Complete workshop repair & service manual with electrical wiring diagrams for Hitachi ZX280-5G, ZX280LC-5G Excavator. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

Hitachi ZX280-5G, ZX280LC-5G Excavator service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

MANUAL LIST:
TODDF-EN-00 - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Technical Manual (Operational Principle).pdf
TTDDF-EN-00 (attach to) - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Electrical Circuit Diagram.pdf
TTDDF-EN-00 - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Technical Manual (Troubleshooting).pdf
WDDF-EN-00 - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Workshop Manual.pdf

FORMAT: PDF
LANGUAGE: ENGLISH
PAGES: 1,297
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TODDF-EN-00 - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Technical Manual (Operational Principle)................2
  TODDF-EN-00................2
  INTRODUCTION................4
  SYMBOL AND ABBREVIATION................6
  SECTION AND GROUP CONTENTS................8
  SECTION 1 GENERAL................10
    Group 1 Specifications................12
      Specifications................12
      Working Ranges (Grouser shoe)................13
    Group 2 Component Layout................14
      Main Component................14
      Electrical System (Overview)................15
      Engine................16
      Electrical System (In Cab)................16
      Electrical System (Rear Tray)................17
      Electrical System (Switch Panel)................18
      Electrical System (Around Air Cleaner)................19
      Electrical System (Relays)................20
      Pump Device................21
      Control Valve................22
      Signal Control Valve................22
      Swing Device................24
      Travel Device................24
      3-Spool Solenoid Valve Unit................25
      Layout of Attachment Spec. Parts................27
    Group 3 Component Specifications................32
      Engine................32
      Engine Accessories................36
      Hydraulic Component................37
      Electrical Component................41
  SECTION 2 SYSTEM................44
    Group 1 Controller................46
      Outline................46
      CAN Circuit................47
    Group 2 Control System................50
      Outline................50
      Engine Control................53
      Pump Control................79
      Valve Control................89
      Other Control................105
    Group 3 Hydraulic System................110
      Outline................110
      Pilot Circuit................111
      Main Circuit................121
    Group 4 Electrical System................136
      Outline................136
      Main Circuit................137
      Electric Power Circuit (Key Switch: OFF)................139
      CAN Circuit................141
      Accessory Circuit................143
      Preheating Circuit (Key Switch: ON, START)................145
      Starting Circuit (Key Switch: START)................147
      Charging Circuit (Key Switch: ON)................151
      Surge Voltage Prevention Circuit................155
      Pilot Shut-Off Circuit (Key switch: ON)................157
      Engine Stop Circuit................159
      Monitor Circuit................162
      Security Circuit................163
      Radio Circuit................165
      Air Conditioner Circuit................165
      Accessory Circuit................168
      Work Light Circuit................169
      Wiper/Washer Circuit................171
      Cab Light Circuit................173
  SECTION 3 COMPONENT OPERATION................178
    Group 1 Pump Device................180
      Outline................180
      Main Pump................181
      Regulator................185
      Solenoid Valve................203
      Pilot Pump................205
      Pump Delivery Pressure Sensor................205
      Pump Control Pressure Sensor................205
      N Sensor (Engine Speed Sensor)................206
    Group 2 Swing Device................208
      Outline................208
      Swing Reduction Gear................209
      Swing Motor................210
      Swing Parking Brake................211
      Valve Unit................213
    Group 3 Control Valve................216
      Outline................216
      Hydraulic Circuit................237
      Flow Combiner Valve................243
      Main Relief Valve................245
      Overload Relief Valve (with Make-Up Function)................249
      Regenerative Valve................253
      Anti-Drift Valve................257
      Flow Rate Control Valve................261
      Digging Regenerative Valve................265
      Boom Lower Meter-In Cut Valve................267
      Auxiliary Flow Combiner Valve and Bypass Shut-Out Valve................269
    Group 4 Pilot Valve................274
      Outline................274
      Operation (Front Attachment / Swing and Travel Pilot Valves)................276
      Operation (Auxiliary Pilot Valve)................284
      Shockless Function (Only for Travel Pilot Valve)................289
    Group 5 Travel Device................290
      Outline................290
      Travel Reduction Gear................291
      Travel Motor................293
      Parking Brake................295
      Travel Brake Valve................297
      Overload Relief Valve................301
      Travel Mode Control................303
    Group 6 Signal Control Valve................308
      Outline................308
      Pilot Port................309
      Shuttle Valve................314
      Shockless Valve................317
      Pump 1 and 2 Flow Rate Control Valve................321
      Bucket Flow Rate Control Valve Control Spool, Flow Combiner Valve Control Spool, Swing Parking Brake Release Spool, Arm 1 Flow Rate Control Valve Control Spool................323
    Group 7 Others (Upperstructure)................326
      Pilot Shut-Off Solenoid Valve................326
      Solenoid Valve................328
      Pilot Relief Valve................331
      EC Motor................331
      Hose Rupture Valve................333
    Group 8 Others (Undercarriage)................340
      Swing Bearing................340
      Center Joint................341
      Track Adjuster (Front Idler Integrated Type)................342
  SERVICE MANUAL REVISION REQUEST FORM................346
TTDDF-EN-00 (attach to) - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Electrical Circuit Diagram................348
  ELECTRICAL CIRCUIT DIAGRAM................348
  CONNECTORS................349
  CAB HARNESS................350
  ENGINE HARNESS................351
  PUMP HARNESS................352
  MONITOR HARNESS................353
  KEY-SWITCH HARNESS................354
  GSM (MOBILE COMMUNICATION TERMINAL) HARNESS................355
  SATELLITE COMMUNICATION HARNESS................356
  PILOT SHUT-OFF SOLENOID VALVE HARNESS................357
  REARVIEW CAMERA HARNESS................358
  HYDRAULIC CIRCUIT DIAGRAM (STANDARD)................359
  HYDRAULIC CIRCUIT DIAGRAM (OPTIONAL)................360
TTDDF-EN-00 - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Technical Manual (Troubleshooting)................361
  TTDDF-EN-00................361
  INTRODUCTION................363
  SYMBOL AND ABBREVIATION................365
  SAFETY................367
  SECTION AND GROUP CONTENTS................407
  SECTION 4 OPERATIONAL PERFORMANCE TEST................409
    Group 1 Introduction................411
      Operational Performance Tests................411
      Preparation for Performance Tests................412
    Group 2 Standard................413
      Operational Performance Standard Table................413
      Main Pump P-Q Diagram................419
      Sensor Activating Range................421
      MPDr. Monitor Indicating Values................422
    Group 3 Engine Test................431
      Engine Speed................431
      Engine Compression Pressure................434
      Valve Clearance................436
      Nozzle................438
      Injection Timing................440
      Lubricant Consumption................442
    Group 4 Machine Performance Test................443
      Travel Speed................443
      Track Revolution Speed................444
      Mistrack Check................445
      Travel Parking Leakage................446
      Swing Speed................447
      Swing Function Drift Check................448
      Swing Motor Leakage................450
      Maximum Swingable Slant Angle................452
      Swing Bearing Play................454
      Hydraulic Cylinder Cycle Time................456
      Dig Function Drift Check................458
      Control Lever Operating Force................461
      Control Lever Stroke................462
      Combined Operation of Boom Raise / Swing Function Check................463
      Combined Operation of Boom Raise / Arm Roll-In Function Check................464
    Group 5 Component Test................465
      Primary Pilot Pressure................465
      Secondary Pilot Pressure................467
      Solenoid Valve Set Pressure................468
      Main Pump Delivery Pressure................470
      Main Relief Set Pressure................472
      Relief pressure (when relieving swing)................476
      Overload Relief Valve Set Pressure................478
      Main Pump Flow Rate Measurement................480
      Swing Motor Drainage................488
      Travel Motor Drainage................490
    Group 6 Adjustment................493
      Engine Speed Adjustment and Engine Learning................493
      Governor Lever and Fuel Cut Lever Position................498
  SECTION 5 TROUBLESHOOTING................503
    Group 1 Diagnosing Procedure................505
      Introduction................505
      Diagnosis Procedure................506
      Electric System Inspection................509
      Precautions for Inspection and Maintenance................510
      Instructions for Disconnecting Connectors................512
      Fuse Inspection................514
      Fusible Link Inspection................516
      Battery Voltage Check................517
      Alternator Check................518
      Continuity Check................519
      Voltage and Current Measurement................520
      Check by False Signal................527
      Test Harness................528
    Group 2 Monitor................531
      Outline................531
      Operating Procedures of Service Menu (Built-In Diagnosing System)................532
      Setting Menu................565
      Inspection of Hour Meter and Fuel Gauge................567
      Fuel Gauge and Coolant Temperature Gauge................568
    Group 3 e-Service................569
      Outline................569
      List of Operation Data................570
      Snapshot Data................574
      Communication System................575
    Group 4 Component Layout................577
      Main Component................577
      Electrical System (Overview)................578
      Engine................579
      Electrical System (In Cab)................579
      Electrical System (Rear Tray)................580
      Electrical System (Switch Panel)................581
      Electrical System (Around Air Cleaner)................582
      Electrical System (Relays)................583
      Pump Device................584
      Control Valve................585
      Signal Control Valve................585
      Swing Device................587
      Travel Device................587
      3-Spool Solenoid Valve Unit................588
      Layout of Attachment Spec. Parts................590
      Components in Control Valve................594
      Pilot Port................614
    Group 5 Troubleshooting A................619
      Troubleshooting A (Base Machine Diagnosis By Using Fault Codes) Procedure................619
      MC Fault Code List................621
      ECF Fault Code List................631
      Monitor Controller (Monitor) Fault Code List................632
      Monitor Controller (Information) Fault Code List................633
      Air Conditioner Controller Fault Code List................636
      Communication Terminal Fault Code List................637
      MC Fault Codes 11000 to 11002................639
      MC Fault Code 11003................640
      ECF Fault Code 16603................640
      MC Fault Codes 11006, 11007, 11009................643
      ECF Fault Code 16604................643
      Monitor Controller (Monitor) Fault Codes 13002, 13003, 13005................643
      CAN0 Harness Check................644
      MC Fault Codes 11008, 11010................647
      Monitor Controller (Monitor) Fault Codes 13004, 13006, 13007................647
      CAN1 Harness Check................648
      MC Fault Code 11100................651
      MC Fault Code 11101................652
      MC Fault Codes 11200, 11202................653
      MC Fault Codes 11206, 11208................654
      MC Fault Codes 11301 to 11303................655
      MC Fault Codes 11304, 11307................656
      MC Fault Code 11400................657
      MC Fault Code 11401................658
      MC Fault Code 11402................659
      MC Fault Code 11403................660
      MC Fault Code 11407................661
      MC Fault Code 11901................662
      ECF Fault Codes 16600 to 16602................663
      ECF Fault Code 16605................664
      ECF Fault Code 16606................665
      Air Conditioner Controller Fault Codes 11 to 22................666
      Air Conditioner Controller Fault Codes 43 to 92................667
      Monitor Controller (Information) Fault Codes 13304, 13310................668
      Monitor Controller (Information) Fault Code 13311................669
      Monitor Controller (Information) Faul tCodes 20100 to 20114................670
    Group 6 Troubleshooting B................671
      Troubleshooting B (Machine Diagnosis by Using Troubleshooting Symptom) Procedure................671
      Relationship between Machine Trouble Symptoms and Related Parts................673
      Correlation between Trouble Symptoms and Part Failures................692
      Engine System Troubleshooting................706
      All Actuator System Troubleshooting................720
      Front Attachment System Troubleshooting................727
      Swing System Troubleshooting................739
      Travel System Troubleshooting................741
      Other System Troubleshooting................746
      Exchange Inspection................747
      How to Lowering Boom in Case of Emergency and When Engine Stops................750
    Group 7 Air Conditioner................751
      Outline................751
      Functions of Main Parts................754
      Troubleshooting................759
      Air Conditioner Controller Fault Code List................760
      Air Conditioner Controller Fault Codes 11 to 22................761
      Air Conditioner Controller Fault Codes 43 to 92................762
      Work after Replacing Components................784
      Refill Compressor Oil................785
      Charge Air Conditioner with Refrigerant................786
      Hose and Pipe Tightening Torque................794
  SERVICE MANUAL REVISION REQUEST FORM................797
  The Attached Diagram List................798
WDDF-EN-00 - Hitachi ZX280-5G, ZX280LC-5G Hydraulic Excavator Workshop Manual................799
  WDDF-EN-00................799
  INTRODUCTION................801
  SYMBOL AND ABBREVIATION................803
  SAFETY................805
  SECTION AND GROUP CONTENTS................845
  SECTION 1 GENERAL................847
    Group 1 Precautions for Disassembling and Assembling................849
      Precautions for Disassembling and Assembling................849
    Group 2 Tightening................855
      Tightening Bolts and Nuts................855
      Piping Joint................858
    Group 3 Painting................863
      Painting................863
    Group 4 Bleeding Air................865
      Bleeding Air from Hydraulic Oil Tank................865
      Bleeding Air from Hydraulic System................866
      Bleeding Air from Fuel System................867
      Bleeding Air from Radiator................869
    Group 5 Pressure Release Procedure................871
      Hydraulic Circuit Pressure Release Procedure................871
    Group 6 Preparation................873
      Preparation before Inspection and Maintenance................873
  SECTION 2 MAINTENANCE STANDARD................877
    Group 1 Upperstructure................879
      Pump Device................879
      Swing Motor................883
    Group 2 Undercarriage................887
      Travel Motor................887
      Sprocket................889
      Front Idler................891
      Upper Roller................893
      Lower Roller................894
      Track................895
    Group 3 Front Attachment................899
      Pin and Bushing................899
      Side Cutter (2021232, 2021233)................901
      Point (4512365)................902
      Standard Dimensions for Arm and Bucket Connection................903
      Standard Dimensions for Arm and Boom Connection................904
      Cylinder................905
  SECTION 3 UPPERSTRUCTURE................909
    Group 1 Cab................911
      Removal and Installation of Cab................911
      Dimensions of Cab Glass................927
    Group 2 Counterweight................947
      Removal and Installation of Counterweight................947
    Group 3 Main Frame................949
      Removal and Installation of Main Frame................949
    Group 4 Engine................955
      Removal and Installation of Engine................955
    Group 5 Radiator Assembly................973
      Replacement of Radiator, Oil Cooler, and Intercooler................973
    Group 6 Hydraulic Oil Tank................985
      Removal and Installation of Hydraulic Oil Tank................985
    Group 7 Fuel Tank................993
      Removal and Installation of Fuel Tank................993
    Group 8 Pump Device................1001
      Removal and Installation of Pump Device................1001
      Removal and Installation of Coupling................1007
      Disassembly of Pump Device................1009
      Assembly of Pump Device................1016
      Disassembly of Regulator................1027
      Assembly of Regulator................1029
      Disassembly of Solenoid Valve................1031
      Assembly of Solenoid Valve................1033
      Structure of Pilot Pump................1035
    Group 9 Control Valve................1037
      Removal Installation of Control Valve................1037
      Disassembly of Housing................1051
      Assembly of Housing................1053
      Disassembly of Control Valve (4-Spool Side)................1055
      Assembly of Control Valve (4-Spool Side)................1062
      Disassembly of Control Valve (5-Spool Side)................1073
      Assembly of Control Valve (5-Spool Side)................1080
    Group 10 Swing Device................1089
      Removal and Installation of Swing Device................1089
      Disassembly of Swing Device................1093
      Assembly of Swing Device................1098
      Disassembly of Swing Motor................1105
      Assembly of Swing Motor................1108
      Structure of Swing Parking Brake Switch Valve................1111
    Group 11 Pilot Valve................1113
      Removal and Installation of Pilot Valve (Left)................1113
      Removal and Installation of Pilot Valve (Right)................1119
      Removal and Installation of Travel PilotValve................1127
      Disassembly of Pilot Valves (Right and Left)................1131
      Assembly of Pilot Valves (Right and Left)................1134
      Disassembly of Travel Pilot Valve................1137
      Assembly of Travel Pilot Valve................1141
    Group 12 Solenoid Valve................1147
      Removal and Installation of Pilot Shut-Off Solenoid Valve................1147
      Removal and Installation of 3-Spool Solenoid Valve Unit................1151
      Disassembly of Pilot Shut-Off SolenoidValve................1155
      Assembly of Pilot Shut-Off Solenoid Valve................1157
      Structure of 3-Spool Solenoid Valve Unit................1159
    Group 13 Signal Control Valve................1161
      Removal and Installation of Signal ControlValve................1161
      Structure of Signal Control Valve................1167
  SECTION 4 UNDERCARRIAGE................1171
    Group 1 Swing Bearing................1173
      Removal and Installation of Swing Bearing................1173
      Disassembly of Swing Bearing................1177
      Assembly of Swing Bearing................1180
    Group 2 Travel Device................1183
      Removal and Installation of Travel Device................1183
      Disassembly of Travel Device................1187
      Assembly of Travel Device................1191
      Disassembly of Travel Motor................1199
      Assembly of Travel Motor................1202
      Disassembly of Brake Valve................1207
      Assembly of Brake Valve................1209
      Precautions for Using Floating Seal................1211
    Group 3 Center Joint................1213
      Removal and Installation of Center Joint................1213
      Disassembly of Center Joint................1217
      Assembly of Center Joint................1219
      Replacement of Body and Spindle................1222
    Group 4 Track Adjuster................1223
      Removal and Installation of Track Adjuster................1223
      Disassembly of Front Idler................1227
      Assembly of Front Idler................1230
      Disassembly of Track Adjuster................1233
      Assembly of Track Adjuster................1237
      Precautions for Using Floating Seal................1241
    Group 5 Upper and Lower Rollers................1243
      Removal and Installation of Upper Roller................1243
      Removal and Installation of Lower Roller................1247
      Disassembly of Lower Roller................1251
      Assembly of Lower Roller................1253
      Precautions for Using Floating Seal................1255
    Group 6 Track................1257
      Removal and Installation of Track................1257
  SECTION 5 FRONT ATTACHMENT................1265
    Group 1 Front Attachment................1267
      Removal and Installation of Front Attachment................1267
    Group 2 Cylinder................1275
      Removal and Installation of Boom Cylinder................1275
      Removal and Installation of Arm Cylinder................1279
      Removal and Installation of Bucket Cylinder................1283
      Disassembly of Boom, Arm, Bucket Cylinders................1287
      Assembly of Boom, Arm, Bucket Cylinders................1291
  SERVICE MANUAL REVISION REQUEST FORM................1297

Hitachi ZX280-5G, ZX280LC-5G Excavator Factory Service & Shop Manual