Komatsu PC40MR-2, PC40MRX-2, PC50MR-2, PC50MRX-2 Operation & Maintenance Manual Excavator Owners Book

SEAM055301T Operation & Maintenance Manual PC40MR -2 PC40MRx -2 PC50MR -2 PC50MRx -2 HYDRAULIC EXCAVATOR SERIAL NUMBERS PC40MR-2 8001 and up PC40MRx-2 8001 and up PC50MR-2 5001 and up PC50MRx-2 5001 and up This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America Corp. It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or improvements at any time without incurring any obligation to install such changes on products sold previously. Due to this continuous program of research and development, revisions may be made to this publication. It is recommended that customers contact their distributor for information on the latest revision. Copyright 2003 Komatsu Printed in U.S.A. Komatsu America Corp. October 2003

FOREWORD FOREWORD FOREWORD This manual provides rules and guidelines which will help you use this machine safely and effectively. The precautions in this manual must be followed at all times when performing operation and maintenance. Most accidents are caused by the failure to follow fundamental safety rules for the operation and maintenance of machines. Accidents can be prevented by knowing beforehand conditions that may cause a hazard when performing operation and maintenance. WARNING Operators and maintenance personnel must always do as follows before beginning operation or maintenance. Always be sure to read and understand this manual thoroughly before performing operation and maintenance. Read the safety messages given in this manual and the safety labels affixed to the machine thoroughly and be sure that you understand them fully. Keep this manual at the storage location for the Operation and Maintenance Manual given below, and have all personnel read it periodically. If this manual has been lost or has become dirty and cannot be read, request a replacement manual immediately from Komatsu or your Komatsu distributor. If you sell the machine, be sure to give this manual to the new owners together with the machine. Komatsu delivers machines that comply with all applicable regulations and standards of the country to which it has been shipped. If this machine has been purchased in another country or purchased from someone in another country, it may lack certain safety devices and specifications that are necessary for use in your country. If there is any question about whether your product complies with the applicable standards and regulations of your country, consult Komatsu or your Komatsu distributor before operating the machine. Storage location for the Operation and Maintenance Manual: Pocket on inside of cover of toolbox under operator's seat 1 - 2

FOREWORD FOREWORD 1 - 3

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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 situations. Signal words The following signal words are used to inform you that there is a potential hazardous situation that may lead to personal injury or damage. In this manual and on machine labels, the following signal words are used to express the potential level of hazard. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. This word is used also to alert against unsafe practices that may cause property damage. Example of safety message using signal word WARNING When standing up from the operator's seat, always place the safety lock lever in the LOCK position. If you accidentally touch the control levers when they are not locked, this may cause a serious injury or death. Other signal words In addition to the above, the following signal words are used to indicate precautions that should be followed to protect the machine or to give information that is useful to know. This word is used for precautions that must be taken to avoid actions which could shorten the life of the machine. This word is used for information that is useful to know. 1 - 5

FOREWORD SAFETY INFORMATION Safety labels Safety labels are affixed to the machine to inform the operator or maintenance worker on the spot when carrying out operation or maintenance of the machine that may involve hazard. This machine uses "Safety labels using words" and "Safety labels using pictograms" to indicate safety procedures. Example of safety label using words Safety labels using pictogram Safety pictograms use a picture to express a level of hazardous condition equivalent to the signal word. These safety pictograms use pictures in order to let the operator or maintenance worker understand the level and type of hazardous condition at all times. Safety pictograms show the type of hazardous condition at the top or left side, and the method of avoiding the hazardous condition at the bottom or right side. In addition, the type of hazardous condition is displayed inside a triangle and the method of avoiding the hazardous condition is shown inside a circle. Komatsu cannot predict every circumstance that might involve a potential hazard in operation and maintenance. Therefore, the safety messages in this manual and on the machine may not include all possible safety precautions. If any procedures or actions not specifically recommended or allowed in this manual are used, it is your responsibility to take the necessary steps to ensure safety. In no event should you engage in prohibited uses or actions described in this manual. The explanations, values, and illustrations in this manual were prepared based on the latest information available at that time. Continuing improvements in the design of this machine can lead to changes in detail which may not be reflected in this manual. Consult Komatsu or your Komatsu distributor for the latest available information of your machine or for questions regarding information in this manual. The numbers in circles in the illustrations correspond to the numbers in ( ) in the text. (For example: 1 -> (1)) 1 - 6

FOREWORD INTRODUCTION INTRODUCTION This Komatsu machine is designed to be used mainly for the following work: Digging work Leveling work Ditching work Loading work Demolition work See the section "WORK POSSIBLE USING COMPACT HYDRAULIC EXCAVATOR (PAGE 3-78)" 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 seat when the operator's seat is facing the front and the sprocket is at the rear of the machine. 1 - 7

FOREWORD PRODUCT INFORMATION PRODUCT INFORMATION When requesting service or ordering replacement parts, please inform your Komatsu distributor of the following items. PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE On the left front of the frame. The design of the nameplate differs according to the territory. ENGINE SERIAL NUMBER PLATE AND ITS LOCATION This is stuck on the intake manifold. 1 - 8

Komatsu PC40MR-2, PC40MRX-2, PC50MR-2, PC50MRX-2 Operation & Maintenance Manual Excavator Owners Book

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