Hitachi ZX350LC-6 ZX350LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODDQ50-EN-00)
File Details:
Hitachi ZX350LC-6 ZX350LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODDQ50-EN-00)
- Manual Language:English
- Pages: 478
- Size: 20.4 MB
- Format:PDF
- Downloadable:Yes
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Description:
Hitachi ZX350LC-6 ZX350LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODDQ50-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 ZX350LC-6 ZX350LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODDQ50-EN-00)
TODDQ50-EN-00............................................................................................. 1 CONTENTS.................................................................................................. 3 INTRODUCTION.............................................................................................. 9 SYMBOL AND ABBREVIATION................................................................................... 11 SECTION AND GROUPCONTENTS................................................................................. 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 After treatment 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 (After treatment Device 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............................................................................... 47 Electrical Component.............................................................................. 51 SECTION 2 SYSTEM.......................................................................................... 55 Group 1 Controller.................................................................................... 57 Outline........................................................................................... 57 CAN Circuit....................................................................................... 58 Group 2 Control System................................................................................ 61 Outline........................................................................................... 61 Engine Control.................................................................................... 64 Pump Control...................................................................................... 96 Valve Control (Standard)..........................................................................120 Valve Control (Optional)..........................................................................140 Other Control.....................................................................................148 Group 3 Engine System.................................................................................159 ECM System........................................................................................159 Fuel Injection Control............................................................................160 Fuel Injection Amount Correction Control..........................................................168 EGR Control.......................................................................................170 Preheating Control................................................................................172 Variable Turbocharger Control.....................................................................173 Alarm Control.....................................................................................174 Urea SCR System...................................................................................175 Engine Output Restriction Control (INDUCEMENT)....................................................186 Aftertreatment Device.............................................................................190 Aftertreatment Device Regeneration Control........................................................192 Group 4 Hydraulic System..............................................................................195 Outline...........................................................................................195 Pilot Circuit.....................................................................................196 Main Circuit......................................................................................208 Fan Circuit.......................................................................................230 Breaker/Pulverizer/Crusher Circuit (Optional).....................................................232 Group 5 Electrical System.............................................................................243 Outline...........................................................................................243 Main Circuit......................................................................................244 Electric Power Circuit (Key Switch: OFF)..........................................................246 CAN Circuit.......................................................................................248 Accessory Circuit (Key Switch: ACC)...............................................................250 Starting Circuit (Key Switch: START)..............................................................252 Charging Circuit (Key Switch: ON).................................................................254 Surge Voltage Prevention Circuit..................................................................258 Pilot Shut-Off Circuit (Key Switch: ON)...........................................................260 Auto Shut-Down Circuit/Automatic Engine Stop Circuit at Low Temperature...........................262 Engine Stop Circuit...............................................................................264 Monitor Circuit...................................................................................267 Security Circuit..................................................................................268 Radio Circuit.....................................................................................270 Air Conditioner Circuit...........................................................................270 Accessory Circuit.................................................................................273 Work Light Circuit................................................................................274 Wiper/Washer Circuit..............................................................................276 Cab Light Circuit.................................................................................278 SECTION 3 COMPONENT OPERATION.............................................................................283 Group 1 Pump Device...................................................................................285 Outline...........................................................................................285 Main Pump.........................................................................................286 Regulator.........................................................................................290 Solenoid Valve....................................................................................314 Pilot Pump........................................................................................316 Pump Delivery Pressure Sensor.....................................................................316 Pump Control Pressure Sensor......................................................................316 Group 2 Swing Device..................................................................................317 Outline...........................................................................................317 Swing Reduction Gear..............................................................................318 Swing Motor.......................................................................................319 Swing Parking Brake...............................................................................320 Valve Unit........................................................................................322 Group 3 Control Valve.................................................................................335 Outline...........................................................................................335 Hydraulic Circuit.................................................................................358 Flow Combiner Valve...............................................................................364 Main Relief Valve.................................................................................366 Overload Relief Valve (with Make-Up Function).....................................................370 Regenerative Valve................................................................................374 Anti-Drift Valve..................................................................................384 Flow Rate Control Valve...........................................................................388 Digging Regenerative Valve........................................................................392 Boom Lower Meter-In Cut Valve.....................................................................394 Auxiliary Flow Combiner Valve and Bypass Shut-Out Valve...........................................396 Group 4 Pilot Valve...................................................................................401 Outline...........................................................................................401 Operation (Front Attachment/Swing and Travel Pilot Valves)........................................403 Operation (Auxiliary, Positioning Pilot Valves)...................................................411 Shockless Function (Only for Travel Pilot Valve)..................................................416 Group 5 Travel Device.................................................................................417 Outline...........................................................................................417 Travel Reduction Gear.............................................................................418 Travel Motor......................................................................................420 Parking Brake.....................................................................................422 Travel Brake Valve................................................................................424 Overload Relief Valve.............................................................................428 Travel Mode Control...............................................................................430 Group 6 Signal Control Valve..........................................................................435 Outline...........................................................................................435 Pilot Port........................................................................................436 Shuttle Valve.....................................................................................441 Shockless Valve...................................................................................444 Pump 1 Flow Rate Control Valve, Pump 2 Flow Rate Control Valve, Pump 3 Flow Rate Control Valve....448 Flow Combiner Valve Control Spool, Swing Parking Brake Release Spool..............................450 Group 7 Others (Upperstructure).......................................................................451 Pilot Shut-Off Solenoid Valve.....................................................................451 Solenoid Valve....................................................................................453 Fan Pump..........................................................................................457 Fan Motor.........................................................................................458 Fan Valve.........................................................................................459 Hose Rupture Valve................................................................................462 Pilot Relief Valve................................................................................468 Recirculation Valve...............................................................................469 Group 8 Others (Undercarriage)........................................................................471 Swing Bearing.....................................................................................471 Centerjoint.......................................................................................472 Track Adjuster (Front Idler Integrated Type)......................................................473 SERVICE MANUAL REVISION REQUEST FORM......................................................................477
Please Note:
⦁ This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
⦁ Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.