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(Note: Do not tear off the form. Copy it for us- age.): Publications Marketing & Product Support Hitachi Construction Machinery Co. Ltd. TEL: 81-29-832-7084 FAX: 81-29-831-1162 ADDITIONAL REFERENCES • • The Engine Manual Please refer to the materials listed below in addition •...
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INTRODUCTION SAFETY ALERT SYMBOL AND HEADLINE NOTATIONS In this manual, the following safety alert symbol and • CAUTION: signal words are used to alert the reader to the Indicated potentially hazardous situation which potential for personal injury of machine damage. could, if not avoided, result in personal injury or death.
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. 001-E01A-0001 SA-688 UNDERSTAND SIGNAL WORDS...
Hitachi Warranty Policy. • Do not use attachments and/or optional parts or equip- ment not authorized by Hitachi. Failure to do so may deteriorate the safety, function, and/or service life of the machine. In addition, personal accident, machine trouble,...
SAFETY PREPARE FOR EMERGENCIES • Be prepared if a fire starts or if an accident occurs. • Keep a first aid kit and fire extinguisher on hand. • Thoroughly read and understand the label attached on the fire extinguisher to use it properly. •...
SAFETY INSPECT MACHINE • Inspect your machine carefully each day or shift by walking around it before you start it to avoid personal injury. • In the walk-around inspection be sure to cover all points described in the “PRE-START INSPECTION” chapter in the operator’s manual.
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. •...
SAFETY FASTEN YOUR SEAT BELT • If the machine should overturn, the operator may become injured and/or thrown from the cab. Additionally the opera- tor may be crushed by the overturning machine, resulting in serious injury or death. • Prior to operating the machine, thoroughly examine web- bing, buckle and attaching hardware.
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 track or on ground.
SAFETY PRECAUTIONS FOR OPERATIONS • Investigate the work site before starting operations. • Be sure to wear close fitting clothing and safety equip- ment appropriate for the job, such as a hard hat, etc. when operating the machine. • Clear all persons and obstacles from area of operation and machine movement.
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 fall- ing and to prevent the ground, stockpiles, or banks from collapsing.
SAFETY EQUIPMENT OF HEAD GUARD, ROPS, FOPS In case the machine is operated in areas where the possibility of falling stones or debris exist, equip a head guard, ROPS, or FOPS according to the potential hazardous conditions. (The standard cab for this machine corresponds to ROPS and FOPS.) ROPS: Roll-Over Protective Structure FOPS: Falling Object Protective Structure SA-686...
SAFETY DRIVE MACHINE SAFELY • Before driving the machine, always confirm that the steer- ing wheel/forward/reverse switch 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.
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: •...
SAFETY KEEP PERSON CLEAR FROM WORKING AREA • A person may be hit severely by the swinging front attach- ment or counterweight and/or may be crushed against an other object, resulting in serious injury or death. • Keep all persons clear from the area of operation and machine movement.
SAFETY AVOID TIPPING DO NOT ATTEMPT TO JUMP CLEAR OF TIPPING MA- CHINE---SERIOUS OR FATAL CRUSHING INJURIES WILL RESULT MACHINE WILL TIP OVER FASTER THAN YOU CAN JUMP FREE FASTEN YOUR SEAT BELT • The danger of tipping is always present when operating on a grade, possibly resulting in serious injury or death.
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.
SAFETY AVOID POWER LINES • Serious injury or death can result if the machine or front at- tachments are not kept a safe distance from electric lines. • When operating near an electric line, NEVER move any part of the machine or load closer than 3 m plus twice the line insulator length.
SAFETY PROTECT AGAINST FLYING DEBRIS • If flying debris hit eyes or any other part of the body, serious injury may result. • Guard against injury from flying pieces of metal or debris; wear goggles or safety glasses. • Keep bystanders away from the working area before strik- ing any object.
SAFETY TRANSPORT SAFELY • Take care the machine may turn over when loading or un- loading the machine onto or off of a truck or trailer. • Observe the related regulations and rules for safe trans- portation. • Select an appropriate truck or trailer for the machine to be transported.
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. •...
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. In case the light bulb is broken, spilled fuel, oil, antifreeze fluid, or window washer fluid may catch fire.
SAFETY PREVENT PARTS FROM FLYING • Travel reduction gears are under pressure. • As pieces may fly off, be sure to keep body and face away from AIR RELEASE PLUG to avoid injury. • GEAR OIL is hot. Wait for GEAR OIL to cool, then gradually loosen AIR RELEASE PLUG to release pressure.
SAFETY PREVENT BURNS Hot spraying fluids: • After operation, engine coolant is hot and under pressure. Hot water or steam is contained in the engine, radiator and heater lines. Skin contact with escaping hot water or steam can cause severe burns. •...
SAFETY AVOID HIGH-PRESSURE FLUIDS • Fluids such as diesel fuel or hydraulic oil under pressure can penetrate the skin or eyes causing serious injury, blindness or death. • Avoid this hazard by relieving pressure before disconnect- ing hydraulic or other lines. •...
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.
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. •...
SAFETY AVOID HEATING NEAR PRESSURIZED FLUID LINES • Flammable spray can be generated by heating near pres- surized 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.
• Keep bystanders out of the work site during operation. • Asbestos might be present in imitation parts. Use only SA-029 genuine Hitachi Parts. PREVENT BATTERY EXPLOSIONS • Battery gas can explode. • Keep sparks, lighted matches, and flame away from the top of battery.
• Improperly disposing of waste can threaten the environ- ment and ecology. Potentially harmful waste used with HITACHI equipment includes such items as oil, fuel, coolant, 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.
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SAFETY BEFORE RETURNING THE MACHINE TO THE CUS- TOMER • After maintenance or repair work is complete, confirm that: • The machine is functioning properly, especially the safety systems. • Worn or damaged parts have been repaired or replaced S517-E01A-0435 SA-435 SA-29 WCGB-E-00(2160219)
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Group 8 Solenoid Valve Group 9 Transmission Changeover Solenoid Valve Group 10 Propeller Shaft SECTION 4 FRONT ATTACHMENT Group 1 Front Attachment COPYRIGHT(C)2007 Hitachi Construction Machinery Co., Ltd. Group 2 Cylinder Tokyo, Japan All rights reserved Group 3 Hose-Rupture Valve WCGB-E-00(2160219)
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TECHNICAL MANUAL (Operational Principle) SECTION 1 GENERAL SECTION 3 COMPONENT OPERATION Group 1 Specifications Group 1 Pump Device Group 2 Component Layout Group 2 Swing Device Group 3 Component Specifications Group 3 Control Valve SECTION 2 SYSTEM Group 4 Pilot Valve Group 1 Controller Group 5 Electric Lever Group 2 Control System...
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SECTION 1 GENERAL — CONTENTS — Group 1 Precautions for Disassembling and Assembling Precautions for Disassembling and Assembling ..........W1-1-1 Maintenance Standard Terminology ..W1-1-7 Group 2 Tightening Tightening Torque Specifications ....W1-2-1 Torque Chart..........W1-2-3 Piping Joint ..........W1-2-6 Periodic Replacement of Parts ....
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GENERAL / Precautions for Disassembling and Assembling PRECAUTIONS DISASSEMBLING AND ASSEMBLING Precautions for Disassembling and Assembling • • Clean the Machine Precautions for Disassembling • To prevent dirt from entering, cap or plug the Thoroughly wash the machine before bringing it into the shop.
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GENERAL / Precautions for Disassembling and Assembling • Precautions for Assembling Bleeding Air from Hydraulic System • Be sure to clean all parts and inspect them for When hydraulic oil is drained, the suction filter or the any damage. If any damage is found, repair or suction lines are replaced, or the removal and in- replace part.
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