Hitachi ZX250LC-6 ZX250LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODC150-EN-00) – PDF Download

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Hitachi ZX250LC-6 ZX250LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODC150-EN-00)

File Details:

Hitachi ZX250LC-6 ZX250LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODC150-EN-00)

• Manual Language:English
• Downloadable:Yes
• Pages: 472
• Size: 19.6 MB
• Format:PDF

HITACHI ZX250LC-6 ZX250LCN-6 HYDRAULIC EXCAVATOR TECHNICAL OPERATIONAL PRINCIPLE MANUAL (TODC150-EN-00) – PDF DOWNLOAD:

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Description:

Hitachi ZX250LC-6 ZX250LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODC150-EN-00)

• 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 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 ZX250LC-6 ZX250LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODC150-EN-00)

TODC150-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 (Aftertreatment 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................................................................................... 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.......................................................................................... 96
		Valve Control (Standard)..............................................................................120
		Valve Control (Optional)..............................................................................138
		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
		Breaker/Pulverizer/Crusher Circuit (Optional).........................................................230
	Group 5 Electrical System.................................................................................241
		Outline...............................................................................................241
		Main Circuit..........................................................................................242
		Electric Power Circuit (Key Switch: OFF)..............................................................244
		CAN Circuit...........................................................................................246
		Accessory Circuit (Key Switch: ACC)...................................................................248
		Starting Circuit (Key Switch: START)..................................................................250
		Charging Circuit (Key Switch: ON).....................................................................252
		Surge Voltage Prevention Circuit......................................................................256
		Pilot Shut-Off Circuit (Key Switch: ON)...............................................................258
		Auto Shut-Down Circuit/Automatic Engine Stop Circuit at Low Temperature...............................260
		Engine Stop Circuit...................................................................................262
		Monitor Circuit.......................................................................................265
		Security Circuit......................................................................................266
		Radio Circuit.........................................................................................268
		Air Conditioner Circuit...............................................................................268
		Accessory Circuit.....................................................................................271
		Work Light Circuit....................................................................................272
		Wiper/Washer Circuit..................................................................................274
		Wiper Circuit.........................................................................................274
		Cab Light Circuit.....................................................................................276
SECTION 3 COMPONENT OPERATION.................................................................................281
	Group 1 Pump Device.......................................................................................283
		Outline...............................................................................................283
		Main Pump.............................................................................................284
		Regulator.............................................................................................288
		Solenoid Valve........................................................................................312
		Pilot Pump............................................................................................314
		Pump Delivery Pressure Sensor.........................................................................314
		Pump Control Pressure Sensor..........................................................................314
	Group 2 Swing Device......................................................................................315
		Outline...............................................................................................315
		Swing Reduction Gear..................................................................................316
		Swing Motor...........................................................................................317
		Swing Parking Brake...................................................................................318
		Valve Unit............................................................................................320
	Group 3 Control Valve.....................................................................................333
		Outline...............................................................................................333
		Hydraulic Circuit.....................................................................................356
		Flow Combiner Valve...................................................................................362
		Main Relief Valve.....................................................................................364
		Overload Relief Valve (with Make-Up Function).........................................................368
		Regenerative Valve....................................................................................372
		Anti-Drift Valve......................................................................................382
		Flow Rate Control Valve...............................................................................386
		Digging Regenerative Valve............................................................................390
		Boom Lower Meter-In Cut Valve.........................................................................392
		Auxiliary Flow Combiner Valve and Bypass Shut-Out Valve...............................................394
	Group 4 Pilot Valve.......................................................................................399
		Outline...............................................................................................399
		Operation (Front Attachment/Swing and Travel Pilot Valves)............................................401
		Operation (Auxiliary, Positioning Pilot Valve)........................................................409
		Shockless Function (Only for Travel Pilot Valve)......................................................414
	Group 5 Travel Device.....................................................................................415
		Outline...............................................................................................415
		Travel Reduction Gear.................................................................................416
		Travel Motor..........................................................................................418
		Parking Brake.........................................................................................420
		Travel Brake Valve....................................................................................422
		Overload Relief Valve.................................................................................426
		Travel Mode Control...................................................................................428
	Group 6 Signal Control Valve..............................................................................433
		Outline...............................................................................................433
		Pilot Port............................................................................................434
		Shuttle Valve.........................................................................................439
		Shockless Valve.......................................................................................442
		Pump 1 Flow Rate Control Valve, Pump 2 Flow Rate Control Valve, and Pump 3 Flow Rate Control Valve....446
		Flow Combiner Valve Control Spool, Swing Parking Brake Release Spool..................................448
	Group 7 Others (Upperstructure)...........................................................................449
		Pilot Shut-Off Solenoid Valve.........................................................................449
		Solenoid Valve........................................................................................451
		Hose Rupture Valve....................................................................................456
		Pilot Relief Valve....................................................................................462
		Recirculation Valve ..................................................................................463
	Group 8 Others (Undercarriage)............................................................................465
		Swing Bearing.........................................................................................465
		Centerjoint...........................................................................................466
Track Adjuster (Front Idler Integrated Type)..................................................................467
SERVICE MANUAL REVISION REQUEST FORM..........................................................................471

Please Note:

⦁ This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
⦁ This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
⦁ Require some other service manual or have any queries: please WRITE to us at [email protected]