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NOTICE Komatsu has Operation & Maintenance Manuals written in some other languages. If a foreign language manual is necessary, contact your local distributor for availability.
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FOREWORD Find manuals at https://best-manuals.com...
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If you sell the machine, be sure to give this manual to the new owners together with the machine. Komatsu delivers machines that comply with all applicable regulations and standards of the country to which it has been shipped. If this machine has been purchased in another country or purchased from someone in another country, it may lack certain safety devices and speciffications that are necessary for use in your country.
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FOREWORD SAFETY INFORMATION SAFETY INFORMATION To enable you to use this machine safely, safety precautions and labels are given in this manual and affixed to the machine to give explanations of situations involving potential hazards and of the methods of avoiding such situa- tions.
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Continuing improvements in the design of this machine can lead to changes in detail which may not be reflected in this manual. Consult Komatsu or your Komatsu distributor for the latest available information of your machine or for questions regarding information in this manual.
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FOREWORD INTRODUCTION INTRODUCTION This Komatsu HYDRAULIC EXCAVATOR is designed to be used mainly for the following works: Digging work Leveling work Ditching work Loading work Demolition work See the section "RECOMMENDED APPLICATIONS (PAGE 3-109)" for further details. DIRECTIONS OF MACHINE In this manual, the terms front, rear, left, and right refer to the travel direction as seen from the operator's cab when the operator's cab is facing the front and the sprocket is at the rear of the machine.
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FOREWORD PRODUCT INFORMATION PRODUCT INFORMATION When requesting service or ordering replacement parts, please inform your Komatsu distributor of the following items. MACHINE SERIAL NUMBER PLATE AND ITS LOCATION On the bottom right of the operator's cab ENGINE SERIAL NUMBER PLATE AND ITS LOCATION On the top of the No.1 cylinder head cover (The EPA auxiliary nameplate is on the top of the No.
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FOREWORD PRODUCT INFORMATION SERVICE METER LOCATION On top of the machine monitor YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR Machine serial No. Engine serial No. Distributor name Address Service Personal Phone/Fax Find manuals at https://best-manuals.com...
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FOREWORD CONTENTS CONTENTS FOREWORD FOREWORD................................. 1-1 SAFETY INFORMATION............................1-3 INTRODUCTION..............................1-5 DIRECTIONS OF MACHINE ........................1-5 PRODUCT INFORMATION ..........................1-6 MACHINE SERIAL NUMBER PLATE AND ITS LOCATION ..............1-6 ENGINE SERIAL NUMBER PLATE AND ITS LOCATION ................. 1-6 SERVICE METER LOCATION ........................1-7 YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR ..............
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FOREWORD CONTENTS BASIC OPERATION OF MACHINE MONITDR..................3-5 BASIC CHECK ITEMS..........................3-7 EMERGENCY STOP ITEM ........................3-11 METER DISPLAY PORTION........................3-13 MONITOR SWITCH ..........................3-17 SWITCHES ............................... 3-28 CONTROL LEVERS, PEDALS ......................... 3-33 CEILING WINDOW........................... 3-36 FRONT WINDOW............................. 3-37 EMERGENCY EXIT FROM OPERATOR'S CAB ..................3-42 DOOR LOCK ............................
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FOREWORD CONTENTS LOADING AND UNLOADING WITH TRAILER ..................3-120 LIFTING MACHINE..........................3-127 COLD WEATHER OPERATION ........................3-129 COLD WEATHER OPERATION INFORMATION................... 3-129 AFTER DAILY WORK COMPLETION ....................3-131 AFTER COLD WEATHER SEASON ...................... 3-132 LONG TERM STORAGE ..........................3-133 BEFORE STORAGE..........................3-133 DURING STORAGE ..........................
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SAFETY WARNING Please read and make sure that you fully understand pre- cautions discribed in this manual and the safety labels on the machine. When operating or servicing the machine, always follow these precaustions strictly.
SAFETY SAFETY INFORMATION SAFETY INFORMATION POSITION FOR ATTACHING SAFETY LABELS ....................2-4 POSITION FOR ATTACHING SAFETY LABELS .................... 2-4 SAFETY LABELS............................. 2-5 SAFETY INFORMATION ............................ 2-10 SAFETY RULES ............................2-10 IF ABNORMALITIES ARE FOUND ......................2-10 WORKING WEAR AND PERSONAL PROTECTIVE ITEMS ..............2-10 FIRE EXTINGUISHER AND FIRST AID KIT ....................
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SAFETY SAFETY INFORMATION SAFETY MACHINE OPERATION ........................2-19 STARTING ENGINE ............................2-19 CHECKS BEFORE STARTING ENGINE ....................2-19 SAFETY RULES FOR STARTING ENGINE .................... 2-20 STARTING ENGINE IN COLD WEATHER ....................2-20 OPERATION..............................2-21 CHECKS AFTER STARTING ENGINE ....................2-21 SAFETY RULES FOR CHANGING MACHINE DIRECTIONS ..............
If the labels are damaged, lost, or cannot be read properly, replace them with new ones. For details of the part numbers for the labels, see this manual or the actual label, and place an order with Komatsu distributor. POSITION FOR ATTACHING SAFETY LABELS...
SAFETY POSITION FOR ATTACHING SAFETY LABELS SAFETY LABELS 20U-00-21440 (1) Precautions for operation, inspection and (2) Precautions for before operation (09802-03000) maintenance (09651-A0481) 09651-A0481 09802-03000 (3) Warning for leaving operator's seat (4) Warnings for high voltage (09801-A0481) (09654-A0481) 09801-A0481 09654-A0481...
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SAFETY POSITION FOR ATTACHING SAFETY LABELS (5) Warnings when opening front window (6) Precautions for opetating mode (09839-03000) WARNING To avoid personal injury caused by misoperation, please confirm the operating mode of the machine during operation. Please confirm the sorrounding parts when confirming the running conditions of the machine, and operate slowly.
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SAFETY POSITION FOR ATTACHING SAFETY LABELS (9) Precautions when handling accumulator (10) Precautions when adjusting track tension (09659-A057B) (09657-A0881) (11) Precautions when handling cable (09808-A0881) (12) Stop rotation when performing testing and adjusting (09667-A0481)
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SAFETY POSITION FOR ATTACHING SAFETY LABELS (13) Explanation of methods for emergency escape (14) Roll-over precautions (09805-A0881) (20Y-00-D1240) (15) Roll-over precautions (09805-C0481) (16) Prohibited to enter within swing range (09133-A3281)
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SAFETY POSITION FOR ATTACHING SAFETY LABELS (17) Beware of equipment (09134-A1681)
SAFETY SAFETY INFORMATION SAFETY INFORMATION SAFETY RULES Only trained and authorized personnel can operate and maintain the machine. Follow all safety rules, precautions and instructions when operating or performing maintenance on the machine. If you are under the influence of alcohol or medication, your ability to safely operate or repair your machine may be severly impaired putting yourself and everyone else on your jobsite in danger.
SAFETY SAFETY INFORMATION SAFETY EQUIPMENT Be sure that all guards and covers are in their proper position. Have guards and covers repaired immediately if they are damaged. Understand the method of use of safety features and use them properly. Never remove any safety features. Always keep them in good operating condition. KEEP MACHINE CLEAN If water gets into the electrical system, there is a hazard that it will cause malfunctions or misoperation.
SAFETY SAFETY INFORMATION When leaving the machine, always lower the work equip- ment completely to the ground, set safety lock lever (1) securely to the LOCK position, then stop the engine. Use the key to lock all the equipment. Always remove the key, take it with you, and keep it in the specified place.
SAFETY SAFETY INFORMATION MOUNTING AND DISMOUNTING Never jump on or off the machine. Never get on or off a moving machine. If the machine starts to move when there is no operator on the machine, do not jump on to the machine and try to stop it.
SAFETY SAFETY INFORMATION FIRE PREVENTION AND EXPLOSION PREVENTION Fire caused by fuel or oil Fuel, oil, antifreeze, and window washer liquid are particu- larly flammable and can be hazardous. To prevent fire, always observe the following: Do not smoke or use any flame near fuel or oil. Stop the engine before refueling.
Always contact your Komatsu distributor for advice. ATTACHMENT INSTALLATION When installing optional parts or attachments, there may be problems with safety or legal restrictions, so please contact your Komatsu distributor for advice.
Any modification mode without authorization from Komatsu can create hazards. Before making a modification, consult your Komatsu distributor. Komatsu will not be responsible for any injuries, accidents, or product failures resulting from modifications made without authorization from Komatsu. SAFETY AT JOBSITE Before starting operations, thoroughly check the area for any unusual conditions that could be dangerous.
SAFETY SAFETY INFORMATION DISTANCE TO HIGH VOLTAGE CABLES Do not travel or operate the machine near electric cables. There is a hazard of electric shock, which may cause serious injury or property damage. On jobsites where the machine may go close to electric cables, always do as follows. Before starting work near electric cables, inform the local power company of the work to be performed, and ask them to take the necessary action.
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