .......................... 1-6 NOISE............................... 1-7 VIBRATION LEVELS ..........................1-8 VIBRATION - OPERATING CONDITION ................... 1-8 GUIDE TO REDUCE VIBRATION LEVELS ON MACHINE ..............1-8 INTRODUCTION ............................
  • Page 22 PRECAUTIONS FOR TOWING MACHINE ..................3-240 PRECAUTIONS FOR DISCHARGED BATTERY ................3-242 OTHER TROUBLE......................... 3-246 MAINTENANCE............................... 4-1 PRECAUTIONS FOR MAINTENANCE ..................... 4-2 CHECK SERVICE METER READING ....................4-2 KOMATSU GENUINE REPLACEMENT PARTS ................4-2 KOMATSU GENUINE LUBRICANTS ....................4-2 1-20...
  • Page 23 EVERY 8000 HOURS MAINTENANCE ................... 4-83 EVERY 9000 HOURS MAINTENANCE ................... 4-83 SPECIFICATIONS ............................5-1 SPECIFICATIONS ............................ 5-2 SPECIFICATIONS : D375A-8 ......................5-2 ATTACHMENTS AND OPTIONS ........................6-1 GENERAL PRECAUTIONS ........................6-2 PRECAUTIONS FOR SAFETY ......................6-2 ATTACHMENTS AND OPTIONS ......................6-3 TRACK SHOES SELECTION ......................
  • Page 24 CONSUMABLE PARTS ........................7-3 RECOMMENDED FUEL, COOLANT, AND LUBRICANT ................7-5 LUBRICATION CHART ........................7-5 METHOD FOR USING FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERA- TURE ............................. 7-7 RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU GENUINE OILS ....7-8 INDEX................................8-1 1-22...

  • Page 25: Safety

    SAFETY Please read and make sure that you fully understand the precautions descri- bed in this manual and the safety labels on the machine. When operating or servicing the machine, always follow these precautions strictly.

  • Page 26: Safety Labels

    If the safety labels are damaged, lost, or cannot be read properly, replace them with new ones. For details of the part numbers for the safety labels, see this manual or the actual label, and place an order to your Komatsu distributor. •...

  • Page 27: Location Of Safety Labels

    SAFETY SAFETY LABELS LOCATION OF SAFETY LABELS 1. Caution for operation, inspection and maintenance 10. Caution for handling accumulator 2. Caution before moving in reverse 11. Caution for use of seat belt 3. Caution for moving in reverse 12. Caution for approach when machine moving 4.

  • Page 28: Contents Of Safety Labels

    SAFETY LABELS SAFETY 18. Caution for not getting on engine hood 19. Caution for not getting on fuel tank CONTENTS OF SAFETY LABELS Caution for operation, inspection and mainte- nance “09651-A0641” • Warning! • Read manual before operation, maintenance, disassembly, assembly and transportation.
  • Page 29 SAFETY SAFETY LABELS Caution when leaving operator's seat “09654-B0641” • Sign indicates a hazard of unexpected moving of stopped machine. • Lower working device to ground, move safety lever to look position and take engine key with you before leaving ma- chine.
  • Page 30 SAFETY LABELS SAFETY Caution for check and adjust track tension “195–98–23932” Safety label is attached to the back side of the inspection cover of the track frame. • Sign indicates a hazard of flying plug from track adjuster that could cause injury. •...
  • Page 31 If any modification is applied to the ROPS, it may affect the strength and may not comply with the standard. Do not drill, cut or weld on the ROPS structure. Any modification is 09620-A3001 Komatsu Ltd. 2-3-6 Akasaka, Minato-ku, Tokyo, Japan 09620-B2001 prohibited.
  • Page 32 SAFETY LABELS SAFETY Caution about high-pressure for common rail “6271–81–2981” • Do not open high pressure fuel system with engine run- ning. Engine operation causes high fuel pressure. • High pressure fuel spray can cause serious injury or death. Prohibition of start by short-circuiting “09842-A0362”...
  • Page 33 SAFETY SAFETY LABELS Caution for not getting on fuel tank “09805–C0641” • Sign indicates a hazard of falling. • Do not stand on this place here. 09805-C0641...

  • Page 34: General Precautions Common To Operation And Maintenance

    If any abnormality or problem is found, contact your Komatsu distributor. PRECAUTIONS BEFORE STARTING OPERATION ENSURE SAFE OPERATION •...

  • Page 35: Precautions To Prevent Fire

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- SAFETY NANCE • If water gets into the electrical system, electric devices will cause malfunctions, and the machine will cause error. If the machine cause error, it may move unexpectedly and cause serious personal injury or death. When washing the machine with water or steam, do not allow the water or steam to come into direct contact with electrical compo- nents.
  • Page 36 Fire around the machine due to highly heated exhaust gas This machine is equipped with Komatsu Diesel Particulate Filter (hereafter KDPF). 2-12...

  • Page 37: Precautions When Getting On Or Off Machine

    If the handrails and steps are damaged or deformed, they need to be repaired immediately. Ask your Komatsu dis- tributor to perform this work. • Do not grip the control levers, parking brake lever, or work equipment lock lever when getting on or off the machine.
  • Page 38 GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY • 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. LIFTING OF PERSONNEL PROHIBITED Under no circumstances should this machine be used for the lifting of personnel.

  • Page 39: Do Not Get Caught In Work Equipment

    • If the protective structure is damaged or deformed by falling objects or by rolling over, its strength will be reduced and it will not be able to fulfill its function properly. In such cases, always consult your Komatsu distributor.

  • Page 40: Precautions When Running Engine Inside Building

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING The engine exhaust gas contains substances that may damage your health or even cause death. Start or operate the engine in a place where there is good ventilation. If the engine or ma- chine must be operated inside a building or underground, where the ventilation is poor, take steps to ensure that the en- gine exhaust gas is removed and that ample fresh air is...

  • Page 41: Precautions For Operation

    SAFETY PRECAUTIONS FOR OPERATION PRECAUTIONS FOR OPERATION PRECAUTIONS FOR JOBSITE INVESTIGATE AND CONFIRM JOBSITE CONDITIONS On the jobsite, there are various hidden dangers that may lead to serious personal injury or death. Before start- ing operations, always check the following to confirm that there is no danger on the jobsite. •...
  • Page 42 PRECAUTIONS FOR OPERATION SAFETY VOLTAGE MIN. DISTANCE 500 kV to 750 kV 10.7 m 750 kV to 1000 kV 13.8 m • To prepare for any possible emergencies, wear rubber shoes and gloves. Lay a rubber sheet on the opera- tor's seat, and be careful not to touch the chassis with any exposed part of your body. •...

  • Page 43: Start Engine

    Always observe the regulations for jobsite and environmental standards. This machine does not contain asbestos, but any part which is not the genuine part, it has risk of containing asbestos. Always use Komatsu genuine parts. START ENGINE USE WARNING TAGS If there is a “DANGER! Do NOT operate!”...
  • Page 44 If the machine is equipped with cameras, adjust the cam- eras to have a good rear view and a good view of sur- rounding area from the operator's seat. For the adjustment, please contact your Komatsu distribu- tor. • Adjust the armrest to a position for easier operation, and fix it securely. Operation in an improper position can cause a serious personal injury or death.

  • Page 45: Precautions For Operation

    SAFETY PRECAUTIONS FOR OPERATION • Be sure to connect the positive (+) cable first when installing the jumper cables. Disconnect the negative (-) cable (ground side) first when removing them. • When disconnecting the jumper cables, take care not to bring the clips in contact with each other or with the machine.
  • Page 46 PRECAUTIONS FOR OPERATION SAFETY • When driving the machine on a level ground, keep the work equipment at the height of 40 to 50 cm above the ground. If that height is not maintained between the work equipment and the ground, the work equipment may get stuck in the ground and the machine may tip over.
  • Page 47 SAFETY PRECAUTIONS FOR OPERATION PRECAUTIONS WHEN OPERATING MACHINE • Be careful not to approach too close to the edge of cliffs. When making embankments or landfills, or when dropping soil over a cliff, dump one pile, then use the next pile of soil to push the first pile. •...

  • Page 48: Precautions For Transportation

    • This machine may need to be divided into components for transportation depending on the regulation. When transporting the machine, consult your Komatsu distributor. PRECAUTIONS WHEN LOADING AND UNLOADING If handling is wrong when loading or unloading the machine, it is dangerous that the machine may tip over or fall.

  • Page 49: Towing And Being Towed

    SAFETY PRECAUTIONS FOR OPERATION TOWING AND BEING TOWED PRECAUTIONS FOR TOWING AND BEING TOWED Always use the correct towing equipment and towing method. Any mistake in the selection of the wire rope or drawbar or the method of towing a disabled machine and being towed may lead to serious personal injury or death.

  • Page 50: Precautions For Maintenance

    PRECAUTIONS FOR MAINTENANCE SAFETY PRECAUTIONS FOR MAINTENANCE PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE DISPLAY WARNING TAG DURING INSPECTION AND MAINTENANCE During inspection and maintenance, always display the “DAN- GER! Do NOT operate!” warning tag. If there is a “DANGER! Do NOT operate!” warning tag dis- played, it means that someone is performing inspection and maintenance of the machine.
  • Page 51 END OF SERVICE LIFE • For safe dismantling of the machine at the end of service life, please contact your Komatsu distributor. STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE If you are caught or pinched between the work equipment during operation, or exposed to high-temperature or high-pressure liquids, it is dangerous and may cause serious personal injury or death.
  • Page 52 PRECAUTIONS FOR MAINTENANCE SAFETY • Rotating parts such as the fan, fan belt are dangerous that they may easily catch a body part or an object someone wears. Be careful not to come close to the rotating part. • Never drop or insert tools or other objects into the fan, fan belt, or other rotating parts.

  • Page 53: Precautions For Check And Maintenance

    SAFETY PRECAUTIONS FOR MAINTENANCE PRECAUTIONS WHEN WORKING UNDER MACHINE OR WORK EQUIPMENT Machine or work equipment may fall, and it is dangerous that serious personal injury or death may occur. Al- ways observe the following. • Make sure the hoists or hydraulic jacks you use are in good condition and strong enough to handle the weight of the component.
  • Page 54 PRECAUTIONS FOR MAINTENANCE SAFETY HANDLE BATTERY Before inspecting or handling the battery, turn the key in the starting switch to OFF position and check that the system operating lamp is off. Then set the battery disconnect switch to OFF position and remove the switch key. Danger of battery exploding When the battery is being charged, flammable hydrogen gas is generated and may explode.
  • Page 55 SAFETY PRECAUTIONS FOR MAINTENANCE • If hard metal parts such as pins, bucket teeth, cutting edges, or bearings are hit with a hammer, pieces might be scattered, and it may cause serious personal injury or death. Always wear protective eyeglasses and gloves. •...
  • Page 56 If the hose or piping mounts are loose or oil or fuel is found to be leaking from the mount, stop operations and tighten to the specified torque. If any damaged or deformed hoses or piping are found, consult your Komatsu distributor. Replace the hose if any of the following problems are found.
  • Page 57 If it is disassembled by mistake, the spring may shoot out and cause serious personal injury or death. If it is necessary to disassemble it, ask your Komatsu distributor to perform the work. ACCUMULATOR AND GAS SPRING This machine is equipped with an accumulator.
  • Page 58 During maintenance or dismantling operations, where there is the risk of contact with hazardous chemical sub- stances, relevant safety precautions should be taken. If any doubt exists, contact your Komatsu distributor. See also “PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS (2-34)” and “MAINTENANCE OF AIR CONDITIONER (2-34)”...

  • Page 59: Operation

    OPERATION Please read and make sure that you understand the SAFETY section before reading this section.

  • Page 60: General View

    GENERAL VIEW OPERATION GENERAL VIEW MACHINE EQUIPMENT NAME (1) Blade (6) Ripper (2) Blade lift cylinder (7) Track (3) Cab (8) Sprocket (4) ROPS (9) Track frame (5) Fuel tank (10) Frame...

  • Page 61: Controls And Gauges Names

    OPERATION GENERAL VIEW CONTROLS AND GAUGES NAMES (1) Parking brake lever (14) Engine shutdown secondary switch (2) Work equipment lock lever (15) Additional working lamp switch (if equipped) (3) Engine emergency shut down switch (if equipped) (16) Access light switch (if equipped) (4) Cigarette lighter (17) Brake pedal (5) Fuel control dial...
  • Page 62 GENERAL VIEW OPERATION Machine monitor equipment name AA: Standard screen, BB: Check before starting screen, CC: Maintenance time warning screen (1) Air conditioner control switch (19) Reverse travel slow mode pilot lamp (2) Work equipment automation switch (20) Dual tilt mode pilot lamp (3) Buzzer cancel switch (21) Floating mode pilot lamp (4) Operation mode selector switch...
  • Page 63 OPERATION GENERAL VIEW REMARK The above figure does not show all of the caution lamp symbols.

  • Page 64: Explanation Of Components

    EXPLANATION OF COMPONENTS OPERATION EXPLANATION OF COMPONENTS The following is an explanation of devices necessary to operate the machine. To perform suitable operations correctly and safely, it is important to completely understand methods of operat- ing the equipment, and the meanings of the displays. EXPLANATION OF MACHINE MONITOR EQUIPMENT AA: Standard screen, EE: Warning or Error screen, DD: Guidance screen (1) Warning display...
  • Page 65 After the opening screen GG is displayed for 2 seconds, the screen switches to the camera image CC. • If the camera image CC is not displayed, there can be a failure. In this case, ask your Komatsu distributor for repair.
  • Page 66 EXPLANATION OF COMPONENTS OPERATION BASIC OPERATION OF MACHINE MONITOR WHEN STARTING ENGINE WHILE ENGINE SHUTDOWN SECONDARY SWITCH IS ON While engine shutdown secondary switch (1) is ON (engine is stopped), when the starting switch is turned to ON position, the screen shown in the figure is displayed and engine does not start.
  • Page 67 EXPLANATION OF COMPONENTS End screen when any message has been received If there is any message from your Komatsu distributor, it is dis- played on the end screen. In this case, turn the starting switch to ON position to re-check the message, and if the message is requesting a response, make a reply to it.
  • Page 68 Do not use it for the purpose of security enhancement. Komatsu cannot accept any responsibility for any loss or damage resulting from the wrong use of ID or unauthorized use of ID by a third party.
  • Page 69 OPERATION EXPLANATION OF COMPONENTS BASIC OPERATION OF MACHINE MONITOR WHEN STARTING ENGINE IN AB- NORMAL SITUATION • If there is any abnormality when starting the engine, the check before starting screen BB changes to the maintenance time warning screen CC, warning screen FF, or error screen EE. •...
  • Page 70 EXPLANATION OF COMPONENTS OPERATION If there is any error existing, “！” is displayed on top of switch Press switch F5 to check the detail of the current abnormality. “Current Abnormality” screen is displayed. BASIC OPERATION OF MACHINE MONITOR WHEN TROUBLE OCCURS WHILE OPERATING MACHINE If any abnormality occurs during operation, the standard screen AA changes to the abnormality screen EE.
  • Page 71 OPERATION EXPLANATION OF COMPONENTS Press switch F5 to check the detail of the current abnormality. “Current Abnormality” screen is displayed. WARNING DISPLAY NOTICE Appearance of any of action levels “L01” to “L04” on the machine monitor indicates presence of an ab- normality the machine.
  • Page 72 EXPLANATION OF COMPONENTS OPERATION (*): Displayed items change according to setting of the multi-gauge. For details of the multi-gauge, see “MULTI GAUGE”. Standard screen When 1 type of caution is generated, it is displayed on caution lamp (2). When 2 types of caution are generated, they are displayed on caution lamps (2) and (3). When 3 types or more of caution are generated, they are displayed on caution lamps (2) and (3) alternately at intervals of 2 seconds.
  • Page 73 Sounds inter- Lights up in │ mittently If the condition is not improved, ask your Komatsu distributor ↓ for inspection and maintenance. Some functions may be restricted for use, but the machine Does not Lights up in can operate.
  • Page 74 EXPLANATION OF COMPONENTS OPERATION Display color/ Machine condition (Action level) Symbol Type of caution lamp Yellow Blue White Fuel level caution lamp Low level Normal Abnormal Abnormal System caution lamp (L04, L03) (L01) Abnormal Abnormal Work equipment system caution lamp (L04, L03) (L01) Abnormal...
  • Page 75 OPERATION EXPLANATION OF COMPONENTS Display color/ Machine condition (Action level) Symbol Type of caution lamp Yellow Blue White Low coolant Radiator coolant level caution level lamp (L01) Abnormal Charge level caution lamp (L03) Clogged Air cleaner clogging caution lamp (L01) Abnormal Air conditioner system caution lamp...
  • Page 76 EXPLANATION OF COMPONENTS OPERATION CURRENT ABNORMALITY DISPLAY SWITCH If there is any abnormality currently generated, “!” is displayed on top of switch F5. While “!” is displayed, press switch F5 to shift the monitor dis- play screen to the Current Abnormality screen. Take appropriate remedies according to the displayed mes- sage.
  • Page 77 OPERATION EXPLANATION OF COMPONENTS ENGINE COOLANT TEMPERATURE CAUTION LAMP Engine coolant temperature caution lamp warns about states caused by engine coolant temperature. When abnormal The caution lamp lights up in red and indicates action level “L02”. The engine coolant temperature is abnormally high. While this lamp is lit, the overheat prevention system is auto- matically actuated and the engine speed drops.
  • Page 78 When action level “L03” is displayed The caution lamp lights up in red and the alarm buzzer sounds intermittently. Stop the operation and move the machine to a safe place, then ask your Komatsu distributor for inspection and maintenance. When action level “L01” is displayed The caution lamp lights up in yellow.
  • Page 79 The caution lamp lights up in red and the alarm buzzer sounds intermittently. Stop the operation, move the machine to a safe place, and then ask your Komatsu distributor for the inspection and maintenance. When action level “L01” is displayed The caution lamp lights up in yellow.
  • Page 80 When action level “L03” is displayed The caution lamp lights up in red and the alarm buzzer sounds intermittently. Stop the work, move the machine to a safe place, and then ask your Komatsu distributor for inspection and maintenance. When action level “L01” is displayed The caution lamp lights up in yellow.
  • Page 81 When action level “L03” is displayed The caution lamp lights up in red and the alarm buzzer sounds intermittently. Stop the work, move the machine to a safe place, and then ask your Komatsu distributor for inspection and maintenance. When action level “L01” is displayed The caution lamp lights up in yellow.
  • Page 82 When action level “L03” is displayed The caution lamp lights up in red and the alarm buzzer sounds intermittently. Stop the work, move the machine to a safe place, and then ask your Komatsu distributor for inspection and maintenance. When action level “L01” is displayed The caution lamp lights up in yellow.
  • Page 83 The alarm buzzer sounds intermittently. Charging is not be performed normally while the engine is run- ning. Stop the engine and check the alternator belt and air condition- er compressor belt for damage, then ask your Komatsu distrib- utor for inspection and maintenance. 3-25...
  • Page 84 The caution lamp lights up in yellow and indicates action level “L01”. The air conditioner system has abnormality. Ask your Komatsu distributor for inspection and maintenance as soon as possible. MAINTENANCE TIME CAUTION LAMP Maintenance time caution lamp displays notices and alarms concerning maintenance time.
  • Page 85 The caution lamp lights up in red, and the action level “L03” is displayed. The alarm buzzer sounds intermittently. Hydraulic components will be damaged. Stop the operation im- mediately and ask your Komatsu distributor for the inspection and maintenance. LADDER SYSTEM CAUTION LAMP (if equipped) The ladder system caution lamp warns about abnormality in the mechanical system of ladder.
  • Page 86 The caution lamp lights up in yellow, and the action level “L01” is displayed. The ladder system has abnormality. Ask your Komatsu distributor for the inspection and mainte- nance as soon as possible. PILOT DISPLAY AND METER DISPLAY Pilot display 1.
  • Page 87 Pilot lamp goes out: Air conditioner OFF MESSAGE DISPLAY The User Message is displayed when there is a message from Komatsu. To read the message, see “Message display”. Lights up in green (A): There is unread message. Lights up in blue (B): There is any read message to which no reply is made.
  • Page 88 EXPLANATION OF COMPONENTS OPERATION OPERATING MODE DISPLAY The currently set operating mode is displayed on the operating mode display. The display of the operating mode is as follows. (P): For heavy-duty operations Lights up when the mode is set to power mode. (E): For operations with emphasis on fuel consumption Lights up when the mode is set to economy mode.
  • Page 89 OPERATION EXPLANATION OF COMPONENTS AFTERTREATMENT DEVICES REGENERATION DISABLE PILOT LAMP The aftertreatment devices regeneration disable pilot lamp lights up when the post processing system is set not to be re- generated. REMARK Even if the aftertreatment devices regeneration is disabled, when the manual stationary regeneration is necessary, KDPF soot accumulation caution lamp lights up.
  • Page 90 EXPLANATION OF COMPONENTS OPERATION ECO GUIDANCE The guidance for energy saving operation to reduce the fuel consumption may be displayed during operation. The details of the guidance are as follows: Idling Stop Guidance If no operation is performed for more than 5 minutes, and the engine is idling, the idling stop message is displayed on the machine monitor.
  • Page 91 OPERATION EXPLANATION OF COMPONENTS Overload Prevention Guidance If the machine is overloaded during work, overload prevention message is displayed. Fuel consumption can be reduced by avoiding shoe slip or op- erating the machine in the green zone of ECO gauge. Overload prevention guidance goes out more than 5 seconds later or when switch F5 is pressed.
  • Page 92 EXPLANATION OF COMPONENTS OPERATION FLOATING MODE PILOT LAMP The float mode pilot lamp lights up when the machine is in the float mode. How to set float mode While pressing the top button of the blade control lever, move the lever to the LOWER stroke end. How to cancel float mode Press the top button of the blade control lever or move the blade control lever from the HOLD position to RAISE or LOW-...
  • Page 93 OPERATION EXPLANATION OF COMPONENTS SPEED RANGE DISPLAY The gear speed display section indicates the following informa- tion. The travel gear speed of the machine (F1 for FORWARD 1st, R2 for REVERSE 2nd) is displayed in top left area (a). The gear shift mode is displayed in top right area (b). The preset mode is displayed in bottom area (c).
  • Page 94 EXPLANATION OF COMPONENTS OPERATION Display (H) when temperature is proper: Back ground (K) of en- gine coolant temperature caution lamp lights up in blue. Display (J) when temperature is abnormal: Back ground (K) of engine coolant temperature caution lamp lights up in red. POWER TRAIN OIL TEMPERATURE GAUGE The power train oil temperature gauge indicates the power train oil temperature.
  • Page 95 OPERATION EXPLANATION OF COMPONENTS Red range (A) position: Hydraulic oil temperature caution lamp (E) shows abnormality display. Red range (B) position: Engine speed changes to a middle level, hydraulic oil temperature caution lamp (E) shows abnormality display, and alarm buzzer sounds at the same time. The overheat prevention system continues to operate until the indicator enters the green range.
  • Page 96 EXPLANATION OF COMPONENTS OPERATION • Service meter display • Clock display (12-hour display) • Clock display (24-hour display) ECO GAUGE / DRAWBAR PULL GAUGE The ECO gauge/ drawbar pull gauge displays ECO gauge (in- stantaneous fuel consumption) (C) or drawbar pull gauge (work load) (D).
  • Page 97 OPERATION EXPLANATION OF COMPONENTS FUEL CONSUMPTION GAUGE Fuel consumption gauge shows the average fuel consumption of the machine. (A): Shows the average fuel consumption of a day (from 0:00 a.m. of the day to 0:00 a.m. of the next day). (B): Shows the split fuel consumption under measurement.
  • Page 98 EXPLANATION OF COMPONENTS OPERATION When the monitor display shows the standard screen, the types of guidance icons and functions of function switches are as follows: For the details of each function, see the detailed explanation of each item. (A) Switch F1: Dual tilt mode switch (Only machines equipped with dual tilt function) (B) Switch F2: Multi-gauge selector switch (C) Switch F3: Camera image selector switch...
  • Page 99 OPERATION EXPLANATION OF COMPONENTS (H) Switch F1 or F3: Moves to the left item. (When on the left end, it moves to the right end.) (I) Switch F2 or F4: Moves to the right item. (When on the right end, it moves to the left end.) (J) Switch F3: Moves to the item below (forward).
  • Page 100 EXPLANATION OF COMPONENTS OPERATION AIR CONDITIONER SWITCH The air conditioner switch consists of 9 switches. For explanation of each switch, see “HANDLE AIR CONDI- TIONER”. OPERATING MODE SELECTOR SWITCH The operating mode selector switch is used for switching the working mode of the engine. Normally, it is possible to perform all operations in E mode, and this mode reduces fuel consumption.
  • Page 101 OPERATION EXPLANATION OF COMPONENTS Method for setting each item and saving memory Press the switch F3 or F4 on the customize mode select screen to set the yellow cursor to the target item of setting change and press F6 key. The setting change screen for the selected item is dis- played.
  • Page 102 EXPLANATION OF COMPONENTS OPERATION Press the switch F3 or F4 to move the yellow cursor to a memory number (M1 to M5) to call up. As the cursor is set to the number, the setting stored in the memory is displayed in the right side of the screen. Press the switch F6 to call up the selected setting.
  • Page 103 OPERATION EXPLANATION OF COMPONENTS WORK EQUIPMENT AUTOMATION SWITCH The work equipment automation switch is used for turning ON/OFF the functions of auto-pitch and ripper auto-return. When this switch is turned ON, the auto-pitch and ripper auto- return functions can be used in the mode set on the Mode Se- lect screen.
  • Page 104 EXPLANATION OF COMPONENTS OPERATION • While the auto-pitch function is in operation, Auto-pitch pilot lamp lights up in yellow. • While the auto-pitch function is interrupted, Auto-pitch pilot lamp flashes. Auto-pitch mode • While the machine is traveling forward, each time the auto- pitch button (P) of the work equipment control lever is pressed, the blade pitch angle is set automatically for dig- ging and hauling position (Q) or dumping position (R) alter-...
  • Page 105 OPERATION EXPLANATION OF COMPONENTS Each operation while auto-pitch mode is ON Reverse Gear Machine operation when auto-pitch interlock Blade button is pressed position Steering Blade lift Blade tilt Ripper setting pitch Neutral Pitches back fully to digging or doz- ing (Q) position Pitches back fully automatically to digging or dozing (Q) position 2 seconds after joystick is set in RE-...
  • Page 106 EXPLANATION OF COMPONENTS OPERATION Each operation while auto-pitch mode is ON Reverse Gear Machine operation when auto-pitch interlock Blade button is pressed position Steering Blade lift Blade tilt Ripper setting pitch Forward Auto-pitch function does not work Neutral Pitches back fully to digging or doz- ing (Q) position Pitches back fully automatically to digging or dozing (Q) position 2 sec-...
  • Page 107 OPERATION EXPLANATION OF COMPONENTS This function is used for storing the ripper automatically when the machine travels in reverse after ripping operation. • Since the ripper does not need to be controlled manually, the operator's work load is decreased. • This function can be turned ON and OFF with the work equipment automation switch on the monitor switch section.
  • Page 108 EXPLANATION OF COMPONENTS OPERATION Lift and tilt interlocked operation • While the machine is traveling in reverse after the ripper control lever is set in LIFT RAISE position (a), the ripper rises to the stroke end automatically even if the ripper con- trol lever is returned to NEUTRAL position (b).
  • Page 109 OPERATION EXPLANATION OF COMPONENTS Lift and tilt independent operation • While the machine is traveling in reverse after the ripper control lever is set in LIFT RAISE position (a), the ripper rises to the stroke end automatically even if the ripper con- trol lever is returned to NEUTRAL position (b).
  • Page 110 EXPLANATION OF COMPONENTS OPERATION Lift only • While the machine is traveling in reverse after the ripper control lever is set in LIFT RAISE position (a), the ripper rises to the stroke end automatically even if the ripper con- trol lever is returned to NEUTRAL position (b). •...
  • Page 111 OPERATION EXPLANATION OF COMPONENTS CAMERA IMAGE SELECTOR SWITCH On the standard screen, press switch F3 to switch to the cam- era image display. Other mode operations while camera image is displayed Even during the camera image is displayed, it is possible to op- erate following modes.
  • Page 112 EXPLANATION OF COMPONENTS OPERATION • It is possible to change the gear shift mode by pressing the gear shift mode selector switch. When the gear shift mode is changed, the screen returns automatically to the standard screen. • It is possible to change the customize setting by pressing the customize switch.
  • Page 113 OPERATION EXPLANATION OF COMPONENTS Actions against warning during camera image display • If any abnormality is generated on the machine while the camera image is displayed, the caution lamp flashes at the top left of the screen. • If the caution lamp is displayed, press switch F6 to return to the standard screen, and check the content of the ab- normality or warning display.
  • Page 114 EXPLANATION OF COMPONENTS OPERATION SERVICE METER / CLOCK DISPLAY SELECTOR SWITCH By pressing switch F4, you can switch the service meter and clock display on the standard screen. • When the clock is being displayed, press switch F4 to switch to the service meter display. When the service meter is being displayed, press switch F4 to switch to the clock display.
  • Page 115 OPERATION EXPLANATION OF COMPONENTS Multi gauge selection item Remarks Engine speed With caution lamp Travel speed Work equipment pump pres- sure Engine oil pressure With caution lamp Battery voltage With caution lamp Drawbar pull Load graph Pitch graph Clock display Approximate values indicated by the multi gauge are as follows.
  • Page 116 EXPLANATION OF COMPONENTS OPERATION Engine oil pressure (1) 0.0 MPa {0 kg/cm (2) 0.08 MPa {1 kg/cm (3) 0.3 MPa {3 kg/cm (4) 0.4 MPa {4 kg/cm (5) 0.5 MPa {5 kg/cm (6) 0.7 MPa {7 kg/cm Battery voltage (1) 0 V (2) 15 V (3) 20 V (4) 25 V (5) 30 V (6) 31 V Drawbar pull (1) 0 W (2) 0.2 W (3) 0.4 W...
  • Page 117 OPERATION EXPLANATION OF COMPONENTS Clock display USER MENU DISPLAY SWITCH On the standard screen, press switch F6 to display the user menu screen on which you can make various settings for the machine in the monitor display. USER MENU The user menu consists of the following kinds. Press switches F1 and F2 to move to right and left for selecting menu screens.
  • Page 118 EXPLANATION OF COMPONENTS OPERATION (a) “Energy Saving Guidance” • Check of “Operation Records” • Check of “ECO Guidance Records” • Check and reset of “Average Fuel Consumption Record” • “Configurations” (b) “Machine Setting” • “Fan Reverse Mode” • “Auto Idle Stop Timer Setting” •...
  • Page 119 OPERATION EXPLANATION OF COMPONENTS (f) Mail Check • Check of mail contents and reply to mail Operation on user menu screen On the user menu screen, it is possible to perform the following operations with switches F1 to F6. F1: Moves to the left menu. When on the left end menu, it moves to the right end menu.
  • Page 120 EXPLANATION OF COMPONENTS OPERATION ENERGY SAVING GUIDANCE Each item of “Energy Saving Guidance” menu (a) is used for displaying and setting the notification relevant to energy saving. CHECK OPERATION RECORDS Select “Operation Records” (1) from “Energy Saving Guidance” menu screen, then press switch F6. On “Operation Records”...
  • Page 121 OPERATION EXPLANATION OF COMPONENTS CHECK ECO GUIDANCE RECORD Select the ECO Guidance Records (2) on the Energy Saving Guidance menu screen, then press switch F6. On the ECO Guidance Records menu, display the frequency of display of the ECO guidance on a daily basis or during the split measurement period.
  • Page 122 EXPLANATION OF COMPONENTS OPERATION Operation on the Average Fuel Consumption Record screen Press switch F1, F2 or F5 on the Average Fuel Consumption Record screen to perform the following operations. F1: Clears the graph data. F2: Switches graphical displays of the average fuel consump- tion.
  • Page 123 OPERATION EXPLANATION OF COMPONENTS Deleting the average fuel consumption records When switch F1 (CLEAR) is pressed, the reconfirmation screen shown in the figure is displayed. When the switch F6 is pressed, graphs of data of the last 12 hours and the last 1 week are both deleted, and the screen returns to the Average Fuel Consumption Record screen.
  • Page 124 EXPLANATION OF COMPONENTS OPERATION SET DISPLAY OF FUEL CONSUMPTION GAUGE It is possible to change the display of fuel consumption gauge (5) and the setting of Display/Non-display. Select Average Fuel Consumption Display (6) from the Configurations screen, then press switch F6. On this screen, it is possible to perform the following oper- ations with switches F3 to F6.
  • Page 125 OPERATION EXPLANATION OF COMPONENTS REMARK When you select the split measurement, the measurement stop switch (STOP) is displayed on the Operation Records screen and the ECO Guidance Records screen. When you stop the measurement, move from Energy Saving Guidance menu (a) screen to the Operation Records (1) screen or ECO Guidance Records (2) screen, then press the measure- ment stop switch F1 (STOP).
  • Page 126 EXPLANATION OF COMPONENTS OPERATION Select the ECO Gauge Display (8) from the Configurations screen, then press switch F6. ECO Gauge Display setting screen appears. Traction: Displays drawbar pull gauge (A) on the standard screen. Fuel Consump: Displays ECO gauge (B) on the standard screen.
  • Page 127 OPERATION EXPLANATION OF COMPONENTS SWITCH DISPLAY/NON-DISPLAY OF ECO GUIDANCE It is possible to change the setting of Display/Non-display of ECO guidance (10). Select ECO Guidance Display (11) from the Configurations screen, then press switch F6. ECO Guidance Display setting screen appears. ON: Displays ECO Guidance (10) on the standard screen.
  • Page 128 EXPLANATION OF COMPONENTS OPERATION Select ECO Guidance Display at Key OFF (13) from the Configurations screen, then press switch F6. The setting screen for ECO Guidance Display at Key OFF screen appears. ON: Displays ECO Guidance (12) on the end screen. OFF: Does not display ECO Guidance (12) on the end screen.
  • Page 129 OPERATION EXPLANATION OF COMPONENTS REVERSE HYDRAULIC FAN NOTICE • After stopping the engine, check around the engine for sticking dry leaves or dirt. In particular, carefully check around the exhaust mani- fold and turbocharger for sticking dirt which can cause a fire. •...
  • Page 130 EXPLANATION OF COMPONENTS OPERATION If the parking brake lever or work equipment lock lever is in FREE position or the engine is running, the screen shown in the figure is displayed and the fan rotation is not re- versed. Press the switch F5 and the display returns to the previous screen.
  • Page 131 OPERATION EXPLANATION OF COMPONENTS 11. After finishing the work, press the switch F5 and stop the fan reverse rotation. 12. Turn the fuel control dial to Low idle (MIN) position. 13. Turn the starting switch key to OFF position, and stop the engine.
  • Page 132 EXPLANATION OF COMPONENTS OPERATION Select the set time on the “Auto Idle Stop Timer Setting” screen shown in the figure, and then press switch F6. On the “Auto Idle Stop Timer Setting” screen shown in the figure, you can perform the following operations with switches F3 to F6.
  • Page 133 OPERATION EXPLANATION OF COMPONENTS Select “Pre-lubrication Skip Mode” (1) on “Machine Set- ting” menu (b) screen, then press the switch F6. Press the switch F6 on “Pre-lubrication Skip Mode” screen, and the pre-lubrication function stops. The monitor screen returns to the user menu. If you do not use the pre-lubrication skip, press the switch F5 to return to the user menu screen.
  • Page 134 EXPLANATION OF COMPONENTS OPERATION AFTERTREATMENT DEVICES REGENERATION Each item of “Aftertreatment Devices Regeneration” menu (c) is to make settings for aftertreatment devices regeneration. MAINTENANCE SCREEN SETTING Each item of setting menu (e) on “Maintenance” screen is used for displaying and setting the notification relevant to mainte- nance.
  • Page 135 • If you want to change the setting for the maintenance time or maintenance notice time (initial setting: 30 hours), consult your Komatsu distributor. Operations on the “Maintenance Due Time Reset” screen On the “Maintenance” menu screen, if switch F6 is kept pressed for at least 1.5 seconds, the screen changes to the “Maintenance Due Time Reset”...
  • Page 136 EXPLANATION OF COMPONENTS OPERATION MONITOR SETTINGS Each item of “Monitor Setting”menu (f) is to make settings for the monitor. SCREEN ADJUSTMENT Use the “Screen Adjustment” menu to adjust brightness of the monitor screen. Select “Screen Adjustment” (1) on the “Monitor Setting” menu screen, then press switch F6.
  • Page 137 The guide lines indicate blade width lines and a line 5 m away from the rear of the machine. When changing the blade, ask your Komatsu distributor for adjustment of the camera screen. Select camera “Screen Adjustment (Camera)” on the “Monitor Setting”...
  • Page 138 EXPLANATION OF COMPONENTS OPERATION Use switches F2 to F6 to adjust brightness of the screen. F2: Resets an adjusted value to default value. F3: Moves the indicator to the left by one notch. F4: Moves the indicator to the right by one notch. F5: Cancels the change and returns the screen to “Screen Adjustment (Camera)”...
  • Page 139 OPERATION EXPLANATION OF COMPONENTS SET GUIDE LINE DISPLAY MODE Select the “Guide Line” on the “Screen Adjustment (Cam- era)” screen. Press switch F6. The “Guide Line” setting screen is displayed. • OFF: Guide lines (Outline (A), Center Line (B)) are not displayed.
  • Page 140 EXPLANATION OF COMPONENTS OPERATION The screen switches to the Clock Adjustment screen for selecting a menu. The following 5 items can be changed. (a): “GPS Synchronization” (b): “Calendar” (c): “Time” (d): “12h/24h Mode” (e): “Daylight Saving Time” REMARK • (b) Calendar and (c) Time need to be readjusted since they are reset after a long-term storage.
  • Page 141 OPERATION EXPLANATION OF COMPONENTS The “Calendar” screen is displayed. When year display (A) is highlighted in yellow, operate the switches as follows to change year display (A). If it is not necessary to change the year setting, press switch F6. F3: Calendar goes back 1 year.
  • Page 142 EXPLANATION OF COMPONENTS OPERATION The “Time” screen is displayed. When the hour display (D) is highlighted in yellow, operate the switches as follows to change hour display (D). If it is not necessary to change the hour setting, press switch F6. F3: The time goes back 1 hour.
  • Page 143 OPERATION EXPLANATION OF COMPONENTS Select “Daylight Saving Time” (e) on “Clock Adjustment” screen, then press switch F6. The “Daylight Saving Time” screen is displayed. F3: Moves to the next item (1 line below). Moves to the top line when on the bottom line. F4: Moves to the previous item (1 line above).
  • Page 144 The “Operator ID” menu is not displayed when the operator identification function is disabled. REMARK Contact your Komatsu distributor for details of the method of setting, changing, or cancelling the operator identi- fication function. WHEN OPERATOR IDENTIFICATION FUNCTION IS AVAILABLE WITH SKIP When the starting switch is ON and ID is inputted, the identified ID is displayed in the column of “Operator ID”...
  • Page 145 OPERATION EXPLANATION OF COMPONENTS • Input the already registered ID on the “Operator ID Change” screen and press F6. Then, the identified ID can be changed. A message is displayed below and the screen returns to the “Monitor Setting” menu screen. On the “Monitor Setting”...
  • Page 146 MESSAGE DISPLAY On machines equipped with KOMTRAX, you can see the mes- sages from your Komatsu distributor on this mail confirmation menu (g). When there is any message, the User Message at the left end of the standard screen lights up.
  • Page 147 When the message display lights up in blue (B), it means that no reply has been made yet to any read message to your Komatsu distributor. Please reply to the message ac- cording to the replying method mentioned below: •...

  • Page 148: Switches

    EXPLANATION OF COMPONENTS OPERATION REPLY TO MESSAGE Input the selected item number in the Numeric Input box (1) on the screen of mail confirmation menu (g). The selected item number is written in place (2) of the message text. • Input the number by using the machine monitor switch.
  • Page 149 OPERATION EXPLANATION OF COMPONENTS STARTING SWITCH Starting switch is used to start or stop the engine. (A): OFF position The key can be inserted or withdrawn. Switches for the electri- cal system (except room lamp) are all turned off, and the en- gine is stopped.
  • Page 150 EXPLANATION OF COMPONENTS OPERATION WIPER SWITCH The wiper switch operates the windshield wiper. The wiper switches are as follows. (LH) Left door (FF) Front window (RH) Right door (RR) Rear window (INT) Wiper intermittent operation switch REMARK If the wiper blade is locked for some reason, the wiper stops automatically.
  • Page 151 OPERATION EXPLANATION OF COMPONENTS REMARK When washer tank and window washer hoses are removed, connect them correctly according to their colors. (A) For left (blue) (B) For right (red) (C) For rear (black) (D) For front (colorless) (E) Washer tube (tank side) (F) Washer tube (cab side) (G) Left door (blue) (H) Right door (red)
  • Page 152 EXPLANATION OF COMPONENTS OPERATION HEAD LAMP SWITCH The headlamp switch is used to light up the head lamp and monitor illumination. (A) Night position Lamps light up and monitor illumination is set to night mode. (B) Day position Lamps light up and monitor illumination is set to day mode. (C) OFF position Lamps go out.
  • Page 153 OPERATION EXPLANATION OF COMPONENTS Use room lamp switch to light up the room lamp. ON position Lights up OFF position The room lamp lights up even when the starting switch is at OFF position. ENGINE EMERGENCY SHUT DOWN SWITCH (if equipped) By turning the engine emergency shut down switch to ON posi- tion (A), the engine stops in emergency.
  • Page 154 DOWNLOAD CONNECTOR FOR KOMTRAX Plus KOMTRAX-Plus data can be downloaded through the down- load connector for KOMTRAX-Plus. When using this connector, consult your Komatsu distributor. ADDITIONAL WORKING LAMP SWITCH (if equipped) The additional working lamp switch is used to turn on or off the additional working lamps.
  • Page 155 OPERATION EXPLANATION OF COMPONENTS (C) Access light ENGINE ROOM LIGHT SWITCH (if equipped) Engine room light is turned on with the engine room light switch. (A) Engine room light REVOLVING LAMP SWITCH (if equipped) 3-97...
  • Page 156 • Use the engine shutdown secondary switch only in an emergency. Immediately ask your Komatsu distributor for repair of the problem. • If this switch is set to the “STOP ENGINE” position by mistake while the machine is operating nor- mally, “Engine Shutdown Secondary SW In Operation”...
  • Page 157 OPERATION EXPLANATION OF COMPONENTS Raise cover (C) and open it. Turn the engine shutdown secondary switch to upper posi- tion (a) and the engine stops. (a) STOP ENGINE When abnormal (switch is set to upper position) (b) NORMAL When normal (switch is set to lower position) •...

  • Page 158: Control Levers And Pedals

    EXPLANATION OF COMPONENTS OPERATION CONTROL LEVERS AND PEDALS (1) Parking brake lever (5) Work equipment lock lever (2) Joystick (steering, directional and gear shift lever) (6) Blade control lever (3) Brake pedal (7) Ripper control lever (4) Decelerator pedal BLADE CONTROL LEVER The blade control lever is used to control the blade.
  • Page 159 OPERATION EXPLANATION OF COMPONENTS Tilting control (A) RIGHT tilt (B) Tilt LEFT Machine with dual tilt Press switch F1, and the dual tilt mode is selected. This mode is used for lifting, tilting, and pitching the blade. • While dual tilt mode pilot lamp (M) is lit, the machine is set in the dual tilt mode.
  • Page 160 EXPLANATION OF COMPONENTS OPERATION Tilting control (A) RIGHT tilt (B) Tilt LEFT REMARK • In the dual tilt mode, the blade is tilted more than in the single tilt mode. • The dual tilt operation can be done in RAISE, HOLD or LOWER position.
  • Page 161 OPERATION EXPLANATION OF COMPONENTS Blade operation in each mode Blade fine control mode. ON: Fine control performance is higher than when OFF. OFF: Normal mode BRAKE PEDAL WARNING Do not rest your foot on the pedal except when you oper- ate the pedal.
  • Page 162 EXPLANATION OF COMPONENTS OPERATION REMARK • When setting the parking brake lever to LOCK position, return the joystick (steering, directional and gear shift lever) to N (NEUTRAL) position. • When starting the engine, set the parking brake lever to LOCK position. When the parking brake lever is not in LOCK position, the limit switch operates, and the engine does not start.
  • Page 163 OPERATION EXPLANATION OF COMPONENTS When the lever is tilted forward, the machine travels forward. When the lever is tilted backward, the machine travel in re- verse. Steering operation Position (L): Left turn Position (R): Right turn When the lever is tilted halfway in the direction you are turning while it is tilted in the forward and reverse travel direction, the machine turns gradually.
  • Page 164 EXPLANATION OF COMPONENTS OPERATION DECELERATOR PEDAL WARNING • When passing over the top of a slope or when dump- ing soil from a cliff, the load on the machine will sud- denly be reduced and the travel speed will increase. In this case, depress the decelerator pedal to reduce the travel speed.

  • Page 165: Other Equipment

    OPERATION EXPLANATION OF COMPONENTS OTHER EQUIPMENT DUST INDICATOR This device notifies the operator of clogging of air cleaner ele- ment. DOOR OPEN LOCK Use the door lock to fix the door in position after opening it. Push the door against the door catch (1). The door is fixed to the catch.
  • Page 166 EXPLANATION OF COMPONENTS OPERATION SASH GLASS INTERMEDIATE LOCK When working with the cab sash glass open, use this lock to prevent the glass from chattering. • When the lever is in FREE position (F), the glass can be opened or closed. •...
  • Page 167 OPERATION EXPLANATION OF COMPONENTS POWER SUPPLY OUTLET 24V power supply When cigarette lighter is removed, the lighter socket can be used as a power source. The capacity of the cigarette lighter is 120 W (24 V x 5 A). NOTICE Do not use this as a power supply for 12 V equipment. This will cause failure of the equipment.
  • Page 168 EXPLANATION OF COMPONENTS OPERATION Fuse box (2) is installed to the overhead panel. Fuse capacities and circuit names Fuse box (1) Fuse ca- Name of circuit pacity 5 A Pedal brake switch 20 A Continuous power supply (cab) 20 A Continuous power supply (air conditioner) 20 A Horn power supply 5 A...
  • Page 169 OPERATION EXPLANATION OF COMPONENTS Fuse box (2) Fuse ca- Name of circuit pacity 10 A Radio/ Room lamp Spare 10 A Revolving lamp and rearview monitor 20 A Radio and cigarette lighter 10 A Front windshield wiper and rear windshield wiper 10 A R.H. and L.H. door wipers CIRCUIT BREAKER •...
  • Page 170 • Do not keep the reset button of the circuit breaker to be pressed. • If the starting motor does not operate even after the circuit breaker is restored, contact your Komatsu dis- tributor. REMARK The capacities of the circuit breakers (A) to (G) are as follows.
  • Page 171 OPERATION EXPLANATION OF COMPONENTS TOOL BOX Store the tools in it. Tool box is on the L.H. fender. FIRE EXTINGUISHER (if equipped) A fire extinguisher is provided at the rear left part inside the op- erator's cab. The directions are described on the nameplate affixed to the fire extinguisher.
  • Page 172 • After the starting switch has been turned off, the system operating lamp may stay lit for a long time. In such case, consult your Komatsu distributor. • The system operating lamp may look slightly luminous in the dark after it is turned off. It is due to the minute leakage of current and not an abnormal phenomenon.
  • Page 173 OPERATION EXPLANATION OF COMPONENTS HANDLE Komatsu Diesel Particulate Filter (KDPF) CAUTION • Exhaust gas temperature may increase higher than the previous models during Aftertreatment Devi- ces Regeneration and the high temperature may last after the completion of regeneration. Avoid getting near the exhaust pipe outlet and around the aftertreatment devices to prevent being burnt.
  • Page 174 EXPLANATION OF COMPONENTS OPERATION NOTICE Do not stop engine when the aftertreatment devices regen- eration is activated. When stopping the engine, stop the aftertreatment devices regeneration first according to “PROCEDURE FOR AFTER- TREATMENT DEVICES REGENERATION DISABLE SET- TING”, then keep engine running at low idle for approxi- mately 5 minutes, and stop engine.
  • Page 175 • Komatsu recommends using Komatsu genuine engine oil for KDPF. If engine oil other than Komatsu genuine oil for KDPF is used, it may shorten cleaning interval of KDPF fil- ters, adversely affect the engine such as deteriorated oil may reduce lubricating function, and it may cause failure.
  • Page 176 EXPLANATION OF COMPONENTS OPERATION When the degree of emergency is low • If KDPF soot accumulation caution lamp (2) lights up in yellow (action level (3):“L01”), screen (A) is displayed first. • The action level goes out 2 seconds after and the screen changes to standard screen (B).
  • Page 177 OPERATION EXPLANATION OF COMPONENTS PROCEDURE FOR MANUAL STATIONARY REGENERATION CAUTION Exhaust gas temperature may increase higher than the previous models during Aftertreatment Devices Regenera- tion. Avoid getting near the exhaust pipe outlet and around the aftertreatment device to prevent being burnt. Also, keep combustible materials away from the exhaust pipe outlet and around the aftertreatment device to prevent a fire.
  • Page 178 EXPLANATION OF COMPONENTS OPERATION REMARK After switch F6 is pressed in step 6, the screen shown in the figure may be displayed. This indicates that the opera- tions in steps 1 to 4 were not performed correctly or there is trouble other than KDPF soot accumulation abnormality. After checking that the engine is running normal, the park- ing brake lever and work equipment lock lever are in LOCK position (L) and the fuel control dial is set to Low...
  • Page 179 OPERATION EXPLANATION OF COMPONENTS This screen is displayed during the manual stationary re- generation. It may take more than 40 minutes to complete the manual stationary regeneration. Do not touch any switch on the screen or operate fuel control dial until the regeneration is completed and the standard screen ap- pears again.
  • Page 180 EXPLANATION OF COMPONENTS OPERATION NOTICE Even if the regeneration is disabled, KDPF soot accumula- tion caution lamp (1) lights up if soot is accumulated and the manual stationary regeneration is required. If KDPF soot accumulation caution lamp lights up, move the ma- chine to a safe place and perform manual stationary regen- eration.
  • Page 181 OPERATION EXPLANATION OF COMPONENTS REMARK • When the regeneration is disabled, the aftertreatment devi- ces regeneration disable pilot lamp (2) is lit on the stand- ard screen. • The setting of the regeneration disable is canceled by turn- ing starting switch to OFF position. When the automatic re- generation needs to be kept disabled, perform the above procedure each time you start the engine.
  • Page 182 EXPLANATION OF COMPONENTS OPERATION Select the regeneration disable, press switch F6, and the regeneration stops. REMARK The regeneration performed to protect the system may not be stopped, but this is not a failure. PROCEDURE FOR CANCEL OF AFTERTREATMENT DEVICES REGENERATION DISABLE SETTING CAUTION When canceling the regeneration disable, move the machine to a safe place and check that there is no...
  • Page 183 In other cases that Komatsu or Komatsu distributor judges that it is necessary to suspend KOMTRAX com- munication. If you do not observe the above rules, neither Komatsu nor your Komatsu distributor shall be held liable for any resulting impacts or damages.
  • Page 184 It can be useful for you to perform the machine management by yourself. Your Komatsu distributor uses the above ma- chine information for supply of service to the customers, improvement of our products and service, etc.

  • Page 185: Machine Operations And Controls

    Check carefully, and if any abnormality is found, repair it or contact your Komatsu distributor. • Do not get on or off the machine from the rear. Since the floor is slippery and not seen from the operator seat, it is dangerous to get on or off there.
  • Page 186 RORS”. 11. Check the seat belt and mounting hardware. Check the seat belt and mounting hardware for any abnormality. If any damage is found, ask your Komatsu distributor to replace it with new one. 12. Check and clean the camera (Machine with camera) When cleaning the camera, wipe off any dirt with soft cloth.
  • Page 187 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR CHECKING WATER SEPARATOR, DRAINING WATER AND SEDI- MENT WARNING • Immediately after the engine is stopped, all the parts are still very hot, and may cause burn injury. Wait for the temperature at all the parts to go down, and then start the work. •...
  • Page 188 MACHINE OPERATIONS AND CONTROLS OPERATION Set the machine in the posture shown below for checking the oil level, and stop the engine. Lower the blade (a) to the ground so that its back face is vertical. Lower the ripper (b) to the ground with the pin at the bot- tom so that the shank is vertical.
  • Page 189 OPERATION MACHINE OPERATIONS AND CONTROLS Check the oil level with the sight gauge (G) after approxi- mately 5 minutes. If the oil level is between H and L of the sight gauge (G), it is proper. If the level is below L level, add oil through the oil filler port (F).
  • Page 190 MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR CHECKING COOLANT LEVEL, ADDING COOLANT WARNING • Do not open the radiator cap (1) and pressure cap (6) unless necessary. When checking the coolant, check it with the reservoir tank when the engine is cold. •...
  • Page 191 After adding coolant, if the radiator coolant level monitor stays lit, coolant level sensor may have trouble. Ask your Komatsu distributor for repair. If the radiator coolant level monitor frequently lights up after adding coolant and the coolant level in the res- ervoir tank is at FULL or above FULL, the operation of pressure cap (6) may be defective.
  • Page 192 MACHINE OPERATIONS AND CONTROLS OPERATION Open the engine side cover on the left side of the ma- chine. Pull out the dipstick (G) and wipe the oil off with a cloth. Fully insert the dipstick (G) into the dipstick pipe again, then pull it out.
  • Page 193 OPERATION MACHINE OPERATIONS AND CONTROLS Pull out the dipstick (G) and wipe the oil off with a cloth. Fully insert the dipstick (G) into the dipstick pipe, then re- move it. Check if the oil is sticking up to between marks H and L of “COLD IDLE”...
  • Page 194 • If fuses are frequently blown or if there are traces of short-circuiting on the electrical wiring, promptly ask your Komatsu distributor to locate the cause of it and to perform the repair. • Keep the top surface of the battery clean and check the vent hole in the battery cap. If it is clogged with dirt or dust, wash the battery cap with water to clear the vent hole.
  • Page 195 OPERATION MACHINE OPERATIONS AND CONTROLS • Always check if there is any accumulation of combustible material around the battery, and remove such combustible material. METHOD FOR CHECKING FUEL LEVEL, ADDING FUEL WARNING When adding fuel, never spill the fuel or let it overflow. It may cause fire. If any fuel has spilled, wipe it up completely.
  • Page 196 If the lamps do not light up, a broken bulb or disconnected wire are the possible causes. Ask your Komatsu distributor for repairs. After finishing the check, turn the head lamp to OFF posi- tion (c) and turn the rear lamp to OFF position (e).
  • Page 197 MACHINE OPERATIONS AND CONTROLS Turn starting switch (1) to ON position (B). Check that KOMATSU mark is displayed first and then the camera screen and the basic monitor screen is displayed in order, and the buzzer sounds for approximately 2 sec- onds.
  • Page 198 MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR CHECKING BACKUP ALARM OPERATION STATUS Turn the starting switch to ON position (B). Set the parking brake lever to LOCK position (L). Set the joystick (steering, directional and gear shift lever) in REVERSE position (R). The buzzer must sound immediately.
  • Page 199 OPERATION MACHINE OPERATIONS AND CONTROLS AIR SUSPENSION SEAT METHOD FOR ADJUSTING SEAT IN FORE-AND-AFT DIRECTION Pull the lever (1) upward, and set the seat to the desired position. Fore-and-aft adjustment: 152.4 mm (12.7 mm x 12 stages) After adjusting, release the lever. METHOD FOR RECLINING SEAT The reclining of the seat becomes large when the seat is moved forward, and it becomes smaller as the seat is moved backward.
  • Page 200 MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR TILTING SEAT Pull up the tilt adjustment lever (3) and adjust the front an- gle of the seat cushion. • To raise the front of the seat, apply your weight to the rear of the seat, while pulling up lever. •...
  • Page 201 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR ADJUSTING SEAT CUSHION IN FORE-AFTER DIRECTION Operate the lever (5) upward, set the seat cushion to the de- sired position, then release the lever. Adjustment amount: 60 mm METHOD FOR ADJUSTING LUMBAR SUPPORT NOTICE Avoid operating the air lumbar support continuously for 1 minute or longer since such practice can damage the air compressor.
  • Page 202 MACHINE OPERATIONS AND CONTROLS OPERATION • To increase the damping force, turn the knob clockwise (a). • To decrease the damping force, turn the knob counter- clockwise (b). Amount of adjustment 1st stage: at position (c) 2nd stage: at position (d) 3rd stage: at position (e) 4th stage: at position (f) 5th stage: at position (g)
  • Page 203 OPERATION MACHINE OPERATIONS AND CONTROLS Set the seat heater and ventilation selector switch (8) to the position (a). Set the air flow control switch (9) to HIGH position (d) or LOW position (e). Air flow control switch (9) OFF position (c): The seat heater stops. HIGH position (d): The seat heater operates.
  • Page 204 MACHINE OPERATIONS AND CONTROLS OPERATION Pull up the headrest 80 mm or more. The headrest is pulled out. NOTICE When removing the headrest, operate it so that the shaft of the headrest becomes straight. If it is forcibly twisted, the installation part may be broken. METHOD FOR INSTALLING HEADREST Insert the headrest into the hole at the seat back.
  • Page 205 OPERATION MACHINE OPERATIONS AND CONTROLS Pull up lock lever (1) at the rear of case (2) on the left side of the operator's seat, and set it to FREE position (F). While pulling up lock lever (1) with one hand, hold the front part of case (2) with the other hand, and move in the for- ward and backward directions with both hands.
  • Page 206 MACHINE OPERATIONS AND CONTROLS OPERATION Steering control lever also moves together. Press the switch (1) to adjust the height. When adjusting the armrest only The L.H. armrest of the operator's seat can be adjusted in stepless up to 36 mm upward from the con- tact face of the armrest and case.
  • Page 207 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR FASTENING SEAT BELT Sit in the seat and depress the brake pedal fully. Under this condition, adjust the seat so that your back is fitted to the backrest. Hold grip (2) and pull out the belt from retractable device (1).
  • Page 208 MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR OPERATIONS AND CHECKS BEFORE STARTING ENGINE WARNING • When starting the engine, check and make sure park- ing brake lever (1) and work equipment lock lever (5) are secured in LOCK position. • When leaving the operator's seat, be sure to set park- ing brake lever (1) and work equipment lock lever (5) to the LOCK positions, whether the engine is running...
  • Page 209 OPERATION MACHINE OPERATIONS AND CONTROLS When joystick (steering, directional and gear shift lever) (2) is in FORWARD or REVERSE, the letter P on speed range display (A) will flash. When joystick (steering, directional and gear shift lever) (2) is not in N (neutral) position, the engine does not start. Check that blade control lever (3) is in HOLD position (b).
  • Page 210 If a password is set, the input display screen will be indi- cated on the monitor screen. REMARK Contact your Komatsu distributor for details of the method of setting, changing, or canceling the password. 10. Perform the following inspection on the machine monitor.

  • Page 211: Method For Starting Engine

    OPERATION MACHINE OPERATIONS AND CONTROLS • Speed range display section (17) • Multi-gauge (18) If the multi-gauge goes out and caution lamp stays lit, immediately check the lit item. For details of contents and check methods for caution lamp, see “WARNING DISPLAY”. 11.
  • Page 212 MACHINE OPERATIONS AND CONTROLS OPERATION NOTICE • Do not turn the starting motor continuously for 20 sec- onds or longer. If the engine does not start, wait for approximately 2 minutes, and then repeat the opera- tion from step 2. •...
  • Page 213 OPERATION MACHINE OPERATIONS AND CONTROLS Turn the starting switch key (2) to START position (C). The engine will start. When the engine starts, release the starting switch key (2). The key will return automatically to ON position (B). REMARK • White smoke may be discharged for a short time im- mediately after the engine is started or during the af- tertreatment devices regeneration in cold season, but...
  • Page 214 MACHINE OPERATIONS AND CONTROLS OPERATION NOTICE • Do not turn the starting motor continuously for 20 sec- onds or longer. If the engine does not start, wait for approximately 2 minutes, and then repeat the opera- tion from step 2. •...
  • Page 215 OPERATION MACHINE OPERATIONS AND CONTROLS Turn the starting switch key (2) to ON position (B). Check if the preheating pilot lamp on the monitor panel (3) is lit. If a password has been set, the input display screen will be indicated on the monitor screen, but the preheating pilot lamp operates in the same way as on the standard screen.
  • Page 216 MACHINE OPERATIONS AND CONTROLS OPERATION After the engine starts, wait for the engine oil pressure caution lamp to go out. Do not perform the work equipment operation or travel while the engine oil pressure caution lamp is lit. NOTICE If the engine oil pressure caution lamp does not go out in 4 to 5 seconds, stop the engine immedi- ately.
  • Page 217 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR STARTING MACHINE WITH PRE-LUBRICATION WARNING • Start the engine only while sitting on the operator's seat. • Do not attempt to start the engine by short-circuiting the engine starting circuit. Doing so may cause a serious personal injury or death or fire.
  • Page 218 MACHINE OPERATIONS AND CONTROLS OPERATION Turn the key in starting switch (4) to ON position (B). If the ambient temperature is low, the preheating pilot lamp lights up and automatic preheating is performed. Keep the key in starting switch (4) at ON position until the preheat- ing pilot lamp goes out.
  • Page 219 After the engine is started, move the machine to a safe place and ask your • Hydraulic switches are discon- Komatsu distributor for repair. “PE” flashes on the gear speed dis- nected. play and the engine cannot be start- Motor has a failure.

  • Page 220: Method For Operations And Checks After Starting Engine

    Check that there is no abnormal noise when the engine is idling or when the engine speed rises slightly. When there is an abnormal noise at the engine startup and if that condition continues, the engine may be dam- aged. In that case, ask your Komatsu distributor to check the engine as soon as possible. 3-162...
  • Page 221 In that case, ask your Komatsu distributor to check the engine as soon as possible.
  • Page 222 (A) to (C). Check for abnormal exhaust gas color, noise, or vibration. If any problem is found, contact your Komatsu distributor. If the engine coolant temperature gauge points the correct temperature range, the engine warm-up operation is completed.
  • Page 223 OPERATION MACHINE OPERATIONS AND CONTROLS After checking that the engine coolant temperature gauge points the correct temperature range, continue the warm-up operation of the hydraulic component. Method for canceling automatic warm-up operation NOTICE When you are forced to urgently cancel the automatic warm-up operation or to lower the engine speed to low idle, do as follows.
  • Page 224 (C) to (D): White range REMARK If the power train oil temperature is not sufficiently high, it takes longer to reach the maximum speed. Check for abnormal exhaust gas color, noise, or vibration. If any abnormality is found, contact your Komatsu distributor. 3-166...
  • Page 225 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR HYDRAULIC SYSTEM WARM-UP OPERATION WARNING • Before warming up the hydraulic component, check that there is no person or obstacle in the area around the machine, then sound the horn and start the opera- tion.
  • Page 226 MACHINE OPERATIONS AND CONTROLS OPERATION At the end, operate the blade control lever (3) and ripper control lever (4) to all directions, and actuate all cylinders several times. (a) RAISE (b) HOLD (c) LOWER (d) FLOAT (e) LEFT tilt (f) RIGHT tilt (g) INCREASE blade edge angle (h) DECREASE blade edge angle If the work equipment oil temperature is not high enough, the work equipment and steering may delay in...

  • Page 227: Method For Stopping Engine

    Fuel gauge (9): Is the indicator in green range? Check for abnormal exhaust gas color, noise, or vibration. If any problem is found, contact your Komatsu distributor. REMARK If the power train oil temperature is not sufficiently high, it takes longer to reach the maximum speed.
  • Page 228 MACHINE OPERATIONS AND CONTROLS OPERATION Turn the key in starting switch (2) to OFF position (A). The engine will stop. Remove the key from starting switch (2). REMARK • When the key in starting switch (2) is turned to OFF position, the engine stops but the power supply to the machine is not turned OFF immediately.

  • Page 229: Method For Starting Machine (Travel Forward And Reverse) And Stopping Machine

    OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR STARTING MACHINE (TRAVEL FORWARD AND REVERSE) AND STOPPING MACHINE METHOD FOR MOVING MACHINE WARNING • Check that the area around the machine is safe, and sound the horn before starting the machine. • Keep people away from the machine.
  • Page 230 MACHINE OPERATIONS AND CONTROLS OPERATION Set blade control lever (3) to RAISE (a) position and raise the blade to 40 to 50 cm above the ground. Set ripper control lever (4) to RAISE (a) position and raise the ripper to the upper limit. Turn fuel control dial (5) to High idle (MAX) position and in- crease the engine speed.

  • Page 231: Shift Gears

    OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR STOPPING MACHINE WARNING • Avoid a sudden stop. Stop the machine gradually. • Do not park the machine on a slope. If it is unavoida- bly necessary to park the machine on a slope, place parking brake lever (1) in LOCK position and insert blocks underneath the track shoes to prevent the ma- chine from moving.
  • Page 232 MACHINE OPERATIONS AND CONTROLS OPERATION Move joystick (steering, directional and gear shift lever) (1) to the desired speed range to shift gears. METHOD FOR SHIFTING GEARS Shift the gear by pressing switches (a) and (b). Up switch (a): The gear is shifted up by 1 step each time this switch is pressed.
  • Page 233 OPERATION MACHINE OPERATIONS AND CONTROLS Shoe slip control mode (if equipped) Mode for ripping work The shoe slipping is restrained automatically during the ripping work, as a result, the de- celerator pedal operation can be reduced. Restraining the shoe slipping contributes to improve the service life of the undercarriage and to reduce the fuel consumption.
  • Page 234 MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR SWITCHING SHOE SLIP CONTROL ROCK-BED SELECTION MODE (only for the machine equipped with shoe-slip control) Switch the shoe slip control rock-bed selection mode in customize mode. Press the customize switch (1). Press the switches F3 and F4, and select “Shoe Slip Con- trol Mode”, and press the switch F6.
  • Page 235 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR PRESET SETTING WITH SHIFT SWITCH OPERATION IN NEU- TRAL Preset (gear speed when machine moves off) and maximum gear speed when traveling (automatic gear shift mode only) are set by operating the shift switch when the transmission is in NEUTRAL. Automatic gear shift mode Set the preset (gear speed when machine moves off) and max- imum gear speed when traveling.
  • Page 236 MACHINE OPERATIONS AND CONTROLS OPERATION You can select a shift mode by pressing UP switch (a) or DOWN switch (b) while the joystick (steering, directional and gear shift lever) is in N (NEUTRAL) position. • F1-R1 mode • F1-R2 mode •...
  • Page 237 OPERATION MACHINE OPERATIONS AND CONTROLS Automatic gear shift mode Changing the maximum gear speed while the machine is trav- eling • During forward travel: The maximum gear speed can be set to F1 to F3. • During reverse travel: The maximum gear speed can be set to R1 to R3.
  • Page 238 MACHINE OPERATIONS AND CONTROLS OPERATION Manual gear shift mode Changing the gear speed used while the machine is traveling • During forward travel: The gear speed used can be set to F1 to F3. • During reverse travel: The gear speed used can be set to R1 to R3.

  • Page 239: Method For Switching Between Forward And Reverse

    OPERATION MACHINE OPERATIONS AND CONTROLS Shoe slip control mode Changing the gear speed used while the machine is traveling • During forward travel: The gear speed used can be set to F1 to F3. • During reverse travel: The gear speed used can be set to R1 to R3.

  • Page 240: Method For Steering Machine

    MACHINE OPERATIONS AND CONTROLS OPERATION Depress decelerator pedal (1) to decrease the engine speed, and stop the machine. Set joystick (steering, directional and gear shift lever) (2) to a desired position. Release decelerator pedal (1) gradually, and increase the engine speed to start the machine. REMARK •...
  • Page 241 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR TURNING THE MACHINE WHILE TRAVELING FORWARD Tilt the joystick (steering, directional and gear shift lever) for- ward and tilt it to the left side (L) halfway, and the steering clutch is disengaged and the machine gradually turns to the left.

  • Page 242: Recommended Working Modes For Works

    MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR TURNING THE MACHINE GRADUALLY WHILE TRAVELING FOR- WARD Tilt the joystick (steering, directional and gear shift lever) (1) forward and tilt it to the left side (L) halfway, and the machine gradually turns to the left. REMARK When gradually turning to the right, tilt the joystick (steering, di- rectional and gear shift lever) forward and tilt it to right halfway.
  • Page 243 OPERATION MACHINE OPERATIONS AND CONTROLS OPERATING MODE P mode (power mode) and E mode (economy mode) are provided as operating mode. Select the mode to match the use. When the starting switch is turned to ON position, the mode used for the previous operation is selected by default.
  • Page 244 MACHINE OPERATIONS AND CONTROLS OPERATION AUTOMATIC SHIFT MODE Mode for general dozing work When the load increases, the gear speed is shifted down automatically, and when the load decreases, it is shifted up automatically to the maximum gear speed which has been set. If the ripping work is performed in this mode, the setting is automatically changed to that of the manual shift mode.
  • Page 245 OPERATION MACHINE OPERATIONS AND CONTROLS REMARK • If the ripping work is performed with the automatic shift mode, the torque converter lockup mechanism is enabled or disabled repeatedly. Use the manual shift mode or the shoe slip control mode for normal ripping work. •...
  • Page 246 MACHINE OPERATIONS AND CONTROLS OPERATION • Removing operation of stumps • Side cutting operation • Large boulder digging up operation SHOE SLIP CONTROL MODE (if equipped) This is the mode for ripping work. The shoe slip control function works only when the gear speed is F1. 3-188...
  • Page 247 OPERATION MACHINE OPERATIONS AND CONTROLS • It is suitable for the work which requires many ripping work. • The shoe slip is restrained automatically during the ripping work, as a result, the decelerator pedal operation can be reduced. Restraining the shoe slip contributes to improve the service life of the undercarriage and to reduce the fuel consumption.
  • Page 248 MACHINE OPERATIONS AND CONTROLS OPERATION • During ripping operation of hard rock, if the rear of ma- chine is lifted up and severe shoe slip occurs, operate the ripper control lever to LOWER (c), and the engine speed is lowered and the shoe slip decreases. OTHER MODES REVERSE SLOW MODE •...

  • Page 249: Precautions For Operation

    OPERATION MACHINE OPERATIONS AND CONTROLS When traveling downhill, if you feel that the travel speed is too fast, turn on the reverse slow mode. Reverse travel speed becomes slow. RECOMMENDED WORKING MODES Select the mode according to the type of work and requirements by referring to the following table. Gear shift mode Operating mode Soil condi-...

  • Page 250: Precautions When Operating On Slope

    MACHINE OPERATIONS AND CONTROLS OPERATION PERMISSIBLE WATER DEPTH In water, use the machine only in the depth range where the track frame top is above the water surface. If the cooling fan enters water, it may be broken. In particular, take care that the machine does not pitch forward.

  • Page 251: Precautions For Using Brake

    OPERATION MACHINE OPERATIONS AND CONTROLS When working on slopes with an angle of 20 ° or more, if the fuel level on the fuel gauge enters the red range, add fuel im- mediately. (A): Red range (B): Green range Pay attention to oil level. When operating the machine on a slope of 20 °...

  • Page 252: Precautions For Blind Spots Caused By Cab And Rops Structures

    MACHINE OPERATIONS AND CONTROLS OPERATION PRECAUTIONS FOR BLIND SPOTS CAUSED BY CAB AND ROPS STRUC- TURES WARNING The cab stays create blind spots. When operating, check carefully that there is no person or obstacle in the surrounding area. RECOMMENDED APPLICATIONS In addition to the following, it is possible to further increase the range of applications by using various attach- ments.
  • Page 253 OPERATION MACHINE OPERATIONS AND CONTROLS WORKS OF CUTTING INTO HARD OR FROZEN GROUND OR DITCH For digging and ditch excavation of hard or frozen ground, tilt the blade. Even hard ground can be dug effectively by a tilted or angled blade. If the ground is harder, use a ripper attachment for better effi- ciency.

  • Page 254: Effective Use Of Ripper

    MACHINE OPERATIONS AND CONTROLS OPERATION EFFECTIVE USE OF RIPPER • The optimum digging angle for the shank is when the shank is tilted back for approximately 5 ° to the ground (rip- ping angle: 45 to 50 °). • The ripper can dig rocks even if the shank is tilted out (rip- per point tip angle is large), if they are relatively soft (elas- tic wave 1500 m/s or less).
  • Page 255 OPERATION MACHINE OPERATIONS AND CONTROLS Slope: Face of bank, etc. METHOD FOR OPERATING PIN PULLER (only machine equipped with giant ripper) Stop the machine on a safe place. Lower the shank to the ground. Operate the pin puller switch to PULL position (1) and pull out the installation pin.

  • Page 256: Operating Method For Ripping Work

    MACHINE OPERATIONS AND CONTROLS OPERATION Operate the pin puller switch and insert the installation pin. If the shank hole position does not match to the pin, turn the pin puller switch to PUSH position (2) and move the ripper up and down slowly. REMARK When raising the pin position and digging deep, use the long protector to prevent wear of the shank.
  • Page 257 OPERATION MACHINE OPERATIONS AND CONTROLS REMARK • If the ripper is applied while the rear of the machine is raised from the ground, length of track on ground (A) decreases. Accordingly, the drawbar pull decreases and the ripping efficiency lowers. •...
  • Page 258 MACHINE OPERATIONS AND CONTROLS OPERATION REMARK If the multi-shank ripper is installed, rip at right angle to the slope face. (B): Tilt back (MAX) (1): Face of slope (2): Root cutting Cross ripping • On the jobsites with hard rock-bed, if large rocks or bould- ers are not broken and dug up by one ripping path, apply the second ripping path at right angle to the first ripping di- rection.
  • Page 259 OPERATION MACHINE OPERATIONS AND CONTROLS Operate the ripper control lever to tilt the ripper, and break and dig up the boulder. If you cannot break and dig up the boulder by tilting opera- tion, tilt back the shank while traveling forward a little, and then dig up by tilting operation.

  • Page 260: Method For Adjusting Work Equipment

    MACHINE OPERATIONS AND CONTROLS OPERATION • If the machine is steered during ripping, the shank may be broken. Before steering, pull the shank out of the ground. • Never travel the machine in reverse while ripper point (1) is in the rock-bed. The pin mounting point (1) will break and point (1) will fall off.
  • Page 261 OPERATION MACHINE OPERATIONS AND CONTROLS Turn the brace (1) by using the rod handle (2) installed to the brace on the left side. The blade can be tilted up to 1400 mm at the left side and 950 mm at the right side by changing the length (ℓ) of the brace.
  • Page 262 MACHINE OPERATIONS AND CONTROLS OPERATION Remove shim (1) and tighten bolt (2). Tighten until the play in the ball joint is eliminated. Measure clearance (A) and remove bolt (2). Adjust thickness of shim (1) to (A) +0 to 1 mm. Tighten bolt (2). Check that the ball moves smoothly while the bolt is tight- ened.

  • Page 263: Tips For Longer Undercarriage Life

    OPERATION METHOD • Use a track shoe suitable for soil condition. For selection of the shoe, consult your Komatsu distributor. • Do not let the shoe slip during operation. If the shoe starts slipping, decrease the load to prevent slipping.
  • Page 264 OPERATION The following items for inspection will serve as a guide to maintenance service of each undercarriage part. Per- form the periodical inspection and contact your Komatsu distributor when the machine has approached the re- pairable limits. METHOD FOR MEASURE GROUSER HEIGHT Eliminate the sag of the track, and measure at the center of the track.

  • Page 265: Method For Parking Machine

    OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR PARKING MACHINE WARNING • Avoid a sudden stop. Stop the machine gradually. • Park the machine on a firm and level place. Do not park the machine on a slope. If you have to park on a slope, set parking brake lever (4) to LOCK position, block the track, and thrust the work equipment into the ground to prevent movement of the machine.

  • Page 266: Method For Checking After Finishing Work

    MACHINE OPERATIONS AND CONTROLS OPERATION Set blade control lever (5) to LOWER (c) position and low- er the blade to the ground. Return blade control lever (5) to HOLD position. Set ripper control lever (6) to LOWER (c) position and low- er the ripper to the ground.

  • Page 267: Lock

    OPERATION MACHINE OPERATIONS AND CONTROLS Remove any mud affixed to the undercarriage. LOCK The following sections are lockable to prevent vandalism. Places where can be locked with the starting switch key (1) R.H. and L.H. engine side covers (2 places on left side, 2 places on right side) (2) Battery inspection cover (3) Cab door opener (1 place on left side, 1 place on right side)
  • Page 268 MACHINE OPERATIONS AND CONTROLS OPERATION Turn the key counterclockwise. Align the rotor groove with match mark (2) of the cap. Turn the cap slowly. If a “click” is heard, the cap is unlocked and can be re- moved. PROCEDURE FOR CLOSING CAP WITH LOCK Screw in the cap until it becomes tight, then insert the key into the key slot.
  • Page 269 OPERATION MACHINE OPERATIONS AND CONTROLS • Cab door opener Position (A): OPEN (UNLOCK) Position (B): CLOSE (LOCK) • R.H. and L.H. engine side covers, battery inspection cover, hydraulic tank oil filler cap, radiator water filler port cover, cab left side cover, water separator inspec- tion cover, hydraulic tank oil level inspection cover, en- gine nameplate inspection cover, damper dipstick pipe cover...

  • Page 270: Handle Air Conditioner

    If any abnormality is detected in any equipment or sensor used on the air conditioner, the air conditioner system caution lamp lights up on the monitor screen. If the air conditioner system caution lamp lights up, ask your Komatsu distributor for inspection and repair. Ventilation •...

  • Page 271: Explanation Of Air Conditioner Equipment

    OPERATION HANDLE AIR CONDITIONER EXPLANATION OF AIR CONDITIONER EQUIPMENT (1) Sunlight sensor (6) Vent selector switch (2) Display monitor (7) FRESH/RECIRC air selector switch (3) Auto switch (8) Fan switch (4) Air conditioner switch (9) Temperature control switch (5) OFF switch OFF SWITCH This switch is used for stopping the fan and air conditioner.
  • Page 272 HANDLE AIR CONDITIONER OPERATION Monitor display and air flow Monitor display Air flow rate Air flow "low" Air flow "medium 1" Air flow "medium 2" Air flow "medium 3" Air flow "medium 4" Air flow "high" TEMPERATURE SET SWITCH Use the temperature set switch to adjust the temperature inside the cab.
  • Page 273 OPERATION HANDLE AIR CONDITIONER (A1): Face vent (right and left 1 place) (A2): Rear vent (2 places) (A3): Front vent (2 place) (B): Foot vent (2 place) (C1): Door glass vent (right and left 1 places) (C2): Front window glass vent (1 place) Air blows out from the vents marked with ○.
  • Page 274 HANDLE AIR CONDITIONER OPERATION AUTO SWITCH Use the auto switch for automatic selection of the air flow, vents, and air source (FRESH/RECIRC) according to the set temperature. • Press this switch, then use temperature control switch (1) to set the temperature, and run the air conditioner under automatic control.

  • Page 275: Method For Operating Air Conditioner

    OPERATION HANDLE AIR CONDITIONER When OFF switch (1) is pressed, the display of temperature setting (a) and air flow (b) goes out, and operation stops. AIR CONDITIONER SWITCH Use air conditioner switch for turning the air conditioner (cool- ing, dry heating) ON or OFF. •...
  • Page 276 HANDLE AIR CONDITIONER OPERATION Set temperature (a) and air flow (b) are displayed. Use temperature control switch (2) to set to the desired temperature. The air flow, combination of vents, and selection of fresh or recirculated air is automatically selected according to the set temperature, and the air conditioner is operated auto- matically to provide the set temperature.
  • Page 277 OPERATION HANDLE AIR CONDITIONER METHOD FOR MANUAL OPERATION Press fan switch (1) and adjust the air flow. When doing this, check that temperature setting (a) and air flow (b) are displayed on the monitor. Turn air conditioner switch (2) ON. Use temperature control switch (3) to set to the desired temperature.
  • Page 278 HANDLE AIR CONDITIONER OPERATION Press vent selector switch (4) and select the desired vents. When this is done, the display for vent (c) of the monitor changes according to the selection. Press FRESH/RECIRC selector switch (5) and select recir- culation of the air inside the cab (RECIRC) or intake of fresh air from outside (FRESH).
  • Page 279 OPERATION HANDLE AIR CONDITIONER METHOD FOR OPERATING WITH COLD AIR TO FACE AND WARM AIR TO FEET To operate with cold air blowing to the face and warm air blow- ing to the feet, set as follows. Press fan switch (1) and adjust the air flow. When doing this, check that temperature setting (a) and air flow (b) are displayed on the monitor.
  • Page 280 HANDLE AIR CONDITIONER OPERATION Turn air conditioner switch (2) ON. Adjust fan switch (1), temperature control switch (3) and FRESH/RECIRC selector switch (5) to the desired posi- tions. 3-222...
  • Page 281 OPERATION HANDLE AIR CONDITIONER METHOD FOR OPERATING DEFROSTER Press fan switch (1) and adjust the air flow. When doing this, check that temperature setting (a) and air flow (b) are displayed on the monitor. Press vent selector switch and set vent display on the dis- play monitor to (f) or (g) as shown in the figure.
  • Page 282 HANDLE AIR CONDITIONER OPERATION Press FRESH/RECIRC selector switch (5) and set it to FRESH mode. Press temperature control switch (1) and set temperature on the monitor to 32.0 of maximum heating. When operating in the rainy season or when it is desired to remove the mist from the window glass or to dehumidify the air, turn air conditioner switch (2) ON.

  • Page 283: Handle Radio

    OPERATION HANDLE RADIO HANDLE RADIO • To ensure safety, always keep the volume to a level where you can hear the outside sounds during opera- tion. • If water gets into the speaker case or radio, it may lead to failure. Take care not to let water get on them. •...
  • Page 284 HANDLE RADIO OPERATION DISPLAY SELECTOR BUTTON Use the display selector button to change frequency and clock shown on the display. Each time you press this button, frequency, clock and band are shown on the display in this order. If 1.5 seconds passes while a band is shown, a frequency will be displayed. As long as AUX is selected, this button alternately switches the display between AUX and the clock.

  • Page 285: Method For Controlling Radio

    OPERATION HANDLE RADIO Open cap (a). Connect a portable audio equipment by using an commer- cially available audio cable. Press the band/AUX selector button and select AUX. METHOD FOR CONTROLLING RADIO METHOD FOR ADJUSTING FREQUENCY Press band/AUX selector button (1) and select FM or AM. Press tuning/time adjustment button (2) to adjust the fre- quency.
  • Page 286 HANDLE RADIO OPERATION METHOD FOR CALLING PRESET Press band/AUX selector button (1) and select FM or AM. Press one of 1 to 6 of preset button (2). The frequency registered in the preset number of the pressed button is called up and received. “Example”...
  • Page 287 OPERATION HANDLE RADIO METHOD FOR ADJUSTING HIGH REGISTER RANGE (TREBLE) Press sound control button (1) to light up “TRE” on the dis- play. You can adjust the high register range (treble) of the sound. Press tuning/time adjustment button (2) to adjust the high register range (treble).

  • Page 288: Antenna

    HANDLE RADIO OPERATION ANTENNA NOTICE When transporting the machine or when parking it in a ga- rage, direct the antenna down and make sure that it does not contact anything. 3-230...

  • Page 289: Transportation

    Note that the machine “SPECIFICATIONS” (weight and dimensions) vary depending on the kind of track shoes, blade, or other equipment. REMOVE CAB If you need to remove the cab for the transportation, consult your Komatsu distributor. LOADING AND UNLOADING WITH TRAILER WARNING •...
  • Page 290 TRANSPORTATION OPERATION Apply the brake of the trailer securely. Set chocks (1) to the wheels to secure the trailer. Set distance (3) between ramps (2) to match the distance between the right and left tracks, and keep angle (4) to a maximum of 15 °.
  • Page 291 OPERATION TRANSPORTATION Set the parking brake lever securely to LOCK position (L). Stop the engine, then remove the key from the starting switch. Secure the machine with chains or wire ropes of suitable strength by method (A) or (B) to prevent the machine from moving during transportation.
  • Page 292 TRANSPORTATION OPERATION Fix the front side of the machine by installing a shackle to the undercover hook and using wire ropes as shown in Fig. (a). Fix the rear side of the machine by installing wire ropes to the ripper mounting pin as shown in Fig. (b). PROCEDURES FOR UNLOADING MACHINE Unload on a firm and level ground.

  • Page 293: Method For Lifting Machine

    This method of lifting applies to the standard specification machine. The method of lifting differs depending on the attachments and options installed. For the procedure for machines that are not the standard specification, consult your Komatsu distribu- tor. When lifting the machine, stop the machine on a level place, and perform the following procedure.
  • Page 294 TRANSPORTATION OPERATION Set the work equipment lock lever securely to LOCK posi- tion (L). Install wire ropes and slings matching to the weight of the machine as shown in the figure. NOTICE • Put the protectors, etc. to the sharp corners and the portions where the wire ropes are caught to prevent breakage of the wire ropes.

  • Page 295: Cold Weather Operation

    When handling the cooling water containing coolant that has been drained during changing the coolant or repair of radiator, contact your Komatsu distributor or request a qualified company to perform the operation. Coolant is toxic, so never pour it into drainage ditches or drain it onto the ground surface.

  • Page 296: Precautions After Daily Work Completion

    COLD WEATHER OPERATION OPERATION 1.24 1.25 1.26 1.27 1.23 1.24 1.25 1.26 • When the ambient temperature is low, the capacity of the battery considerably drops. Cover it, or remove it from the machine to place it in the warm place. Restore it again before the operation. •...

  • Page 297: Precautions For Long-Term Storage

    STARTING MACHINE AFTER LONG-TERM STORAGE NOTICE If the machine has been stored without performing the monthly rust-prevention operation, consult your Komatsu distributor before using it. When using the machine after long-term storage, perform the following items before using it. •...

  • Page 298: Troubles And Actions

    If the engine stops or the oil pressure in the brake circuit lowers because of a trouble in the hydraulic sys- tem, the brake works and the machine cannot move. To move the machine in this case, the oil pressure in the brake circuit must be heightened to the specified level with a special device. Contact your Komatsu dis- tributor.
  • Page 299 OPERATION TROUBLES AND ACTIONS • Moving a machine by towing is only used to move it to a place where it is possible to perform inspection and maintenance. Do not tow it a long distance. • If it is impossible to operate the steering and brakes of the machine being towed, do not let anyone ride on the machine.

  • Page 300: Precautions For Discharged Battery

    TROUBLES AND ACTIONS OPERATION PRECAUTIONS FOR DISCHARGED BATTERY WARNING • It is dangerous to charge a battery when installed on a machine. Make sure that it is removed before charg- ing. • When checking or handling the battery, stop the en- gine and turn the starting switch and battery discon- nect switch keys to OFF positions.
  • Page 301 OPERATION TROUBLES AND ACTIONS Turn the battery disconnect switch to OFF position (O). When disconnecting the battery cables, first remove the ground cable (normally connected to the negative (-) terminal). If any tool touches between the positive (+) terminal and the chassis, there is a hazard of sparks being gen- erated.
  • Page 302 TROUBLES AND ACTIONS OPERATION PRECAUTIONS FOR CHARGING BATTERY WARNING When charging the battery, if the battery is not handled correctly, it is dangerous that the battery may explode. Al- ways follow the instruction manual accompanying the charger, and observe the following. •...
  • Page 303 OPERATION TROUBLES AND ACTIONS START ENGINE WITH JUMPER CABLES WARNING • When connecting the cables, never contact the posi- tive (+) and negative (-) terminals. • Always wear protective eyeglasses and rubber gloves when starting the engine by using the jumper cable. •...

  • Page 304: Other Trouble

    PHENOMENA AND ACTIONS FOR ELECTRICAL SYSTEM • For the remedies indicated with (*) in the remedy column, always contact your Komatsu distributor. • In cases of problems or causes which are not listed below, ask your Komatsu distributor for repairs. Problem Main causes Remedy...
  • Page 305 PHENOMENA AND ACTIONS FOR CHASSIS • Contact your Komatsu distributor for the remedies indicated with (*) in the remedy column. • In cases of problems or causes which are not listed below, ask your Komatsu distributor for repairs. Problem Main causes Remedy Torque converter oil pressure is low.
  • Page 306 TROUBLES AND ACTIONS OPERATION Problem Main causes Remedy Torque converter overheats. Clogged radiator Clean, wash radiator core. Check and repair fan motor hydraulic Fan speed is low. circuit. (*) Engine coolant temperature is high. See section of engine. Clogged oil cooler Clean or replace.
  • Page 307 PHENOMENA AND ACTIONS FOR ENGINE RELATED PARTS • Contact your Komatsu distributor for the remedies indicated with (*) in the remedy column. • In cases of problems or causes which are not listed below, ask your Komatsu distributor for repairs. Problem Main causes Remedy...
  • Page 308 TROUBLES AND ACTIONS OPERATION Problem Main causes Remedy Engine coolant temperature caution Engine coolant is insufficient, coolant Check, add coolant, repair by refer- lamp lights up. leaks. ring to CHECKS BEFORE START- ING. Fan speed is low. Check and repair fan motor hydraulic circuit.
  • Page 309 (3) for the point of contact is displayed in the message column at the bottom of the screen. REMARK If no point of contact telephone number is registered, no tele- phone number is displayed. Ask your Komatsu distributor for the telephone number regis- tration if necessary. 3-251...

  • Page 311: Maintenance

    MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section.

  • Page 312: Precautions For Maintenance

    Komatsu recommends using Komatsu genuine parts specified in Parts Book as replacement parts. KOMATSU GENUINE LUBRICANTS For lubrication of the machine, Komatsu recommends using Komatsu genuine lubricants. Moreover use oil of the specified viscosity according to the ambient temperature. ALWAYS USE CLEAN WASHER FLUID Use automobile window washer fluid, and be careful not to let any dirt get into it.

  • Page 313: Avoid Mixing Oil

    MAINTENANCE PRECAUTIONS FOR MAINTENANCE • Clean the radiator fins and other parts of the heat exchange equipment more frequently, and take care not to let the fins become clogged. • Replace the fuel filter more frequently. • Clean electrical components, especially the starting motor and alternator, to avoid accumulation of dust. •...

  • Page 314: Fuel And Lubricants To Match The Ambient Temperature

    PRECAUTIONS FOR MAINTENANCE MAINTENANCE • Check if the inspected and serviced area is normally operated. FUEL AND LUBRICANTS TO MATCH THE AMBIENT TEMPERATURE It is necessary to select fuel or lubricant according to the ambient temperature.

  • Page 315: Outline Of Maintenance

    Oil remaining in the piping and cylinders may be mixed in. NOTICE Komatsu recommends using Komatsu genuine engine oil for KDPF. If engine oil other than Komatsu genuine oil for KDPF is used, it may shorten cleaning interval of KDPF filters, adversely affect the en- gine such as deteriorated oil may reduce lubricating function, and it may cause failure, shortening of the machine life, lowering of performance and increase of fuel consumption.
  • Page 316 The ASTM diesel fuel recommended by Komatsu may contain 5 % or less of biofuel. The EN diesel fuel may contain 7 % or less of it. Use the fuel which is filled into the storage tank or the fuel tank of the machine as soon as possible.
  • Page 317 Perform sampling at regular fixed intervals. • Do not perform sampling on rainy or windy days when water or dust can get into the oil. For further details of KOWA, contact your Komatsu distributor. STORE OIL AND FUEL • Keep oil and fuel indoors to prevent any water, dirt, or other impurities from getting in.

  • Page 318: Handle Electrical Components

    Komatsu recommends installing electric components specified by Komatsu. • External electro-magnetic interference may cause malfunction of the control system controller. Accordingly, consult your Komatsu distributor before installing a radio receiver or other wireless equipment to the ma- chine. • When working at the seashore, keep the electrical component clean to prevent corrosion.
  • Page 319 MAINTENANCE OUTLINE OF MAINTENANCE • When the high-pressure hoses, etc. are disconnected, check the O-rings for damage. If they are damaged, replace them. • When the hydraulic oil filter element or strainer is replaced or cleaned, or when a hydraulic component is repaired, replaced, or its piping is removed, air in the circuit must be bled.

  • Page 320: Standard Tightening Torque For Bolts And Nuts

    Unless otherwise specified, tighten the metric nuts and bolts to the torque shown in the table below. If it is necessary to replace any nut or bolt, Komatsu recom- mends using Komatsu genuine part of the same size as the part that is removed.
  • Page 321 MAINTENANCE STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS Tighten the hoses by the following torque shown in the table. Taper seal Tightening torque Width Nominal Thread across No. of size “a” Target value Allowable range flats “b” hose (mm) (mm)  Nm  kgm  Nm...

  • Page 322: Maintenance Schedule

    MAINTENANCE SCHEDULE MAINTENANCE MAINTENANCE SCHEDULE If the currently used diesel fuel which does not include the bio-fuel is changed to the one mixed with the bio-fuel, the replacement interval of the fuel filter is changed as well. See “MAINTENANCE INTERVAL WHEN DIESEL FUEL MIXED WITH BIO-FUEL IS USED”.

  • Page 323: Maintenance Interval When Diesel Fuel Mixed With Bio-Fuel Is Used

    MAINTENANCE MAINTENANCE SCHEDULE METHOD FOR CHECKING AND CLEANING FUEL STRAINER ............4-63 METHOD FOR CLEANING STEERING CASE BREATHER ..............4-63 METHOD FOR CHEKING OIL LEVEL IN RECOIL SPRING AND ASSIST CYLINDER CASE, ADDING OIL ................................4-64 METHOD FOR CHECKING ALL TIGHTENING POINTS OF ENGINE INTAKE PIPE CLAMPS....4-64 METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT ..........
  • Page 324 MAINTENANCE SCHEDULE MAINTENANCE After that, replace it within 1000 hours as a periodic replacement by the service meter reading. Maintenance interval after the diesel fuel has been changed to the diesel fuel mixed with bio-fuel Operating hours of the machine Service meter Every 500 hours Every 1000 hours...

  • Page 325: Maintenance Procedure

    MAINTENANCE MAINTENANCE PROCEDURE MAINTENANCE PROCEDURE INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS) Perform the following maintenance work only after the first 250 hours of operation on new machines. • Replace transmission filter element and torque converter filter element •...
  • Page 326 MAINTENANCE PROCEDURE MAINTENANCE Check the dust indicator (1). If the inside yellow piston of dust indicator (1) laps over the peripheral red zone (A), clean the air cleaner element. After cleaning, press the reset button to reset. METHOD FOR CLEANING OUTER ELEMENT NOTICE Before and after cleaning the element, do not leave or keep it under direct sunlight.
  • Page 327 MAINTENANCE MAINTENANCE PROCEDURE Wipe off or brush off the dirt stuck to the inside of the air cleaner body (6) and cover (3). Blow dry compressed air (Max. 0.2 MPa{2.1 kg/cm }) from the inside of the outer element along the pleats. Blow along the pleats from the outside, then blow again from the inside.
  • Page 328 MAINTENANCE PROCEDURE MAINTENANCE NOTICE When inserting the element into the body, if the rubber at the tip is swollen or the outer element (4) is not pushed in straight, and cover (3) is installed by force with hook (2), there is a danger that the hook and air cleaner body may be damaged, so be careful when installing.
  • Page 329 MAINTENANCE MAINTENANCE PROCEDURE Hold the outer element (4), rock it lightly up and down and to the right and left, and pull the element out. NOTICE Do not use a screwdriver or other tool. Wipe off or brush off the dirt stuck to the inside of the air cleaner body (6) and cover (3).

  • Page 330: Method For Cleaning Inside Of Cooling System

    NAC) has excellent anti-corrosion, antifreeze and cooling properties and can be used continuously for 2 years or 4000 hours. Komatsu recommends the use of Non-Amine Engine Coolant (AF-NAC). If you use another coolant, it may cause serious problems, such as corrosion of the engine and aluminum parts of the cooling system.
  • Page 331 When handling the cooling water containing coolant that has been drained during changing the coolant or repairing the radiator, contact your Komatsu distributor or request a qualified company to perform the operation. Coolant is toxic, so never pour it into drainage ditches or drain it onto the ground surface.
  • Page 332 MAINTENANCE PROCEDURE MAINTENANCE Place the containers to catch the mixed water with coolant under the drain valve (4) at the bottom of the radiator and under the drain valve (5) at the bottom of the oil cooler. Open the drain valves (4) and (5) to drain the coolant. Remove the cover (6) before opening the drain valve (5).

  • Page 333: Method For Checking And Adjusting Track Tension

    Never loosen any part other than the plug (4). Do not turn your face toward the direction that the grease fitting is in- stalled. If the track tension cannot be loosened by the above pro- cedure, ask your Komatsu distributor for repair. METHOD FOR INCREASING TRACK TENSION NOTICE •...
  • Page 334 WARNING Separating the track may be very dangerous. Before separating the track, perform the adjustment shown in “METHOD FOR DECREASING TRACK TENSION”. If the track shoe is still not loosened after this adjustment, ask your Komatsu distributor for repair. 4-24...

  • Page 335: Method For Checking Looseness And Tightening Track Shoe Bolts

    MAINTENANCE MAINTENANCE PROCEDURE METHOD FOR CHECKING LOOSENESS AND TIGHTENING TRACK SHOE BOLTS If shoe bolts (1) are used while they are loose, they are broken. Tighten them immediately whenever you find they are loose. METHOD FOR RETIGHTENING SHOE BOLT Tighten the shoe bolts in the order shown in the figure. Tightening torque for shoe bolt: 1235 to 1509 Nm {126 to 154 kgm} Check that the nut and shoe are in close contact with the...
  • Page 336 MAINTENANCE PROCEDURE MAINTENANCE Wear standards (Standard) Item Criteria Standard di- Measuring point Repair limit mension Height of end bit (out- 495 mm 340 mm side) Width of end bit 740 mm 600 mm Height of end bit (in- 395 mm 335 mm side) 335 mm Height of cutting edge 406 mm 264  mm for inver- ted one...

  • Page 337: Method For Cleaning And Checking Radiator Fin, Oil Cooler Fin, And Aftercooler Fin

    MAINTENANCE MAINTENANCE PROCEDURE Loosen the nut (1) and remove the bolt (2). Remove the cutting edge and end bit. Clean the mounting face. Invert the cutting edge and end bit, and install them, or re- place with new ones. If the bolt (1) and nut (2) are damaged, replace them as well.
  • Page 338 MAINTENANCE PROCEDURE MAINTENANCE NOTICE • Check that the soil and sand, etc. are not accumulated around the hydraulic drive fan. If there is any accumulation, remove it. • When the hydraulic drive fan rotates in reverse, take extreme care of scattering dust. •...
  • Page 339 MAINTENANCE MAINTENANCE PROCEDURE CLEAN WITH COMPRESSED AIR WARNING • If compressed air, high-pressure water, or steam hits your body directly or dirt is scattered by the compressed air, high-pressure water, or steam, there is a danger of personal injury. Always wear protective equipment such as protective eyeglasses and dust mask.
  • Page 340 MAINTENANCE PROCEDURE MAINTENANCE Install the fan fixing bracket (4) and lock the fan against ro- tation. REMARK • When installing the fan fixing bracket (4), adjust the fan position by using the tool such as a construction wrench. • The fan fixing bracket (4) is prepared in the radiator guard.
  • Page 341 MAINTENANCE MAINTENANCE PROCEDURE Remove the hose clamps (8), (9) and (10). Remove the mounting bolts (11) and (12) of fan support, and pull out the fan. 10. Fix the fan support with the open lock bar (13). 11. Blow off mud, dirt, leaves, etc. in the radiator fins with com- pressed air.
  • Page 342 MAINTENANCE PROCEDURE MAINTENANCE 13. After blowing off the dirt, close the fan and tighten the bolts (11) and (12). Tightening torque: 455 to 565 Nm {46.5 to 58 kgm}  After installing the fan, check the clearance between the fan blade and shroud. If it is out of specified dimension, adjust it so that (a) = 4 to 8 mm.

  • Page 343: Check And Clean Air Conditioner Condenser Intake Port

    MAINTENANCE MAINTENANCE PROCEDURE Perform the following check. Check the rubber hoses. If they are cracked or fragile, replace them. Check the hose clamps for looseness. CHECK AND CLEAN AIR CONDITIONER CONDENSER INTAKE PORT When the air intake part of the air conditioner condenser is clogged, clean and check it. Blow off mud, dirt, leaves, etc.

  • Page 344: Method For Cleaning Fuel Tank Breather

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR CLEANING FUEL TANK BREATHER If the breather is found dirty at inspection or maintenance, clean it. Remove nut (2) of breather assembly (1) on the top of the fuel tank. Remove cover (3). Remove dirt sticking to breather element (4). Clean in clean diesel fuel or flushing oil.

  • Page 345: Method For Checking Undercarriage Oil

    Loosen the seal bolt (1) slowly. REMARK One each of seal bolt (1) is installed inside and outside of the carrier roller. Remove the seal bolt (1). If no oil oozes, the oil level is low. Ask your Komatsu dis- tributor for repair. 4-35...

  • Page 346: Method For Replacing Door Damper

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR REPLACING DOOR DAMPER Measure groove depth (A) of door damper rubber (1). When groove depth (A) decreases to 2 mm or less, replace the damper. The damper is installed at top and bottom, 2 pieces each on the R.H.

  • Page 347: Method For Checking Window Washer Fluid Level, Adding Fluid

    MAINTENANCE MAINTENANCE PROCEDURE Measure wear (A) of the door lock striker. If wear (A) is 0.5 mm or more, replace the door lock striker. If you use it as it is, its play increases and can cause breakage of the hinge and lock door. METHOD FOR CHECKING WINDOW WASHER FLUID LEVEL, ADDING FLUID Perform this check when the window washer fluid does not come out.

  • Page 348: Method For Checking And Maintenance Air Conditioner

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR REPLACING FRONT WIPER The blade is hooked on portion (A). Move it in the direction of the arrow. Remove the blade. Install a new blade by hooking it on portion (A). Check that the it is hooked securely. METHOD FOR REPLACING REAR WIPER Remove E-ring (1).

  • Page 349: Method For Cleaning Air Conditioner Air Filters (Fresh/Recirc)

    REMARK When there are bubbles, the refrigerant gas is insufficient. In this case, ask your Komatsu distributor to add re- frigerant. If the air conditioner is run with the refrigerant gas level low, it will cause damage to the compressor.

  • Page 350: Method For Bleeding Air From Hydraulic Circuit

    MAINTENANCE PROCEDURE MAINTENANCE Loosen knob (1) at the rear left of the machine. Remove upper cover (2). Remove fresh air filter cover (3). Remove fresh air filter (4). Remove knob (5) at the rear left in the cab, and remove bracket (6) from part (a).
  • Page 351 MAINTENANCE MAINTENANCE PROCEDURE METHOD FOR BLEEDING AIR FROM SUCTION PIPING Prepare a container to catch the oil. Remove the cover (1) beside the L.H. side cover. Start the engine and run it at low idle. Install a hose of proper size to the air bleeder (2). Prepare a container to catch the oil at the hose end.

  • Page 352: Method For Releasing Pressure In Hydraulic Circuit

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR RELEASING PRESSURE IN HYDRAULIC CIRCUIT WARNING • The hydraulic system is always under internal pressure. Before checking or replacing the pipes and hoses, release the pressure from the circuit. If the internal pressure has not been released, the high pressurized oil may spout out and it may cause serious personal injury or death.
  • Page 353 MAINTENANCE MAINTENANCE PROCEDURE Turn the starting switch key to OFF position (A). Check that the supply valve (1) of the fuel tank is open. (S): CLOSE (O): OPEN Tilt the fuel feed pump switch (3) to ON position (a). (a): ON (b): OFF The lamp (4) flashes and the fuel feed pump operates.

  • Page 354: Method For Lubricating

    MAINTENANCE PROCEDURE MAINTENANCE After the fuel feed pump stops automatically (the lamp goes out), turn the fuel feed pump switch (3) to ON position again. Check that the lamp (4) has gone out. Start the engine. If the engine does not start, start the engine again according to the following procedure. Tilt the fuel feed pump switch (3) to ON position.

  • Page 355: Method For Checking Electrical Intake Air Heater

    (A) Front of the machine METHOD FOR CHECKING ELECTRICAL INTAKE AIR HEATER Check before starting in the cold weather (once a year). Ask your Komatsu distributor for check of the electrical intake air heater. METHOD FOR CHECKING AND REPLACING RADIATOR CAP AND PRESSURE WARNING Immediately after the engine is stopped, the coolant is still hot and the pressure is accumulated in the radiator.

  • Page 356: Checks Before Starting

    If the minimum clearance (L) is 0 mm and the ripper point contacts the point fixing pin, replace the ripper shank. Ask your Komatsu distributor for replacement of the ripper shank. REMARK When assembling the new ripper shank and the ripper point, default value of the clearance is 3.1 mm.

  • Page 357: Every 250 Hours Maintenance

    MAINTENANCE MAINTENANCE PROCEDURE • METHOD FOR CHECKING COOLANT LEVEL, ADDING COOLANT • METHOD FOR CHECKING OIL LEVEL IN ENGINE OIL PAN, ADDING OIL • METHOD FOR CHECKING OIL LEVEL IN POWER TRAIN CASE AND ADDING OIL • METHOD FOR CHECKING DUST INDICATOR •...

  • Page 358: Method For Checking Oil Level In Damper Case And Adding Oil

    MAINTENANCE PROCEDURE MAINTENANCE (11) Suspension (equalizer bar shaft) (2 places) (12) Suspension (equalizer bar center shaft) (1 place) Perform the lubrication to the suspension (equalizer bar center shaft) through the grease fittings shown by arrow. Operate the lubrication lever back and forth 3 to 5 times. After greasing, wipe off any old grease that is pushed out.
  • Page 359 If the purified water is added to above UPPER LEVEL (U.L.) line, remove the fluid by using a syringe to lower the level to UPPER LEVEL (U.L.) line. Neutralize the removed electrolyte with baking soda (sodium bicarbon- ate), then flush it away with a large amount of water. If necessary, consult your Komatsu distributor or a battery manufacturer.

  • Page 360: Method For Checking Brake Performance

    If it is possible to use an indicator to check the electrolyte level, follow the instructions given. METHOD FOR CHECKING BRAKE PERFORMANCE WARNING If the machine moves off during the following operation, ask your Komatsu distributor for repairs imme- diately. NOTICE •...

  • Page 361: Every 500 Hours Maintenance

    Take care not to deform the stopper pin in the drain valve (2) by loosening the valve too much. Tightening torque drain plug (1): 68.6±9.8 Nm  {7±1 kgm}  Tightening torque of drain valve (2): 63.7±14.7 Nm  {6.5±1.5 kgm}  Check the drained oil. If it contains much metallic powder or foreign material, contact your Komatsu distrib- utor. 4-51...
  • Page 362 MAINTENANCE PROCEDURE MAINTENANCE Tighten the drain valve (2). Turn the full-flow filter cartridge (3) counterclockwise by us- ing the filter wrench, and remove it. Clean the filter head, fill the new filter cartridge with engine oil, coat the threaded part and packing surface of the new filter cartridge with engine oil (or apply thin film of grease), then install it to the filter head.

  • Page 363: Method For Replacing Fuel Prefilter Cartridge

    The common rail fuel injection system used on this machine consists of more precise parts than those in the conventional injection pump and nozzles. If any cartridge other than a Komatsu genu- ine filter cartridge is used, dust or dirt may get in and cause problems with the injection system.

  • Page 364: Method For Replacing Transmission Filter Element And Torque Converter Filter Element

    MAINTENANCE PROCEDURE MAINTENANCE Clean the filter head, fill the new filter cartridge with clean fuel, thinly apply oil to the packing surface, then install it to the filter head. NOTICE • When filling the filter cartridge with fuel, do not re- move the cap (B) at center.

  • Page 365: Method For Checking And Replacing Alternator And Air Conditioner Compressor Drive Belt

    MAINTENANCE MAINTENANCE PROCEDURE Remove the cover (A) on the R.H. fender. (B): Transmission oil filter (C): Torque converter oil filter Remove the bolts (1) of transmission oil filter (B) and tor- que converter oil filter (C). Pull up the cover (2) and remove the element (3). Clean the inside of the case and the removed parts, then install the new element.

  • Page 366: Method For Replacing Air Conditioner Fresh/Recirc Filters

    MAINTENANCE PROCEDURE MAINTENANCE • When horizontal scratch (1) crosses vertical scratch (2) • When there are tears (3) in part of the belt In case (4) where there are horizontal scratches only, there is no need to replace the belt. METHOD FOR REPLACING ALTERNATOR AND AIR CONDITIONER COMPRES- SOR DRIVE BELT Loosen locknut (2) of push bolt (1), then screw in push bolt...

  • Page 367: Every 1000 Hours Maintenance

    MAINTENANCE MAINTENANCE PROCEDURE Remove fresh air filter covers (3), and remove fresh air fil- ters (4). Remove soil and sand from the sealing surface of fresh air filter covers (3) and inside of the filter cases. Install new fresh air filters (4). REMARK One of fresh air filters (4) is thin (S), and the other is thick (L).

  • Page 368: Method For Changing Oil In Power Train Case And Cleaning Strainer

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR CHANGING OIL IN POWER TRAIN CASE AND CLEANING STRAINER WARNING • Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn in- jury. Accordingly, wait until they have cooled down before starting the work. •...
  • Page 369 MAINTENANCE MAINTENANCE PROCEDURE Loosen the bolt (9) and separate the strainer (7) from mag- net (8). Tightening torque of bolt (9)46 to 59 Nm {4.7 to 5.9 kgm}  Remove all dirt from strainer and wash it in clean diesel fuel or flushing oil. Clean the case interior and plugs as well.

  • Page 370: Method For Replacing Fuel Main Filter Cartridge

    The common rail fuel injection system used on this machine consists of more precise parts than those in the conventional injection pump and nozzles. If any cartridge other than a Komatsu genu- ine filter cartridge is used, dust or dirt may get in and cause problems with the injection system.
  • Page 371 MAINTENANCE MAINTENANCE PROCEDURE Place a container to catch fuel under the filter cartridge (3). Turn the filter cartridge (3) counterclockwise by using the filter wrench, and remove it. Clean the filter head. Thinly apply oil to the packing of the new filter cartridge.

  • Page 372: Method For Replacing Fuel Tank Breather Element

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR REPLACING FUEL TANK BREATHER ELEMENT Remove nut (2) of breather assembly (1) on the top of the fuel tank. Remove cover (3). Replace breather element (4) with a new one. Install cover (3) and nut (2). METHOD FOR REPLACING PILOT FILTER ELEMENT WARNING Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn injury.

  • Page 373: Method For Checking And Cleaning Fuel Strainer

    MAINTENANCE MAINTENANCE PROCEDURE Place a container to catch the drained oil under the filter element. Check that the hydraulic oil temperature is low. Turn the filter cartridge counterclockwise to remove it. Clean the filter head, fill the new filter cartridge with hy- draulic oil, coat the threaded part and packing surface of the new filter cartridge with engine oil (or apply thin film of grease), then install it to the filter head.

  • Page 374: Method For Checking All Tightening Points Of Engine Intake Pipe Clamps

    If the oil level is low, add oil. METHOD FOR CHECKING ALL TIGHTENING POINTS OF ENGINE INTAKE PIPE CLAMPS Ask your Komatsu distributor for checking the tightening of the clamps between the air cleaner - turbocharger - aftercooler - engine. METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT WARNING •...

  • Page 375: Method For Checking Drive Belt Tension Pulley Assembly For Alternator And Air Conditioner Compressor

    METHOD FOR CHECKING DRIVE BELT TENSION PULLEY ASSEMBLY FOR AL- TERNATOR AND AIR CONDITIONER COMPRESSOR METHOD OF CHECKING Check the pulley for play and grease leakage. If any abnormality is found, ask your Komatsu distributor for re- pair or replacement. 4-65...

  • Page 376: Every 2000 Hours Maintenance

    If any loose bolt is found, tighten to a torque of 1520 to 1912 Nm {155 to 195 kgm} . If any damaged bolt is found, replace the bolt with a genuine Komatsu bolt. EVERY 2000 HOURS MAINTENANCE Maintenance for every 250, 500, and 1000 hours services should be performed out at the same time.
  • Page 377 MAINTENANCE MAINTENANCE PROCEDURE Remove the bolts (1) (2 pieces) on the front side of the machine. While holding down the cover, gradually remove the bolts (2) (2 pieces) on the rear side of the machine. Lower the cover gradually, and remove it. (A): Front of the machine Remove the breather (4) on upper side of the dumper.

  • Page 378: Method For Changing Oil In Final Drive Case

    MAINTENANCE PROCEDURE MAINTENANCE Check that the oil is between the H and L marks on the dipstick by referring to “METHOD FOR CHECKING OIL LEVEL IN DAMPER CASE AND ADDING OIL”. Close the inspection cover. METHOD FOR CHANGING OIL IN FINAL DRIVE CASE WARNING •...

  • Page 379: Method For Changing Oil In Hydraulic Tank, Replacing Hydraulic Oil Filter Element, And Cleaning Hydraulic Tank Strainer

    MAINTENANCE MAINTENANCE PROCEDURE METHOD FOR CHANGING OIL IN HYDRAULIC TANK, REPLACING HYDRAULIC OIL FILTER ELEMENT, AND CLEANING HYDRAULIC TANK STRAINER WARNING • Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in- jury.
  • Page 380 MAINTENANCE PROCEDURE MAINTENANCE Loosen the cover (3) mounting bolts (4 pieces). Remove the cover (3). At this time, the cover may jump out under the force of spring (4), so hold the cover down when removing the bolts. 10. Remove the spring (4) and valve (5). 11.

  • Page 381: Method For Checking And Adding Pivot Bearing Oil

    MAINTENANCE MAINTENANCE PROCEDURE 23. Check the oil level with the sight gauge (G) after approxi- mately 5 minutes. If the oil level is between H and L of the sight gauge (G), it is proper. 24. Install the cap. 25. After draining the oil, bleed the air from the hydraulic cir- cuit.

  • Page 382: Method For Checking And Releasing Nitrogen Gas Charge Pressure In Accumula- Tor (For Control Circuit)

    • Do not hit or roll it, or subject it to any impact. • When disposing of it, the gas must be released. Ask your Komatsu distributor to have this work per- formed. NOTICE If the nitrogen gas charge pressure in the accumulator is low and operations are continued, it becomes impossible to release the remaining pressure inside the hydraulic circuit if a failure occurs on the ma- chine.
  • Page 383 MAINTENANCE MAINTENANCE PROCEDURE Set the parking brake lever to LOCK position (L). Raise the work equipment (blade) to the upper limit. Perform the procedure 4 to 6 within 15 seconds. Since the accumulator pressure decreases gradually after the engine stops, you can release only just after the engine stops.

  • Page 384: Method For Checking Alternator

    If the work equipment does not go down or stops in midway, the charged pressure of the gas in the accumulator for the hydraulic circuit has probably dropped. Ask your Komatsu distributor for inspection. After completion of the inspection, set the work equipment lock lever to LOCK position and turn the starting switch to OFF position.

  • Page 385: Method For Checking And Adjusting Engine Valve Clearance

    MAINTENANCE MAINTENANCE PROCEDURE METHOD FOR CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE Special tools are necessary for inspection and maintenance. Ask your Komatsu distributor to perform this work. METHOD FOR REPLACING KCCV FILTER ELEMENT WARNING After the engine has been operated, all of parts are still very hot. Do not replace the filter element imme- diately.
  • Page 386 MAINTENANCE PROCEDURE MAINTENANCE By using the special wrench, loosen ring (3) of KCCV ven- tilator (1). After ring (3) comes off, remove case (4) from body (2) and remove element (5). Oil may be accumulated in or sticking to the case and ele- ment.

  • Page 387: Every 4000 Hours Maintenance

    MAINTENANCE MAINTENANCE PROCEDURE Align the position of ◇ mark (8) on the case with that of ◇ mark (11) of the filter body label, then install the case to the filter body. The element can be installed only when its teeth (12) and case's teeth (13) are correctly inserted in grooves (14) of the filter body.

  • Page 388: Method For Checking Water Pump

    Do not perform drilling, welding or flame-cutting. • Do not hit or roll it, or subject it to any impact. • When disposing of it, the gas must be released. Ask your Komatsu distributor to have this work per- formed. 4-78...

  • Page 389: Method For Checking For Looseness Of Engine High-Pressure Piping Clamp, Hard- Ening Of Rubber

    Check the clamps (1) to (20) visually and with your fingers that there are no loose bolts or hardening of the rub- ber. If there is any problem, the related parts must be replaced. Ask your Komatsu distributor for replacement. NOTICE If the engine operation is continued while any bolt is loosened or any rubber is hardened or removed, the contact portions of the high-pressure piping may be worn and may be broken by vibration.

  • Page 390: Method For Checking Main Frame And Work Equipment (Blade And Ripper)

    Check the fuel spray prevention caps (1) to (5) visually and and with your fingers that there are no missing fuel spray prevention cap, loose bolts or hardening of the rubber. If there is any problem, the related parts must be replaced. Ask your Komatsu distributor for replacement. METHOD FOR CHECKING MAIN FRAME AND WORK EQUIPMENT (BLADE AND RIPPER) Check after the first 4000 hours, and every 1000 hours after that.
  • Page 391 Carefully check the base material of the steel casting and weld- ing at portions (A) to (L), and check that there is no damage. If any cracks or other damage is found, repair them. Consult your Komatsu distributor for details of the repair proce- dure. 4-81...

  • Page 392: Method For Changing Coolant, Checking And Replacing Radiator Cap And Pressure Cap

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR CHANGING COOLANT, CHECKING AND REPLACING RADIATOR CAP AND PRESSURE CAP WARNING • Immediately after the engine is stopped, the coolant is still hot and the pressure is accumulated in the radiator. You may get burn injury if you remove the cap in this state. Always wait for the temper- ature to go down, turn the cap slowly to release the pressure, then remove the cap with care.

  • Page 393: Every 4500 Hours Maintenance

    Check visually and touch by hand to check that there are no missing fuel spray prevention cap, loose bolts or hardening of the rubber. If there is any problem, the related parts must be replaced. Ask your Komatsu distributor for replacement. EVERY 8000 HOURS MAINTENANCE Maintenance for every 250, 500, 1000, 2000, and 4000 hours services should be performed out at the same time.

  • Page 395: Specifications

    SPECIFICATIONS...

  • Page 396: Specifications : D375A-8

    SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS : D375A-8 D375A-8 Item Unit Semi- U tiltdozer Reinforced full- U tiltdozer Operating weight (excluding operator)  kg 74080 (*1) 75320 (*2) Blade unit weight  kg 10710 12490 (including cylinder and hydraulic oil) Ripper unit weight  kg...

  • Page 397: Attachments And Options

    ATTACHMENTS AND OP- TIONS Please read and make sure that you understand the SAFETY section before reading this section.

  • Page 398: General Precautions

    GENERAL PRECAUTIONS PRECAUTIONS FOR SAFETY If attachments or options other than those authorized by Komatsu are installed, this will not only affect the life of the machine, but will also cause problems with safety. When installing attachments not listed in this Operation and Maintenance Manual, contact your Komatsu distrib- utor first.

  • Page 399: Attachments And Options

    ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS TRACK SHOES SELECTION Select the appropriate track shoe to match the operating conditions. Track shoe selection If wider shoes than necessary are used, the load on the shoe will increase. It may cause problems such as bending of the shoe, cracking of the link, damage of the pin, and looseness of the shoe bolts.

  • Page 400: Selection Procedure Of Ripper Point

    SELECTION PROCEDURE OF RIPPER POINT ATTACHMENTS AND OPTIONS SELECTION PROCEDURE OF RIPPER POINT Procedure (1) Install standard point B (Less than 70%) Does rock have high Procedure (2) Is wear fast ? Install point E quartz contents ? (Check wear) (Whole point is worn evenly) (Only type of point is worn) (Over 70%)

  • Page 401: Handle External Power Supply Engine Preheater

    ATTACHMENTS AND OPTIONS HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEAT- External power supply engine preheater is an auxiliary engine starting aid which is used when the engine start- ing is difficult due to cold weather in which the ambient temperature drops under -20 °C or even when it is higher than -20 °C .

  • Page 402: Fabricate External Power Supply Cable

    HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER ATTACHMENTS AND OPTIONS Name Necessary condition • It is a single-phased AC current. Supply source (electrical feeder line) • Voltage is 200 to 240 V. The ground cable must be grounded. • Ground cable (Note. 2) The ground bar, etc.
  • Page 403 ATTACHMENTS AND OPTIONS HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER The plug (5) has the contacts (6) (3 pieces), and each contact has a symbol. Connect the terminal (8) to the contacts (6) with corresponding symbols. Connect the terminal (8) to the contacts (6) by screwing. Tightening torque: 1.2 Nm {0.12 kgm} (5) Plug body (17A-06-23320) (10) Core wire...

  • Page 404: Install External Power Supply System

    HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER ATTACHMENTS AND OPTIONS Modify the other end of the cable so that it can be connected to the external power supply system. Fabrication of the external power supply cable is completed when the modification for the connection is fin- ished.
  • Page 405 ATTACHMENTS AND OPTIONS HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER System diagram of external power supply engine preheater (as a reference for the work) (1) Power train oil pan heater (600 W/230 V) (6) Plug (2) Engine oil pan heater (600 W/230 V) x 2 (7) External power source input cable (3) Coolant heater (1500 W/230 V) (8) Power source cable...

  • Page 406: Method For Starting Engine In Cold Weather

    HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER ATTACHMENTS AND OPTIONS General wiring diagram of external power supply engine preheater (as a refer- ence for the work) (1) Water proof fuse (4) Connect to the external power supply (230 V) (2) Fusible link (5) Oil pan heater (600 W/230 V) (3) Ground (6) Block heater (1500 W/230 V)
  • Page 407 ATTACHMENTS AND OPTIONS HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER Operation procedure WARNING • Be sure to lower the work equipment to the ground. • Be sure to remove the oil and fuel if they are attached to the preheater body and around it. •...
  • Page 408 HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER ATTACHMENTS AND OPTIONS The input side receptacle on the machine is installed inside the side cover on the left side of the ma- chine. (1) External power source input cable (2) Power supply Start distributing the power with the power supply switch of the power supply system (main switch) or the switch for distributing the power if equipped.

  • Page 409: Method For Using Dual Tilt Dozer Effectively

    ATTACHMENTS AND OPTIONS METHOD FOR USING DUAL TILT DOZER EFFECTIVELY METHOD FOR USING DUAL TILT DOZER EFFECTIVELY BLADE STATE SINGLE TILT Switch the Single/Dual tilt selector switch to the Single, and perform the tilting operation. Applicable work • Normal operation DUAL TILT Switch the Single/Dual tilt selector button to the Dual, and per- form the tilting operation.

  • Page 410: Dozing Work

    METHOD FOR USING DUAL TILT DOZER EFFECTIVELY ATTACHMENTS AND OPTIONS FORWARD PITCH Keep the pitch button pushed in and operate the right tilt. Applicable operation • Digging natural ground and bed-rock (digging hard soil) • Pushing soil over cliffs • Pushing-up soil (Reduces spillage of soil over the top sur- face of the blade, and reduces amount of soil carried back) DOZING WORK...
  • Page 411 ATTACHMENTS AND OPTIONS METHOD FOR USING DUAL TILT DOZER EFFECTIVELY REMARK When digging is performed by rearward pitch, a sudden stick- ing in the ground will not occur and smooth digging can be per- formed. HARD SOIL CONDITION (HARD CLAY SOIL, SHALE STRATUM, ETC.) When digging is performed by forward pitch, the machine body is raised and the end bit sticks much better to the ground when the blade is tilted.
  • Page 412 METHOD FOR USING DUAL TILT DOZER EFFECTIVELY ATTACHMENTS AND OPTIONS Perform carrying (B) by rearward pitch (2). If soil falls over the blade top, do it by straight pitch (1). Perform dumping (C) by forward pitch (3). Soil can be dumped well and less soil will remain on the blade after dumping. LEVELING OPERATION (SPREADING) Perform the work by rearward pitch.
  • Page 413 ATTACHMENTS AND OPTIONS METHOD FOR USING DUAL TILT DOZER EFFECTIVELY SIDE-CUTTING OPERATION Use the rearward pitch and perform the digging by putting the tip of the end bit toward the rockface. REMARK If tilt amount is increased with the dual tilt, the side cutting of higher wall can be performed.

  • Page 414: Handle Hydraulic Type Ladder

    HANDLE HYDRAULIC TYPE LADDER ATTACHMENTS AND OPTIONS HANDLE HYDRAULIC TYPE LADDER METHOD FOR OPERATING HYDRAULIC TYPE LADDER WARNING Before operating the ladder, check that there is no one within the ladder operating range. If the ladder touches or catches someone in its moving parts, the person will suffer injury. NOTICE If the ladder is at activation position, the machine cannot perform travel.
  • Page 415 ATTACHMENTS AND OPTIONS HANDLE HYDRAULIC TYPE LADDER The hydraulic type ladder can be operated with the switch box (1) at the side of cab or the switch box (2) at rear of R.H. fender. NOTICE Check that the travel lock lever and the work equip- ment lock lever are in LOCK position.

  • Page 416: Actions If Machine Does Not Move By Failure

    Use this method for moving the machine temporarily to a safe place. After moving the machine to a safe place, immediately ask your Komatsu distributor for repair. Check that the parking brake lever is in LOCK position (L).

  • Page 417: When Required

    Start the engine and check that the travel operation and the work equipment operation are possible. If the operations are not possible, other causes of failure are suspected, so ask your Komatsu distributor to perform inspection. REMARK The action level L03 is displayed on the monitor, however, the machine can travel by setting the travel speed to the 1st and running the engine at medium speed.

  • Page 418: Every 1000 Hours Maintenance

    Look at the sight gauge (G) and check if the oil surface can be seen. If the oil surface cannot be seen, add the Komatsu genu- ine power train oil TO10 through the oil filler port (F). EVERY 1000 HOURS MAINTENANCE...

  • Page 419: Every 4000 Hours Maintenance

    Take the drain hose (2) out of the machine. Place a container to catch the oil. Loosen the drain valve (3) and drain the oil. Refill the power unit with Komatsu genuine power train oil TO10 through the oil filler port (F). 6-23...

  • Page 420: Machine With Mining Specification

    MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE PRECAUTIONS WHEN GETTING ON OR OFF MACHINE USE HANDRAILS AND STEPS WHEN GETTING ON OR OFF MACHINE Use the handrails and steps indicated by the arrow (A) in the figure when getting on or off the machine. Use the handrails and steps indicated by the arrow (B) only when moving along the top of the track or when checking or performing maintenance inside the side cover, or when filling...

  • Page 421: Switches

    ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION SWITCHES (1) Cigarette lighter (24 V) (11) Engine room light switch (if equipped) (2) Fuel control dial (12) Additional lamp switch (if equipped) (3) Rear lamp switch (13) Access light switch (if equipped) (4) Headlamp switch (14) Revolving lamp switch (if equipped) (5) Engine shutdown secondary switch (15) Console lifter switch...
  • Page 422 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS ACCESS LIGHT SWITCH The access light (C) is turned on with the access light switch. (This works even when the main key switch is turned to OFF position.) Since the switches (A) and (B) are synchronized, the access light can be turned on with the switch (A), and can be turned off with the switch (B).
  • Page 423 ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION ENGINE EMERGENCY SHUT DOWN SWITCH By turning the engine emergency shut down switch to ON posi- tion (A), the engine stops in emergency. ON position (A): Engine stops in emergency. OFF position (B): Engine can be started. REMARK •...

  • Page 424: Battery Isolator And Starting Motor Isolator

    MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS ENGINE ROOM LIGHT SWITCH Engine room light (A) is turned on with the engine room light switch. (It lights up even when the starting switch is at OFF position. Take care not to forget turning off the working lamp.) (a) ON position: Lights up (b) OFF position: OFF BATTERY ISOLATOR AND STARTING MOTOR ISOLATOR...

  • Page 425: Checks Before Starting

    ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION NOTICE Once this switch is turned to OFF position (b), all the pow- er supply circuits are cut out. As a result, the radio tuning preset button information and time information of the clock will possibly be lost.

  • Page 426: Method For Operations And Checks Before Starting Engine

    MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS REMARK • When performing the operations on slopes, pay care- ful attention to the amount of fuel remaining in the tank in order to prevent the engine from sucking in air. • If the filter of the breather (1) is clogged, the pressure inside the tank goes down and the fuel may not flow.

  • Page 427: Perform Kowa (Komatsu Oil Wear Analysis)

    Connect the other end of this cable to the external power supply connector for starting motor of the normal machine. PERFORM KOWA (Komatsu Oil Wear Analysis) Oil sampling interval 500 hours Precautions when sampling •...

  • Page 428: When Required

    Immediately after the engine is started, the wear powder precipitates in the oil and the oil density may be low so that the signs of error may not be found. Start the engine before collecting the oil. For further details of KOWA, contact your Komatsu distributor. WHEN REQUIRED...
  • Page 429 NAC) has excellent anti-corrosion, antifreeze and cooling properties and can be used continuously for 2 years or 4000 hours. Komatsu recommends the use of Non-Amine Engine Coolant (AF-NAC). If you use another coolant, it may cause serious problems, such as corrosion of the engine and aluminum parts of the cooling system.
  • Page 430 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS Place the containers to catch the mixed water with coolant under the drain valve (4) at the bottom of the radiator and under the drain valve (5) at the bottom of the oil cooler. Open the drain valves (4) and (5) to drain the coolant.

  • Page 431: Every 250 Hours Maintenance

    ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION NOTICE After changing the Non-Amine Engine Coolant (AF-NAC), the coolant level of the reservoir tank may largely decrease as time passes. If the machine is operated while the coolant level is low, serious failures such as breakage of EGR cooler and seizure of the engine inside may be caused.
  • Page 432 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS (3) Blade arm ball joint (1 place) (4) Brace screw (1 place) (5) Ripper tilt cylinder rod end pin (one place each at right and left) (6) Ripper lift cylinder rod end pin (one place each at right and left) (7) Ripper arm pin (rear) (one place each at right and left) (8) Ripper tilt cylinder bottom pin (2 places)

  • Page 433: Every 500 Hours Maintenance

    Tightening torque of drain valve (2): 63.7±14.7 Nm  {6.5±1.5 kgm}  Check the drained oil. If it contains much metallic powder or foreign material, contact your Komatsu distributor. Tighten the drain valve (2). Turn the full-flow filter cartridge (3) counterclockwise by us- ing the filter wrench, and remove it.
  • Page 434 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS After replacing the filter cartridge, refill with engine oil through oil filler port (F) until the oil level is between H and L marks on dipstick (G). Run the engine at idle for a time, then stop the engine. Check that the oil level is between H and L marks on the dipstick by referring to “METHOD FOR CHECKING OIL LEVEL IN ENGINE OIL PAN, ADDING OIL”.

  • Page 435: Every 1000 Hours Maintenance

    ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION REMARK Open oil filler port (F) before draining or adding engine oil by using this coupler. NOTICE • If the quick coupler is not installed securely, oil may be sent flying around during refilling. For safety, un- lock lock (L) of cover at box, then close the cover and operate.
  • Page 436 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS Take out the hose (1) and loosen the drain plug (2) to drain the oil. After draining the oil, tighten the drain plug (2). Remove the rear cover (3) of the L.H. side cover and the cover (4) on the L.H.
  • Page 437 ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION 10. Loosen the mounting bolts (10) of the scavenging pump strainer, and take out the strainer (11). Remove all dirt from strainer (11), then wash it in clean die- sel fuel or flushing oil. Clean the case interior and the removed parts as well.
  • Page 438 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS REMARK Before draining or adding oil through this coupler, open the oil filler port (F). NOTICE • While adding oil through the quick coupler, if the quick coupler is incorrectly installed, oil may splash around. Unlock (L) the cover of the box for safety, and use it while keeping the cover closed.
  • Page 439 ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION METHOD FOR REPLACING FUEL TANK BREATHER ELEMENT Remove nut (2) of breather assembly (1) on the top of the fuel tank. Remove cover (3). Replace breather element (4) with a new one. Install cover (3) and nut (2). As for the mining specification machine, replace the elements of fuel tank breather according to the following procedure.

  • Page 440: Every 2000 Hours Maintenance

    MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS EVERY 2000 HOURS MAINTENANCE Maintenance for every 250, 500, and 1000 hours services should be performed out at the same time. METHOD FOR CHANGING OIL IN HYDRAULIC TANK, REPLACING HYDRAULIC OIL FILTER ELEMENT, AND CLEANING HYDRAULIC TANK STRAINER WARNING •...
  • Page 441 ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION Loosen the cover (3) mounting bolts (4 pieces). Remove the cover (3). At this time, the cover may jump out under the force of spring (4), so hold the cover down when removing the bolts.
  • Page 442 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS 23. Check the oil level with the sight gauge (G) after approxi- mately 5 minutes. If the oil level is between H and L of the sight gauge (G), it is proper. 24. Install the cap. 25.
  • Page 443 ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION REMARK Before draining or adding the oil through this coupler, open the oil filler port (F). NOTICE • While adding oil through the quick coupler, if the quick coupler is incorrectly installed, oil may splash around. Unlock the cover of the box for safety, and use it while keeping the cover closed.
  • Page 444 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS Remove the breather (4) on upper side of the dumper. Remove all dirt from the breather, then wash it in clean diesel fuel or flushing oil. Install the breather (4) to its original position. As for the mining specification machine, replace the ele- ments of damper case and flywheel housing breather ac- cording to the following procedure.

  • Page 445: Consumable Parts

    The consumable parts should be replaced correctly in order to ensure more economic use of the machine. When replacing parts, Komatsu recommends using Komatsu genuine parts. As a result of our continuous efforts to improve product quality, the part number may change. Inform your Ko- matsu distributor of the machine serial number and check the latest part number when ordering parts.
  • Page 446 MACHINE WITH MINING SPECIFICATION ATTACHMENTS AND OPTIONS CONSUMABLE PARTS LIST The parts in parentheses are to be replaced at the same time. Weight Item Part No. Part name Q'ty Replacement interval Engine oil filter 600-211-1340 Cartridge 07063-51142 Cartridge Transmission filter (07000-A5165) (O-ring) Every 500 hours...
  • Page 447 ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION Weight Item Part No. Part name Q'ty Replacement interval 195-71-61550 Cutting edge 93.2 198-72-11181 Cutting edge 99.6 (198-71-21710) (Bolt) (22) (198-71-11230) (Washer) (22) (195-71-61950) (Nut) (22) Semi-U dozer 195-71-62931 End bit (L.H.) 113.0 195-71-62941 End bit (R.H.) 113.0...

  • Page 449: Replacement Parts

    REPLACEMENT PARTS...

  • Page 450: Periodic Replacement Of Defined Life Parts

    Also perform the following checks with hydraulic hoses which need not to be replaced periodically. Retighten all loose hoses and replace defective hoses, as required. When replacing hoses, always replace O-rings, gaskets, and other such parts at the same time. Have your Komatsu distributor replace the defined life parts. DEFINED LIFE PARTS LIST Periodical replacement parts...

  • Page 451: Consumable Parts

    The consumable parts should be replaced correctly in order to ensure more economic use of the machine. When replacing parts, Komatsu recommends using Komatsu genuine parts. As a result of our continuous efforts to improve product quality, the part number may change. Inform your Ko- matsu distributor of the machine serial number and check the latest part number when ordering parts.
  • Page 452 CONSUMABLE PARTS REPLACEMENT PARTS Weight Item Part No. Part name Q'ty Replacement interval 195-71-61550 Cutting edge 93.2 198-72-11181 Cutting edge 99.6 (198-71-21710) (Bolt) (22) (198-71-11230) (Washer) (22) (195-71-61950) (Nut) (22) Semi-U dozer 195-71-62931 End bit (L.H.) 113.0 195-71-62941 End bit (R.H.) 113.0 (198-71-21720) (Bolt)

  • Page 453: Recommended Fuel, Coolant, And Lubricant

    Failure to follow these recommendations may result in shortened life or excessive wear of the en- gine, power train, cooling system, and/or other components. • Commercially available lubricant additives may be good or bad for the machine. Komatsu does not recommend any commercially available lubricant additive. •...
  • Page 454 RECOMMENDED FUEL, COOLANT, AND LUBRICANT REPLACEMENT PARTS D375A-8 195-98-58211 • The symbols used in the lubrication chart are explained as follows. Symbol Meaning of the symbol Symbol Meaning of the symbol Read Operation and Maintenance Manual Supply grease Change engine oil...

  • Page 455: Method For Using Fuel, Coolant And Lubricants According To Ambient Temperature

    Hyper grease (Note.2) G2-TE (KES) Grease fitting Lithium EP grease G2-LI (KES) Non-Amine Engine Coolant Cooling system AF-NAC (KES) AF-NAC (Note.3) ASTM D975 No.1–D Fuel tank Diesel fuel ASTM D975 No.2–D KES: Komatsu Engineering Standard ASTM: American Society of Testing and Material...

  • Page 456: Recommended Brands And Qualities Other Than Komatsu Genuine Oils

    Even in the areas where freezing is not an issue, the use of coolant is essential. Komatsu recommends the use of Non-Amine Engine Coolant (AF-NAC). If you use another coolant, it may cause serious problems in the cooling system, including the engine.

  • Page 457: Index

    INDEX INDEX Symbols Ashtray..............3-108 Attachments and options........6-3 12H/24H display mode - Switch......3-84 Auto idle stop timer - Set........3-73 Auto switch............3-216 Auto-pitch..............3-45 Auto-pitch pilot lamp..........3-34 Access light switch........3-96,6-26 Automatic operation - Start......... 3-217 Accumulator - Function......... 4-72 Automatic operation - Stop......... 3-218 Accumulator - Handle...........
  • Page 458 INDEX Check signs and signalman's signals....2-18 Display/non-display of guidance when key is OFF - Checking and repairing method......3-205 Switch............3-69 Checks after inspection and maintenance....4-3 Do not drop things inside machine......4-2 Checks after stopping engine......3-208 Do not get caught in work equipment....2-15 Checks and adjustment before starting engine...3-127 Door - Prohibit opening while operating machine..
  • Page 459 INDEX Engine high-pressure piping - Replace....4-83 Fresh and clean lubricants........4-2 Engine high-pressure piping clamp - Check for loose- FRESH/RECIRC air selector switch....3-216 ness and hardening of rubber......4-79 Front wiper - Replace..........4-38 Engine intake pipe clamps - Check all tightening Fuel.................
  • Page 460 Keep machine clean..........2-10 chine............2-13,6-24 Komatsu Closed Crankcase Ventilation (KCCV) 3-125 Hard or frozen ground or ditch - Dig....3-195 Komatsu Diesel Particulate Fillter (KDPF) - Handle..Hard soil condition (hard clay soil, shale stratum, etc.) ..............3-115 ...............6-15 Komatsu genuine lubricants........4-2...
  • Page 461 Parking brake pilot lamp........3-31 fuel is used.............4-13 Parking brake system caution lamp...... 3-23 Maintenance of air conditioner......2-34 Perform KOWA (Komatsu Oil Wear Analysis) 4-7,6-31 Maintenance procedure........4-15 Periodic replacement of defined life parts..2-34,7-2 Maintenance schedule.......... 4-12 Phenomena and actions for chassis....3-247 Maintenance schedule table.........
  • Page 462 INDEX Pilot filter element - Replace......... 4-62 Precautions for working at high places....2-28 Pin puller - Operate..........3-197 Precautions for working under machine or work Pin puller operation switch........3-94 equipment............2-29 Pivot bearing - Check oil level / Add oil....4-71 Precautions related to attachments and options...2-15 Point and protector - Replace......
  • Page 463 Remove cab............3-231 Sound control button...........3-226 Replace defined life parts........4-77 Specifications............5-2 Reverse slow mode..........3-190 Specifications: D375A-8..........5-2 Reverse slow mode pilot lamp......3-31 Stability..............2-26 Reverse slow mode switch........3-44 Standard tightening torque for bolts and nuts..4-10 Revolving lamp switch.......... 3-97 Start engine............2-19...
  • Page 464 INDEX Undercarriage - Check oil........4-35 Understanding the machine........2-10 Use proper tools............2-29 User menu............3-59 User menu display switch........3-59 Vent selector switch - Select....... 3-214 Vibration levels............1-8 Visibility from operator's seat........ 1-10 Volume control button......... 3-225 Warning display.............3-13 Warning tags - Use..........
  • Page 466 D375A-8 BULLDOZER Form No. EENAM03603 ©2019 KOMATSU All Rights Reserved Printed in Belgium 01-2019...

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