Hitachi ZX350LC-6 ZX350LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODDQ50-EN-00) – PDF Download

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Hitachi ZX350LC-6 ZX350LCN-6 Hydraulic Excavator Technical Operational Principle Manual (TODDQ50-EN-00)

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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

HITACHI ZX350LC-6 ZX350LCN-6 HYDRAULIC EXCAVATOR TECHNICAL OPERATIONAL PRINCIPLE MANUAL (TODDQ50-EN-00) – PDF DOWNLOAD:

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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.