Komatsu PC138USLC Handbuch

HYDRAULIC

EXCAVATOR

TEN00189-01

PC138US -8

PC138USLC -8

SERIAL NUMBERS PC138US- 20001

PC138USLC- 20001 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 .

WARNING

Komatsu has Operation & Maintenance Manuals written

in some other languages. if a foreign language manual

is necessary, contact your local distributor for

availability.

NOTICE

1 - 1

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

Before beginning operation or maintenance, operators and maintenance personnel must always observe the following points.

Read this manual thoroughly and understand its contents fully.

Read the safety messages and safety labels given in this manual carefully so that they should be understood fully.

Keep this manual at the storage location for the Operation and Maintenance Manual given below so that all personnel involved

in working on the machine can consult it periodically.

In case this manual should be lost or damaged, immediately contact Komatsu or your Komatsu distributor to obtain a new copy.

When you sell the machine, make sure that this manual should be provided to the new owner together with the machine.

In this manual, measurements are expressed in international standard units (SI). For the reference purpose, weight units used in

the past are also displayed in ( ).

Storage location for the Operation and Maintenance Manual:

Magazine box at rear of cab

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FOREWORD FOREWORD

1 - 3

FOREWORD

1 - 4

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 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.

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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: 1J(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 "RECOMMENDED APPLICATIONS (PAGE 3-168)" 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.

BREAKING-IN THE NEW MACHINE

NOTICE

Your Komatsu machine has been thoroughly adjusted and tested before shipment from the factory. However, operating the

machine under full load before breaking the machine in can adversely affect the performance and shorten the machine life.

Be sure to break in the machine for the initial 100 hours (as indicated on the service meter).

Make sure that you fully understand the content of this manual, and pay careful attention to the following points when

breaking in the machine.

Run the engine at idle for 15 seconds after starting it. During this time, do not operate the control levers or fuel

control dial.

Idle the engine for 5 minutes after starting it up.

Avoid operation with heavy loads or at high speeds.

Immediately after starting the engine, avoid sudden starts, sudden acceleration, unnecessary sudden stops, and

sudden changes in direction.

1 - 7

FOREWORD

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 bottom right of the operator's cab

The design of the nameplate differs according to the territory.

EPA REGULATIONS, ENGINE NUMBER PLATE

This is on the fuel main filter bracket.

EPA: Environmental Protection Agency, U.S.A.

1 - 8

FOREWORD PRODUCT INFORMATION

SERVICE METER LOCATION

On top of the machine monitor

YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR

Machine serial No.

Engine serial No.

Product identification number (PIN)

Distributor name

Address

Service Personnel

Phone/Fax

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