Hitachi EX300 EX330 EX370 Excavator Workshop Repair Service Manual PDF Download - MHITEX300OPES.zip

A full factory-level service and repair guide, complete with electrical wiring diagrams, covering the Hitachi EX300, EX330, EX330, EX370 Excavators — packed with the workshop detail needed to maintain, troubleshoot, overhaul, and service these machines the way professional technicians do.

Inside the Hitachi EX300, EX330, EX330, EX370 Excavators workshop service repair manual you'll find:

* Numbered table of contents easy to use so that you can find the information you need fast.

* Detailed sub-steps expand on repair procedure information

* Numbered instructions guide you through every repair procedure step by step.

* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.

* Notes, cautions and warnings throughout each chapter pinpoint critical information.

* Bold figure number help you quickly match illustrations with instructions.

* Detailed illustrations, drawings and photos guide you through every procedure.

* Enlarged inset helps you identify and examine parts in detail.

Total Pages: 6,332 pages

File Format: PDF (bookmarked, ToC, Searchable, Printable, high quality)

Language: English

MANUAL LIST:

TO140E-01 - Hitachi EX300-3C Excavator Technical Manual (Operational Principle).pdf

TT140E-01 - Hitachi EX300-3C Excavator Technical Manual (Troubleshooting).pdf

W140E-01 - Hitachi EX300-3C Excavator Workshop Manual.pdf

T173E00 - Hitachi EX300-5, EX300LC-5, EX330LC-5, EX330H-5, EX330LCH-5, EX370-5, EX370HD-5 Excavator Technical Manual (Service & Repair)

T173E00CIR - Hitachi EX300-5, EX300LC-5, EX330LC-5, EX330H-5, EX330LCH-5, EX370-5, EX370HD-5 Excavator Electrical Circuit Diagram

EM1H1NA11 - Hitachi EX330LC-5, EX370-5 Hydraulic Excavator Operator's Manual.pdf

EM1H1NA21 - Hitachi EX330LC-5, EX370-5 Hydraulic Excavator Operator's Manual.pdf

EM15K12 - Hitachi EX300-2, EX300LC-2, EX300H-2, EX300LCH-2 Excavator Operator's Manual.pdf

EM15KNA11 - Hitachi EX300-2, EX300LC-2, EX300H-2, EX300LCH-2 Excavator Operator's Manual.pdf

EM15912 - Hitachi EX300, EX300LC Hydraulic Excavator Operation Manual.pdf

KM110E01 - Hitachi EX300-2, EX300LC-2, EX300H-2, EX300LCH-2 Excavator Technical Manual (Service & Repair).pdf

KM140E00 - Hitachi EX300-3, EX300LC-3 Excavator Technical Manual (Service & Repair).pdf

KM10300 - Hitachi EX300, EX300LC Excavator Technical Manual (Service & Repair).pdf

W173ENA - Hitachi EX330LC-5, EX370-5 Hydraulic Excavator Workshop Manual.pdf

Table of Contents

TM.....11

INDEX.....11

Cover.....11

Introduction.....12

Safty.....14

T1.....40

CONTENTS(173T-1-1).....40

SECTION 1 GENERAL.....40

Group 1 Specification.....42

Specifications.....42

Working Range and Machine Dimensions for Transportation.....45

Component Specifications.....48

Group 2 Component Layout.....54

Main Components.....54

Electrical System (Overall System).....55

Electrical System (Relays).....56

Electrical System (Monitor and Switch Panels).....57

Other Components.....58

T2.....60

CONTENTS(173T-2-1).....60

SECTION 2 SYSTEM.....60

Group 1 Control System.....62

Outline.....62

Engine Control.....63

Pump Control.....70

Valve Control.....71

Other Control Function.....75

Group 2 Hydraulic System.....76

Main Circuit.....76

Pilot Circuit.....77

Neutral Circuit.....79

Single Actuator Operation.....79

Combined Operation.....81

Group 3 Electrical System.....86

Outline.....86

Electric Power Circuit.....87

Bulb Check Circut.....88

Accessory Cirucuit.....89

Preheat Circuit.....90

Starting Circuit.....91

Charging Circuit.....93

Surge Voltage Prevention Circuit.....96

Engine Stop Circuit.....97

T3.....98

CONTENTS(173T-3-1).....98

SECTION 3 COMPONENT OPERATION.....98

Group 1 Pump Device.....100

Outline.....100

Main Pump.....101

Regulator.....103

Pilot Pump.....110

N Sensor.....110

Pump Delevery Pressure Sensor.....110

Group 2 Swing Device.....112

Outline.....112

Swing Motor.....113

Swing Parking Brake.....114

Valve Unit.....115

Swing Reduction Gear.....117

Group 3 Control Valve.....118

Outline.....118

Hydraulic Circuit.....123

Flow Combiner Valve.....127

Pump Control Valve.....129

Main Relief Valve.....131

Overload Relief Valve.....132

Arm Regenerative Valve.....133

Boom Regenerative Valve.....135

Arm Anti-Drift Valve (Bottom Side).....137

Arm Anti-Drift Valve (On Rod Side)/Boom Anti-Drift Valve.....140

Bucket Flow Rate Control Valve.....141

Travel Flow Rate Control Valve.....143

Bypass Shut-Out Valve.....145

Needle Valve.....147

Group 4 Pilot Valve.....148

Outline.....148

Operation.....149

Group 5 Travel Device.....158

Outline.....158

Travel Motor.....159

Parking Brake.....161

Travel Speed Control.....163

Travel Brake Valve.....167

Travel Reduction Gear.....171

Group 6 Others (Upperstructure).....172

Pilot Shut-Off valve.....172

Shockless Valve.....173

Solenoid Valve Unit.....175

Pilot Relief Valve.....177

EC Motor.....177

Group 7 Others (Undercarriage).....178

Swing Bearing.....178

Center Joint.....179

Track Adjuster.....181

T4.....182

CONTENTS(173T-4-1).....182

SECTION 4 OPERATIONAL PERFORMANCE TEST.....182

Group 1 Introducution.....184

Operational Performance tests.....184

Preparation for Performance tests.....185

Group 2 Engine Test.....186

Engine Speed.....186

Engine Compression Pressure.....188

Valve Clearance Adjustment.....189

Nozzle Check.....191

Injection Timing.....193

Group 3 Excavator Test.....196

Travel Speed.....196

Track Revolution Speed.....197

Mistrack Check.....198

Travel Parking Function Check.....199

Swing Speed.....200

Swing Function Drift Check.....201

Swing Motor Leakage.....202

Swing Bearing Play.....203

Maximum Swingable Slant Angle.....204

Hydraulic Cylinder Cycle Time.....205

Dig Function Drift Check.....206

Control Lever Operating Force.....208

Control Lever Stroke.....209

Combined Boom Raise/Swing Function Check.....210

Group 4 Component Test.....212

Primary Pilot Pressure.....212

Secondary Pilot Pressure.....214

Solenoid Valve Set Pressure.....215

Main Relief Valve Set Pressure.....217

Overload Relief Valve Set Pressure.....221

Main Pump Flow Rate.....223

Swing Motor Drainage.....229

Travel Motor Drainage.....231

Group 5 Standard.....234

Operational Performance Standard Table.....234

Main Pump P-Q Curve.....237

Injection Pump.....239

T5.....240

CONTENTS(173T-5-1).....240

SECTION 5 TROUBLESHOOTING.....240

Group 1 Diagnosing Procedure.....242

Introduction.....242

Diagnosing Procedure.....243

Dr.EX.....245

Dr.EX Start-Up Procedure.....245

Fault Code.....246

Dr.EX Monitoring Function.....247

Dr.EX Special Function (Service Mode).....248

Controllable Data.....255

Group 2 Component Layout.....256

Main Components.....256

Electrical System (Overall Syatem).....257

Electrical System (Relays).....258

Electrical System (Monitor and Switch Panels).....259

Others Components.....265

Group 3 Troubleshooting A.....268

Troubleshooting A Procedure.....268

Fault Code.....269

Fault Code 01.....270

Fault Code 02, 03.....271

Fault Code 04, 05.....272

Fault Code 06.....273

Fault Code 07.....274

Sensor Operating Range List.....275

Group 4 Troubleshooting B.....276

Troubleshooting B Procedure.....276

Relationship Between Machine Trouble Symptoms and Parts in Trouble.....277

Correlation Between Trouble Symptoms and Part Failures.....287

Engine TroubleShooting.....293

Overall Actuator System Troubleshooting.....307

Front Attachment Control System Troubleshooting.....313

Swing System Troubleshooting .....325

Travel System Troubleshooting.....328

Troubleshooting for Other Functions.....333

Engine Speed Adjustment and Engine Learning.....335

Exchange Inspection Method.....336

Boom Lowering Method When Engine Stalls.....337

Group 5 Troubleshooting C.....338

Traubleshooting C Procedure.....338

Malfunction of Coolant Temperature Gauge.....339

Malfunction of Fuel Gauge.....341

Malfunction of Indecator Light Check System.....343

Malfunction of Level Check Switch.....343

Malfunction of Preheat Indicator.....344

Malfunction of Engine Oil Level Indicator.....345

Malfunction of Coolant Level Indicator.....347

Malfunction of Hydraulic Oil Level INdicator.....349

Malfunction of Alternator Indicator.....351

Malfunction of Engine Oil Pressure Indicator.....353

Malfunction of Overheat Indicator.....355

Malfunction of Fuel Level Indicator.....357

Malfunction of Air Filter Restriction Indicator.....359

Malfunction of Buzzer.....361

Malfunction of Hour Meter.....363

Group 6 Electrical System Inspection.....364

Precautions for Inspection and Maintenace.....364

Instructions for Disconnecting Connectors.....366

Fuse Continuity Test.....367

Inspection and Replacement of Fusible Links.....368

Battery Voltage Check.....369

How to Troubleshoot Alternator Malfunctions.....370

Continuity Check.....371

Voltage and Current Check.....373

Replacement of Relay.....377

Group 7 Harness Check.....378

Circuit Check.....378

WM.....380

W1.....380

CONTENTS(173W-1-1).....380

SECTION 1 GENERAL INFORMATION.....380

Group 1 Precautions for Disassembling and Assembling.....382

Precautions for Disassembly and Assembly.....382

Group 2 Tightening Torque.....386

Tightening Torque Specifications.....386

Torqr Chart.....387

Piping Joint.....390

W2.....394

CONTENTS(173W-2-1).....394

SECTION 2 UPPERSTRUCTURE.....394

Group 1 Cab.....396

Remove and Install Cab.....396

Dimensions of the Cab Glass.....402

Group 2 Counterweight.....404

Remove and Install Couterweight.....404

Group 3 Main Frame.....406

Remove and Install Main Frame.....406

Group 4 Pump Device.....412

Remove and Install Pump Device.....412

Desassemble Pump Device.....415

Assemble Pump Device.....421

Disassemble Main Pump.....429

Assemble Main Pump.....437

Disassemble Regulator.....451

Assemble Regulator.....453

Disassemble and Assemble Pilot Pump.....455

Maintenance Standard.....459

Group 5 Control Valve.....462

Remove and Install Control Valve.....462

Disassemble Control Valve (1).....465

Assemble Control Valve (1).....467

Disassemble Control Valve (2).....469

Assemble Control Valve (2).....471

Disassemble Control Valve (3).....473

Assemble Control Valve (3).....475

Disassemble Control Valve (4).....479

Assemble Control Valve (4).....481

Disassemble Control Valve (5).....483

Assemble Control Valve (5).....485

Disassemble Control Valve (6).....487

Assemble Control Valve (6).....489

Structure of Valves.....491

Group 6 Swing Device.....498

Remove and Install Swing Device.....498

Disssemble Swing Device.....501

Assemble Swing Device.....505

Disassemble Swing Motor.....511

Assemble Swing Motor.....515

Disassemble and Assemble Parking Brake Release Valve.....519

Maintenance Standard.....520

Group 7 Pilot Valve.....522

Remove and Install Right Pilot Valve.....522

Remove and Install Left Pilot Valve.....525

Remove and Install Travel Pilot Valve.....528

Disassemble Right and Left Pilot Valve.....531

Assemble Right and Left Pilot Valve.....533

Disassemble Travel Pilot Valve.....537

Assemble Travel Pilot Valve.....541

Group 8 Pilot Shut-Off Valve.....546

Remove and Install Pilot Shut-Off Valve.....546

Disassemble Pilot Shut-Off Valve.....549

Assemble Pilot Shut-Off Valve.....551

Group 9 Shockless Valve.....554

Remove and Install Shockless Valve.....554

Disassemble and Assemble Shockless Valve.....556