HYDRAULIC EXCAVATOR TEN00135-08 PC800 -8 PC800LC -8 PC800SE -8 PC850 -8 PC850SE -8 SERIAL NUMBERS PC800-50001 PC850-10001 and up Komatsu has Operation & Maintenance Manuals written in some other languages. If a foreign language manual is necessary, contact your local distributor for availability. NOTICE 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 near the machine for reference and periodically reviewed by all personnel who will come into contact with it. WARNING
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FOREWORD BEFORE READING THIS MANUAL BEFORE READING THIS MANUAL This manual gives details of the operation and methods of inspection and maintenance for this machine that must be obeyed in order to use the machine safely. Most accidents are caused by the failure to follow fundamental safety rules for the operation and maintenance of machines. Read, understand and follow all precautions and warnings in this manual and on the machine before performing operation and maintenance. Failure to do so may result in serious injury or death. Komatsu cannot predict every circumstance that might involve a potential hazard when the machine is used. Therefore, the safety messages in this manual and on the machine may not include all possible safety precautions. If you carry out any operation, inspection, or maintenance under conditions that are not described in this manual, understand that it is your responsibility to take the necessary precautions to ensure safety. In no event should you or others engage in the prohibited uses or actions described in this manual. Improper operation and maintenance of the machine can be hazardous and could result in serious injury or death. If you sell the machine, be sure to give this manual to the new owner together with the machine. Always keep this Operation and Maintenance Manual in the location shown on the right so that all relevant personnel can read it at any time. Storage location for the Operation and Maintenance Manual: magazine box on the left side of the operator's seat. If this manual is lost or damaged, contact your distributor immediately to arrange for its replacement. For details regarding the machine serial No. you will need to provide your Komatsu distributor, see "YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR (PAGE 1-7)". This manual uses the international units (SI) for units of measurement. For reference, units that have been used in the past are given in ( ). The explanations, values, and illustrations in this manual have been prepared based on the latest information available as of the date of its publication. Continuing improvements in the design of this machine may lead to additional changes that are not reflected in this manual. Consult Komatsu or your Komatsu distributor for the latest available information concerning your machine or with questions regarding information contained in this manual. The numbers in circles in the illustrations correspond to the numbers in ( ) in the text. (For example: 1 → (1)) 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, 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. 1 - 2
FOREWORD SAFETY INFORMATION SAFETY INFORMATION To enable you to use the machine safely, and to prevent injury to operators, service personnel or bystanders, the precautions and warnings included in this manual and the safety signs attached to the machine must always be followed. To identify important safety messages in the manual and on the machine labels, the following signal words are used. The "Safety Alert Symbol" identifies important safety messages on machines, in manuals, and elsewhere. When you see this symbol, be alert to the risk of personal injury or death. Follow the instructions in the safety message. This signal word indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. This signal word indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. This signal word indicates a potentially hazardous situation exists which, if not avoided, may result in minor or moderate injury. The following signal words are used to alert you to information that must be followed to avoid damage to the machine. This precaution is given where the machine may be damaged or the service life reduced if the precaution is not followed. This word is used for information that is useful to know. 1 - 3
FOREWORD INTRODUCTION INTRODUCTION USE OF MACHINE 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 "RECOMMENDED APPLICATIONS (PAGE 3-131)" for further details. DIRECTIONS OF MACHINE (A) (B) (C) (D) Front Rear Left Right (E) (F) Operator's seat 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. 1 - 4
This manual is suitable for individuals ranging from first-time owners to professional technicians. It is designed in an easy-to-read format and provides all the necessary information to perform procedures accurately. Keeping this service manual accessible and referring to it regularly is recommended. Regular and preventive maintenance outlined in the manual can help save time and money by preventing premature failure and unnecessary repairs.
Models Covered:
Komatsu PC800-8 Hydraulic Excavator S/N 50001 and up
Komatsu PC800LC-8 Hydraulic Excavator S/N 50001 and up