Hitachi ZX70-3 85US-3 Hydraulic Excavator Complete Workshop Service Repair Manual
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INTRODUCTION
IN-01
ADDITIONAL REFERENCES
Please refer to the other materials (operators
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/cm
2
, 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/cm
2
10.197 Pressure
MPa psi 145.0
kW PS 1.360 Power
kW HP 1.341
Temperature C F C 1.8+32
km/h mph 0.6214 Velocity
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 0.03937 Length
mm ft 0.003281
L US gal 0.2642
L US qt 1.057
Volume
m
3
yd
3
1.308
Weight kg lb 2.205
N kgf 0.10197 Force
N lbf 0.2248
N m kgf m 1.0197 Torque
N m lbf ft 0.7375
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SECTION AND GROUP
CONTENTS
TECHNICAL MANUAL
(Operational Principle)
SECTION 1 GENERAL
Group 1 Specifications
Group 2 Component Layout
Group 3 Component Specifications
SECTION 2 SYSTEM
Group 1 Controller
Group 2 Control System
Group 3 Hydraulic System
Group 4 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 Others (Upperstructure)
Group 7 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 Monitor Unit
Group 3 Dr. ZX
Group 4 ICF
Group 5 Component Layout
Group 6 Troubleshooting A
Group 7 Troubleshooting B
Group 8 Electrical System Inspection
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What's Included?
Lifetime Access
Fast Download Speeds
Offline Viewing
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Full Search Facility
Print one or all pages of your manual
$41.99
Thank you for considering this comprehensive Service Repair Workshop Manual for the Hitachi ZX70-3 85US-3 Hydraulic Excavator.
This manual is an invaluable resource for both professional mechanics and DIY enthusiasts, covering every service and repair procedure with easy-to-follow step-by-step instructions and detailed pictures.
By utilizing this manual, you can save a substantial amount of money by performing your own repairs. It provides the flexibility to print specific pages, chapters, or the entire manual, and can also be saved to your tablet or smartphone for easy access.
Models Covered:
- All Models/Engines/Trim/Transmissions Types Are Covered
Contents:
- This high-quality Service Repair Workshop Manual encompasses all repair procedures from A-Z, ensuring that every repair and service procedure is comprehensively addressed.
Computer Requirements:
- This manual is compatible with all PC & MAC Computers, tablets, and mobile phones. The only software required is Adobe Reader, which is typically pre-installed on most computers or can be downloaded for free.
Delivery:
- Upon payment confirmation via Visa, MasterCard, or PayPal, the manual will be instantly emailed to the address provided during checkout.
Customer satisfaction is guaranteed with this manual, providing a reliable and comprehensive resource for all your Hitachi ZX70-3 85US-3 Hydraulic Excavator service and repair needs.
