Page 2 INTRODUCTION Read this manual carefully to learn how to operate Warranty is provided as a part of Hitachi's support and service your machine correctly. Failure to do so program for customers who operate and maintain their could result in personal injury or equipment damage.
Page 3 CALIFORNIA Proposition 65 Warning Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.
Page 4 MACHINE NUMBERS SAFETY SAFETY SIGNS COMPONENTS NAME OPERATOR’S STATION BREAK-IN OPERATING THE ENGINE DRIVING THE MACHINE OPERATING THE MACHINE TRANSPORTING MAINTENANCE CONSUMABLE PARTS LIST MAINTENENCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS STORAGE TROUBLESHOOTING SPECIFICATIONS REFERENCE INDEX...
Page 5: Table Of Contents
CONTENTS MACHINE NUMBERS Beware of Asbestos Dust........S-28 Precautions for Welding and Grinding ....S-29 SAFETY Avoid Heating Near Pressurized Fluid Lines ..S-29 Recognize Safety Information ......S-1 Avoid Applying Heat to Lines Understand Signal Words........S-1 Containing Flammable Fluids .....S-29 Follow Safety Instructions........S-2 Remove Paint before Welding or Heating..S-30 Prepare for Emergencies........
Page 6 Control Lever (ISO Excavator Pattern)....5-1 A. Greasing............7-11 Control Lever Front Joint Pins ........... 7-11 (H-Pattern: HITACHI Excavator Pattern)..5-2 Bucket and Link Pins........7-14 Control Lever (SAE-Backhoe Pattern) Blade Pins ........... 7-14 --- If Equipped (2 Way Multi Valve) ....5-3 Precautions for Front Attachment and Boom-Swing Pedal ..........5-4...
Page 7 CONTENTS Replacing Fuses..........7-50 Miscellaneous ..........7-51 Check Bucket Teeth for Looseness and/or Wear...........7-51 Replace Bucket ...........7-53 Adjust Track Sag (Rubber Crawler) and Check for Damage ......7-54 Replace Rubber Crawler ......7-56 Check Track Sag (Steel Crawler) (Optional)......7-58 Check and Replace Seat Belt .....7-61 Check Air conditioner (Machine with Cab) .......7-62 Clean and Replace Air Conditioner...
Page 8 CONTENTS MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 9: Machine Numbers
MACHINE NUMBERS The manufacturing Nos. explained in this group is the individual number (serial No.) given to each machine and hydraulic 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 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 11: Recognize Safety Information
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 in- jury. • Follow recommended precautions and safe operating practices.
Page 12: Follow Safety Instructions
SAFETY FOLLOW SAFETY INSTRUCTIONS • Carefully read and follow all safety signs on the machine as well as all safety messages in this manual. • Safety signs must be installed, maintained and replaced if damaged. • If a safety sign or this manual is damaged or missing, order a replacement from your authorized dealer in the same way you order other replacement parts (be sure to state machine model and serial number when or-...
Page 13: Wear Protective Clothing
SAFETY WEAR PROTECTIVE CLOTHING • Wear close fitting clothing and safety equipment appro- priate to the job. You may need: A hard hat Safety belt Safety shoes Safety glasses, goggles, or face shield Heavy gloves Hearing protection Reflective clothing Wet weather gear SA-438 Respirator or filter mask.
Page 14: Tidy Up Inside Operator's Space
SAFETY TIDY UP INSIDE OPERATOR’S SPACE • Always keep inside the cab clean by observing instruc- tions below, to prevent any personal accidents from oc- curring. • Remove mud and/or oily material from the shoe soles before entering the operator’s space. If pedals are oper- ated without removing mud or oily matter, the foot may slip off the pedal, possibly creating a hazardous situa- tion.
Page 15: Adjust The Operator's Seat
SAFETY ADJUST THE OPERATOR'S SEAT • A poorly adjusted seat for either the operator or for the work at hand may quickly fatigue the operator leading to mis-operation of the machine. • The seat should be adjusted whenever the operator for the machine changes.
Page 16: Move And Operate Machine Safely
SAFETY MOVE AND OPERATE MACHINE SAFELY • Always be aware that there is a potential danger around the machine while operating the machine. • Take extra care not to run over bystanders. Confirm the location of bystanders before moving, swinging, or operating the machine.
Page 17: Operate Only From Operator's Seat
SAFETY OPERATE ONLY FROM OPERATOR'S SEAT • Inappropriate engine starting procedures may cause the machine to runaway, possibly resulting in serious injury or death. • Start the engine only when seated in the operator's seat. • NEVER start the engine while standing on the tracks or on ground.
Page 18: Precautions For Operations
SAFETY PRECAUTIONS FOR OPERATIONS • Thoroughly make certain safety at the work site before starting operations. Especially always observe the fol- lowing points. • Be sure to wear close fitting clothing and required safety items, such as a hard hat, when operating the machine.
Page 19: 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 due to collapse of the ground, 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 20: Protect Against Falling Stones And Debris
SAFETY PROTECT AGAINST FALLING STONES AND DEBRIS • Confirm that your machine is FOPS cab equipped before working in areas where the possibility of falling stones or debris exist. PROVIDE SIGNALS FOR JOBS INVOLVING MULTIPLE NUMBERS OF MACHINES • In case more than one machine is operated in the same job site, accidental collision between machines may cause serious injury or death.
Page 21: Drive Machine Safely
SAFETY DRIVE MACHINE SAFELY • Use a signal person when traveling the machine along road shoulders or in congested areas. • Driving the machine in the incorrect direction may result in serious injury or death and/or severe damage to property. •...
Page 22 SAFETY • Select a travel route that is as flat as possible. Steer the machine as straight as possible, making small gradual changes repeatedly in direction. • Check the strengths of bridges and road shoulders before traveling on them, and reinforce if necessary. •...
Page 23: Avoid Injury From Rollaway Accidents
SAFETY AVOID INJURY FROM ROLLAWAY ACCI- DENTS • Death or serious injury may result if you attempt to mount or try to bodily stop a moving machine. • Park the machine in compliance with the safe parking procedures described on page S-19 to prevent the ma- chine from running away.
Page 24: 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 25: Keep Person Clear From Working Area
SAFETY KEEP PERSON CLEAR FROM WORKING AREA • If a person is present near the operating machine, the person may come in contact with the swinging front attachment or counterweight and/or may be crushed against an other object, resulting in serious injury or death.
Page 26: Avoid Tipping
SAFETY AVOID TIPPING • The danger of tipping is always present when operating on a grade, possibly resulting in serious injury or death. To avoid tipping: • Be extra careful before operating on a grade. • Prepare machine operating area flat. •...
Page 27: Dig With Caution
SAFETY 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. • Before digging check the location of cables, gas lines, and water lines. • Keep the minimum distance required, by law, from cables, gas lines, and water lines.
Page 28: Precautions For Lightening
SAFETY PRECAUTIONS FOR LIGHTENING • The machine is vulnerable to lighting strikes. • In the event of an electrical storm, immediately stop operation, and lower the bucket to the ground. Evacuate to a safe place far away from the machine. •...
Page 29: Park Machine Safely
SAFETY PARK MACHINE SAFELY • Unless the machine is not correctly parked, any haz- ardous situations such as running away of the machine or damage by vandalism may result, causing the ma- chine to operate unsafely when the engine is re-started. Follow instructions described below when parking the machine.
Page 30: Safety Transporting
SAFETY SAFETY TRANSPORTING • The danger of tipping is present when loading/unloading the machine onto/from a truck or trailer bed. • Be sure to observe local regulations when transporting the machine on public roads. SA-1307 • Provide an appropriate truck or trailer for transporting the machine.
Page 31: Practice Safe Maintenance
SAFETY PRACTICE SAFE MAINTENANCE • Inspection/maintenance work may produce hazardous situations by contacting and/or accessing a part of body to a moving, high pressure, and/or high temperature part of the machine. To avoid serious personal injury or death, follow the instructions described below. •...
Page 32: Warn Others Of Service Work
SAFETY • Disconnect battery ground cable (−) before making adjustments to electrical systems or before welding on the machine. • 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. In case the light bulb is broken, spilled fuel, oil, antifreeze fluid, or window washer fluid may catch fire.
Page 33: Support Machine Properly
SAFETY SUPPORT MACHINE PROPERLY • Never attempt to work on the machine without securing the machine first. • Always lower the attachment to the ground before you work on the machine. • If you must work on a lifted machine or attachment, securely support the machine or attachment with stays or blocks strong enough to support the machine and/or attachment weight.
Page 34: Store Attachments Safely
SAFETY STORE ATTACHMENTS SAFELY • Stored attachments such as buckets, hydraulic hammers, and blades can fall and cause serious injury or death. • Securely store attachments and implements to prevent falling accidents. • Keep children and bystanders away from storage areas.
Page 35: Replace Rubber Hoses Periodically
SAFETY REPLACE RUBBER HOSES PERIODICALLY • Rubber hoses that contain flammable fluids such as hydraulic oil or fuel 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 visual inspection alone.
Page 36: Prevent Fires
SAFETY PREVENT FIRES Check for Oil Leaks: • Fuel, hydraulic oil and lubricant leaks can lead to fires, possibly resulting in personal injury or death. • Check for 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, for oil leaks.
Page 37 SAFETY Precautions for Handling Flammables • Spilled fuel and oil, and trash, grease, debris, accumulated coal dust, and other flammables may cause fires. • Prevent fires by inspecting and cleaning the machine daily, and by removing spilled or accumulated flammables immediately. •...
Page 38: Evacuating In Case Of Fire
• Keep bystanders out of the work site during operation. SA-029 Asbestos might be present in imitation parts. Use only genuine Hitachi Parts. S-28...
Page 39: Precautions For Welding And Grinding
SAFETY PRECAUTIONS FOR WELDING AND GRIND- • Welding may generate gas and/or small fires. • Be sure to perform welding in a well ventilated and prepared area. Store flammable objects in a safe place before starting welding. • Only qualified personnel should perform welding. Never allow an unqualified person to perform welding.
Page 40: Remove Paint Before Welding Or Heating
SAFETY REMOVE PAINT BEFORE WELDING OR HEATING • Hazardous fumes can be generated when paint is heated by welding, soldering, or using a torch. If inhaled, these fumes may cause sickness. • Remove paint before welding or heating. • Avoid potentially toxic fumes and dust. •...
Page 41: Precautions For Handling Refrigerant
SAFETY PRECAUTIONS FOR HANDLING REFRIG- ERANT • If refrigerant is splashed into eyes or spilled onto skin, blindness or a cold contact burn may result. • Refer to the precautions described on the refrigerant container for handling refrigerant. • Use a recovery and recycling system to avoid venting refrigerant into the atmosphere.
Page 42: Dispose Of Waste Properly
• Improperly disposing of waste can threaten the environment and ecology. Potentially harmful waste used with HITACHI equipment includes such items as oil, fuel, coolant, brake fluid, filters, and batteries. • When draining fluid, use a leakproof container with a capacity larger than the drained fluid volume to receive it.
Page 43: Safety Signs
SAFETY SIGNS All safety signs and their locations affixed on the machine are illustrated in this group. Make sure of the contents de- scribed in the safety signs through reading actual ones affixed on the machine to ensure safe machine operation. Always keep the safety signs clean.
Page 44 SAFETY SIGNS CANOPY SS-2684 SS-259 SS-2652 SS-024 SS-2639 SS3090482 M1M7-07-021 S-34...
Page 45 SAFETY SIGNS CANOPY SS-2651 SS3088058 M1M7-01-021 ZX30U , ZX35U , ZX40U , ZX50U SS-2636 SS4433590 ZX27U SS-2753 S-35...
Page 46 SAFETY SIGNS SS4604981 SS-2685 SS4642517 SS-2685 SS4430516 ZX27U , ZX30U , ZX35U SS-2686 ZX40U , ZX50U SS-2687 S-36...
Page 47 SAFETY SIGNS • When using the floor tilt mechanism, consult your authorized dealer. If bolts are removed or in- stalled by unauthorized personnel, mismatch to ROPS may occur. Remove bolts (not covered with resin caps) in the rear section of the operator’s seat.
Page 48 SAFETY SIGNS (Cab-Equipped Machines) SS4642980 M1M7-01-020 (Cab-Equipped Machines) M1M7-01-013 SS-1832 (2Way Multi Lever Equipped Machines) SS4605065 SS-2640 S-38...
Page 49 SAFETY SIGNS ROPS/TOPS/FOPS Canopy and Cab • To maintain unimpaired operator protection and manu- facture’s protective structure • Damaged Roll Over Protective Structure (ROPS), Tip Over Protective Structure (TOPS), Falling Object Protective Structure (FOPS) must be replaced, not repaired or revised. •...
Page 50 SAFETY SIGNS MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................S-40...
Page 51: Components Name
COMPONENTS NAME COMPONENTS NAME M1M7-01-001 1- Bucket 7- Boom Cylinder 13- Front Idler 8- Canopy 14- Blade Cylinder 2- Arm 3- Bucket Cylinder 9- Track Shoe 15- Blade 4- Arm Cylinder 10- Counterweight 16- Boom-Swing Cylinder 5- Work Light 11- Travel Device 6- Boom 12- Track Frame...
Page 52: Operator's Station
OPERATOR’S STATION PEDALS, LEVERS AND MONITOR PANEL 1- Left Control Lever 2- Left Travel Lever 3- Right Travel Lever 4- Right Control Lever / Horn Switch 5- Blade Lever 6- Key Switch 7- Engine Control Dial (ZX30U , ZX35U , ZX40U , ZX50U Engine Control Lever (ZX27U...
Page 53 OPERATOR’S STATION 17- Air Conditioner Control Panel (Cab equipped machine) 18- Ash Tray (Cab equipped machine) 19- Radio (AM/FM, Cab equipped machine) 20- Cup Holder 21- Fuse Box ZX27U M1M7-01-035 M1M7-01-004 ZX30U ZX35U ZX40U ZX50U M1LA-01-005...
Page 54: Key Switch
OPERATOR’S STATION KEY SWITCH 1- OFF (Engine OFF) 2- ON (Engine ON) 3- START (Engine Start) 4- HEAT (Engine Preheat) M1M7-01-007 SWITCH PANEL 5- Work Light Switch Press the top side of switch (5) to turn work lights (9) located on the boom and cab roof front ON. Press the bottom side of switch (5) to turn work lights (9) OFF.
Page 55: Monitor Panel
OPERATOR’S STATION MONITOR PANEL 1- Coolant Temperature Gauge 2- Fuel Gauge 3- Liquid Crystal Display (Hour Meter, etc) 4- Set Switch 5- Display Control Switch 6- Auto-Idle Indicator (Except ZX27U 7- Auto-Idle Switch (Except ZX27U 8- Fast Travel Mode Indicator 9- Preheat Indicator 10- Alternator Indicator 11- Fuel Level Indicator...
Page 56: System Failure Indicator
OPERATOR’S STATION System Failure Indicator The system failure indicator comes ON or flashes an abnormality may be present in the engine control system (optional: Except ZX27U ). If the system failure indicator comes ON or flashes, immediately contact your author- ized dealer for repair.
Page 57: Alternator Indicator
OPERATOR’S STATION Alternator Indicator The red indicator will light when low alternator output is present. Check the electrical system such as the alternator and/or battery system. M178-01-038 Preheat Indicator When the key switch is turned to the HEAT position, or- ange indicator will light.
Page 58: Liquid Crystal Display (Lcd), Display Selection Switch, And Set Switch
OPERATOR’S STATION LIQUID CRYSTAL DISPLAY (LCD), DISPLAY SELECTION SWITCH, AND SET SWITCH LCD (3) indicates 3 types of meters, Hour Meter, Trip Meter 1 or Trip Meter 2. NOTE: After the key switch is turned ON, LCD always indicates the hour meter. •...
Page 59: How To Operate Trip Meter
OPERATOR’S STATION HOW TO OPERATE TRIP METER • Trip Meter Function The trip meter flashes the trip mark (TRIP 1 or TRIP 2) to inform the operator that the machine operation hours have reached the preset hour. The trip mark continues to flash for 30 seconds when the machine operation hours reach the preset hours.
Page 60 OPERATOR’S STATION • Set Time Change 1. Turn the key switch ON. Display the trip meter you wish to change the set time by operating display se- lection switch (5). The trip meter will display the re- maining time until the trip mark starts flashing at this time.
Page 61: Auto-Idle Switch (Except Zx27U )
OPERATOR’S STATION AUTO-IDLE SWITCH (Except ZX27U • Auto-Idle Operation When pressing auto-idle switch (13), the engine speed is reduced to the slow idle speed approx. 4 seconds after returning all control levers to neutral. Thereby, the fuel M1CF-01-002 consumption is reduced. When the auto-idle mode is selected, auto-idle indicator (14) on the monitor panel lights.
Page 62: Air Conditioner Operation
OPERATOR’S STATION AIR CONDITIONER OPERATION 1- Control Panel 2- Right Front Air Vent 1 3- Right Front Air Vent 2 4- Foot Air Vent NOTE: Control air-flow from right front air vents (1 and 2) by rotating the louver in the horizontal direc- tion so that the air vents can be used as a de- froster.
Page 63 OPERATOR’S STATION Heating Operation Although warm air will blow out from all three vents, normally the foot vent is used for heating operation. After selecting the foot vent by operating vent mode switch (7), press temperature control switch (8) to set the tempera- ture indicator toward the right end side.
Page 64: Tips For Air Conditioner Usage
OPERATOR’S STATION TIPS FOR AIR CONDITIONER USAGE Rapid Cooling Temperature in the cab may rise over 80°C when the machine is exposed to direct sunlight with the cab win- dows closed. Under this condition, in case temperature in the cab is required to be rapidly cooled, ventilate air from the cab first by opening the windows.
Page 65: Radio (Cab Equipped Machines)
OPERATOR’S STATION RADIO (Cab Equipped Machines) 1- Radio/Clock M1M7-01-004 1-15...
Page 66: Am/Fm Radio Operation
OPERATOR’S STATION AM/FM RADIO OPERATION Part Name and Function 1- Power Switch/Volume Control Knob Rotate the knob to the right to supply electric power (a click sound will be heard when the unit is turned ON). Rotate the knob further to turn up the volume. Rotate the knob in the reverse direction to turn down the volume and the unit OFF.
Page 67 OPERATOR’S STATION Tuning Procedure 1. Tap the TUNE ∧ button (9) to increase the frequency. Tap the TUNE ∨ button (9) to decrease the frequency. Tap and hold the button to change the frequency continuously. 2. Automatic Tuning Press this button to automatically move the frequency up and to seek a receivable station.
Page 68: Cab Door Release Lever (Cab-Equipped Machines)
OPERATOR’S STATION Clock Setting Procedure While pressing CLOCK button In case the frequency is indicated on the display, press the CLOCK button (4) to display the time. While pressing the CLOCK button (4) press TUNE∧M button to change the minute display. While pressing the CLOCK button (4), press TUNE∨H button to change the Minute is adjusted hour display.
Page 69: Opening/Closing Cab Front Window (Cab-Equipped Machines)
OPERATOR’S STATION OPENING/CLOSING CAB FRONT WINDOW (Cab-equipped machines) Front Window 1. Disengage lock lever (1) provided at the upper right and left corner of the front window. 2. Hold the handles (in two places) on the front window frame and raise the window until the lock lever en- gages with the window frame.
Page 70: Adjusting Operator's Seat
OPERATOR’S STATION ADJUSTING OPERATOR’S SEAT Seat Fore-Aft Adjustment Operate seat fore-aft slide lever (1). Seat fore-aft posi- tion can be adjusted at the interval of 20 mm (0.8 in) in 6 steps (120 mm (5 in) in total). M1M7-01-016 TOOL AND OPERATOR’S MANUAL BOXES Tool box (2) (4) and operator’s manual box (3) are located under the operator’s seat, under the floor mat and behind the backrest of the operator’s seat respectively.
Page 71: Emergency Exit (Cab-Equipped Machines)
OPERATOR’S STATION EMERGENCY EXIT (cab-equipped machines) If the operator’s cab door can not be opened in an emer- gency, escape in the following methods. 1. When required to escape from the cab when the door is difficult or impossible to open in an emergency, open the front window.
Page 72: Seat Belt (Optional)
OPERATOR’S STATION SEAT BELT (OPTIONAL) WARNING: Be sure to use the seat belt when op- erating the machine. Before operating the machine, be sure to examine seat belt (1), buckle (2), or attaching hardware. Replace seat belt (1), buckle (2), or attaching hardware if they are damaged, or worn.
Page 73: Break-In
BREAK-IN BREAKING IN NEW MACHINE IMPORTANT: Operating a new machine at full load without first breaking in can cause scratches and/or seizures, consequently affecting the service life of the machine. Thoroughly perform break-in operation. The service life and performance of the machine can be greatly affected by operation and maintenance of the ma- chine during the initial stage of operation.
Page 74 BREAK-IN MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 75: Operating The Engine
OPERATING THE ENGINE BEFORE STARTING ENGINE 1. Check that pilot control shut-off lever (1) in the LOCK position. 2. Confirm that all control levers are placed in neutral. 3. Check indicator bulbs as follows: Turn key switch (2) to the ON position. All indicator lights and warning lamps will come on.
Page 76: Starting Engine
OPERATING THE ENGINE STARTING ENGINE Starting in Ordinary Temperature 1. Check that pilot control shut-off lever (1) in the LOCK position. 2. Turn engine control dial (3) or engine control lever (3) to the slow idle position. 3. Sound the horn to alert bystanders. 4.
Page 77: Starting In Cold Weather
OPERATING THE ENGINE Starting in Cold Weather 1. Check that pilot control shut-off lever (1) is in the LOCK position. 2. Turn engine control dial (3) or engine control lever (3) to around the middle between the slow and fast idle positions.
Page 78: Check Machine After Starting Engine
OPERATING THE ENGINE CHECK MACHINE AFTER STARTING ENGINE IMPORTANT: In case any abnormality is found in the monitor, immediately stop the engine. Trace the cause of the problem. Check Using the Monitor After the engine has started, check the following points through the monitor.
Page 79: Using Booster Batteries
OPERATING THE ENGINE USING BOOSTER BATTERIES WARNING: An explosive gas is produced while a battery is in use or being charged. Keep flames or sparks away from the battery area. Park the ma- chine and booster battery machine on a dry, firm or concrete surface, not on steel plates.
Page 80: Stopping The Engine
OPERATING THE ENGINE STOPPING THE ENGINE Stop the engine following the steps below. 1. Before stopping the engine, lower the bucket and blade to the ground unless specified. 2. Return the engine control dial or the engine control lever to the slow idle position and keep the engine running at slow idle speed for 5 minutes.
Page 81: Driving The Machine
DRIVING THE MACHINE TRAVEL LEVERS AND PEDALS Front Travel operation can be performed with either the levers or pedals. Blade WARNING: In the standard traveling position, the front idlers are located in front of the operator’s seat and the travel motors at the rear. If the travel motors are positioned at the front of the machine, Left Right...
Page 82 DRIVING THE MACHINE • Pivot Turn Steer the machine by driving only one side crawler. Operate either of the travel levers (or pedals). M1M7-04-012 Pivot Turn M104-04-005 • Spin Turn Steer the machine in a position by driving both side crawlers in opposite directions each other.
Page 83: Travel Mode Switch
DRIVING THE MACHINE TRAVEL MODE SWITCH WARNING: Never attempt to shift the travel mode from the slow to fast while descending a slope. Return the travel levers (pedals) to neutral once before shifting the travel mode. Press the RABBIT mark side on travel mode switch (1) to select the fast travel mode.
Page 84: Traveling On Soft Ground
DRIVING THE MACHINE TRAVELING ON SOFT GROUND Avoid traveling on soft ground as much as possible. If traveling on a soft ground is unavoidable, carefully operate the machine while observing the following points. • Drive the machine as far as the machine can move by own propelling power.
Page 85: Towing Machine
DRIVING THE MACHINE TOWING MACHINE In case it is difficult for the machine to evacuate from a soft terrain by own propelling power, attach wire ropes as illus- trated to the right. Tow the machine using another machine. Be sure to attach the wire ropes around the track frames. To prevent the wire ropes from being damaged, place pieces of soft protective material between the wire ropes and the edge corners of the frame.
Page 86: Driving In Water Or On Soft Ground
DRIVING THE MACHINE DRIVING IN WATER OR ON SOFT GROUND 1. If the footing is even and the water slow running, the machine can drive in water up to the upper track shoe surface (A) at the top of the front idler. In case the footing is uneven and the water is flowing fast, be careful not to submerge the swing bearing, swing pinion gears, and/or center joint in water or mud.
Page 87: Precautions For Traveling On Slopes
DRIVING THE MACHINE PRECAUTIONS FOR TRAVELING ON SLOPES WARNING: Avoid possible injury from traveling on slopes. Tipping over or skidding down of the machine may result. Be sure to travel at slow speed on slopes. Never attempt to travel on slopes with the bucket loaded or any load sus- pended by the bucket.
Page 88: Parking And Stopping On Slopes
DRIVING THE MACHINE PARKING AND STOPPING ON SLOPES WARNING: Parking and/or stopping on slopes is extremely dangerous. Avoid parking and/or stop- ping the machine on slopes. If parking and/or stopping on slopes is unavoidable, lower both the bucket and the blade to the ground, and place all levers in the neutral position.
Page 89 OPERATING THE MACHINE CONTROL LEVER (ISO EXCAVATOR PATTERN) WARNING: Be sure to check the location and function of each control lever before operating. The upper structure and/or front attachment may unexpectedly move when attempting to turn and look behind the machine as a part of operator’s body may come into contact with the control lever(s).
Page 90: Operating The Machine
Labels displaying the available lever control patterns are provided at the right of the operator. As illustrated below, the labels with H pattern mark at the right bottom corner indicate the HITACHI Excavator Pattern. M1M7-01-002 M1LA-05-014 When a control lever is released, it automatically returns to neutral, stopping the function in that position.
Page 91: Control Lever (Sae-Backhoe Pattern If Equipped (2 Way Multi Valve)
OPERATING THE MACHINE CONTROL LEVER (SAE-BACKHOE PATTERN) --- IF EQUIPPED (2 Way Multi Valve) WARNING: Make sure you know the location and function of each control lever before operating. The upperstructure and/or front attachment may unexpectedly move in an attempt to look back because a part of operator’s body may come into contact with the control lever(s).
Page 92: Boom-Swing Pedal
OPERATING THE MACHINE BOOM-SWING PEDAL Use the boom swing function to efficiently operate the machine when excavating grooves along roadsides or near walls. The boom swing operation is performed using boom-swing pedal (1) located at the operator’s right foot as illustrated to the right Boom-Swing Operation 1.
Page 93: Auxiliary Pedal (Optional)
OPERATING THE MACHINE AUXILIARY PEDAL (OPTIONAL) Use the auxiliary pedal (2) located at the operator’s left front, as illustrated to the right, to operate hydraulic breaker, crusher, etc. Operation 1. Turn auxiliary pedal cover (1) forward. 2. Step on the right or the left side of the auxiliary pedal (2) to operate the front-end attachment such as a hy- draulic breaker 3.
Page 94: Blade Lever
OPERATING THE MACHINE BLADE LEVER Use blade lever (1) on the operator’s right to raise and lower the blade. When the lever is released, it automatically returns to neu- tral, holding the blade in the present position until the lever is operated again.
Page 95: Precautions For Blade Operation
OPERATING THE MACHINE PRECAUTIONS FOR BLADE OPERATION This blade is designed as a light service attachment of the hydraulic excavator. Please keep the following points in mind: • This blade is designed for bull dozing work only. Do not attempt to dig deeply with the blade. Doing so may damage not only the blade but the undercarriage as well.
Page 96: Pilot Control Shut-Off Lever
OPERATING THE MACHINE PILOT CONTROL SHUT-OFF LEVER The pilot control shut-off lever is a device to prevent the machine from being unexpectedly operated even if the control levers are accidentally moved, such as with a part of the body or when the operator is getting in or out of the operator’s station.
Page 97: Warming Up Operation
OPERATING THE MACHINE WARMING UP OPERATION The normal operating temperature of hydraulic oil is be- tween 50 and 80 °C (122 and 176 °F). Hydraulic compo- nents may be seriously damaged if the machine is oper- ated when the hydraulic oil temperature is below 20 °C (68 °F).
Page 98: Auto-Idle Control (Except Zx27U -2 )
OPERATING THE MACHINE AUTO-IDLE CONTROL (Except ZX27U Auto-Idle Function During operation, approximately 4 seconds after all con- trol levers have been returned to neutral, this system reduces the engine speed to the auto-idle setting until any control lever is operated again to improve fuel con- sumption.
Page 99: Operating Backhoe
OPERATING THE MACHINE OPERATING BACKHOE • Select an arm and bucket whose specifications match the working conditions. (Refer to “Kinds and Applica- tions of Buckets” in the specification section.) • Pull the bucket toward the machine using the arm as the main digging force.
Page 100: Grading Operation
OPERATING THE MACHINE GRADING OPERATION Use the blade for soil refilling and general grading opera- tions after excavation. Grading operation can be also per- formed by operating the boom, arm, and bucket simulta- neously. IMPORTANT: When grading the ground with the bucket, do not pull or push dirt with the bucket while traveling the machine like a bulldozer.
Page 101: Avoid Striking With Bucket
OPERATING THE MACHINE AVOID STRIKING WITH BUCKET WRONG WARNING: The bucket bottom is curved. There- fore, hammering or piling work with the bucket is very hazardous. In addition, damage to the bucket and the front attachment parts may result. Hammering or piling work with the bucket may create haz- ardous situations.
Page 102: Avoid Other Than Specified Machine Operations
OPERATING THE MACHINE AVOID OTHER THAN SPECIFIED MACHINE OPERATIONS This machine has been exclusively designed for excavation and loading works. Do not apply this machine to works other than excava- tion and loading. Do not operate the machine under any conditions beyond the these specifications.
Page 103: Boom Cylinder May Hit Blade
OPERATING THE MACHINE BOOM CYLINDER MAY HIT BLADE When digging deeply with the blade positioned at the front, the boom cylinder or bucket may accidentally hit the blade, causing damage. Take care to prevent this from happening. M586-05-016 M586-05-017 5-15...
Page 104: Avoid Hitting Blade With Bucket
OPERATING THE MACHINE AVOID HITTING BLADE WITH BUCKET When rolling in the arm in a travel or transportation position, be careful not to hit the blade with the bucket. M586-05-017 AVOID COLLIDING BLADE AGAINST ROCKS Do not attempt to allow the blade to collide with rocks. Premature damage to the blade and the blade cylinders may result.
Page 105: Using Rubber Crawler
OPERATING THE MACHINE USING RUBBER CRAWLER Rubber crawlers are designed to allow the machine to travel without damaging road surfaces such as paved road surfaces. Avoid damage to the rubber crawlers by following the precautions below: Forbidden Operations 1. Do not operate or steer the machine on or near river-terrace, boulder and boulder mixed ground, crushed-stone ground, uneven hardpan surfaces, stumps, reinforcing bars, scraps, and steel plate...
Page 106 OPERATING THE MACHINE 3. Operating the machine with rubber crawlers sagging on uneven surfaces can result in derailment of rubber crawler, possibly causing the rubber crawlers to be damaged. M586-05-024 4. When lowering the machine raised above the ground using the front attachment, slowly lower the machine Roller to the ground.
Page 107: Hydraulic Breaker (Optional)
OPERATING THE MACHINE HYDRAULIC BREAKER (OPTIONAL) Before installing a hydraulic breaker to the machine, change in machine stability, and the hydraulic pressure and flow rate to operate the hydraulic breaker must be checked. Consult your authorized dealer for selection of the hydraulic breaker model to be installed.
Page 108 OPERATING THE MACHINE 3. Do not operate the breaker with the hydraulic cylin- WRONG ders fully extended or retracted. When operating the breaker, position each hydraulic cylinder so that an allowance of more than 50 mm (2in) from the stroke end can be given before the cylinder piston comes in contact with the cylinder head or bottom.
Page 109 OPERATING THE MACHINE 7. Do not allow the breaker chisel to come in contact with the boom when rolling in the arm and the breaker. Watch Out! Take care not to hit the boom with the breaker 8. Change hydraulic oil and replace the full flow filter M1M7-05-023 element at regular intervals.
Page 110: Crusher Operation (Optional)
OPERATING THE MACHINE CRUSHER OPERATION (OPTIONAL) Before installing a hydraulic crusher on the machine, machine stability, and the hydraulic pressure and flow rate to operate the hydraulic crusher must be checked. Consult your authorized dealer for selection of the hy- draulic crusher model to be installed.
Page 111: Precautions For After Operating The Machine
OPERATING THE MACHINE • When crushing objects in high positions such as a ceiling, carefully operate the machine so that falling WRONG objects do not come in contact with the machine. • Before operating the machine on a floor in a building, check that the floor is strong enough to support the machine weight.
Page 112: Auxiliary Flow Rate Control
OPERATING THE MACHINE AUXILIARY FLOW RATE CONTROL (OPTIONAL) (Except ZX27U The maximum and minimum hydraulic flow rate in the aux- iliary pipe line can be controlled as follows: ZX30U ZX40U ref. ZX35U ZX50U ZX27U Minimum 40 L 45 L − Flow Rate (11US gal)/min (12 US gal)/min...
Page 113: Emergency Boom Lowering Procedure
OPERATING THE MACHINE EMERGENCY BOOM LOWERING PROCEDURE WARNING: Prevent personal injury. Confirm that no one is under the front attachment before starting the procedure below. If the engine stalls and cannot be restarted, lower the boom to lower the bucket to the ground referring to the emer- gency boom lowering procedure stated below.
Page 114 OPERATING THE MACHINE 3. Lower the boom in the following procedures. ZX27U /30U /35U If the front attachment is not loaded. WARNING: Loosen overload relief valve slowly. If it is loosened rapidly, the boom may also lower rapidly. Do not loosen it more than 3/4 turns, as the hydraulic oil may spout.
Page 115: Transporting
TRANSPORTING TRANSPORTING BY ROAD When transporting the machine on public roads, be sure to first be aware of and then, follow all local regulations. 1. Before transporting the machine on a trailer, check the width, height, length, and weight of the trailer with the machine loaded.
Page 116: Loading
TRANSPORTING LOADING WARNING: • Always turn the auto-idle switch OFF. (Except ZX27U ) Failure to do so may cause the engine speed to suddenly change. • Always travel the machine slowly. Press the travel mode switch (1) toward the TURTLE side.
Page 117: Securing The Machine To The Trailer For Transportation
TRANSPORTING SECURING THE MACHINE TO THE TRAILER FOR TRANSPORTATION WARNING: Securely tighten the machine to the flatbed with wire ropes. During transportation, the machine will be moved back and forth or laterally. 1. Wedge the front and rear of the crawlers to secure the machine in position.
Page 118: Unloading
TRANSPORTING UNLOADING WARNING: • Always turn the auto-idle switch OFF. (Except ZX27U ) Failure to do so may cause the engine speed to suddenly change. • Always travel the machine slowly. Press the travel mode switch (1) toward the TURTLE side.
Page 119: Lifting Machine With Crane
TRANSPORTING LIFTING MACHINE WITH CRANE WARNING: • Do not lift the machine with anyone riding on the machine. • Use wire ropes and shackles strong enough to support the weight of the machine. ZX27U : 2400 mm (94 in) ZX27U : 4450 mm (175 in) •...
Page 120 TRANSPORTING MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 121: Maintenance
• Use only genuine HITACHI parts. • Failure to use recommended fuel, lu- bricants, and genuine Hitachi parts will result in loss of Hitachi product war- ranty. • Never adjust engine governor or hy- draulic system relief valve. • Protect electrical parts from water and steam.
Page 122: Prepare Machine For Inspection/Maintenance
MAINTENANCE PREPARE MACHINE FOR INSPECTION/MAINTENANCE Before performing inspection/maintenance of the machine, park the machine as described below unless otherwise specified. 1. Park the machine on a solid level surface. 2. Lower the working tools such as the bucket and/or blade to the ground. 3.
Page 123: Opening/Closing Engine Access Covers
MAINTENANCE OPENING/CLOSING ENGINE ACCESS COVERS WARNING: • Do not keep the engine access covers open when the machine is parked on a slope, or while the wind is blowing hard. The engine ac- cess covers may close accidentally, possibly resulting in personal injury. •...
Page 124: Opening/Closing Tank Covers
MAINTENANCE OPENING/CLOSING TANK COVERS WARNING: • Do not keep the tank cover open when the machine is parked on a slope, or while the wind is blowing hard. The tank cover may close ac- cidentally, possibly resulting in personal injury. •...
Page 125: Daily Inspection
MAINTENANCE DAILY INSPECTION Arm Cylinder Boom Bucket Cylinder Boom Swing Cylinder Swing Bearing Fuel Tank Link B Canopy Work Light Battery Boom Hydraulic Oil Tank Link A Cylinder Full Flow Filter Control Lever Suction Filter Bucket Swing Device Blade Cylinder Radiator, Oil Cooler Center Joint Side Cutter...
Page 126: Periodic Replacement Of Parts
MAINTENANCE PERIODIC REPLACEMENT OF PARTS To ensure safe and long trouble free operation, be sure to conduct periodic inspections of the machine. In addition, the parts as listed below are directly related to safety op- eration so that they are recommended to be periodically replaced.
Page 127: Maintenance Guide
MAINTENANCE MAINTENANCE GUIDE A. GREASING (See Page 7-11) Interval (hours) Parts Quantity 1000 2000 1. Front Joint Pins (Incl. around the swing post) Or every year 2. Bucket and Link Pins 3. Blade Pins Or every year 4. Swing Bearing 5.
Page 128 MAINTENANCE E. FUEL SYSTEM (See Page 7-37) Fuel tank capacity: ZX27U , ZX30U and ZX35U : 40L (11 US gal), ZX40U and ZX50U : 70L (18 US gal) Interval (hours) Parts Quantity 1000 2000 1. Check Water Separator 2. Drain Fuel Tank Sump As required 3.
Page 129 Shorten maintenance interval in dusty work site. For the first time only. NOTE: When genuine Hitachi long life coolant (LLC) is used, replace it every two years (in autumn) or after 2000 operating hours, whichever comes first. IMPORTANT: Use fresh water or tap water for the coolant. Avoid using strong acid or alkaline water. Be sure to use genuine Hitachi long life coolant (LLC).
Page 130: The Brand Names Of Recommended Oils And Lubricants
–20 to 40 °C –10 to 40 °C (–6 to 104 °F) (14 to 104 °F) (–6 to 104 °F) (14 to 104 °F) Manufacturer Hitachi * Super EX 46 HN Malti M Use high quality Diesel TOTAL Equivis ZS 46 Fuel only.
Page 131: Greasing
MAINTENANCE A. GREASING Front Joint Pins (Incl. Swing Post Joint Pins) --- every 500 hours or every year (every 100 hours up to 500 hours of operation) 1. Position machine with the arm cylinder fully retracted and the bucket cylinder fully extended. Lower bucket to the ground (the front attachment inspection posi- tion).
Page 132 MAINTENANCE (3) Boom foot ZX27U , ZX30U , ZX35U M1M7-07-022 ZX40U , ZX50U M1M7-07-058 (4) Arm cylinder rod end and bucket cylinder bottom M571-07-006 (5) Boom and arm joint pin, and arm cylinder bottom M585-07-046 7-12...
Page 133 MAINTENANCE (6) Swing cylinder M1M7-07-023 (7) Swing post M1M7-07-024 7-13...
Page 134: Front Joint Pins
MAINTENANCE Bucket and Link Pins --- every 100 hours Grease all submerged pins after operating in water. M503-07-092 Blade Pins --- every 500 hours or every year • Blade connecting pin • Blade cylinder rod end and bottom M1LA-07-037 Precautions for Front Attachment and Blade Re- moval 1.
Page 135: Swing Bearing
MAINTENANCE Swing Bearing --- every 250 hours WARNING: Before lubricating the swing bearing, lower the bucket and the blade to the ground, stop the engine, and place the pilot control shut-off lever to the LOCK position. Lubrication and rotation of the upperstructure must be done by one person only.
Page 136: Swing Internal Gear
MAINTENANCE Swing Internal Gear --- every 500 hours WARNING: Before lubricating the swing bearing, lower the bucket and the blade to the ground, stop the engine, and place the pilot control shut-off lever to the LOCK position. Lubrication and rotation of the upperstructure must be done by one person only.
Page 137: Tilt Mechanism
MAINTENANCE Tilt Mechanism --- every 250 hours 1. Remove bolts (1) from the top of the tilt mechanism and remove cover (2). M1M7-07-077 2. Coat the full length of operation bolt (3) with grease. Recommended grease: MOLYKOTE EM-30L manu- factured by Dow Corning Toray Co., Ltd. M1M7-07-078 7-17...
Page 138: Engine
MAINTENANCE B. ENGINE Engine Oil --- Level check daily (Check before starting the engine.) Check the oil level every day before starting the machine. Oil level must be between the marks on oil level gauge (1). If necessary, add the specified en- gine oil via oil filler (2).
Page 139 MAINTENANCE 5. Remove oil filter (3) from the engine by turning it counterclockwise using a filter wrench. The oil may spill from the filter bottom bracket at this time. Use an empty container to catch the spilled oil. 6. Coat the gasket of new filter (3) with engine oil. Turn the filter clockwise by hand until the gasket touches the sealing surface.
Page 140: Transmission
MAINTENANCE C. TRANSMISSION Travel Reduction Gear WARNING: • Each component of the travel reduction gear may be hot immediately after operation. Allow components to cool before starting to work on them. • The travel reduction gear may be pressurized. Be sure to release the internal pressure by slowly loosen the air bleed plug two to three turns before removing the plug.
Page 141 MAINTENANCE Change Gear Oil --- every 1000 hours 1. Park the machine on a level surface. 2. Rotate the travel motor until plugs are positioned as illustrated on the right. Stop the engine. 3. Slowly loosen plug (1) to release pressure. 4.
Page 142: Hydraulic System
MAINTENANCE D. HYDRAULIC SYSTEM Inspection and Maintenance of Hydraulic Equipment WARNING: When inspecting and/or maintaining hydraulic equipment, pay special attention to the following points. 1. Be sure to park the machine on a level, solid surface. 2. Lower the bucket and blade to the ground and stop the engine.
Page 143: Check Hydraulic Oil Level
MAINTENANCE Check Hydraulic Oil Level --- daily 1. Park the machine on a solid level surface. Position the machine with the arm cylinder fully retracted and the bucket cylinder fully extended. Lower the bucket and blade to the ground. Stop the engine. 2.
Page 144: Drain Hydraulic Oil Tank Sump
MAINTENANCE Drain Hydraulic Oil Tank Sump --- every 250 hours WARNING: Be sure to work only after oil tem- perature is low or before operation. Failure to do so may allow high temperature oil to spray, pos- sibly causing severe burns. 1.
Page 145: Change Hydraulic Oil
MAINTENANCE Change Hydraulic Oil --- every 1000 hours or 2000 hours WARNING: Be sure to work only after oil tem- perature is low or before operation. Failure to do so may allow high temperature oil to spray, pos- sibly causing severe burns. IMPORTANT: When changing hydraulic oil, take care not to allow foreign matter such as dirt, water or soil to enter the hydraulic sys-...
Page 146 MAINTENANCE 5. Slowly loosen drain plug (2) on the bottom of the hy- draulic oil tank. Allow oil to drain thoroughly 6. Clean, install and tighten drain plug (2) to the original position. ⋅ ZX30U ZX27U and ZX35U Wrench Size : 12 mm (PT3/8 Square Head Plug) Tightening Torque : 49 N⋅m (5 kgf⋅m, 36 lbf⋅ft) ZX40U...
Page 147 MAINTENANCE Bleed Air from Hydraulic System After changing hydraulic oil, bleed air from the hydraulic system by following the procedure described below. Oil Filter Bleed Air from Pump IMPORTANT: If the engine is started when the pump is not filled with hydraulic oil, damage to the pump may result.
Page 148: Clean Suction Filter
MAINTENANCE Clean Suction Filter--- when changing hydraulic The suction filter is located on the bottom side in the hy- draulic oil tank. Clean the suction filter when changing hydraulic oil. 1. After draining hydraulic oil, remove cover (1). Take care not to allow the O-ring to come off cover (1) at this time.
Page 149: Replace Full Flow Filter Element
MAINTENANCE Replace Full Flow Filter Element --- every 500 hours (first time after 250 hours) WARNING: Be sure to work only after oil tem- perature is low or before operation. Failure to do so may allow high temperature oil to spray, pos- sibly causing severe burns.
Page 150: Replace Pilot Filter Element
MAINTENANCE Replace Pilot Filter Element --- every 1000 hours WARNING: Be sure to work only after oil tem- perature is low or before operation. Failure to do so may allow high temperature oil to spray, pos- sibly causing severe burns. 1.
Page 151 MAINTENANCE 4. Rotate the hexagon section on the bottom of filter (4) case (6) counterclockwise using a tool such as a wrench to remove filter case (6) from head cover (5). 5. While rotating filter element (7), pull to remove filter element (7) downward.
Page 152: Check Hoses And Lines
MAINTENANCE Check Hoses and Lines --- daily --- every 250 hours WARNING: • Escaping flammable fluid may cause fire. Check for missing or loose clamps, kinked hoses, lines or hoses that rub against each other and/or come in contact with other components, and any oil leaks.
Page 153 MAINTENANCE Lines Interval Check Point Abnormality Remedy (Hours) Daily Flange type fitting Oil leak (11) Replace mating face and connection bolt Looseness or oil leak (11) Replace O-ring and/or retighten bolt M115-07-146 Weld joint surface Oil leak (12) Replace on flange type fitting Every Flange type fitting Crack (13)
Page 154 MAINTENANCE Hose Fitting • Metal Face Seal Fittings (Width Across Flats of Union Nut: 17, 19, 22, and 27 Fittings are used on smaller size hoses. Metal flare seat (4) on adapter (1) and metal flare (5) on hose (2) ends seal pressure oil.
Page 155 MAINTENANCE • Flat Face O-ring Seal Fitting (ORS Fitting) O-ring (1) is used on the end face of adapter (2) to prevent oil leakage between the joints. Precautions for Application 1. Replace O-ring (1) with a new one when re-assembling fittings. 2.
Page 156 MAINTENANCE Quick Coupler 1. Connection Procedure 1.1 While pulling and fully turning socket ring (1) counterclockwise, insert socket ring (1) onto plug (3) until the end face of socket ring (1) comes in contact with plug (3). 1.2 Release socket ring (1). Check that socket ring (1) is slightly moved backward by the spring force and that the coupler is held in position with balls (2).
Page 157: Fuel System
MAINTENANCE E. FUEL SYSTEM WARNING: Fuel is highly flammable. Handle fuel with care. Keep open flame or sparks away from fuel. Refueling After parking the machine on a level surface, check the fuel level with fuel gauge (1) and level gauge (2). When necessary to add fuel, remove fuel tank cap (3) and refill fuel.
Page 158: Check Water Separator
MAINTENANCE Check Water Separator --- daily When water is accumulated in water separator (2), Loosen drain plug (3) to drain water and sediment. If water is difficult to drain, loosen air bleed plug (4). M1M7-07-040 Drain Fuel Tank Sump --- as required Park the machine on a solid level surface.
Page 159: Replace Fuel Filter
MAINTENANCE Replace Fuel Filter --- every 500 hours 1. Close stop valve (1). 2. Remove fuel filter (2) with a fuel filter wrench. 3. Clean the mounting surface for fuel filter (2). 4. Install new fuel filter (2) while rotating the fuel filter clockwise until the fuel filter comes in contact with the mounting surface.
Page 160: Check Fuel Hoses
MAINTENANCE Check Fuel Hoses --- daily --- every 250 hours WARNING: • Escaping fuel may cause fire. Check for kinked hoses, or hoses that rub against each other and/or come in contact with other components, and any oil leaks. • Repair or replace any loose or damaged hoses.
Page 161: Air Cleaner
MAINTENANCE F. AIR CLEANER Clean the Air Cleaner Element --- every 250 hours or when the air cleaner indicator comes ON. Replace the Air Cleaner Element --- after cleaning six times or after one year Clean and replace air cleaner element. 1.
Page 162: Cooling System
Coolant Use fresh water which includes fewer impurities or nor- mal tap water for the coolant. Avoid using strong acid or alkaline water. Be sure to use genuine Hitachi long life coolant (LLC). Long Life Coolant (LLC) LLC has two functions, antifreeze and anti-rust agent. As a general rule, the ratio of antifreeze should range be- tween 30% and 60%.
Page 163: Check Coolant Level
MAINTENANCE Check Coolant Level --- daily Check that the coolant level is between the FULL and LOW marks on coolant reservoir (2). If the coolant level is below the low mark, remove the reservoir cap and add coolant to coolant reservoir (2). WARNING: Do not loosen radiator filler cap (1) unless the system is cool.
Page 164: Check And Adjust Fan Belt Tension
MAINTENANCE Check and Adjust Fan Belt Tension Deflection 7 to 9 mm Push --- every 100 hours (first time after 50 hours) (0.28 to 0.35 in) [Approx.98 N (10 kgf, 22 lbf)] IMPORTANT: Loose fan belt tension may result in in- sufficient battery charging, engine overheating as well as a rapid, abnormal belt wear.
Page 165: Change Coolant
MAINTENANCE Change Coolant --- twice a years (in spring and autumn) NOTE: In case genuine Hitachi Long-Life Coolant is used, change the coolant every two years (in autumn every other year), or every 2000 hours, whichever comes first. WARNING: Do not loosen the radiator cap unless the system is cool.
Page 166: Clean Radiator Core
MAINTENANCE Clean Radiator Core --- every 500 hours WARNING: Always wear safety glasses or gog- gles when using compressed air [less than 0.2 MPa (2 kgf/cm , 29 psi)] to clean radiator core. IMPORTANT: • Cover air cleaner inlet opening to prevent entry of dust and water while cleaning the radiator.
Page 167: Electrical System
MAINTENANCE H. ELECTRICAL SYSTEM IMPORTANT: • Improper radio communication equipment and associated parts, and/or improper installation of radio communication equipment effects the machine’s electronic parts, causing involuntary movement of the machine. Also, improper in- stallation of electrical equipment’s may cause machine failure and/or a fire on the machine.
Page 168 MAINTENANCE Electrolyte Level Check 1. Check the electrolyte level at least once a month. 2. Park the machine on level ground and stop the en- gine. 3. Check the electrolyte level. 3.1 When checking the level from the battery side: Clean around level check lines with a wet towel.
Page 169 MAINTENANCE Check Electrolyte Specific Gravity The specific gravity for electrolyte varies depending on electrolyte temperature. The specific gravity should be kept within the range shown below. Charge the battery if the specific gravity is below the limit. Working Range of Electrolyte Specific Gravity 40℃...
Page 170: Replacing Fuses
MAINTENANCE Replacing Fuses Fuse Box 1. If any electrical equipment fails to operate, first check the fuses in the fuse box. 2. One each capacity of spare fuses are provided in the fuse box. M1M7-07-052 M1M7-07-076 7-50...
Page 171: Miscellaneous
MAINTENANCE I. MISCELLANEOUS Check Bucket Teeth for Looseness and/or Wear --- daily Check the bucket teeth for wear and looseness. Replace teeth (1) if tooth wear exceeds the service limit shown below. Dimension A in mm (in.) M104-07-056 Limit of Use 128 (5.0″) 65 (2.6″) WARNING: Guard against injury from flying...
Page 172 MAINTENANCE 3. Clean shank (6) surface. 4. Install rubber pin lock (4) into shank (6) hole as shown. RIGHT WRONG WRONG M104-07-060 5. Position new tooth (1) over shank (6). RIGHT WRONG WRONG M104-07-061 6. Drive locking pin (5) fully into the hole as shown. WRONG RIGHT M104-07-062...
Page 173: Replace Bucket
MAINTENANCE Replace Bucket --- A s required WARNING: When driving the connecting pins in or out, guard against injury from flying pieces of metal or debris; wear a hard hat, goggles or safety glasses, heavy gloves and safety equip- ment appropriate for the job. Select a spacious job site with good footing.
Page 174: Adjust Track Sag (Rubber Crawler) And Check For Damage
MAINTENANCE Adjust Track Sag (rubber crawler) and Check for Damage --- daily Proper track sag adjustment is necessary to extend the service life of the rubber track and the travel device. Check Track Sag As illustrated to the right, raise the one side track which sag is to be measured, off the ground.
Page 175 MAINTENANCE Loosen Track (Rubber Crawler) WARNING: Do not loosen valve (1) too quickly or too much as high-pressure grease in the adjust- ing cylinder may spout out. Loosen carefully, keeping body parts and face away from valve (1). Never loosen grease fitting (2). IMPORTANT: When gravel or mud is packed around the components in the undercarriage, remove it before loosening valve (1).
Page 176: Replace Rubber Crawler
MAINTENANCE Replace Rubber Crawler --- As required WARNING: • Do not loosen valve (1) too quickly or too much as high-pressure grease in the adjusting cyl- inder may spout out. Loosen carefully, keeping body parts and face away from valve (1). Never loosen grease fitting (2).
Page 177 MAINTENANCE Installing Rubber Crawler 1. Lower the bucket and blade to raise both tracks off Grease Outlet ground. Place blocks under machine frame to support the machine. 2. Slowly turn valve (1) counterclockwise to allow grease to escape from the grease outlet. 3.
Page 178: Check Track Sag (Steel Crawler) (Optional)
MAINTENANCE Check Track Sag (steel crawler) (optional) --- every 50 hours Proper adjustment of track sag is vital to extending the service life of the track and travel device. Check Track Sag As illustrated to the right, raise the one side track, which sag is measured, off the ground.
Page 179 MAINTENANCE Loosen Track (Steel Crawler) WARNING: Do not loosen valve (1) too quickly or too much as high-pressure grease in the adjust- ing cylinder may spout out. Loosen carefully, keeping body parts and face away from valve (1). Never loosen grease fitting (2). IMPORTANT: When gravel or mud is packed around the components in the undercarriage, remove it before loosening valve (1).
Page 180 MAINTENANCE Converting the Track WARNING: • Consult your nearest authorized dealer for converting the track. Extremely strong force is being applied. Do no allow anyone to stand in front of the front idler. • After the rubber track is removed, the front idle will become free to remove.
Page 181: Check And Replace Seat Belt
MAINTENANCE Check and Replace Seat Belt Check --- daily Replace --- every 3 years Prior to operating the machine, thoroughly examine belt (1), buckle (2) and attaching hardware (3). If any item is damaged or materially worn, replace the damaged or worn item(s) before operating the machine.
Page 182: Check Air Conditioner (Machine With Cab)
MAINTENANCE Check Air Conditioner (Machine with Cab) --- daily WARNING: If refrigerant splashes into eyes or spills onto skin, blindness or cold contact burn may result. Never loosen the refrigerant circuit parts. Check for refrigerant leaking from the pipe joints If an oil seepage mark is found at the pipe joints illus- trated to the right, the refrigerant is possibly leaking.
Page 183: Clean And Replace Air Conditioner
MAINTENANCE Clean and Replace Air conditioner Re-circulation Filter Clean Re-circulation Filter --- every 500 hours Replace Re-circulation Filter--- after cleaning approx. 6 times NOTE: The recommenced maintenance hour is a ref- erence value. In case the machine is operated in dusty job site, replace the filter at a shorter interval.
Page 184 MAINTENANCE WARNING: Always wear safety glasses or gog- gles when using compressed air. Cleaning Clean the re-circulation filter by blowing compressed air or with water. When cleaning the filter with water, follow the procedure below. 1. Clean the filter using tap water. 2.
Page 185: Clean Cab Floor
MAINTENANCE Clean Cab Floor--- as required IMPORTANT: Only the cab floor can be washed with water. Take care not to splash other parts of the cab with water. Don’t increase the water pressure speed by squeezing the hose end. Never use steam to clean the cab floor.
Page 186: Check Injection Nozzle
MAINTENANCE Check Injection Nozzle • Cleaning Nozzle --- every 1500 hours • Adjusting Nozzle --- every 3000 hours Consult your authorized dealer for inspection and repair. Check and Adjust Valve Clearance --- every 1000 hours or every year Consult your authorized dealer for inspection and repair. Check Injection Timing --- every 2000 hours or every 2 years Consult your authorized dealer for inspection and repair.
Page 187: Check Starter And Alternator
MAINTENANCE Check Starter and Alternator --- every 1000 hours Consult your authorized dealer for inspection and repair. Check Radiator Cap --- every 2000 hours Consult your authorized dealer for inspection and repair. 7-67...
Page 188: Check Tightening Torque Of Bolts And Nuts
MAINTENANCE Check Tightening Torque of Bolts and Nuts (ZX27U , ZX30U , ZX35U --- every 250 hours (first time after 50 hours) missing, be sure to retighten or supply new parts. Tighten or retighten all bolts and nuts to the torque val- Check tightness after the first 50 hours then every ues shown in the Table below.
Page 189 MAINTENANCE Check Tightening Torque of Bolts and Nuts (ZX40U , ZX50U --- every 250 hours (first time after 50 hours) loose or missing, be sure to retighten or supply Tighten or retighten all bolts and nuts to the torque val- new parts.
Page 190 MAINTENANCE Tightening Torque Chart Hexagon Head Bolt Socket Bolt Wrench Wrench Socket Bolt Size Size M552-07-091 M552-07-090 M552-07-092 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) (2.2 to 2.9) 29.5 (3.0) (22) 19.5...
Page 191: Check Tilt Mechanism Fulcrum Bolts For Looseness
MAINTENANCE CHECK TILT MECHANISM FULCRUM BOLTS FOR LOOSENESS 1. Check tilt mechanism fulcrum pin nut (1) for loose- ness every 250 hours. In case nut (1) is found loose, remove the operator’s seat access cover on the right side. Then, retighten nut (1) to 49 N m (5.0 kgf m, 36 ⋅...
Page 192: Preparation For Inspection And Maintenance
MAINTENANCE PREPARATION FOR INSPECTION AND MAINTENANCE When the floor tilt mechanism is used: CAUTION: Do not open or close the floor tilt mechanism in daily inspection. The daily inspec- tion can be performed through the maintenance cover ports. Ground Level CAUTION: When using the floor tilt mechanism, consult your authorized dealer.
Page 193 MAINTENANCE IMPORTANT: The operation torque of adjuster screw (4) shall be less than 24.5 N⋅m (2.5 kgf⋅m, 18 lbf ft). In case the operating torque ⋅ requires more than 24.5 N⋅m (2.5 kgf⋅m, 18 lbf ft), bolts (3) may not be completely ⋅...
Page 194: Tilting Floor Down
MAINTENANCE TILTING FLOOR DOWN WARNING: Don’t quickly lower the floor. If the adjust screw (4) is quickly turned to lower the floor, the floor may severely vibrate, potentially creating hazardous conditions. 1. Before tilting the cab floor down, check if any tools or workshop towels are not left behind on the base ma- chine or in the operator’s cab, and the fall prevention bar has been stowed in position.
Page 195 MAINTENANCE 5. Securely install the canopy or cab with three bolts (3). Wrench size: 19 mm Tightening torque: 90 N⋅m (9.2 kgf⋅m, 67 lbf⋅ft) CAUTION: Unless bolts (3) are tightened to the specification, the machine will not meet the standard of the Roll-Over Protective Structure (ROPS).
Page 196 MAINTENANCE MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................7-76...
Page 197 CONSUMABLE PARTS LIST CONSUMABLE PARTS LIST Filter Element (ZX27U , ZX30U , ZX35U ZX27U ZX30U , ZX35U ← Full Flow Filter 4129280 ← Hydraulic Oil Suction Filter 4617512 ← Pilot Filter 4294130 Engine Oil Filter 4626337 4641043 ← Fuel Filter 4626336 ←...
Page 198: Consumable Parts List
CONSUMABLE PARTS LIST Bucket Parts (ZX27U , ZX30U , ZX35U ZX27U ZX30U , ZX35U Part No. Quantity Part No. Quantity Tooth Tooth 4339865 4339865 Lock Pin 4339868 4339868 Lock Rubber 4339867 4339867 Side Side Cutter (R) 4626441 4626441 Cutter Side Cutter (L) 4626442 4626442 Bolt...
Page 199 MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS Operating Precautions for Maintenance Conditions Muddy Soil, Before Operation: Check the tightness of plugs and all drain cocks. Rainy or After Operation: Clean the machine and check for cracks, dam- Snowy aged, loose or missing bolts and nuts.
Page 200: Maintenance Under Special Environmental Conditions
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Page 201: Storage
STORAGE STORING THE MACHINE 1. Thoroughly wash the machine to remove dirt, soil and debris from the machine. 2. Inspect the machine. Repair worn or damaged parts. Install new parts if necessary. 3. Clean the primary air cleaner element. 4. Lubricate all grease points. 5.
Page 202: Removing The Machine From Storage
STORAGE REMOVING THE MACHINE FROM STORAGE WARNING: Start the engine ONLY in a well-ventilated place. 1. Remove grease from the cylinder rods if coated. 2. Adjust alternator and fan belt tension. 3. Fill the fuel tank. Bleed air from the fuel system. Check all fluid levels.
Page 203 TROUBLESHOOTING TROUBLESHOOTING If any problem is found, troubleshoot to pinpoint the cause WARNING: Never attempt to adjust, disas- and take appropriate action to prevent the problem from semble, or repair hydraulic or electrical occurring again. If the cause cannot be pinpointed, contact components by yourself.
Page 204: Troubleshooting
TROUBLESHOOTING 3. Hydraulic System Trouble Cause Solution • Insufficient engine power • Inspect and repair Insufficient power: all actuators • Excessively worn hydraulic • Replace • Re-adjust pressure setting, or re- pump • Main relief valve failure place • Add hydraulic oil •...
Page 205: Specifications
SPECIFICATIONS SPECIFICATIONS ZX27U M1M7-12-001 ZX27U Type Canopy Type of Front-End Attachment Boom Swing Type Bucket Capacity (Heaped) 0.08 (0.10) Operating Weight kg (lb) 2800 (6170) 2950 (6500) Basic Machine Weight kg (lb) 2040 (4500) 2190 (4830) Yanmar 3TNV88 Engine kW/min 19.7/2200 (PS/rpm) (26.8/2200)
Page 206: Specifications
SPECIFICATIONS ZX30U M1M7-12-001 ZX30U Type Canopy Type of Front-End Attachment Boom Swing Type Bucket Capacity (Heaped) 0.09 (0.12) Operating Weight kg (lb) 3070 (6770) 3220 (7100) Basic Machine Weight kg (lb) 2270 (5000) 2420 (5340) Yanmar 3TNV88 Engine kW/min 22.3/2500 (PS/rpm) (30.3/2500) A: Overall Width...
Page 207 SPECIFICATIONS ZX35U M1M7-12-002 ZX35U Type Canopy Type of Front-End Attachment Boom Swing Type Bucket Capacity (Heaped) 0.11 (0.14) Operating Weight kg (lb) 3480 (7670) 3630 (8000) Basic Machine Weight kg (lb) 2630 (5800) 2780 (6130) Yanmar 3TNV88 Engine kW/min 22.3/2500 (PS/rpm) (30.3/2500) A: Overall Width...
Page 208 SPECIFICATIONS ZX40U M1M7-12-003 ZX40U Type Canopy Type of Front-End Attachment Boom Swing Type Bucket Capacity (Heaped) 0.14 (0.18) Operating Weight kg (lb) 4390 (9680) 4540 (10010) Basic Machine Weight kg (lb) 3240 (7140) 3390 (7470) Yanmar 4TNV88 Engine kW/min 29.8/2500 (PS/rpm) (40.5/2500) A: Overall Width...
Page 209 SPECIFICATIONS ZX50U M1M7-12-004 ZX50U Type Canopy Type of Front-End Attachment Boom Swing Type Bucket Capacity (Heaped) 0.16 (0.21) Operating Weight kg (lb) 4730 (10430) 4880 (10760) Basic Machine Weight kg (lb) 3560 (7850) 3710 (8180) Yanmar 4TNV88 Engine kW/min 29.8/2500 (PS/rpm) (40.5/2500) A: Overall Width...
Page 210: Working Ranges
SPECIFICATIONS WORKING RANGES ZX27U K (Left) K (Right) M1M7-12-005 ZX27U Category Item Canopy A: Maximum Digging Reach mm (ft⋅in) 4670 (15′4″) [4920 (16′2″)] B: Maximum Digging Depth mm (ft⋅in) 2620 (8′7″) [2920 (9′7″)] C: Maximum Cutting Height mm (ft⋅in) 4460 (14′8″) [4570 (14′12″)] 4290 (14′1″) [4350 (14′3″)] D: Maximum Dumping Height mm (ft⋅in) 3210 (10′6″) [3320 (10′11″)]...
Page 211 SPECIFICATIONS ZX30U K (Left) K (Right) M1M7-12-005 ZX30U Category Item Canopy A: Maximum Digging Reach mm (ft⋅in) 4900 (16′1″) [5170 (17′0″)] B: Maximum Digging Depth mm (ft⋅in) 2830 (9′3″) [3130 (10′3″)] C: Maximum Cutting Height mm (ft⋅in) 4680 (15′4″) [4720 (15′6″)] 4450 (14′7″) [4480 (14′8″)] D: Maximum Dumping Height mm (ft⋅in)
Page 212 SPECIFICATIONS ZX35U K (Left) K (Right) M1M7-12-006 ZX35U Category Item Canopy A: Maximum Digging Reach mm (ft⋅in) 5220 (17′2″) [5530 (18′2″)] B: Maximum Digging Depth mm (ft⋅in) 3060 (10′0″) [3460 (11′4″)] C: Maximum Cutting Height mm (ft⋅in) 4900 (16′1″) [5010 (16′5″)] 4720 (15′6″) [4820 (15′10″)] D: Maximum Dumping Height mm (ft⋅in) 3490 (11′5″) [3600 (11′10″)] 3330 (10′11″) [3430 (11′3″)]...
Page 213 SPECIFICATIONS ZX40U K (Left) K (Right) M1M7-12-007 ZX40U Category Item Canopy A: Maximum Digging Reach mm (ft⋅in) 5750 (18′10″) [6050 (19′10″)] B: Maximum Digging Depth mm (ft⋅in) 3350 (11′0″) [3660 (12′0″)] C: Maximum Cutting Height mm (ft⋅in) 5600 (18′4″) [5840 (19′2″)] 5480 (18′0″) [5710 (18′9″)] D: Maximum Dumping Height mm (ft⋅in)
Page 214 SPECIFICATIONS ZX50U K (Left) K (Right) M1M7-12-008 ZX50U Category Item Canopy A: Maximum Digging Reach mm (ft⋅in) 6000 (19′8″) [6250 (20′6″)] B: Maximum Digging Depth mm (ft⋅in) 3600 (11′10″) [3860 (12′8″)] C: Maximum Cutting Height mm (ft⋅in) 5770 (18′11″) [6020 (19′9″)] 5640 (18′6″) [5870 (19′3″)] D: Maximum Dumping Height mm (ft⋅in) 4100 (13′5″)
Page 215: Shoe Types And Applications
SPECIFICATIONS SHOE TYPES AND APPLICATIONS ZX27U (Canopy) 300 mm (1′0″) 300 mm (1′0″) Shoe Width Rubber Shoe Grouser Shoe For Paved Road For Ordinary Ground Application (Standard) (Option) Operating Weight kg (lb) 2800 (6170) 2810 (6190) Minimum Ground 320 (1′1″) 310 (1′0″) Clearance mm (ft⋅in)
Page 216 SPECIFICATIONS ZX30U (Canopy) 300 mm (1′0″) 300 mm (1′0″) Shoe Width Rubber Shoe Grouser Shoe For Paved Road For Ordinary Ground Application (Standard) (Option) Operating Weight kg (lb) 3070 (6770) 3155 (6960) Minimum Ground 290 (11″) 280 (11″) Clearance mm (ft⋅in) Undercarriage 2100 (6′11″) 2120 (6′11″)
Page 217 SPECIFICATIONS ZX35U (Canopy) 300 mm (1′0″) 300 mm (1′0″) Shoe Width Rubber Shoe Grouser Shoe For Paved Road For Ordinary Ground Application (Standard) (Option) Operating Weight kg (lb) 3480 (7670) 3565 (7860) Minimum Ground 290 (11″) 280 (11″) Clearance mm (ft⋅in) Undercarriage 2100 (6′11″) 2120 (6′11″)
Page 218 SPECIFICATIONS ZX40U (Canopy) 400 mm (1′4″) 400 mm (1′4″) Shoe Width Rubber Shoe Grouser Shoe For Paved Road For Ordinary Ground Application (Standard) (Option) Operating Weight kg (lb) 4390 (9680) 4460 (9830) Minimum Ground 335 (1′1″) 315 (1′0″) Clearance mm (ft⋅in) Undercarriage 2540 (8′4″) 2490 (8′2″)
Page 219 SPECIFICATIONS ZX50U (Canopy) 400 mm (1′4″) 400 mm (1′4″) Shoe Width Rubber Shoe Grouser Shoe For Paved Road For Ordinary Ground Application (Standard) (Option) Operating Weight kg (lb) 4730 (10430) 4800 (10580) Minimum Ground 335 (1′1″) 315 (1′0″) Clearance mm (ft⋅in) Undercarriage 2540 (8′4″) 2490 (8′2″)
Page 220: Bucket Types And Applications
SPECIFICATIONS BUCKET TYPES AND APPLICATIONS ZX27U Bucket Width mm Front-End Attachment Bucket Capacity 1.17 m 1.47 m Bucket (With side cutter) (Without side cutter) (3′10″) (5′0″) ISO (Heaped) mm (in) mm (in) Hoe Bucket 0.050 (0.065) 350 (14″) 300 (12″) 0.060 (0.078) 400 (16″) 350 (14″)
Page 221 SPECIFICATIONS ZX30U Bucket Width mm Front-End Attachment Bucket Capacity 1.17 m 1.52 m Bucket (With side cutter) (Without side cutter) (3′10″) (5′0″) ISO (Heaped) mm (in) mm (in) Hoe Bucket 0.040 (0.052) 300 (12″) 250 (10″) 0.055 (0.072) 350 (14″) 300 (12″) 0.065 (0.085) 400 (16″)
Page 222 SPECIFICATIONS ZX35U Bucket Width mm Front-End Attachment Bucket Capacity 1.32 m 1.72 m Bucket (With side cutter) (Without side cutter) (4′4″) (5′8″) ISO (Heaped) mm (in) mm (in) Hoe Bucket 0.040 (0.052) 300 (12″) 250 (10″) 0.055 (0.072) 350 (14″) 300 (12″) 0.065 (0.085) 400 (16″)
Page 223 SPECIFICATIONS ZX40U , ZX50U Bucket Width mm Front-End Attachment Bucket Capacity ZX40U ZX50U (With side (Without Bucket 1.38 m 1.69 m 1.38 m 1.69 m cutter) side cutter) ISO (Heaped) (4′6″) (5′7″) (4′6″) (5′7″) mm (in) mm (in) Hoe Bucket 0.100 (0.13) 450 (18″) 400 (16″)
Page 224 SPECIFICATIONS MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................12-20...
Page 225: Reference
REFERENCE ADDITIONAL COUNTERWEIGHT The mass values of the additional counterweights are shown in the table below. Overhang from the end of Model Mass the base machine ZX27U 190 kg (420lb) 90 mm (3.5 in) ZX30U 190 kg (420lb) 90 mm (3.5 in) ZX35U 230 kg (510lb) 90 mm (3.5 in)
Page 226 REFERENCE MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................13-2...
Page 227 Consumable Parts List ........8-1 Operations ...........5-14 Control Lever Avoid Power Lines ..........S-17 (H-Pattern: HITACHI Excavator Pattern) ..5-2 Avoid Striking with Bucket .........5-13 Control Lever (ISO Excavator Pattern) ....5-1 Avoid Tipping ............ S-16 Control Lever (SAE-Backhoe Pattern) Avoid Undercutting ...........
Page 228: Index
INDEX Engine Oil Pressure Indicator......1-6 Never Undercut a High Bank ......S-16 Ensure Safety Before Rising From or Leaving Operator’s Seat....... S-5 Evacuating in Case of Fire........ S-28 Opening/Closing Cab Front Window (Cab-equipped machines)......1-19 Opening/Closing Engine Access Covers .... 7-3 Fast Travel Mode Indicator ........1-7 Opening/Closing Tank Covers ......
Page 229 INDEX Replace Pilot Filter Element ......7-30 Warming Up in Cold Weather ......5-9 Replace Re-circulation Filter ......7-63 Warn Others of Service Work ......S-22 Replace Rubber Crawler ........7-56 Wear Protective Clothing ........S-3 Replace Rubber Hoses Periodically ....S-25 Working Ranges..........12-6 Replace the Air Cleaner Element ......7-41 Replacing Fuses ..........7-50 Safety Signs............
Page 230 INDEX MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................14-4...

This manual is also suitable for:

Zx30u-2 Zx35u-2 Zx40u-2 Zx50u-2

Hitachi ZX27U-2 Operator's Manual

Machine Numbers

Safety Signs

Components Name

Operator's Station

Break-In

Operating the Engine

Driving the Machine

Operating the Machine

Transporting

Maintenance

Consumable Parts List

Maintenance under Special Environmental Conditions

Storage

Troubleshooting

Specifications

Reference

Index

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Summary of Contents for Hitachi ZX27U-2