Hitachi Industrial Manual - Technical and Workshop Guide (EN)

INTRODUCTION TO THE READER This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine. Be sure to thoroughly read this manual for cor- rect product information and service procedures. If you have any questions or comments, at if you found any errors regarding the contents of this manual, please contact using “Service Manual Revision Request Form” at the end of this man- ual. (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 E-mail:

dc@hitachi-kenki.com ADDITIONAL REFERENCES Please refer to the other materials (operator’s manual, parts catalog, engine technical material and Hitachi training material etc.) in addition to this manual. MANUAL COMPOSITION This manual consists the Technical Manual and the Workshop Manual. Information included in the Technical Manual: technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures. Information included in the Workshop Manual:

technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal/installation and assem- ble/disassemble procedures. PAGE NUMBER Each page has a number, located on the center lower part of the page, and each number contains the following information: Example : T 1-3-5 Consecutive Page Number for Each Group Group Number Section Number T: Technical Manual W: Workshop Manual IN-01

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INTRODUCTION SAFETY ALERT SYMBOL AND HEADLINE NOTATIONS In this manual, the following safety alert symbol and signal words are used to alert the reader to the potential for personal injury of machine damage. CAUTION: Indicated potentially hazardous situation which could, if not avoided, result in personal injury or death. IMPORTANT: Indicates a situation which, if not conformed to the instructions, could result in damage to the machine. This is the safety alert symbol. When you see this symbol, be alert to the potential for personal injury. Never fail to follow the safety instructions prescribed along with the safety alert symbol.

The safety alert symbol is also used to draw attention to component/part weights. To avoid injury and damage, be sure to use appropri- ate lifting techniques and equipment when lifting heavy parts. NOTE: Indicates supplementary technical information or know-how. UNITS USED SI Units (International System of Units) are used in this manual. MKSA system units and English units are also indicated in parenthheses just behind SI units. Example : 24.5 MPa (250 kgf/cm 2 , 3560 psi) A table for conversion from SI units to other system units is shown below for reference purposees.

IN-02 Quantity To Convert From Into Multiply By Quantity To Convert From Into Multiply By Length mm in 0.03937 Pressure MPa kgf/cm2 10.197 mm ft 0.003281 MPa psi 145.0 Volume L US gal 0.2642 Power kW PS 1.360 L US qt 1.057 kW HP 1.341 m3 yd3 1.308 Temperature °C °F °C×1.8+32 Weight kg lb 2.205 Velocity km/h mph 0.6214 Force N kgf 0.10197 min-1 rpm 1.0 N lbf 0.2248 Flow rate L/min US gpm 0.2642 Torque N⋅m kgf⋅m 1.0197 mL/rev cc/rev 1.0 N⋅m lbf⋅ft 0.7375

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SAFETY RECOGNIZE SAFETY INFORMATION These are the SAFETY ALERT SYMBOLS . When you see these symbols on your machine or in operator`s manual, be alert to the potential for personal injury. Follow recommended precautions and safe oper- ating practices. 001-E01A-0001 SA-688 UNDERSTAND SIGNAL WORDS On machine safety signs, signal words designating the degree or level of hazard - DANGER, WARNING, or CAUTION - are used with the safety alert symbol. DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. DANGER or WARNING safety signs are located near specific hazards. General precautions are listed on CAUTION safety signs . Some safety signs don’t use any of the desig- nated signal words above after the safety alert symbol are occasionally used on this machine. To avoid confusing machine protection with per- sonal safety messages, a signal word IMPOR- TANT indicates a situation which, if not avoided, could result in damage to the machine. SA-1223 NOTE indicates an additional explanation for an element of information. 002-E01A-1223 SA-1

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SAFETY FOLLOW SAFETY INSTRUCTIONS Carefully read and follow all safety signs on the machine and all safety messages in operator`s manual. Safety signs should be installed, maintained and replaced when necessary. If a safety sign or operator`s manual is damaged or missing, order a replacement from your au- thorized dealer in the same way you order other replacement parts (be sure to state machine model and serial number when ordering). Learn how to operate the machine and its controls correctly and safely. Allow only trained, qualified, authorized personnel to operate the machine. Keep your machine in proper working condition.

Unauthorized modifications of the machine may impair its function and/or safety and affect ma- chine life. Do not modify any machine parts without au- thorization. Failure to do so may deteriorate the part safety, function, and/or service life. In addition, personal accident, machine trouble, and/or damage to material caused by unauthorized modifications will void Hitachi Warranty Policy. Do not use attachments and/or optional parts or equipment not authorized by Hitachi. Failure to do so may deteriorate the safety, function, and/or service life of the machine.

In addition, personal accident, machine trouble, and/or damage to material caused by using unauthorized attach- ments and/or optional parts or equipment will void Hitachi Warranty Policy. The safety messages in this SAFETY chapter are intended to illustrate basic safety procedures of machines. However it is impossible for these safety messages to cover every hazardous situation you may encounter. If you have any questions, you should first consult your supervisor and/or your au- thorized dealer before operating or performing maintenance work on the machine. SA-003 003-E01B-0003 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 at- tached on the fire extinguisher to use it properly. To ensure that a fire-extinguisher can be always used when necessary, check and service the fire-extinguisher at the recommended intervals as specified in the fire-extinguisher manual. Establish emergency procedure guidelines to cope with fires and accidents. Keep emergency numbers for doctors, ambu- lance service, hospital, and fire department posted near your telephone. 004-E01A-0437 SA-437 SA-2

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