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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

×

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 

Summary of Contents for ZAXIS 850-3

Page 1: ...ual URL http www hitachi c m com Hydraulic Excavator 850 3 850LC 3 870H 3 870LCH 3 Service Manual consists of the following separate Part No Technical Manual Operational Principle Vol No TO1JB E Technical Manual Troubleshooting Vol No TT1JB E Workshop Manual Vol No W1JB E WIJB E 00 2006 2 20 12 09 Page 1 Adobe PageMaker 7 0J PPC ...

Page 2: ......

Page 3: ...aterial 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 Trouble...

Page 4: ...T 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...

Page 5: ...RNING 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 desig nated signal...

Page 6: ...ion Failure to do so may deteriorate the part safety function and or service life In addi tion 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...

Page 7: ...rs 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 equipm...

Page 8: ...arplugs to protect against objec tionable 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 per sonal injury In the walk around inspection be sure to cover all points described in the RE START INSPEC TION chapter in the operator s manual 007 E01A 0435 SA 435 ...

Page 9: ...tore them in their specified loca tions Avoid storing transparent bottles in the cab Do not attach any transparent type window decora tions 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 objects and or explosives away from the machine ...

Page 10: ... 0439 SA 439 ADJUST THE OPERATOR S SEAT A poorly adjusted seat for either the operator or for the work at hand may quickly fatigue the operator leading to mis operations 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 sea...

Page 11: ...e LOCK posi tion Turn the key switch OFF to stop the engine Before leaving the machine close all windows doors and access covers and lock them up FASTEN YOUR SEAT BELT If the machine should overturn the operator may become injured and or thrown from the cab Addi tionally the operator may be crushed by the over turning machine resulting in serious injury or death Prior to operating the machine thor...

Page 12: ...ne Use appropriate illumination Check that all lights are operable before operating the machine If any faulty illumination is present immediately repair it 011 E01A 0398 SA 426 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...

Page 13: ... starting the engine confirm the safety around the machine and sound the horn to alert bystanders 012 E01B 0431 SA 444 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 THE ENGINE chapter in the operator s manual The operator must be in the operator s seat so that the machine will be under ...

Page 14: ...the work site before starting operations 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 op eration and machine movement Always beware of the surroundings while operat ing When working in a small area surrounded by obstacles take care not to hit the upperstructure agai...

Page 15: ... machine near flammable objects 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 po sitioned 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 cl...

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