Hitachi ZX 29U-3 Manual de usuario

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INTRODUCTION

IN-01

TO THE READER

•This manual is written for an experienced technician

to provide technical information needed to maintain

and repair this machine.

•Be sure to thoroughly read this manual for cor-

rect product information and service procedures.

•If you have any questions or comments, at if you

found any errors regarding the contents of this

manual, please contact using “Service Manual

Revision Request Form” at the end of this man-

ual.

(Note: Do not tear off the form. Copy it for us-

age.):

Publications Marketing & Product Support

Hitachi Construction Machinery Co. Ltd.

TEL:81-29-832-7084

FAX:81-29-831-1162

E-mail: [email protected]

ADDITIONAL REFERENCES

•Please refer to the other materials (operator’s

manual, parts catalog, engine technical material

and Hitachi training material etc.) in addition to this

manual.

MANUAL COMPOSITION

•This manual consists the Technical Manual and the

Workshop Manual.

•Information included in the Technical Manual:

technical information needed for redelivery and

delivery, operation and activation of all devices

and systems, operational performance tests, and

troubleshooting procedures.

•Information included in the Workshop Manual:

technical information needed for maintenance

and repair of the machine, tools and devices

needed for maintenance and repair, maintenance

standards, and removal/installation and assem-

ble/disassemble procedures.

PAGE NUMBER

•Each page has a number, located on the center

lower part of the page, and each number contains

the following information:

Example : T 1-3-5

Consecutive Page Number for Each Group

Group Number

Section Number

T: Technical Manual W: Workshop Manual

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INTRODUCTION

IN-02

SAFETY ALERT SYMBOL AND HEADLINE

NOTATIONS

In this manual, the following safety alert symbol and

signal words are used to alert the reader to the

potential for personal injury of machine damage.

This is the safety alert symbol. When you see this

symbol, be alert to the potential for personal injury.

Never fail to follow the safety instructions prescribed

along with the safety alert symbol.

The safety alert symbol is also used to draw attention

to component/part weights.

To avoid injury and damage, be sure to use appropri-

ate lifting techniques and equipment when lifting

heavy parts.

•CAUTION:

Indicated potentially hazardous situation which

could, if not avoided, result in personal injury or

death.

•IMPORTANT:

Indicates a situation which, if not conformed to the

instructions, could result in damage to the machine.

•NOTE:

Indicates supplementary technical information or

know-how.

UNITS USED

•SI Units (International System of Units) are used in

this manual.

MKSA system units and English units are also

indicated in parenthheses just behind SI units.

Example : 24.5 MPa (250 kgf/cm2, 3560 psi)

A table for conversion from SI units to other system

units is shown below for reference purposees.

Quantity To Convert

From Into Multiply By

MPa kgf/cm210.197Pressure

MPa psi 145.0

kW PS 1.360Power

kW HP 1.341

Temperature °C °F °C×1.8+32

km/h mph 0.6214Velocity

min-1 rpm 1.0

Flow rate L/min US gpm 0.2642

mL/rev cc/rev 1.0

Quantity To Convert

From Into Multiply By

mm in 0.03937Length

mm ft 0.003281

L US gal 0.2642

L US qt 1.057

Volume

m3yd31.308

Weight kg lb 2.205

N kgf 0.10197Force

N lbf 0.2248

N⋅m kgf⋅m 1.0197Torque

N⋅m lbf⋅ft 0.7375

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SAFETY

SA-1

RECOGNIZE SAFETY INFORMATION

•These are the SAFETY ALERT SYMBOLS.

• When you see these symbols on your machine or in

this manual, be alert to the potential for personal injury.

• Follow recommended precautions and safe operating

practices.

SA-688

UNDERSTAND SIGNAL WORDS

•On machine safety signs, signal words designating the

degree or level of hazard - DANGER, WARNING, or

CAUTION - are used with the safety alert symbol.

• DANGER indicates an imminently hazardous situation

which, if not avoided, will result in death or serious in-

jury.

• WARNING indicates a potentially hazardous situation

which, if not avoided, could result in death or serious

injury.

• CAUTION indicates a potentially hazardous situation

which, if not avoided, may result in minor or moderate

injury.

• DANGER or WARNING safety signs are located near

specific hazards. General precautions are listed on

CAUTION safety signs.

• Some safety signs do not use any of the designated

signal words above after the safety alert symbol are

occasionally used on this machine.

•To avoid confusing machine protection with personal

safety messages, a signal word IMPORTANT indicates a

situation which, if not avoided, could result in damage to

the machine.

•NOTE indicates an additional explanation for an

element of information.

SA-1223

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SAFETY

SA-2

FOLLOW SAFETY INSTRUCTIONS

•Carefully read and follow all safety signs on the machine

as well as all safety messages in this manual.

•Safety signs must be installed, maintained and replaced

if damaged.

• If a safety sign or this manual is damaged or missing,

order a replacement from your authorized dealer in the

same way you order other replacement parts (be sure

to state machine model and serial number when or-

dering).

•Allow only properly trained, qualified, authorized per-

sonnel to operate the machine.

•Learn how to correctly operate and service the machine.

•Keep your machine in proper working condition.

•Always operate the machine within the specification.

• Unauthorized modifications of the machine may impair

the functions and/or safety and affect machine life and

the warranty will become void.

•The safety messages in this SAFETY chapter are in-

tended to illustrate basic safety procedures of machines.

However it is impossible for these safety messages to

cover every possible hazardous situation you may en-

counter. If you have any questions concerning safety,

you should first consult your supervisor and/or your au-

thorized dealer before operating or performing mainte-

nance work on the machine.

SA-003

PREPARE FOR EMERGENCIES

•Be prepared if a fire starts or if an accident occurs.

• Keep a first aid kit and fire extinguisher on hand.

• Thoroughly read and understand the label attached on

the fire extinguisher and use it properly.

• To ensure that a fire extinguisher can be always used

when necessary, check and service the fire extin-

guisher at the recommended intervals as specified in

the fire-extinguisher manual.

• Establish emergency procedure guidelines to cope

with any fire or accidents which may occur.

• Keep emergency numbers for doctors, ambulance

service, hospitals, and fire department posted near

your telephone.

SA-437

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SAFETY

SA-3

WEAR PROTECTIVE CLOTHING

•Wear close fitting clothing and safety equipment appro-

priate to the job.

You may need:

A hard hat

Safety belt

Safety shoes

Safety glasses, goggles, or face shield

Heavy gloves

Hearing protection

Reflective clothing

Wet weather gear

Respirator or filter mask.

Be sure to wear the correct equipment and clothing

for the job. Do not take any chances.

• Avoid wearing loose clothing, jewelry, or other items

that can catch on control levers or other parts of the

machine.

•Operating equipment safely requires the full attention of

the operator. Do not wear radio or music headphones

while operating the machine.

SA-438

PROTECT AGAINST NOISE

•Prolonged exposure to loud noise can cause impairment

or loss of hearing.

• Wear a suitable hearing protective device such as

earmuffs or earplugs to protect against objectionable

or uncomfortably loud noises.

SA-434

INSPECT MACHINE

•If any abnormality is found, be sure to repair it immedi-

ately before operating the machine.

• In the walk-around inspection, be sure to cover all

points described in the “PRE-START INSPECTION”

chapter in the operator’s manual.

SA-435

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SAFETY

SA-4

TIDY UP INSIDE OPERATOR’S SPACE

•Always keep inside the cab clean by observing instruc-

tions below, to prevent any personal accidents from oc-

curring.

•Remove mud and/or oily material from the shoe soles

before entering the operator’s space. If pedals are oper-

ated without removing mud or oily matter, the foot may

slip off the pedal, possibly creating a hazardous situa-

tion.

•Do not leave parts and/or tools around the operator’s

seat.

•Do not keep a transparent water bottle in the cab. The

transparent water bottle may concentrate the sun light

like a lens, possibly causing a fire.

•Do not wear radio or music headphones and do not use

a cell phone while traveling or operating the machine.

•Never allow hazardous materials such as combustible

and/or explosive material in the operator’s space.

•Do not leave cigarette lighters in the cab. If the tem-

perature in the cab increases, the lighter may explode.

USE HANDHOLDS AND STEPS

•Falling is one of the major causes of personal injury.

• When you get on and off the machine, always face the

machine.

• Maintain a three-point contact with the steps and

handrails.

• Do not use any controls as handholds.

• Never jump on or off the machine. Never mount or

dismount a moving machine.

• In case adhered slippery material such as oil, grease,

or mud is present on steps, handrails, or platforms,

thoroughly remove such material.

SA-439

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SAFETY

SA-5

ADJUST THE OPERATOR'S SEAT

•A poorly adjusted seat for either the operator or for the

work at hand may quickly fatigue the operator leading to

mis-operation of the machine.

• The seat should be adjusted whenever the operator for

the machine changes.

• The operator should be able to fully depress the ped-

als and to correctly operate the control levers with his

back firmly against the seat back.

• If not, readjust the seat forward or backward, and

check again.

SA-378

ENSURE SAFETY BEFORE RISING FROM OR

LEAVING OPERATOR’S SEAT

•Before rising from the operator’s seat to open/close cab

front window or to adjust the seat position, be sure to first

lower the front attachment to the ground and then move

the pilot control shut-off lever to the LOCK position.

Failure to do so may allow the machine to unexpectedly

move when a body part unintentionally comes in contact

with a control lever, possibly resulting in serious personal

injury or death.

•Before leaving the machine, be sure to first lower the

front attachment to the ground and then move the pilot

control shut-off lever to the LOCK position. Turn the key

switch OFF to stop the engine.

•Before leaving the machine, close all windows, doors,

and access covers and lock them up.

FASTEN YOUR SEAT BELT

•If the machine should overturn, the operator may be-

come injured and/or thrown from the cab. Additionally

the operator may be crushed by the overturning machine,

resulting in serious injury or death.

• Be sure to remain seated with the seat belt securely

fastened whenever operating the machine.

• Prior to operating the machine, thoroughly examine

webbing, buckle and attaching hardware. If any item is

damaged or worn, replace the seat belt or component

before operating the machine. Replace the seat belt at

least once every 3 years regardless of appearance

SA-237

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SAFETY

SA-6

MOVE AND OPERATE MACHINE SAFELY

•Always be aware that there is a potential danger around

the machine while operating the machine.

• Take extra care not to run over bystanders. Confirm

the location of bystanders before moving, swinging, or

operating the machine.

• Always keep the travel alarm and horn in working

condition (if equipped).

• Before starting to move or operate the machine, sound

the travel alarm and horn to alert bystanders.

• Use a signal person when moving, swinging, or oper-

ating the machine in congested areas. Locate the

signal person so that the operator can always witness

the signal person.

• Coordinate the meanings of all safety signs, hand

signals and marks before starting the machine. Ap-

point a person who is responsible to make a signal

and/or guidance.

• Never allow any persons or obstacles to enter the

machine operation areas.

• Use appropriate illuminations.

SA-1291

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