Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Operational Principle Manual – PDF Download

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Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Operational Principle Manual

File Details:

Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Operational Principle Manual

• Manual Language:English
• Pages: 448 
• Size: 13.2 MB
• Format:PDF
• Downloadable:Yes

HITACHI ZX350LC-5B ZX350LCN-5B HYDRAULIC EXCAVATOR TECHNICAL OPERATIONAL PRINCIPLE MANUAL – PDF DOWNLOAD:

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Description:

Hitachi ZX350LC-5B ZX350LCN-5B Hydraulic Excavator Technical Operational Principle Manual

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-5B ZX350LCN-5B Hydraulic Excavator Technical Operational Principle Manual

TODDD-EN-01
..................................................................................................  1
INTRODUCTION..................................................................................................  3
SYMBOL AND ABBREVIATION.......................................................................................  5
SECTION AND GROUP CONTENTS....................................................................................  7
SECTION 1 GENERAL.............................................................................................  9
	Group 1 Specifications.................................................................................... 11
		Specifications........................................................................................ 11
		Working Ranges........................................................................................ 12
	Group 2 Component Layout.................................................................................. 13
		Main Component........................................................................................ 13
		Electrical System (Overview).......................................................................... 15
		Electrical System (Rear Tray)......................................................................... 16
		Electrical System (Switch Panel)...................................................................... 17
		Electrical System (Utility Space)..................................................................... 18
		Electrical System (Relays)............................................................................ 19
		Engine................................................................................................ 20
		Muffler Filter........................................................................................ 21
		Pump Device........................................................................................... 22
		Around Pump Device.................................................................................... 23
		Control Valve......................................................................................... 24
		Signal Control Valve.................................................................................. 24
		Swing Device.......................................................................................... 26
		Travel Device......................................................................................... 26
		5-Spool Solenoid Valve Unit........................................................................... 27
		2-Spool Solenoid Valve Unit (for Muffler Filter Regeneration Control)................................. 27
		Layout of Attachment Spec. Parts...................................................................... 28
	Group 3 Component Specifications.......................................................................... 33
		Engine................................................................................................ 33
		Engine Accessories.................................................................................... 37
		Hydraulic Component................................................................................... 39
		Electrical Component.................................................................................. 43
SECTION 2 SYSTEM.............................................................................................. 47
	Group 1 Controller........................................................................................ 49
		Outline............................................................................................... 49
		CAN Circuit........................................................................................... 50
	Group 2 Control System.................................................................................... 53
		Outline............................................................................................... 53
		Engine Control........................................................................................ 56
		Pump Control.......................................................................................... 90
		Valve Control (Standard)..............................................................................106
		Valve Control (Optional)..............................................................................128
		Other Control.........................................................................................136
	Group 3 ECM System........................................................................................147
		Outline...............................................................................................147
		Fuel Injection Control................................................................................148
		Fuel Injection Amount Correction Control..............................................................156
		EGR Control...........................................................................................158
		Preheating Control....................................................................................160
		Alarm Control.........................................................................................161
		Muffler Filter........................................................................................162
		Operation.............................................................................................163
		Muffler Filter Regenerative Control...................................................................164
	Group 4 Hydraulic System..................................................................................167
		Outline...............................................................................................167
		Pilot Circuit.........................................................................................168
		Main Circuit..........................................................................................180
		Fan Circuit...........................................................................................202
		Breaker/Pulverizer/Crusher Circuit (Optional).........................................................204
	Group 5 Electrical System.................................................................................215
		Outline...............................................................................................215
		Main Circuit..........................................................................................216
		Electric Power Circuit (Key Switch: OFF)..............................................................218
		CAN Circuit...........................................................................................220
		Accessory Circuit.....................................................................................222
		Starting Circuit (Key Switch: START)..................................................................224
		Charging Circuit (Key Switch: ON).....................................................................226
		Surge Voltage Prevention Circuit......................................................................230
		Pilot Shut-Off Circuit (Key Switch: ON)...............................................................232
		Auto Shut-Down Circuit................................................................................234
		Engine Stop Circuit...................................................................................236
		Monitor Circuit.......................................................................................239
		Security Circuit......................................................................................240
		Radio Circuit.........................................................................................242
		Air Conditioner Circuit...............................................................................242
		Accessory Circuit.....................................................................................245
		Work Light Circuit....................................................................................246
		Wiper/Washer Circuit..................................................................................248
		Cab Light Circuit.....................................................................................250
SECTION 3 COMPONENT OPERATION.................................................................................255
	Group 1 Pump Device.......................................................................................257
		Outline...............................................................................................257
		Main Pump.............................................................................................258
		Regulator.............................................................................................262
		Solenoid Valve........................................................................................284
		Pilot Pump............................................................................................286
		Pump Delivery Pressure Sensor.........................................................................286
		Pump Control Pressure Sensor..........................................................................286
	Group 2 Swing Device......................................................................................287
		Outline...............................................................................................287
		Swing Reduction Gear..................................................................................288
		Swing Motor...........................................................................................289
		Swing Parking Brake...................................................................................290
		Valve Unit............................................................................................292
	Group 3 Control Valve.....................................................................................305
		Outline...............................................................................................305
		Hydraulic Circuit.....................................................................................328
		Flow Combiner Valve...................................................................................334
		Main Relief Valve.....................................................................................336
		Overload Relief Valve (with Make-Up Function).........................................................340
		Regenerative Valve....................................................................................344
		Anti-Drift Valve......................................................................................354
		Flow Rate Control Valve...............................................................................358
		Digging Regenerative Valve............................................................................362
		Boom Lower Meter-In Cut Valve.........................................................................364
		Auxiliary Flow Combiner Valve and Bypass Shut-Out Valve...............................................366
	Group 4 Pilot Valve.......................................................................................371
		Outline...............................................................................................371
		Operation (Front Attachment / Swing and Travel Pilot Valves)..........................................373
		Operation (Auxiliary / Positioning Pilot Valve).......................................................381
		Shockless Function (Only for Travel Pilot Valve)......................................................386
	Group 5 Travel Device.....................................................................................387
		Outline...............................................................................................387
		Travel Reduction Gear.................................................................................388
		Travel Motor..........................................................................................390
		Parking Brake.........................................................................................392
		Travel Brake Valve....................................................................................394
		Overload Relief Valve.................................................................................398
		Travel Mode Control...................................................................................400
	Group 6 Signal Control Valve..............................................................................405
		Outline...............................................................................................405
		Pilot Port............................................................................................406
		Shuttle Valve.........................................................................................411
		Shockless Valve.......................................................................................414
		Pump 1 Flow Rate Control Valve, Pump 2 Flow Rate Control Valve, and Pump 3 Flow Rate Control Valve....418
		Flow Combiner Valve Control Spool, Swing Parking Brake Release Spool..................................420
	Group 7 Others (Upperstructure)...........................................................................421
		Pilot Shut-Off Solenoid Valve.........................................................................421
		Solenoid Valve........................................................................................423
		Fan Pump..............................................................................................427
		Fan Motor.............................................................................................428
		Fan Valve.............................................................................................429
		Hose Rupture Valve....................................................................................432
		Pilot Relief Valve....................................................................................438
		Recirculation Valve (Option)..........................................................................439
	Group 8 Others (Undercarriage)............................................................................441
		Swing Bearing.........................................................................................441
		Center Joint..........................................................................................442
		Track Adjuster (Front Idler Integrated Type)..........................................................443
SERVICE MANUAL REVISION REQUEST FORM..........................................................................447

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]