Complete workshop repair service manual with electrical wiring diagrams for Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic 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. 

KO-493-02 - Hitachi ZAXIS 470-5 class, 670-5 class, 870-5 class Assembly Procedure Manual.pdf
TOJBG-EN-00 - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Technical Manual (Operational Principle).pdf
TTJBG-EN-00 (attach to) - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Electrical Circuit Diagram.pdf
TTJBG-EN-00 - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Technical Manual (Troubleshooting).pdf
WJBG-EN-00 - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Workshop Manual.pdf

PAGES: 1,831
FORMAT: PDF

EXCERPT:
Travel Relief Valve Set-Pressure Adjustment Procedure
Adjust the set pressure of travel relief valve (1) using adjusting screw (3) after loosening lock nut (2).
1.  Loosen lock nut (2).
j 19 mm
2.  Turn adjusting screw (3) to adjust the pressure setting, referring to the table below.
j 6 mm
3.  Retighten lock nut (2).
j 19 mm
m 34.3 to 44.1 N·m
1 (3.5 to 4.5 kgf·m)
4.  After adjustment check the set pressure.
...

KO-493-02 - Hitachi ZAXIS 470-5 class, 670-5 class, 870-5 class Assembly Procedure Manual................2
  ZAXIS 5A ASSEMBLY................2
    1. Precautions................11
      1-1 Safety precautions for servicemen................11
      1-2 How to use a power wrench................29
      1-3 Work precautions................33
    2. Work Plan and Preparations................43
      2-1 Work Plan (Backhoe Front)................43
      2-2 Transport................45
      2-3 Transport arrangements................52
    3. Parts Check................54
      3-1 Check................54
    4. Preparations................56
      4-1 Preparation of ZX470-5 class (backhoe front)................56
      4-2 Preparation of ZX670LC-5 class (backhoe front)................57
      4-3 Preparation of ZX870-5 class (backhoe front)................57
    5. Machines, Apparatuses, Tools, and Materials necessary for Assembly................58
    6. Assembly of Undercarriage and Superstructure................66
      6-1 Preparation................66
      6-2 Connection of undercarriage and superstructure................68
        6-2-1 Connecting the superstructure (with track center frame) and side frames................70
        6-2-2 Connecting the track center frame and side frames................82
        6-2-3 Connecting of undercarriage and superstructure................94
      6-3 Connection of travel hoses and installation of steps, handrails................112
      6-4 Greasing of swing bearing................122
      6-5 Final check of the superstructure................124
      6-6 Releasing the air from the main pumps................134
      6-7 Trial operation of superstructure................136
    7. Assembly Procedure for Backhoe Front................140
      7-1 Preparation................140
      7-2 Preparing to assemble the backhoe front................142
      7-3 Installing the boom................152
      7-4 Installing the arm................164
      7-5 Installing the bucket................178
      7-5' Installing the bucket................186
      7-6 Installing the counterweight................200
      7-7 Bleeding the all cylinders and checking for hoses interference................208
      7-8 Adjusting the track link tension................212
      7-9 Final trial operation check................214
      7-10 Applying grease to the backhoe front................216
      7-11 Disassembly procedure for shipment................218
    8. Side Frame Extension and Retraction Method................232
    9. Post-assembly Inspection................244
    10. Checking Machine Performance................250
    11. Appendix (drawings of lifting parts)................258
      11-1 ZX470-5 class superstructure lifting parts................260
      11-2 ZX670LC-5 class superstructure lifting parts................264
      11-3 ZX870-5 class superstructure lifting parts................268
      11-4 Instructions for lifting the base machine assembly................272
    ASSEMBLY CHECK SHEET................276
      FORWORD................277
      COMPLETED ASSEMBLY CHECKREPORT FOR THE ZX470-5 class/ZX670LC-5 class/ZX870-5 class................278
      ZX470-5 class/ZX670LC-5 class/ZX870-5 class ASSEMBLY CHECK SHEET................279
      IMPLEMENT SPEEDS................283
TOJBG-EN-00 - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Technical Manual (Operational Principle)................291
  TOJBG-EN-00................291
  INTRODUCTION................293
  SYMBOL AND ABBREVIATION................295
  SECTION AND GROUP CONTENTS................297
  SECTION 1 GENERAL................299
    Group 1 Specifications................301
      Specifications ZX670LC-5A, 690LCH-5A................301
      Working Ranges ZX670LC-5A, 690LCH-5A................302
    Group 2 Component Layout................303
      Main Component................303
      View A................304
      Shockless Valve................304
      Electrical System (Overview)................305
      Fuel Pump................306
      Electrical System (Rear Tray)................307
      Electrical System (Switch Panel)................308
      Electrical System (Cab Behind Side)................309
      Battery Disconnect Switch................310
      Around Horn................311
      Boom Upper Side................311
      Around Oil Cooler................311
      Auto Lubricating System................311
      Engine................312
      Pump Device................313
      Control Valve................314
      Check Valve................316
      Signal Control Valve................316
      4-Spool Solenoid Valve Unit................319
      2-Spool Solenoid Valve Unit................319
    Group 3 Component Specifications................321
      Engine................321
      Engine Accessories................325
      Hydraulic Component................327
      Electrical Component................331
  SECTION 2 SYSTEM................335
    Group 1 Controller................337
      Outline................337
      CAN Circuit................338
    Group 2 Control System................341
      Outline................341
      Engine Control................344
      Pump Control................368
      Valve Control................392
      Other Control................410
    Group 3 ECM System................423
      Outline................423
      Fuel Injection Control................424
      Fuel Injection Amount Correction Control................432
      EGR Control................434
      Preheating Control................436
      Alarm Control................437
      Fuel Bleeding Air Control................438
    Group 4 Hydraulic System................439
      Outline................439
      Pilot Circuit................440
      Main Circuit................454
    Group 5 Electrical System................477
      Outline................477
      Main Circuit................478
      Electric Power Circuit (Key Switch: OFF)................480
      CAN Circuit................482
      Accessory Circuit................484
      Starting Circuit (Key Switch: START)................486
      Charging Circuit (Key Switch: ON)................488
      Surge Voltage Prevention Circuit................492
      Pilot Shut-Off Circuit (Key Switch: ON)................494
      Auto Shut-Down Circuit................496
      Engine Stop Circuit................498
      Monitor Circuit................501
      Security Circuit................502
      Radio Circuit................504
      Air Conditioner Circuit................504
      Accessory Circuit................507
      Work Light Circuit................508
      Wiper/Washer Circuit................512
      Cab Light Circuit................514
  SECTION 3 COMPONENT OPERATION................519
    Group 1 Pump Device................521
      Outline................521
      Main Pump................522
      Regulator (Main Pump)................524
      Pump Control Solenoid Valve (Main Pump)................532
      Fan Pump................534
      Regulator (Fan Pump)................536
      Pump Control Solenoid Valve (Fan Pump)................544
      Pilot Pump................546
      Pump Delivery Pressure Sensor................546
      Pump Control Pressure Sensor................546
    Group 2 Swing Device................547
      Outline................547
      Swing Reduction Gear................548
      Swing Motor................549
      Swing Parking Brake................550
      Valve Unit................552
    Group 3 Control Valve................555
      Outline................555
      Hydraulic Circuit................572
      Flow Combiner Valve................578
      Main Relief Valve................580
      Overload Relief Valve (with Make-Up Function)................584
      Boom Overload Relief Valve (Low Pressure)................588
      Regenerative Valve................590
      Anti-Drift Valve................596
      Flow Rate Control Valve................600
      Boom Lower Meter-In Cut Valve................608
      Bypass Shut-Out Valve................610
    Group 4 Pilot Valve................613
      Outline................613
      Operation (Front Attachment / Swing and Travel Pilot Valves)................615
      Operation (Auxiliary / Counterweight Removal and Installation Pilot Valve)................623
      Shockless Function (Only for Travel Pilot Valve)................628
    Group 5 Travel Device................629
      Outline................629
      Travel Reduction Gear................630
      Travel Motor................632
      Parking Brake................634
      Travel Brake Valve................636
      Overload Relief Valve................640
      Travel Mode Control................642
    Group 6 Signal Control Valve................647
      Outline................647
      Pilot Port................648
      Shuttle Valve................653
      Shockless Valve................656
      Pump 1 Flow Rate Control Valve, Pump 2 Flow Rate Control Valve................660
      Arm Flow Rate Control Valve Control Spool, Flow Combiner Valve Control Spool, Swing Parking Brake Release Spool................662
    Group 7 Others (Upperstructure)................663
      Pilot Shut-Off Solenoid Valve................663
      Solenoid Valve................665
      Fan Motor................667
      Fan Valve................668
      Pilot Relief Valve................671
      Shockless Valve................672
      Accumulator................673
      Distribution Valve................674
    Group 8 Others (Undercarriage)................677
      Swing Bearing................677
      Center Joint................678
      Track Adjuster................679
  SERVICE MANUAL REVISION REQUEST FORM................683
TTJBG-EN-00 (attach to) - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Electrical Circuit Diagram................685
  ELECTRICAL CIRCUIT DIAGRAM................685
  AIR CONDITIONER CIRCUIT DIAGRAM................686
  CONNECTORS................687
  CAB HARNESS................688
  MAIN HARNESS................689
  ENGINE HARNESS................690
  PUMP HARNESS................691
  CONTROL VALVE HARNESS................692
  MONITOR HARNESS................693
  KEY SWITCH HARNESS................694
  OIL COOLER FAN REVERSE ROTATION SWITCH HARNESS................695
  ENGINE STOP SWITCH HARNESS................696
  PILOT SHUT-OFF SOLENOID VALVE HARNESS................697
  GSM (MOBILE COMMUNICATION TERMINAL) HARNESS................698
  SATELLITE COMMUNICATION HARNESS................699
  AUTO LUBRICATION ON/OFF SWITCH HARNESS................700
  CAMERA HARNESS................701
  BOOM MODE SWITCH AND SEAT HEATER SWITCH HARNESS (OPTION)................702
  WORK LIGHT (ON THE CAB ROOF) HARNESS 1 (OPTION)................703
  WORK LIGHT (ON THE CAB ROOF) HARNESS 2 (OPTION)................704
  HYDRAULIC CIRCUIT DIAGRAM................705
TTJBG-EN-00 - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Technical Manual (Troubleshooting)................706
  TTJBG-EN-00................706
  INTRODUCTION................708
  SYMBOL AND ABBREVIATION................710
  SAFETY................712
  SECTION AND GROUP CONTENTS................752
  SECTION 4OPERATIONAL PERFORMANCE TEST................754
    Group 1 Introduction................756
      Operational Performance Tests................756
      Preparation for Performance Tests................757
    Group 2 Standard................758
      Operational Performance Standard Table................758
      Main Pump P-Q Diagram................762
      Radiator Fan Pump P-Q Diagram................763
      Radiator Fan Pump I-Q Diagram................764
      Sensor Activating Range................765
      MPDr. Monitor Indicating Values (MC)................766
      MPDr. Monitor Indicating Values (ECM)................772
    Group 3 Engine Test................774
      Engine Speed................774
      Lubricant Consumption................777
    Group 4 Machine Performance Test................778
      Travel Speed................778
      Mistrack Check................780
      Travel Motor Leakage................781
      Swing Speed................782
      Swing Function Drift Check................783
      Swing Motor Leakage................784
      Maximum Swingable Slant Angle................785
      Swing Bearing Play................787
      Hydraulic Cylinder Cycle Time................789
      Dig Function Drift Check................791
      Control Lever Operating Force................792
      Control Lever Stroke................793
      Boom Raise/Swing Combined Operation Check................794
    Group 5 Component Test................796
      Primary Pilot Pressure................796
      Secondary Pilot Pressure................798
      4-Spool Solenoid Valve Set Pressure................799
      2-Spool Solenoid Valve Set Pressure................800
      Main Pump Delivery Pressure................802
      Radiator Fan Pump Delivery Pressure................803
      Main Relief, Swing Relief and Travel Relief Set Pressure................804
      Overload Relief Set Pressure................810
      Main Pump Flow Rate Measurement................813
      Radiator Fan Pump Flow Rate Measurement................815
      Swing Motor Drainage................825
      Travel Motor Drainage................827
    Group 6 Adjustment................830
      PUMP LEARNING................830
      TORQUE ADJUSTMENT................831
      CONNECTION................832
  SECTION 5TROUBLESHOOTING................836
    Group 1 Diagnosing Procedure................838
      Introduction................838
      Diagnosis Procedure................839
      Electrical System Inspection................842
      Precautions for Inspection and Maintenance................843
      Instructions for Disconnecting Connectors................845
      Fuse Inspection................847
      Fusible Link Inspection................850
      Battery Voltage Check................851
      Alternator Check................852
      Continuity Check................853
      Voltage and Current Measurement................855
      Check by False Signal................862
      Test Wire Harness................863
    Group 2 Monitor................866
      Outline................866
      Operating Procedures of Service Menu................867
      Setting Menu................904
      Inspection of Engine Oil Level, Coolant Level, Hour Meter, and Fuel Gauge................906
      Fuel Gauge and Coolant Temperature Gauge................907
    Group 3 e-Service................908
      Outline................908
      List of Operation Data................909
      Snapshot Data................913
      Communication System................914
    Group 4 Component Layout................916
      Main Component................916
      Inter Cooler/Oil Cooler/Radiator................917
      Shockless Valve................917
      Electrical System (Overview)................918
      Fuel Pump................919
      Electrical System (Rear Tray)................920
      Electrical System (Switch Panel)................921
      Electrical System (Cab Behind Side)................922
      Battery Disconnect Switch................923
      Around Horn................924
      Boom Upper Side................924
      Electric Grease Gun................924
      Engine................925
      Pump Device................926
      Control Valve................927
      Check Valve/Accumulator................928
      Signal Control Valve................928
      4-Spool Solenoid Valve Unit................931
      2-Spool Solenoid Valve Unit................931
      Layout of Control Valve................933
      Pilot Port (Signal Control Valve)................949
    Group 5 Troubleshooting A................954
      Troubleshooting A (Base Machine Diagnosis By Using Fault Codes) Procedure................954
      MC Fault Code List................956
      ECM Fault Code List................975
      Monitor Controller (Monitor) Fault Code List................980
      Monitor Controller (Information) Fault Code List................981
      Air Conditioner Controller Fault Code List................984
      Communication Terminal Fault Code List................985
      MC Fault Codes 11000 to 11002................986
      MC Fault Code 11003................987
      MC Fault Codes 11006, 11007,11009................990
      Monitor Controller (Monitor) Fault Codes 13002, 13003, 13005................990
      CAN0 Harness Check................991
      MC Fault Codes 11008, 11010................994
      Monitor Controller (Monitor) Fault Codes 13004, 13006, 13007................994
      CAN1 Harness Check................995
      MC Fault Code 11100................998
      MC Fault Code 11101................999
      MC Fault Codes 11200, 11202................1000
      MC Fault Codes 11301, 11302................1001
      MC Fault Code 11303................1002
      MC Fault Codes 11304, 11325................1003
      MC Fault Code 11405................1004
      MC Fault Code 11408................1005
      MC Fault Code 11412................1006
      MC Fault Code 11428................1007
      MC Fault Code 11802................1008
      MC Fault Code 11901................1009
      MC Fault Codes 11942, 11944................1010
      MC Fault Codes 11945................1011
      MC Fault Code 11948................1012
      MC Fault Code 11950................1013
      MC Fault Code 11951................1014
      MC Fault Code 11953................1015
      MC Fault Codes 11978, 11979................1016
      MC Fault Code 11982................1017
      MC Fault Codes 11985, 11986................1018
      MC Fault Code 11989................1019
      MC Fault Codes 11992, 11994................1020
      MC Fault Codes 11995, 11997................1021
      MC Fault Code 11998................1022
      MC Fault Codes 20062................1023
      Monitor Controller (Information) Fault Codes 13304, 13310................1024
      Monitor Controller (Information) Fault Code 13311................1025
      Monitor Controller (Information) Fault Codes 20100 to 20104, 20106................1026
      Monitor Controller (Information) Fault Codes 20109, 20110, 20113, 20114, 20133, 20146, 20149................1027
      Air Conditioner Controller Fault Codes 11 to 22................1028
      Air Conditioner Controller Fault Codes 43 to 92................1029
    Group 6 Troubleshooting B................1030
      Troubleshooting B (Machine Diagnosis by Using Trouble Symptom) Procedure................1030
      Relationship between Machine Trouble Symptoms and Related Parts................1032
      Correlation Between Trouble Symptoms and Part Failures................1058
      Engine System Troubleshooting................1076
      All Actuator System Troubleshooting................1083
      Front Attachment System Troubleshooting................1089
      Swing System Troubleshooting................1102
      Travel System Troubleshooting................1105
      Other System Troubleshooting................1109
      Exchange Inspection................1116
      How to Lowering Boom When Emergency and When Engine Stops................1119
    Group 7 Air Conditioner................1120
      Outline................1120
      Functions of Main Parts................1123
      Troubleshooting................1128
      Air Conditioner Controller Fault Code List................1129
      Air Conditioner Controller Fault Codes 11 to 22................1130
      Air Conditioner Controller Fault Codes 43 to 92................1131
      Work after Replacing Components................1153
      Refill Compressor Oil................1154
      Charge Air Conditioner with Refrigerant................1155
      Hose and Pipe Tightening Torque................1163
  SERVICE MANUAL REVISION REQUEST FORM................1166
  The Attached Diagram List................1167
WJBG-EN-00 - Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Workshop Manual................1168
  WJBG-EN-00................1168
    INTRODUCTION................1170
      To The Reader................1170
      Additional References................1170
      Manual Composition................1170
      Page Number................1170
      Safety Alert Symbol and Headline Notations................1171
      Units Used................1171
    SYMBOL AND ABBREVIATION................1172
    SAFETY................1174
      Recognize Safety Information................1174
      Understand Signal Words................1174
      Follow Safety Instructions................1175
      Prepare for Emergencies................1176
      Wear Protective Clothing................1176
      Protect Against Noise................1177
      Inspect Machine................1177
      General Precautions for Cab................1178
      Use Handholds and Steps................1179
      Adjust the Operator's Seat................1179
      Ensure Safety Before Rising from or Leaving Operator’s Seat................1180
      Fasten Your Seat Belt................1180
      Move and Operate Machine Safely................1181
      Operate Only from Operator's Seat................1181
      Jump Starting................1182
      Keep Riders off Machine................1182
      Precautions for Operations................1183
      Investigate Job Site Beforehand................1184
      Install OPG Guard................1185
      Restriction of Attachment Installation................1186
      Provide Signals for Jobs Involving Multiple Machines................1186
      Confirm Direction of Machine to Be Driven................1186
      Drive Machine Safely................1187
      Avoid Injury from Rollaway Accidents................1189
      Avoid Injury from Back-Over and Swing Accidents................1190
      Keep Person Clear from Working Area................1191
      Never Position Bucket Over Anyone................1191
      Avoid Undercutting................1192
      Avoid Tipping................1192
      Never Undercut a High Bank................1193
      Dig with Caution................1193
      Operate with Caution................1193
      Avoid Power Lines................1194
      Precautions for Lightning................1194
      Object Handling................1195
      Protect Against Flying Debris................1195
      Park Machine Safely................1196
      Handle Fluids Safely−Avoid Fires................1196
      Transport Safely................1197
      Practice Safe Maintenance................1198
      Warn Others of Service Work................1199
      Support Machine Properly................1199
      Stay Clear of Moving Parts................1200
      Prevent Parts from Flying................1200
      Avoid Injury from Attachment Falling Accident................1201
      Prevent Burns................1201
      Replace Rubber Hoses Periodically................1202
      Avoid High-Pressure Fluids................1202
      Prevent Fires................1203
      Evacuating in Case of Fire................1205
      Beware of Exhaust Fumes................1205
      Precautions for Welding and Grinding................1206
      Avoid Heating Near Pressurized Fluid Lines................1207
      Avoid Applying Heat to Lines Containing Flammable Fluids................1207
      Precautions for Handling Accumulator and Gas Damper................1207
      Remove Paint Before Welding or Heating................1208
      Beware of Asbestos and Silicon Dust and Other Contamination................1208
      Prevent Battery Explosions................1209
      Service Air Conditioning System Safely................1209
      Handle Chemical Products Safely................1210
      Dispose of Waste Properly................1210
      Never Ride Attachment................1211
      Precautions for Communication Terminal................1211
      Precautions for Communication Terminal Equipment................1212
      Before Returning the Machine to the Customer................1213
    SECTION AND GROUP CONTENTS................1214
    SECTION 1 GENERAL................1216
      Group 1 Precautions for Disassembling and Assembling................1218
        Precautions for Disassembling and Assembling................1218
      Group 2 Tightening................1224
        Tightening Bolts and Nuts................1224
        Piping Joint................1227
      Group 3 Painting................1232
        Painting specification................1232
        Final painted color................1232
      Group 4 Bleeding Air................1234
        Bleeding Air from Hydraulic Oil Tank (Pressure Release)................1234
        Bleeding Air from Hydraulic System................1235
        Bleeding Air from Fuel System................1236
        Bleeding Air from Expansion Tank (Radiator) (Pressure Release)................1238
      Group 5 Pressure Release Procedure................1240
        Hydraulic Circuit Pressure Release Procedure................1240
      Group 6 Preparation................1242
        Preparation before Inspection and Maintenance................1242
    SECTION 2 MAINTENANCE STANDARD................1246
      Group 1 Upperstructure................1248
        Main Pump................1248
        Fan Pump................1249
        Swing Motor................1250
      Group 2 Undercarriage................1252
        Travel Device................1252
        Sprocket................1253
        Center Joint................1254
        Front Idler................1256
        Upper Roller................1258
        Lower Roller................1259
        Track................1260
      Group 3 Front Attachment................1264
        Pin and Bushing................1264
        Side Cutter................1266
        Point................1266
        Standard Dimensions for Arm and Bucket Connection................1267
        Standard Dimensions for Arm and Boom Connection................1269
        Cylinder................1270
    SECTION 3 UPPERSTRUCTURE................1274
      Group 1 Cab................1276
        Removal and Installation of Cab................1276
        Dimensions of Cab Glass (Standard Cab)................1296
        Dimensions of Cab Glass (H Cab)................1315
      Group 2 Counterweight................1318
        Removal and Installation of Counterweight................1318
      Group 3 Main Frame................1322
        Removal and Installation of Main Frame................1322
      Group 4 Engine................1330
        Removal and Installation of Engine................1330
      Group 8 Pump Device................1386
        Removal and Installation of Pump Device................1386
        Disassembly of Pump Transmission................1416
        Assembly of Pump Transmission................1421
        Disassembly of Main Pump................1426
        Assembly of Main Pump................1431
        Disassembly of Regulator for Main Pump................1436
        Assembly of Regulator for Main Pump................1439
        Disassembly of Fan Pump................1442
        Assembly of Fan Pump................1446
        Assembly of Regulator for Fan Pump................1452
        Structure of Pilot Pump................1456
      Group 9 Control Valve................1458
        Removal and Installation of Control Valve................1458
        Disassembly and Assembly of Valve Unit................1492
        Disassembly of Control Valve (4-Spool Side)................1498
        Assembly of Control Valve (4-Spool Side)................1506
        Disassembly of Control Valve (5-Spool Side)................1514
        Assembly of Control Valve (5-Spool Side)................1521
      Group 10 Swing Device................1528
        Removal and Installation of Swing Device................1528
        Disassembly of Swing Device................1534
        Assembly of Swing Device................1540
        Disassembly of Swing Motor................1546
        Assembly of Swing Motor................1549
      Group 11 Pilot Valve................1554
        Removal and Installation of Pilot Valve (Left)................1554
        Removal and Installation of Pilot Valve (Right)................1560
        Removal and Installation of Travel Pilot Valve................1568
        Disassembly of Pilot Valves (Right and Left)................1572
        Assembly of Pilot Valves (Right and Left)................1575
        Disassembly of Travel Pilot Valve................1578
        Assembly of Travel Pilot Valve................1582
      Group 12 Solenoid Valve................1588
        Removal and Installation of Pilot Shut-Off Solenoid Valve................1588
        Removal and Installation of 4-Spool Solenoid Valve Unit................1592
        Removal and Installation of 2-Spool Solenoid Valve Unit................1596
        Disassembly of Pilot Shut-Off Solenoid Valve................1600
        Assembly of Pilot Shut-Off Solenoid Valve................1602
        Structure of 4-Spool Solenoid Valve Unit................1604
        Structure of 2-Spool Solenoid Valve Unit................1606
      Group 13 Signal Control Valve................1608
        Removal and Installation of Signal Control Valve................1608
        Structure of Signal Control Valve................1614
      Group 14 Shockless Valve................1616
        Removal and Installation of Shockless Valve................1616
        Structure of Shockless Valve................1618
      Group 15 Fan Valve................1620
        Removal and Installation of Fan Valve................1620
        Structure of Fan Valve................1624
      Group 16 Fan Motor................1626
        Removal and Installation of Fan Motor................1626
        Structure of Fan Motor................1656
    SECTION 4 UNDERCARRIAGE................1660
      Group 1 Swing Bearing................1662
        Removal and Installation of Swing Bearing................1662
        Disassembly of Swing Bearing................1666
        Assembly of Swing Bearing................1669
      Group 2 Travel Device................1672
        Removal and Installation of Travel Device................1672
        Disassembly of Travel Device................1676
        Assembly of Travel Device................1683
        Disassembly of Travel Motor................1692
        Assembly of Travel Motor................1697
        Disassembly of Brake Valve................1702
        Assembly of Brake Valve................1705
        Precautions for Using Floating Seal................1708
      Group 3 Center Joint................1710
        Removal and Installation of Center Joint................1710
        Disassembly of Center Joint................1714
        Assembly of Center Joint................1716
        Replacement of Body and Spindle................1719
      Group 4 Track Adjuster................1720
        Removal and Installation of Track Adjuster................1720
        Disassembly of Track Adjuster................1722
        Assembly of Track Adjuster................1727
      Group 5 Front Idler................1732
        Removal and Installation of Front Idler................1732
        Disassembly of Front Idler................1734
        Assembly of Front Idler................1737
        Precautions for Using Floating Seal................1740
      Group 6 Upper and Lower Rollers................1742
        Removal and Installation of Upper Roller................1742
        Removal and Installation of Lower Roller................1746
        Disassembly of Upper Roller................1750
        Assembly of Upper Roller................1752
        Disassembly of Lower Roller................1754
        Assembly of Lower Roller................1756
        Precautions for Using Floating Seal................1760
      Group 7 Track................1762
        Removal and Installation of Track................1762
    SECTION 5 FRONT ATTACHMENT................1778
      Group 1 Front Attachment................1780
        Removal and Installation of Bucket................1780
        Removal and Installation of Arm................1784
        Removal and Installation of Boom................1790
        Remove and Install Bushing................1798
      Group 2 Cylinder................1800
        Removal and Installation of Boom Cylinder................1800
        Removal and Installation of Arm Cylinder................1804
        Removal and Installation of Bucket Cylinder................1808
        Disassembly of Boom Cylinder................1812
        Assembly of Boom Cylinder................1815
        Disassembly of Arm Cylinder................1818
        Assembly of Arm Cylinder................1821
        Disassembly of Bucket Cylinder................1824
        Assembly of Bucket Cylinder................1827
    SERVICE MANUAL REVISION REQUEST FORM................1832

Hitachi ZX670LC-5A, ZX690LCH-5A Excavator Factory Service & Shop Manual