Hitachi ZX300LC-6 ZX300LCN-6 Hydraulic Excavator Operational Principle Technical Manual (TODDN50-EN-00)
File Details:
Hitachi ZX300LC-6 ZX300LCN-6 Hydraulic Excavator Operational Principle Technical Manual (TODDN50-EN-00)
- Manual Language:English
- Pages: 470
- Size: 19.7 MB
- Format:PDF
- Downloadable:Yes
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Description:
Hitachi ZX300LC-6 ZX300LCN-6 Hydraulic Excavator Operational Principle Technical Manual (TODDN50-EN-00)
To The Reader
This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine. The machine specification and description according to destination may be explained on this manual.
Be sure to thoroughly read this manual for correct 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 manual.
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, the Workshop Manual and the Engine 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 assemble / disassemble procedures.
Information included in the Engine Manual: Technical information needed for redelivery and delivery and maintenance and repair of the machine, operation and activation of all devices and systems, troubleshooting and assemble / disassemble procedures.
Table Of Contents:
Hitachi ZX300LC-6 ZX300LCN-6 Hydraulic Excavator Operational Principle Technical Manual (TODDN50-EN-00)
TODDN50-EN-00............................................................................................. 1 CONTENTS.................................................................................................. 3 INTRODUCTION.............................................................................................. 9 SYMBOL AND ABBREVIATION................................................................................... 11 SECTION AND GROUP CONTENTS................................................................................ 13 SECTION 1 GENERAL......................................................................................... 15 Group 1 Specifications................................................................................ 17 Specifications.................................................................................... 17 Working Ranges.................................................................................... 18 Group 2 Component Layout.............................................................................. 19 Main Component.................................................................................... 19 Electrical System (Overview)...................................................................... 21 Electrical System (Rear Tray)..................................................................... 22 Electrical System (Switch Panel).................................................................. 23 Electrical System (Utility Space)................................................................. 24 Electrical System (Relays)........................................................................ 25 Engine............................................................................................ 26 Aftertreatment Device............................................................................. 27 Pump Device....................................................................................... 28 Around Pump Device................................................................................ 29 Control Valve..................................................................................... 30 Signal Control Valve.............................................................................. 30 Swing Device...................................................................................... 32 Travel Device..................................................................................... 32 5-Spool Solenoid Valve Unit....................................................................... 33 2-Spool Solenoid Valve Unit (AftertreatmentDevice Regeneration Control)........................... 33 DEF Tank.......................................................................................... 34 DEF Supply Module................................................................................. 34 Layout of Attachment Spec. Parts.................................................................. 36 Group 3 Component Specifications...................................................................... 41 Engine............................................................................................ 41 Engine Accessories................................................................................ 45 Hydraulic Component............................................................................... 46 Electrical Component.............................................................................. 50 SECTION 2 SYSTEM.......................................................................................... 53 Group 1 Controller.................................................................................... 55 Outline........................................................................................... 55 CAN Circuit....................................................................................... 56 Group 2 Control System................................................................................ 59 Outline........................................................................................... 59 Engine Control.................................................................................... 62 Pump Control...................................................................................... 94 Valve Control (Standard)..........................................................................118 Valve Control (Optional)..........................................................................136 Other Control.....................................................................................146 Group 3 Engine System.................................................................................157 ECM System........................................................................................157 Fuel Injection Control............................................................................158 Fuel Injection Amount Correction Control..........................................................166 EGR Control.......................................................................................168 Preheating Control................................................................................170 Variable Turbocharger Control.....................................................................171 Alarm Control.....................................................................................172 Urea SCR System...................................................................................173 Engine Output Restriction Control (INDUCEMENT)....................................................184 Aftertreatment Device.............................................................................188 Aftertreatment Device Regeneration Control........................................................190 Group 4 Hydraulic System..............................................................................193 Outline...........................................................................................193 Pilot Circuit.....................................................................................194 Main Circuit......................................................................................206 Breaker/Pulverizer/Crusher Circuit (Optional).....................................................228 Group 5 Electrical System.............................................................................239 Outline...........................................................................................239 Main Circuit......................................................................................240 Electric Power Circuit (Key Switch: OFF)..........................................................242 CAN Circuit.......................................................................................244 Accessory Circuit (Key Switch: ACC)...............................................................246 Starting Circuit (Key Switch: START)..............................................................248 Charging Circuit (Key Switch: ON).................................................................250 Surge Voltage Prevention Circuit..................................................................254 Pilot Shut-Off Circuit (Key Switch: ON)...........................................................256 Auto Shut-Down Circuit/Automatic Engine Stop Circuit at Low Temperature...........................258 Engine Stop Circuit...............................................................................260 Monitor Circuit...................................................................................263 Security Circuit..................................................................................264 Radio Circuit.....................................................................................266 Air Conditioner Circuit...........................................................................266 Accessory Circuit.................................................................................269 Work Light Circuit................................................................................270 Wiper/Washer Circuit..............................................................................272 Wiper Circuit.....................................................................................272 Cab Light Circuit.................................................................................274 SECTION 3 COMPONENT OPERATION.............................................................................279 Group 1 Pump Device...................................................................................281 Outline...........................................................................................281 Main Pump.........................................................................................282 Regulator.........................................................................................286 Solenoid Valve....................................................................................310 Pilot Pump........................................................................................312 Pump Delivery Pressure Sensor.....................................................................312 Pump Control Pressure Sensor......................................................................312 Group 2 Swing Device..................................................................................313 Outline...........................................................................................313 Swing Reduction Gear..............................................................................314 Swing Motor.......................................................................................315 Swing Parking Brake...............................................................................316 Valve Unit........................................................................................318 Group 3 Control Valve.................................................................................331 Outline...........................................................................................331 Hydraulic Circuit.................................................................................354 Flow Combiner Valve...............................................................................360 Main Relief Valve.................................................................................362 Overload Relief Valve (with Make-Up Function).....................................................366 Regenerative Valve................................................................................370 Anti-Drift Valve..................................................................................380 Flow Rate Control Valve...........................................................................384 Digging Regenerative Valve........................................................................388 Boom Lower Meter-In Cut Valve.....................................................................390 Auxiliary Flow Combiner Valve and Bypass Shut-Out Valve...........................................392 Group 4 Pilot Valve...................................................................................397 Outline...........................................................................................397 Operation (Front Attachment/Swing and Travel Pilot Valves)........................................399 Operation (Auxiliary, Positioning Pilot Valves)...................................................407 Shockless Function (Only for Travel Pilot Valve)..................................................412 Group 5 Travel Device.................................................................................413 Outline...........................................................................................413 Travel Reduction Gear.............................................................................414 Travel Motor......................................................................................416 Parking Brake.....................................................................................418 Travel Brake Valve................................................................................420 Overload Relief Valve.............................................................................424 Travel Mode Control...............................................................................426 Group 6 Signal Control Valve..........................................................................431 Outline...........................................................................................431 Pilot Port........................................................................................432 Shuttle Valve.....................................................................................437 Shockless Valve...................................................................................440 Pump 1 Flow Rate Control Valve, Pump 2 Flow Rate Control Valve, Pump 3 Flow Rate Control Valve....444 Flow Combiner Valve Control Spool, Swing Parking Brake Release Spool..............................446 Group 7 Others (Upperstructure).......................................................................447 Pilot Shut-Off Solenoid Valve.....................................................................447 Solenoid Valve....................................................................................449 Hose Rupture Valve................................................................................454 Pilot Relief Valve................................................................................460 Recirculation Valve ..............................................................................461 Group 8 Others (Undercarriage)........................................................................463 Swing Bearing.....................................................................................463 Centerjoint.......................................................................................464 Track Adjuster (Front Idler Integrated Type)......................................................465 SERVICE MANUAL REVISION REQUEST FORM......................................................................469
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