Komatsu PC490-11E0 Operation & Maintenance Manual
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Komatsu PC490-11E0 Operation & Maintenance Manual

Komatsu PC490-11E0 Operation & Maintenance Manual

Hydraulic excavator
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Operation &
Maintenance Manual
PC490-11E0
PC490LC
HYDRAULIC EXCAVATOR
SERIAL NUMBERS
PC490-11E0
PC490LC-11E0
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.
-11E0
- K75096
and up
- K75096
and up
ORIGINAL INSTRUCTIONS
UENAM01635

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Summary of Contents for Komatsu PC490-11E0

  • Page 1 Operation & UENAM01635 Maintenance Manual PC490-11E0 PC490LC -11E0 HYDRAULIC EXCAVATOR SERIAL NUMBERS PC490-11E0 - K75096 and up PC490LC-11E0 - K75096 and up WARNING Unsafe use of this machine may cause serious injury or ORIGINAL INSTRUCTIONS 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: Read This Manual

    Some of Komatsu machines have the software based on the Open Source Software (OSS). By the license of the OSS, Komatsu publishes the license information of the software to be used in the website that follows. https://www.komatsu.jp/en/ProductInfo/opensoft/...

  • 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: Safety Labels

    Continuing improvements in the design of this machine can lead to changes in detail which may not be reflected in this manual Consult Komatsu or your Komatsu distributor for the latest available information of your machine or for ques- tions regarding information in this manual.

  • Page 10: Noise

    NOISE FOREWORD NOISE Two labels indicating the machine noise level are affixed on the machine. • The A-weighted emission sound pressure level (LpA) at the operator’s station measured according to ISO 6396 (Dynamic test method, simulated working cycle). The associated uncertainty KpA is 2.5dB (A). •...

  • Page 11: Vibration Levels

    FOREWORD VIBRATION LEVELS 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 12 VIBRATION LEVELS FOREWORD • Do not jump down from the cab or machine • Do not repeatedly handle and lift loads 1-10...

  • Page 13: Introduction

    FOREWORD INTRODUCTION INTRODUCTION MAIN USE OF MACHINE This Komatsu machine is designed to be used mainly for the following work: • Digging work • Ditching work • Loading work • Levelling work For details of work procedure, see MACHINE OPERATIONS AND CONTROLS “RECOMMENDED APPLICA- TIONS (3-231)”.

  • Page 14: Visibility From Operator's Seat

    INTRODUCTION FOREWORD (C) Left (E) Operator's seat (D) Right (F) Sprocket In this manual, the terms front, rear, left, and right refer to the travel direction as seen from the operator's seat when the operator's seat is facing the front and the sprocket is at the rear of the machine. VISIBILITY FROM OPERATOR'S SEAT This machine complies with the visibility standard (ISO 5006).

  • Page 15: Engine Technology To Conform Exhaust Gas Emission

    ENGINE TYPE" section of this manual. • Komatsu Diesel Particulate Filter (KDPF): A device which captures soot in the exhaust gas to clean the ex- haust gas. If soot is accumulated to a level in the filter, a purification step (called as “regeneration”) to burn the soot is done automatically to keep the filtering performance of KDPF high.

  • Page 16: Product Information

    PRODUCT INFORMATION FOREWORD 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 It is located on the right bottom of the operator's cab.

  • Page 17: Fluorinated Greenhouse Gases

    This is displayed on the machine monitor. YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR Machine serial No. Engine serial No. Product identification number (PIN) Manufacturers name: KOMATSU UK Ltd Address: Durham Road Birtley Chester-le-Street County Durham DH3 2QX United Kingdom Authorised representative, for EU KOMATSU EUROPE INT.

  • Page 18: Serial Plate

    SERIAL PLATE FOREWORD SERIAL PLATE Machines that are CE marked have the serial plate shown below. Machines that are CE and UKCA marked have the serial plate shown below. MACHINE DESIGNATION/TYPE ENGINE POWER SERIAL NUMBER PRODUCT IDENTIFICATION NUMBER YEAR OF CONSTRUCTION MANUFACTURER WEIGHT AUTHORISED REPRESENTATIVE...

  • Page 19: Method For Checking Engine Type

    Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 20 METHOD FOR CHECKING ENGINE TYPE FOREWORD Engine type [2] EPA + Stage V which comply to EPA Tier4 Final emission regulation and EU Stage V emission regulation have the engine number plate shown below. [2] EPA + EU Stage V g0126427 1-18...

  • Page 21: Declaration Of Conformity

    FOREWORD DECLARATION OF CONFORMITY DECLARATION OF CONFORMITY The Manufacturer/Authorised representative: The Manufacturer: Authorised representative: for EU & NI: for GB: KOMATSU UK Ltd KOMATSU EUROPE INT. Mechelsesteenweg 586 Durham Road B-1800 Vilvoorde Birtley Belgium Chester-le-Street County Durham DH3 2QX Declares that this machine:...

  • Page 22: Table Of Contents

    CONTENTS FOREWORD CONTENTS FOREWORD..............................1-1 READ THIS MANUAL ..........................1-2 KOMATSU MACHINE OPERATOR PRIVACY POLICY ................1-3 SAFETY INFORMATION .......................... 1-6 SAFETY LABELS ............................. 1-7 NOISE............................... 1-8 VIBRATION LEVELS ..........................1-9 VIBRATION - OPERATING CONDITION ................... 1-9 GUIDE TO REDUCE VIBRATION LEVELS ON MACHINE ..............1-9 INTRODUCTION .............................1-11...
  • Page 23 FOREWORD CONTENTS PRECAUTIONS FOR ADDING ......................2-52 SAFETY RULES FOR STORAGE ....................2-52 PRECAUTIONS FOR FIRE HAZARD AND LEAKAGE ..............2-52 OTHER PRECAUTIONS........................2-52 OPERATION ..............................3-1 GENERAL VIEW............................3-2 MACHINE EQUIPMENT NAME ......................3-2 CAB EQUIPMENT NAMES........................ 3-4 CONTROLS AND GAUGES NAMES ....................3-5 EXPLANATION OF COMPONENTS ......................
  • Page 24 OTHER TROUBLE......................... 3-293 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 ALWAYS USE CLEAN WASHER FLUID .................... 4-2 FRESH AND CLEAN LUBRICANTS ....................4-2 CHECK DRAINED OIL AND USED FILTER..................
  • Page 25 CONSUMABLE PARTS ........................7-3 RECOMMENDED FUEL, COOLANT, AND LUBRICANT ................7-5 LUBRICATION CHART ........................7-7 USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE ..7-8 RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU GENUINE OILS ....7-9 INDEX................................8-1 1-23...

  • Page 27: 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 28 SAFETY SAFETY SAFETY SAFETY LABELS ............................2-4 LOCATION OF SAFETY LABELS......................2-5 CONTENTS OF SAFETY LABELS ......................2-7 GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE ........... 2-19 PRECAUTIONS BEFORE STARTING OPERATION................2-19 ENSURE SAFE OPERATION ......................2-19 UNDERSTAND THE MACHINE ....................... 2-19 PREPARATIONS FOR SAFE OPERATION ....................
  • Page 29 SAFETY SAFETY PRECAUTIONS WHEN OPERATING ON SLOPES ................ 2-36 PROHIBITED OPERATIONS ......................2-36 PRECAUTIONS WHEN OPERATING ON SNOW OR FROZEN SURFACES........2-38 PRECAUTIONS WHEN PARKING MACHINE ................. 2-38 PRECAUTIONS FOR TRANSPORTATION..................... 2-38 PRECAUTIONS WHEN LOADING AND UNLOADING ..............2-39 TOWING AND BEING TOWED....................... 2-40 PRECAUTIONS FOR TOWING AND BEING TOWED..............

  • Page 30: 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 31: Location Of Safety Labels

    SAFETY SAFETY LABELS LOCATION OF SAFETY LABELS KS000848...
  • Page 32 SAFETY LABELS SAFETY KS000850 1. Combined safety information label 9. Caution against falling (a) Warning for operation, inspection and maintenance 10. Danger do not enter within swing range (b) Warning when leaving the operator's seat 11. Caution against work equipment (c) Warning no passengers 12.

  • Page 33: Contents Of Safety Labels

    SAFETY SAFETY LABELS 25. Warning for operation, inspection and mainte- 26. Caution for high-temperature resistance nance CONTENTS OF SAFETY LABELS Combined safety information label (1) (2A5-00-21180) • Warnings for operation, inspection and maintenance. • Improper operation and maintenance can cause serious in- jury or death.
  • Page 34 SAFETY LABELS SAFETY Warning no passengers • c. No passengers allowed to ride on the machine while it is moving. Warning danger of falling objects • d. Do not operate where a danger of falling objects exists. Consult your dealer for fitting of FOPS (FALLING OBJECT PROTECTIVE STRUCTURE) protection.
  • Page 35 SAFETY SAFETY LABELS Control levers operational function diagram f. Control levers operating pattern. In order to prevent an accident resulting in injury or death caused by error-operation, confirm the machine motion and in- dicated operating pattern, when operating machines. Pay atten- tion to the circumference and operate slowly when confirming the machine motion.
  • Page 36 SAFETY LABELS SAFETY Warning when reversing • h. Take care when reversing. To prevent SEVERE INJURY or DEATH, do the following be- fore moving machine or its attachments: • Sound horn to alert people nearby. Be sure no one is on or near machine or in swing area. Rotate cab for full view of travel path if it can be done safe- Use spotter if view is obstructed.
  • Page 37 SAFETY SAFETY LABELS Caution for handling accumulator and gas spring (4) Caution for handling accumulator and gas spring (09659- A057B) • There is a hazard of explosion causing injury. • Do not disassemble the accumulator, make holes in it, weld it, cut it, roll it or bring it near a flame. Caution for adjusting track tension (5) Caution for adjusting track tension (09657-A0881) •...
  • Page 38 SAFETY LABELS SAFETY Emergency escape (8) Emergency escape (09844-00050) Caution against falling (9) Caution against falling (09805-C0481) • Sign indicates a hazard of falling. • Do not stand on the place here. Danger do not enter within swing range (10) Prohibited to enter swing radius (09133-A3281) •...
  • Page 39 SAFETY SAFETY LABELS Caution for work equipment (11) Keeping out of working range area (09134-A1681) • Sign indicates a hazard of being hit by the working device of the machine. • Keep away from the machine during operation. Caution do not start by short-circuiting (12) Prohibition of short-circuit start (09842-A0481) Warning for quick coupler system (13) Warning for use of hydraulic quick coupler piping system...
  • Page 40 SAFETY LABELS SAFETY Warning when swinging or travelling in reverse (14) Warning when swinging or travelling in reverse (09833- A0881) WARNING • Before moving or operating the machine, look around and at mirror and monitor to confirm that no one is around the machine.
  • Page 41 SAFETY SAFETY LABELS (d) Caution battery acid. (e) Read the operator's manual before working with batteries. (f) Caution - explosive gases. Caution when replacing fresh air filter (16) Caution when replacing fresh air filter (208-00-71261) • After replacing fresh air filter, remember to remove key from cover as the key may get damaged when cab door is opened.
  • Page 42 SAFETY LABELS SAFETY Caution for high-pressure fuel (18) Caution for high-pressure fuel (6271-81-2980). Caution for high-temperature (19) Caution for high-temperature (09817-K064B) Warning for handling ROPS (20) Caution for machine with ROPS (09620-J2001, 09620- A3002) • If any modification is applied to the ROPS, it may affect the strength and may not comply with the standard.
  • Page 43 SAFETY SAFETY LABELS Caution for high-temperature (22) Caution for high-temperature Caution for handling DEF (23) DEF (Diesel Exhaust Fluid) (09632-60800) • To avoid engine damage or fire, fill with Diesel Exhaust Fluid (DEF) only. • Never use diesel fuel. Caution for handling DEF (24) Caution for handling DEF (09632-61480) •...
  • Page 44 SAFETY LABELS SAFETY Caution high-temperature resistor (26) Caution high-temperature resistor (22U-00-21940) • Caution burn hazard. • Do not touch the resistor's silver metallic body behind the cover. • Read manual before operation and maintenance. 2-18...

  • Page 45: General Precautions Common To Operation And Maintenance

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- SAFETY NANCE GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE Mistakes in operation, inspection, or maintenance may result in serious personal injury or death. Before per- forming operation, inspection, or maintenance, always read this manual and the safety labels on the machine carefully and obey the warnings.

  • Page 46: Precautions To Prevent Fire

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY KEEP MACHINE CLEAN • If you get on or off the machine or perform inspection and maintenance on the machine with mud or oil, you may slip and fall, and it is dangerous. Wipe off any mud or oil from the machine. Always keep the machine clean.

  • Page 47: Prevent Fire

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- SAFETY NANCE • Use the handrails and steps to escape from the machine. • Do not jump off the machine. There is the danger of falling and it may cause personal injury. • The fume generated by a fire contains harmful materials which have a bad influence on your body when they are inhaled.

  • Page 48: Precautions When Getting On Or Off Machine

    Fire around the machine due to highly heated exhaust gas This machine is equipped with Komatsu Diesel Particulate Filter (hereafter KDPF). KDPF is a device to purify the soot in the exhaust gas. Exhaust gas temperature may increase during the after- treatment devices regeneration.

  • Page 49: No Jumping On Or Off Machine

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- SAFETY NANCE • Always face the machine and maintain at least three-point contact (both feet and one hand, or both hands and one foot) with the handrails and steps to ensure that you sup- port yourself.

  • Page 50: Do Not Get Caught In Work Equipment

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY • When leaving the machine, be sure to make the undercar- riage and upper structure point to the same direction, and lower the work equipment to the ground. Operate the oper- ating portion (g) of the lock lever (1) to set it to LOCK posi- tion (L) and stop the engine.

  • Page 51: Protection Against Falling, Flying Or Intruding Objects

    • 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 52: Actions In The Event Of Damage To Safety Structures

    No attempt should be made to repair these parts as this may have an adverse effect on component strength or durability. If such a repair is undertaken without authorisation from Komatsu there is a danger that a problem might occur that will lead to serious personal injury.

  • Page 53: Unauthorized Modification

    Komatsu distributor before installing if you have any questions. Any injuries, accidents, or product failures resulting from the use of unauthorized attachments or parts will not be the responsibility of Komatsu. Any per- sonal injuries, product failures, physical loss or damage, or influence on the environment resulting from the use of unauthorized attachments or parts will not be the responsibility of Komatsu.

  • Page 54: Precautions Related To Cab Glass

    GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTE- NANCE SAFETY Before using unfamiliar work equipment, review the manufacturer's work equipment safety and operation man- uals and check for any potential operator cab interference and operate with caution. Never operate attachment or bucket near cab of machine. Always be aware when operating on slopes or traveling, that attachments may change the center of gravity on the machine and increase the possibility of a rollover situation.

  • Page 55: 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 56: Ensure Good Visibility

    PRECAUTIONS FOR OPERATION SAFETY Voltage of Cables Safety Distance 154000 V Min. 5 m 187000 V Min. 6 m 275000 V Min. 7 m 500000 V Min. 11 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 57: 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 58: Precautions When Starting Engine

    PRECAUTIONS FOR OPERATION SAFETY • Remove all dirt from the surface of the lens of the headlamps and working lamps, and check that they light up correctly. • Check the coolant level, fuel level, and oil level in engine oil pan, check for clogging of the air cleaner, and check for damage to the electric wiring.

  • Page 59: Precautions For Operation

    SAFETY PRECAUTIONS FOR OPERATION • Always wear protective eyeglasses and rubber gloves when starting the engine by using the jumper cables. • When connecting a normal machine to a failed machine with the jumper cables, always use the normal machine with the same battery voltage as the failed machine.

  • Page 60: When Travelling In Forward Or Reverse And Swinging

    PRECAUTIONS FOR OPERATION SAFETY WHEN TRAVELLING IN FORWARD OR REVERSE AND SWINGING • When driving the machine, drive with sprocket (1) at the rear of the machine. If sprocket (1) is at the front, the oper- ation of the travel levers will be the opposite of the actual direction of travel, so there is a hazard that the machine may travel in an unexpected direction, leading to serious injury or death.

  • Page 61: Precautions When Traveling On Slopes

    SAFETY PRECAUTIONS FOR OPERATION slopes. If the machine is operated with the auto-deceleration system ON (activated), the engine speed will rise and the machine travel speed may suddenly become faster. • Try to avoid travelling over obstacles. If the machine has to travel over an obstacle, keep the work equipment close to the ground and travel at low speed.

  • Page 62: Precautions When Operating On Slopes

    PRECAUTIONS FOR OPERATION SAFETY • When driving the machine up a steep slope, extend the work equipment to the front to improve the balance, keep the work equipment at height (a) of approximately 20 to 30cm above the ground, and drive it at low speed. •...
  • Page 63 SAFETY PRECAUTIONS FOR OPERATION • It is dangerous to work under an overhang. Mudslide or rockfall may occur, or the overhang may collapse. Never perform digging under an overhang. • Do not excavate too deeply under the front of the machine. The ground under the machine may collapse and cause the machine to fall.

  • Page 64: Precautions For Transportation

    PRECAUTIONS FOR OPERATION SAFETY PRECAUTIONS WHEN OPERATING ON SNOW OR FROZEN SURFACES • Snow-covered or frozen surfaces are slippery, so be extremely careful when travelling or operating the ma- chine, and do not perform abrupt lever operation. Machine may slip even on a slight slope. Be particularly careful when working on slopes.

  • Page 65: Precautions When Loading And Unloading

    • 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 improper when loading or unloading the machine, it is dangerous that the machine may tip over or fall.

  • Page 66: Towing And Being Towed

    PRECAUTIONS FOR OPERATION SAFETY 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 67 SAFETY PRECAUTIONS FOR OPERATION • Do not use the work equipment or swing to pull the load in any direction. There is danger that the hook may break and the load come off, causing the work equipment to move suddenly and cause personal injury. •...

  • Page 68: 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 69: Stability

    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 70: Precautions When Installing, Removing, Or Storing Attachments

    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 71: Precautions For Check And Maintenance

    SAFETY PRECAUTIONS FOR MAINTENANCE • You must walk along the access aisle for checking being paved with non-slip pads. Never climb on the en- gine hood and cover to prevent personal injuries from falling or failing over due to losing your footing. 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.

  • Page 72: Precautions For Welding

    PRECAUTIONS FOR MAINTENANCE SAFETY PRECAUTIONS FOR WELDING Welding operations must always be performed by a qualified welder and in a place equipped with proper equip- ment. There is a hazard of gas, fire, or electric shock when performing welding, so never allow any unqualified person to perform welding.

  • Page 73: Precautions When Using Hammer

    SAFETY PRECAUTIONS FOR MAINTENANCE PRECAUTIONS WHEN USING HAMMER When using a hammer, pins may come out or metal particles may be scattered. It is dangerous and may cause serious personal injury or death. Always observe the following. • When hitting pins or bucket teeth, broken pieces may be scattered, and it may cause personal injury to the people in the surrounding area.

  • Page 74: Precautions For High-Pressure Fuel

    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 75: Precautions For High-Pressure Grease When Adjusting Track Tension

    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. HANDLE ACCUMULATOR AND GAS SPRING This machine is equipped with an accumulator.

  • Page 76: Precautions For Compressed Air

    • When disposing of the accumulator, the gas must be re- leased. Ask your Komatsu distributor to perform this work. PRECAUTIONS FOR COMPRESSED AIR • When performing cleaning with compressed air, there is a hazard of serious personal injury or death caused by flying dust or particles.
  • Page 77 SAFETY PRECAUTIONS FOR MAINTENANCE Replacement of the defined life parts: See “PERIODIC REPLACEMENT OF DEFINED LIFE PARTS”. • The material of these components naturally changes over time, and repeated use causes deterioration, wear, and fatigue. As a result, there is a hazard that these components may fail and cause serious personal injury or death.

  • Page 78: Precautions For Def

    PRECAUTIONS FOR DEF SAFETY PRECAUTIONS FOR DEF GENERAL CHARACTER AND PRECAUTIONS FOR HANDLING DEF is a colourless transparent 32.5% aqueous urea solution. Urea as main constituent is a material which is used for cosmetics, medical and pharmaceutical products, and fertilizer, etc. The following situations require im- mediate action: •...

  • Page 79: Operation

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

  • Page 80: General View

    GENERAL VIEW OPERATION GENERAL VIEW MACHINE EQUIPMENT NAME (1) Bucket (7) Sprocket (2) Bucket cylinder (8) Track frame (3) Arm (9) Track (4) Arm cylinder (10) Idler (5) Boom (11) Engine hood (6) Boom cylinder...
  • Page 81 OPERATION GENERAL VIEW Detail of A and B parts (12) Komatsu Closed Crankcase Ventilation (hereafter (17) Battery disconnect switch KCCV) ventilator (18) System operating lamp (13) SCR (19) Fusible link (14) KDPF (20) Grease pump holder (15) Toolbox (21) KomVision...

  • Page 82: Cab Equipment Names

    GENERAL VIEW OPERATION CAB EQUIPMENT NAMES (1) Front window (7) Fire extinguisher (if equipped) (2) Ceiling window (8) Emergency escape hammer (3) Door lock release lever (9) Magazine box (4) Drink box (10) Cup holder (5) Fuse (11) AUX (6) Auxiliary electric power (if equipped) (12) Ashtray...

  • Page 83: Controls And Gauges Names

    OPERATION GENERAL VIEW CONTROLS AND GAUGES NAMES KS000852 (1) Radio (4) One-touch power maximizing switch (2) Lock lever (5) Travel pedal (3) L.H. work equipment control lever (6) Travel lever...
  • Page 84 GENERAL VIEW OPERATION (7) Horn switch (24) Swing parking brake cancel switch (8) Machine monitor (25) Lock lever automatic lock cancel switch (9) R.H. work equipment control lever (26) 1st attachment proportional control switch (10) Starting switch (27) 2nd attachment proportional control switch (if equipped) (11) Fuel control dial (28) Breaker switch...
  • Page 85 OPERATION GENERAL VIEW (9) Fuel consumption gauge (26) Lock lever pilot lamp (10) Service meter (27) Aftertreatment devices regeneration pilot lamp (11) Working mode display (28) Aftertreatment devices regeneration disable pilot lamp (12) Travel speed display (29) Message display (13) Camera image switching display (30) Air conditioner pilot lamp (14) Clock (31) Engine oil level caution lamp...

  • Page 86: 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 87 OPERATION EXPLANATION OF COMPONENTS BASIC OPERATION OF MACHINE MONITOR BASIC OPERATION OF MACHINE MONITOR WHEN STARTING ENGINE IN NOR- MAL SITUATION • When the starting switch is turned to ON position, the opening screen GG is displayed. • After the opening screen GG is displayed for 2 seconds, the screen switches to the check before starting screen BB.
  • Page 88 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 89 EXPLANATION OF COMPONENTS End screen when any message has been re- ceived 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 90 Be careful not to use it for the purpose of security enhance- ment. 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 person.
  • Page 91 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 92 EXPLANATION OF COMPONENTS OPERATION If there is any error existing, “！” is displayed on top of switch F5. switch F5. 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 3-14...
  • Page 93 OPERATION EXPLANATION OF COMPONENTS • If any abnormality occurs during operation, the standard screen AA changes to warning screen FF-(1) or the error screen EE. • After displaying warning screen FF-(1) for 2 seconds, the screen automatically changes to warning screen FF-(2).
  • Page 94 EXPLANATION OF COMPONENTS OPERATION BASIC OPERATION OF MACHINE MONITOR WHEN OPERATING WORK EQUIP- MENT, SWING AND TRAVEL Machine monitor screen automatically changes to the screen which displays the bird's eye view display of Kom- Vision when operating work equipment, swing and travel. AA: standard screen BB: enlarged screen of bird's eye view display CC: camera image screen DD: no camera image screen (user menu, etc.) (1) Bird's eye view display...

  • Page 95: Warning Display

    OPERATION EXPLANATION OF COMPONENTS WARNING DISPLAY NOTICE Appearance of any of action levels “L01” to “L04” on the machine monitor indicates presence of an ab- normality the machine. Take appropriate actions following the list of action level displays and remedies. The caution lamp that lights up in red when an action level is displayed warns operator to stop the ma- chine urgently, stop or pause the current operation.
  • Page 96 Stop the operation, and run the engine at medium speed with │ mittently no load or stop it. │ If the condition is not improved, ask your Komatsu distributor ↓ for inspection and maintenance. Does not Lights up in Some functions may be restricted from use, but the machine...
  • Page 97 OPERATION EXPLANATION OF COMPONENTS Caution lamps and display colours Display colour/Machine condition (Action level) Symbol Type of caution lamp Yellow White Blue High temperature Engine coolant temperature Low temper- Normal caution lamp ature (L02) High temperature Hydraulic oil temperature Low temper- Normal caution lamp ature...
  • Page 98 EXPLANATION OF COMPONENTS OPERATION Display colour/Machine condition (Action level) Symbol Type of caution lamp Yellow White Blue Low oil level Engine oil level caution lamp (L01) Low coolant level Radiator coolant level cau- tion lamp (L01) Abnormal Charge level caution lamp (L03) Clogged Air cleaner clogging caution...
  • Page 99 OPERATION EXPLANATION OF COMPONENTS 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 message displayed on the monitor.
  • Page 100 EXPLANATION OF COMPONENTS OPERATION 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 monitor is lit, the overheat prevention system is auto- matically actuated and the engine speed drops.
  • Page 101 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 102 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 103 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 104 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 105 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 106 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 107 GINE OIL PAN, ADDING OIL (3-173)”. If the oil level drops again in a short time, the engine oil may be leaking. For the inspection and maintenance, ask your Komatsu distributor. RADIATOR COOLANT LEVEL CAUTION LAMP Radiator coolant level caution lamp warns about drop of radia- tor coolant level.
  • Page 108 Charging is not being performed normally while the engine is running. Stop the engine and check the alternator belt for damage, then ask your Komatsu distributor for inspection and maintenance. AIR CLEANER CLOGGING CAUTION LAMP Air cleaner clogging caution lamp warns about clogging of the air cleaner.
  • Page 109 • The lighting time of maintenance time notice (yellow) has been initially set to 30 hours, but it can be changed. To change the setting, ask your Komatsu distributor. • For operations on the maintenance tab screen, see “MAIN- TENANCE SCREEN SETTING”.
  • Page 110 Visually check the safety around the machine always when operating the machine. When you finish the operation, always perform the inspection and maintenance. Ask your Komatsu distributor for the inspection and maintenance as needed. CAMERA SYSTEM CAUTION LAMP When an abnormality occurs in KomVision system controller, the caution lamp lights up in yellow, and the action level “L01”...

  • Page 111: Pilot Display

    OPERATION EXPLANATION OF COMPONENTS PILOT DISPLAY AND METER DISPLAY Pilot display (1) Engine stop pilot lamp (8) Swing lock pilot lamp (2) Lock lever pilot lamp (9) One-touch power maximizing pilot lamp (3) Aftertreatment Devices Regeneration pilot lamp (10) Preheating pilot lamp (4) Aftertreatment Devices Regeneration disable pilot (11) Auto-deceleration pilot lamp lamp...
  • Page 112 EXPLANATION OF COMPONENTS OPERATION PREHEATING PILOT LAMP The preheating pilot lamp is displayed while the engine is pre- heated before started. When the temperature is low (in cold weather) and the auto- matic preheating function operates, the preheating pilot lamp lights up.
  • Page 113 OPERATION EXPLANATION OF COMPONENTS WORKING MODE DISPLAY The working mode display shows the setting of the working mode. The working mode set with the working mode selector switch is shown as follows. P: P mode (for heavy-load operations) E: E mode (for operations with emphasis on fuel consumption) L: L mode (for fine control operations and lifting operations) B: B mode ( for breaker operations) (For machines ready for in- stallation of attachments)

  • Page 114: Message Display

    When there are thatched houses, dry leaves or pieces of paper near the job site, set the system to the regeneration disable to prevent fire hazards due to highly heated exhaust gas during the after- treatment devices regeneration. For details of the setting method, see “HANDLE KOMATSU DIESEL PARTICULATE FILTER (KDPF)”.
  • Page 115 For the procedures of cancellation of the regeneration disable setting, and setting of manual stationary regeneration, see “HANDLE KOMATSU DIESEL PARTICULATE FILTER (KDPF)”. LOCK LEVER PILOT LAMP The lock lever pilot lamp lights up when the lock lever is in LOCK position.
  • Page 116 EXPLANATION OF COMPONENTS OPERATION 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 monitor. When waiting for work or taking short break, stop the engine to reduce unnecessary fuel consumption.
  • Page 117 OPERATION EXPLANATION OF COMPONENTS Low Fuel Level Guidance If the operable time estimated from the current fuel level and the latest average fuel consumption is shorter than 8 hours, the low fuel level message is displayed roughly. The low fuel level message goes out more than 10 seconds af- ter or when switch F5 is pressed.

  • Page 118: Hydraulic Oil Temperature Gauge

    EXPLANATION OF COMPONENTS OPERATION Red range (B) position: Engine speed changes to low idle, engine coolant 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. When the engine is started, if the indicator is at position (D), engine coolant temperature caution lamp (E) shows the low-temperature display.

  • Page 119: Fuel Gauge

    OPERATION EXPLANATION OF COMPONENTS FUEL GAUGE Fuel gauge shows the amount of fuel in the fuel tank. The indicator should be in the green range during operations. When the indicator nears red range (A) during operation, the remaining fuel is 114 ℓ or less, so check the fuel level and add (A) to (B): Red range (A) to (C): Green range REMARK...

  • Page 120: Eco Gauge

    EXPLANATION OF COMPONENTS OPERATION ECO GAUGE ECO gauge shows the instantaneous fuel consumption. The instantaneous fuel consumption means the fuel consump- tion rate at each moment, which varies with the work load and engine speed. When the gauge is in green range A, the instantaneous fuel consumption is at Good to Medium level.

  • Page 121: Monitor Switches

    OPERATION EXPLANATION OF COMPONENTS REMARK • Immediately after turning the starting switch to ON position and during the engine is running, DEF level cau- tion lamp (1) lights up in white. However, this does not indicate abnormality. • In cold weather, DEF level cannot be detected and DEF level caution lamp (1) lights up in white for approxi- mately 1 hour.
  • Page 122 EXPLANATION OF COMPONENTS OPERATION FUNCTION SWITCHES AND GUIDANCE ICONS • There are 6 function switches (1) (F1 to F6) at the bottom of the monitor display. The function of each switch differs according to the content of each screen. • On each screen, you can confirm the function of switches (1) by guidance icons (2) displayed on top of the switch.
  • Page 123 OPERATION EXPLANATION OF COMPONENTS (F) Switch F1: Moves to the left item. (When on the left end, it moves to the right end.) (G) Switch F2: Moves to the right item. (When on the right end, it moves to the left end.) (H) Switch F3: Moves to the item below (forward).
  • Page 124 If you want to have automatic setting of P, E, L, B, ATT/P or ATT/E mode (optional default setting) when starting engine , ask your Komatsu distributor to change the setting. How to use working mode selector switch When working mode selector switch (2) is pressed, the Working Mode selector screen is displayed on the monitor.
  • Page 125 OPERATION EXPLANATION OF COMPONENTS REMARK To return to the standard screen without changing the working mode, press function switch F5. After selecting the desired mode, press function switch F6 and the mode is displayed in the center of the monitor dis- play.
  • Page 126 EXPLANATION OF COMPONENTS OPERATION AUTO-DECELERATION SWITCH Auto-deceleration switch automatically lowers the engine speed and turns on the function to reduce fuel consumption when the control levers are at NEUTRAL position. Auto-deceleration pilot lamp lights up: Auto-deceleration ON Auto-deceleration pilot lamp goes off: Auto-deceleration OFF Each time the switch is pressed, the auto-deceleration is switched between ON and OFF.
  • Page 127 OPERATION EXPLANATION OF COMPONENTS TRAVEL SPEED SELECTOR SWITCH WARNING • When loading to or unloading from a trailer, always drive the machine at low speed (set the travel speed selector switch to Lo) and never operate the travel speed selector switch during travel. •...

  • Page 128: Wiper Switch

    EXPLANATION OF COMPONENTS OPERATION WIPER SWITCH Wiper switch actuates the front window windshield wiper. Each time the switch is pressed, it changes INT → ON → stop (monitor goes out). Windshield wiper pilot lamp INT lights up: Windshield wiper op- erates intermittently Windshield wiper pilot lamp ON lights up: Windshield wiper op- erates continuously...
  • Page 129 OPERATION EXPLANATION OF COMPONENTS WINDOW WASHER SWITCH Keep pressing this switch continuously, and window washer flu- id is sprayed out on the front glass. When releasing the switch, the spray stops. • If keep pressing the switch when the wiper is stopped, the window washer fluid is sprayed out.

  • Page 130: Air Conditioner Switch

    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”. FUNCTION SWITCHES The operation of the function switches in the standard screen MONITOR DISPLAY SELECTOR SWITCH By pressing the switch F3 on the standard screen, you can en- large the bird's eye view display, switch to the camera image screen.
  • Page 131 OPERATION EXPLANATION OF COMPONENTS Operation on the camera image display screen Operate the following for changing the camera image display on the machine monitor. AA: Standard screen, BB: Enlarged bird's eye view display, CC: Camera image screen • On the standard screen AA, the synthesized image to show the area around the machine from above and the image of the camera loaded into the machine are displayed on the left and right sides of the machine monitor, respectively.
  • Page 132 EXPLANATION OF COMPONENTS OPERATION On the start screen, the camera image switch display flashes in the position shown in the figure. The green range of the camera image switch display shows of which camera the image is displayed. Camera switch display Displayed camera position Rear camera Left rear camera...
  • Page 133 OPERATION EXPLANATION OF COMPONENTS OTHER MODE OPERATIONS WHILE CAMERA IMAGE IS DISPLAYED Even when the camera image is displayed, it is possible to op- erate the following modes. But operation of air conditioner and working mode cannot be changed while operating work equipment, swing and travel. Finish the operation, and set the directional lever to NEUTRAL position.
  • Page 134 EXPLANATION OF COMPONENTS OPERATION • Press the auto-deceleration switch to turn on or off the au- to-deceleration function. Even if the auto-deceleration switch is pressed, the cam- era image display screen neither switches to another screen nor returns to the standard screen display. •...
  • Page 135 OPERATION EXPLANATION OF COMPONENTS • If the caution lamp is displayed, press the switch F5 to re- turn to the standard screen, and check the content of the abnormality or warning display. While the caution lamp is flashing, if no lever is operated for 10 seconds or more, the screen automatically returns to the standard screen.
  • Page 136 EXPLANATION OF COMPONENTS OPERATION 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. (a): Energy Saving Guidance (b): Machine Settings (c): Aftertreatment Devices Regeneration (d): SCR Information (e): Maintenance (f): Monitor Setting...
  • Page 137 OPERATION EXPLANATION OF COMPONENTS (c) Aftertreatment Devices Regeneration • Setting for Regeneration Disable • Operation of Manual Stationary Regeneration (d) SCR Information • Check of DEF level • Urea SCR system information (e) Maintenance • Check and reset of various Maintenance Times (f) Monitor Setting •...
  • Page 138 EXPLANATION OF COMPONENTS OPERATION 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. F2: Moves to the right menu.
  • Page 139 OPERATION EXPLANATION OF COMPONENTS CHECK OPERATING RECORD Select the Operation Records (1) from the Energy Saving Guid- ance menu screen, then press switch F6. On the Operation Records menu, the working hours, Average Fuel Consumption, Actual working hours, Ave. Fuel Consump- tion (Actual Working), Fuel Consumption, Idling Hours and E mode time ratio on daily basis or on a split measurement peri- od basis are displayed.
  • Page 140 EXPLANATION OF COMPONENTS OPERATION REMARK ECO guidance denotes displaying the guidance for energy sav- ing operation. This display may appear on the standard screen while the machine is in operation. CHECK FUEL CONSUMPTION RECORD Select the Average Fuel Consumption Record (3) from the En- ergy Saving Guidance menu screen, then press switch F6.
  • Page 141 OPERATION EXPLANATION OF COMPONENTS Switching of displayed graph Press F2 on the Average Fuel Consumption Record screen to change the currently displayed graph to another. REMARK There are 2 types of graphs. One shows hourly average fuel consumption during the last 12 hours and the other is daily average fuel consumption during the last 1 week.

  • Page 142: Change Display Setting

    EXPLANATION OF COMPONENTS OPERATION CHANGE DISPLAY SETTING Select Configurations (4) from the Energy Saving Guidance menu screen, then press switch F6. On the Configurations menu, following operations are availa- ble. • Setting the Average Fuel Consumption Display • Switching ON/OFF of the ECO Gauge Display •...
  • Page 143 OPERATION EXPLANATION OF COMPONENTS 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. F3: Moves to the next item (1 line below). When on the last line, it moves to the first line on the next page.
  • Page 144 EXPLANATION OF COMPONENTS OPERATION 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 145 OPERATION EXPLANATION OF COMPONENTS On the Configurations screen, it is possible to perform the fol- lowing operations with switches F3 to F6. F3: Moves to the next item (1 line below). When on the last line, it moves to the first line on the next page. F4: Moves to the previous item (1 line above).
  • Page 146 EXPLANATION OF COMPONENTS OPERATION 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. OFF: Does not display ECO Guidance (10) on the stand- ard screen.

  • Page 147: Machine Settings

    OPERATION EXPLANATION OF COMPONENTS 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. On this screen, it is possible to perform the following operations with switches F3 to F6.
  • Page 148 EXPLANATION OF COMPONENTS OPERATION ADJUST ECONOMY MODE Select the “Economy Mode Adjustment” (1) on the “Machine Setting (b)” menu screen, then press switch F6. On the “Economy Mode Adjustment ”menu, you can adjust the engine output in E mode. In the economy mode, the higher the selected number starting from E0 becomes, the lower the engine output becomes.
  • Page 149 OPERATION EXPLANATION OF COMPONENTS On the “Breaker Setting” screen shown in the figure, select the breaker to adjust and press the switch F6. On the “Breaker Setting” screen shown in the figure, you can perform the following operations with switches F1 to F1: Changes the name of the selected breaker setting.
  • Page 150 EXPLANATION OF COMPONENTS OPERATION The “Breaker Oil Flow Rate Setting” screen is displayed. On the “Breaker Oil Flow Rate Setting” screen, you can perform the following operations with switches F3 to F6. F3: Decreases the oil flow rate by 1 level. F4: Increases the oil flow rate by 1 level.
  • Page 151 OPERATION EXPLANATION OF COMPONENTS Select a setting to change on the “Attachment Setting” screen, then press switch F6. The “Attachment Name Setting” screen is displayed. On the “Attachment Name Setting” screen, you can per- form the following operations with switches F1 to F6. F1: “CLEAR”...
  • Page 152 EXPLANATION OF COMPONENTS OPERATION BREAKER/ATTACHMENT SETTING On “Breaker/Attachment Setting”, you can change the name of attachment displayed on the monitor and the at- tachment oil flow rate setting. For the machines that have no attachment, “Attachment Setting” menu is not displayed. Select “Attachment Setting”...
  • Page 153 OPERATION EXPLANATION OF COMPONENTS Changing the flow rate of “Breaker/Attachment Setting” Select an attachment setting to change its oil flow rate on the “Attachment Setting” screen, then press the switch F2. • When working mode is set to B mode Change the flow rate by referring to “Changing the flow rate of Breaker Setting”.
  • Page 154 KDPF soot accumulation caution lamp lights up while the fan is rotating in reverse, return the fan to the normal rotation immediately and take necessary actions according to “HANDLE KOMATSU DIESEL PARTICULATE FILTER (KDPF)” until the aftertreat- ment devices regeneration pilot lamp or the KDPF soot accumulation caution lamp goes out.
  • Page 155 OPERATION EXPLANATION OF COMPONENTS To return the fan rotation direction from reverse to normal, press switch F5 on the screen shown in the figure. Press switch F6 when the confirmation screen shown in the figure is displayed. (If switch F5 is pressed, the screen returns to the previous screen.) If the screen shown in the figure is displayed, the engine speed is set to low idle automatically and the fan rotation...
  • Page 156 EXPLANATION OF COMPONENTS OPERATION REMARK • In some cases, the screen in step 3 does not change to that in step 4 and the screen shown in the figure is dis- played and the fan does not rotate in reverse. This hap- pens when the fan rotation is controlled not to be reversed for the hydraulic oil temperature condition to protect the components.
  • Page 157 OPERATION EXPLANATION OF COMPONENTS 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 158 2000 on the monitor. AFTERTREATMENT DEVICES REGENERATION Each item of “Aftertreatment Devices Regeneration” menu (c) is to make settings for the aftertreatment devices regeneration. For details of the aftertreatment devices regeneration, see “HANDLE KOMATSU DIESEL PARTICULATE FILTER (KDPF)”. SCR INFORMATION Each item of SCR information menu (d) is for displaying infor- mation related to SCR and DEF.
  • Page 159 OPERATION EXPLANATION OF COMPONENTS MAINTENANCE SCREEN SETTING Each item of setting menu (e) on maintenance screen is used for displaying and setting the notification relevant to mainte- nance. The items on the maintenance display are as follows. Air Cleaner Clean and Change Coolant Change Hydraulic Oil Additional Filter Change Hydraulic Oil Pilot Filter Change...

  • Page 160: Monitor Settings

    • 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 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 time reset screen.

  • Page 161: Screen Adjustment

    OPERATION EXPLANATION OF COMPONENTS SCREEN ADJUSTMENT Use “Screen Adjustment” menu to adjust brightness of the monitor screen. Select screen adjustment (1) on the “Monitor Setting” menu screen, then press switch F6. Use switches F2 to F6 to adjust brightness of the screen. F2: Resets an adjusted value to default value.

  • Page 162: Clock Adjustment

    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 “Monitor Setting”...

  • Page 163: Calendar Setting

    OPERATION EXPLANATION OF COMPONENTS REMARK • When the machine is in the environment where the radio waves from GPS cannot be received, such as inside of a building, the automatic setting function may not work. • While“GPS synchronization” menu is turned on, the menu for “Calendar” (b) and “Time” (c) cannot be selec- ted.

  • Page 164: Time Setting

    EXPLANATION OF COMPONENTS OPERATION TIME SETTING Adjust the time of the monitor clock. REMARK As long as “GPS Synchronization” is turned on, “Time” menu is not selectable. Select “Time” (c) on “Clock Adjustment” screen, then press switch F6. The “Time” screen is displayed. When the hour display (D) is highlighted in yellow, operate the switches as follows to change hour display (D).
  • Page 165 You can check and change the “Operator ID” which is under identification on the “Operator ID” menu. 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. 3-87...
  • Page 166 EXPLANATION OF COMPONENTS OPERATION 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” on the “Monitor Setting” menu screen. When the starting switch is ON and “SKIP” is selected, “****” is displayed in the column of “Operator ID”...
  • Page 167 OPERATION EXPLANATION OF COMPONENTS • When you press switch F1 on the “Operator ID Change” screen, a message is displayed below and the screen returns to the “Monitor Setting” menu screen. On the “Monitor Setting” menu screen, as the same way when the starting switch is ON and “SKIP”...

  • Page 168: Language Settings

    EXPLANATION OF COMPONENTS OPERATION • 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. •...
  • Page 169 MESSAGE DISPLAY On machines equipped with KOMTRAX, you can see the mes- sages from your Komatsu distributor on this message display menu (g). When there is any message, the message display at the left end of the standard screen lights up.

  • Page 170: Check Message

    • 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. Reply to the message according to the replying method mentioned below: • If the starting switch is turned to OFF position when there...

  • Page 171: Reply To Message

    OPERATION EXPLANATION OF COMPONENTS In case of a message requesting for reply, the column of “Numeric Input: []” is displayed in place (2) of the mail con- firmation menu. Make a reply to the message. REMARK • (3) is the subject of the received message. When no message is received, “No message”...

  • Page 172: Switches

    EXPLANATION OF COMPONENTS OPERATION SWITCHES KS000854 (1) One-touch power maximizing switch (10) Cigarette lighter (2) Horn switch (11) Room lamp switch (3) Starting switch (12) Seat heater switch (4) Fuel control dial (13) Engine shutdown secondary switch (5) Lamp switch (14) Pump secondary drive switch (6) Swing lock switch (15) Swing parking brake cancel switch...

  • Page 173: Starting Switch

    OPERATION EXPLANATION OF COMPONENTS (19) 2nd attachment proportional control switch (if (22) Lower wiper switch (if equipped) equipped) (23) Quick coupler switch (20) Breaker switch (21) Additional lamps switch (if equipped) STARTING SWITCH Starting switch is used to start or stop the engine. (A): OFF position The key can be inserted or withdrawn.

  • Page 174: Lamp Switch

    EXPLANATION OF COMPONENTS OPERATION Swing lock switch is used to lock the upper structure so that it cannot swing. (a) ON position The swing lock is always applied, and the upper structure does not swing even when the swing is operated. In this condition, the swing lock pilot lamp lights up.
  • Page 175 OPERATION EXPLANATION OF COMPONENTS Use room lamp switch to light up the room lamp. (a) ON position Lights up (b) OFF position The room lamp lights up even when the starting switch is at OFF position. PUMP SECONDARY DRIVE SWITCH CAUTION When pump secondary drive switch (1) is being used or immediately after it is used, the temperature of resistor (2)
  • Page 176 EXPLANATION OF COMPONENTS OPERATION SWING PARKING BRAKE CANCEL SWITCH NOTICE Swing operations can be performed temporarily with swing parking brake cancel switch when there is a problem in the swing parking brake system. Do not use it except for emergency. Repair the problem as soon as possible.
  • Page 177 • After moving the machine or work equipment temporarily by operating this switch, stop the engine, return the switch to normal position (b), and then ask your Komatsu distribu- tor for repair. REVOLVING LAMP SWITCH (if equipped) Revolving lamp switch is used to light up the yellow revolving lamp on top of the cab.
  • Page 178 OFF position but the engine does not stop. • Use the engine shutdown secondary switch only in an emergency. Contact your Komatsu distributor for repair immediately when there is any abnormality on this switch. • If the engine shutdown secondary switch is moved to the “stop engine” position by mistake while the machine is operating normally, “Engine Shutdown Secondary SW In Operation”...

  • Page 179: Breaker Switch

    OPERATION EXPLANATION OF COMPONENTS • When the starting switch is turned to ON position while the engine shutdown secondary switch is in the engine stopped position (a), “Engine Shutdown Sec- ondary SW In Operation” is displayed on the machine monitor. If this screen is displayed, return the engine shutdown secondary switch to the normal position (b).

  • Page 180: Other Equipment

    EXPLANATION OF COMPONENTS OPERATION The additional lamps switch is used to turn on the cab front lamps, cab rear lamps and extra boom lamps (If fitted by cus- tomer) (a) ON Lamps light up. (b) OFF Lamps go out. MACHINE PUSH-UP SWITCH Machine push-up switch is used to set the safety valve pres- sure on the head side of the boom circuit to 2 stages.
  • Page 181 Check that the wiper blade is stowed in the right stay. If the wiper blade is stowed in wrong stowing position (b), lift it to move to the correct stowing position (a), or ask your Komatsu distributor for repair. 3-103...
  • Page 182 EXPLANATION OF COMPONENTS OPERATION (a) Correct stowing position The wiper blade is on the cab. (b) Wrong stowing position The wiper blade is on the glass. Hold handles (A) (2 places) on the right and left top sides of the front window, and pull levers (B) (2 places) to re- lease the locks at the top of the front window.
  • Page 183 OPERATION EXPLANATION OF COMPONENTS Hold lower handle (C) with your left hand from inside the operator's cab, and with your right hand, grip top handle (D), pull it up, and push it against lock catch (E) at the rear of the cab securely to lock the window. REMARK Handles (A) on the right and left top sides of the front win- dow are not for pulling up the front window.
  • Page 184 Check that the wiper blade is stowed in the right stay. If the wiper blade is stowed in wrong stowing position (b), lift it to move to the correct stowing position (a), or ask your Komatsu distributor for repair. (a) Correct stowing position The wiper blade is on the cab.
  • Page 185 OPERATION EXPLANATION OF COMPONENTS Grip right and left handles (A), and pull down lever (B) to release the lock. Grip the handle (C) at the bottom of the front window with your left hand and the handle (D) at the top with your right hand, push the window to the front, then lower it slowly.

  • Page 186: Emergency Escape Hammer

    EXPLANATION OF COMPONENTS OPERATION Removal of front window (lower side) Open the front window (upper side), then hold grip (1), pull it up, and remove the lower side window. REMARK If sand or dust is collected at the bottom of the front win- dow (lower side), it will be difficult to remove the window.
  • Page 187 OPERATION EXPLANATION OF COMPONENTS To escape from the operator's cab, use the hammer (A) to break the glass and escape through the window. METHOD FOR USING DOOR LOCK WARNING • Before the releasing the door lock, always place the machine on a level ground. •...

  • Page 188: Drink Box

    EXPLANATION OF COMPONENTS OPERATION CAP AND COVER WITH LOCK Use the starting switch key to open and close the locks on the caps and covers. For the locations and opening or closing method of the cap with lock and cover, see “LOCK (3-239)”. Insert the key as far as it will go to the shoulder (A) and turn it.
  • Page 189 OPERATION EXPLANATION OF COMPONENTS ASHTRAY This is on top of the console box on the left side of the opera- tor's seat. Always extinguish your cigarette before putting it in the ashtray and be sure to close the lid. NOTICE While removing the ashtray, if it is stuck in the console cover and hard to be removed, open lid (A) of ashtray, then hold the ashtray body (B) and twist it to remove.
  • Page 190 EXPLANATION OF COMPONENTS OPERATION • The fuse holder is at the rear of the operator's seat. • It is provided to protect the electrical component and wiring from burning out. • If the fuse becomes corroded, or looks white powdery, or the fuse is loose in the fuse holder, replace the fuse.

  • Page 191: Fusible Link

    OPERATION EXPLANATION OF COMPONENTS Fuse 2 - Fuse capacities and circuit names Fuse ca- Name of circuit pacity 10 A Cab head lamp (1) 10 A Cab rear lamp 10 A Lower wiper 10 A Quick coupler 15 A Refuel pump 10 A Cab head lamp (2) 10 A...

  • Page 192: Grease Pump Holder

    EXPLANATION OF COMPONENTS OPERATION REMARK A fusible link refers to the large-sized fuse wiring installed in the high current flowing part of the circuit. It is provided to protect electrical components and wiring from burning out, in the same way as an ordinary fuse does.
  • Page 193 OPERATION EXPLANATION OF COMPONENTS NOTICE • Keep battery disconnect switch in ON position except the following cases. • When the machine is stored for a long time (more than a month) • When repairing the electrical system • When performing electric welding •...
  • Page 194 • 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 195 “L04” lights up. In this case, the machine needs to be repaired by your Komatsu distributor. Also, the maximum engine output and maxi- mum engine speed are limited to protect the engine and KDPF system.
  • Page 196 • Komatsu recommends the use of Komatsu genuine engine oil for KDPF. If the engine oil other than Komat- su genuine oil for KDPF is used, it can shorten cleaning interval of KDPF filters, adversely affect the engine such as deteriorated oil reduces the lubrication function, and it will cause a failure of the machine in some cases.
  • Page 197 OPERATION EXPLANATION OF COMPONENTS REMARK If heavy-duty operation is performed for more than 30 minutes with the fuel control dial between Low idle (MIN) position and High idle (MAX) position, soot is accumulated much and action level monitor “L03” may be displayed. However, this does not indicate abnormality.
  • Page 198 EXPLANATION OF COMPONENTS OPERATION When the degree of emergency is high • If KDPF soot accumulation caution lamp (2) lights up in red (action level (3): L03), screen (D) is displayed. • If the lock lever is set to LOCK position or all the work equipment control levers are set in NEUTRAL, the screen changes to aftertreatment devices regeneration screen (C) after 3 seconds.
  • Page 199 OPERATION EXPLANATION OF COMPONENTS Set the fuel control dial to Low idle (MIN) position. Press switch F6 to display the “Aftertreatment Devices Re- generation” screen. Select manual stationary regeneration, check again that there is no person or combustible material around the machine, then press switch F6.
  • Page 200 EXPLANATION OF COMPONENTS OPERATION REMARK • The explanation of the manual stationary regeneration is displayed in 3 parts on the monitor panel. When switch F6 is pressed, the regeneration can be started immediately, regardless of which part is displayed. When switch F5 is pressed, the screen returns to the standard screen.
  • Page 201 OPERATION EXPLANATION OF COMPONENTS REMARK • You can check the progress of the manual stationary regeneration being done when soot is accumulated by the number of lighting lamps of the soot accumulation level (4). The manual stationary regeneration starts at the soot accumulation level “4”...
  • Page 202 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 203 OPERATION EXPLANATION OF COMPONENTS REMARK • When the regeneration is disabled, the aftertreatment devi- ces regeneration disable pilot lamp (2) is displayed with hatch on the standard screen. • The setting of the regeneration disable is cancelled by turning starting switch to OFF position. When the automat- ic regeneration needs to be kept disabled, perform the above procedure each time you start the engine.
  • Page 204 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 cancelling the regeneration disable, move the machine to a safe place and check that there is no...
  • Page 205 The Komatsu Urea System also monitors recurrences of abnormalities of the system. Inducement in the recur- rences is activated when another abnormality occurs within 40 hours after the first abnormality is fixed. The Komatsu’s Urea is composed of two major systems, which are the DEF system and the SCR catalyst Ass’y. 3-127...
  • Page 206 In addition, it may cause fail- ures in the engine system. If DEF out of the standard is filled or used by mistake, contact your Komatsu dis- tributor. About the operation of Urea SCR system The Urea SCR System automatically starts operating as soon as the engine is started.
  • Page 207 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 208 EXPLANATION OF COMPONENTS OPERATION “SCR Information” screen displays the DEF level caution lamp (1), the DEF level gauge (2), information on the Urea SCR Sys- tem condition (3), and the current status of Inducement (4). If Inducement starts, stop the machine in a safe place and add DEF.
  • Page 209 OPERATION EXPLANATION OF COMPONENTS • Low level Inducement: The audible alert sounds in short and sharp beeps. 1 gradation of the DEF level gauge light up in red. The DEF level caution lamp (1) lights up in red. Action Level “L03” is displayed in red (5). Press F6 to display the “SCR Information”...
  • Page 210 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 211 OPERATION EXPLANATION OF COMPONENTS • Warning: 2 gradations of the DEF level gauge light up in the red range. The DEF level caution lamp (1) lights up in red. No audible alert. No Action level is displayed. Press F6 to display the “SCR Information” screen. Inducement status (4): “1 DEF low level warning appears.”...
  • Page 212 EXPLANATION OF COMPONENTS OPERATION Inducement status (4): “3 Engine power is under deration.” Add DEF to the DEF tank immediately. • Severe Inducement: The audible alert sounds in continuous beep. No gradation of the DEF level gauge lights up. The DEF level caution lamp (1) lights up in red. The Action level “L04”...
  • Page 213 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 214 EXPLANATION OF COMPONENTS OPERATION “SCR Information” screen displays remaining time to the next Inducement status in the column (5), and information on the Urea SCR System condition (3), and the current status of In- ducement (4). • Warning: No audible alert. The DEF system caution lamp (1) lights up in yellow.
  • Page 215 Komatsu distributor. This engine power restoration works only when the Inducement status is “Severe Inducement” and relieves back temporarily to the power deration of “Low level Inducement”.
  • Page 216 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 217 OPERATION EXPLANATION OF COMPONENTS • Warning: No audible alert. The DEF system caution lamp (1) lights up in yellow. Note: Action Level “L01” once shows up in yellow on the machine monitor (2) for 2 seconds and goes out. Press F6 to display the “SCR Information” screen. “SCR Information”...
  • Page 218 Komatsu distributor. This engine power restoration works only when the Inducement status is “Severe Inducement” and relieves back temporarily to the power deration of “Mild Inducement”.
  • Page 219 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 220 EXPLANATION OF COMPONENTS OPERATION “SCR Information” screen displays remaining time to the next Inducement status in the column (6), and information on the Urea SCR System condition (4), and the current status of In- ducement (5). • Warning: The audible alert sounds in short and sharp beeps. The KDPF system caution lamp (1) lights up in red.
  • Page 221 “Temporary Restoration from Inducement [1] EU Stage V)” in this manual. If Inducement advan- ces to “Severe Inducement” and it becomes necessary to restore engine power, use the engine power re- storation function to move the machine to a safe place and contact your Komatsu distributor. 3-143...
  • Page 222 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 223 OPERATION EXPLANATION OF COMPONENTS • Warning: The audible alert sounds in short and sharp beeps. The KDPF system caution lamp (1) lights up in red. The action level “L03” lights up in red at action level dis- play (3). Press F6 to display the “SCR Information” screen. “SCR Information”...
  • Page 224 Stage V)” in this manual. If Inducement advances to “Severe Inducement” and it becomes necessary to re- store engine power, use the engine power restoration function to move the machine to a safe place and contact your Komatsu distributor. •...
  • Page 225 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 226 EXPLANATION OF COMPONENTS OPERATION “SCR Information” screen displays remaining time to the next Inducement status in the column (6), and information on the Urea SCR System condition (4), and the current status of In- ducement (5). • Warning: The audible alert sounds in short and sharp beeps. The Engine system caution lamp (1) lights up in red.
  • Page 227 “Temporary Restoration from Inducement ([1] EU Stage V)” in this manual. If Inducement advan- ces to “Severe Inducement” and it becomes necessary to restore engine power, use the engine power re- storation function to move the machine to a safe place and contact your Komatsu distributor. 3-149...
  • Page 228 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 229 OPERATION EXPLANATION OF COMPONENTS • Warning: The audible alert sounds in short and sharp beeps. The Engine system caution lamp (1) lights up in red. The action level “L03” lights up in red at action level dis- play (3). Press F6 to display the “SCR Information” screen. “SCR Information”...
  • Page 230 Restoration from Inducement ([2 ]EPA + EU Stage V)” in this manual. If Inducement advances to “Severe In- ducement” and it becomes necessary to restore engine power, use the engine power restoration function to move the machine to a safe place and contact your Komatsu distributor. •...
  • Page 231 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 232 EXPLANATION OF COMPONENTS OPERATION Press F6 to display the menu windows popping up in the bottom half of the “SCR Information”. The menu windows popping up in the bottom half of the “SCR Information” screen alternate every 15 seconds as shown in the graphics A and B.
  • Page 233 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 234 EXPLANATION OF COMPONENTS OPERATION allowed, but “Temporary Restoration from Inducement” is turned off whenever the system advances to “Final In- ducement” even if either 30 minutes or 3 operations are not used up. All the abnormalities of the Urea SCR system need to be corrected to regain another restoration capability. If all the abnormalities of the Urea SCR system are not corrected when the system is in “Severe Inducement”, the system advances to “Final Inducement”...
  • Page 235 OPERATION EXPLANATION OF COMPONENTS Press F6 while the “Engine power Recovery” window is displayed. Temporary Restoration from Inducement is activated and engine power deration is relieved to the deration of “Mild Inducement” for the maximum of 30 minutes as long as there is sufficient remaining time to “Final Inducement”.
  • Page 236 Urea SCR systems by utilizing visible and audible alerts, and engine power derate in addition. Alerts in Inducement of the Komatsu Urea SCR sys- tem progresses step by step starting from visual indications on the machine monitor and audible sounds to engine power derate to avoid getting into unsafe conditions.
  • Page 237 The machine information you can check with KOMTRAX includes the following; “Machine position”, “service me- ter”, “working hours”, “fuel consumption”. Your Komatsu distributor uses the above machine information for supply of service to the customers, improve- ment of our products and service, etc.
  • Page 238 For operation of the battery disconnect switch, see “BATTERY DISCONNECT SWITCH (3-114)”. • Contact your Komatsu distributor before installing a top guard or other attachment that covers the cab roof. REMARK The KOMTRAX device uses wireless communications, so it cannot be used inside tunnels, underground, inside buildings, or in mountain areas where radio waves cannot be received.

  • Page 239: Control Levers And Pedals

    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 240: Lock Lever

    • When the viscosity of the hydraulic oil used is higher than that of the genuine hydraulic oils which Komatsu recommends • Before setting the lock lever to FREE position, make sure that all control levers and pedals are set to NEUTRAL position.

  • Page 241: Travel Lever

    To cancel the lock, return the lock lever to LOCK position (L), check that each control lever and the attachment switch are in neutral, and then release the lock lever again. For the genuine hydraulic oils which Komatsu recommends, see “RECOMMENDED FUEL, COOLANT, AND LUBRICANT”. TRAVEL LEVER WARNING •...
  • Page 242 EXPLANATION OF COMPONENTS OPERATION The travel lever is used to change the direction of travel be- tween forward and reverse. ( ) shows the pedal operation. (a) FORWARD The lever is pushed forward (Depress the front side of pedal.) (b) REVERSE The lever is pulled back (Depress the rear side of pedal.) N (NEUTRAL)

  • Page 243: Machine Operations And Controls

    Check carefully, and if any abnormality is found, repair it or contact your Komatsu distributor. Always perform the following inspections and cleaning every day before starting engine for the day's work.

  • Page 244: Refuelling Pump

    12. Check the bucket with hook (if equipped) for damage. Check for damage to the hook, guide, and hook mount. If any problem is found, ask your Komatsu distribu- tor for repair. 13. Check and clean the camera Check the camera lens for dirt.
  • Page 245 When not in use, fully close the hose strainer valve cap to prevent leakage or spillage. If there is any malfunction of the refuel automatic shut-off system, consult your Komatsu distributor and do not use the system until the problem is rectified.
  • Page 246 MACHINE OPERATIONS AND CONTROLS OPERATION Refuel Pump with Auto Shut-off Refuel System Refuel switch box (1) is located on the right hand side cooling package compartment at the rear of the machine. Switch ON the master switch of the refuel system (4) on the refuel switch box.
  • Page 247 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR DRAINING WATER AND SEDIMENT FROM FUEL TANK Prepare a container under drain hose to receive fuel. Turn drain valve (1) to OPEN position (O) and drain all the sediment and water accumulated at the bottom together with fuel.
  • Page 248 MACHINE OPERATIONS AND CONTROLS OPERATION Loosen drain valve (4) to drain water and sediments from transparent cup (2), and also drain all the fuel from filter cartridge (1). Check that nothing more comes out from drain hose (3), then remove drain valve (4). Apply a suitable amount of grease to O-ring (7).
  • Page 249 OPERATION MACHINE OPERATIONS AND CONTROLS Open the door on the left side of the machine and check sight gauge (G). When the oil level is between the lines H and L, it is appro- priate. If the oil level is below level L, the hydraulic oil is insuffi- cient.
  • Page 250 MACHINE OPERATIONS AND CONTROLS OPERATION Rotate the oil filler cap clockwise, and lock it with the key. The ▲ mark on the oil filler cap matches with the key mark on the tank. METHOD FOR CHECKING COOLANT LEVEL, ADDING COOLANT WARNING •...
  • Page 251 OPERATION MACHINE OPERATIONS AND CONTROLS NOTICE Refilling and draining function of the radiator cap (2) may be faulty if coolant level in the reservoir tank is obviously above FULL level all the time before the en- gine is started (coolant temperature is low). Replace the radiator cap (2) by referring to “METHOD FOR RE- PLACING RADIATOR CAP”.
  • Page 252 • 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 253 OPERATION MACHINE OPERATIONS AND CONTROLS Turn the starting switch to ON position. When the fuel level caution lamp lights up in red, check the fuel level with fuel level gauge (1) on the monitor panel. When the fuel gauge pointer reads the red range, the fuel quantity is 76 ℓ...
  • Page 254 If you add fluid other than DEF (diesel fuel, low concentration DEF, etc.) by mistake, the caution lamp lights up and the audible alert sounds to warn the abnormality. In this case, ask your Komatsu distributor for draining of the wrong fluid and for inspection. DEF injector and/or DEF pump may need to be replaced.
  • Page 255 OPERATION MACHINE OPERATIONS AND CONTROLS After checking, turn the starting switch back to OFF posi- tion (A). Open up cover (2) at the right side of the machine, clean blue DEF tank filler cap (3) and surrounding area. Turn the cap (3) counterclockwise. The caps of DEF tanks are blue, as required by emission regulations.
  • Page 256 After checking, turn the starting switch back to OFF posi- tion. If the lamps do not light up, a broken bulb or disconnected wire are the possible causes. Ask your Komatsu distributor for repairs. METHOD FOR CHECKING HORN Turn the starting switch to ON position.
  • Page 257 OPERATION MACHINE OPERATIONS AND CONTROLS NOTICE If the seat position is adjusted while the parts, tools, or empty cans are left around the operator's seat, the peripheral parts or operator's seat may be damaged. Check that there is no parts etc., around the operator's seat, and adjust the seat position. •...

  • Page 258: Adjust Seat Height

    MACHINE OPERATIONS AND CONTROLS OPERATION ADJUST SEAT HEIGHT Pull up the adjustment lever (1), move the seat rearward (A), and operate the switch (2) to adjust the height. • It rises when you pull the switch (2). • It lowers when you push the switch (2). Adjust it to let the weight adjustment indicator (3) go in the green range.
  • Page 259 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR ADJUSTING ARMREST ANGLE Angle of the armrest can be adjusted vertically by turning ad- justment dial (7) at the bottom of the armrest (5). Angle adjustment: 9 ° in lower direction, 4 ° in upper direction METHOD FOR ADJUSTING SEAT UNIT IN FORE-AND-AFT DIRECTION Operate the fore-aft adjustment lever (8) to the right, and set the seat to the desired position, then let go of the lever.
  • Page 260 MACHINE OPERATIONS AND CONTROLS OPERATION CAUTION • Do not use it in the following cases to prevent low temperature burn or excessive cooling. • When a person's ability to perceive the tempera- ture is decreased • When a person's ability to feel pain is decreased •...
  • Page 261 NOTICE The premium seat is protected by two 10 Amp in-line fuses located in the rear of the suspension unit. If there is any malfunction of the premium seat consult your Komatsu distributor. • Always adjust the operator's seat before starting each op- eration or when the operators change shift.
  • Page 262 MACHINE OPERATIONS AND CONTROLS OPERATION • To raise the front of the seat, apply your weight to the rear of the seat, while pulling up lever. • To lower the front of the seat, apply your weight to the front of the seat, while pulling up lever.
  • Page 263 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR REMOVING AND INSTALLING HEADREST METHOD FOR REMOVING HEADREST When the headrest is not necessary, remove it according to the following procedure. Pull up the headrest 120 mm or more. The headrest is pulled out. NOTICE When removing the headrest, operate it so that the shaft of the headrest becomes straight.
  • Page 264 MACHINE OPERATIONS AND CONTROLS OPERATION Horizontal suspension unlock NOTICE Horizontal suspension should be locked on HRD ma- chines with tilting cab before raising the cab. METHOD FOR ADJUSTING SEAT DEPTH To adjust the depth of the seat cushion lift the right hand handle (9), move the seat forwards or backwards, when the desired seat depth is set release the handle.
  • Page 265 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR ADJUSTING LUMBER SUPPORT The profile of the backrest can be adjusted by pressing upper and lower switches (11). METHOD FOR ADJUSTING MIRRORS WARNING Be sure to adjust the mirrors before starting work. If they are not adjusted properly, you cannot secure the visibility and may be injured or may lead to a serious personal injury or death.
  • Page 266 MACHINE OPERATIONS AND CONTROLS OPERATION Adjust the mirror with your hand so that the side of the ma- chine is reflected in the mirror as shown in the figure. Check that you can see a person at the rear left end of the machine, at a 1.2 m height and a distance of 1.0 m from the edge of the machine.
  • Page 267 OPERATION MACHINE OPERATIONS AND CONTROLS When returning the mirror to its regular position, perform the following adjustment. Adjust stay (1). Mounting position (2): 69 mm Mounting angle (3): 81 ° Mounting angle (4): 110 ° Adjust mirror (5). Tightening torque of mounting bolt (6): 6.0 to 7.0 Nm {0.61 to 0.71 kgfm} Mounting position (7): 74 mm NOTICE...
  • Page 268 MACHINE OPERATIONS AND CONTROLS OPERATION Adjust the mirror so that the side of the machine is reflec- ted in the mirror as shown in the figure. PROCEDURE FOR ADJUSTING MACHINE RIGHT FRONT MIRROR (B) CAUTION To prevent the machine from moving during the work, make sure that the following conditions are met before starting the work.
  • Page 269 OPERATION MACHINE OPERATIONS AND CONTROLS If the mirror is adjusted by loosening the mounting bolts, be sure to adjust the mirror to its regular position. For the adjustment method, see the “PROCEDURE FOR ADJUSTING REGULAR POSITION OF MACHINE RIGHT FRONT MIRROR (B)”. PROCEDURE FOR ADJUSTING REGULAR POSITION OF MACHINE RIGHT FRONT MIRROR (B) CAUTION...
  • Page 270 MACHINE OPERATIONS AND CONTROLS OPERATION Adjust the mirror so that the side of the machine is reflected in the mirror as shown in the figure. PROCEDURE FOR ADJUSTING MACHINE RIGHT SIDE MIRROR (C) CAUTION To prevent the machine from moving during the work, make sure that the following conditions are met before starting the work.
  • Page 271 OPERATION MACHINE OPERATIONS AND CONTROLS • The regular position of the mirror is as follows: Adjust mirror (1). Tightening torque of mounting bolt (2): 6.0 to 7.0 Nm {0.61 to 0.71 kgfm} Mounting angle (3): 15 ° Mounting position (4): 15 mm METHOD FOR FASTENING AND UNFASTENING SEAT BELT WARNING •...
  • Page 272 MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR FASTENING SEAT BELT Hold grip (2) and pull out the belt from retractable device (1). Check that the belt is not twisted, and then inset tongue (3) into buckle (4) securely. Pull the belt lightly to check that it is properly locked. METHOD FOR UNFASTENING SEAT BELT Press button (5) in buckle (4) and remove tongue (3) from buckle (4).
  • Page 273 F6 (3). If a password is set, the input display screen will be indica- ted on the monitor screen. REMARK Contact your Komatsu distributor for details of the method of setting, changing, or cancelling the password. 3-195...
  • Page 274 If any caution lamp does not light up or the buzzer does not sound, there is probably a failure in the caution lamp, so ask your Komatsu distributor for repair. After approximately 2 seconds, the screen changes to the working mode/travel speed display. Then, it will switch to the standard screen.

  • Page 275: Method For Starting Engine

    OPERATION MACHINE OPERATIONS AND CONTROLS If the maintenance due time has passed for certain items, maintenance time caution lamp (18) is lit in red for 30 sec- onds. Press switch F6 to check the item, and perform maintenance immediately. For details of the method of checking the maintenance in- terval, see “MAINTENANCE SCREEN SETTING”...
  • Page 276 MACHINE OPERATIONS AND CONTROLS OPERATION Check that lock lever (1) is at LOCK position (L). If lock lever (1) is in FREE position (F), the engine does not start. Turn fuel control dial (2) to Low idle (MIN) position. Turn the key in starting switch (3) to ON position (B). REMARK If the ambient temperature is low, the preheating pilot lamp lights up and automatic preheating is performed.
  • Page 277 OPERATION MACHINE OPERATIONS AND CONTROLS REMARK When the engine is started, the battery voltage may sud- denly drop depending on the temperature and the battery condition. If this happens, the display on the machine mon- itor may momentarily go out, but this does not indicate any abnormality.
  • Page 278 MACHINE OPERATIONS AND CONTROLS OPERATION After the preheating pilot lamp goes out, turn the key of starting switch (3) to START position (C). The engine starts. If the engine cannot be started with the above procedure, wait for approximately 2 minutes, then start again from step 1.

  • Page 279: 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. 3-201...
  • Page 280 In that case, ask your Komatsu distributor to check the engine as soon as possible.
  • Page 281 OPERATION MACHINE OPERATIONS AND CONTROLS Check that engine coolant temperature caution lamp (1) displays the proper temperature. If it displays low temperature, perform additional warm-up of the engine according to step 2 until it displays the prop- er temperature. • Display (A) when temperature is proper: Caution lamp background (C) is blue.
  • Page 282 MACHINE OPERATIONS AND CONTROLS OPERATION Turn fuel control dial (2) to High idle (MAX) position and hold it for 3 seconds or more. Turn fuel control dial (2) to Low idle (MIN) position. The engine automatic warm-up is cancelled, and the en- gine speed is lowered.
  • Page 283 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR HYDRAULIC SYSTEM WARM-UP OPERATION WARNING • Before performing the warm-up operation for the hy- draulic equipment, set the swing lock switch on, check on the monitor that the swing lock is actuated, then start the warm-up operation.
  • Page 284 MACHINE OPERATIONS AND CONTROLS OPERATION Set the working mode to P mode (heavy-duty operation mode). The hydraulic component is warmed up quickly. For the details of the working mode setting procedure, see “WORKING MODE SELECTOR SWITCH”. Move lock lever (3) slowly to FREE position (F), then raise the bucket from the ground.
  • Page 285 Hydraulic oil temperature gauge (17): Indicator in green range • Fuel level caution lamp (18): Displays appropriate lev- • Fuel gauge (19): Indicator in green range 11. Check for abnormal exhaust gas colour, noise, or vibration. If any problem is found, contact your Komatsu distributor. 3-207...
  • Page 286 MACHINE OPERATIONS AND CONTROLS OPERATION NOTICE In cold temperatures (ambient temperature below 0°C ), even when the hydraulic oil temperature caution lamp displays the proper temperature, perform the “Hydraulic system warm-up operation in cold weath- er” to warm up all the hydraulic equipment. 12.
  • Page 287 OPERATION MACHINE OPERATIONS AND CONTROLS When performing swing operations, release swing lock switch (2), check that swing lock pilot lamp (20) is not lit, then operate the swing. • Travel (Lo) operation: FORWARD (A) ←→ REVERSE • For attachment operations (if equipped), change the working mode to the attachment mode.
  • Page 288 MACHINE OPERATIONS AND CONTROLS OPERATION • Display (A) when temperature is proper: Caution lamp background (C) is blue. • Display (B) when temperature is low: Caution lamp background (C) is white. If the hydraulic oil temperature caution lamp displays the proper temperature, the hydraulic equipment warm-up operation is completed.

  • Page 289: Method For Stopping Engine

    OPERATION MACHINE OPERATIONS AND CONTROLS Display of working mode P mode E mode For heavy-duty operations For fuel economy conscious operations L mode B mode For operations requiring fine control and lifting operations For breaker operations ATT/P mode ATT/E mode For operations of 2-way attachments like crusher For operations of 2-way attachments like crusher (fuel economy conscious operations)
  • Page 290 MACHINE OPERATIONS AND CONTROLS OPERATION NOTICE If the engine is stopped abruptly, the service lives of com- ponent parts of the engine may be considerably reduced. Do not stop the engine abruptly except in an emergency. Do not stop the engine abruptly except the case in an emergency.
  • Page 291 OPERATION MACHINE OPERATIONS AND CONTROLS REMARK • When engine starting switch (1) is turned to OFF (A) position, the engine stops, but the machine's main power supply is not turned off immediately. This is a time lag provided for the controller to memo- rize the operation status and then terminate the sys- tem.

  • Page 292: Method For Starting Machine (Travel Forward And Reverse) And Stopping Machine

    MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR STARTING MACHINE (TRAVEL FORWARD AND REVERSE) AND STOPPING MACHINE WARNING • Before operating the travel levers or travel pedals, check the direction of the track frame. If the track frame is facing the rear (if the sprocket is at the front), the machine moves in the opposite direction to the direction of the operation of the travel levers or travel pedals (front and rear travel are reversed, right...
  • Page 293 (6) slowly. When travelling, check that the alarm sounds normally. If the travel alarm does not sound, ask your Komatsu distributor for repair. REMARK In low temperatures, if the machine travel speed is not normal, thoroughly perform the warm-up operation.
  • Page 294 (6) slowly. When travelling, check that the alarm sounds normally. If the travel alarm does not sound, contact your Komatsu distributor for repair. REMARK In low temperatures, if the machine travel speed is not normal, thoroughly perform the warm-up operation.

  • Page 295: Method For Steering Machine

    OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR STEERING MACHINE METHOD FOR STEERING (CHANGE THE DIRECTION) MACHINE WARNING Before operating the travel levers or travel pedals, check the direction that the track frame is facing (the position of the sprocket). When the sprocket is at the front, the directions of operations of the travel levers or control pedals are the opposite to the direction of movement of the machine.
  • Page 296 MACHINE OPERATIONS AND CONTROLS OPERATION • (A): Forward left turn Return the left travel lever from FORWARD to NEUTRAL position. The machine turns forward LEFT. • (B): Reverse left turn Return the left travel lever from REVERSE to NEUTRAL position. The machine turns in reverse LEFT.

  • Page 297: Method For Swinging Machine

    OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR SWINGING MACHINE WARNING • The tail of the machine extends outside the tracks. Check that there is no one around the machine before operating the swing. • If the travel levers are operated when the engine speed is decreased by the auto-deceleration function, the en- gine speed will suddenly increase.

  • Page 298: Method For Operating Work Equipment

    MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR OPERATING WORK EQUIPMENT WARNING If the levers are operated when the engine speed is decreased by the auto-deceleration function, the en- gine speed will suddenly increase. Operate the levers carefully. When you operate work equipment control lever, the screen will switch to the screen including bird's eye view automatically.

  • Page 299: Handle Working Mode

    OPERATION MACHINE OPERATIONS AND CONTROLS If the work equipment control levers are returned to NEUTRAL position when the machine is stopped, even if the fuel control dial is set to High idle (MAX) position, the auto-deceleration mechanism works to reduce the engine speed to the low speed.
  • Page 300 MACHINE OPERATIONS AND CONTROLS OPERATION Press working mode selector switch (1). The screen changes to the working mode selection screen. Press working mode selector switch (1) or function switch F3 or F4 to select the appropriate mode. After selecting the desired mode, press function switch F6 to accept the change.

  • Page 301: Prohibited Operations

    OPERATION MACHINE OPERATIONS AND CONTROLS Press the L.H. knob switch once and keep it pressed. The operating power increases as long as the switch is press- REMARK However, the increased power is automatically stopped after 8.5 seconds. This function is not actuated when the working mode is set to L mode or B mode.
  • Page 302 MACHINE OPERATIONS AND CONTROLS OPERATION PROHIBITION OF OPERATIONS USING HYDRAULIC CYLINDERS TO STROKE If the work equipment is used with the cylinder rod operated to its stroke end, and given impact by some external force, the hy- draulic cylinders may be damaged, causing personal injury. Do not perform operations with the hydraulic cylinder fully retracted or fully extended.
  • Page 303 OPERATION MACHINE OPERATIONS AND CONTROLS PROHIBITION OF OPERATIONS USING MACHINE DROPPING FORCE Do not use the dropping force of the machine for digging. PROHIBITION OF DIGGING OPERATION AT AN ANGLE WITHOUT ENGAGING TEETH If the machine swings and digs simultaneously while the bucket blade does not bite into hard rocks at a position higher than the machine, the teeth slide down on the rock surfaces.
  • Page 304 MACHINE OPERATIONS AND CONTROLS OPERATION PROHIBITION OF OPERATIONS WHEN MACHINE IS NOT STABLE If the machine is operated while its undercarriage is unstable, torsional loads occur in the frames and can shorten the service life of the machine. In this case, prepare an embankment, etc. in front of the track to stabilize the machine.

  • Page 305: Precautions For Operation

    OPERATION MACHINE OPERATIONS AND CONTROLS PROHIBITION OF HIGH-SPEED TRAVEL OPERATIONS ON ROUGH GROUND If the machine travels on rough ground (rock-bed, etc.) at high speed, large push-up loads are applied to the chassis, thus the service life of the chassis is shortened. When driving on rough ground (rock-bed, etc.), direct the idler (1) having the cushion mechanism in the travel direction and drive the machine at low speed.
  • Page 306 MACHINE OPERATIONS AND CONTROLS OPERATION PRECAUTIONS FOR HIGH SPEED TRAVEL On uneven roadbeds such as rock beds or uneven roads with large rocks, drive the machine at Lo-speed. When driving the machine at Hi-speed, set the idler in the forward direction. •...

  • Page 307: Precautions For Working On Slope

    OPERATION MACHINE OPERATIONS AND CONTROLS PRECAUTIONS FOR WORKING ON SLOPE WARNING • Swinging operations or operating the work equipment on slopes machine may lose its balance and turn over. Avoid such operations as much as possible. It is particularly dangerous to swing downhill when the bucket is loaded.

  • Page 308: Method For Escaping From Mud

    MACHINE OPERATIONS AND CONTROLS OPERATION When travelling up a steep hill of more than 15°, set the work equipment to the posture shown in the figure. When travelling up a steep slope, extend the work equip- ment to the front to improve the balance, keep the work equipment approximately 20 to 30 cm above the ground, and travel at low speed.

  • Page 309: Recommended Applications

    OPERATION MACHINE OPERATIONS AND CONTROLS Track on one side stuck NOTICE When using the boom or arm to raise the machine, push the ground by using the bottom of the bucket. At this time, set the angle between the boom and the arm at 90°...

  • Page 310: Shovel Work

    MACHINE OPERATIONS AND CONTROLS OPERATION The range for excavating with the arm is from a 45 ° angle away from the machine to a 30 ° angle towards the machine. There may be some differences depending on the excavation depth, but try to stay within the above range rather than operat- ing the cylinder to the end of its stroke.

  • Page 311: Method For Replacing And Inverting Bucket

    • Travelling at low engine speed We can provide our users the training for operating methods to increase the productivity and to reduce the fuel consumption. Contact your Komatsu distributor for details. METHOD FOR REPLACING AND INVERTING BUCKET WARNING •...
  • Page 312 MACHINE OPERATIONS AND CONTROLS OPERATION Remove the double nuts on the stopper bolt for arm pin (A) and link pin (B), remove the bolt, pull out arm pin (A) and link pin (B), and then remove the bucket. Align the pin hole of arm (1) with replacement bucket hole (2), then align the pin hole of link (3) with hole (4), and install pins (A) and (B) which are coated with grease.
  • Page 313 OPERATION MACHINE OPERATIONS AND CONTROLS REMARK When removing the pins, place the bucket so that it is in light contact with the ground. If the bucket is lowered strongly to the ground, the resistance will be increased and it will be difficult to re- move the pins.
  • Page 314 MACHINE OPERATIONS AND CONTROLS OPERATION Align the pin hole of arm (1) with replacement bucket hole (2), then align the pin hole of link (3) with hole (4), and in- stall pins (A) and (B) which are coated with grease. REMARK When inverting, do not install O-rings.

  • Page 315: Method For Parking Machine

    OPERATION MACHINE OPERATIONS AND CONTROLS Grease metering valve for standard machines. METHOD FOR PARKING MACHINE WARNING • Avoid a sudden stop. Stop the machine gradually. • Place the machine on a firm and level place. Do not park the machine on a slope. If it is unavoidably necessary to park the machine on a slope, block the tracks from movement.
  • Page 316 MACHINE OPERATIONS AND CONTROLS OPERATION Put right and left travel levers (1) in NEUTRAL position. The machine stops. Turn fuel control dial (2) to Low idle (MIN) position and lower the engine speed. Make the undercarriage and upper structure point to the same direction, and lower the bucket to the ground with its bottom face horizontal.

  • Page 317: Method For Checking After Finishing Work

    OPERATION MACHINE OPERATIONS AND CONTROLS Check the engine coolant temperature and engine oil pres- sure with the machine monitor. • If the engine coolant temperature gauge is in the red range, cool down the coolant until the gauge enters the green range, and stop the engine. Then, inspect and take necessary remedy according to “TROUBLES AND ACTIONS”.
  • Page 318 MACHINE OPERATIONS AND CONTROLS OPERATION Turn the key clockwise, align the matching marks (1) of the key groove and the cap, then open the cap. Position (A): OPEN Position (B): CLOSE (LOCK) PROCEDURE FOR CLOSING CAP WITH LOCK Screw in the cap until it becomes tight, then insert the key into the key slot. Turn the starting switch key to CLOSE position (B), then remove the key.
  • Page 319 OPERATION MACHINE OPERATIONS AND CONTROLS METHOD FOR OPENING AND CLOSING ENGINE HOOD CAUTION • When opening or closing the engine hood, place the machine on a level ground, lower the work equipment to the ground, stop the engine, then perform the operation. •...
  • Page 320 MACHINE OPERATIONS AND CONTROLS OPERATION METHOD FOR OPENING AND CLOSING DEF TANK FILLER CAP COVER CAUTION • When opening or closing the DEF tank filler cap cover, place the machine on a level place, lower the work equipment to the ground, stop the engine, then perform the operation. •...
  • Page 321 OPERATION MACHINE OPERATIONS AND CONTROLS Set stay (3) securely in position (4) to lock it. METHOD FOR LOCKING DEF TANK FILLER CAP COVER Pull stay (3) toward you and unlock the stay. Lower the cover. Turn the key clockwise to lock, and remove it. Position (A): OPEN Position (B): CLOSE (LOCK) METHOD FOR OPENING AND CLOSING CAB DOOR...
  • Page 322 MACHINE OPERATIONS AND CONTROLS OPERATION Position (B): CLOSE (LOCK) When locking the door Close the door and insert the key into the key slot. Turn the starting switch key to CLOSE position (B), then remove the key. 3-244...

  • Page 323: 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 inspec- tion and repair. Ventilation •...

  • Page 324: Explanation Of Air Conditioner Equipment

    HANDLE AIR CONDITIONER OPERATION EXPLANATION OF AIR CONDITIONER EQUIPMENT (1) OFF switch (6) FRESH/RECIRC air selector switch (2) Fan switch (7) Display monitor (3) Temperature control switch (8) Air conditioner switch (4) Vent selector switch (9) Sunlight sensor (5) Auto switch OFF SWITCH This switch is used for stopping the fan and air conditioner.
  • Page 325 OPERATION HANDLE AIR CONDITIONER 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 326 HANDLE AIR CONDITIONER OPERATION VENT SELECTOR SWITCH The vent selector switch is used to select the vents. • When vent selector switch is pressed, the LC display on the monitor display switches and air blows out from the vents displayed. •...

  • Page 327: Auto Switch

    OPERATION HANDLE AIR CONDITIONER 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 328: Sunlight Sensor

    HANDLE AIR CONDITIONER OPERATION When OFF switch (1) is pressed, the display of temperature setting (a) and air flow rate (b) go out, and operation stops. AIR CONDITIONER SWITCH Use air conditioner switch for turning the air conditioner (cool- ing, dry heating) ON or OFF. •...
  • Page 329 OPERATION HANDLE AIR CONDITIONER METHOD FOR AUTOMATIC OPERATION Turn auto switch (1) ON. 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 330 HANDLE AIR CONDITIONER OPERATION METHOD FOR STOPPING AUTOMATIC OPERATION Press OFF switch (1). The air conditioner stops. METHOD FOR MANUAL OPERATION Press fan switch (1) and adjust the air flow. 3-252...
  • Page 331 OPERATION HANDLE AIR CONDITIONER 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. 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.
  • Page 332 HANDLE AIR CONDITIONER OPERATION Press FRESH/RECIRC air selector switch (5) and select recirculation of the air inside the cab (RECIRC) or intake of fresh air from outside (FRESH). METHOD FOR STOPPING MANUAL OPERATION Press OFF switch (1). The air conditioner stops. 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.
  • Page 333 OPERATION HANDLE AIR CONDITIONER 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 (2) and set the vent display on the monitor to the display shown in the figure.
  • Page 334 HANDLE AIR CONDITIONER OPERATION Adjust fan switch (1), temperature control switch (4) and FRESH/RECIRC selector switch (5) to the desired posi- tions. METHOD FOR OPERATING DEFROSTER Press fan switch (1) and adjust the air flow. 3-256...
  • Page 335 OPERATION HANDLE AIR CONDITIONER When doing this, check that temperature setting (a) and air flow (b) are displayed on the monitor. Press vent selector switch (2) and set vent display on the monitor to (f) or (g) as shown in drawing. Press FRESH/RECIRC selector switch (3) and set it to FRESH mode.
  • Page 336 HANDLE AIR CONDITIONER OPERATION (Vents (C) and (D) are fixed and cannot be adjusted.) 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 on the air conditioner switch (5). 3-258...

  • Page 337: Handling Radio

    OPERATION HANDLING RADIO HANDLING 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 338: Preset Button

    HANDLING RADIO OPERATION PRESET BUTTON If you register desired stations to the preset button beforehand, you can select each station by touching this but- ton once. It is possible to preset 6 stations each for both AM and FM. For the presetting method, see “METHOD FOR CONTROLLING RADIO (3-261)”. DISPLAY SELECTOR BUTTON Use the display selector button to change frequency and clock shown on the display.

  • Page 339: Method For Controlling Radio

    OPERATION HANDLING RADIO Open cap (a). Connect a portable audio equipment by using a commer- cially available audio cable. Press band/AUX selector button (1) to 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 340 HANDLING RADIO OPERATION METHOD FOR ADJUSTING FREQUENCY (AUTO PRESETTING) Press band/AUX selector button (1) and select FM or AM. Hold down sound control button (2). When a proper frequency is picked up, it is automatically registered to preset memories 1 to 6. METHOD FOR CALLING PRESET Press band/AUX selector button (1) and select FM or AM.
  • Page 341 OPERATION HANDLING RADIO METHOD FOR ADJUSTING SOUND BALANCE Press sound control button (1) to light up “BAL” on the dis- play. You can adjust the sound (balance). Press tuning/time adjustment button (2) to adjust the sound (balance). Press the △ button, and the speaker output on the R •...

  • Page 342: Stow Antenna

    The radio cassette is not factory fitted. If fitment is required: Remove front cover (1) . Connect speakers and aerial to radio cassette. Please contact your Komatsu distributor for a fitting instruction. REMARK If radio is fitted in this location, do not operate radio in LH con- sole.

  • Page 343: Komvision

    • If the normal range cannot be confirmed in the confirmation of the camera visibility, it is necessary to adjust the monitor screen. Ask your Komatsu distributor to perform this work. • The machine monitor image may not be displayed due to darkness at night or in a tunnel, fog, snow, rain, cloud of dust, etc.
  • Page 344 KomVision OPERATION KomVision synthesizes the images of 4 cameras. The bird's eye view display covers the view of 300 °. The shaded area in the figure is not displayed on the monitor screen even if the camera images are synthesized. Since this image is electronically synthesized, the objects in the image may be displayed double or distortions or misalignment may occur in the shaded areas of the back of the machine (A) and (B) and the right of the machine (C).

  • Page 345: Transportation

    Note that the weight and dimension given in “SPECIFICATIONS” (weight and dimension) may differ accord- ing to the type of track shoe or arm, or other attachments. • Consult your Komatsu distributor for details of the procedure for transporting machines with a protective guard installed for the operator's cab. •...

  • Page 346: Loading And Unloading With Trailer

    TRANSPORTATION OPERATION LOADING AND UNLOADING WITH TRAILER PRECAUTIONS FOR LOADING AND UNLOADING WITH TRAILER WARNING Always observe the following when loading or unloading the machine from a trailer. • Select the firm, level ground when loading or unload- ing the machine. Maintain a safe distance from the road shoulder •...
  • Page 347 OPERATION TRANSPORTATION PROCEDURES FOR LOADING MACHINE Load on a firm and level ground. Maintain a safe distance from the road shoulder Apply the brake of the trailer securely. Set chocks (1) to the wheels to secure the trailer. Set right and left ramps (2) parallel to each other and equally spaced to the right and left of centre (3) of the trail- er.
  • Page 348 TRANSPORTATION OPERATION If the machine is equipped with work equipment, set the work equipment at the front, and travel forward to load it; if it has no work equipment, travel in reverse to load it. Follow instructions and signals of a conductor particularly when travelling in reverse.
  • Page 349 OPERATION TRANSPORTATION 13. Drive the machine slowly in reverse to load it onto the trail- When the machine travels over the rear wheels of the trail- er, it becomes unstable. Drive the machine carefully and slowly. (Never operate the steering.) When the machine passes over the rear wheels, it inclines backward.
  • Page 350 TRANSPORTATION OPERATION METHOD FOR SECURING MACHINE WITH TIE-DOWN POINT Tie one end of each chain or wire rope of appropriate strength to the tie-down holes (1) on the track frame. X: 50 to 100 mm (Keep the chains off the track frame.) METHOD FOR SECURING MACHINE WITHOUT TIE-DOWN POINT Place blocks under both ends of the tracks to prevent the ma- chine from moving during transportation, and secure the ma-...
  • Page 351 OPERATION TRANSPORTATION After installation of mirror, always adjust it. For details, see “METHOD FOR ADJUSTING MIRRORS”. METHOD FOR REMOVING MIRROR Mirrors (A), (B) Loosen mounting bolt (2), then remove mirror (1) from sup- port (3). Loosen bolt (4) and remove support (3) and clamp (5) from the handrail.
  • Page 352 TRANSPORTATION OPERATION Install mirror (1) to support (3), then tighten it with lock bolt (2). METHOD FOR REMOVING AND INSTALLING HANDRAIL WARNING • After the machine is transported, be sure to install the handrails before inspection and mainte- nance. • Use the crane, etc.
  • Page 353 OPERATION TRANSPORTATION Remove bolts (3), then remove handrail (B), cover (4), and plate (5). METHOD FOR INSTALLING HANDRAIL When performing the installation, install handrail (B) first. Install handrail (B), cover (4) and plate (5), then tighten them with bolts (3). Install handrail (A) and cover (2), then tighten them with bolts (1).
  • Page 354 TRANSPORTATION OPERATION Release lock (D) of bracket (C) of the revolving warning lamp to remove it by shifting from claw (F) of mounting por- tion (E). REMARK When removing and installing the revolving warning lamp, be sure to hold grip (G) instead of lamp itself to prevent damage.
  • Page 355 OPERATION TRANSPORTATION Operate the operating portion (g) of the lock lever to set it securely to FREE position (F). Push travel speed selector switch (5) to set the travel speed to low (Lo lights up). The travel speed (Lo, Mi, Hi) is displayed on travel speed display (6).

  • Page 356: Method For Lifting Machine

    TRANSPORTATION OPERATION 12. Lower the bucket to the ground. NOTICE Do not hit the bucket against the ground to prevent damage to the hydraulic cylinders. 13. With the bucket lowered to the ground, move to the ramps slowly from the rear end of the trailer. 14.

  • Page 357: Spread And Narrow Track Frame Gauge

    OPERATION TRANSPORTATION Set the lock lever securely to LOCK position (L). Stop the engine. Check that there is nothing around the operator's seat, and then get off the machine. Close the cab door and front window securely. Pass wire ropes between the 1st and 2nd track rollers from the front and between the 1st and 2nd track rollers from the rear.
  • Page 358 TRANSPORTATION OPERATION Remove centre frame mounting bolts (1) (9 pieces each on the front and rear side) on one side. Swing the upper structure to a right angle to track frame (2) to be moved in. Connect track frames (2) and (3) on right and left sides with chain block (4).
  • Page 359 OPERATION TRANSPORTATION Swing the upper structure to a right angle to track frame (2) to be moved out. Connect bucket (3) and track frame (2) to be moved out by chain block (4). Raise track frame (2) to be moved out by using the work equipment.

  • Page 360: Cold Weather Operation

    If DEF or the machine equipped with DEF system cannot be stored at the outside temperature is lower than –11 °C, DEF in the tank may freeze. Ask your Komatsu distributor for discharging of DEF, and keep it in the condition free from freezing.

  • Page 361: Precautions After Daily Work Completion In Cold Weather

    OPERATION COLD WEATHER OPERATION When the ambient temperature drops, the capacity of the battery will also drop. Maintain the battery charging rate as close as possible to 100%. Insulate it against cold temperature to ensure that the machine can be star- ted easily in the next morning.

  • Page 362: After Cold Weather Season

    Replace the fuel and oil for all equipment with the ones of the specified viscosity. For details, see RECOMMEN- DED FUEL, COOLANT AND LUBRICANT. If the machine is parked for long time in the cold weather condition, quality of DEF may be affected by repeated freeze, ask your Komatsu distributor to inspect. 3-284...

  • Page 363: Precautions For Long-Term Storage

    Always run the engine at low idle when doing this. In addition, check the refrigerant level twice a year. 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. 3-285...
  • Page 364 If SCR system still has abnormality after the engine is restarted, contact your Komatsu distributor. • If DEF is kept in DEF tank for more than 1 year, ask your Komatsu distributor for replacement. Dispose of drained DEF according to the local regulations and rules.

  • Page 365: Troubles And Actions

    OPERATION TROUBLES AND ACTIONS TROUBLES AND ACTIONS ACTIONS WHEN RUNNING OUT OF FUEL When starting the engine again after running out of fuel, fill it up with fuel and bleed air from the fuel system before stating. Always check the fuel level to prevent running out of fuel. If the engine has stopped because of running out of fuel, all the air in the fuel circuit must be bled by using the fuel feed pump.

  • Page 366: Phenomena That Are Not Failures

    TROUBLES AND ACTIONS OPERATION After the engine starts, run it for approximately 5 minutes to bleed all air from the fuel circuit. After approximately 5 minutes, stop the engine. Then, start the engine as usual. PHENOMENA THAT ARE NOT FAILURES Note that the following phenomena are not failures: •...

  • Page 367: Precautions For Severe Job Condition

    OPERATION TROUBLES AND ACTIONS NOTICE The maximum towing capacity for this machine is 303030N {30900kgf}. Do not tow any load greater than this. • If the machine sinks in mud and cannot get out under its own power, or if the machine tows a heavy object, use a wire rope as shown in the figure on the right.

  • Page 368: 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 369 OPERATION TROUBLES AND ACTIONS • Tightening torque of battery terminal fixing nut (A): 9.8 to 11.8 Nm {1.0 to 1.2 kgfm} • When replacing the battery, secure it with the battery hold- down fittings. Tightening torque of mounting bolt (B): 9.8 to 19.6 Nm {1.0 to 2.0 kgfm} PRECAUTIONS FOR CHARGING BATTERY WARNING...
  • Page 370 TROUBLES AND ACTIONS OPERATION 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 371: 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 372 PHENOMENA AND ACTIONS FOR CHASSIS • 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 373 PHENOMENA AND ACTIONS FOR ENGINE RELATED PARTS • 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 374 TROUBLES AND ACTIONS OPERATION Problem Main causes Remedy Radiator coolant level caution lamp Lowered coolant level, leakage of Check, add coolant, repair. See lights up. coolant CHECKS BEFORE STARTING. Dirt or scale accumulated in cooling Change coolant, flush inside of cool- system ing system.
  • Page 375 For details of replacement, see “METHOD FOR REPLACING FUEL PRE-FILTER CARTRIDGE” and “METHOD FOR REPLACING FUEL MAIN FILTER CARTRIDGE”. If “CA2249” or “CA559” does not disappear even after the replacement, ask your Komatsu distributor for inspection immediately, even though the machine can perform normal operation.

  • Page 377: Maintenance

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

  • Page 378: 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 379: Precautions For Kdpf

    MAINTENANCE PRECAUTIONS FOR MAINTENANCE • Do not put unnecessary things in your pockets. Carry only things which are necessary for inspection. PRECAUTIONS FOR KDPF When performing inspection and maintenance during or just after regeneration, take care of the high tempera- ture parts.

  • Page 380: Fuel And Lubricants To Match The Ambient Temperature

    PRECAUTIONS FOR MAINTENANCE MAINTENANCE Checks while the engine is running • For details of the checks when the engine is running, see SAFETY, “TWO WORKERS FOR MAINTE- NANCE WHEN ENGINE IS RUNNING” and pay attention to safety. • Increase the engine speed to check for the leakage of fuel or oil. •...

  • Page 381: Outline Of Maintenance

    • When using commercially available oil, it may be necessary to reduce the oil change interval. We recom- mend that you use the Komatsu oil clinic to check the characteristics of the oil in detail. NOTICE Komatsu recommends using Komatsu genuine engine oil for KDPF. If engine oil other than Komatsu...
  • Page 382 OUTLINE OF MAINTENANCE MAINTENANCE FUEL • To prevent the moisture in the air from condensing and forming water inside the fuel tank, always fill the fuel tank with fuel after completing the day's work. • The fuel pump is a precision equipment, and if fuel containing water or dirt is used, it cannot work properly. •...
  • Page 383 • The fuel can possibly leak because of the deterioration of rubber material of the fuel hose. Replace it with the fuel hose applicable for biofuel. Consult your Komatsu distributor for replace- ment of the fuel hose. •...

  • Page 384: Coolant And Water For Dilution

    (AF-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 385 Grease is used to prevent seizure and noises at the joints. • This construction equipment is used under heavy-duty conditions. Komatsu recommends using the recom- mended grease and follow the replacement intervals and recommended ambient temperatures given in this Operation and Maintenance Manual.
  • Page 386 • When replacing oil filters, check if any metal particles are attached to the old filters. If any metal particles are found, consult your Komatsu distributor. • Do not open packages of spare filters until just before they are to be used.

  • Page 387: Handle Electrical Components

    Never install any electrical components other than those 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. •...

  • Page 388: 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 389 MAINTENANCE STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS Tighten the hoses by the following torque shown in the table. Tightening torque Width Nominal No. of across Target value Allowable range hose flats “b” (mm) kgfm kgfm 35 to 54 3.5 to 5.5 54 to 93 5.5 to 9.5 10.5...

  • Page 390: Maintenance Schedule

    250 hours. For details, see the oil part number and note in RECOMMENDED FUEL, COOLANT AND LUBRICANT. • Contact your Komatsu distributor for changing the maintenance interval of the machine monitor. MAINTENANCE SCHEDULE TABLE WHEN REQUIRED ............................4-17 METHOD FOR CHECKING, CLEANING AND REPLACING AIR CLEANER ..........

  • Page 391: Maintenance Interval For Hydraulic Breaker

    MAINTENANCE MAINTENANCE SCHEDULE METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT ..........4-69 METHOD FOR REPLACING DEF TANK BREATHER ELEMENT............4-70 METHOD FOR CHECKING ALTERNATOR BELT TENSION AND REPLACING ALTERNATOR BELT .. 4-70 EVERY 2000 HOURS MAINTENANCE ......................4-71 METHOD FOR CHANGING OIL IN FINAL DRIVE CASE ............... 4-71 METHOD FOR CLEANING HYDRAULIC TANK STRAINER ..............
  • Page 392 MAINTENANCE SCHEDULE MAINTENANCE Replace hydraulic filter element On a new machine, replace the element after the first 100 to 150 hours, then perform further replacement of the element ac- cording to the table. Change oil in hydraulic tank Change the oil according to the table. Replace additional filter element for breaker (if equip- ped) Use a guideline of 250 hours for use of the breaker (operating...

  • Page 393: Maintenance Procedure

    MAINTENANCE MAINTENANCE PROCEDURE MAINTENANCE PROCEDURE WHEN REQUIRED METHOD FOR CHECKING, CLEANING AND REPLACING AIR CLEANER WARNING • When using compressed air, there is a danger that dirt may scatter and cause personal injury. Always wear protective eyeglasses, dust mask, or other protective equipment. •...
  • Page 394 MAINTENANCE PROCEDURE MAINTENANCE Open the door at the rear left side of the machine, remove hooks (2) (6 places) and remove cover (3). Hold outer element (5), rock it lightly up and down and to the right and left, and twist to pull it out. When outer element (5) is removed, check that the inner element does not come out of position and is not at an an- gle.
  • Page 395 MAINTENANCE MAINTENANCE PROCEDURE NOTICE • Do not use the element with damaged pleats or a damaged gasket or seal. • If the element and O-ring are cleaned and used again after they are used for more than one year, it will cause problems.
  • Page 396 MAINTENANCE PROCEDURE MAINTENANCE Always install cover (3) so that vacuator (4) faces the ground (A). When cover (3) is installed, check that the clearance between the air cleaner body and cover (3) is not too large. If the clearance is too large, remove cover (3), and then install it again.
  • Page 397 MAINTENANCE MAINTENANCE PROCEDURE NOTICE • Do not clean and reuse the inner element. When replacing the outer element, replace the inner ele- ment with a new one at the same time. • If the outer element and cover are installed while the inner element is not installed properly, the out- er element may be damaged.

  • Page 398: 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 4,000 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 399 MAINTENANCE MAINTENANCE PROCEDURE Prepare a container whose capacity is larger than the specified coolant volume to catch drained coolant. Clean the inside of the cooling system according to the following procedure. Place the machine on a level ground, then stop the engine. Remove bolts (A) (2 pieces), then open cover (1).
  • Page 400 MAINTENANCE PROCEDURE MAINTENANCE Place containers under drain valve (5) on the radiator side and drain valve (6) on the engine side to receive the cool- ant. Open drain valves (5) and (6) to drain the coolant. After draining the coolant, close drain valves (5) and (6) and fill with city water.
  • Page 401 MAINTENANCE MAINTENANCE PROCEDURE 13. Turn the fuel control dial to a point midway between Low idle (MIN) and High idle (MAX). NOTICE When the work equipment is operated, take care that it does not interfere with the machine or ground. 14.
  • Page 402 MAINTENANCE PROCEDURE MAINTENANCE 15. Stop the engine and open drain valves (5) and (6) to drain the coolant. 16. Open the engine hood, drain the coolant from sub-tank (7), clean the inside of the sub-tank, then fill with Non-Amine Engine Coolant to the middle between FULL and LOW marks.
  • Page 403 MAINTENANCE MAINTENANCE PROCEDURE 18. Close drain valves (5) and (6). 19. Install covers (3) and (4). 20. Add Non-Amine Engine Coolant through the coolant filler port up to the mouth of the port. For details of the coolant density, see “Coolant density ta- ble”.

  • Page 404: Method For Checking Looseness And Tightening Track Shoe Bolts

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR CHECKING LOOSENESS AND TIGHTENING TRACK SHOE BOLTS NOTICE If the machine is used with track shoe bolts loose, they will break. If any looseness of the shoe bolt is found, retighten it. Check for looseness of the shoe bolt (1). If any looseness of the bolt is found, tighten it in order shown in the figure.

  • Page 405: Method For Replacing Bucket Teeth (Vertical Pin Type)

    Check the track tension again, and if the tension is not correct, adjust it again. If the track tension cannot be decreased by the above procedure, ask your Komatsu distributor for repair. METHOD FOR REPLACING BUCKET TEETH (VERTICAL PIN TYPE) Replace the bucket teeth before the adapter starts to wear.
  • Page 406 MAINTENANCE PROCEDURE MAINTENANCE WARNING • It is dangerous if the work equipment moves by mistake when the tooth is being replaced. Set the work equipment in a stable condition, set the lock lever securely to LOCK position and stop the engine. •...
  • Page 407 MAINTENANCE MAINTENANCE PROCEDURE • The steel ball is about to come off. Rubber (6) of the rubber pin lock is broken. • The steel ball sinks. The rubber of the rubber pin lock is deteriorated and steel ball (7) sinks into it when you press it. Remove the soil stuck to adapter (4) by using a knife.

  • Page 408: Method For Replacing Bucket Teeth (Horizontal Pin Type)

    MAINTENANCE PROCEDURE MAINTENANCE 10. Insert lock pin (2) in the pin hole in tooth (1), and knock it in so that the top surface of lock pin (2) is the same height as the surface of tooth (1). 11. After replacing a bucket tooth, always check the following. •...

  • Page 409: Method For Replacing Bucket Side Cutter And Shroud

    (2). REMARK If it cannot be removed by this method, ask your Komatsu distributor to have the replacement performed. Clean the mounting face. Fit a new tooth (2) in the adapter, push in pin (1) partially by hand, then lock it with a hammer to install the tooth to the bucket.

  • Page 410: Method For Adjusting Bucket Clearance

    Insert pin (1) half way, then drive it in fully with a hammer. Install it to the bucket. REMARK If it cannot be removed by this method, ask your Komatsu distributor to have the replacement performed. METHOD FOR ADJUSTING BUCKET CLEARANCE WARNING It is dangerous if the work equipment moves by mistake when adjusting the bucket clearance.

  • Page 411: Method For Checking Window Washer Fluid Level, Adding Fluid

    MAINTENANCE MAINTENANCE PROCEDURE Use a clearance gauge for easy and accurate measure- ment. Loosen plate mounting bolts (2) (4 pieces) and loosen plate (3). The shim is a split type, so the work can be performed without removing the bolts. Remove shim (4) corresponding to the amount of play “a”.

  • Page 412: Check Level Of Refrigerant (Gas)

    MAINTENANCE PROCEDURE MAINTENANCE Check mainte- Content of check and maintenance Guideline for maintenance interval nance items conditioner con- Clogged fins Every 500 hours denser “METHOD FOR CHECKING AND CLEANING RADIATOR FINS, OIL COOLER FINS, AFTER- COOLER FINS, AND AIR CONDITIONER CONDENSER FINS (4-57)”...

  • Page 413: Method For Washing Washable Floor

    (C) Colorless, transparent: No refrigerant REMARK When there are bubbles, the refrigerant gas level is low, so contact your Komatsu distributor to have refrigerant added. If the air conditioner is run with the refrigerant gas level low, it will cause damage to the compressor.
  • Page 414 MAINTENANCE PROCEDURE MAINTENANCE Referring to “METHOD FOR SETTING MACHINE AT ANGLE”, select a safe method, depending on the state of the machine. In this example, the machine is set at angle by using blocks. Swing the upper structure slowly so that water drain holes (3) in the cab floor are at a low position.
  • Page 415 MAINTENANCE MAINTENANCE PROCEDURE Pull out projections (2) (6 places) on the back of the floor mat and remove the floor mat. Remove the cap from water drain hole (3). Flush out the dirt on the floor directly with water through water drain hole (3).

  • Page 416: Method For Checking Gas Spring

    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. 4-40...

  • Page 417: Method For Bleeding Air From Hydraulic Circuit

    MAINTENANCE PROCEDURE The gas springs are located at the engine hood (2 places on right and left sides). In the following cases, ask your Komatsu distributor for inspection, repair, and replacement. • The engine hood is heavy to open. •...
  • Page 418 If oil does not ooze out, stop the engine, remove port S hose (3), and fill the motor case with hydraulic oil. When replacing the travel motor safety valve, ask your Komatsu distributor for the replacement and the air bleeding.

  • Page 419: Method For Cleaning Line Filter And Removing Dirt

    MAINTENANCE MAINTENANCE PROCEDURE METHOD FOR BLEEDING AIR FROM ATTACHMENT (WHEN ATTACHMENT IS EQUIPPED) NOTICE • If the method of air bleeding from the attachment is specified by the manufacturer, bleed the air ac- cording to the specified procedure. • After completing the air bleeding operation, stop the engine, and leave the machine for 5 minutes before starting operations.

  • Page 420: Checks Before Starting

    If the traffic cone can be seen on the monitor screen, it is nor- mal. If the traffic cone cannot be seen on the monitor screen, ask your Komatsu distributor for adjustment of the cam- era image. CHECKS BEFORE STARTING For the following items, see OPERATION, “METHOD FOR CHECKING BEFORE STARTING”.

  • Page 421: Every 250 Hours Maintenance

    MAINTENANCE MAINTENANCE PROCEDURE Park the machine on a level and firm ground, lower the work equipment to the ground in the posture shown in the figure, and stop the engine. By using a grease pump, pump in grease through the grease fittings shown by arrows. (1) Arm-Link connection pin (1 place) (2) Arm and bucket connection pin (1 place) (3) Link connection pin (2 places)
  • Page 422 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 423: Method For Checking And Adjusting Air Conditioner Compressor Belt Tension

    MAINTENANCE MAINTENANCE PROCEDURE Remove cap (2) at the top of the battery and check the electrolyte level through electrolyte filler port (3). If the electrolyte does not reach the sleeve (4), always add the purified water (e.g. commercially available replenish- ment water for a battery) so that the level reaches the bot- tom of the sleeve (UPPER LEVEL line).

  • Page 424: Method For Checking Looseness And Tightening Connecting Bolt Between Centre Frame And Track Frame

    MAINTENANCE PROCEDURE MAINTENANCE Press the centre between crankshaft pulley (A) and com- pressor pulley (B) with a finger (approximately 58.8 N  {6.0 } ). If deflection (C) is 14 to 16 mm, the belt tension is normal. If the deflection is out of the standard, adjust it to the standard value.

  • Page 425: Every 500 Hours Maintenance

    MAINTENANCE MAINTENANCE PROCEDURE Check for looseness of the bolts (1) connecting the centre frame and track frame. If any looseness of the bolt is found, tighten it. Tightening torque: 1715 ± 195 Nm {175 ± 20 kgfm} METHOD FOR LUBRICATING SWING CIRCLE Items to be prepared Grease pump Lower the work equipment to the ground.
  • Page 426 MAINTENANCE PROCEDURE MAINTENANCE Set the work equipment on the level and firm ground in the maintenance posture as shown in the figure, then lower it to the ground and stop the engine. By using a grease pump, pump in grease through the grease fittings shown by arrows. (1) Boom cylinder rod pin (2 places) (2) Arm cylinder foot pin (1 place) (3) Boom and arm connection pin (1 place)
  • Page 427 MAINTENANCE MAINTENANCE PROCEDURE METHOD FOR CHANGING OIL IN ENGINE OIL PAN, REPLACING ENGINE OIL FILTER CARTRIDGE WARNING Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn injury. Accordingly, wait until they have cooled down before starting the work. Refill capacity of oil pan: 38 ℓ...

  • Page 428: 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 429 MAINTENANCE MAINTENANCE PROCEDURE Place a container under fuel prefilter cartridge (2) to re- ceive the fuel. Loosen drain valve (3) and drain water and sediments from transparent cup (4), and also drain all the fuel from fil- ter cartridge (2). Remove connector (5).
  • Page 430 MAINTENANCE PROCEDURE MAINTENANCE REMARK • If water gets on connector (5), the sensor may mal- function and the water separator caution lamp may light up. When removing connector (5), be extremely careful not to let water attach to the connector. •...
  • Page 431 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 432: Method For Checking Swing Pinion Grease Level, Add Grease

    MAINTENANCE PROCEDURE MAINTENANCE NOTICE • When filling the filter cartridge with fuel, do not re- move cap (B). Always fill with fuel from small holes (A) (8 places) on the dirty side. • After filling with fuel, remove cap (B) and install the fuel filter.

  • Page 433: Method For Checking And Cleaning Radiator Fins, Oil Cooler Fins, Aftercooler Fins, And Air Conditioner Condenser Fins

    Total amount of grease: 33 ℓ (29.7 ) If the grease is milky white, it needs to be replaced. Ask your Komatsu distributor to replace it. Install cover (2) with bolt (1). METHOD FOR CHECKING AND CLEANING RADIATOR FINS, OIL COOLER FINS,...

  • Page 434: Method For Cleaning Air Conditioner Fresh/Recirc Filters

    Visually check the rubber hose connected to the heat exchange equipment. Check the hose clamp for looseness as well. If the rubber hose is cracked or become fragile, ask your Komatsu distributor for replacement. If the hose clamp is loose, tighten it.
  • Page 435 MAINTENANCE MAINTENANCE PROCEDURE NOTICE • The cleaning interval of 500 hours is a rough standard. Clean at shorter intervals in dusty jobsites. • To clean the recirculation air filter, stop the air conditioner, and remove the recirculation air filter from the cab. If water gets to the recirculation air filter while it is installed in the cab, it can cause a failure of the air conditioner.

  • Page 436: Method For Checking Oil Level In Swing Machinery Case, Adding Oil

    MAINTENANCE PROCEDURE MAINTENANCE Set the compressed air pressure below 0.49MPa{5kgf/ } and blow it in the arrow direction. If there is oil on the filter, or if the filter is extremely dirty, wash it in a neutral detergent. After rinsing it in water, dry it thoroughly before using it again.

  • Page 437: Method For Checking Oil Level In Final Drive Case, Adding Oil

    MAINTENANCE MAINTENANCE PROCEDURE Pull out dipstick (G) and check that the oil level is between the (H) and (L) marks on the dipstick. If the oil does not reach the (L) mark on dipstick (G), add oil through the hole for the dipstick. When adding oil, remove air bleeding plug (1).

  • Page 438: Every 1000 Hours Maintenance

    Check structures for cracks. If any cracks are found contact your Komatsu distributor. If the structure is welded, or holes are drilled in it, or it is repaired in any other way, its strength may be reduced.
  • Page 439 MAINTENANCE MAINTENANCE PROCEDURE Park the machine on a level and firm ground, lower the work equipment to the ground in the posture shown in the figure, and stop the engine. Remove the cap for oil filler (F), and release the internal pressure.

  • Page 440: Method For Change Oil In Swing Machinery Case

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR CHANGE OIL IN SWING MACHINERY CASE WARNING Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn injury. Accordingly, wait until they have cooled down before starting the work. Refill capacity: 20 ℓ...

  • Page 441: 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 442 MAINTENANCE PROCEDURE MAINTENANCE Turn valve (1) at the bottom of the fuel tank to “CLOSE” position (S). Open the engine hood. Place a container under the filter cartridge (2) to receive the fuel. Turn filter cartridge (2) counterclockwise by using the filter wrench, and remove it.
  • Page 443 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 444 MAINTENANCE PROCEDURE MAINTENANCE Turn filter cartridge (2) counterclockwise by using the filter wrench, and remove it. After removing the filter cartridge, fuel drops fall down from the filter head. In order to prevent flow out of the fuel, be sure not to leave the machine without the filter cartridge.

  • Page 445: Method For Checking All Tightening Points Of Engine Intake Pipe Clamps

    METHOD FOR CHECKING AND RELEASING NITROGEN GAS CHARGE PRES- SURE IN ACCUMULATOR (FOR BREAKER) (if equipped) A special tool is needed for checking and charging of nitrogen gas. Ask your Komatsu distributor to perform this work. METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT WARNING •...

  • Page 446: Method For Replacing Def Tank Breather Element

    Close DEF tank cover at the right of the machine. METHOD FOR CHECKING ALTERNATOR BELT TENSION AND REPLACING AL- TERNATOR BELT Special tools are required for inspection and replacement of the alternator belt. Ask your Komatsu distributors for inspection and replacement. REMARK As the auto alternator belt tensioner is installed, no belt tension adjustment is required.

  • Page 447: Every 2000 Hours Maintenance

    MAINTENANCE MAINTENANCE PROCEDURE EVERY 2000 HOURS MAINTENANCE Maintenance for every 50, 250, 500 and 1000 hours service should be performed at the same time. METHOD FOR CHANGING OIL IN FINAL DRIVE CASE WARNING • Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in- jury.

  • Page 448: Check Function Of Accumulator For Control Circuit And Release Internal Pressure In Hydraulic 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 449 MAINTENANCE MAINTENANCE PROCEDURE • Release the pressure from the hydraulic circuit. The accumulator is installed to the position shown in the figure. METHOD FOR CHECKING ACCUMULATOR FUNCTION CAUTION When performing the inspection, check first that there is no person or obstacle in the surrounding area. Check the nitrogen gas charge pressure as follows.
  • Page 450 If the work equipment does not go down or stops in midway, the charged pressure of the gas in the accumulator for the hy- draulic circuit has probably dropped. Ask your Komatsu distrib- utor for inspection. This completes the inspection. After completion of the inspection, set the lock lever to LOCK position and turn the starting switch to OFF position.

  • Page 451: Method For Checking Alternator

    Ask your Komatsu distributor to have the alternator checked. If the engine is started frequently, have this inspection performed every 1000 hours. METHOD FOR CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE Special tools are necessary for inspection and maintenance. Ask your Komatsu distributor to perform this work. 4-75...

  • Page 452: Method For Replacing Kccv Filter Element

    MAINTENANCE PROCEDURE MAINTENANCE METHOD FOR REPLACING KCCV FILTER ELEMENT WARNING After the engine has been operated, all of the parts are still very hot. Do not replace the filter element immediately. Wait until all of parts cool down before starting the work. NOTICE •...
  • Page 453 MAINTENANCE MAINTENANCE PROCEDURE There may be oil accumulated or sticking in the case and element. Take care not to spill the oil when replacing the element. REMARK When the ambient temperature is low, water or emulsified matter may stick to the inside of KCCV because of con- densation of water vapor in the blowby gas.

  • Page 454: Method For Replacing Def Filter

    Komatsu recommends using Komatsu genuine parts for replacement parts. • If the machine is operated without DEF filter attached, or with the filter other than Komatsu genuine parts, foreign materials may enter into DEF pump and DEF injector which will cause failure of the machine.
  • Page 455 MAINTENANCE MAINTENANCE PROCEDURE After the engine is stopped, the devices are operated for a few minutes. Before replacing the filter, clean around the DEF pump first after DEF system devices stop. Items to be prepared • DEF filter removal tool The DEF filter is located at the positions shown in the figure on the right.
  • Page 456 MAINTENANCE PROCEDURE MAINTENANCE Check that filter removal tool (3) is fully inserted to the end. Insert the filter removal tool to the end where you cannot thrust it in any further. Turn filter removal tool (3) in reverse, and remove filter (6). Filter (6) is removed and you can take it out together with filter removal tool (3).

  • Page 457: Every 4000 Hours Maintenance

    Accumulator for additional attachment METHOD FOR CHECKING WATER PUMP Check for leakage of water and oil around the water pump. If any problem is found, ask your Komatsu distributor to perform disassembly, repair, or replacement. METHOD FOR CHECKING STARTING MOTOR Consult your Komatsu distributor for inspection of the starting motor.

  • Page 458: Method For Replacing Accumulator (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 459: Method For Checking For Looseness Of Engine High-Pressure Piping Clamp, Hard- Ening Of Rubber

    Check clamps (1) to (14) visually and with your fingers that there are no loose bolts or hardening of the rubber. If there is any problem, the replacement must be performed. Ask your Komatsu distributor for replacement. METHOD FOR CHECKING FOR MISSING FUEL SPRAY PREVENTION CAP,...

  • Page 460: Every 4500 Hours Maintenance

    Contact your Komatsu distributor for cleaning of the KDPF. METHOD FOR CLEANING DEF TANK Ask your Komatsu distributor for cleaning of the DEF tank. METHOD FOR REPLACING DEF TANK FILLER PORT FILTER Ask your Komatsu distributor for replacement of the DEF tank filler port filter. 4-84...

  • Page 461: Every 5000 Hours Maintenance

    Check fuel spray prevention caps (1) and (2) visually or with a finger to see if any of them has slipped off, or the rubber portion is hardened. If there is any problem, the replacement must be performed. Ask your Komatsu distributor for replacement. EVERY 5000 HOURS MAINTENANCE Maintenance for every 50, 250, 500 and 1000 hours service should be performed at the same time.
  • Page 462 MAINTENANCE PROCEDURE MAINTENANCE Swing the upper structure so that drain plug (P) of the hy- draulic tank and drain plug (A) at the bottom of the pump suction tube are placed in between the right and left tracks. Retract the arm and bucket cylinder rods, then lower the boom to lower the tooth to the ground.

  • Page 463: Every 8000 Hours Maintenance

    Special techniques and tools are required for this work. Ask your Komatsu distributor for replacement of the fuel spray prevention cap on fuel doser. END OF SERVICE LIFE • For safe dismantling of the machine at the end of service life, please contact your Komatsu distributor. 4-87...

  • Page 465: Specifications

    SPECIFICATIONS...
  • Page 466 Machines that are designated as Heavy Duty specification are supplied with arm length of 2.4m, 2.9m or 3.4m. These machines are not recommended for use with arm lengths of 4.0m and 4.8m. Please contact your Komatsu distributor for further information if required.

  • Page 467: Explanation Of Lift Capacity Chart (6.7M Boom)

    SPECIFICATIONS SPECIFICATIONS Working ranges Unit PC490-11 E0, PC490LC-11 E0 A Max. digging reach 12030 B Max. digging depth 7755 C Max. digging height 10980 D Max. vertical wall digging depth 6805 E Max. dumping height 7630 F Min. dumping height 2970 G Max.
  • Page 468 SPECIFICATIONS SPECIFICATIONS (3) Boom length (4) Hydraulic pressure: 37.3 MPa WORKING CONDITIONS: • WITH BUCKET 1914 kgf. • IF OBJECT HANDLING IS PERFORMED WITH OTHER TOOL INSTALLED, THE WEIGHT DIFFERENCE OF THE TOOL SHALL BE DEDUCTED FROM VALUES OF THIS TABLE. •...
  • Page 469 SPECIFICATIONS SPECIFICATIONS 6.7m Boom - PC490-11 E0...

  • Page 470: Explanation Of Lift Capacity Chart (7.1M Boom)

    SPECIFICATIONS SPECIFICATIONS 6.7m Boom - PC490LC-11 E0 EXPLANATION OF LIFT CAPACITY CHART (7.1M BOOM) 7.1m Boom - PC490-11 E0, PC490LC-11 E0 LEGEND A: Reach from swing centre B: Bucket hook height OF: Lifting capacity (rating overfront) OS: Lifting capacity (rating overside) LEGEND (1) Position of lifting point (2) Arm length...
  • Page 471 SPECIFICATIONS SPECIFICATIONS 1115 kgf (4.0m Arm), 1189 kgf (4.8m Arm). • IF OBJECT HANDLING IS PERFORMED WITH OTHER TOOL INSTALLED, THE WEIGHT DIFFERENCE OF THE TOOL SHALL BE DEDUCTED FROM THE VALUES OF THIS TABLE. • WITH FULLY EXTENDED BUCKET CYLINDER. •...
  • Page 472 SPECIFICATIONS SPECIFICATIONS 7.1m Boom - PC490-11 E0...
  • Page 473 SPECIFICATIONS SPECIFICATIONS 7.1m Boom - PC490LC-11 E0...

  • Page 475: Attachments And Options

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

  • Page 476: Precautions For Using Attachment And Options

    Install only attachments or options authorized by Komatsu. Komatsu cannot accept any responsibility for any not authorized by Komatsu. Any personal injury, failure, or property damage caused by the use of unauthorized attachments or options will not be the responsibility of Komatsu.
  • Page 477 ATTACHMENTS AND OPTIONS PRECAUTIONS FOR USING ATTACHMENT AND OPTIONS miscalculated, so allow extra space to the position you want to stop swinging when performing the swing. • The hydraulic drift of the work equipment (the amount of the work equipment moves down under its own weight when it is stopped in a raised position) also becomes greater.

  • Page 478: Quick Coupler System

    Maximum cir- cuit pressure 34.3 MPa (350 kgf/cm • Ensure that the quick coupler is installed by a suitably qualified technician. If in doubt contact your Komatsu dealer. • After assembly of a hydraulic quick coupler and before first use of such quick coupler, ensure that the set- ting in machine control system setting is correct.
  • Page 479 ATTACHMENTS AND OPTIONS QUICK COUPLER SYSTEM QUICK COUPLER MANIFOLD PORT LOCATION AND HYDRAULIC CONNECTIONS OPERATION OF QUICK COUPLER TO RELEASE A BUCKET OR ATTACHMENT WARNING Pressure in the system can cause injury. Follow all instructions in ATTACHMENT REMOVAL AND IN- STALLATION.
  • Page 480 This machine has a system installed to give a warning if there is a failure to maintain pressure in the quick coupler system. If the buzzer sounds in the cab make sure that the cause is clarified be- fore continuing work. In particular check for leaks in the system. If in doubt call your Komatsu dis- tributor.
  • Page 481 ATTACHMENTS AND OPTIONS QUICK COUPLER SYSTEM Operate switch (1), and with switch (1) in position “B” press and hold button (2) on the left hand lever, to activate quick coupler. NOTICE The switch has a safety lock mechanism to prevent ac- cidental operation.

  • Page 482: Automatic Grease System

    If in doubt please consult your Ko- matsu distributor. Komatsu genuine grease is provided to maintain reliability and durability of Komatsu construction equipment and components. In order to keep your machine in the best condition for long periods of time, it is essential to follow the instructions in this Operation and Maintenance Manual.

  • Page 483: Diagram Of Automatic Greasing Points

    ATTACHMENTS AND OPTIONS AUTOMATIC GREASE SYSTEM DIAGRAM OF AUTOMATIC GREASING POINTS DIAGRAM OF AUTOMATIC GREASING POINTS Part/Location Swing circle Boom cylinder foot pin Boom foot pin Boom cylinder rod end Arm cylinder foot pin Boom arm coupling Arm cylinder rod end Bucket cylinder foot pin Bucket cylinder rod end (may not be available with some...

  • Page 484: Changing The Grease Interval With The In-Cab Display

    AUTOMATIC GREASE SYSTEM ATTACHMENTS AND OPTIONS CHANGING THE GREASE INTERVAL WITH THE IN-CAB DISPLAY Make sure the ignition is switched ON. Push the switch-button for at least 5 seconds until the 3-digit display starts flashing; Push the switch-button to select the desired duty mode. Leave the desired duty mode flashing for at least 6 sec- onds until the duty mode comes on.

  • Page 485: Check Automatic Grease System

    ATTACHMENTS AND OPTIONS AUTOMATIC GREASE SYSTEM Green lamp (4) flashing Normal duty Green lamp (4) flashing Heavy duty A green lamp is flashing during one complete cycle (2.0 Single test run being executed sec. on/2.0 sec. off) A green lamp is flashing during one complete cycle (2.0 Continuous test run being executed (see system test) sec.

  • Page 486: System Test

    AUTOMATIC GREASE SYSTEM ATTACHMENTS AND OPTIONS REFILLING GREASE If the yellow lamp on the in-cab display illuminates and the 3- digit display shows "LO", the minimum grease level in the res- ervoir has been reached. The grease reservoir must be refilled as soon as possible.
  • Page 487 ATTACHMENTS AND OPTIONS AUTOMATIC GREASE SYSTEM Move the starter switch to the ON position (B). Depress the test button (9) on the pump for three to five seconds. The system will run a run a single test. During this test the green LED (4) of the selected interval on the in-cab display (2) will flash (2 sec.
  • Page 488 AUTOMATIC GREASE SYSTEM ATTACHMENTS AND OPTIONS NOTICE Only use grease tests cycles if necessary. Every time a test cycle is carried out grease is added to the grease points. This will increase grease usage and can cause excessive greasing of the grease points.

  • Page 489: Handle Bucket With Hook

    If the bucket with hook is turned 180 deg. and used for opera- tions, it will hit the arm during the bucket DUMP operation. Be careful when using it. If you are planning to newly install a hook, ask your Komatsu distributor for installation. Refer also to GENERAL PRECAUTIONS FOR LIFTING OP-...

  • Page 490: Handle Machine Ready For Installation Of Attachment

    HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF AT- TACHMENT EXPLANATION OF COMPONENTS ON MACHINE EQUIPPED WITH AT- TACHMENT (1) Stop valve (2) Selector valve (3) Attachment control pedal (4) Lock pin (5) Additional filter for breaker (6) Accumulator (7) 1st Attachment proportional control switch...

  • Page 491: Selector Valve

    ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT (F) FREE Hydraulic oil flows. (L) LOCK Hydraulic oil stops. When removing or installing attachments, set this valve to LOCK position. REMARK Oil pressure may be remained on the attachment side even though the stop valve is in LOCK position (L).

  • Page 492: Control Pedal

    HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS ATTACHMENT 2 VARIABLE RELIEF PRESSURE VALVE When the attachment control function by attachment 2 is instal- led to the machine, the attachment set pressure which has been selected with the machine monitor will be outputted. The pressure automatically switches according to the attach- ment to be selected.
  • Page 493 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. 6-19...
  • Page 494 . If breaker operation is performed without having an accumulator installed, the service life of the machine will be reduced. Contact your Komatsu distributor for further information regarding the breaker. This accumulator is installed to reduce the peak pressure in the hydraulic circuit when the breaker is used.

  • Page 495: Method For Change-Over And Connect Hydraulic Circuit For Machine Ready For Installation Of Attachment

    B mode set at the shipment from the plant and it becomes 27.4 MPa {280 kgf/cm } when ATT/P or ATT/E mode is selected. Depending on the attachment, it may be necessary to adjust the pressure. Ask your Komatsu distributor for the adjustment. 6-21...
  • Page 496 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS PEDAL OPERATION AND OIL FLOW OF MACHINE EQUIPPED WITH ATTACH- MENT The direction of operation of the pedal and the path of the oil flow is as shown in the figure. •...

  • Page 497: Method For Removing And Installing Attachment

    ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT Crusher or other attachment with 2-way circuit Install an optional attachment and set the working mode to ATT/P or ATT/E mode. Hydraulic oil flowing through crusher circuit does not pass through additional filter for breaker. Relief valve is set to high pressure.
  • Page 498 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS Operate each work equipment control lever and attach- ment control pedal fully to the front, rear, right, and left a few times within 15 seconds to release the internal pres- sure in the hydraulic circuit.
  • Page 499 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT For the removal procedure of the bucket, see “METHOD FOR REPLACING AND INVERTING BUCKET (3-233)”. Place the attachment on a horizontal place, install pin (A) and then pin (B) in this order to the arm. Pin (A) 80 mm diameter Pin (B) 80 mm diameter Lower the attachment to the ground and stop the engine.
  • Page 500 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS Operate each work equipment control lever and attach- ment control pedal fully to the front, rear, right, and left a few times within 15 seconds to release the internal pres- sure in the hydraulic circuit.

  • Page 501: Method For Operating Attachment

    ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT METHOD FOR OPERATING ATTACHMENT WARNING If the travel levers or travel pedals are operated when the engine speed is decreased by the auto-decel- eration function, the engine speed will suddenly increase. Be careful. If you perform operations with your foot on the pedal, the attachment may suddenly move if you de- press the pedal by mistake, and this may lead to serious personal injury or death.
  • Page 502 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS METHOD FOR OPERATING MACHINE WHEN WORKING MODE IS NOT IN BREAKER MODE Change the working mode and enter the Breaker Mode. Press working mode selector switch (1). The screen changes to the working mode selection screen.
  • Page 503 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT • Is the working mode set to B mode? For the oil passage route, see “METHOD FOR CHANGE-OVER AND CONNECT HYDRAULIC CIRCUIT FOR MACHINE READY FOR INSTALLATION OF ATTACHMENT”. • Do you replace the hydraulic oil and its filter element at intervals shorter than the standard? The deterioration of the hydraulic oil when using the breaker is much faster than in the normal operations, so check the maintenance time with “MAINTENANCE SCHEDULE”.
  • Page 504 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS Press working mode selector switch (1) or switch F3 or F4 to select Attachment Mode ATT/P or ATT/E. With Attachment Mode ATT/P or ATT/E highlighted in yel- low, enter the selection by either of the following opera- tions.
  • Page 505 (A) shows the flow rate which flows through the at- tachment and (B) shows the hydraulic oil pressure which flows through the attachment. For the hydraulic oil pressure through the attachment, consult your Komatsu distributor. METHOD FOR OPERATION WHEN USING GENERAL ATTACHMENT 1 (E.G. CRUSHER) WARNING When operating the attachment using rolling switch, lock the pedal with the lock pin to avoid accidental operation.

  • Page 506: Long-Term Storage

    HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS With the working mode set at ATT mode, insert the lock pin in FREE position (c) for both front and rear. Depress the front or rear of the pedal to operate the attachment. METHOD FOR OPERATION WHEN USING GENERAL ATTACHMENT 2 (E.G.
  • Page 507 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT Container to receive drained oil Prepare for the maintenance so that it can be performed as follows. Lower the work equipment to the ground and stop the en- gine. Turn the starting switch to ON (B) position. Set the lock lever to FREE position (F).
  • Page 508 HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS Set the lock lever to LOCK position (L). After preparation is completed, replace the additional filter for breaker according to the following procedure. METHOD FOR REPLACING ADDITIONAL FILTER ELEMENT FOR BREAKER Loosen oil filler cap (F) slowly on the top of the hydraulic tank to release the internal pressure in the hydraulic tank.
  • Page 509 ATTACHMENTS AND OPTIONS HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT METHOD FOR REPLACING ADDITIONAL PILOT FILTER ELEMENT FOR BREAK- Loosen oil filler cap (F) slowly on the top of the hydraulic tank to release the internal pressure in the hydraulic tank. Set a container to receive the oil under additional pilot filter (1).

  • Page 510: Specifications

    SPECIFICATIONS ATTACHMENTS AND OPTIONS SPECIFICATIONS Hydraulic specifications • Max. flow when merged: 275×2 ℓ/min • Safety valve relief set pressure of service valve Port A: 21.6 MPa {220 kgf/cm } (other than mode B) Port B: 24.5 MPa {250 kgf/cm } (other than mode B) •...

  • Page 511: Arm/Pin Information

    ATTACHMENTS AND OPTIONS ARM/PIN INFORMATION ARM/PIN INFORMATION A - A B - B KS000370 +0.2 +1.0 370 mm 370 mm -0.7 -0.0 PC490-11 E0 / PC490LC-11 E0 -0.036 -0.036 100 mm 100 mm -0.090 -0.090 6-37...

  • Page 512: Attachments And Options

    • Installing attachments or optional equipment without consulting your Komatsu distributor may not only cause problems with safety, but may also have an adverse effect on the operation of the ma- chine and the life of the equipment.

  • Page 513: Rock Bucket Selection

    ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS Material 3.50 / 2450 3.50 / 2450 2.76 / 2175 2.76 / 2175 2.76 / 2175 2.40 / 2025 2.20 / 1925 / kgf 1.3 t/m Material 3.47 / 2450 3.18 / 2325 2.76 / 2175 2.76 / 2175 2.71 / 2175 2.20 / 1925 1.69 / 1650 / kgf 1.5 t/m Material...

  • Page 514: Track Shoes Selection

    ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS Values shown are in accordance with EN474-5:2006+A1:2009 (E) TRACK SHOES SELECTION Select the appropriate track shoe to match the operating conditions. Track shoes selection Confirm the category from the list of uses in Table 1, then use Table 2 to select the shoe. •...

  • Page 515: Recommended Attachment Operations

    Select the optimum attachment model for the hydraulic excavator body. The attachments and models ready for installation differ according to the machine body. For details of the selection of the attachments or the models, consult your Komatsu distributor. HYDRAULIC BREAKER Applicable work Major works suitable to the hydraulic breaker are as follows.
  • Page 516 RECOMMENDED ATTACHMENT OPERATIONS ATTACHMENTS AND OPTIONS Push the chisel against the impact surface and operate so that the chassis rises approximately 5 cm off the ground. Do not raise it off the ground unnecessarily. When the chisel does not penetrate or break the surface by continuous impact to the same impact surface for 1 minute, change the point of impact and perform breaking operations by scraping from the edge.
  • Page 517 ATTACHMENTS AND OPTIONS RECOMMENDED ATTACHMENT OPERATIONS Do not use the mount to gather in pieces of rock. Do not work by using the swing force. Do not move the chisel while performing breaking operation. Do not perform breaker operation in horizontal or upward direc- tion.
  • Page 518 RECOMMENDED ATTACHMENT OPERATIONS ATTACHMENTS AND OPTIONS Do not pry the ground or rock with the chisel penetrated. Do not perform pick work. Do not perform the operation with bucket cylinder rod extended fully to raise the machine off the ground. Do not perform the breaker work with any cylinder at the stroke end.
  • Page 519 ATTACHMENTS AND OPTIONS RECOMMENDED ATTACHMENT OPERATIONS Grease the breaker while holding it in the right posture shown below. • Lower the chisel perpendicularly to the ground. • Insert the grease gun perpendicularly to the greasing point. Wrong posture 6-45...

  • Page 521: Replacement Parts

    REPLACEMENT PARTS...

  • Page 522: Periodic Replacement Of Defined Life Parts

    PERIODIC REPLACEMENT OF DEFINED LIFE PARTS For using the machine safely for an extended period of time, Komatsu highly recommends the periodic replace- ment of the defined life and fire prevention-related parts listed in the table of the defined life parts.

  • Page 523: 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 524 CONSUMABLE PARTS REPLACEMENT PARTS Replacement in- Item Part No. Part Name Q'ty terval Vertical pin type 208-70-34211 Tooth (208-70-34220) (Pin) (208-70-34191) (Lock) Horizontal pin type 208-70-14152 Tooth (09244-03036) (Pin) Bucket Side cutter type 208-70-34160 Side cutter (left) 208-70-34170 Side cutter (right) Shroud type 208-934-7132 Shroud...

  • Page 525: Recommended Fuel, Coolant, And Lubricant

    • Komatsu recommends the use of Komatsu genuine engine oil for KDPF. The use of oil other than Komatsu genuine engine oil for KDPF will have bad effects to the engine components such as re- duced KDPF filter cleaning interval or reduced lubrication function by deterioration of the engine oil.
  • Page 526 • The fuel can possibly leak because of the deterioration of rubber material of the fuel hose. Replace it with the fuel hose applicable for biofuel. Consult your Komatsu distributor for replace- ment of the fuel hose. •...

  • Page 527: Lubrication Chart

    REPLACEMENT PARTS RECOMMENDED FUEL, COOLANT, AND LUBRICANT LUBRICATION CHART • The lubrication standard chart uses symbols to show the lubrication points and types of lubricant by each lubrication interval. Keep this standard chart in the magazine box inside the cab so that the people concerned can reference it any time during lubrication.

  • Page 528: Use Of Fuel, Coolant And Lubricants According To Ambient Temperature

    RECOMMENDED FUEL, COOLANT, AND LUBRICANT REPLACEMENT PARTS Replace DEF filter USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE Ambient Temperature, degrees Celsius Recommended Komatsu Reservoir Fluid Type Fluids Engine oil for EOS5W30-LA KDPF used in -25 °C 35 °C (KES Diesel Engine Oil)

  • Page 529: 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 531: Index

    INDEX INDEX Symbols Air suspension seat hardness - Adjust..3-181,3-185 Alternator - Check..........4-75 12H/24H display mode - Switch......3-86 Alternator belt tension - Check / Replace..... 4-70 1st attachment proportional control switch..3-101 Always use clean washer fluid........ 4-2 1st-line attachment proportional switch....6-20 Ambient temperature range for operation and storage 2nd attachment proportional control switch..
  • Page 532 INDEX Beware of asbestos dust........2-31 Coolant..............3-282 Bio-fuel..............4-6 Coolant - Check level / Add........ 3-172 Breaker - Check points when using ..... 6-28 Coolant and water for dilution......... 4-8 Breaker - Operate..........6-27 Cooling system - Clean inside......4-22 Breaker - Set............3-70 Counter-rotation turn...........3-218 Breaker mode switch..........
  • Page 533 INDEX Door lock - Use........... 3-109 Every 4000 hours maintenance......4-81 Drain valve - Adjust..........3-169 Every 4500 hours maintenance......4-84 Drink box............. 3-110 Every 50 hours maintenance........ 4-44 Dusty jobsite............4-3 Every 500 hours maintenance......4-49 Every 5000 hours maintenance......4-85 Every 8000 hours maintenance......
  • Page 534 Guide to reduce vibration levels on machine..1-9 Keep work place clean and tidy......2-42 Key-on camera - Position........3-91 Komatsu Closed Crankcase Ventilation (KCCV) 3-127 Komatsu genuine lubricants........4-2 Handle oil, fuel, coolant, and performing oil clinic...4-5 Komatsu genuine replacement parts...... 4-2 Handling automatic grease system......6-8...
  • Page 535 INDEX Machine - Check walk-around......3-165 Maintenance interval for hydraulic breaker... 4-15 Machine - Checks after inspection and maintenance.. Maintenance of air conditioner......2-50 .................4-3 Maintenance procedure........4-17 Machine - Escape from mud....... 3-230 Maintenance schedule.......... 4-14 Machine - Lift............3-278 Maintenance schedule table.........
  • Page 536 INDEX Other mode operations while camera image is dis- Precautions for noise..........2-48 played............3-55 Precautions for operation... 2-29,2-33,3-227,6-15 Other precautions..........2-52 Precautions for refilling oil or fuel......4-2 Other trouble............3-293 Precautions for SCR assembly....... 4-3 Outline of KOMTRAX..........3-159 Precautions for severe job condition....3-289 Outline of maintenance...........
  • Page 537 INDEX Prohibition of digging operation on hard rocky ground..............3-225 Safety..............2-2 Prohibition of high-speed travel operations on rough Safety information........... 1-6 ground............3-227 Safety labels............. 1-7,2-4 Prohibition of operations using bucket as lever.. 3-224 Safety rules for storage.........2-52 Prohibition of operations using bucket dropping force. Safety-related equipment........2-19 ..............3-224 SCR information............3-80...
  • Page 538 INDEX System operating lamp........3-116 Washable floor mat - Clean........4-37 Water pump - Check..........4-81 Water separator - Check / Drain water and sediment...............3-169 Target fuel consumption value displayed in ECO Wear well-fitting clothes and protective equipment..gauge - Set............ 3-67 ...............2-19 Temperature set switch........
  • Page 540 PC490-11E0, PC490LC-11E0 HYDRAULIC EXCAVATOR Form No. UENAM01635 ©2019 KOMATSU All Rights Reserved Printed in Belgium 01-2020...

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