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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/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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Summary of Contents for Zaxis 330

Page 1: ...N 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 30 1 ...

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Page 3: ...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 ...

Page 4: ...afety 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 situati...

Page 5: ...ference purposees Quantity To Convert From Into Multiply By MPa kgf cm2 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 m3 yd3 1 308 Weight kg lb 2 205 N kgf 0 1...

Page 6: ...INTRODUCTION IN 04 Blank Find manuals at https best manuals com ...

Page 7: ...ch 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 occasio...

Page 8: ...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 message...

Page 9: ...ce 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 fo...

Page 10: ...gainst 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 Find manuals at https best manuals com ...

Page 11: ...Store them in their specified lo cations Avoid storing transparent bottles in the cab Don t 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 objects and or explosives away from the machine A...

Page 12: ...pery conditions on platforms steps and handrails when mounting and dis mounting the machine 008 E01B 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 misoperations The seat should be adjusted whenever changing the operator for the machine The operator should be able to fully depress the pedals ...

Page 13: ...t all times when the machine is in operation to minimize the chance of injury from an accident We recommend that the seat belt be replaced every three years regardless of its apparent condition 010 E01A 0237 SA 237 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 ...

Page 14: ...nfirm that all control levers are in neutral 012 E01B 0444 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 control when the engine starts Jump starting is a two...

Page 15: ...g multiple numbers of machines provide signals commonly known by all personnel involved Also appoint a signal person to coordi nate the job site Make sure that all personnel obey the signal person s directions 018 E01A 0481 SA 481 CONFIRM DIRECTION OF MACHINE TO BE DRIVEN Incorrect travel pedal lever operation may result in serious injury death Before driving the machine confirm the position of th...

Page 16: ...pe may cause the machine to slip or overturn possibly resulting in serious injury or death When driving up or down a slope keep the bucket facing the direction of travel approxi mately 200 to 300 mm A above the ground If the machine starts to skid or becomes unstable immediately lower the bucket to the ground and stop traveling Driving across the face of a slope or steering on a slope may cause th...

Page 17: ...n the auto idle acceleration seleclter and the H P mode switch off Run the engine at slow idle speed without load for 5 minutes to cool down the engine Stop the engine and remove the key from the key switch Pull the pilot control shut off lever to LOCK position Block both tracks and lower the bucket to the ground Thrust the bucket teeth into the ground if you must park on a grade Position the mach...

Page 18: ...NDERS BEFORE MOVING MACHINE USE A SIGNAL PERSON WHEN BACKING UP IF YOUR VIEW IS OBSTRUCTED ALWAYS KEEP THE SIGNAL PERSON IN VIEW Use hand signals which conform to your local regulations when work conditions require a signal person No machine motions shall be made unless signals are clearly understood by both signalman and operator Learn the meanings of all flags signs and markings used on the job ...

Page 19: ...ul before operating on a grade Prepare machine operating area flat Keep the bucket low to the ground and close to the machine Reduce operating speeds to avoid tipping or slipping Avoid changing direction when traveling on grades NEVER attempt to travel across a grade steeper than 15 degrees if crossing the grade is unavoidable Reduce swing speed as necessary when swinging loads Be careful when wor...

Page 20: ...ted load should fall any person nearby may be struck by the falling load or may be crushed underneath it resulting in serious injury or death When using the machine for craning operations be sure to comply with all local regulations Do not use damaged chains or frayed cables sables slings or ropes Before craning position the upperstructure with the travel motors at the rear Move the load slowly an...

Page 21: ... object 031 E01A 0432 SA 432 PARK MACHINE SAFELY To avoid accidents Park machine on a firm level surface Lower bucket to the ground Turn auto idle acceleration selector and H P mode switch off Run engine at slow idle speed without load for 5 minutes Turn key switch to OFF to stop engine Remove the key from the key switch Pull the pilot control shut off lever to the LOCK position Close windows roof...

Page 22: ...le smoking or when near open flame or sparks Always stop the engine before refueling the machine Fill the fuel tank outdoors All fuels most lubricants and some coolants are flammable Store flammable fluids well away from fire hazards Do not incinerate or puncture pressurized containers Do not store oily rags they can ignite and burn spontaneously Securely tighten the fuel and oil filler cap 034 E0...

Page 23: ...operation of a control lever 5 Always select the slow speed mode with the travel mode switches In the high speed mode travel speed may automatically increase 6 Avoid steering while driving up or down the ramp as it is extremely dangerous If steering is unavoidable first move back to the ground or flatbed modify traveling direction and begin to drive again 7 Do not operate any levers besides the tr...

Page 24: ...ing the machine 1 Park the machine on a level surface 2 Lower the bucket to the ground 3 Turn the auto idle acceleration selecltor off 4 Run the engine at slow idle speed without load for 5 minutes 5 Turn the key switch to OFF to stop engine 6 Relieve the pressure in the hydraulic system by moving the control levers several times 7 Remove the key from the switch 8 Attach a Do Not Operate tag on th...

Page 25: ...ase oil or debris When cleaning parts always use nonflammable detergent oil Never use highly frammable oil such as fuel oil and gasoline to clean parts or surfaces Disconnect battery ground cable before making adjustments to electrical systems or before welding on the machine Illuminate your work area adequately but safely Use a portable safety light for working inside or under the machine Make su...

Page 26: ...e ground before you work on the machine If you must work on a lifted machine or attachment securely support the machine or attachment Do not support the machine on cinder blocks hollow tires or props that may crumble under continuous load Do not work under a machine that is supported solely by a jack 519 E01A 0527 SA 527 STAY CLEAR OF MOVING PARTS Entanglement in moving parts can cause serious inj...

Page 27: ...L to cool then gradually loosen AIR RELEASE PLUG to release pressure 503 E01B 0344 SA 344 STORE ATTACHMENTS SAFELY Stored attachments such as buckets hydraulic hammers and blades can fall and cause serious injury or death Securely store attachments and implements to prevent falling Keep children and bystanders away from storage areas 504 E01A 0034 SA 034 USE TOOLS PROPERLY Use tools appropriate fo...

Page 28: ...o become hot during operation The engine hoses lines and other parts become hot as well Wait for the oil and components to cool before starting any maintenance or inspection work 505 E01B 0498 SA 039 SA 225 REPLACE RUBBER HOSES PERIODICALLY Rubber hoses that contain flammable fluids under pressure may break due to aging fatigue and abrasion It is very difficult to gauge the extent of deterioration...

Page 29: ...ulic or other lines Tighten all connections before applying pressure Search for leaks with a piece of cardboard take care to protect hands and body from high pressure fluids Wear a face shield or goggles for eye protection If an accident occurs see a doctor familiar with this type of injury immediately Any fluid injected into the skin must be surgically removed within a few hours or gangrene may r...

Page 30: ... lines Never install bent or damaged lines pipes or hoses Check for Shorts Short circuits can cause fires Clean and tighten all electrical connections Check before starting work for loose kinked hardened or frayed electrical cables and wires Check before starting work for missing or damaged terminal caps DO NOT OPERATE MACHINE if cable or wires are loose kinked etc Clean up Flammables Spilled fuel...

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