Page 1 PART NO. ENMDD5-NA1-1 Operator's Manual 345USLC Hydraulic Excavator URL:http://www.hitachi-c-m.com Serial No. 010001 and up This book is printed on recycled paper. PRINTED IN JAPAN (E) 2017, 12...
Page 2 INTRODUCTION Read this manual carefully to learn how to operate and Warranty is provided as a part of Hitachi’s support service your machine correctly. Failure to do so could program for customers who operate and maintain their result in personal injury or machine damage.
Page 3 MACHINE NUMBERS INDEX SAFETY VISIBILITY MAP SAFETY SIGNS NAME OF COMPONENTS GETTING ON AND OFF THE MACHINE OPERATOR’S STATION BREAK-IN OPERATING THE ENGINE DRIVING THE MACHINE OPERATING THE MACHINE TRANSPORTING MAINTENANCE MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS STORAGE TROUBLESHOOTING SPECIFICATIONS OPTIONAL ATTACHMENTS AND DEVICES INDEX ENMDD5-NA1-1...
Page 5: Table Of Contents
CONTENTS MACHINE NUMBERS ............1 Avoid Applying Heat to Lines Containing Flammable Fluids ..............S-34 SAFETY ................S-1 Precautions for Handling Accumulator and Recognize Safety Information ............S-1 Gas Damper ................S-34 Understand Signal Words .............S-1 Remove Paint Before Welding or Heating ......S-35 Follow Safety Instructions ............S-2 Beware of Asbestos and Silica Dust and Other Prepare for Emergencies ...............S-3...
Page 6 CONTENTS Air Conditioner ON/OFF ............1-33 Travel Alarm Deactivation Switch (Optional) ....1-99 Radio ....................1-34 Rear Light Switch (Optional) ..........1-99 Work Mode ..................1-35 Seat Heater Switch (Optional) ..........1-99 Attachment Selection ............1-35 Electrical Control Main Switch (Optional) ....1-100 Setting Menu .................
Page 7 CONTENTS Mirror Installation Diagram ..........1-135 Unloading ..................6-5 Seat Belt ..................1-138 Lifting Machine ................6-7 Battery Disconnect Switch ............1-139 MAINTENANCE .............. 7-1 Switch Operation ..............1-140 Correct Maintenance and Inspection Procedures ....7-1 BREAK-IN ............... 2-1 Layout ....................7-3 Observe Engine Operation Closely ...........2-1 Check the Hour Meter Regularly ..........7-4 Every 8 Hours or Daily ..............2-1 Maintenance Guide Table ............7-5 After the First 50 Hours ..............2-1...
Page 8 CONTENTS H. Electrical System ..............7-73 ZX345USLC-6N ................. 12-4 Battery ..................7-74 OPTIONAL ATTACHMENTS AND DEVICES ....13-1 Replace Battery ................ 7-77 Control Lever (H Type) (Optional) ........... 13-1 Check Electrolyte Specific Gravity ........7-78 CONTROL LEVER (2 Way Multi Valve) (Optional) ....13-2 Replacing Fuses ...............
Page 9: Machine Numbers
MACHINE NUMBERS 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.
Page 10 MACHINE NUMBERS SCR (Selective Catalytic Reduction) Catalyst TYPE MFG. NO. MDC1-01-510...
Page 11 MACHINE NUMBERS DOC (Diesel Oxidation Catalyst) TYPE MFG. NO. TYPE MFG. NO. MDC1-01-510...
Page 12 MACHINE NUMBERS Travel Motor TYPE MFG. NO. M178-07-047 Swing Motor TYPE MFG. NO. M178-07-086...
Page 13 MACHINE NUMBERS Hydraulic Pump TYPE MFG. NO. MDD5-00-002...
Page 14 MACHINE NUMBERS MEMO ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 15: Safety
SAFETY 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. SA-2644 Understand Signal Words ...
Page 16: Follow Safety Instructions
 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...
Page 17: Prepare For Emergencies
SAFETY Prepare for Emergencies  Be prepared for a fire or an accident.  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. ...
Page 18: Protect Against Noise
SAFETY 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. SA-434 Inspect Machine ...
Page 19: General Precautions For The Cab
SAFETY General Precautions for the Cab  Before entering the cab, thoroughly remove all dirt and/or oil such as mud, grease, soil or stones 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.
Page 20: Use Handholds And Steps
SAFETY 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 hand-holds. ...
Page 21: Ensure Safety Before Rising From Or Leaving Operator's Seat
SAFETY 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.
Page 22: Move And Operate Machine Safely
SAFETY 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).
Page 23: Jump Starting
SAFETY 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.
Page 24: Precautions For Operations
SAFETY Precautions for Operations  Investigate 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.  Keep bystanders and obstacles clear of the area of machine operation.
Page 25: Investigate Job Site Beforehand
SAFETY 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.
Page 26: Install Opg Guard
Install OPG Guard In case the machine is operated in areas where the possibilities of falling stones or debris exist, equip Hitachi OPG guard. Consult your authorized dealer for installing the OPG guard. In order not to impair operator protective structure: Replace damaged OPG guard.
Page 27: Provide Signals For Jobs Involving Multiple Machines
SAFETY Provide Signals for Jobs Involving Multiple Machines  For jobs involving multiple machines, provide signals commonly known by all personnel involved. Also, appoint a signal person to coordinate the job site. Make sure that all personnel obey the signal person’s directions. SA-481 Confirm Direction of Machine to Be Driven ...
Page 28: Drive Machine Safely
SAFETY Drive Machine Safely  Before driving the machine, always confirm that the travel levers/pedals direction corresponds to the direction you wish to drive.  Be sure to detour around any obstructions.  Avoid traveling over obstructions. Soil, fragments of rocks, and/or metal pieces may scatter around the machine.
Page 29 SAFETY  Avoid swinging the upperstructure on slopes. Never attempt to swing the upperstructure downhill. The machine may tip over. If swinging uphill is unavoidable, carefully operate the upperstructure and boom at slow speed.  If the engine stalls on a slope, immediately lower the bucket to the ground.
Page 30: Avoid Injury From Rollaway Accidents
SAFETY Avoid Injury from Rollaway Accidents  Death or serious injury may result if you attempt to mount or stop a moving machine. To avoid rollaways:  Select level ground when possible to park the machine.  Do not park the machine on a gradient. ...
Page 31: Avoid Injury From Back-Over And Swing Accidents
SAFETY Avoid Injury from Back-Over and Swing Accidents  If any person is present near the machine when backing or swinging the upperstructure, the machine may hit or run over that person, resulting in serious injury or death. To avoid back-over and swing accidents: ...
Page 32: Keep People Clear From Working Area
SAFETY Keep People Clear from Working Area  People around the operating machine may be hit severely by the swinging front attachment or counterweight, be caught in other objects, and/or be struck by flying objects, resulting in serious injury or death. ...
Page 33: Avoid Undercutting
SAFETY Avoid Undercutting  In order to retreat from the edge of an excavation if the footing should collapse, always position the undercarriage perpendicular to the edge of the excavation with the travel motors at the rear.  If the footing starts to collapse and if retreat is not possible, do not panic.
Page 34: Never Undercut A High Bank
SAFETY Never Undercut a High Bank  The edges could collapse or a land slide could occur causing serious injury or death. SA-489 Dig with Caution  Accidental severing of underground cables or gas lines may cause an explosion and/or fire, possibly resulting in serious injury or death.
Page 35: Avoid Power Lines
SAFETY Avoid Power Lines  Serious injury or death can result if the machine or front attachments are not kept a safe distance from electric lines.  When operating near an electric line, never move any part of the machine or load to within 3 m plus twice the line insulator length of overhead wires.
Page 36: Object Handling
SAFETY Object Handling  If a lifted 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.
Page 37: Park Machine Safely
SAFETY Park Machine Safely To avoid accidents:  Park machine on a firm, level surface.  Lower the bucket and blade to the ground.  Turn auto-idle switch OFF.  Run engine at slow idle speed without load for 5 minutes. ...
Page 38: Transport Safely
SAFETY Transport Safely  Take care the machine may turn over when loading or unloading the machine onto or off of a truck or trailer.  Observe the related regulations and rules for safe transportation.  Select an appropriate truck or trailer for the machine to be transported.
Page 39: Practice Safe Maintenance
SAFETY Practice Safe Maintenance To avoid accidents:  Understand service procedures before starting work.  Keep the work area clean and dry.  Do not spray water or steam inside cab.  Never lubricate or service the machine while it is moving. ...
Page 40: Warn Others Of Service Work
SAFETY  Sufficiently illuminate the work site. Use a maintenance work light when working under or inside the machine.  Always use a work light protected with a guard. If the light bulb is broken, spilled fuel, oil, antifreeze fluid, or window washer fluid may catch fire.
Page 41: Stay Clear Of Moving Parts
SAFETY Stay Clear of Moving Parts  Entanglement in moving parts can cause serious injury.  To prevent accidents, care should be taken to ensure that hands, feet, clothing, jewelry and hair do not become entangled when working around rotating parts. SA-026 SA-2294 Prevent Parts from Flying...
Page 42: Avoid Injury From Attachment Falling Accident
SAFETY Avoid Injury from Attachment Falling Accident  Stored attachments such as buckets, hydraulic hammers, and blades can fall and cause serious injury or death.  To avoid possible personal injury from attachment falling accident, use a platform when replacing an attachment. ...
Page 43: Replace Rubber Hoses Periodically
SAFETY 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 due to aging, fatigue, and abrasion of rubber hoses by inspection alone. ...
Page 44: Prevent Fires
SAFETY Prevent Fires Check for Oil Leaks:  Fuel, hydraulic oil and lubricant leaks can lead to fires.  Check for oil leaks due to missing or loose clamps, kinked hoses, lines or hoses that rub against each other, damage to the oil cooler, and loose oil cooler flange bolts.
Page 45 SAFETY Clean up Flammable Materials:  Spilled fuel and oil, trash, grease, debris, accumulated coal dust, and other flammable materials may cause fires.  Prevent fires by inspecting and cleaning the machine daily, and by removing adhered oil or accumulated flammable materials immediately.
Page 46: Evacuating In Case Of Fire
SAFETY Evacuating in Case of Fire  If a fire breaks out, evacuate the machine in the following way:  Stop the engine by turning the key switch to the OFF position if there is time.  Use a fire extinguisher if there is time. ...
Page 47: Precautions For Welding And Grinding
SAFETY Precautions for Welding and Grinding  Welding may generate gas and/or small fires.  Be sure to perform welding in a well ventilated and prepared area. Store flammable materials in a safe place before starting welding.  Only qualified personnel should perform welding. Never allow an unqualified person to perform welding.
Page 48: Avoid Heating Near Pressurized Fluid Lines
SAFETY Avoid Heating Near Pressurized Fluid Lines  Flammable spray can be generated by heating near pressurized fluid lines, resulting in severe burns to yourself and bystanders.  Do not heat by welding, soldering, or using a torch near pressurized fluid lines or other flammable materials. ...
Page 49: Remove Paint Before Welding Or Heating
 Keep bystanders out of the work site during operation.  Asbestos fibers might be present in imitation parts. Use only genuine Hitachi Parts. S-35...
Page 50: Prevent Battery Explosions
SAFETY Prevent Battery Explosions  Battery gas can explode.  Keep sparks, lighted matches, and flame away from the top of battery.  Never check battery charge by placing a metal object across the posts. Use a voltmeter or hydrometer. ...
Page 51: Handle Chemical Products Safely
 Improperly disposing of waste can threaten the environment and ecology. Potentially harmful waste used with Hitachi equipment includes such items as oil, fuel, coolant, DEF/AdBlue®, brake fluid, filters, and batteries.  Use leakproof containers when draining fluids. Do not use food or beverage containers that may mislead someone into drinking from them.
Page 52: Never Ride Attachment
SAFETY Never Ride Attachment Never allow anyone to ride on attachments or the load. This is an extremely dangerous practice. Notes on Aftertreatment Device About Aftertreatment Device The aftertreatment device removes particulate matter (PM) and NOx (Nitrogen Oxide) from the exhaust gas. Follow the instructions below to prevent the aftertreatment device from being damaged.
Page 53: Precautions For Communication Terminal
SAFETY Precautions for Communication Terminal Equipment This machine has a communication terminal equipment emitting electrical waves installed inside the rear tray situated at the back of the operator's seat. There is a possibility that a medical device, including an implantable device such as a cardiac pacemaker, could be affected and malfunction due the electrical waves emitted from the communication terminal equipment.
Page 54 SAFETY  Do not attempt to disassemble, repair, modification and displacement of the communication terminal, antenna and cables. Failure to do so may cause damage or fire on the machine and the communication terminal. (Before removing or installing the communication terminal, consult your authorized dealer.) ...
Page 55: Notes On Protection Of Operator's Station When The Machine Rolls Over
SAFETY Notes on Protection of Operator’s Station when the Machine Rolls Over The cab corresponds to the structure to protect the operator by absorbing impact energy when the machine rolls over (Roll- Over Protective Structure (ROPS)). However, when modifying the machine or installing a special attachment causing the machine mass to exceed the maximum operating mass described in the ROPS certification, the cab cannot fulfill its protective function, possibly causing...
Page 56: Visibility Map
VISIBILITY MAP Visibility Map Personal Hazard This machine complies with the essential health and safety requirements for visibility set out by Machinery Directive 2006/42/EC. The map shows the residual maskings (blind spots) observed by a seated operator (wearing the recommended seat restraint) in the cab using direct vision and the standard visual aids supplied with the machine. Additionally, operators are encouraged to adjust the mirrors provided to the machine to show the area as shown below.
Page 57: Safety Signs
Use the part No. indicated under the right corner of each safety sign illustration when placing an order of it to the Hitachi dealer. SS-4029 S-43...
Page 58 SAFETY SIGNS WARNING! Prior to operation, maintenance, disassembling, and transportation of the machine, be sure to read and understand the Operator’s Manual. SS4420332-2 Sign indicates an electrocution hazard if machine is brought too near electric power lines. Keep a safe distance from electric power lines. SS-862 Sign indicates a hazard from falling window.
Page 59 SAFETY SIGNS When moving the seat height/tilt lever downward, press the lever grip with a palm from the top side. Do not grasp the lever grip to operate the lever, possibly resulting in pinch of your fingers into the seat stand. SS4371371-3 If the machine should overturn, the operator may become injured and/or throw from the cab and/or crushed by the...
Page 60 SAFETY SIGNS Sign indicates a hazard of a flying plug from track adjuster that could cause injury. Read manual before adjusting track for safe and proper handling. SS-408 Sign indicates a burn hazard from spurting hot water or oil if radiator or hydraulic oil tank is uncapped while hot.
Page 61 SAFETY SIGNS Sign indicates a crush hazard by rotation of upper structure of the machine. Keep away from swinging area of machine. SS-024 Sign indicates a burn hazard from spurting hot water or oil if radiator or hydraulic oil tank is uncapped while hot. Allow radiator or hydraulic oil tank to cool before removing cap.
Page 62 SAFETY SIGNS Sign indicates a hazard of rotating parts, such as belt. Turn off before inspection and maintenance. SS3092352 Sign indicates a hazard of rotating parts, such as fan. Turn off before inspection and maintenance. SSYA00008687 Sign indicates an explosion hazard. Keep fire and open flames away from this area.
Page 63 SAFETY SIGNS Use the handle only to open or close the front window. Do not use the handle to enter or leave the cab. If the window is not locked, it may move possibly causing you to lose your balance and fall. SS4467093-2 WARNING IT CONTAINS NITROGEN UNDER HIGH PRESSURE.
Page 64 SAFETY SIGNS MEMO ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................S-50...
Page 65: Name Of Components
NAME OF COMPONENTS Name of Components 1- Bucket 2- Bucket Cylinder 3- Arm 4- Arm Cylinder 5- Boom Cylinder 6- Boom 7- Fuel Tank 8- Hydraulic Oil Tank 9- Aftertreatment Device 10- Engine 11- Expansion Tank 12- Counterweight 13- Battery Disconnect Switch 14- DEF/AdBlue®...
Page 66: Getting On And Off The Machine
GETTING ON AND OFF THE MACHINE Getting ON and OFF the Machine Footholds (1) and handrails (2) are provided around the machine for safe entry and exit to the cab. They also allow for safe inspection and maintenance. Never jump on or off the machine, it is very dangerous. WARNING: ...
Page 67: Operator's Station
Standardization (ISO). If improper liquid (diesel oil, kerosene or gasoline) is refilled in the DEF/AdBlue® tank, fire or system failure may result.  Use only genuine Hitachi engine oil. Using engine oil other than Hitachi genuine oil may result in malfunction of the aftertreatment device.
Page 68 OPERATOR'S STATION  Do not modify the machine without authorization. Never attempt to modify the air inlet and exhaust parts such as the air duct, aftertreatment device and the exhaust piping. Also never attempt to disassemble the aftertreatment device. Avoid giving shocks on the aftertreatment device by striking elements with other objects or dropping the device.
Page 69  If approximately 48 hours have passed without regeneration being carried out, the engine trouble alarm will be displayed on the monitor (Refer to the page 1-26). Consult your authorized Hitachi dealer.  Both auto and manual regenerations restore aftertreatment device function. It is not a malfunction.
Page 70: Cab Features
OPERATOR'S STATION Cab Features 1- Left Control Lever/Horn Switch 2- Left Travel Pedal 3- Left Travel Lever 4- Right Travel Lever 5- Right Travel Pedal 6- Right Control Lever/Power Boost Switch 7- Multi Function Monitor Panel 8- Switch Panel 9- Key Switch 10- Regeneration Switch 11- Operator's Seat 12- Cab Door Release Lever...
Page 71: Multi Function Monitor
OPERATOR'S STATION Multi Function Monitor Feature The multi function monitor displays various meters, indicators, radio and air conditioner, numeric keypad lock function, rearview camera image, work mode selection and maintenance screen. Screen Configuration The multi function monitor consists of the following screens.
Page 72: Default Setting
OPERATOR'S STATION Default Setting Function Item Default Auto Shut-Down ON/OFF of Auto Shut-down Setting Time 1 min Aftertreatment Device Regeneration Inhibited Regeneration Inhibited NOTE: Typical functions are shown in the table. Check the initial values of other functions on each monitor screen.
Page 73: Basic Screen
OPERATOR'S STATION Basic Screen 1- Work Mode Display 2- Aftertreatment Device Display 3- Power Mode Display 4- Hour Meter, Clock 5- Auxiliary 6- Auxiliary 7- Preheat Display 8- Seat Belt Display 9- Fuel Gauge 10- Sub Meter Display 11- Radio Display 12- Air Conditioner Display 13- Coolant Temperature Gauge 14- Auxiliary...
Page 74: How To Use Screens
OPERATOR'S STATION How to Use Screens Displaying Basic Screen IMPORTANT: Start the engine after the basic screen is displayed. When the key switch is turned to the ACC or ON position, the starting screen displays for about 2 seconds. When the key switch is kept in ACC position, only hour meter, clock and radio will be displayed.
Page 75 OPERATOR'S STATION  Display of Meters Work Mode Items to be displayed 4- Hour Meter, Clock 9- Fuel Gauge 13- Coolant Temperature Gauge 19- DEF/AdBlue® Gauge  Work Mode Display The attachments being used are displayed. Digging Mode MDC1-01-001 Attachment Mode Breaker Pulverizer Crusher...
Page 76 OPERATOR'S STATION  Aftertreatment Device Display (2) Displays condition of the aftertreatment device.  Power Mode Display (3) Displays the power mode selected from the switch panel.  Preheat Display (7) While the current is being supplied to the glow plug, indicator (7) is displayed.
Page 77: Hour Meter
OPERATOR'S STATION  Auto-Idle Display (18) When the auto-idle is selected from the switch panel, auto- idle display (18) displays. When the key switch is turned ON while the auto-idle switch is also ON, auto-idle display (18) blinks for 10 seconds.
Page 78: Def/Adblue® Gauge
OPERATOR'S STATION DEF/AdBlue® Gauge The remaining DEF/AdBlue® amount is indicated on the segment display. When DEF/AdBlue® level becomes low, the last segment turns yellow. If the segment display turns yellow, immediately refill DEF/AdBlue®. IMPORTANT: Display of the DEF/AdBlue® gauge changes depending on the DEF/AdBlue®...
Page 79: Coolant Temperature Gauge
OPERATOR'S STATION Coolant Temperature Gauge The engine coolant temperature is indicated with a needle. Normally the needle is around the center of the scale during operation. M1U1-01-047 Operating Status Icon Display Displays icons indicating the current status of each of following items: Attachment (1) and aftertreatment device display (2) selected from the work mode selection screen;...
Page 80: Security Functions (Optional)
OPERATOR'S STATION Security Functions (Optional) Input Password IMPORTANT:  When required to activate the numeric keypad function, consult your authorized dealer.  If the password is forgotten, the machine must be modified. Be extremely careful not to forget the password. MDAA-01-003EN Starting Screen 1.
Page 81: Extending Password Duration Time
OPERATOR'S STATION Extending Password Duration Time IMPORTANT: This operation is applicable only to machines that require a password. By using the password duration screen, password duration time can be set. When restarting the machine, a password need not be input within the specified timeframe. 1.
Page 82: Alarm Occurrence Screen
OPERATOR'S STATION Alarm Occurrence Screen In case any abnormality occurs, alarm marks (1) are displayed on the basic screen. If six or more alarms are generated, alarm marks (1) can be scrolled by rotating switch (2). Indicator MDC1-01-316 MDCD-01-026 1-18...
Page 83 OPERATOR'S STATION Follow the procedure below to display detailed information for an alarm. Push selector knob (1) on basic screen (2) to display main menu (3). Rotate selector knob (1) to select alarm list (4), and push selector knob (1). Rotate selector knob (1) to select a required alarm from alarm list (5), and push selector knob (1).
Page 84: Remedy
Content of Alarm Urea SCR System Alarm* DEF/AdBlue® Level Is Low Or Urea SCR System Is Abnormal. Refill DEF/AdBlue® If Level Is Low. Consult Your Authorized Hitachi Dealer For System Malfunction. Engine Output Restriction Engine Output Is Restricted. Aftertreatment Device Aftertreatment Device Regeneration Is Needed.
Page 85 Exhaust Temperature Is Abnormally High. Stop Operation. Check The Exhaust Piping. Aftertreatment Device Aftertreatment Device Regeneration System Is Abnormal. Regeneration System Consult Your Authorized Hitachi Dealer. Abnormal Alternator Alarm Electrical System Is Abnormal. Check Alternator And Battery Systems. Fuel Level Alarm Fuel Level Is Low.
Page 86 OPERATOR'S STATION Display Alarm Name Content of Alarm Fuel Temperature Alarm Fuel Temperature Is Abnormally High. Stop Operation And Check For Any Abnormality Such As Clogged Fuel Cooler. Hydraulic Oil Filter Restriction Hydraulic Oil Filter Is Clogged. Replace Hydraulic Oil Filter Element. Alarm (Optional) Air Cleaner Restriction Alarm Air Cleaner Is Clogged.
Page 87: Urea Scr System Remedy
OPERATOR'S STATION Urea SCR System Remedy Display Alarm Name Content of Alarm DEF/AdBlue® Level Alarm* DEF/AdBlue® Level Is Low. Refill DEF/AdBlue®. DEF/AdBlue® Level Alarm* DEF/AdBlue® Is Insufficient. Refill DEF/AdBlue®. DEF Tank Empty. Engine Output Is Restricted. DEF/AdBlue® Level Alarm* DEF/AdBlue®Tank Is Empty. Refill DEF/AdBlue®.
Page 88 OPERATOR'S STATION  Fuel Sensor Error Display Coolant Temperature Fuel Sensor Error Display If the fuel sensor is faulty, the color of the fuel mark changes Sensor Error Display and the needle disappears. If the harness between the fuel sensor and the controller unit is broken, the needle disappears.
Page 89: Aftertreatment Device
OPERATOR'S STATION Aftertreatment Device Aftertreatment Device Condition Display Aftertreatment Device Display (1) displays the condition of the aftertreatment device. This mark indicates that the exhaust temperature is high during the aftertreatment device regeneration. It is lit while auto or manual regeneration is in process.
Page 90: Aftertreatment Device Manual Regeneration Request
OPERATOR'S STATION Aftertreatment Device Manual Regeneration Request The aftertreatment device needs regeneration. Usually, regeneration is performed automatically. However, manual regeneration is required depending on the conditions. The marks described below may be indicated on monitor (1). This mark indicates that the aftertreatment device manual regeneration is required.
Page 91: Manual Regeneration Procedure
OPERATOR'S STATION Manual Regeneration Procedure When manual regeneration is needed, screen (1) as shown in the right will be displayed. When this screen (1) is displayed, you need to perform manual regeneration. Before starting manual regeneration, be sure to check the following.
Page 92: Main Menu
OPERATOR'S STATION Main Menu Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). Main Menu screen (3) contains the items as shown in the figure right. Engine Output Restriction Is Temporary Released, Urea SCR System Troubleshooting and Alarm List will be displayed only when the engine output is limited, Urea SCR system is malfunctioning or an alarm is generated, respectively.
Page 93: Engine Output Restriction Suspend
OPERATOR'S STATION Engine Output Restriction Suspend When a lack of DEF/AdBlue® or Urea SCR system malfunction occurs, alarm mark (1) will be displayed on the basic screen and engine output / speed will be limited. IMPORTANT:  This function can be performed only one time at one engine output limit.
Page 94 OPERATOR'S STATION 3. Push selector knob (2) to display Engine Output Restriction Suspend screen (5). MDCD-01-026 4. Rotate selector knob (2) to highlight (6), and push selector knob (2) to display Engine Output Restriction Suspend screen (8). MDC1-01-522EN 5. Rotate selector knob (2) to highlight (7), then screen (9) is displayed and the engine output is temporarily released.
Page 95: Urea Scr System Troubleshooting
OPERATOR'S STATION Urea SCR System Troubleshooting In case any abnormality occurs, alarm marks (1) are displayed on the Basic Screen. Follow the procedure below to display detailed information for an alarm. 1. Push selector knob (2) on the Basic Screen to display Main Menu screen (3).
Page 96 OPERATOR'S STATION 4. When the troubleshooting is finished, fault code (7) is displayed. Consult your authorized dealer to repair the system. NOTE:  The main menu displays information about the Urea SCR System Troubleshooting is only displayed when the Urea SCR system alarm is generated.
Page 97: Air Conditioner
OPERATOR'S STATION Air Conditioner Most air conditioner functions are operated by using switches (3) and (4), however air vent selection and turning A/C ON and OFF are performed from the air conditioner setting screen in the menu. (Refer to the page 1-111) Circulation Air Mode 1.
Page 98: Radio
OPERATOR'S STATION Radio Most radio functions are operated by using switches (3) and (4), however memory channel setting, seek function, TONE adjustment, and AUTO PRESET are done at the radio screen in the main menu. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (5).
Page 99: Work Mode
OPERATOR'S STATION Work Mode IMPORTANT: Before changing the work mode, stop the machine, lower the working device such as a bucket on the ground and pull the pilot control shut-off lever to the LOCK position. Front attachment is selected in Work Mode screen (5) under the Work Mode menu in the main menu.
Page 100: Setting Menu
OPERATOR'S STATION Setting Menu Setting menu consists of date and time setting, attachment adjustment, attachment name, auto shut-down setting, change password, selecting sub meter, brightness adjustment of rear view camera monitor and screen. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3).
Page 101: Date And Time
OPERATOR'S STATION Date and Time Time, date and display mode can be set on this screen. Year- month-day format and 24h/12h display mode are selected in the display setting. Time Adjustment 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3).
Page 102 OPERATOR'S STATION 5. Push selector knob (2) to display Date and Time screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Time Setting (8). 7. Push selector knob (2) to display Time Setting screen (9). MDAA-01-117EN 8. Rotate selector knob (2) to highlight Hour or Minute (10) and push selector knob (2).
Page 103: Date Adjustment
OPERATOR'S STATION Date Adjustment 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Setting Menu (4). 3. Push selector knob (2) to display Setting Menu screen (5).
Page 104 OPERATOR'S STATION 5. Push selector knob (2) to display Date and Time screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Date Setting (8). 7. Push selector knob (2) to display Date Setting screen (9). MDAA-01-122EN 8. Rotate selector knob (2) to highlight Year, Month or Day (10) and push selector knob (2).
Page 105: Display Mode Setting
OPERATOR'S STATION Display Mode Setting 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Setting Menu (4). 3. Push selector knob (2) to display Setting Menu screen (5).
Page 106 OPERATOR'S STATION 5. Push selector knob (2) to display Date and Time screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Display Form (8). MDAA-01-228EN 7. Push selector knob (2) to display Display Form screen (9). 8. Rotate selector knob (2) to highlight Time or Date (10) and push selector knob (2).
Page 107: Attachment Adjustment
OPERATOR'S STATION Attachment Adjustment On the Attachment Adjustment screen, the supply flow rate to an attachment, the operational priority for combined operation of an attachment, and arm roll-in/arm roll-out can be adjusted. Attachment adjustment can be done when the work mode is set to an attachment other than bucket.
Page 108 OPERATOR'S STATION 5. Push selector knob (2) to display Attachment Adjust screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Pump Flow Rate (8). MDAA-01-129EN 7. Push selector knob (2) to display Pump Flow Rate screen (9). 8. Rotate selector knob (2) clockwise or counterclockwise to adjust the pump flow rate.
Page 109: Priority (Arm Roll-Out)
OPERATOR'S STATION Priority (arm roll-out) Select an attachment other than the bucket on the work mode screen. (Refer to the page 1-35) 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Setting Menu (4). 3.
Page 110 OPERATOR'S STATION 5. Push selector knob (2) to display Attachment Adjust screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Priority (Arm Roll- Out) (8). MDAA-01-235EN 7. Push selector knob (2) to display Priority (Arm Roll-Out) screen (9). 8. Rotate selector knob (2) clockwise to increase flow rate to the attachment.
Page 111: Priority (Arm Roll-In)
OPERATOR'S STATION Priority (arm roll-in) Select an attachment other than the bucket on the work mode screen. (Refer to the page 1-35) 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Setting Menu (4). 3.
Page 112 OPERATOR'S STATION 5. Push selector knob (2) to display Attachment Adjust screen (7). 6. Rotate selector knob (2) to highlight Priority (Arm Roll-In) MDCD-01-026 (8). 7. Push selector knob (2) to display Priority (Arm Roll-In) screen (9). MDAA-01-236EN 8. Rotate selector knob (2) clockwise to increase flow rate to the attachment.
Page 113: Attachment Name Input
OPERATOR'S STATION Attachment Name Input Attachment name can be changed on this screen. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Setting Menu (4). 3. Push selector knob (2) to display Setting Menu screen (5).
Page 114 OPERATOR'S STATION 5. Push selector knob (2) to display Attachment Name Input screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Desired Attachment Name (8). MDAA-01-134EN 7. Push selector knob (2) to display Name Change screen (9). 8. Rotate selector knob (2) right or left to highlight a character, and push selector knob (2).
Page 115: Auto Shut-Down
OPERATOR'S STATION Auto Shut-Down WARNING: This function automatically stops the engine. Pay extra attention to the work and work environment when using this function. The auto shut-down function can be set in this screen. Set the auto shut-down time and enable (ON) the function beforehand.
Page 116: Auto Shut-Down: Setting Time
OPERATOR'S STATION 5. Push selector knob (2) to display Auto Shut-Down screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight ON (Enable) (8). 7. Push selector knob (2) to set the auto shut-down function ON. Push selector knob (2) again to turn the auto shut-down function OFF.
Page 117: Aftertreatment Device Regeneration Inhibited
OPERATOR'S STATION Aftertreatment Device Regeneration Inhibited IMPORTANT: The aftertreatment device regeneration can be inhibited at this screen to prevent auto regeneration while operating the machine in a dusty area or indoors. Setting Procedure 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3).
Page 118 OPERATOR'S STATION 3. Push selector knob (2) to display Setting Menu screen (5). 4. Rotate switch (2) to highlight Aftertreatment Device Regeneration inhibited (6). 5. Push selector knob (2) to display aftertreatment device regeneration inhibited screen (7). 6. Rotate selector knob (2) to highlight (8), and push selector knob (2) to display Aftertreatment Device Regeneration Inhibited screen (9).
Page 119: Password Change (Optional)
OPERATOR'S STATION Password Change (Optional) 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). MDC1-01-001 MDCD-01-026 2. Rotate selector knob (2) to highlight Setting Menu (4). MDAA-01-114EN 1-55...
Page 120 OPERATOR'S STATION 3. Push selector knob (2) to display Setting Menu screen (5). 4. Rotate selector knob (2) to highlight Password Change (6). MDAA-01-156EN 5. Push selector knob (2) to display Password Change screen (7). MDCD-01-026 MDAA-01-157EN 6. Input current password from the numeric keypad. Current Password MDAA-01-158EN 1-56...
Page 121 OPERATOR'S STATION 7. Input the new password and push selector knob (2). 3 to 8 digits can be input for password. MDAA-01-159EN New Password MDAA-01-160EN 1-57...
Page 122 OPERATOR'S STATION 8. Input the new password again to confirm it and push selector knob (2). MDAA-01-161EN MDAA-01-162EN MDCD-01-026 9. The password has been changed. MDAA-01-163EN 1-58...
Page 123: Sub Meter
OPERATOR'S STATION Sub Meter A sub meter selection menu that can be added to the fuel meter is selected on this screen. OFF, Fuel Consumption Indicator and Breaker Hour Meter are provided. The breaker Sub Meter hour meter indicates the breaker operation time. 1.
Page 124 OPERATOR'S STATION 5. Push selector knob (2) to display Sub Meter Selection screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Desired Sub Meter (8). (Selecting OFF will not display a sub meter.) 7. Push selector knob (2) to enable the changes. NOTE: ...
Page 125: Rear View Camera Monitor
OPERATOR'S STATION Rear View Camera Monitor WARNING:  Switching the rear view camera monitor OFF may result in serious personal injury or damage to the machine, due to being unable to see the view from the rear of the machine. If the image from the rear view camera is not displayed on Basic Screen (1) of the monitor, follow the instructions on this page to display it.
Page 126 OPERATOR'S STATION 5. Push selector knob (2) to display Rear View Camera Monitor screen (7). MDCD-01-026 6. Push selector knob (2) to turn the rear view camera monitor ON. 7. Please confirm that the rear view image is displayed on the basic screen.
Page 127: Brightness Adjustment
OPERATOR'S STATION Brightness Adjustment 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). MDC1-01-001 MDCD-01-026 2. Rotate selector knob (2) to highlight Setting Menu (4). MDAA-01-114EN 3. Push selector knob (2) to display Setting Menu screen (5).
Page 128 OPERATOR'S STATION 5. Push selector knob (2) to display Brightness Adjustment screen (7). MDCD-01-026 6. Rotate selector knob (2) clockwise to make the screen brighter, counterclockwise to make the screen darker. MDAA-01-172EN NOTE:  When the light is turned ON, the monitor screen changes to night mode and mark (8) is displayed.
Page 129: Language Settings
OPERATOR'S STATION Language Settings 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). MDC1-01-001 MDCD-01-026 2. Rotate selector knob (2) to highlight Setting Menu (4). MDAA-01-114EN 3. Push selector knob (2) to display Setting Menu screen (5).
Page 130 OPERATOR'S STATION 5. Push selector knob (2) to display screen (7). 6. Rotate selector knob (2) to highlight the desired language. Push selector knob (2) to make the change. MDCD-01-026 NOTE: When a display is selected, the mark "" is displayed in green.
Page 131: Lists Of Display Language
OPERATOR'S STATION Lists of Display Language Language Screen Display Language Screen Display Japanese Indonesian English Thai Spanish Vietnamese Italian Myanmarese French Arabic German Persian Dutch Turkish Russian Danish Portuguese Estonian Finnish Polish Greek Icelandic Swedish Croatian Norwegian Slovenian Chinese (Simplified) Romanian Chinese (Traditional) Bulgarian...
Page 132: Unit Selection
OPERATOR'S STATION Unit Selection Unit system displayed on the monitor can be selected in this screen. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). MDC1-01-001 MDCD-01-026 2. Rotate selector knob (2) to highlight Setting Menu (4). MDAA-01-114EN 3.
Page 133 OPERATOR'S STATION 5. Push selector knob (2) to display Unit Selection screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight the Desired Unit System. Push selector knob (2) to set the unit (Metric or US system). MDAA-01-182EN 7. Before changing °C and °F, turn the blower of the air conditioner ON.
Page 134: Display Item Selection (Rear View Camera Off)
OPERATOR'S STATION Display Item Selection (Rear View Camera OFF) The display under the meters can be set to OFF (disable), Logo or Operational information. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). MDC1-01-001 MDCD-01-026 2.
Page 135 OPERATOR'S STATION 5. Push selector knob (2) to display Display Item Selection screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight the Desired Display. Push selector knob (2) to set the image. (Selecting OFF sets non-display.) NOTE: When a display is selected, the mark "" is displayed in green.
Page 136: Main Menu Sequence Change
OPERATOR'S STATION Main Menu Sequence Change Menu sequence of Air Conditioner, Radio and Work Mode can be changed in this screen. Frequently used menu can be located on top of the screen. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3).
Page 137 OPERATOR'S STATION 3. Push selector knob (2) to display Setting Menu screen (5). 4. Rotate selector knob (2) to highlight Main Menu Sequence Change (6). MDAA-01-186EN 5. Push selector knob (2) to display Main Menu Sequence Change screen (7). MDCD-01-026 6.
Page 138: Information Menu
OPERATOR'S STATION Information Menu The information menu includes Operation, Maintenance and Monitoring. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Information Menu (4). 3. Push selector knob (2) to display Information Menu screen (5).
Page 139: Operation
OPERATOR'S STATION Operation The Operation screen displays Fuel Consumption, Breaker Operation, Attachment Operation, Travel Operation, and Actual Operation menus. The Fuel Consumption screen displays fuel consumption, operating hours, and fuel consumption rate, for the period since the monitoring unit was last reset. The Breaker Operation screen displays breaker operating hours, machine operating hours and operating rate, for the period since the monitoring unit was last reset.
Page 140 OPERATOR'S STATION 5. Push selector knob (2) to display Operation screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Fuel Consumption (8). 7. Push selector knob (2) to display Fuel Consumption screen (9). MDAA-01-193EN The Machine Operation Hours, Fuel consumption, and Average Fuel Consumption rate can be checked on this screen.
Page 141: Breaker Operation
OPERATOR'S STATION Breaker Operation 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Information Menu (4). 3. Push selector knob (2) to display Information Menu screen (5). 4.
Page 142 OPERATOR'S STATION 5. Push selector knob (2) to display Operation screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Breaker Operation (8). 7. Push selector knob (2) to display Breaker Operation screen (9). MDAA-01-196EN Operating Time, Machine Operation Hours and Operation Ratio can be checked in this screen.
Page 143: Attachment Operation
OPERATOR'S STATION Attachment Operation 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Information Menu (4). 3. Push selector knob (2) to display Information Menu screen (5). 4.
Page 144 OPERATOR'S STATION 5. Push selector knob (2) to display Operation screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Attachment Operation (8). MDAA-01-199EN 7. Push selector knob (2) to display Attachment Operation screen (9). The attachment Operating Time can be checked in this screen.
Page 145: Travel Operation
OPERATOR'S STATION Travel Operation 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Information Menu (4). 3. Push selector knob (2) to display Information Menu screen (5). 4.
Page 146 OPERATOR'S STATION 5. Push selector knob (2) to display Operation screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Travel Operation (8). 7. Push selector knob (2) to display Travel Operation screen (9). MDAA-01-202EN Total Travel Operating Time can be checked in this screen. Push selector knob (2) to return to the previous screen.
Page 147: Actual Operation
OPERATOR'S STATION Actual operation 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Information Menu (4). 3. Push selector knob (2) to display Information Menu screen (5). 4.
Page 148 OPERATOR'S STATION 5. Push selector knob (2) to display Operation screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Actual Operation (8). 7. Push selector knob (2) to display Actual Operation screen (9). MDAA-01-205EN The actual Operating Time can be checked in this screen. Push selector knob (2) to return to the previous screen.
Page 149: Maintenance
OPERATOR'S STATION Maintenance The maintenance screen includes maintenance notice, remaining hours until the next maintenance, and maintenance intervals. Maintenance Items  Engine Oil  Engine Oil Filter  Hydraulic Oil  Hydraulic Oil Pilot Filter  Hydraulic Oil Full-Flow Filter ...
Page 150 OPERATOR'S STATION 5. Push selector knob (2) to display Maintenance screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight Maintenance Notice (8). 7. Push selector knob (2) to turn the Maintenance Notice ON. Push selector knob (2) again to turn the Maintenance Notice OFF.
Page 151: Remaining Time And Maintenance Interval
OPERATOR'S STATION Remaining Time and Maintenance Interval 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Information Menu (4). 3. Push selector knob (2) to display Information Menu screen (5).
Page 152 OPERATOR'S STATION 5. Push selector knob (2) to display Maintenance screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight a Maintenance Item to be checked (8). (In the example on the right, Engine Oil is selected.) 7. Push selector knob (2) to display the time remaining for the selected maintenance item.
Page 153: Monitoring
OPERATOR'S STATION Monitoring The engine speed can be checked. 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Information Menu (4). 3. Push selector knob (2) to display Information Menu screen (5).
Page 154 OPERATOR'S STATION 5. Push selector knob (2) to display Monitoring screen (7). MDCD-01-026 MDC1-01-221EN 1-90...
Page 155: Switch Panel
OPERATOR'S STATION Switch Panel 1- Return to Previous Screen Switch 2- Return to Basic Screen Switch 3- Selector Knob 4- Temperature Control Switch/Mode Switch 5- AUTO/OFF Switch/Fan Switch 6- AM/FM Selector/Tuning Switch 7- Power Switch/Volume Control Knob 8- Engine Control Dial 9- Auto-Idle Switch 10- Travel Mode Switch 11- Power Mode Switch...
Page 156: Return To Previous Screen Switch (Monitor)
OPERATOR'S STATION Return to Previous Screen Switch (Monitor) Push this switch to return to the previous screen. MDAA-01-010 Return to Basic Screen Switch (Monitor) Allows any screen to return to the basic screen. MDAA-01-011 Selector Knob (Monitor) Push : Push this switch while the basic screen is displayed, the menu screen opens.
Page 157: Am/Fm Selector/Tuning Switch (Radio)
OPERATOR'S STATION AM/FM Selector/Tuning Switch (Radio) Push : AM/FM is selected. Rotate : Adjusts radio frequency. MDAA-01-014 Power Switch/Volume Control Knob (Radio) Push : Turns power ON/OFF. Rotate : Adjusts the volume. MDAA-01-016 Engine Control Dial Fast Idle Use engine control dial (1) to adjust engine speed. The fully clockwise position : Fast Idle Counterclockwise : Slow Idle...
Page 158: Auto-Idle Switch
OPERATOR'S STATION Auto-Idle Switch Auto-idle switch (2) sets the engine speed control mode to either Auto-Idle ON or OFF.  Auto-Idle Speed When auto-idle switch (2) is turned to ON position, the engine speed decreases to the idle after approximately 4 seconds at the state in which the control lever is turned to MDAA-01-017 neutral.
Page 159: Power Mode Switch
OPERATOR'S STATION Power Mode Switch The two engine speed modes, ECO, PWR or H/P mode are selected by operating the power mode switch. MDAA-01-274  ECO (Economy) Mode Operate the machine in this mode when performing normal work. ECO is displayed on Power Mode Display (1). ...
Page 160: Wiper/Washer Switch
OPERATOR'S STATION Wiper/Washer Switch The wiper and the window washer are operated using the Middle Fast wiper/washer switch. Slow  Wiper Turn the wiper/washer switch to the specified position to operate the wiper. The wiper stops and is retracted. INT Position The wiper operates intermittently at the interval selected by the switch position as described below.
Page 161: Numeric Keypad
OPERATOR'S STATION Numeric Keypad Used for inputting password. Push the numeric keypad of 1 to 8 while the radio is ON, the radio station will switch to memorized channel of 1 to 8. When the light is turned ON, the monitor changes to night mode screen.
Page 162: Switch Panel (For Optional Equipments)
OPERATOR'S STATION Switch Panel (for Optional Equipments) Armrest Optional Switch Location NOTE: The optional switch locations differ, depending on the kinds of optional devices that the machine is equipped with. Before using the switches, confirm which types of optional devices the machine is equipped with. Raise the armrest when operating the optional switch.
Page 163: Travel Alarm Deactivation Switch (Optional)
OPERATOR'S STATION Travel Alarm Deactivation Switch (Optional) The travel alarm buzzer sounds during travel operation. When pushing the mark of travel alarm deactivation switch (1), the travel alarm buzzer function is deactivated. M1U1-01-035 Rear Light Switch (Optional) When rear light switch (2) is turned ON, the rear light at the rear of the cab roof comes ON.
Page 164: Electrical Control Main Switch (Optional)
OPERATOR'S STATION Electrical Control Main Switch (Optional) By placing the pilot control shut-off lever in the lock release position, and pressing electrical control main switch (4), indicator (5) lights, allowing use of the electrical control (attachment switch). Pressing electrical control main switch (4) one more time, turns indicator (5) to the OFF position.
Page 165: Key Switch
OPERATOR'S STATION Key Switch 1- OFF (Engine Off ) 2- ACC (Horn, Radio etc.) 3- ON (Engine ON) 4- START (Engine Start) MDC1-01-502 Power Boost Switch Power boost switch (5) is provided on the top of the right control lever. While pressing power boost switch (5), the maximum digging power is boosted within approximately 8 seconds to increase work capacity.
Page 166: Electrical Control Main Switch (Optional)
OPERATOR'S STATION Electrical Control Main Switch (Optional)  Attachment Switch (Assist Operation) (Main Operation) This switch (1) is mainly used for optional devices and attachments with a rotary or a tilt function. By placing the pilot control shut-off lever in the lock release position, and pressing electrical control main switch (1), indicator (2) will light.
Page 167: Cigar Lighter
OPERATOR'S STATION Cigar Lighter Using Cigar Lighter IMPORTANT: In case the cigar lighter does not pop out automatically 30 seconds after pushing the cigar lighter in, pull out the cigar lighter manually. Consult your authorized dealer. 1. Insert key switch (1). Turn it to "ACC" or "ON" position. MDC1-01-502 2.
Page 168: Cab Light Switch
OPERATOR'S STATION Cab Light Switch Push switch (1) on the cab light to turn the cab light ON. : The cab light comes and stays ON. (The light does not turn ON while the key OFF.) : The cab light goes OFF. Neutral : The cab light turns ON as the cab door is opened.
Page 169: Pilot Control Shut-Off Lever
OPERATOR'S STATION Pilot Control Shut-Off Lever Pilot control shut-off lever (1) functions to prevent the machine from being mistakenly operated when the operator accidentally touches the control lever or pedals when getting on or off the machine. WARNING:  Always pull pilot control shut-off lever (1) into the full LOCK position.
Page 170: Fuse Box
OPERATOR'S STATION Fuse Box 10- CONTROLLER 20- OPT.3 (ALT) 9- BACKUP 19- HORN 10 A 10 A 8- ECU 18- IDLE STOP 30 A 7- START 17- POWER ON MDAA-01-297 6- OPT.2 (ALT) 16- GLOW RELAY 20 A 5- OPT.1 (ALT) 15- AUX 10 A 4- SOLENOID...
Page 171: Auto Air Conditioner
OPERATOR'S STATION Auto Air Conditioner Features:  Full Auto-Temperature Control: Automatically controls the air temperature in the cab to maintain the temperature set by the temperature control switch regardless of outside air temperature and intensity of the sun.  Max. Cooling and Heating: Maximum cooling or heating can be obtained by rotating the temperature control switch clockwise (32 °C) or counterclockwise (18 °C) respectively.
Page 172: Name Of Components
OPERATOR'S STATION Name of Components 1- Front Vent 2- Foot Vent 3- Defroster Vent 4- Rear Vent 5- Temperature Control Switch/Mode Switch 6- AUTO/OFF Switch/Fan Switch NOTE: Air flow direction can be adjusted by moving the louvers on all air vents except for foot vent (2). The louvers MDAA-01-295 on front vents (1) and defroster vent (3) can be completely opened and closed by hand.
Page 173: Controller Part Name And Function
OPERATOR'S STATION Controller Part Name and Function  Mode Switch (5) Selects the air vent. The selected air vent is indicated on monitor (7). Air flows out of the front and defroster vents. (Including defroster vent) Air flows out of the front, rear and defroster vents. (Including defroster vent) Air flows out of the front, rear, foot and defroster vents.
Page 174 OPERATOR'S STATION  Fan Switch (6)  When AUTO indicator (8) is ON, the blower speed is automatically controlled.  When AUTO indicator (8) is OFF, the blower speed is controlled in 6 steps. Rotate blower switch (6) clockwise to increase blower speed.
Page 175: Cab Heater Operation
OPERATOR'S STATION Cab Heater Operation 1. AUTO/OFF switch (6): According to signals sent from various sensors, the air conditioner amplifier automatically selects the air flow-in vents, air suction ports, and air flow-in temperature at the vent, and controls the blower speed. 2.
Page 176: Cooling Operation
OPERATOR'S STATION Cooling Operation 1. AUTO/OFF switch (6): Push AUTO/OFF switch (6) to set the air conditioner AUTO mode. According to signals sent from various sensors, the air conditioner amplifier automatically selects the air flow-in vents, air suction ports, and air flow-in temperature at the vent, and controls the blower speed.
Page 177: Defroster Operation
OPERATOR'S STATION Defroster Operation 1. Push AUTO/OFF Switch (6) to blow out temperature- controlled air. When starting the engine during the cold season, the engine coolant temperature and air temperature in the cab are low. The Heater Start- Operation Control System controls the blow rate to the minimum (LO) in order to restrict cool air from flowing into the cab.
Page 178: Tips For Optimal Air Conditioner Usage
OPERATOR'S STATION Tips for Optimal Air Conditioner Usage Auto Air Conditioner Sensor For Rapid Cooling Temperature in the cab may rise over 80 °C (176 °F) when the machine is exposed to sun light in the summer. In this case, ventilate air in the cab first by opening the windows for rapid cooling.
Page 179: Am/Fm Radio Operation
OPERATOR'S STATION AM/FM Radio Operation CAUTION: Refrain from listening to the radio in the cab while operating the machine. Controls on the Radio 1- AM/FM Selector/Tuning Switch "FM" or "AM" is switched over alternately each time the switch is pressed. Rotate tuning switch (1) clockwise to increase frequency, counterclockwise to decrease frequency.
Page 180: Station Presetting Procedure
OPERATOR'S STATION Station Presetting Procedure Setting from Monitor 1. Select the desired station. Refer to the "Tuning Procedure" in the previous section. 2. Push selector knob (1) while displaying Basic Screen (2) to display Main Menu screen (3). Rotate selector knob (1) to highlight Radio (4).
Page 181: Station Auto-Presetting Procedure
OPERATOR'S STATION Station Auto-Presetting Procedure Receivable stations can be automatically detected and preset to the memory. 1. Push selector knob (1) while displaying Basic Screen (2) to display Main Menu screen (3). 2. Rotate selector knob (1) to highlight Radio (4). Push selector knob (1) to display Radio screen (5).
Page 182: Tone Control
OPERATOR'S STATION TONE Control 1. Push selector knob (1) while displaying Basic Screen (3) to display Main Menu screen (4). 2. Rotate selector knob (1) to highlight Radio (5). Push selector knob (1) to display Radio screen (6). 3. Rotate selector knob (1) to highlight TONE (7). 4.
Page 183: Audio Input
OPERATOR'S STATION Audio Input IMPORTANT: This function is available only to a machine equipped with an audio input. Use this function with proper sound volume. Audio Input Selection Attach the audio input device and push AM/FM Selector/ Tuning Switch (1) to display AM and FM screen as well as AUX input screen (3).
Page 184: Side View Camera System (Optional)
OPERATOR'S STATION Side View Camera System (Optional) Images from side cameras (right side of machine) (4) and side cameras (left side) (5) can be displayed on the side camera monitor (1) inside the cab. WARNING:  Check visibility before operating the machine. When visibility is poor, the field of vision cannot be ensured, which may lead to damage and/or serious injury.
Page 185 OPERATOR'S STATION Component Layout 1. Side camera monitor 2. Image toggle switch 3. Brightness adjustment switch 4. Side camera (right side of machine) 5. Side camera (left side of machine) Operating the Camera Once the key switch is turned to its ON position, side camera monitor (1) comes ON and an image is displayed on Once the key switch is turned to its OFF position, side camera monitor (1) turns OFF and no image is displayed.
Page 186: Content Of Monitor Display
OPERATOR'S STATION Content of Monitor Display Images from side camera (right side) (4) and side camera (left Front of side) (5) Machine MDC1-01-565 Image from side camera (right side) (4) IMPORTANT: When the image is only from side camera (right side) (4), use the operator seat mirror to ensure the field of vision on the left side of the machine.
Page 187: Adjusting The Position Of The Side Camera Monitor
OPERATOR'S STATION Adjusting the Position of the Side Camera Monitor The position of the monitor can be adjusted using axes (7) and (8) of the monitor bracket. IMPORTANT: When opening/closing the cab window, move the monitor to position A on the operator’s side.
Page 188: Cab Door Release Lever
OPERATOR'S STATION Cab Door Release Lever CAUTION:  Open the cab door all the way until it securely locks in the latch on the side of the cab.  Do not unlock the cab door when the machine is parked on a slope or while the wind is strong. The cab door may close accidently, possibly resulting in personal injury.
Page 189: Opening/Closing And Removing Cab Inside Window
OPERATOR'S STATION Opening/Closing and Removing Cab Inside Window WARNING:  Open, close or remove the upper front cab window, overhead window, cab door window or lower front window only after lowering the front attachment to the ground and pulling up pilot control shut-off lever (1) to the LOCK position.
Page 190: Opening Upper Front Window
OPERATOR'S STATION Opening Upper Front Window Opening Upper Front Window 1. Press lock release lever (1) at the upper center to release the upper front window lock. 2. Holding lock release lever (1) at the upper center and lower handle (4) on the upper front window as illustrated, pull the upper front window up and back until auto locks (3) at both sides of the upper front window securely catches into the strikers on the ceiling.
Page 191: Removing And Storing Lower Front Window
OPERATOR'S STATION Removing and Storing Lower Front Window CAUTION: Take care not to get yours fingers caught when handling the lower front window. Removing and Storing Lower Front Window 1. Open the upper front window beforehand when removing the lower front window. 2.
Page 192: Opening Side Window
OPERATOR'S STATION Opening Side Window Hold handle (1) and slide windowpane to open the side window. MDC1-01-547 Side Window 1-128...
Page 193: Opening/Closing Overhead Window (Clear Hatch)
OPERATOR'S STATION Opening/Closing Overhead Window (Clear Hatch) Move locks (1) toward center of window. Hold handle (2) and lift window until it rises upright. With the window positioned upright, it will be secured in position by dampers (3). Hold handle (2) and pull window down until "click" sound is heard from left and right locks (1).
Page 194: Emergency Exit
OPERATOR'S STATION Emergency Exit Escape from the cab in emergency in the following methods: CAUTION: The danger of falling is always present when escaping from the cab in emergency, possibly resulting in serious personal injury. Escape from the cab as safely as possible, depending on the position of the machine and the situation outside.
Page 195: Console Height Adjustment
OPERATOR'S STATION Console Height Adjustment Adjust the console height to the operator's comfort and/or work conditions. Console height can be vertically adjusted to 3 positions at 20 mm intervals. CAUTION: Before adjusting the console, support the console. Failure to do so may result in the console dropping suddenly, possibly causing personal injury.
Page 196: Adjusting Operator's Seat
OPERATOR'S STATION Adjusting Operator's Seat WARNING: Adjust the seat only after lowering the front attachment to the ground and pulling up the pilot control shut-off lever to the LOCK position. Failure to do so may allow the machine to move unexpectedly if a control lever or pedal is mistakenly touched with a part of the body, possibly resulting in personal injury or death.
Page 197: Backrest Adjustment
OPERATOR'S STATION Backrest Adjustment Pull up lever (5) to release backrest lock. Move backrest to the desired position and release lever (5). MDAA-01-331 Armrest Adjustment Armrest (6) can be pulled upright by hand 90°. Pull the armrest upright by hand to get on and off the machine easily.
Page 198: Installation And Adjustment Of Mirrors
OPERATOR'S STATION Installation and Adjustment of Mirrors WARNING:  Adjust the mirrors, referring to the field of vision in the mirrors in the "VISIBILITY MAP" chapter. Perform adjustment with the machine position as shown.  If the mirrors are adjusted improperly, the field of vision cannot be ensured and/or will be obstructed, which may result in serious personal injury.
Page 199: Mirror Installation Diagram
OPERATOR'S STATION Mirror Installation Diagram The mirror installation locations (1, 2, 3, 4) on this machine are shown in the right. Adjust the installation locations of each mirror by following the instructions below to ensure safety. Installation angle and dimension varies depending on the model.
Page 200 OPERATOR'S STATION  Fuel Tank Handrail Mirror (3) Adjust the mirror to the specified position. Adjust the mirror so that a range of at least 1 m from the 390 mm right side of the machine can be seen from the operator’s 70 mm seat.
Page 201 OPERATOR'S STATION  Aftertreatment Device Cover Mirror (4) Adjust the mirror to the specified position. Adjust the mirror so that a range of at least 1 m from the right side of the machine can be seen from the operator’s seat.
Page 202: Seat Belt
OPERATOR'S STATION Seat Belt WARNING:  Be sure to use seat belt (1) when operating the machine.  Before operating the machine, be sure to examine seat belt (1) and attaching hardware for any failure. If any damage and/or wear are found, replace the part concerned.
Page 203: Battery Disconnect Switch
OPERATOR'S STATION Battery Disconnect Switch IMPORTANT:  Do not turn the battery disconnect switch OFF while engine is running or the key switch is in another position than the OFF position. Failure to do so may damage the electrical system.  The DEF/AdBlue®...
Page 204: Switch Operation
OPERATOR'S STATION Switch Operation 1. Open cover (1). When lever (3) is in the diagonal bottom position, the battery disconnect switch is ON. When lever (3) is in the diagonal bottom position, lever (3) can not be removed. 2. Check that lamp (2) is not lit. Lamp (2) goes off 5 minutes after the key switch is turned to OFF.
Page 205: Break-In
BREAK-IN Observe Engine Operation Closely IMPORTANT: Use extra caution during the first 50 hours of operation, until you become thoroughly familiar with the sound and feel of your new machine. 1. Only operate the machine in economy (ECO) mode and limit engine horsepower to around 80 % of its full load.
Page 206 BREAK-IN MEMO ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 207: Operating The Engine
OPERATING THE ENGINE Inspect Machine Daily Before Starting Perform the required daily check before starting the engine. Engine  Level of engine oil and coolant*  Ease of starting, exhaust gas color, and noise  Oil and water leaks, damage to hoses and pipe lines* ...
Page 208: Before Starting Engine
OPERATING THE ENGINE Before Starting Engine 1. Ensure that the battery disconnect switch is in the ON position. 2. Confirm that pilot control shut-off lever (1) is in the LOCK position. 3. Confirm that all control levers are placed in neutral. 4.
Page 209: Starting The Engine
OPERATING THE ENGINE Starting the Engine Starting the Engine in Ordinary Temperature 1. Confirm that pilot control shut-off lever (1) is in the LOCK position. 2. Turn engine control dial (3) to the slow idle position. 3. Sound horn to alert bystanders 4.
Page 210 OPERATING THE ENGINE NOTE: When the key switch is turned ON, the maintenance notification (4) for the item whose maintenance interval has expired displays for 10 seconds. Push Return to Previous Screen switch (5) or turn the pilot control shut-off lever to the UNLOCK position while the rear view camera is enabled to delete the notification.
Page 211 OPERATING THE ENGINE 9. Release key switch (2) just after the engine has started. Key switch (2) will automatically return to the ON position. NOTE:  The engine speed will be kept to slow idle speed just after the engine starts. When engine speed control indicator (7) is displayed, slow idle speed will be maintained.
Page 212 OPERATING THE ENGINE Starting in Cold Weather Preheating 1. Confirm that pilot control shut-off lever (1) is in the LOCK position. 2. Turn engine control dial (3) to around the middle between the L and H position. 3. Sound the horn to alert bystanders. 4.
Page 213 OPERATING THE ENGINE NOTE: When the key switch is turned ON, maintenance notification (4) for the item whose maintenance interval has expired displays for 10 seconds. Push Return to Previous Screen switch (5) or turn the pilot control shut-off lever to the UNLOCK position while the rear view camera is enabled to delete the notification.
Page 214 OPERATING THE ENGINE 9. Release key switch (2) just after the engine has started. Key switch (2) will automatically return to ON position. NOTE:  The engine speed will be kept to slow idle speed just after the engine starts. When engine speed control indicator (7) is displayed, slow idle speed will be maintained.
Page 215: Check Instruments After Starting
OPERATING THE ENGINE Check Instruments After Starting Checking instruments through monitor functions After starting the engine, check the following points through the monitor functions. 1. Check that alternator alarm indicator (1) is OFF. In case alternator alarm indicator (1) stays ON, immediately stop the engine.
Page 216: Using Booster Batteries
OPERATING THE ENGINE Using Booster Batteries IMPORTANT: The machine electrical system is a 24 volt negative (-) ground. Use only 24 volt booster batteries with sufficient capacity. WARNING:  An explosive gas is produced while batteries are in use or being charged. Keep open flames and sparks away from the battery area.
Page 217 OPERATING THE ENGINE Disconnecting the booster cables Battery Disconnect Switch 1. Disconnect black negative (-) cable (2) from the machine frame first. (Red) 2. Disconnect the other end of black negative (-) cable (2) from the booster batteries. 3. Disconnect red positive (+) cable (1) from the booster batteries.
Page 218: Stopping The Engine
OPERATING THE ENGINE Stopping the Engine Engine Stop Procedure 1. Except for special cases, before stopping the engine, lower the bucket to the ground. 2. Pull pilot control shut-off lever (3) to LOCK position. 3. Turn engine control dial (1) to the slow idle position and SA-390 run the engine for 5 minutes to cool the engine.
Page 219: Engine Auto-Stop In Extremely Low Temperature
OPERATING THE ENGINE Engine Auto-Stop in Extremely Low Temperature WARNING: This function automatically stops the engine. Take extra care on the work and work environment when using this function. IMPORTANT: If the machine is left unoperated in an environment with temperatures under -20°C or lower for a long period of time, exhaust gas particles may accumulate in the aftertreatment device, and may result in damage to the device.
Page 220 OPERATING THE ENGINE MEMO ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 221: Driving The Machine
DRIVING THE MACHINE Travel Levers and Pedals Front Travel Operation Travel operation of this machine is controlled by using levers and pedals. WARNING: If the travel motors are located at the front Front Idler of the machine, the machine will move in the reverse direction to that shown on the operation instruction decal.
Page 222 DRIVING THE MACHINE  Pivot Turn The machine direction is changed by driving one of two crawlers with either left or right travel levers (or pedals). M104-04-010 Pivot Turn M104-04-005  Spin Turn The machine direction is changed by driving two crawlers in opposite direction at a time by operating one lever (or pedal) to forward and another lever (or pedal) to reverse.
Page 223: Travel Mode Switch
DRIVING THE MACHINE Travel Mode Switch WARNING: Tipping-over accidents can cause serious personal injury. Do not change travel mode switch (1) while traveling. In particular, changing to fast mode (2) while descending a slope is very dangerous. Always stop the machine before changing the travel speed mode.
Page 224: Operating On Soft Ground
DRIVING THE MACHINE Operating on Soft Ground • Avoid traveling on very soft ground that does not have sufficient strength to firmly support the machine. • If the machine is operated on very soft ground or becomes stuck, it may be necessary to clean the track frame area. • Swing the upperstructure 90 ° and lower the bucket to raise one track off the ground. Keep the angle between the boom and arm 90 to 110 °...
Page 225: Towing Machine A Short Distance
DRIVING THE MACHINE Towing Machine a Short Distance Soft Protector CAUTION: Cables, straps, or ropes can break causing serious injury. Do not tow the machine with damaged chains, frayed cables, slings, straps, or wire ropes. Always wear gloves when handling cable, straps or wire ropes.
Page 226: Operating In Water Or Mud
DRIVING THE MACHINE Operating in Water or Mud The machine can be operated in water up to the upper edge of the upper rollers only if water is flowing slowly, and the worksite ground is firm enough to prevent the machine from sinking past the upper edge of the upper roller.
Page 227: Parking The Machine On Slopes
DRIVING THE MACHINE Parking the Machine on Slopes WARNING: Avoid parking machine on slopes. The machine may tip over, possibly resulting in personal injury. If parking the machine on a slope is unavoidable:  Thrust the bucket teeth into the ground. ...
Page 228 DRIVING THE MACHINE MEMO ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 229: Operating The Machine
OPERATING THE MACHINE Control Lever (ISO Pattern) WARNING:  Never extend any part of body beyond window bars or frame, as it could be crushed, if boom control lever is accidentally bumped or otherwise engaged. Never remove the window sash bar. ...
Page 230: Pilot Control Shut-Off Lever
OPERATING THE MACHINE Pilot Control Shut-Off Lever Pilot control shut-off lever (1) functions to prevent misoperation of the machine if control levers and pedals are accidentally moved when leaving the operator's seat or when entering the cab. WARNING: Always pull pilot control shut-off lever (1) into the full LOCK position.
Page 231: Warming-Up Operation
OPERATING THE MACHINE Warming-Up Operation In cold weather, warm up the machine until coolant and hydraulic oil temperature increases to the appropriate operating temperature. Slow Idle IMPORTANT:  The appropriate hydraulic oil operating temperature on this machine is 50 to 80 °C. Hydraulic components may be seriously damaged if the machine is operated with low temperature hydraulic oil.
Page 232: Engine Speed Control
OPERATING THE MACHINE Engine Speed Control Increase and decrease the engine speed using engine control dial (1) located on the switch panel, as illustrated.  Turn engine control dial (1) clockwise to increase the engine speed. Turn engine control dial (1) counterclockwise to decrease the engine speed.
Page 233: Auto-Idle
OPERATING THE MACHINE Auto-Idle Auto-Idle Function When auto-idle switch (3) is turned to the A/I ON position, approximately 4 seconds after all control levers are returned to neutral, the engine speed decreases to the auto-idle setting to save fuel consumption. The engine speed will immediately increase to the speed set by engine control dial (2) when any control lever is operated.
Page 234: Auto-Idle On/Off
OPERATING THE MACHINE Auto-Idle ON/OFF Note that the auto-idle function can be turned ON or OFF by using auto-idle switch (3) only when the key switch is in ON position. Always check if the auto-idle function is turned ON or OFF with auto-idle indicator (1).
Page 235: Auto Shut-Down
OPERATING THE MACHINE Auto Shut-Down WARNING: This function automatically stops the engine. Take extra care on the work and work environment when using this function. When the auto shut-down function is turned ON, the engine automatically stops after the preset time at the state in which the pilot control shut-off lever is pulled.
Page 236 OPERATING THE MACHINE IMPORTANT:  Even if the auto shut-down function is ON, the engine will not stop during manual regeneration of the aftertreatment device.  When the auto shut-down activates, the air conditioner will also stop. Setting the Auto Shut-Down Function Auto Shut-Down: On/Off 1.
Page 237 OPERATING THE MACHINE 5. Push selector knob (2) to display Auto Shut-Down screen (7). MDCD-01-026 6. Rotate selector knob (2) to highlight ON (8). 7. Push selector knob (2) to turn the Auto Shut-Down function ON. Push selector knob (2) again to turn the auto shut-down function OFF.
Page 238: Aftertreatment Device Manual Regeneration
OPERATING THE MACHINE Aftertreatment Device Manual Regeneration Manual Regeneration Procedure When the manual regeneration is needed, screen (1) as shown on the right side will be displayed. When screen (1) is displayed, you need to perform the manual regeneration. Before starting the manual regeneration, be sure to check the following.
Page 239 OPERATING THE MACHINE 6. When the manual regeneration is finished, "Regeneration Has Completed." message will be displayed. If "Regeneration Has Failed." message is displayed, start the manual regeneration process again. Regeneration process may fall in conditions other than those mentioned above (such as sensor malfunction or low ambient temperature).
Page 240: Work Mode
OPERATING THE MACHINE Work Mode Select Work Mode in the main menu, and select the appropriate hydraulic circuit and pump flow rate for the front attachment at Work Mode screen. When the engine is started, the digging mode is automatically set.
Page 241 OPERATING THE MACHINE The selected work mode is indicated by attachment mode indicator (2) on Basic Screen (1). Select the work mode corresponding to the work in which the machine is engaged, referring to the table below. Work Mode Description Digging Mode Select this mode when using bucket.
Page 242 OPERATING THE MACHINE Attachment Selection 1. Push selector knob (2) while displaying Basic Screen (1) to display Main Menu screen (3). 2. Rotate selector knob (2) to highlight Work Mode (4). 3. Push selector knob (2) to display Work Mode screen (5). 4.
Page 243: Power Boost Switch
OPERATING THE MACHINE Power Boost Switch Power boost switch (4) is located on the top of the right control lever. When power boost switch (4) is pushed, increased front attachment power will be supplied for about 8 seconds. MDAA-01-361 5-15...
Page 244: Power Mode
OPERATING THE MACHINE Power Mode Three engine speed modes, ECO, PWR and H/P mode is selected by operating power mode switch (1). ECO (Economy) Mode Operate the machine in this mode when performing normal work. ECO is displayed on Power Mode Display (2). PWR (Power) Mode Use PWR (Power) mode when extra horsepower is needed.
Page 245: Operating Backhoe
OPERATING THE MACHINE Operating Backhoe  Use the appropriate arm and bucket for the work. (Refer to the "Bucket Types and Applications" in the Specifications chapter.)  Pull the bucket toward the machine using the arm as the main digging force. ...
Page 246: Face Shovel
OPERATING THE MACHINE Face Shovel Backhoe operation digs the ground using the bucket in a roll- in motion. Face shovel operation digs the ground using the arm cylinder in a scraping motion. WARNING: Take care not to hit the cab when rolling in the arm with a reversed-installed bucket.
Page 247: Grading Operation
OPERATING THE MACHINE Grading Operation Operate the boom, arm, and the bucket in such a way so that the bucket teeth move horizontally, constantly keeping them perpendicular to the ground at the grading operation. IMPORTANT: Do not pull or push dirt with the bucket when traveling.
Page 248: Do Not Strike The Ground With Bucket Teeth
OPERATING THE MACHINE Do Not Strike the Ground with Bucket Teeth WARNING: Forcibly striking the bucket teeth on the ground may result in personal injury from flying debris. It will also shorten the service life of each part on the front attachment. If the bucket teeth are forcibly struck on the ground, it shortens the service life of the front attachment parts (especially the bucket).
Page 249: Avoid Abusive Operation
OPERATING THE MACHINE Avoid Abusive Operation Do not attempt to add additional digging force by using travel, raising the rear of the machine to use the machine’s weight. MZX5-05-005 Never Move an Object Sideways with the Bucket For example, do not swing the bucket to level material or do not strike objects sideways with the bucket.
Page 250: Do Not Use Wide Track Shoes On Rough Ground
OPERATING THE MACHINE Do Not Use Wide Track Shoes on Rough Ground Never use wide track shoes on rough ground such as rocks, sand or gravel. Wide track shoes are designed for soft ground. Failure to do so may result in shoe bending and/or shoe bolt loosening, and may damage other undercarriage components such as track link and rollers.
Page 251: Shackle Hole Usage
OPERATING THE MACHINE Shackle Hole Usage Shackle hole for towing light weight objects. A shackle hole is provided on the track frame to tow light weight objects as specified below. IMPORTANT: Be sure to conform to the restrictions and precautions stated below when towing a light weight object using the shackle hole provided on the track Wire Rope frame.
Page 252: How To Lower Boom In Case Of Emergency And When Engine Stops
OPERATING THE MACHINE How to Lower Boom in Case of Emergency and When Engine Stops (Without hose-rupture safety valve) WARNING: Prevent personal injury. Confirm that no one is under the front attachment before starting the procedure below. In case the engine suddenly stops and the engine cannot be restarted, lower the boom by following the procedure below.
Page 253: Precautions For After Operations
OPERATING THE MACHINE Precautions for After Operations  After finishing the day's operation, drive the machine to a firm, level ground where no possibility of falling stones, ground collapse, or floods are present. (Refer to the section "PARKING THE MACHINE" in the DRIVING THE MACHINE chapter.) ...
Page 254 OPERATING THE MACHINE MEMO ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 255: Transporting
TRANSPORTING Transporting by Road When transporting the machine on public roads, be sure to first understand and follow all local regulations.  When transporting the machine using a trailer, check the width, height, length and weight of the trailer with the machine loaded.
Page 256: Loading/Unloading On A Trailer
TRANSPORTING Loading/Unloading on a Trailer Always load and unload the machine on a firm, level surface. WARNING: Be sure to use a loading dock or a ramp for loading/unloading. Never use the front attachment functions when loading or unloading the machine. Ramp/Loading Dock: 1.
Page 257 TRANSPORTING Loading/Unloading WARNING:  Always turn the auto-idle switch OFF when loading or unloading the machine. In auto-idle mode, speed may automatically increase.  Always select slow speed mode with the travel mode switch.  Never steer while driving up or down a ramp, it is extremely dangerous and may cause the machine to turnover.
Page 258 TRANSPORTING 3. When the front attachment is fitted 3.1 Determine a position for the bucket in line with the trailer. Adjust the angle of the boom and the arm at 90 to 110 °. 3.2 Lower the bucket onto to the deck of the trailer before the machine passes over the end of the ramp for support.
Page 259: Fastening Machine For Transporting
TRANSPORTING Fastening Machine for Transporting WARNING: Fasten the machine frame to the deck securely with chains and cables. While traveling, loads may shake around, move forward or backward or to the sides. 1. Place cog stoppers or blocks in front of and behind the tracks to help secure the machine.
Page 260 TRANSPORTING 2. The bucket must be on the ground before the machine begins to tip forward. 3. As the machine moves forward, raise the boom and extend the arm until the machine is completely off the ramp. M107-06-015...
Page 261: Lifting Machine
TRANSPORTING Lifting Machine WARNING:  Use lifting cables and other lifting tools that are sufficient strong, and free from any damage and/or other detect.  Consult your authorized dealer for correct lifting procedures, and the size and types of lifting cable and tools.
Page 262 TRANSPORTING Lifting 1. Fully extend the arm and bucket cylinders. Lower Support the boom until the bucket comes in contact with the ground. Center of Gravity 2. Pull the pilot control shut-off lever to the LOCK position. 3. Stop the engine. Remove the key from the key switch. 4.
Page 263: Maintenance
IMPORTANT:  Use only specified fuel, DEF/AdBlue®, lubricants and coolant.  Be sure to use only genuine Hitachi parts. Failure to do so may result in serious injury or death and/or machine breakdown.  Failure to use recommended fuel, lubricants, and genuine Hitachi parts will result in loss of Hitachi product warranty.
Page 264 MAINTENANCE  Body Information Controller This machine provides a body information controller that stores machine operation information for preventive maintenance. When maintaining the machine, our authorized service man may down load the stored information. Consult with your authorized dealer for detailed function of this device. ...
Page 265: Layout
MAINTENANCE Layout MDD5-01-001 Tooth Swing Reduction Gear Radiator, Oil Cooler, Inter Washer Tank Side Cutter Hydraulic Oil Tank Cooler Track Adjuster Bucket Fuel Tank DEF/AdBlue® Tank Front Idler Link A Engine Center Joint Air Cleaner Link B Aftertreatment Device Battery Control Lever Bucket Cylinder DEF/AdBlue®...
Page 266: Check The Hour Meter Regularly
MAINTENANCE Check the Hour Meter Regularly Refer to the List of Check and Maintenance for information about lubricants, check and adjustment intervals. The maintenance guide table is affixed to the reverse side of the front right cover. Refer to the next page. This manual recommends grouping the intervals into three categories as follows: Daily Check...
Page 267: Maintenance Guide Table
MAINTENANCE Maintenance Guide Table The maintenance guide table is affixed to the reverse side of the front right cover. Lubricate and/or service the parts at the intervals as instructed in the table so that all necessary maintenance can be performed regularly. ...
Page 268 MAINTENANCE  Maintenance Guide Table MDD5-07-050 Lubrication Interval (hours) Item Page Item Page 1 Engine Oil 7-25 10 Hydraulic Oil Filter (Pilot) 7-27 2 Coolant (Long-Life Coolant) 7-68 11 Hydraulic Oil Filter (Air Breather) 7-45 3 Grease 7-23 12 Engine Oil Filter 7-26 4 Grease (Every 500 hours.
Page 269: Preparations For Inspection And Maintenance
MAINTENANCE Preparations for Inspection and Maintenance Except in special cases, park the machine by following the procedure before servicing the machine. 1. Park the machine on a firm, level surface. 2. Lower the bucket to the ground. M104-07-021 3. Turn the auto-idle switch OFF. 4.
Page 270: Hood And Access Covers
MAINTENANCE Hood and Access Covers WARNING:  Do not keep the hood and access covers open when the machine is parked on a slope, or while the wind is blowing hard. The hood or access covers may close accidentally, possibly resulting in personal injury. ...
Page 271: Maintenance Guide
 When a bucket which does not have clearance adjustment mechanism such as slope-finishing bucket or V-type bucket, or a genuine Hitachi hoe bucket before EX-5 model, or an attachment other than genuine Hitachi bucket is used, grease two pins every 250 hours.
Page 272 MAINTENANCE C. Transmission Interval (hours) Parts Quantity Page 100 250 500 1000 2000 Check Oil Level 7-30 Pump 1.7 L Change ZX345USLC-6N 7-30 Transmission (1.8 US qt) Air Breather Cleaning 7-30 Check Oil Level 7-31 Swing Reduction 11.7 L Gear Change ZX345USLC-6N 7-31 (3.1 US gal)
Page 273 MAINTENANCE E. Fuel System Interval (hours) Parts Quantity Page 500 1000 2000 1. Drain Fuel Tank Sump 7-52 2. Drain Fuel Pre-Filter 7-53 3. Replace Fuel Main Filter Element (or when indicator lit) 7-56 4. Replace Fuel Pre-Filter Element (or when indicator lit) 7-58 for leaks, cracks −...
Page 274 IMPORTANT:  Use soft water as a coolant. Do not use strong acid or alkaline water. Use the coolant with genuine Hitachi Long-Life Coolant (LLC) mixed by 30 to 50 %. If a coolant mixed with less than 30 % of Hitachi Long-Life Coolant is used, service life of the cooling parts may be shortened due to damage by freezing or corrosion of coolant system parts.
Page 275 MAINTENANCE I. Miscellaneous Interval (hours) Parts Quantity Page 100 250 500 1000 2000 4500 1. Check and Replace Bucket Teeth − 7-82 2. Change Bucket − As required 7-84 3. Convert Bucket Connection Into Face Shovel − As required 7-85 4.
Page 276 MAINTENANCE J. Aftertreatment Device Interval (hours) Parts Quantity Page 100 250 500 1000 2000 4500 1. Check and Clean Aftertreatment Device − As required 7-117 K. Urea SCR System Interval (hours) Parts Quantity Page 100 250 500 1000 2000 4500 1.
Page 277: Periodic Replacement Of Parts
MAINTENANCE Periodic Replacement of Parts To ensure safe operation, be sure to conduct periodic inspection of the machine. In addition, the parts listed below, if defective, may pose serious safety/fire hazards. These parts may cause serious safety/fire hazards due to deterioration, wear, or fatigue being attributed to material aging or repeated operation.
Page 278: Kind Of Oils
Hitachi Genuine Engine Oils.  If you do not use Hitachi Genuine Engine Oil, use engine oil conforming to JASO DH-2. Otherwise, engine and aftertreatment device may suffer damage or performance of engine and aftertreatment device may deteriorate.
Page 279 Hitachi Genuine Gear Oil and Hitachi Genuine Engine Oil .  If you do not use Hitachi Genuine Gear Oil or Hitachi Genuine Engine Oil , use gear oil or engine oil conforming to specifications described above. Otherwise, the machine may suffer damage.
Page 280 Air Temperature (degrees Celsius) Where to be Applied Kind of Oil Engine Oil Pan Engine Oil Hitachi Genuine Engine Oil DH-2 10W-40 Hitachi Genuine Engine Oil DH-2 10W-40 Pump Transmission Engine Oil Hitachi Genuine Engine Oil DH-1 15W-40 Swing Reduction Gear...
Page 281: List Of Consumable Parts
MAINTENANCE List of Consumable Parts Filter Elements Part No. Quantity Full-Flow Filter (with O-ring) YA00033065 High Performance Full-Flow Filter YA00033064 Hydraulic Air Breather Element 4437838 Pilot Oil Filter (with O-ring) 4630525 Engine Oil Filter 4658521 Fuel Main Filter Element YA00033486 Fuel Pre-Filter Element YA00005785 Air Cleaner Element (outer)
Page 282 MAINTENANCE Optional Parts Part No. Quantity Tooth 4507888 One Point Ripper 4507890 Bushing Rubber 4507891 Tooth 4507888 4507890 Ripper Bucket Bushing Rubber 4507891 Tooth 4383048 Lock Pin 4383069 Tooth 4400253 Lock Pin 4383465 Shroud 4435856 Rock Bucket Shroud 4435857 Bolt J932780 J951027 Washer...
Page 283: Greasing
MAINTENANCE A. Greasing Front Joint Pins --- every 500 hours (first time after 250 hours) Lubricate all fittings shown in the figure. M178-07-007  Boom Cylinder Bottom Side M157-07-156  Boom Foot MDD5-07-004 7-21...
Page 284 MAINTENANCE  Boom and Arm Joint Pin, Arm Cylinder Rod Pin and Bucket Cylinder Bottom Pin M157-07-157  Boom Cylinder Rod Pins and Arm Cylinder Bottom Pin MDD5-07-004 7-22...
Page 285: Swing Bearing
MAINTENANCE Swing Bearing --- every 500 hours CAUTION: Lubricating both the swing bearing and gear, and rotating the upperstructure must be done by one person. Before you lubricate the swing bearing, clear the area of all persons. Each time you leave the cab ...
Page 286: Swing Internal Gear
MAINTENANCE Swing Internal Gear --- every 500 hours CAUTION: Before lubricating the machine, lower the bucket on the ground, stop the engine and pull the pilot control shut-off lever to the LOCK position. 1. Remove cover (1) from upperstructure. Check if the swing internal gear is properly lubricated by grease.
Page 287: Engine
MAINTENANCE B. Engine Check Engine Oil Level ---daily 1. Confirm that pilot control shut-off lever (1) is in the LOCK position. 2. Confirm that all control levers are placed in neutral. 3. Insert key (2) into the key switch. Turn it to ON position. Press and hold switch (3) with the engine stopped.
Page 288 MAINTENANCE --- Visual Inspection IMPORTANT: Incorrect engine oil level may cause trouble in the engine (The oil level should be between the upper and lower marks on dipstick (1)). Even if the engine oil level exceeds the upper limit, maintain oil to the proper level before starting the engine.
Page 289: Change Engine Oil
MAINTENANCE Change Engine Oil --- every 500 hours Replace Engine Oil Filter --- every 500 hours CAUTION: Engine oil may be hot just after operation. Take extra care to avoid burns. After refilling, make sure oil filler cap (2) is securely closed.
Page 290 MAINTENANCE 14. Open the right access cover and secure the cover with rod. 15. Remove engine oil filter (6) by turning it counterclockwise with the filter wrench. 16. Clean filter (6) gasket contact area on the engine. 17. Put mew oil in from primary side (7) of new cartridge element (6) so it does not overflow.
Page 291: Check And Clean Around The Engine
MAINTENANCE Check and Clean Around the Engine ----- as required IMPORTANT: Check for flammable materials in the area around the engine and clean that area. When the machine is operated in dusty areas, refer to the page 9-1 "Maintenance Under Special Environmental Conditions". 7-29...
Page 292: Transmission
MAINTENANCE C. Transmission Pump Transmission Check Oil Level --- every 250 hours 1. Park the machine on a firm, level surface. 2. Lower the bucket to the ground. 3. Turn the auto-idle switch off. IMPORTANT: The turbocharger may be damaged if the engine is not properly shut down.
Page 293: Swing Reduction Gear
MAINTENANCE Swing Reduction Gear Check Oil Level --- every 500 hours 1. Park the machine on a solid level surface. Lower the bucket to the ground. Stop the engine. 2. Open the swing reduction upper cover. Check level gauge (1). 3.
Page 294: Travel Reduction Gear
MAINTENANCE Travel Reduction Gear Air Release Plug 1 CAUTION: Keep body and face away from air release (Oil Supply Plug) plug (1). Gear oil may be hot just after operation. Oil Level Check Wait for gear oil to cool and then gradually loosen air Plug 2 release plug (1) to release pressure.
Page 295 MAINTENANCE Change Gear Oil --- every 2000 hours 1. Park the machine on a firm, level surface. 2. Rotate the travel motor until the imaginary line through plug (1) and plug (3) are vertical. 3. Lower the bucket to the ground. 4.
Page 296: Hydraulic System
MAINTENANCE D. Hydraulic System Inspection and Maintenance of Hydraulic Equipment IMPORTANT: Never adjust parts of engine fuel system or hydraulic equipment. CAUTION: When checking and/or servicing the hydraulic components, pay special attention to the following points. 1. Be sure that the machine is parked on a level, firm surface before servicing hydraulic equipment.
Page 297 MAINTENANCE IMPORTANT:  When connecting hydraulic hoses and pipes, take special care to keep seal surfaces free from dirt and to avoid damaging them.  Wash hoses, pipes, and the tank interior with a washing liquid and thoroughly wipe off before reconnecting.
Page 298 MAINTENANCE Change Hydraulic Oil and Replace Full-Flow Filter Element Hydraulic breaker operation causes the hydraulic system to become contaminated faster and quickly deteriorates the hydraulic oil. Failure to adhere to proper maintenance intervals may result in damage to the base machine and the breaker. In order to extend service life, particularly that of the hydraulic pump, change the hydraulic oil and the full-flow filter element at the specified frequency given below.
Page 299 MAINTENANCE Changing intervals for the standard full-flow filter (paper filter) Breaker Operating 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % Availability Full-Flow Filter 1000 Hydraulic oil: 2000 hours 2000 1310 life time...
Page 300: Check Hydraulic Oil Level
MAINTENANCE Check Hydraulic Oil Level --- daily CAUTION: The hydraulic oil tank is pressurized. Push the pressure release button on the tank cap to release pressure, and carefully remove the cap. M104-07-021 IMPORTANT: Never run the engine without oil in hydraulic oil tank.
Page 301: Change Hydraulic Oil
MAINTENANCE Change Hydraulic Oil --- every 2000 hours or 5000 hours CAUTION:  Hydraulic oil may be hot just after operation. Wait for oil to cool before starting work.  The hydraulic oil tank is pressurized. Push pressure M104-07-117 release button (1) on the air breather before removing the air breather.
Page 302 MAINTENANCE 12. Remove drain plug (3). Allow oil to drain. 13. Clean, install and tighten drain plug (3). 14. Add oil until it is between the marks on the oil level gauge. 15. Install cover (2). Tighten the bolts to 50 N·m (5 kgf·m, 36.9 lbf·ft).
Page 303: Bleed Air From The Hydraulic System
MAINTENANCE Bleed Air from the Hydraulic System After changing hydraulic oil, bleed air from the hydraulic system by following the procedures below. IMPORTANT: If the hydraulic pump is not filled with oil, it will be damaged when the engine is started. Bleed air from the pump.
Page 304: Suction Filter Cleaning
MAINTENANCE Suction Filter Cleaning ---each time when hydraulic oil is changed The suction filter is located on the bottom of the hydraulic oil tank. Clean the suction filter when changing hydraulic oil. 1. After removing hydraulic oil from the hydraulic oil tank, remove cover (1) and rod assembly (2).
Page 305: Replace Full-Flow Filter
MAINTENANCE Replace Full-Flow Filter --- every 1000 hours CAUTION: Hydraulic oil becomes hot and pressurized during operation. Severe burns may result if skin comes in contact with escaping hydraulic oil just after operation. Wait for the oil to cool before starting any maintenance work.
Page 306: Replace Pilot Oil Filter
MAINTENANCE Replace Pilot Oil Filter --- every 1000 hours CAUTION: The hydraulic oil tank is pressurized. Push the pressure release button on the air breather before replacing pilot oil filter. M104-07-021 1. Park the machine on a firm, level surface. 2.
Page 307: Replace Air Breather Element
MAINTENANCE Replace Air Breather Element --- every 5000 hours CAUTION: Hydraulic oil becomes hot and pressurized during operation. Severe burns may result if skin comes in contact with escaping hydraulic oil just after operation. Wait for the oil to cool before starting any maintenance work.
Page 308: Check Hoses And Lines
MAINTENANCE Check Hoses and Lines ---daily --- every 250 hours WARNING:  Hydraulic oil and lubricant leaks can lead to fire that may result in serious injury. Check for missing or loose clamps, kinked hoses, lines or hoses that rub against each other, damaged oil cooler, and loose oil cooler flange bolts, for leaks.
Page 309 MAINTENANCE Interval Check Points Abnormalities Remedies (hours) Every 250 Hose covers Damage or leak (4) Replace hours Hose ends Damage or leak (5) Replace Hose covers Exposed reinforcement (6) Replace M115-07-146 M115-07-147 Hose covers Crack or blister (7) Replace Hose Bend (8), Collapse (9) Replace Hose ends and...
Page 310 MAINTENANCE Service Recommendations for Hydraulic Fittings Two hydraulic fitting designs are used on this machine.  Flat Face O-ring Seal Fitting (ORS Fitting) O-ring (1) is used on the sealing surfaces of adapter (2) to prevent oil leakage. Precautions for Use 1.
Page 311 MAINTENANCE  Metal Face Seal Fittings Tight contact between metal flares on adaptor (7) and metal connector (8) of hose (5) prevents pressure oil leakage. This type of fitting is used on smaller diameter joints. Precautions for Use Connect or disconnect fittings with care not to damage seat surfaces (9 and 10).
Page 312: Fuel System
MAINTENANCE E. Fuel System CAUTION: Beware of fire. Fuel is flammable. Keep fuel away from fire hazards. Recommended Fuel Use only super high quality or high quality DIESEL FUEL (JIS K-2204) (ASTM D-975) (EN-590). Kerosene must NOT be used. Using bad quality fuel, drainage agent, fuel additives, gasoline, kerosene or alcohol refueled or mixed with specified fuel may deteriorate performance of fuel filters and cause sliding problem at lubricated contacts in...
Page 313 MAINTENANCE Refueling 1. Park the machine on a level surface. Lower the bucket to the ground. Check the fuel level with fuel gauge (1). If the fuel level is low, stop the engine. Refuel by removing cap (2) on the fuel tank. 2.
Page 314: Drain Fuel Tank Sump
MAINTENANCE Drain Fuel Tank Sump --- daily 1. Park the machine on a level surface with the upperstructure rotated 90 ° for easier access. 2. Lower the bucket to the ground. 3. Turn the auto-idle switch off. M104-07-117 IMPORTANT: The turbocharger may be damaged if the engine is not properly shut down.
Page 315: Drain Fuel Pre-Filter
MAINTENANCE Drain Fuel Pre-Filter --- daily IMPORTANT: Drain fuel pre-filter daily before starting operation. The engine may be damaged if you do not drain fuel pre-filter daily. The fuel pre-filter has a water separator function. There is a float (8) inside the case which buoys when water accumulates. Check float (8) position daily.
Page 316 MAINTENANCE Bleed Air from the Fuel System Air in the fuel system may make the engine hard to start or make it run irregularly. After draining water and sediment from the fuel filter, replacing the fuel filter, cleaning the fuel solenoid pump strainer or running the fuel tank dry, be sure to bleed the air from the fuel system.
Page 317 MAINTENANCE If Air Mixed Downstream of Common Rail If air becomes mixed into the fuel system due to lack of fuel and the engine is difficult to start, release air by following the procedure below. 1. Following the above mentioned procedures, bleed enough air up to the engine supply pump entrance.
Page 318: Replace Fuel Main Filter Element
Main Filter IMPORTANT:  Be sure to use only genuine Hitachi elements for the fuel main filter element and the pre-filter element. Failure to do so may deteriorate the engine performance and/or shorten the engine service life.
Page 319 MAINTENANCE 2. Place 1 liter (1.1 US qt) or larger capacity container under the drain hose. 3. Rotate the bottom of filter element (2) counterclockwise by using a spanner to remove filter element (2) from head cover (3). 4. Apply a thin layer of fuel to the cartridge gasket (O-ring). 5.
Page 320: Replace Fuel Pre-Filter Element
Replace Fuel Pre-Filter Element --- every 1000 hours IMPORTANT:  Be sure to use only genuine Hitachi elements. Failure to do so may deteriorate the engine performance and/or shorten the engine service life. Please be noted that all engine failures caused by using other manufacturers' elements are excluded from Hitachi Warranty Policy.
Page 321 MAINTENANCE 2. Place 1 liter or larger capacity container under drain hose (3). 3. Loosen air bleed plug (1) and drain plug (2). Drain fuel until fuel does not flow out of the filter. After draining fuel, remove drain plug (2) and replace O-ring.
Page 322: Check Fuel Hoses
MAINTENANCE Check Fuel Hoses ---daily --- every 250 hours CAUTION: Fuel leaks can lead to fires that may result in serious injury.  Escaping combustible fluid can cause fires. Check for kinked hoses, hoses that rub against each other, and any fuel leaks.
Page 323: Air Cleaner
MAINTENANCE F. Air Cleaner Clean and Replace Air Cleaner Element (Outer) Clean --- every 250 hours or when the restriction indicator comes ON Replace --- after cleaning 6 times or after one year CAUTION: When using compressed air pressure (less than 0.69 MPa (7 kgf/cm )), dust may scatter.
Page 324 MAINTENANCE 3. At this time, do not remove the inner element. IMPORTANT: Do not hit or strike outer element (1) against another object to clean the element. 4. Allow compressed air pressure [less than 0.69 MPa (7 kgf/ )] to blow out of the inside of outer element (1) to clean the element.
Page 325: Replace Air Cleaner Element (Inner)
MAINTENANCE Replace Air Cleaner Element (Inner) Replace --- When outer element is replaced Air Cleaner Restriction Alarm Switch IMPORTANT: Do not clean and reuse the inner element. 1. After removing outer element (1), clean inside the air Cover cleaner body (2) with a clean cloth before removing inner element (3).
Page 326: Cooling System
Hitachi Long-Life Coolant (LLC) mixed by 30 to 50 %. If a coolant mixed with less than 30 % of Hitachi Long-Life Coolant is used, service life of the cooling parts may be shortened due to damage by freezing or corrosion of coolant system parts.
Page 327: Check Coolant Level
MAINTENANCE Check Coolant Level --- daily 1. Confirm that pilot control shut-off lever (1) is in the LOCK position. 2. Confirm that all control levers are placed in neutral. 3. Insert key switch (2). Turn it to ON position. Press and hold switch (3) with the engine stopped.
Page 328 MAINTENANCE --- Visual Inspection The coolant level must be between the FULL (3) and LOW (4) marks on expansion tank (2). If the coolant level is below the LOW (4) mark, remove cap (1) from expansion tank (2) and refill coolant. CAUTION: Do not remove cap (1) until the coolant temperature in the radiator becomes cool.
Page 329: Check And Adjust Fan Belt Tension
MAINTENANCE Check and Adjust Fan Belt Tension 5 to 6 mm --- every 250 hours (first time after 50 hours) Fan Pulley 98 N (10 kgf) IMPORTANT: Loose fan belt may result in insufficient battery charging, engine overheating, as well as premature belt wear.
Page 330: Change Coolant
MAINTENANCE Change Coolant --- twice a year (in spring and autumn) NOTE: When genuine Hitachi Long-Life Coolant is used, change interval is once every two years (in autumn every other year) or every 4000 hours whichever comes first. CAUTION: Do not loosen the cap on the expansion tank when coolant temperature in the radiator is high.
Page 331 MAINTENANCE 5. Close the radiator drain cock (1). Fill the radiator with tap water and LLC at the specified mixing ratio. When adding coolant, do so slowly to avoid mixing air bubbles in the system. Fill coolant in the expansion tank until its level reaches the upper limit line.
Page 332: Clean Radiator/Oil Cooler/Inter Cooler Core
MAINTENANCE Clean Radiator/Oil Cooler/Inter Cooler Core Outside --- every 500 hours Air Conditioner Fuel Cooler Condenser Inter Cooler Inside --- once a year CAUTION: Use reduced compressed air pressure (Less than 0.2 MPa, 2 kgf/cm ) for cleaning purposes. Wear personal protection equipment including eye protection.
Page 333 MAINTENANCE WARNING:  Entanglement in moving parts can cause serious injury.  Before servicing, stop the engine and the fan to prevent any accident.  Never attempt to start the engine when the cover is open.  In case tools or parts are dropped into the radiator/ oil cooler/inter cooler core, remove them before starting the engine.
Page 334: Clean Oil Cooler, Radiator And Inter Cooler Front Screen
MAINTENANCE Clean Oil Cooler, Radiator and Inter Cooler Front Screen --- every 500 hours IMPORTANT: Check the screen daily and clean it if necessary when the machine is operated in dusty areas. Pull the clip lever on the screen to remove the screen. Insert the clip into the cover hole and turn over the clip lever to hold the screen.
Page 335: Electrical System
MAINTENANCE H. Electrical System WARNING:  Improper radio communication equipment and associated parts, and/or improper installation of radio communication equipment affects the machine's electronic parts, causing involuntary movement of the machine.  Improper installation of electrical equipment may cause machine failure and/or a fire on the machine. ...
Page 336: Battery
MAINTENANCE Battery WARNING:  Battery gas can explode. Keep sparks and flames away from batteries.  Do not leave cover (1) removed. Do not keep tools, metals or flammable materials around the battery or inside the battery room. If a metal tool is placed across the battery terminal and a vehicle component such as the engine block, sparks may be created, SA-032...
Page 337 MAINTENANCE Precautions for Handling Batteries  If electrolyte spills on your skin and/or clothes, immediately flush the skin and/or clothes with water and then wash further with soap. If splashed in eyes, flush with water for approximately 15 minutes and seek immediate medical attention. ...
Page 338 MAINTENANCE Electrolyte Level Check --- monthly Check the electrolyte level at least once a month. 1. Park the machine on level ground and stop the engine. 2. Check the electrolyte level. 2.1 When checking the level from the battery side: Clean around the level check lines with a wet towel.
Page 339: Replace Battery
MAINTENANCE 3. Always keep the area around the battery terminals clean to prevent battery discharge. Check terminals for loose and/or rust. Check terminals for loose and/or rust. Coat terminals with grease or petroleum jelly to prevent corrosion build Replace Battery IMPORTANT: Turn the battery disconnect switch to OFF M409-07-072 before replacing the battery.
Page 340: Check Electrolyte Specific Gravity
MAINTENANCE Check Electrolyte Specific Gravity --- every one month If you spill acid on yourself: 1. Flush your skin with water. WARNING: Battery gas can explode. Keep sparks and flames away from batteries. Use a flashlight to check 2. Apply baking soda or lime to help neutralize the battery electrolyte level.
Page 341: Replacing Fuses
MAINTENANCE Replacing Fuses --- as necessary If any electrical equipment fails to operate, first check the fuses. Fuse box is located behind the operator's seat. NOTE:  One spare fuse for each respective fuse capacity is provided in the fuse box. ...
Page 342: Fuse Box
MAINTENANCE Fuse Box 10- CONTROLLER 20- OPT.3 (ALT) Spare Fuses 9- BACKUP 19- HORN 10 A 10 A 8- ECU 18- IDLE STOP 30 A 7- START 17- POWER ON 6- OPT.2 (ALT) 16- GLOW RELAY 20 A 5- OPT.1 (ALT) 15- AUX 10 A 4- SOLENOID...
Page 343 MAINTENANCE  Fusible Link (Main Fuse) In case the starter will not rotate even if the key switch is turned to the START position, fusible link may be the cause of the trouble. Remove the cover next to the battery to check the fusible link.
Page 344: Miscellaneous
MAINTENANCE I. Miscellaneous Check and Replace Bucket Teeth --- daily Check bucket teeth (1) for wear and looseness. Replace teeth (1) if tooth wear exceeds the designated service limit shown below. A mm (in) Model Limit of Use ZX345USLC-6N 230 (9.1'') 110 (4.3'') M104-07-056 Replace...
Page 345 MAINTENANCE 3. Clean shank (6) surface. 4. Install lock rubber (4) into shank (6) hole as shown. RIGHT WRONG M104-07-060 5. Position new tooth (1) over shank (6). RIGHT WRONG M104-07-061 6. Drive lock pin (5) fully into the hole as shown. RIGHT WRONG M104-07-062...
Page 346: Change Bucket
MAINTENANCE Change Bucket CAUTION: When driving the connecting pins in or out, guard against injury from flying pieces of metal or debris. Wear goggles or safety glasses, hard hat and face shield. Before starting the conversion work, keep bystanders clear of the machine.
Page 347: Convert Bucket Connection Into Face Shovel
MAINTENANCE Convert Bucket Connection Into Face Shovel O-Ring Shift CAUTION: When driving the connecting pins in or out, guard against injury from flying pieces of metal or debris. Wear goggles or safety glasses, hard hat and face shield. Converting the bucket connection allows you to use the Bucket Boss machine as a face shovel.
Page 348: Adjust Bucket Linkage
MAINTENANCE Adjust Bucket Linkage --- as required The machine is provided with a bucket adjustment system to take up play in the linkage. When play in the linkage increases, remove and install shims (2) as follows: Clearance Adjust Part 1. Place the bucket in a stable position. 2.
Page 349: Remove Travel Levers
MAINTENANCE Remove Travel Levers --- as required Travel levers (3) and (4) may be removed if desired. Procedure: Remove bolts (1) and (2) to remove travel levers (3) and (4) from brackets. NOTE: Wrench size: 17 mm Tightening Torque: 50 N·m (5 kgf·m, 36.9 lbf·ft) M178-07-077 Check and Replace Seat Belt Check --- daily...
Page 350: Check Windshield Washer Fluid Level
MAINTENANCE Check Windshield Washer Fluid Level --- as required Check fluid in windshield washer tank (1). If the fluid level is low, remove cap (2) and add fluid via the opening. MDD5-07-021 7-88...
Page 351: Check Track Sag
MAINTENANCE Check Track Sag --- every 50 hours Swing the upperstructure 90 ° and lower the bucket to raise the track off the ground as shown. Measure distance (A) at the middle of the track frame from the bottom of the track frame to the back face of the track shoe.
Page 352 MAINTENANCE ZX245USLC-6N CAUTION:  The pressure inside the cylinder of the track adjuster is high. Do not loosen valve (1) quickly or loosen it too much as valve (1) may fly out or high-pressure grease in the adjusting cylinder may spout out. Slowly loosen valve (1) while keeping body parts and face away from valve (1).
Page 353 MAINTENANCE Tighten the Track CAUTION: It is abnormal if the track can not be adjusted. The strong force acts on the spring in track adjuster. Therefore, the grease in cylinder is highly pressurized. In such cases, NEVER ATTEMPT TO DISASSEMBLE the track or track adjuster, because of dangerous high-pressure grease inside the track adjuster.
Page 354: Clean And Replace Air Conditioner Filter
MAINTENANCE Clean and Replace Air Conditioner Filter Clean Circulating/Fresh Air Filters Circulating Air Filter --- every 500 hours Fresh Air Filter --- every 500 hours Replace Circulating/Fresh Air Filters Circulating Air Filter --- After cleaning 6 times or so Fresh Air Filter --- After cleaning 6 times or so Removing Fresh Air Filter 1.
Page 355 MAINTENANCE WARNING: When using compressed air pressure, wear safety glasses or goggles. Cleaning Clean the circulating and fresh air filters. Clean both the circulating and fresh air filters by blowing compressed air or washing with water. Washing procedure with water is as follows: 1.
Page 356: Check Air Conditioner
MAINTENANCE Check Air Conditioner --- every 250 hours Oil Seepage Check pipe connections for refrigerant gas leakage If oil seepage is found around pipe connections, it indicates possible gas leakage. Detail Check Refrigerant M1CD-07-038 Start the engine and run it at approximately 1500 min −1 (rpm).
Page 357 MAINTENANCE Inspect belt, check and adjust tension Alternator Pulley Fan Pulley --- every 250 hours Visually check the compressor and fan belts for wear. Check fan belt tension by depressing the midpoint of the 17 to 21 mm belt with the thumb. Deflection must be shown in the right 98 N (10 kgf) figure with a depressing force of approximately 98 N (10 kgf ).
Page 358: Clean Cab Floor
MAINTENANCE Adjust Compressor Belt Tension 1. Loosen lock nut (2) of tension pulley (1). 2. Move tension pulley (1) by adjusting bolt (3) under tension pulley (1) until tension is correct. 3. Securely tighten bolt (2) of tension pulley (1). 4.
Page 359: Retighten Cylinder Head Bolt
MAINTENANCE Retighten Cylinder Head Bolt --- as required See your authorized dealer. Inspect and Adjust Valve Clearance --- every 1000 hours See your authorized dealer. Measure Engine Compression Pressure --- every 1000 hours See your authorized dealer. Check Starter and Alternator --- every 1000 hours See your authorized dealer.
Page 360: Check And Clean Injector
MAINTENANCE Check and Clean Injector --- as required See your authorized dealer. Check Gas Damper --- as required CAUTION: The gas damper has been charged with high-pressure nitrogen gas. Inappropriate handling may cause explosion, possibly resulting in serious injury or death. Gas dumpers are used in the overhead window of the cab.
Page 361 MAINTENANCE Torque Wrench Descriptions Bolt Dia Quantity size N·m (kgf·m) (lbf·ft) Engine cushion rubber mounting bolt and nut (55) (410) Engine bracket mounting bolt (Pump side) (11) (81) Engine bracket mounting bolt (Fan side) (6.5) (48) Hydraulic oil tank mounting bolt (27) (200) Fuel tank mounting bolt...
Page 362 MAINTENANCE Tightening Torque Chart Hexagon Wrench Socket Bolt Bolt Wrench Wrench Dia. Socket Bolt size size N·m (kgf·m) (lbf·ft) N·m (kgf·m) (lbf·ft) N·m (kgf·m) (lbf·ft) N·m (kgf·m) (lbf·ft) 3.3 to 4.2 (0.3 to 0.4) (2.4 to 3.1) (3.0) (22) (2.0) (15) (1.0) (7.4)
Page 363 MAINTENANCE 1. Engine cushion rubber mounting bolts and nuts Pump Side M1U1-07-040 Fan Side M1U1-07-034 2. Engine bracket mounting bolts Pump Side M1U1-07-040 Fan Side M1U1-07-034 7-101...
Page 364 MAINTENANCE 3. Hydraulic oil tank mounting bolts MDD5-07-022 4. Fuel tank mounting bolts MDD5-07-022 7-102...
Page 365 MAINTENANCE 5. Radiator mounting bolts MDD5-07-023 MDD5-07-024 7-103...
Page 366 MAINTENANCE 6. Pump mounting bolts MDAA-07-110 7. Control valve mounting bolts MDD5-07-025 Control valve bracket mounting bolts MDD5-07-025 7-104...
Page 367 MAINTENANCE 8. Swing device mounting bolts MDD5-07-026 9. Swing motor mounting bolts MDD5-07-026 10. ORS fittings for hydraulic hoses and piping M104-07-079 7-105...
Page 368 MAINTENANCE 11. Hycolin tube mounting nuts MDD5-07-027 12. Battery mounting nuts MDD5-07-028 7-106...
Page 369 MAINTENANCE 13. Cab mounting nuts M1U1-07-026 Cab mounting anchor bolt M1U1-07-054 Cab cushion rubber mounting bolt MDC1-07-052 14. Cover mounting bolts MDD5-07-011 7-107...
Page 370 MAINTENANCE 15. Constant torque clamp of low pressure piping MDD5-07-029 Flexible master coupling of low pressure piping MDD5-07-030 T-bolt clamp of low pressure piping MDD5-07-030 7-108...
Page 371 MAINTENANCE 16. Swing bearing mounting bolts Upperstructure Side M107-07-088 M107-07-089 Undercarriage Side ZX245USLC-6N 7-109...
Page 372 MAINTENANCE 17. Travel device mounting bolts MDD5-07-052 Travel reduction gear cover mounting bolts MDD5-07-031 Sprocket mounting bolts M154-07-050 18. Upper roller mounting bolts M157-07-224 7-110...
Page 373 MAINTENANCE 19. Lower roller mounting bolts M107-07-092 20. Track shoe mounting bolts M107-07-093 7-111...
Page 374 MAINTENANCE 21. Track guard mounting bolts MDAA-07-058 7-112...
Page 375 MAINTENANCE 22. Aftertreatment device mounting bolts MDC1-07-049 23. DEF/AdBlue® tank bracket mounting bolts MDD5-07-032 7-113...
Page 376 MAINTENANCE 24. Platform handrail mounting bolt MDD5-07-033 25. Body top handrail mounting bolt MDD5-07-034 7-114...
Page 377 MAINTENANCE 26. Cab top handrail mounting bolt MDC1-07-077 7-115...
Page 378 MAINTENANCE 28. Front pin-retaining bolt MDCS-07-004 MDD5-07-035 Boom top, Arm cylinder bottom and rod pin-retaining bolt (There are three bolts on the boom top.) MDCA-07-001 7-116...
Page 379: Aftertreatment Device
MAINTENANCE J. Aftertreatment Device Aftertreatment Device Check and Clean Aftertreatment Device --- as required IMPORTANT:  Check and clean flammable materials on the area around the Aftertreatment device.  Condensation for dew may blow out from exhaust outlet (1) of the afterfreatment device and black deposition may be observed;...
Page 380: Urea Scr System
MAINTENANCE K. Urea SCR System WARNING: Fill specified DEF/AdBlue® into the DEF/ AdBlue® tank. If improper DEF/AdBlue® is refilled, fire or system failure may result. If improper liquid is refilled in the DEF/AdBlue® tank, consult your authorized dealer for check or repair. Specified DEF/AdBlue®...
Page 381 MAINTENANCE CAUTION:  DEF/AdBlue® is colorless and harmless solution. It is harmless when contacting with the body, however, it may cause skin to become inflamed depending on the constitution of the individual. Flush DEF/AdBlue® with clean water when it contacts on the skin. ...
Page 382: Check Def/Adblue
MAINTENANCE Check DEF/AdBlue® ---daily Park the machine on a level surface. Lower the bucket to the ground. Check the DEF/AdBlue® level with DEF/AdBlue® gauge (1). If necessary, stop the engine and add DEF/AdBlue®. Refill DEF/AdBlue® CAUTION:  Refill DEF/AdBlue® which meets Japanese Industrial Standards (JIS K2247), International Organization for MDC1-01-001 Standardization (ISO 22241) or Deutsche Industrie...
Page 383 MAINTENANCE 4. Remove cap (4) from DEF/AdBlue® tank (2) and refill DEF/ AdBlue®. Be sure to stop refilling before the “F” line by checking the level gauge (5) float. IMPORTANT:  Make sure the containers and equipment used for refilling and free of contaminants, such as sand, mud and dirt.
Page 384: Clean Filler Port Strainer
MAINTENANCE Clean Filler Port Strainer Strainer (1) is provided on the filler port of the DEF/AdBlue® tank. Clean strainer (1) if dirt or dust is observed. CAUTION: Wear safety equipment such as safety glasses or goggles, rubber gloves appropriate to the job.
Page 385: Change Def/Adblue
MAINTENANCE Change DEF/AdBlue® CAUTION: Wear safety equipment such as safety glasses or goggles, rubber gloves appropriate to the job. Wash DEF/AdBlue® with clean water when it contacts with the skin. If DEF/AdBlue® is accidentally splashed into eyes, flush with water for 15 minutes or longer and get emergency medical attention.
Page 386: Replace Def/Adblue® Supply Module Main Filter
MAINTENANCE Replace DEF/AdBlue® Supply Module Main Filter --- every 4500 hours A filter (4) is mounted in the DEF/AdBlue® pump. Periodically replace filter (4). CAUTION: Wear safety equipment such as safety glasses or goggles, rubber gloves appropriate to the job. Wash DEF/AdBlue® with clean water when it contacts with the skin.
Page 387 MAINTENANCE NOTE: The DEF/AdBlue® pump is located bottom of the machine, near the engine. 2. Remove bolts (1) and cover (2). 3. Remove cap (3) from the DEF/AdBlue® pump by using a 27 mm bihexagon wrench. 4. Pull out filter (4) inside the pump. As it is tightly mounted, it can not be pulled by hands.
Page 388: Replace Def/Adblue® Tank Water Supply Inlet Filter
MAINTENANCE Replace DEF/AdBlue® Tank Water Supply Inlet Filter --- every 4500 hours or if DEF/AdBlue® overflows when supplying water IMPORTANT: Replace the filter without cleaning. Reusing after cleaning may cause a malfunction. The filter inside the water supply inlet of the DEF/AdBlue® tank must be replaced periodically.
Page 389: Maintenance Under Special Environmental Conditions
Reinforce the bucket before using it, or use a heavy duty bucket. Falling Stones Cab Head Guard : Provide a cab guard to protect the machine from falling stones. Consult your nearest Hitachi dealer. Freezing Weather Fuel/Lubricant : Use high quality and low viscosity fuel and oil.
Page 390: Maintenance Under Special Environmental Conditions
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS MEMO ..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 391: Storage
STORAGE Storing the Machine In case the machine is to be stored for longer than one month, pay attention to the following points to in preparation for the next operation. Precautions for Long-Term Storage Item Remedy Machine Cleaning Wash the machine. Remove soil or other debris adhered to the machine. Lubrication/Greasing Check level of lubricant and contamination.
Page 392 STORAGE MEMO ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................10-2...
Page 393: Troubleshooting
TROUBLESHOOTING Troubleshooting If any machine trouble has occurred, immediately repair it. Make certain the cause of the trouble and take necessary measures to prevent the reoccurrence of the same trouble. In case troubleshooting is difficult, or measures marked with * must be taken, consult your authorized dealer. Never attempt to adjust, disassemble, or repair the hydraulic and/or electrical/electronic parts/components.
Page 394 TROUBLESHOOTING Impossible to Start the Engine Problem Cause Solution Starter does not rotate or is not Discharged battery Charge or replace battery. powerful. Disconnected, loose, or corroded battery After repairing the corroded terminals area, securely tighten the connectors. Lowered pilot control shut-off lever. Pull pilot control shut-off lever Disconnected, loose, or corroded starter After repairing the corroded...
Page 395 TROUBLESHOOTING Control Lever Problem Cause Solution Lever is heavy to operate. Rusted joint * Lubricate or repair Worn pusher * Replace Does not move smoothly. Worn pusher * Repair or replace Faulty pilot valve * Replace Does Not Return to Neutral. Faulty pilot valve * Replace The lever is tilted in the neutral position...
Page 396 TROUBLESHOOTING Hydraulic System When the machine is stored without operation, air mixed in hydraulic oil will become separated and will accumulate in the cylinder upper sections, causing a delay in the response time of the machine movement or weak power development.
Page 397 TROUBLESHOOTING Problem Cause Solution Only one actuator is inoperable. Broken control valve spool * Replace Embedded foreign matter in valve spool * Repair or replace Broken pipe and/or hose * Repair or replace Loose pipe line joint Retighten Broken O-ring at pipe line joint * Replace Broken actuator * Repair or replace...
Page 398 TROUBLESHOOTING Drive Function Problem Cause Solution One or both side tracks are inoperable. Damaged center joint * Repair or replace Incompletely released parking brake * Repair or replace Broken travel motor * Repair or replace Faulty pilot valve * Replace Faulty pilot circuit line * Repair or replace Does not travel smoothly.
Page 399 TROUBLESHOOTING Swing Function Problem Cause Solution Upperstructure does not swing. Faulty swing parking brake * Repair or replace Faulty swing parking brake release valve * Repair or replace Broken swing motor * Repair or replace Faulty pilot valve * Replace Faulty pilot circuit line * Repair or replace Swing is not smooth.
Page 400 TROUBLESHOOTING Engine Speed Problem Cause Solution Even if operating the engine control Blown fuse Replace dial, the engine speed does not Faulty engine control dial * Replace change. Poor contact in connector * Repair or replace Damaged wire harness (between EC dial and * Repair MC, or MC and ECM) Faulty controller (MC, ECM)
Page 401: Specifications
SPECIFICATIONS Specifications ZX345USLC-6N MDD5-12-001 Model ZX345USLC-6N Type of Front-End Attachment 3.11 m (10 ft 2 in) Arm Bucket Capacity (Heaped) PCSA 1.25 m (1.64 yd ), CECE 1.10 m Operating Weight 34800 kg (76800 lb) Base Machine Weight 28800 kg (63500 lb) Engine Isuzu AQ-6HK1XASA-02S 186kW/1900 min (253 PS/1900 rpm)
Page 402: Working Ranges
SPECIFICATIONS Working Ranges ZX345USLC-6N Backhoe MDD5-12-002 3.11 m (10 ft 2 in) Arm 3.76 m (12 ft 4 in) Arm Category Backhoe Backhoe Item ft·in ft·in 10900 35’ 9” 11460 37’ 7” A : Maximum Digging Reach *6920 *22’ 8” *7570 *24’...
Page 403: Shoe Types And Applications
SPECIFICATIONS Shoe Types and Applications ZX345USLC-6N 600 mm (24”) 700 mm (28”) 800 mm (31”) Shoe Width Grouser Shoe Grouser Shoe Grouser Shoe For Ordinary Ground For Weak Footing For Weak Footing Application (Standard) (Option) (Option) 34800 35200 35600 Operating Weight (lb) (76800) (77700)
Page 404: Bucket Types And Applications
SPECIFICATIONS Bucket Types and Applications ZX345USLC-6N Bucket Capacity Front-End Attachment Bucket Width mm (in) Bucket Application PCSA CECE (With side cutter) 3.11 m (10' 2”) 3.76 m (12' 4”) (Heaped) (Heaped) 1.00 (1.31) 0.90 1260 (49.6”)   1.25 (1.64) 1.10 1490 (59.0”) ...
Page 405: Optional Attachments And Devices
OPTIONAL ATTACHMENTS AND DEVICES OPTIONAL ATTACHMENTS AND DEVICES CONTROL LEVER Control Lever (H Type) (Optional) WARNING:  Never place any part of the body beyond the window frame. It could be crushed by the boom if the boom control lever is accidentally bumped or otherwise engaged.
Page 406: Control Lever (2 Way Multi Valve) (Optional)
OPTIONAL ATTACHMENTS AND DEVICES CONTROL LEVER CONTROL LEVER (2 Way Multi Valve) (Optional) The control lever operation pattern is selected to either Backhoe pattern or Excavator pattern by shifting selector valve (1). MDAA-01-343 13-2...
Page 407 OPTIONAL ATTACHMENTS AND DEVICES CONTROL LEVER WARNING: To prevent a serious accident or personal injury and/or death from occurring due to erratic machine movement, follow the instructions below.  Appoint a coordinator responsible to selection of the multi control lever operation pattern. ...
Page 408: Attachment Pedal (Hydraulic Breaker) (Optional)
OPTIONAL ATTACHMENTS AND DEVICES ATTACHMENT PEDAL Attachment Pedal (Hydraulic Breaker) (Optional) The breaker can be operated using attachment pedal (1) located on the right front of the seat, as illustrated. CAUTION: Be sure to lock attachment pedal (1) with pedal lock (2) when attachment pedal (1) is not in use.
Page 409: Attachment Pedal (Hydraulic Crusher) (Optional)
OPTIONAL ATTACHMENTS AND DEVICES ATTACHMENT PEDAL Attachment Pedal (Hydraulic Crusher) (Optional) The crusher can be operated using attachment pedal (1) located on the right front of the seat, as illustrated. CAUTION: Be sure to lock attachment pedal (1) with pedal lock (2) when attachment pedal (1) is not in use.
Page 410: Hydraulic Breaker, Hydraulic Crusher And Quick Coupler
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Hydraulic Breaker, Hydraulic Crusher and Quick Coupler Selecting a Breaker, Crusher or Quick Coupler Select a breaker, crusher or quick coupler with the correct size and weight for your machine, considering the stability of the machine, hydraulic oil pressure and flow rate of the breaker, crusher or quick coupler.
Page 411: Piping For Breaker And Crusher
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Piping for Breaker and Crusher Operational Procedures for Stop Valves and Selector Valve. Close Open Stop Valve A Close: When attachment is detached or rot in use. M1U1-05-007 Open: When using attachment MAIN BODY BOOM ATTACHMENT...
Page 412: Secondary Relief Pressure Adjustment
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Secondary Relief Pressure Adjustment Depending on the breaker model, the secondary relief valve relief set pressure differs. Consult your nearest Hitachi dealer for installing a breaker. 13-8...
Page 413: Precautions For Breaker Operation
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Precautions for Breaker Operation WARNING: Machine stability is reduced as the breaker is much heavier than the bucket. When using a breaker, the machine is more likely to tip over. Also, flying objects may hit the cab or other parts of the machine.
Page 414 Hose jumping including pumps. abnormally Contact your nearest Hitachi dealer. M104-05-058 Do Not Operate the Breaker in Water Do not operate the Doing so will cause rust and seal damage, resulting in breaker in water.
Page 415 OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Operate the Hydraulic Excavator Carefully to Avoid Hitting the Boom When the arm rolled in with the breaker equipped, the chisel may come in contact with the boom. Watch Out! Take care not to hit the boom with the crusher...
Page 416 OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Raising the Front Part of the Undercarriage by Pressing Down the Breaker May Cause Damage to the Front Attachment Never raise the front edge of the undercarriage higher than 150 mm (6 in) by pressing the breaker down.
Page 417: Change Hydraulic Oil And Replace Full-Flow Filter Element
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Change Hydraulic Oil and Replace Full-Flow Filter Element Hydraulic breaker operation results in faster contamination of the hydraulic system, and faster deterioration of hydraulic oil. Failure to comply with proper maintenance intervals may result in damage to the base machine and the breaker.
Page 418: Precautions For Crusher Operation
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Precautions for Crusher Operation Prevent machine tipping over and damage to the front attachment. Observe the following precautions for crusher operation. WARNING: Machine stability is reduced as the crusher is much heavier than bucket.
Page 419 OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER  When the arm is rolled in with the crusher equipped, the crusher may come into contact with the boom. Watch Out! Take care not to hit the boom with the crusher ...
Page 420 OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER  Always operate the crusher on a stable, level surface, not on a slope or on crushed debris.  Do not use the crusher to haul or load crushed debris. ...
Page 421: Attachment
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Attachment Allowable Weight Limits of Installed Attachment WARNING:  Before installing attachments such as hydraulic  According to the specifications of installed breaker, crusher (concrete crusher), or pulverizer, attachment and the base machine, the take machine controllability into account when machine weight may exceed the allowable maximum operating weight of the ROPS,...
Page 422 OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER  Breaker operation speed is faster than crusher operation, so that recommended maximum weight for breaker are lower than those for crushers.  Weight is not the only factor to be considered when selecting a breaker.
Page 423: Attachment Connection Parts
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Attachment Connection Parts The attachment hydraulic line and connection parts are located as illustrated below. When the attachment is disconnected, be sure to install caps or plugs to the ends of both the arm and attachment side hydraulic lines to prevent dust from entering or from sticking.
Page 424 OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Part No. List (Fill attachment manufacturer's part Nos. in the blank spaces.) Adapter Size Adapter Plug Hose PF-UNF Form / Size 37 ° Male-Type 37 ° 37 ° ZX345USLC-6N left side PF1X1-5/16UN 4214444 4222712...
Page 425: Precautions For Arm Roll-In/Bucket Roll-In Combined Operation
OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER Precautions for Arm Roll-In/Bucket Roll-In Combined Operation When Installing an Attachment Longer Than Standard Bucket WARNING: If an attachment (such as a hydraulic breaker, crusher or quick coupler) is installed that has a longer overall length than that of the bucket, Watch Out! Take care not to hit the...
Page 426 OPTIONAL ATTACHMENTS AND DEVICES HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER MEMO ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 427: Index
INDEX Basic Screen ..................1-9 Battery ....................7-74 About Aftertreatment Device .............1-3 Battery Disconnect Switch ............1-139 Actual operation ................1-83 Before Starting Engine ..............3-2 Adjust Bucket Linkage ..............7-86 Beware of Asbestos and Silica Dust and Other Adjust the Operator’s Seat ............S-6 Contamination .................
Page 428 INDEX Clean Radiator/Oil Cooler/Inter Cooler Core ...... 7-70 Features: ..................1-107 Clock....................1-13 Flow Rate Adjustment ..............1-43 Confirm Direction of Machine to Be Driven ......S-13 Follow Safety Instructions ............S-2 Console and Seat Fore-aft Adjustment ......1-132 For Rapid Cooling ...............1-114 Console Height Adjustment ...........1-131 Front Joint Pins ................
Page 429 INDEX MAINTENANCE .................7-1 Pilot Control Shut-Off Lever .......... 1-105, 5-2 MAINTENANCE UNDER SPECIAL ENVIRONMENTAL Piping for Breaker and Crusher ..........13-7 CONDITIONS ................9-1 Power Boost Switch ............1-101, 5-15 Main Menu ..................1-28 Power Mode ................... 5-16 Main Menu Sequence Change ..........1-72 Power Mode Switch ..............
Page 430 INDEX Replace Rubber Hoses Periodically ........S-29 Transport Safely ................S-24 Replacing Fuses ................7-79 Transporting by Road ..............6-1 Restriction of Attachment Installation ......... S-12 Travel Alarm Deactivation Switch (Optional) ..... 1-99 Retighten Cylinder Head Bolt ..........7-97 Travel Levers and Pedals ...............4-1 Return to Basic Screen Switch (Monitor) ......

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