Hitachi Zaxis 200 Manuale utente

(Operational Principle)

Manual No.:KM-178-E

Vol. No.:TO178-E-04

Technical Manual

Excavator

PRINTED IN SINGAPORE (PS)

200·225·230·270 class Excavator Technical Manual (Operational Principle)

200 class

200•200LC•210H•210LCH•210•210LC•210N•240

225 class

225US•225USLC•225USR•225USRLC

230 class

230•230LC•240H•240LCH•250•250LC•250LCN

270 class

270•270LC•280LC•280LCN

Service Manual (Manual No. KM-178-E) consists of the following three separate volumes;

Technical Manual (Operational Principle) :Vol. No.TO178-E

Technical Manual (Troubleshooting) :Vol. No.

Workshop Manual :Vol. No.W178-E

178-E

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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: 81-298-32-7173

FAX: 81-298-31-1162

ADDITIONAL REFERENCES

• Please refer to the materials listed below in addition

to this manual.

• The Operator’s Manual

• The Parts Catalog

• Operation Manual of the Engine

• Parts Catalog of the Engine

• Hitachi Training Material

MANUAL COMPOSITION

• This manual consists of three portions: the Techni-

cal Manual (Operational Principle), the Technical

Manual (Troubleshooting) and the Workshop Man-

ual.

• Information included in the Technical Manual

(Operational Principle):

technical information needed for redelivery and

delivery, operation and activation of all devices

and systems.

• Information included in the Technical Manual

(Troubleshooting):

technical information needed for operational per-

formance 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.

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INTRODUCTION

IN-02

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

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.

Consecutive Page Number for Each Group

Group Number

Section Number

T: Technical Manual W: Workshop Manual

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INTRODUCTION

IN-03

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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INTRODUCTION

IN-04

Hitachi machine models are classified into 4 classes and 1 model as

shown in the table below. When referring to the texts and/or illustrations

indicated with the applicable machine class names in this manual,

check that the machine models concerned are included using this ta-

ble.

Class

ZX200 Class ZAXIS200, 200LC, 210H, 210LCH, 210, 210LC, 210N, 240

ZX225 Class ZAXIS225USR, 225USRLC, 225US, 225USLC

ZX230 Class ZAXIS230, 230LC, 240H, 240LCH, 250, 250LC, 250LCN

ZX270 Class ZAXIS270, 270LC, 280LC, 280LCN

Model

Std. Model 200, 200LC, 210, 210LC, 210H, 210LCH, 210N, 225USR, 225USRLC,

225US, 225USLC, 230, 230LC, 240, 240H, 240LCH, 250, 250LC, 250LCN, 270,

270LC, 280LC, 280LCN

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SECTION AND GROUP

CONTENTS

TECHNICAL MANUAL

(Operational Principle)

All information, illustrations and speci-

fications in this manual are based on

the latest product information available

at the time of publication. The right is

reserved to make changes at any time

without notice.

Hitachi Construction Machinery Co., Ltd.

Tokyo, Japan

SECTION 1 GENERAL

Group 1 Specification

Group 2 Component Layout

Group 3 Component Specifications

SECTION 2 SYSTEM

Group 1 Control System

Group 2 Hydraulic System

Group 3 Electrical System

SECTION 3 COMPONENT OPERATION

Group 1 Pump Device

Group 2 Swing Device

Group 3 Control Valve

Group 4 Pilot Valve

Group 5 Travel Device

Group 6 Signal Control Valve

Group 7 Others(Upperstructure)

Group 8 Others(Undercarriage)

TECHNICAL MANUAL (Troubleshooting)

SECTION 4 OPERATIONAL PER-

FORMANCE TEST

Group 1 Introduction

Group 2 Standard

Group 3 Engine Test

Group 4 Excavator Test

Group 5 Component Test

Group 6 Adjustment

SECTION 5 TROUBLESHOOTING

Group 1 Diagnosing Procedure

Group 2 Component Layout

Group 3 Troubleshooting A

Group 4 Troubleshooting B

Group 5 Troubleshooting C

Group 6 Electrical System Inspection

Group 7 ICX

WORKSHOP MANUAL

SECTION 1 GENERAL INFORMA-

TION

Group 1 Precautions for Disassem-

bling and Assembling

Group 2 Tightening Torque

Group 3 Painting

Group 4 Bleeding Air from Hydrau-

lic Oil Tank

SECTION 2 UPPERSTRUCTURE

Group 1 Cab

Group 2 Counterweight

Group 3 Main Frame

Group 4 Pump Device

Group 5 Control Valve

Group 6 Swing Device

Group 7 Pilot Valve

Group 8 Pilot Shut-Off Valve

Group 9 Signal Control Valve

Group 10 Solenoid Valve

SECTION 3 UNDERCARRIAGE

Group 1 Swing Bearing

Group 2 Travel Device

Group 3 Center Joint

Group 4 Track Adjuster

Group 5 Front Idler

Group 6 Upper and Lower Roller

Group 7 Track

SECTION 4 FRONT ATTACHMENT

Group 1 Front Attachment

Group 2 Cylinder

SECTION 5 ENGINE

←これ以下

記載しない

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178T-1-1

SECTION 1

GENERAL

―CONTENTS―

Group 1 Specifications

Specifications............................................ T1-1-1

Working Ranges ..................................... T1-1-14

Group 2 Component Layout

Main Component Layout ........................... T1-2-1

Electrical Component Layout .................... T1-2-4

(Overview)

Electrical System ..................................... T-1-2-7

(Relays and Related Equipment)

Electrical System ................................... T-1-2-9

(Monitors and Switches)

Pump Device .......................................... T1-2-10

Swing Device .......................................... T1-2-10

Control Valve .......................................... T1-2-11

Signal Control Valve................................ T1-2-11

Solenoid Valve Unit................................. T1-2-11

Travel Device.......................................... T1-2-12

Positioning Control Valve ........................ T1-2-13

Group 3 Component Specifications

Engine ...................................................... T1-3-1

Engine Accessories .................................. T1-3-8

Hydraulic Component ............................... T1-3-9

Electrical Component.............................. T1-3-16

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178T-1-2

(Blank)

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