Hitachi Ex1900-6 User manual

EM18K-1-8EX1900-6 HYDRAULIC EXCAVATOR OPERATOR’S MANUAL

Serial No 001223 and up

Hydraulic Excavator

PRINTED IN JAPAN (E) 2019, 09

1900-6

This book is printed on recycled paper.

EM18K-1-8

PART NO.

Operator’s Manual

URL:http://www.hitachi-c-m.com

INTRODUCTION

Read this manual carefully to learn how to operate and

service your machine correctly. Failure to do so could

result in personal injury and/or machine damage.

This standard specification machine can be operated

under the following conditions without being modified.

Atmospheric Temperature: -20 °C to 50 °C (-4 °F to 122 °F)

Altitude: 0 m to 2000 m (0 ft to 6600 ft)

In case the machine is used under conditions other than

described above, contact your authorized dealer.

This manual should be considered a permanent part of

your machine and should remain with the machine when

you sell it.

This machine is of metric design. Measurements in this

manual are metric. Use only metric hardware and tools as

specified.

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

this manual.

For reference MKS system units and English units are

also indicated in parentheses after the SI units.

Example : 24.5 MPa (250 kgf/cm², 3550 psi)

Right-hand and left-hand sides are determined by

facing in the direction of forward travel.

Write product identification numbers in the Machine

Numbers section. Accurately record all the numbers

to help in tracing the machine should it be stolen.

Your dealer also needs these numbers when you order

parts. If this manual is kept on the machine, also file the

identification numbers in a secure place off the machine.

Use only diesel fuel with quality specified in JIS K-2204,

EN-590 or ASTM D-975 which contents 15 ppm or lower

sulfur.

Also use fuel that complies with solid contamination level

of class 18/16/13 of ISO4406-1999 (solid contamination

includes dust). If the fuel specified above is not used,

exhaust gas that exceeds the regulation values may be

discharged, causing serious problem on the engine.

Contact your authorized dealer.

Warranty is provided as a part of Hitachi’s support

program for customers who operate and maintain their

equipment as described in this manual. The warranty is

explained on the warranty certificate which you should

have received from your dealer.

All information, illustrations and specifications 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.

This warranty provides you the assurance that Hitachi will

back its products when defects occur within the warranty

period. In some circumstances, Hitachi also provides field

improvements, often without charge to the customer,

even if the product is out of warranty.

Should the equipment be abused or modified to

change its performance beyond the original factory

specifications, the warranty will become void and field

improvements may be denied.

Setting fuel delivery above specifications or otherwise

overpowering machines will result in such action.

Moreover, when replacement parts are required, be sure

to use genuine Hitachi parts. Failure to do so may result in

voiding the warranty and/or denial of field improvements.

The Yellow Pages in this operator’s manual contain

IMPORTANT SAFETY INFORMATION.

Read these pages thoroughly and familiarize yourself

with the safety standards and recommendations set

forth in these yellow pages of the manual.

Follow all safety instructions prior to and while

operating the excavator.

Only qualified, experienced operators officially licensed

(according to local law) should be allowed to operate the

machine.

Moreover, only officially licensed personnel should be

allowed to inspect and service the machine.

Prior to operating this machine, including

communication system, in a country other than a

country of its intended use, it may be necessary to

make modifications to it so that it complies with

the local regulatory standards (including safety

standards) and legal requirements of that particular

country. Please do not export or operate this machine

outside of the country of its intended use until such

compliance has been confirmed.

Please contact Hitachi Construction Machinery Co.,

Ltd. or any of our authorized distributor or dealer if

you have any questions concerning compliance.

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INDEX

MACHINE NUMBERS

SAFETY

SAFETY SIGNS

COMPONENTS NAME

HANDLING LADDER/EMERGENCY ESCAPE DEVICE

OPERATOR’S STATION

BREAK-IN

OPERATING ENGINE

DRIVING MACHINE

OPERATING MACHINE

MAINTENANCE

MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS

STORAGE

TROUBLESHOOTING

SPECIFICATIONS

INDEX

VISIBILITY MAP

TRANSPORTING

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CONTENTS

MACHINE NUMBERS ........................................................................1

SAFETY...............................................................................................S-1

Recognize Safety Information ....................................................S-1

Understand Signal Words.............................................................S-1

Follow Safety Instructions............................................................S-2

Prepare for Emergencies...............................................................S-3

Wear Protective Clothing..............................................................S-3

Protect Against Noise ....................................................................S-3

Inspect Machine ..............................................................................S-4

General Precautions for CAB .......................................................S-4

Use Handholds and Steps ............................................................S-5

Adjust Operator’s Seat...................................................................S-5

Ensure Safety Before Rising from or Leaving Operator’s

Seat .................................................................................................S-5

Fasten Your Seat Belt......................................................................S-6

Move and Operate Machine Safely...........................................S-6

Handle Starting Aids Safely .........................................................S-6

Operate Only from Operator’s Seat ..........................................S-7

Jump Starting ...................................................................................S-7

Precautions for Operations..........................................................S-7

Investigate Job Site Beforehand................................................S-8

Restriction of Attachment Installation ....................................S-9

Provide Signals for Jobs Involving Multiple Machines.......S-9

Confirm Direction of Machine to be Driven ..........................S-9

Drive Machine Safely................................................................... S-10

Avoid Injury from Rollaway Accidents.................................. S-12

Avoid Injury from Back-Over and Swing Accidents.........S-13

Keep Person Clear from Working Area..................................S-14

Never Position Bucket Over Anyone ..................................... S-14

Avoid Undercutting.....................................................................S-14

Avoid Tipping.................................................................................S-15

Never Undercut a High Bank....................................................S-15

Dig with Caution........................................................................... S-16

Operate with Caution ................................................................. S-16

Avoid Power Lines........................................................................S-16

Precautions for Lightning.......................................................... S-17

Object Handling ........................................................................... S-17

Protect Against Flying Debris and Falling Object.............S-18

Park Machine Safely..................................................................... S-19

Handle Fluids Safely – Avoid Fires..........................................S-19

Practice Safe Maintenance........................................................ S-20

Warn Others of Service Work ...................................................S-21

Support Machine Properly........................................................ S-21

Stay Clear of Moving Parts ........................................................ S-22

Prevent Parts from Flying ..........................................................S-22

Avoid Injury from Attachment Falling Accident ...............S-23

Prevent Burns................................................................................. S-23

Replace Rubber Hoses Periodically........................................ S-23

Avoid High-Pressure Fluids....................................................... S-24

Prevent Fires...................................................................................S-25

Evacuating in Case of Fire.......................................................... S-26

Beware of Exhaust Fumes.......................................................... S-27

Precautions for Welding and Grinding ................................. S-27

Avoid Heating Near Pressurized Fluid Lines....................... S-27

Avoid Applying Heat to Lines Containing Flammable

Fluids ...........................................................................................S-27

Precautions for Handling Accumulator................................S-28

Remove Paint Before Welding or Heating...........................S-28

Beware of Asbestos and Silicon Dust and Other

Contamination......................................................................... S-29

Prevent Battery Explosions ....................................................... S-30

Service Air Conditioning System Safely ...............................S-30

Handle Chemical Products Safely........................................... S-31

Dispose of Waste Properly.........................................................S-31

Precautions for Communication Terminal...........................S-31

Precautions for Communication Terminal Equipment

(Optional)................................................................................... S-32

Precautions for WIU (Wireless Interface Unit)

Communication Equipment (Optional).......................... S-34

Machine Fire Suppression......................................................... S-35

VISIBILITY MAP ...........................................................................S-36

SAFETY SIGNS.............................................................................. S-37

COMPONENTS NAME ..................................................................1-1

Components Name ........................................................................1-1

HANDLING LADDER/EMERGENCY ESCAPE DEVICE......1-2

Using Ladder.....................................................................................1-2

Operating Ladder on the Ground..............................................1-3

Extending .....................................................................................1-3

Retracting .....................................................................................1-3

Operating Ladder on the Upper-Structure............................1-3

Extending .....................................................................................1-3

Retracting .....................................................................................1-3

Emergency Escape Device ...........................................................1-4

Emergency Exit ................................................................................1-5

Evacuating in Case of Fire.............................................................1-5

OPERATOR’S STATION.................................................................1-7

Cab Features......................................................................................1-7

Monitor Display................................................................................1-8

Starting Check Screen ...................................................................1-8

Meter Check Screen........................................................................1-9

Tachometer.....................................................................................1-10

Coolant Temperature Gauge.................................................... 1-10

Hydraulic Oil Temperature Gauge..........................................1-10

Fuel Gauge......................................................................................1-10

Engine Oil Pressure Gauge........................................................1-11

Engine Oil Temperature Gauge...............................................1-11

Hour Meter......................................................................................1-11

Warning Indicators.......................................................................1-11

Alternator Indicator.....................................................................1-11

Pump Transmission Oil Level Indicator.................................1-12

Engine Stop Indicator.................................................................1-12

Engine Oil Pressure Indicator...................................................1-12

Coolant Overheat Indicator......................................................1-12

Coolant Level Indicator .............................................................. 1-13

Engine Over Run Indicator........................................................1-13

Fuel Temperature Indicator.......................................................1-13

Hydraulic Oil Level Indicator ....................................................1-13

Stop Valve Indicator.....................................................................1-14

Auto-Lubrication Indicator .......................................................1-14

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CONTENTS

Fast-Filling Indicator....................................................................1-15

Emergency Engine Stop Indicator .........................................1-15

Tension Indicator.......................................................................... 1-15

Electric Lever Indicator...............................................................1-15

Caution Indicators........................................................................1-16

Exhaust Temperature Indicator...............................................1-16

Engine Warning Indicator..........................................................1-16

Hydraulic Oil Overheat Indicator............................................1-16

Pump Contamination Indicator .............................................. 1-16

Ladder Position Indicator ..........................................................1-17

Air Cleaner Restriction Indicator.............................................1-17

Electrical Equipment Box Indicator........................................1-17

Status Indicators...........................................................................1-17

Auto-Idle Indicator.......................................................................1-17

Travel Mode Indicator.................................................................1-18

Prelub Indicator.............................................................................1-18

Left Console....................................................................................1-19

Warning Lamp...............................................................................1-19

Caution Lamp ................................................................................1-19

Key Pad.............................................................................................1-19

Monitor Contrast Switch............................................................1-19

Wiper Switch .................................................................................. 1-20

Washer Switch ...............................................................................1-20

Wiper Delay Selector Switch ....................................................1-20

Air Conditioners............................................................................1-21

Designations and Functions of Controls..............................1-22

Cooling............................................................................................. 1-24

Heating.............................................................................................1-24

Dehumidifying and Heating.....................................................1-24

Defrosting .......................................................................................1-25

Blower Operation Without Cooling or Heating.................1-25

Ventilation Cab..............................................................................1-25

AM/FM Radio Operation............................................................1-26

Controls on the Radio............................................................1-26

Tuning Procedure ...................................................................1-26

Station Presetting Procedure..............................................1-27

Sound Adjustment .................................................................1-27

Digital Clock Setting Procedure.............................................. 1-28

Right Console.................................................................................1-29

Key Switch.......................................................................................1-29

Emergency Engine Stop Switch..............................................1-30

Engine Start Switch......................................................................1-30

Engine Stop Switch......................................................................1-30

Engine Speed Control Dial........................................................1-31

Work Light Switch........................................................................1-32

Dome Light Switch ......................................................................1-33

Maintenance Light Switch ........................................................1-34

Entrance Light Switch................................................................. 1-35

Travel Mode Switch .....................................................................1-36

Auto-Idle Switch ...........................................................................1-36

Buzzer Stop Switch ......................................................................1-37

Fast-Filling System .......................................................................1-38

Rear Console ..................................................................................1-39

Horn Switch....................................................................................1-40

Adjusting Seat ...............................................................................1-41

Seat Inclination Adjustment............................................... 1-41

Seat Fore-Aft Adjustment ....................................................1-41

Armrest Height Adjustment................................................ 1-41

Seat/Backrest Fore-Aft Adjustment..................................1-42

Seat Height Adjustment.......................................................1-42

Seat/Armrest/Backrest Fore-Aft Adjustment................1-42

Absorber Adjusting................................................................1-42

Backrest Adjustment .............................................................1-43

Lumbar Support Adjustment .............................................1-43

Headrest Adjustment ............................................................1-43

Installation and Adjustment of Mirror and Cameras

(Optional)...................................................................................1-44

Camera Monitor (Optional).......................................................1-45

Seat Belt...........................................................................................1-46

Cab Door Release Button ..........................................................1-47

Opening Cab Left Window........................................................1-47

BREAK-IN...........................................................................................2-1

Observe Machine Closely.............................................................2-1

Every 10 Hours or Each Shift .......................................................2-1

After the First 50 Hours .................................................................2-2

OPERATING ENGINE.....................................................................3-1

Inspect Machine Daily Before Starting....................................3-1

Before Turning Power ON.............................................................3-2

Turning Power ON...........................................................................3-3

Starting Engine ................................................................................3-8

Check Instruments After Starting...........................................3-10

Using Booster Batteries..............................................................3-11

Stopping Engine...........................................................................3-13

Emergency Engine Stop Switch..............................................3-14

Engine Stop Switches .................................................................3-15

DRIVING MACHINE .......................................................................4-1

Drive Machine Carefully................................................................4-1

Steering Machine Using Pedals..................................................4-2

Steering Machine Using Levers..................................................4-3

Travel Mode Switch ........................................................................4-4

Travel Alarm.......................................................................................4-5

Operating on Soft Ground...........................................................4-6

Raise One Track Using Boom and Arm ....................................4-6

Towing Machine a Short Distance.............................................4-7

Operating in Ground Condition.................................................4-8

Parking Machine on Slopes .........................................................4-9

Parking Machine..............................................................................4-9

OPERATING MACHINE.................................................................5-1

Control Lever (ISO Pattern Backhoe)........................................5-1

Control Lever (Hitachi Pattern Backhoe).................................5-2

Control Lever (ISO Pattern Loading Shovel) ..........................5-3

Control Lever (Hitachi Pattern Loading Shovel)...................5-4

Bucket Open-Close Pedals (Loading Shovel) ........................5-5

Pilot Control Shut-Off Lever ........................................................5-6

Engine Speed Control....................................................................5-7

Auto-Idle.............................................................................................5-8

Warming-Up Operation ................................................................5-9

Warming-Up Cylinders and Motors.......................................5-10

Operate Machine Safely.............................................................5-11

Operating Backhoe......................................................................5-12

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CONTENTS

Grading Operation....................................................................... 5-12

Avoid Abusive Operation ..........................................................5-13

Operating Tips...............................................................................5-14

Avoid Swinging Bucket to Move Objects ............................5-14

Operating Loading Shovel........................................................5-15

Prohibited Operation..................................................................5-15

Object Handling --- If Equipped..............................................5-18

Overnight Storage Instructions............................................... 5-19

TRANSPORTING.............................................................................6-1

Transporting......................................................................................6-1

MAINTENANCE...............................................................................7-1

Correct Maintenance and Inspection Procedures...............7-1

Check Hour Meter Regularly .......................................................7-2

Use Correct Fuels and Lubricants..............................................7-2

Prepare Machine for Maintenance............................................7-3

Open Access Doors for Service...................................................7-5

Inspection/Maintenance Lights.................................................7-6

Use a Chain to Prevent Falling Accidents ...............................7-7

Construction Outline .....................................................................7-8

Hydraulic System..........................................................................7-10

Periodic Replacement of Parts................................................. 7-13

Periodic Replacement of Rubber Hoses...............................7-14

Maintenance Interval Guide.....................................................7-18

A. Greasing......................................................................................7-22

Loading Shovel Front Joint Pins ........................................ 7-23

Backhoe Front Joint Pins......................................................7-26

Swing Bearing..........................................................................7-29

Swing Internal Gear................................................................7-30

Center Joint...............................................................................7-31

Operating Lubricator.............................................................7-32

B. Engine.......................................................................................... 7-34

Check Engine Oil Level..........................................................7-35

Change Engine Oil..................................................................7-36

Replace Engine Oil Filters.....................................................7-36

C. Transmission..............................................................................7-38

Pump Transmission ................................................................ 7-39

Swing Reduction Gear ..........................................................7-43

Travel Reduction Gear...........................................................7-45

D. Hydraulic System.....................................................................7-47

Inspection and Maintenance of Hydraulic

Equipment ...........................................................................7-48

Check Hydraulic Oil Level ....................................................7-50

Drain Hydraulic Oil Tank Sump ..........................................7-51

Replace Full-Flow Filter and Drain Filter Element .......7-52

Replace Bypass Filter Element............................................7-54

Replace Pilot Oil Filter Element..........................................7-56

Change Hydraulic Oil............................................................. 7-58

Replace Suction Filter............................................................7-58

Replace High-Pressure Filter Element .............................7-61

Replace Tank Air Breather Element...................................7-62

Clean Oil Cooler Core ............................................................7-63

Check Hoses and Lines .........................................................7-64

E. Fuel System ................................................................................7-70

Drain Fuel Tank Sump............................................................7-72

Drain Fuel Filter Sediment...................................................7-72

Replace Fuel Filter Element.................................................7-73

Replace Fuel Filter...................................................................7-74

Check Fuel Hoses ....................................................................7-75

Clean Fuel Cooler Core..........................................................7-77

Clean Fuel Tank Breather......................................................7-77

Drain Fuel Pre-Filter Sediment (Optional)......................7-78

Replace Fuel Pre-Filter Element (Optional)....................7-79

F. Air Cleaner...................................................................................7-80

Clean Air Cleaner Outer Element ......................................7-80

Replace Air Cleaner Outer and Inner Elements...........7-80

G. Cooling System........................................................................7-82

Check Coolant Level ..............................................................7-83

Check DCA4 Concentration in Coolant...........................7-84

Replace Coolant Filter ...........................................................7-92

Change Coolant.......................................................................7-93

Clean Radiator, After Cooler Interior................................ 7-93

Clean Radiator, After Cooler Core .....................................7-94

Check Fan Belt for Wear........................................................7-94

Check Radiator Stay for Looseness...................................7-94

H. Air Conditioner.........................................................................7-95

Recirculation Air Filter...........................................................7-95

Ventilation Air Filter ...............................................................7-96

Check Refrigerant Quantity.................................................7-97

Check Compressor Belt Tension ........................................7-98

Clean Condenser Core ..........................................................7-99

Check Tightening Torque...................................................7-100

Seasonal Maintenance........................................................7-101

I. Electrical System......................................................................7-102

Batteries ...................................................................................7-103

Replacing Fuses.....................................................................7-108

Check Power Source Terminal..........................................7-111

Check High Current Fuse....................................................7-112

Check Electrical Cables and Wire Harnesses for

Short Circuits.....................................................................7-113

Check Emergency Engine Stop Switch.........................7-115

J. Miscellaneous ..........................................................................7-116

Check Bucket Teeth..............................................................7-117

Inspect Emergency Escape Device and Hanger ........7-123

Auto-Lubrication System ...................................................7-124

Check and Replace Seat Belt.............................................7-128

Check Windshield Washer Fluid Level...........................7-128

Clean Air Horn Compressor Filter....................................7-129

Check and Adjust Track Sag ..............................................7-130

Check Accumulator and Track Adjuster Cylinder

Circuit...................................................................................7-132

Clean Side Frame Area........................................................7-132

Check Tightening Torque of Bolts and Nuts................7-133

MAINTENANCE UNDER SPECIAL ENVIRONMENTAL

CONDITIONS....................................................................................9-1

Maintenance Under Special Environmental Conditions...9-1

STORAGE........................................................................................ 10-1

Storing Machine............................................................................10-1

Removing Machine from Storage ..........................................10-2

TRANSPORTING MACHINE ........................................................10-2

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CONTENTS

TROUBLESHOOTING.................................................................11-1

Cummins Fault Code Lamps and Diagnostic

Switches .....................................................................................11-1

Mode Selection...........................................................................11-11

SPECIFICATIONS .........................................................................12-1

Specifications.................................................................................12-1

Working Range (Loading Shovel)...........................................12-2

Working Range (Backhoe).........................................................12-3

Sound Level Results.....................................................................12-4

Electric Fans....................................................................................12-4

INDEX...............................................................................................14-1

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The manufacturing Nos. explained in this group is the

individual number (serial No.) given to each machine and main

components. These numbers are requested when inquiring

any information on the machine and/or components. Fill these

serial Nos. in the blank spaces in this group to immediately

make them available upon request.

Machine Type and Serial Number

TYPE:

PRODUCT

IDENTIFICATION

NUMBER: M18K-07-009

Product Identification Number

PRODUCT

IDENTIFICATION

NUMBER:

fNOTE:

*HCM18K00P00001001*

Marks to indicate the start

and end of the PIN

PRODUCT IDENTIFICATION

NUMBER (PIN)

M18K-07-009

M117-07-092

MACHINE NUMBERS

M144-12-002

Engine Type and Serial Number

TYPE:

MFG. NO.:

Travel Motor Type and Serial Number

TYPE:

MFG. NO.:

(LEFT)

(RIGHT)

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MACHINE NUMBERS

M18K-07-014

M117-12-001

M117-12-003

Hydraulic Pump Type and Serial Number

TYPE:

MFG. NO.:

M18C-01-004

Swing Motor Type and Serial Number

TYPE:

MFG. NO.:

Front Type and Serial Number (Loading Shovel)

TYPE:

MFG. NO.:

Bucket Type and Serial Number (Loading Shovel)

TYPE:

MFG. NO.:

(FRONT)

(REAR)

(1, 2)

(3, 4)

(5, 6)

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MACHINE NUMBERS

M117-12-001

M18C-01-005

M146-01-020

T18C-01-02-005

Control Valve Type and Serial Number

TYPE:

MFG. NO. (LEFT):

MFG. NO. (MIDDLE):

MFG. NO. (RIGHT):

Front Type and Serial Number

(Backhoe Boom)

TYPE:

MFG. NO.:

Front Type and Serial Number

(Backhoe Arm)

TYPE:

MFG. NO.:

Bucket Type and Serial Number

(Backhoe)

TYPE:

MFG. NO.:

Right Middle Left

MACHINE NUMBERS

MEMO

..................................................................................................................................................................................................

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.

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 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.

fNOTE indicates an additional explanation for an

element of information.

S-1

SAFETY

SA-2644

SA-1223

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 authorized 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 machine life.

• Do not modify any machine parts without authorization.

Failure to do so may deteriorate the part safety, function,

and/or service life. In addition, personal accident,

machine trouble, and/or damage to material caused by

unauthorized modifications will void Hitachi Warranty

Policy.

• Do not use attachments and/or optional parts or

equipment not authorized by Hitachi. Failure to do so

may deteriorate the safety, function, and/or service life

of the machine. In addition, personal accident, machine

trouble, and/or damage to material caused by using

unauthorized attachments and/or optional parts or

equipment will void Hitachi Warranty Policy.

•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 authorized dealer before operating or performing

maintenance work on the machine.

SAFETY

S-2

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 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, ambulance

service, hospital, and fire department posted near your

telephone.

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.

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.

SAFETY

S-3

SA-437

SA-438

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“MAINTENANCE”chapter in the

operator’s manual.

General Precautions for CAB

•Before entering the cab, thoroughly remove all dirt and/or

oil such as mud, grease, soil or stones that may mess up the

cab from the soles of your work boots. If any controls such

as a pedal is operated while with dirt and/or oil on the soles

of the operator’s work boots, the operator’s foot may slip off

the pedal, possibly resulting in a personal accident.

• Do not mess up around the operator’s seat with parts,

tools, soil, stones, obstacles that may fold up or turn

over, cans or lunch box. The levers or pedals become

inoperable if obstacle jams in operation stroke of the

travel levers/pedals, pilot control shut-off lever or control

levers/pedals, which may result in serious injury or death.

• Do not leave parts and/or tools lying around the

operator’s seat. Store them in their specified locations.

• Avoid storing transparent bottles in the cab. Do not

attach any transparent type window decorations on

the windowpanes as they may focus sunlight, possibly

starting a fire.

• Refrain from listening to the radio, or using music

headphones or mobile telephones in the cab while

operating the machine.

• Keep all flammable materials and/or explosives away

from the machine.

• After using the ashtray, always cover it to extinguish the

match and/or tobacco.

• Do not leave cigarette lighters in the cab. When the

temperature in the cab increases, the lighter may

explode.

• Use proper floor mat dedicated to the machine. If another

floor mat is used, it may be displaced and contact with

the travel pedals or loader bucket open-close pedals

during operation, resulting in serious injury or death.

SAFETY

S-4

SA-435

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 and 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.

• Be careful of slippery conditions on platforms, steps, and

handrails when leaving the machine.

• Never get on and off the machine with tools in your

hands.

Adjust Operator’s Seat

•A poorly adjusted seat for either the operator or the

work at hand may quickly fatigue the operator leading to

misoperations.

• The seat should be adjusted whenever changing the

operator for the machine.

• The operator should be able to fully depress the pedals

and to correctly operate the control levers with his back

against the seat back.

• If not, move the seat forward or backward, and check

again.

• Adjust the rear view mirror position so that the best rear

visibility is obtained from the operator’s seat. If the mirror

is broken, immediately replace it with a new one.

Ensure Safety Before Rising from or Leaving

Operator’s Seat

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

side 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 control levers/pedals, 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. Press and

hold the engine stop switch until stopping the engine

completely. Remove the key from the key switch.

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

access covers and lock them up.

SAFETY

S-5

SA-439

SA-378

Fasten Your Seat Belt

•If the machine should overturn, the operator may become

injured and/or thrown from the cab. Additionally the

operator may be crushed by the overturning machine,

resulting in serious injury or death.

• 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.

• Be sure to remain seated with the seat belt securely

fastened at all times when the machine is in operation to

minimize the chance of injury from an accident.

• We recommend that the seat belt is replaced every three

years regardless of its apparent condition.

• Seat belt is also provided on the trainer’s seat. Be sure the

rider on the trainer’s seat properly fastens seat belt before

operating the machine.

Move and Operate Machine Safely

•Bystanders can be run over.

• 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). It warns people when the

machine starts to move.

• Use a signal person when moving, swinging, or operating

the machine in congested areas. Coordinate hand signals

before starting the machine.

• Use appropriate illumination. Check that all lights are

operable before operating the machine. If any faulty

illumination is present, immediately repair it.

• Ensure the cab door, windows, doors and covers are

securely locked.

• Check the mirror and the monitors in the CAB for

problems. If there are, replace the problem parts or clean

the mirror, cameras and monitors.

Refer to Camera Monitor section on the cleaning of the

camera and monitor.

Handle Starting Aids Safely

Starting fluid:

•Starting fluid is highly flammable.

• Keep all sparks and flame away when using it.

• Keep starting fluid well away from batteries and cables.

• Remove container from machine if engine does not need

starting fluid.

• To prevent accidental discharge when storing a

pressurized container, keep the cap on the container, and

store it in a cool, well-protected location.

• Do not incinerate or puncture a starting fluid container.

SAFETY

S-6

SA-237

SA-426

SA-293

Operate Only from Operator’s Seat

•Inappropriate engine starting procedures may cause the

machine to runaway, possibly resulting in serious injury or

death.

• Start the engine only from the operator’s seat.

• Do not start engine by shorting across starter terminals.

• Before starting the engine, confirm that all control levers

are in neutral.

• Before starting the engine, confirm the safety around the

machine and sound the horn to alert bystanders.

Jump Starting

•Battery gas can explode, resulting in serious injury.

• If the engine must be jump started, be sure to follow the

instructions shown in the “OPERATING ENGINE” chapter in

the operator’s manual.

• The operator must be in the operator’s seat so that the

machine will be under control when the engine starts.

Jump starting is a two-person operation.

• Never use a frozen battery.

• Failure to follow correct jump starting procedures could

result in a battery explosion or a runaway machine.

Precautions for Operations

•Investigate the worksite before starting operations.

• Be sure to install an overhead cab guard when operating

in a worksite which has a possibility of falling objects.

• If operation on soft ground is required, sufficiently

reinforce the ground beforehand.

• Be sure to wear close fitting clothing and safety

equipment appropriate for the job, such as a hard hat,

etc. when operating the machine.

• Clear all persons and obstacles from area of operation and

machine movement.

Do not permit persons other than the operator to enter

areas where there is danger such as flying objects.

Always beware of the surroundings while operating.

When working in a small area surrounded by obstacles,

take care not to hit the upperstructure against obstacles.

• When loading onto trucks, bring the bucket over the truck

beds from the rear side. Take care not to swing the bucket

over the cab or over any person.

SAFETY

S-7

SA-444

SA-032

M117-05-006

Investigate Job Site Beforehand

•When working at the edge of an excavation or on a road

shoulder, the machine could tip over, possibly resulting in

serious injury or death.

• Investigate the configuration and ground conditions of

the job site beforehand to prevent the machine from

falling and to prevent the ground, stockpiles, or banks

from collapsing.

• Make a work plan. Use machines appropriate to the work

and job site.

• Reinforce ground, edges, and road shoulders as

necessary. Keep the machine well back from the edges of

excavations and road shoulders.

• When working on an incline or on a road shoulder,

employ a signal person as required.

• When the footing is weak, reinforce the ground before

starting work.

• When working on frozen ground, be extremely alert. As

ambient temperatures rise, footing becomes loose and

slippery.

• Beware the possibility of fire when operating the machine

near flammable materials such as dry grass.

•Make sure the worksite has sufficient strength to firmly

support the machine.

When working close to an excavation or at road

shoulders, operate the machine with the tracks positioned

perpendicular to the cliff face with travel motors at the rear,

so that the machine can more easily evacuate if the cliff face

collapses.

•If working on the bottom of a cliff or a high bank is required,

be sure to investigate the area first and confirm that no

danger of the cliff or bank collapsing exists. If any possibility

of cliff or bank collapsing exists, do not work on the area.

•Soft ground may collapse when operating the machine on

it, possibly causing the machine to tip over. When working

on a soft ground is required, be sure to reinforce the ground

first using large pieces of steel plates strong and firm

enough to easily support the machine.

•Note that there is always a possibility of machine tipping

over when working on rough terrain or on slopes. Prevent

machine tipping over from occurring. When operating on

rough terrain or on slopes:

• Reduce the engine speed.

• Select slow travel speed mode.

• Operate the machine slowly and be cautious with

machine movements.

SAFETY

S-8

SA-380

Hitachi EX1900-6 User manual

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