Hitachi Zaxis 330 User manual

(Troubleshooting)
Manual No. : KM-1HH-E
Vol. No. : TT1HH-E-02
Technical Manual
Excavator
PRINTED IN SINGAPORE (PS) 2005.06
330 330LC 350H 350LCH 350LC 350LCN 370MTH Excavator Technical Manual (Troubleshooting)
330 330LC
350H 350LCH
350LC 350LCN
370MTH
Service Manual (Manual No. KM-1HH-E) consists of the following three separate volumes;
Technical Manual (Operational Principle) :Vol.No.TO1HH-E
Technical Manual (Troubleshooting) :Vol.No.TT1HH-E
Workshop Manual :Vol. No.W1HH-E
Zaxis330/350/370-TM/TSh 1/7/05, 16:301

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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: [phone]
FAX: [phone]
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
(Blank)
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SAFETY
SA-1
RECOGNIZE SAFETY INFORMATION
• This is the SAFETY ALERT SYMBOL.
•When you see this symbol on your machine or in
this manual, be alert to the potential for personal
injury.
•Follow recommended precautions and safe
operating practices.
001-E01A-0688 
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 injury.
•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 don’t use any of the
designated signal words above after the safety
alert symbol are occasionally used on this
machine.
• CAUTION also calls attention to safety messages in
this manual.
• 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.
002-E01C-1223
SA-1223

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SAFETY
SA-2
FOLLOW SAFETY INSTRUCTIONS
• Carefully read and follow all safety signs on the
machine and all safety messages in this manual.
• Safety signs should be installed, maintained and
replaced when necessary.
•If a safety sign or this manual is damaged or
missing, order a replacement from your author-
ized dealer in the same way you order other
replacement parts (be sure to state machine
model and serial number when ordering).
• Learn how to operate the machine and its controls
correctly and safely.
• Allow only trained, qualified, authorized personnel
to operate the machine.
• Keep your machine in proper working condition.
•Unauthorized modifications of the machine may
impair its function and/or safety and affect ma-
chine life.
• The safety messages in this SAFETY chapter are
intended to illustrate basic safety procedures of
machines. However it is impossible for these safety
messages to cover every hazardous situation you
may encounter. If you have any questions, you
should first consult your supervisor and/or your au-
thorized dealer before operating or performing
maintenance work on the machine.
003-E01B-0003

SA-003
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SAFETY
SA-3
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 at-
tached on the fire extinguisher to use it properly.
•To ensure that a fire-extinguisher can be always
used when necessary, check and service the
fire-extinguisher at the recommended intervals as
specified in the fire-extinguisher manual.
•Establish emergency procedure guidelines to
cope with fires and accidents.
•Keep emergency numbers for doctors, ambu-
lance service, hospital, and fire department
posted near your telephone.

004-E01A-0437


SA-437

WEAR PROTECTIVE CLOTHING
• Wear close fitting clothing and safety equipment
appropriate to the job.
You may need:
A hard hat
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.

005-E01A-0438

SA-438






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SAFETY
SA-4
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.



006-E01A-0434 
SA-434


INSPECT MACHINE

• Inspect your machine carefully each day or shift by
walking around it before you start it to avoid
personal injury.
•In the walk-around inspection be sure to cover all
points described in the “PRE-START
INSPECTION” chapter in the operator’s manual.


S007-E01A-0435
SA-435
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