TEN00466-01 PC78US-8 CRAWLER EXCAVATOR

COVER

TEN00466-01 HYDRAULIC EXCAVATOR PC78US -8 SERIAL NUMBERS 16029 and up 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. Komatsu has Operation & Maintenance Manuals written in some other languages. If a foreign language manual is necessary, contact your local distributor for availability. WARNIN WARNIN NOTICE NOTICE

Page 1

BEFORE READING THIS MANUAL

. FOREWORD BEFORE READING THIS MANUAL BEFORE READING THIS MANUAL Read, understand and follow all precautions and warnings in this manual and on the machine before performing is used. 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: A magazine box provided on the left side of operator's seat details information lead to devices and product Komatsu 1 - 2 This manual gives details of the operation and methods of inspection and maintenance for this machine be obeyed in order to use the machine safely.

Most accidents are cau sed by the failure to follow fundame rules for the operat ion and maintenance of machines. operation and main tenance. Failure to do so may result in serious inj Komatsu cannot p redict every circumstance that might involve a p otential hazard when the machin Therefore, the safe ty messages in this manual and on the machine m ay not include all possible safety pr If you carry out an y operation, inspection, or maintenance under con ditions that are not described in th understand that it i s your responsibility to take the necessary precaut ions to ensure safety. In no event s or others engage i n the prohibited uses or actions described in this m anual.

Improper operation and ma of the machine can be hazardous and could result in serious injury o r death. If you sell the mac hine, be sure to give this manual to the new owner If this manual is lo st or damaged, contact your distributor immediate ly to arrange for its replacement. regarding the mach ine serial No. you will need to provide your Komats u distributor, see "YOUR MACHIN NUMBERS AND D ISTRIBUTOR (PAGE 1-6)". This manual uses t he international units (SI) for units of measuremen t.

For reference, units that have be the past are given The explanations, values, and illustrations in this manual have bee n prepared based on the latest i s in the design of this machine m available as of the date of its publication. Continuing improvement additional changes that are not reflected in this manual. Consult Kom atsu or your Komatsu distributor fo available informati on concerning your machine or with questions reg arding information contained in this The numbers in circles in the illustrations correspond to the numb (For example:1 Komatsu delivers machines that comply with all applicable regulation s and standards of the country to w been shipped.

If t his machine has been purchased in another cou ntry, it may lack certain safety de specifications that are necessary for use in your country. If there i applicable standards and regulations of your c perating the machine. s any question about whether yo complies with the ountry, consult Komatsu or your distributor before o

Page 3

SAFETY INFORMATION

. FOREWORD SAFETY INFORMATION SAFETY INFORMATION followed. This hazardous situation which, if not avoided, will This signal word indicates a potentially hazardous situation which, if not avoided, could This signal word indicates a potentially hazardous situation exists which, if not avoided, The following are used to alert you to information that must be followed to avoid damage to the machine. 1 - 3 To enable you to use the machine safel y, and to prev ent injury to operators , service personnel or bystanders, the warnings the machi always To i dentify important safety messages in the manual an d on the m achine labels, the following sig nal words are used.

The Alert Symbol" messages on machines, in manuals, and elsewhere. When you see this symbol, be al ert to the risk of personal inj ury or deat h. Follow t he instructions in th e safety message. imminently ult in death o r serious injury ult in death o r serious injury y result in mi nor or moderat signal word s precaution i s given where the machi ne may be damaged or the ser vice life reduce d if precaution is not followed. s word is use d for informati on that is u seful t o know.

Page 4

PROTECTIVE STRUCTURE

. FOREWORD INTRODUCTION INTRODUCTION 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. VISIBILITY FROM OPERATOR'S SEAT This machine complies with the visibility standard (ISO 5006). This machine maintains a close visibility of a height of 1.5 m at a point 1 m away from the outside surface of the machine, and a visibility for a circumference of 12 m.

PROTECTIVE STRUCTURE This machine is ROPS compliant to ISO12117-2:2008 when a ROPS plate is installed - see "LOCATION OF SAFETY LABELS (PAGE 2-6)" for location of ROPS plate. 1 - 4 USE OF MACHINE This Komatsu machine is designed to be used mainly fo r the following work: Digging work Leveling work Ditching work Loading work Demolition work See the section "RECOMMENDED for further details.

Page 5