hitachi eh700 rigid dump truck service repair manual

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  • DISTRIBUTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADDRESS PHONE NO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    DLR/BRCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADDRESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    PHONE NO . . . . . . . . . . . . . . . SERVICE PHONE NO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    SPARE PARTS PHONE NO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    MACHINE: SERIAL NO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENGINE TYPE/NO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HYDRAULIC TRANSM. TYPE/NO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    STARTING KEY NO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAB KEY NO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    PRINTED IN U.S.A.

    PUBLICATION NO. 10218ENG.

    MANUAL SERVICE

    EH700/EH750

    10/01

    404TD

    EDITION 1

    HITACHI

  • EH700/EH750 GENERAL SERVICE INFORMATION FORM/PUBLICATION NO.

    GROUP TITLE

    PUBLICATION 10218

    GROUP 0

    10/01

    404TD

    091 Service Position and Safety SM867 Instructions

  • SERVICE POSITION AND SAFETY INSTRUCTIONS GROUP 091

    Page 1

    Form SM867

    SERVICE POSITION Before working on the machine, park it on a level surface and put it in the “SERVICE POSITION”

    EL18502EH700

    1. Engine stopped, ignition key removed (except when service requires engine operation).

    2. Do not operate tag or red warning flag on steering wheel.

    3. If body is raised, use body prop cable or pins.

    4. The wheels blocked. 5. Body electric control lever in the

    “FLOAT” position. 6. Parking brakes applied. 7. Allow the machine to cool down. 8. Pressure released from all lines,

    tanks, and accumulators.

    WARNING! If work must be done on a warm machine, beware of hot fluids and components.

  • GROUP 091 Page 2

    SERVICE POSITION AND SAFETY INSTRUCTIONS

    Form SM867

    A FEW SIMPLE RULES WHEN SERVICING

    TS41154

    Do not perform any work on themachine unless you are autho- rized to do so.

    Maintenance can be dangerous unless performed properly. Be satisfied that you have the necessary skill, information, correct tools, and equipment to do the job correctly.

    Standardmaintenance procedures should always be observed. Read the manufacturer’s manual or findassistance if you donot understand what you are doing.

    Read all nameplates and decals before you operate the ma- chine. Each nameplate and decal has important information about operation or service.

    Deflate tires before loosening any rim clamp bolts.

    Always stop the engine before removing inspection covers. Do not let tools or parts fall into the engine compartment opening.

    EL13914

    Standaway from the rear of themachinewhen theengine is run- ning.

    When running amachine indoors, besure thebuilding is proper- ly ventilated.

    Do not wear loose fitting clothing or jewelry when working on a machine.

    Always wear a hard hat, safety glasses, gloves, shoes, or other protective articles as the job requires.

    Before you work on the machine always lower the body. If you must work on themachine with the body raised, alwayssecurely support the body using the body prop cable.

    Be sure the “Body Prop Cable” is connected when working be- neath a raised dump body.

    EL18044

    Be sure themachine is in the SERVICEPOSITION before lifting themachine. Always support an elevated machine using proper blocks and/or cribbing before beginning work.

    When lifting or supporting components, use equipment with a weight capacity as great as or greater than the weight of the component..

    Use the correct tool(s) for the job. Repair or replace any broken or defective equipment or tools.

    Make sure that no tool(s) or other object(s) are left inside the machine where they may cause damage.

  • SERVICE POSITION AND SAFETY INSTRUCTIONS

    GROUP 091 Page 3

    Form SM867

    A FEW SIMPLE RULES WHEN SERVICING (cont’d)

    Release all system pressure slowly before working on any part of the hydraulic system.

    TS21481

    Remove all pressure caps carefully.

    Be careful of hot fluid when changing oil in the engine, hydraulic system, etc.

    To find leakage, use cardboard or wood, not your hand.

    Never adjust a pressure relief valve above the manufacturer’s recommendations.

    Always inspect the cooling system with the engine stopped.

    Check that there is no damage to electric wires and hoses.

    Check that there is no damage to hydraulic and brake hoses caused by chafing. Whenwires have been disconnected it is im- portant that they are clamped so they cannot be exposed to chafing.

    When performing any welding operation on amachine, turn the battery disconnect switch to the “OFF” position and disconnect the negative (--) and positive (+) wire connections at thebattery.

    EL13917

    When welding and cutting, the paint must be removed up to a distance of 10 cm (4 in) from the welding or cutting point. Paint which is subject to high temperature may cause harmful gases.

    The following safety instructions should be followed:

    Remove the paint from the area where work is to be per- formed through sand blasting.

    If the paint cannot be removed by sand blasting, it must be removed in some other way e.g., with paint stripper.

    Note: When using paint stripper, be sure to wear protective gloves and work in a well ventilated area.

    Note: A high speed grinding machine also heats the paint and must only be used in a well ventilated area.

    Polymer materials such as rubber and certain kinds of plastics can, when heated, give off gases that may be dangerous to health and environment.

    The following safety instructions should be followed:

    Do not weld or cut near polymer materials without first hav- ing protected them from the heat. Never burn polymer materials when scrapping them.

  • GROUP 091 Page 4

    SERVICE POSITION AND SAFETY INSTRUCTIONS

    Form SM867

    FIRE PREVENTION MEASURES

    Fire prevention features provided by the manufacturer should be maintained in operational condition and should be used to supplement operator’s fire prevention efforts. In no caseshould the features be usedor assumedas replacement for diligent op- erator efforts at preventing fires.

    Keep the workplace clean. Oil or water on the floormakes it slip- pery and dangerous in connection with electrical equipment or electrically powered tools. Oily clothes are a serious fire hazard.

    Keep the machine and all equipment free of dirt and oil. This will decrease possible fire hazards and make it easier to find loose or defective parts. This is especially important when working with combustible materials.

    Machines should be clean of debris particularly around the en- gine, exhaust, and driveshaft components. Keep the machine extra clean when working in a sensitive environment.

    V50389A

    Note: If a high pressure jet isused for cleaning, takegreat careas the insulation of electrical wires can become damaged even at moderately high pressure and temperature. Pro- tect electrical wires in a suitable way.

    Gasoline is highly flammable and should never be used as a cleaning fluid. Use an approved solvent for cleaning.

    Some solvents can cause skin rashes and or fire dangers. Do not inhale solvent vapors.

    Store flammable starting aids in a cool, well ventilated location.

    Smoking, open flames, etc., should not bepermitted aroundany machine during fueling operations and/or when the fuel system is open to the atmosphere.

    Prior to welding or brazing on any part of the machine, the part and the surrounding area should be cleaned and a fire extin- guisher should be made readily available.

    Hydraulic fluid is flammable. Do not weld on pipes or tubes that are filled with fluid. Be carefulwhen weldingnext to filled pipes or tubes.

    There is always a risk of fire. Find out which type of fire extin- guisher to use, where it is and how to use it.

    In case of fire be prepared to run for safety, but if time permits first:

    Lower body. Stop the engine. Start combating the fire and/or call for help.

  • EH700/EH750 SERVICE AND OPERATOR’S INDEX FORM/PUBLICATION NO.

    GROUP TITLE

    PUBLICATION 10218

    GROUP 1

    10/01

    404TD

    161 Automatic Centralized Lubrication SM481R1 161 Centralized Lubrication SM756R1 170 Machine Specifications SM880 179 Special Tools SM469R4

  • AUTOMATIC CENTRALIZED LUBRICATION SYSTEM

    GROUP 161 Page 1

    Form SM481R1

    .

    EL18618

    Figure 1 -- Automatic Centralized Lubrication System, Model View

    1. Electric Pump Station 4. Secondary Valve #4 2. Master Valve 5. Secondary Valve #2 3. Secondary Valve #1 6. Secondary Valve #3