HITACHI ZX 330 330LC 350LC H, N 350H 370MTH Service Manual
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INTRODUCTION
IN-01
ADDITIONAL REFERENCES
Please refer to the materials listed below in addition
to this manual.
The Operators 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.
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
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/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 C1.8+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
INTRODUCTION
IN-04
(Blank)
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 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 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 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
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 Shockless Valve
Group 10 Solenoid Valve Unit
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
1HHT-1-1
SECTION 1
GENERAL
CONTENTS
Group 1 Specifications
Specifications ............................................ T1-1-1
Working Ranges ....................................... T1-1-5
Group 2 Component Layout
Main Component Layout ........................... T1-2-1
Electrical Component Layout
(Over view) ............................................... T1-2-2
Electrical System(Relays) ......................... T1-2-3
Electrical System
(Monitors and Switches) ........................... T1-2-4
Engine ...................................................... T1-2-5
Pump Device ............................................ T1-2-5
Swing Device ............................................ T1-2-5
Control Valve ............................................ T1-2-6
Travel Device ............................................ T1-2-6
Solenoid Valve Unit ................................... T1-2-7
Shockless Valve ........................................ T1-2-7
Positioning Control Valve ........................ T1-2-7
Group 3 Component Specifications
Engine ...................................................... T1-3-1
Engine Accessories .................................. T1-3-4
Hydraulic Component ............................... T1-3-5
Electrical Component ................................ T1-3-8
1HHT-1-2
(Blank)
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What's Included?
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Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$48.99
This service manual set for the HITACHI ZAXIS 330 330LC 350LC 350LCH 350LCN 350H 370MTH EXCAVATOR consists of three main portions:
- Technical Manual (Operation Principle)
- Technical Manual (Troubleshooting)
- Workshop Manual
The Technical Manual (Operation Principle) includes technical information required for redelivery, delivery, operation, and activation of all devices and systems. The Technical Manual (Troubleshooting) contains technical information needed for operational performance tests and troubleshooting procedures. The Workshop Manual provides technical information for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal/installation and assemble/disassemble procedures.
The Workshop Manual includes the following sections:
- INTRODUCTION
- SAFETY
- GENERAL INFORMATION
- UPPERSTRUCTURE
- UNDERCARRIAGE
- FRONT ATTACHMENT
- ENGINE AND ACCESSORY
The Troubleshooting Manual contains the following sections:
- INTRODUCTION
- SAFETY
- OPERATION PERFORMANCE TEST
- TROUBLESHOOTING
- SCHEMATIC
The Operation Principle Manual includes the following sections:
- INTRODUCTION
- GENERAL
- SYSTEM
- COMPONENT OPERATION
The service manual (Manual #KM1HHE02) consists of the following three separate volumes:
- Technical Manual (Operation Principle): Vol.#TO1HHE02
- Technical Manual (Troubleshooting): Vol.#TT1HHE02
- Workshop Manual: Vol.#W1HHE00
Additionally, it includes the circuit diagram TT1HHE02CIR.
File Format: .PDF
Total pages: 1272
Size: 68Mb
Manual Language: English
This manual contains comprehensive information, specs, diagrams, actual real photo illustrations, and schemes for the specified model. It is a valuable resource for diagnosing, repairing, and maintaining Hitachi machinery. The digital format allows for space savings and enables the use of the Search feature in Acrobat to find specific information and print out exact pages as needed.
If you are interested in other guides, click on the "Recipes / Manuals" section in the upper right corner. Feel free to contact me if you have any questions or if you are looking for a specific manual. Have a great day!
