Komatsu Hydraulic Loader WA490LC Repair Service Manual

Make: 
Model: 
Price: US$ 55.00

Complete service repair manual with Electrical Wiring Diagrams for Komatsu Hydraulic Loader WA490LC, with all the technical information to maintain, diagnose, repair, rebuild like professional mechanics.

Komatsu Hydraulic Loader WA490LC-10 workshop service repair manual includes:
* 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.

PRODUCT DETAILS:
Total Pages: 1,814 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English

CEBM025303 - Komatsu Hydraulic Loader WA490LC-10 Shop Manual.pdf

MAIN SECTIONS
CEBM025303...1
CONTENTS...2
SAFETY...17
  Safety Notice...17
    Important Safety Notice...17
    General Precautions...17
    Preparations For Work...19
    Precautions During Work...19
GENERAL...22
  HOW TO READ THE SHOP MANUAL...24
    Volumes...24
    Distribution And Updating...24
    Filing Method...24
    Revised Edition Mark...24
    Revisions...24
    Symbols...24
  HOISTING INSTRUCTIONS...25
    Hoisting...25
    Making Signs...25
    Precautions...25
      Precautions for Sling Work...25
      Precautions for Using Mobile Crane...26
      Precautions for Using Overhead Hoist Crane...26
    Selecting Wire Ropes...27
  HANDLING ELECTRIC EQUIPMENT AND HYDRAULIC COMPONENTS...28
    Points to Remember When Handling Electric Equipment...28
    Points to Remember When Handling Hydraulic Equipment...39
  PUSH PULL COUPLER...41
    Type 1...41
      Disconnection...41
      Connection...41
    Type 2...42
      Disconnection...42
      Connection...42
    Type 3...43
      Disconnection...43
      Connection...43
  EXPLANATION OF MAINTENANCE STANDARD TERMS...44
  HANDLING OF FUEL SYSTEM DEVICES...45
  HANDLING OF INTAKE SYSTEM PARTS...46
  STANDARD TIGHTENING TORQUE...47
    Bolts And Nuts...47
    Tightening Torque Of Hose Nuts...48
    Tightening Torque Of Split Flange Bolts...48
    Tightening Torque For Flared Nuts...48
    Tightening Torques for Split Flanged Bolts...49
    Tightening Torques For O-ring Boss Piping Joints...49
    Table Of Tightening Torques For O-ring Boss Plugs...49
    Tightening Torque For Hoses (Taper Seal Type And Face Seal Type)...50
      Tightening Torque For Face Seal Joints...50
  ELECTRIC WIRE CODE...51
    Classification By Thickness...51
    Classification By Color And Code...51
    How To Read Electric Wire Code...52
  PRECAUTIONS FOR OPERATIONS...55
    Precautions when Carrying Out Removal Work...55
    Precautions when Carrying Out Installation Work...56
    Precautions when Completing the Operation...57
  CONVERSION TABLES...58
    Method Of Using The Conversion Table...58
  COATING MATERIALS...64
  LIST OF ABBREVIATIONS...66
    List of Abbreviations Used in the Shop Manual...66
    List of Abbreviations Used in the Circuit Diagrams...70
01 GENERAL...71
  SPECIFICATION DIMENSION DRAWINGS...72
    Dimensions...72
    Working Ranges...73
  SPECIFICATIONS...74
  WEIGHT TABLE...78
  FUEL, COOLANT AND LUBRICANTS...80
10 STRUCTURE, FUNCTION & MAINTENANCE STD...83
  ENGINE AND COOLING SYSTEM...86
    Engine Related Parts...86
    Radiator, Oil Cooler and Aftercooler...88
    Cooling Fan Pump...90
      Operation of Pump...93
      Control of Delivery...96
      Servo Valve...97
      Cooling Fan Motor...99
    Hydraulic Motor...101
      Suction Valve...102
      Reversible Valve...104
      Safety Valve...106
  POWER TRAIN SYSTEM...108
    Power Train...108
    Swing Circle...110
    Swing machinery...112
    Final Drive...114
  UNDERCARRIAGE AND FRAME...116
    Track Frame and Idler Cushion...116
  HYDRAULIC SYSTEM...118
    Hydraulic Component Layout...118
    Valve Control...120
    Hydraulic Tank...121
      Oil Filler Port Cap...122
    CLSS...124
      Structure of CLSS...124
      Basic Principle...125
    Main Pump...130
      LS valve...135
      Operation...136
    PC Valve...140
      Operation...142
      LS(PC)-EPC Valve...148
      Operation...149
    Control Valve...152
      Functions and Operation by Valve...164
      Unload Valve...168
      LS Bypass Valve...170
      Pressure Compensation Valve...171
      Pressure Compensation Valve Inner Shuttle Valve...174
      Boom Regeneration Circuit...176
      Arm Regeneration Circuit...178
      Merge-Divider Valve...180
      LS Select Valve...183
      Self Pressure Reducing Valve...184
      Travel Junction Valve...187
      Travel PPC Shuttle Valve...190
      Boom Hydraulic Drift Preventive Valve...192
      Arm Drift Preventive Valve...195
      Suction Safety Valve For Drift Prevention Valve...198
      Arm Quick Return Valve...199
      Variable Back Pressure Valve...201
      Main Relief Valve...202
      2-Stage Safety-Suction Valve...204
      Swing Motor...206
      Swing Holding Brake...208
      Swing 2-Stage Relief Valve...211
      Swing Motor Reverse Prevention Valve...212
    Travel Motor...215
      Operation of Motor...218
      Operation of Parking Brake...220
      Brake Valve...222
      Safety Valve (Bidirectional 2-Stage Set Safety Valve)...223
    PPC Valve...227
      Work Equipment and Swing PPC Valve...227
    Travel PPC valve...233
    1st-line Attachment PPC Valve (with EPC valve)...237
      EPC valve...238
    Solenoid Valve...242
    Attachment Circuit Selector Valve...244
    Center Swivel Joint...246
      PPC Accumulator...247
  WORK EQUIPMENT...248
    Work Equipment...248
      Work Equipment Shims...249
  CAB AND ITS ATTACHMENTS...250
    Cab Mount and Cab Tipping Stopper...250
    ROPS Cab...251
  ELECTRICAL SYSTEM...252
    Engine Control...252
      Engine Controller Function...255
      Engine And Pump Combined Control Function...258
    Pump and Valve Control Function...264
      One-touch Power Maximizing Function...266
      Machine Push-up Function...268
      Auto-Deceleration Function...270
      Engine Automatic Warm-up Function...272
      Overheat Prevention Function...274
      Turbocharger Protection Function...275
      Swing Control Function...276
      Quick Warm-Up Function...278
      Swing 2-Stage Relief Function...278
      Travel Control Function...280
      PPC Lock Function...282
      Oil Flow Adjuster Function For Attachment...284
    Hydraulic Fan Control Function...286
      Fan Rotation Control...286
      Engine Output Control...287
      Fan Reverse Rotation Function...288
      System Component Part...290
      Pump Controller...294
      Resistor for PC-EPC valve...299
      CAN Terminating Resistor...300
  MACHINE MONITOR SYSTEM...301
    Machine Monitor...302
      Input and Output Signals...303
      Display...306
      Gauges...308
      Caution Monitor...310
      Pilot Monitor...314
    Switches...316
      Guidance ICON and Function Switch...318
      Operator Mode Function...322
      Service Mode Function...324
  KOMTRAX SYSTEM...326
    KOMTRAX Terminal...327
    Input and Output Signals...328
  SENSORS...330
    Ambient Pressure Sensor...330
    Engine Oil Pressure Sensor...331
    Charge Pressure Sensor...331
    Charge Temperature Sensor...332
    Coolant Temperature Sensor...332
    Ne (Crankshaft) Speed Sensor...333
    Bkup (Camshaft) Speed Sensor...333
    Common Rail Pressure Sensor...334
    EGR Valve Lift Sensor...335
    KVGT Speed Sensor...336
    KVGT Position Sensor...336
    Mass Air Flow and Temperature Sensor...337
    Dosing Fuel Pressure Sensor...338
    KDPF Differential Pressure and Outlet Pressure Sensor...338
    KDOC Inlet Temperature Sensor...339
    KDOC Outlet Temperature Sensor...339
    KDPF Outlet Temperature Sensor...340
    Crankcase Pressure Sensor...340
    Engine Oil Level Sensor...341
    Fuel Level Sensor...342
    Coolant Level Sensor...343
    Hydraulic Oil Temperature Sensor...343
    Front Pump Oil Pressure Sensor...344
    Rear Pump Oil Pressure Sensor...345
    PPC Oil Pressure Sensor...346
    Air Cleaner Clogging Sensor...347
    Front Pump Swash Plate Sensor...348
    Rear Pump Swash Plate Sensor...349
    Cooling Fan Speed Sensor...350
20 STD VALUE TABLES...351
  STANDARD SERVICE VALUE TABLES...352
    Standard Value Table for Engine...352
    Standard Value Table for Machine...354
      Engine Speed...354
      Travel of Control Valve Spool...354
      Travel of Control Lever...355
      Operating Effort of Control Lever and Pedal...355
      Hydraulic Oil Pressure...356
      Swing...357
      Travel...358
      Work Equipment...360
      Performance in Combined Operation...362
      Pump Swash Plate Sensor...362
      Characteristics of PC Flow Control...362
      Fan...363
      Main Pump...363
    Posture of Machine for Measuring Performance and Measurement Procedure...365
      Control Valve: Spool Travel...365
      Swing 1: Overrun When Stopping Swing, Time Taken to Start Swing, Time Taken to Swing...365
      Swing 2: Amount of Hydraulic Drift of Swing...365
      Travel 1: Travel Speed, Idle Running (Without Load)...365
      Travel 2: Travel Speed (Actual Run), Travel Deviation...366
      Travel 3: Travel Deviation...366
      Travel 4: Hydraulic Drift of Travel...366
      Work Equipment 1: Hydraulic Drift of Work Equipment...366
      Work Equipment 2: Boom Speed...367
      Work Equipment 3: Arm Speed...367
      Work Equipment 4: Bucket Speed...367
      Work Equipment 5: Boom Time Lag...367
      Work Equipment 6: Arm Time Lag...368
      Work Equipment 7: Bucket Time Lag...368
      Work Equipment 8: PC Flow Characteristics Control...368
30 TESTING & ADJUSTING...369
  GENERAL INFORMATION...372
    Tools for Testing, Adjusting, and Troubleshooting...372
    Sketch of Tools for Testing and Adjusting...378
  ENGINE AND COOLING SYSTEM...382
    Checking Engine Speed...382
    Measuring Boost Pressure...384
    Measuring Exhaust Gas Temperature...386
    Measuring Exhaust Gas Color...388
    Measuring and Adjusting Valve Clearance...390
      Testing...390
      Adjusting...393
    Measuring Compression Pressure...394
    Measuring Engine Oil Pressure...399
    Measuring EGR Valve and KVGT Oil Pressure...401
    Measuring Fuel Pressure...403
    Measuring Fuel Leakage and Return...405
      Testing...405
      Measuring return rate from injector...407
    Bleeding Air from Fuel System...409
      Bleeding Air...410
    Checking Fuel Circuit for Leakage...413
    Handling Cylinder Cut-Out Mode Operation...414
    Handling No-Injection Cranking Operation...414
    Checking and Adjusting Air Conditioner Compressor Belt Tension...415
      Checking...415
      Adjusting...416
    Replacing Fan Belt...417
      Replacing...417
    Fuel Doser Cleaning Procedure...419
      Removal...419
      Cleaning...420
      Installation...422
    Writing Compensation Values at Replacement of Injector and Engine Controller...423
      Connection of PC...423
      Starting INSITE...424
  POWER TRAIN...429
    Testing Swing Circle Bearing Clearance...429
      Testing...429
  UNDERCARRIAGE AND FRAME...431
    Testing and Adjusting Track Shoe Tension...431
      Testing...431
      Adjusting...431
  HYDRAULIC SYSTEM...433
    Releasing Remaining Pressure from Hydraulic Circuit...433
    Measuring and Adjusting of Oil Pressure in Work Equipment, Swing, and Travel Circuits...435
      Testing...435
      Adjusting...437
    Measuring Oil Pressure in Control Circuit...441
    Measuring and Adjusting Oil Pressure in Pump PC Control Circuit...443
      Testing...443
      Adjusting...445
    Measuring and Adjusting Oil Pressure in Pump LS Control Circuit...447
      Testing...447
      Checking Oil Pressure with Sensor Adapter (Special Tool)...451
      Adjusting...452
    Measuring Solenoid Valve Output Pressure...453
      Testing...453
      Operating Condition...455
    Measuring PPC Valve Output Pressure...457
    Adjusting Play of Work Equipment and Swing PPC Valves...459
    Testing Pump Swash Plate Sensor...460
    Measuring Fan Pump Circuit Oil Pressure...461
    Checking Fan Pump EPC Current...462
    Measuring Fan Pump EPC Solenoid Valve Output Pressure...463
    Isolating the Parts Causing Hydraulic Drift in Work Equipment...465
    Measuring Oil Leakage...467
    Bleeding Air From Hydraulic Circuit...471
      Bleeding Air...472
  CAB AND ITS ATTACHMENTS...475
    Checking Cab Tipping Stopper...475
    Adjusting Mirrors...476
  ELECTRICAL SYSTEM...479
    Special Functions of Machine Monitor...479
      Upper Part Of Machine Monitor (Display Portion)...480
      Upper Part of Machine Monitor (Switch Portion)...480
      Lower Part of Machine Monitor (Switch Portion)...480
    Ordinary Functions and Special Functions of Machine Monitor...480
      Operator Mode (Outline)...483
      Service Mode...502
    Angle Adjustment of Rear View Camera...566
    Handling Voltage Circuit of Engine Controller...568
    Handling Battery Disconnect Switch...569
    Testing Diodes...570
  PM CLINIC...571
    PM Clinic Service...571
      Check Items Related to Engine...573
      Check Items Related to Oil Pressure...574
    Check Sheet...575
      1. Engine...575
      2. Work equipment speed...576
      3. Hydraulic drift of work equipment...576
      4. Hydraulic circuit...577
      Visual Check of Welded Structures...580
    Undercarriage Inspection Report...581
40 TROUBLESHOOTING...583
  GENERAL INFORMATION ON TROUBLESHOOTING...591
    Points to Remember When Troubleshooting...591
    Sequence of Events in Troubleshooting...593
    Checks Before Troubleshooting...595
    Testing Procedure Before Troubleshooting...597
      Walk-Around Check...597
      Checking in Accordance with Checking Procedure...599
    Preparation Work for Troubleshooting of Electrical System...605
      Preparation Work...605
    Classification and Procedure for Troubleshooting...610
      Classification of Troubleshooting...610
      Procedure for Troubleshooting...610
    Symptom of Probable Failure and Troubleshooting No...614
    Information Mentioned in Troubleshooting Table...618
  DIAGNOSTIC PROCEDURE FOR WIRING HARNESS...620
    Open Circuit Of Pressure Sensor System...620
    Connector list...623
    Layout of connectors...628
    Connection Table for Connector Pin Numbers...634
    T-Branch Box and T-Branch Adapter Table...669
    Fuse List and Location...673
      Connection Table of Fuse Box...673
      Locations of Fusible Links...674
      Location of Fuse Box and Fuse Numbers...674
    Precautions for Cleaning and Replacing KDPF (KCSF, KDOC)...675
  FAILURE CODE (DISPLAY OF CODE)...678
    Failure Codes Table...678
    879AKA - Air Conditioner Inner Sensor Disconnection...685
    879AKB - Air Conditioner Inner Sensor Disconnection...685
    879BKA - A/C Outer Sensor Open Circuit...685
    879BKB - A/C Outer Sensor Short Circuit...685
    879CKA - Ventilating Sensor Open Circuit...685
    879CKB - Ventilating Sensor Short Circuit...685
    879DKZ - Sunlight Sensor Open or Short Circuit...685
    879EMC - Ventilation Damper Abnormality...686
    879FMC - Air Mix Damper Abnormality...686
    879GKX - Refrigerant Abnormality...686
    989L00 - Engine Controller Lock Caution 1...687
    989M00 - Engine Controller Lock Caution 2...687
    989N00 - Engine Controller Lock Caution 3...688
    A1U0N3 - KDPF Dry Request (HC Release) 1...689
    A1U0N4 - KDPF Dry Request (HC Release) 2...691
    AA10NX - Air Cleaner Clogging...694
    AB00KE - Charge Voltage Low...696
    B@BAZG - Engine Oil Pressure Low...698
    B@BAZK - Eng Oil Level Low...700
    B@BCNS - Engine Coolant Overheat...702
    B@BCZK - Radiator Coolant Level Low...704
    B@HANS - Hyd Oil Overheat...706
    CA115 - Eng Ne and Bkup Speed Sens Error...707
    CA122 - Chg Air Press Sensor High Error...708
    CA123 - Chg Air Press Sensor Low Error...710
    CA131 - Throttle Sensor High Error...712
    CA132 - Throttle Sensor Low Error...714
    CA135 - Eng Oil Press Sensor High Error...716
    CA141 - Eng Oil Press Sensor Low Error...718
    CA144 - Coolant Temp Sens High Error...720
    CA145 - Coolant Temp Sens Low Error...722
    CA153 - Chg Air Temp Sensor High Error...724
    CA154 - Chg Air Temp Sensor Low Error...726
    CA187 - Sensor 2 Supply Volt Low Error...728
    CA221 - Ambient Press Sensor High Error...730
    CA222 - Ambient Press Sensor Low Error...732
    CA227 - Sensor 2 Supply Volt High Error...734
    CA234 - Eng Overspeed...735
    CA238 - Ne Speed Sensor Supply Volt Error...736
    CA239 - Ne Speed Sens Supply Volt High Error...738
    CA271 - IMV/PCV1 Short Error...740
    CA272 - IMV/PCV1 Open Error...742
    CA273 - PCV2 Short Error...744
    CA274 - PCV2 Open Error...746
    CA322 - Inj #1 (L#1) Open/Short Error...748
    CA323 - Inj #5 (L#5) Open/Short Error...750
    CA324 - Inj #3 (L#3) Open/Short Error...752
    CA325 - Inj #6 (L#6) Open/Short Error...754
    CA331 - Inj #2 (L#2) Open/Short Error...756
    CA332 - Inj #4 (L#4) Open/Short Error...758
    CA343 - ECM Critical Internal Failure...760
    CA351 - Injectors Drive Circuit Error...761
    CA352 - Sensor 1 Supply Volt Low Error...762
    CA356 - Mass Air Flow Sensor High Error...764
    CA357 - Mass Air Flow Sensor Low Error...766
    CA386 - Sensor 1 Supply Volt High Error...768
    CA441 - Battery Voltage Low Error...770
    CA442 - Battery Voltage High Error...772
    CA449 - Rail Press Very High Error...773
    CA451 - Rail Press Sensor High Error...774
    CA452 - Rail Press Sensor Low Error...776
    CA515 - Rail Press Sens Sup Volt Low Error...778
    CA516 - Rail Press Sens Sup Volt High Error...780
    CA553 - Rail Press High Error...782
    CA555 - Crankcase Press High Error 1...783
    CA556 - Crankcase Press High Error 2...784
    CA559 - Supply Pump Press Low Error 1...785
    CA595 - Turbo Speed High Error 2...789
    CA687 - Turbo Speed Low Error...790
    CA689 - Eng Ne Speed Sensor Error...792
    CA691 - Intake Air Temp Sens High Error...794
    CA692 - Intake Air Temp Sens Low Error...796
    CA697 - ECM Internal Temp Sensor High Error...798
    CA698 - ECM Internal Temp Sensor Low Error...799
    CA731 - Eng Bkup Speed Sens Phase Error...800
    CA778 - Eng Bkup Speed Sensor Error...801
    CA1117 - Partial Data Lost Error...804
    CA1664 - KDOC Malfunction...806
    CA1691 - Regeneration Ineffective...808
    CA1695 - Sensor 5 Supply Volt High Error...812
    CA1696 - Sensor 5 Supply Volt Low Error...814
    CA1843 - Crankcase Press Sens High Error...816
    CA1844 - Crankcase Press Sens Low Error...818
    CA1879 - KDPF Differential P Sensor High Error...821
    CA1881 - KDPF Differential P Sensor Low Error...823
    CA1883 - KDPF Differential Pressure Sensor In Range Error...825
    CA1921 - KDPF Soot Load High Error 1...829
    CA1922 - KDPF Soot Load High Error 2...831
    CA1923 - Doser Solenoid Valve 1 High Error...836
    CA1924 - Fuel Doser Sol Valve 1 Low Error...838
    CA1925 - Doser Solenoid Valve 1 In Range Error...841
    CA1927 - Doser Fuel Pressure Sensor High Error...844
    CA1928 - Doser Fuel Pressure Sensor Low Error...846
    CA1942 - Crankcase Press Sens In Range Error...848
    CA1963 - Doser Solenoid Valve 1 Servo Error...850
    CA1977 - Doser Open Short Circuit Error...852
    CA1993 - KDPF Differential Pressure Low Error...854
    CA2185 - Throt Sensor Sup Volt High Error...856
    CA2186 - Throt Sensor Sup Volt Low Error...858
    CA2249 - Rail Press Very Low Error...860
    CA2265 - Fuel Feed Pump Open Error...862
    CA2266 - Fuel Feed Pump Short Error...864
    CA2271 - EGR Valve Pos Sens High Error...866
    CA2272 - EGR Valve Pos Sens Low Error...868
    CA2349 - EGR Valve Solenoid Low Error...870
    CA2353 - EGR Valve Solenoid current High Error...872
    CA2357 - EGR Valve Servo Error...874
    CA2373 - Exhaust Manifold Press Sens High Error...876
    CA2374 - Exhaust Manifold Press Sens Low Error...878
    CA2375 - EGR Orifice Temp Sens High Error...880
    CA2376 - EGR Orifice Temp Sens Low Error...882
    CA2381 - KVGT Pos Sens High Error...884
    CA2382 - KVGT Pos Sens Low Error...886
    CA2383 - KVGT Solenoid Open Error...890
    CA2386 - KVGT Solenoid Short Error...892
    CA2387 - KVGT Valve Servo Error...894
    CA2554 - Exh Manifold Press Sens In Range Error...895
    CA2555 - Grid Htr Relay Open Circuit Error...896
    CA2556 - Grid Htr Relay Volt High Error...898
    CA2637 - KDOC Blocked...900
    CA2639 - Manual Stationary Regeneration Request...902
    CA2732 - Dozer Solenoid Valve 2 High Error...904
    CA2733 - Doser Solenoid Valve 2 Low Error...906
    CA2741 - Dozer Solenoid Valve 1 Connection Error...908
    CA2765 - Injector Trim Data Mismatch...910
    CA2878 - Doser Solenoid Valve 2 Servo Error...912
    CA2973 - Chg Air Press Sensor In Range Error...919
    CA3133 - KDPF Outlet Press Sens High Error...920
    CA3134 - KDPF Outlet Press Sens Low Error...922
    CA3135 - KDPF Outlet Press Sens In Range Error...924
    CA3251 - KDOC Inlet Temp High Error...928
    CA3253 - KDOC Temp Error - Non Regeneration...931
    CA3254 - KDOC Outlet Temp High Error 1...933
    CA3255 - KDPF Temp Error - Non Regeneration...936
    CA3256 - KDPF Outlet Temp High Error 1...937
    CA3311 - KDOC Outlet Temp High Error 2...938
    CA3312 - KDPF Outlet Temp High Error 2...939
    CA3313 - KDOC Inlet Temp Sensor Low Error...942
    CA3314 - KDOC Inlet Temp Sens High Error...946
    CA3315 - KDOC Inlet Temp Sens In Range Error...950
    CA3316 - KDOC Outlet Temp Sens Low Error...954
    CA3317 - KDOC Outlet Temp Sens High Error...958
    CA3318 - KDOC Outlet Temp Sens In Range Error...962
    CA3319 - KDPF Outlet Temp Sens High Error...966
    CA3321 - KDPF Outlet Temp Sens Low Error...970
    CA3322 - KDPF Outlet Temp Sens In Range Error...974
    CA3419 - Mass Air Flow (MAF) Sensor Sup Volt High Error...978
    CA3421 - Mass Air Flow (MAF) Sensor Sup Volt Low Error...980
    D110KB - Battery Relay Output Voltage...982
    D19JKZ - Personal Code Relay Abnormality...984
    D811MC - KOMTRAX Error...987
    D862KA - GPS Antenna Open Circuit...987
    D8AQKR - CAN2 Discon (KOMTRAX)...992
    DA20MC - Pump Controller...993
    DA22KK - Pump Solenoid Power Low Error...994
    DA25KP - 5 V Sensor 1 Power Abnormality...996
    DA29KQ - Model Selection Abnormality...1000
    DA2QKR - CAN2 Discon (Pump Con)...1008
    DA2RKR - CAN1 Discon (Pump Con)...1011
    DAF0MB - Monitor Memory Error...1012
    DAF0MC - Monitor Error...1013
    DAF8KB - Camera Power Supply Short Circuit...1014
    DAF9KQ - Model Selection Abnormality...1016
    DAFGMC - GPS Module Error...1017
    DAFQKR - CAN2 Discon...1022
    DAZ9KQ - A/C Model Selection Abnormality...1023
    DAZQKR - CAN2 Discon (AC)...1024
    DB2QKR - CAN2 Discon (Engine Con)...1030
    DB2RKR - CAN1 Discon (Engine Con)...1036
    DGH2KA - Hyd Oil Temp Sensor Open...1042
    DGH2KB - Hyd Oil Temp Sensor Short Circuit...1044
    DHA4KA - Air Cleaner Clog Sensor Open Circuit...1046
    DHPAMA - F Pump Press Sensor Abnormality...1047
    DHPBMA - R Pump Press Sensor Abnormality...1050
    DHS3MA - Arm In PPC Press Sensor Abnormality...1053
    DHS4MA - Bucket Curl PPC Press Sensor Abnormality...1056
    DHS8MA - Boom Raise PPC Press Sensor Abnormality...1060
    DHS9MA - Boom Lower PPC Press Sensor Abnormality...1064
    DHSAMA - Swing RH PPC Press Sensor Abnormality...1068
    DHSBMA - Swing LH PPC Press Sensor Abnormality...1072
    DHSCMA - Arm Out PPC Press Sensor Abnormality...1076
    DHSDMA - Bucket Dump PPC Press Sensor Abnormality...1080
    DHSFMA - Travel Fwd LH PPC Press Sensor Abnormality...1084
    DHSGMA - Travel Fwd RH PPC Press Sensor Abnormality...1088
    DHSHMA - Travel Rev LH PPC Press Sensor Abnormality...1092
    DHSJMA - Travel Rev RH PPC Press Sensor Abnormality...1096
    DKR0MA - F Pump Swash Plate Sensor Abnormality...1100
    DKR1MA - R Pump Swash Plate Sensor Abnormality...1104
    DLM3KB - Fan Speed Sensor: Short circuit...1110
    DV20KB - Travel Alarm Short Circuit...1112
    DW43KA - Travel Speed Sol Open Circuit...1114
    DW43KB - Travel Speed Sol Short Circuit...1116
    DW45KA - Swing Brake Sol Open Circuit...1118
    DW45KB - Swing Brake Sol Short Circuit...1122
    DW91KA - Travel Junction Sol Open Circuit...1130
    DW91KB - Travel Junction Sol Short Circuit...1132
    DWA2KA - Attachment Sol Open Circuit...1134
    DWA2KB - Attachment Sol Short Circuit...1136
    DWK0KA - 2-Stage Relief Sol Open Circuit...1138
    DWK0KB - 2-Stage Relief Sol Short Circuit...1140
    DWK2KA - Variable Back Press Sol Open Circuit...1142
    DWK2KB - Variable Back Press Sol Short Circuit...1144
    DWK8KA - Swing Press Cut-Off Sol Open Circuit...1146
    DWK8KB - Swing Press Cut-Off Sol Short Circuit...1148
    DXA8KA - PC-EPC (F) Sol Open Circuit...1154
    DXA8KB - PC-EPC (F) Sol Short Circuit...1156
    DXA9KA - PC-EPC (R) Sol Open Circuit...1158
    DXA9KB - PC-EPC (R) Sol Short Circuit...1162
    DXE0KA - LS-EPC Sol Open Circuit...1164
    DXE0KB - LS-EPC Sol Short Circuit...1166
    DXE4KA - Attachment Flow EPC Open Circuit...1168
    DXE4KB - Attachment Flow EPC Short Circuit...1170
    DXE5KA - Merge-divide Main Sol Open Circuit...1172
    DXE5KB - Merge-divide Main Sol Short Circuit...1174
    DXE6KA - Merge-divide LS Sol Open Circuit...1176
    DXE6KB - Merge-divide LS Sol Short Circuit...1178
    DY20KA - Wiper Working Abnormality...1180
    DY20MA - Wiper Parking Abnormality...1184
    DY2EKB - Wiper Drive (Rev) Short Circuit...1188
  ELECTRICAL SYSTEM (E-MODE)...1190
    E-1 Engine Does Not Start (Engine Does Not Rotate)...1190
    E-2 Manual Pre-Heating System Does Not Work...1198
    E-3 Automatic Pre-Heating System Does Not Work...1202
    E-4 Pre-Heating Monitor Does Not Light Up When Pre-Heater is Operated...1204
    E-5 When Starting Switch is Turned to ON Position, Machine Monitor Displays Nothing...1206
    E-6 When Starting Switch is Turned to ON Position (Before Starting Engine), Engine Oil Level Monitor Lights Up in Yellow...1209
    E-7 When Starting Switch is Turned to ON Position (Before Starting Engine), Radiator Coolant Level Monitor Lights Up in Yellow...1209
    E-8 Coolant Temperature Monitor Lights Up in White While Engine is Running...1210
    E-9 Hydraulic Oil Temperature Monitor Lights Up in White While Engine is Running...1210
    E-10 Charge Level Monitor Lights Up While Engine is Running...1211
    E-11 Fuel Level Monitor Lights Up in Red While Engine is Running...1211
    E-12 Air Cleaner Clogging Monitor Lights Up in Yellow While Engine is Running...1211
    E-13 Engine Coolant Temperature Monitor Lights Up in Red While Engine is Running...1212
    E-14 Hydraulic Oil Temperature Monitor Lights Up in Red While Engine is Running...1212
    E-15 Engine Oil Pressure Monitor Lights Up in Red While Engine is Running...1213
    E-16 Fuel Gauge Display Does Not Move from Minimum or Maximum...1214
    E-17 Display of Fuel Gauge Differs from Actual Fuel Level...1216
    E-18 Coolant Temperature Gauge Indicate Either Min or Max and Does Not Move...1217
    E-20 Hydraulic Oil Temperature Gauge Indicate Either Min or Max and Does Not Move...1220
    E-21 Hydraulic Oil Temperature Gauge Differs from Actual oil Temperature...1222
    E-22 Machine Monitor Does Not Display Partially...1223
    E-23 Function Switch Does Not Work...1223
    E-24 Automatic Pre-Heating System Does Not Work (In Cold Weather)...1224
    E-25 Auto-Deceleration Monitor Does Not Light Up or Does Not Go Out When Auto-Deceleration Switch is Operated...1225
    E-26 Auto-Deceleration is Not Actuated or Canceled When Lever is Operated...1226
    E-27 Working Mode Selector Screen Selection Screen is Not Displayed When Working Mode Switch is Operated...1227
    E-28 Engine or Hydraulic Pump Setting Does Not Change When Working Mode is Changed...1227
    E-29 Travel Speed Monitor Does Not Change When Travel Speed Switch is Operated...1227
    E-30 Travel Speed Does Not Change When Travel Speed is Shifted...1228
    E-31 Alarm Buzzer Does Not Stop Sounding...1229
    E-32 When Starting Switch is Turned OFF, Service Meter is Not Displayed...1229
    E-33 Machine Monitor Service Mode Cannot be Selected...1230
    E-34 All of Work Equipment, Swing and Travel Does Not Work...1232
    E-35 All of Work Equipment, Swing and Travel Can Not be Locked...1234
    E-36 Machine Can Not Swing While Swing Brake Cancel Switch is Canceled...1236
    E-37 Swing Brake Does Not Operate While Swing Brake Cancel Switch is set to NORMAL position...1238
    E-38 One-Touch Power Maximizing Function Does Not Work Or Pilot Monitor is Not Displayed...1240
    E-39 One-Touch Power Maximizing Function Cannot be Released...1243
    E-40 Travel Alarm Does Not Sound When Machine Travels...1244
    E-41 Travel Alarm Does Not Stop Sounding When Machine Stops...1246
    E-42 Horn Does Not Sound...1248
    E-43 Horn Does Not Stop Sounding...1250
    E-44 Wiper Monitor Does Not Light Up or Go Out When Wiper Switch is Operated...1251
    E-45 Wiper Does Not Operate When Wiper Switch is Operated...1252
    E-46 Window Washer Does Not Operate When Window Washer Switch is Operated...1254
    E-47 Boom LOWER Indication is Not Displayed Properly With Monitoring Function...1254
    E-48 Arm DUMP Indication is Not Displayed Properly With Monitoring Function...1254
    E-49 Arm IN Indication is Not Displayed Properly With Monitoring Function...1254
    E-50 Boom RAISE Indication is Not Displayed Properly With Monitoring Function...1255
    E-51 Bucket CURL Indication is Not Displayed Properly With Monitoring Function...1255
    E-52 Bucket DUMP Indication is Not Displayed Properly With Monitoring Function...1255
    E-53 Swing Indication is Not Displayed Properly With Monitoring Function...1255
    E-54 Travel Indication is Not Displayed Properly With Monitoring Function...1256
    E-55 Attachment is Not Displayed Properly With Monitoring Function...1257
    E-56 Attachment Hydraulic Circuit Cannot be Changed...1260
    E-57 KOMTRAX System Does Not Work Properly...1262
    E-58 Machine Push-up Function is Not Canceled...1264
  HYDRAULIC AND MECHANICAL SYSTEM (H-MODE)...1268
    Information Mentioned in Troubleshooting Table (H Mode)...1268
    Failure Mode and Cause Table...1270
    H-1 All of Work Equipment, Swing and Travel Operation Lacks Speed or Power...1276
    H-2 Engine Speed Lowers Significantly or Engine Stalls...1278
    H-3 All of Work Equipment, Swing and Travel Does Not Work...1280
    H-4 Unusual Sound is Heard from Around Hydraulic Pump...1280
    H-5 Fine Control Performance or Response is Poor...1281
    H-6 Boom Operation Lacks Speed or Power...1282
    H-7 Arm Operation Lacks Speed or Power...1286
    H-8 Bucket Operation Lacks Speed or Power...1290
    H-9 Work Equipment Does Not Move in Single Operation...1293
    H-10 Hydraulic Drift of Boom is Large...1294
    H-11 Time Lag of Work Equipment is Large...1298
    H-13 One-Touch Power Maximizing Function Does Not Work...1300
    H-14 Machine Push Up Function Does Not Work...1301
    H-15 In Combined Operation of Work Equipment, Equipment Having Heavier Load Moves Slower...1302
    H-16 In Combined Operations of Swing and Boom RAISE, Boom Rising Speed is Low...1303
    H-17 Travel Speed Drops Largely In Combined Operations of Swing and Travel...1303
    H-18 Machine Does Not Travel Straight...1304
    H-19 Travel Speed is Too Low...1306
    H-20 Machine is Hard to Steer or Travel Power is Low...1308
    H-21 Travel Speed Does Not Change, or Travel Speed is Too Low or High...1311
    H-22 One of Tracks Does Not Run...1312
    H-23 Upper Structure Does Not Swing to the Right or Left...1313
    H-24 Swing Acceleration is Poor or Swing Speed is Low...1315
    H-25 Upper Structure Overruns Excessively When it Stops Swinging...1317
    H-26 Shock is Large When Upper Structure Stops Swinging...1319
    H-27 Large Unusual Noise is Heard When Upper Structure Stops Swinging...1320
    H-28 Swing Drift On a Slope is Large...1321
    H-29 Attachment circuit cannot be Changed...1323
    H-30 Oil Flow in Attachment Circuit Cannot be Controlled...1324
  ENGINE (S-MODE)...1328
    Information Mentioned in Troubleshooting Table (S-Mode)...1328
    S-1 When Starting Switch is Turned to START Position, Engine Does Not Crank...1329
    S-2 When Engine Cranks, Exhaust Smoke Does Not Come Out...1330
    S-3 Fuel is Being Injected But Engine Does Not Start (Incomplete Combustion: Engine Cranks but Does Not Start)...1331
    S-4 Start ability is Poor...1333
    S-5 Engine Does Not Pick Up Smoothly...1335
    S-6 Engine Stops During Operation...1337
    S-7 Engine Runs Rough or is Unstable...1339
    S-8 Engine Lacks Power...1340
    S-9 Exhaust Smoke is Black (KDPF Gets Clogged in a Short Time)...1342
    S-10 Engine Oil Consumption is Excessive...1344
    S-11 Oil Becomes Contaminated Early...1345
    S-12 Fuel Consumption is Excessive...1346
    S-13 Oil is in Coolant (or Coolant Spurts or Coolant Level Goes Down)...1347
    S-14 Oil Pressure Drops...1348
    S-15 Fuel is Contaminated in Engine Oil...1350
    S-16 Coolant Mixes in Engine Oil (Oil Becomes Cloudy White)...1351
    S-17 Coolant Temperature Rises Too High (Overheating)...1352
    S-18 Unusual Noise is Heard...1353
    S-19 Vibration is Excessive...1354
    S-20 Air Cannot be Bled from Fuel Circuit...1355
    S-21 Automatic Regeneration is Operated Frequently...1356
    S-22 Active Regeneration is Operated for Long...1357
    S-23 White Smoke Comes Out in the Process of Active Regeneration...1358
50 DISASSEMBLY & ASSEMBLY...1359
  HOW TO READ THIS SECTION...1364
    Removal and Installation of Assemblies...1364
      Special Tools...1364
      Removal...1364
      Installation...1364
    Disassembly and Assembly of Assemblies...1365
      Special Tools...1365
      Disassembly...1365
      Assembly...1366
    Coating Materials List...1367
  SPECIAL TOOLS LIST...1372
    Sketches of Special Tools...1376
  CONNECTOR REPAIR PROCEDURES...1382
    Stripping Insulation...1382
    Wire Inspection...1382
    Contact Terminal Removal (HD30 Type)...1383
    Crimping Contact Terminal (HD30 Type)...1384
    Insertion of Contact Terminal (HD30 Type)...1385
    Contact Terminal Removal (DT Type)...1386
    Crimping Contact Terminal (DT Type)...1387
    Insertion of Contact Terminal (DT Type)...1388
  ENGINE AND COOLING SYSTEM...1389
    Supply Pump Assembly...1389
      Removal...1389
      Installation...1394
    Fuel Injector Assembly...1398
      Removal...1398
      Installation...1402
    Cylinder Head Assembly...1408
      Removal...1408
      Installation...1416
    Radiator Assembly...1422
      Removal...1422
      Installation...1424
    Hydraulic Oil Cooler Assembly...1426
      Removal...1426
      Installation...1428
    Aftercooler Assembly...1430
      Removal...1430
      Installation...1432
    Cooling Fan and Fan Motor Assembly...1434
      Removal...1434
      Installation...1438
    Engine and Main Pump Assembly...1440
      Removal...1440
      Installation...1450
      Engine Front Oil Seal...1454
      Removal...1454
      Installation...1456
    Engine Rear Oil Seal...1460
      Removal...1460
      Installation...1462
    Engine Hood Assembly...1466
      Removal...1466
      Installation...1466
    KDPF Assembly...1467
      Removal...1467
      Installation...1469
    KCCV Assembly...1470
      Removal...1470
      Installation...1470
    Air Cleaner Assembly...1472
      Removal...1472
      Installation...1473
  POWER TRAIN...1474
    Travel Motor and Final Drive Assembly...1474
      Removal...1474
      Installation...1475
    Final Drive...1476
      Disassembly...1476
      Assembly...1480
    Swing Motor and Swing Machinery...1486
      Removal...1486
      Installation...1487
    Swing Machinery...1488
      Disassembly...1488
      Assembly...1492
    Swing Circle Assembly...1497
      Removal...1497
      Installation...1497
  UNDERCARRIAGE AND FRAME...1498
    Separation and Connection of Track Shoe Assembly...1498
      Separation Track...1498
      Connecting Track...1499
    Sprocket...1501
      Removal...1501
      Installation...1501
    Idler and Idler Cushion Assembly...1502
      Removal...1502
      Installation...1502
    Idler...1503
      Disassembly...1503
      Assembly...1504
    Idler Cushion...1507
      Disassembly...1507
      Assembly...1508
    Track Roller...1510
      Assembly...1510
    Carrier Roller...1511
      Assembly...1511
    Revolving Frame Assembly...1513
      Removal...1513
      Installation...1515
    Counterweight Assembly...1517
      Removal...1517
      Installation...1519
  HYDRAULIC SYSTEM...1520
    Center Swivel Joint Assembly...1520
      Removal...1520
      Installation...1521
    Center Swivel Joint...1522
      Disassembly...1522
      Assembly...1523
    Hydraulic Tank Assembly...1524
      Removal...1524
      Installation...1527
    Main Pump Assembly...1530
      Removal...1530
      Installation...1533
    Control Valve Assembly...1536
      Removal...1536
      Installation...1540
      Procedures for Replacing Pressure Compensation Valve Seal Rings...1541
      Assembly...1543
    Work Equipment PPC Valve...1546
      Disassembly...1546
      Assembly...1546
    Travel PPC Valve...1548
      Disassembly...1548
      Assembly...1548
  WORK EQUIPMENT...1550
    Work Equipment...1550
      Removal...1550
      Installation...1552
    Work Equipment Cylinder...1554
      Disassembly...1554
      Assembly...1557
  CAB AND ITS ATTACHMENTS...1560
    Operator's Cab Assembly...1560
      Removal...1560
      Installation...1566
    Operator Cab Glass (Fixed Glass)...1568
      Removal...1569
      Installation...1570
    Front Window Assembly...1580
      Removal...1580
      Installation...1583
    Floor Frame Assembly...1588
      Removal...1588
      Installation...1595
    Air Conditioner Unit Assembly...1598
      Removal...1598
      Installation...1603
    Operator's Seat...1604
      Removal...1604
      Installation...1606
    Seat Belt...1608
      Removal...1608
      Installation...1609
    Front Wiper Assembly...1610
      Removal...1610
      Installation...1616
  ELECTRIC SYSTEM...1622
    Air Conditioner Compressor Assembly...1622
      Removal...1622
      Installation...1623
    Air Conditioner Condenser Assembly...1626
      Removal...1626
      Installation...1626
    Engine Controller Assembly...1628
      Removal...1628
      Installation...1629
    Pump Controller Assembly...1630
      Removal...1630
      Installation...1632
    Machine Monitor Assembly...1634
      Removal...1634
      Installation...1636
    Pump Swash Plate Sensor...1638
      Removal...1638
      Installation...1638
    Mass Air Flow and Temperature Sensor...1640
      Removal...1640
      Installation...1641
    KOMTRAX Terminal Assembly...1642
      Removal...1642
      Installation...1643
60 MAINTENANCE STD...1645
  ENGINE AND COOLING SYSTEM...1646
    Engine Mounts...1646
    Cooling System...1648
      Cooling Fan Pump...1650
      Servo Valve...1651
      Cooling Fan Motor...1652
  POWER TRAIN...1653
    Swing Circle...1653
    Swing Machinery...1654
    Final Drive...1656
  UNDERCARRIAGE AND FRAME...1658
    Sprocket...1658
    Track Frame and Idler Cushion...1660
    Idler...1662
    Track Roller...1664
    Carrier Roller...1666
    Track Shoe...1668
    Triple Grouser Shoe...1671
  HYDRAULIC SYSTEM...1672
    Main pump...1672
    Control Valve...1675
      General View...1675
    Swing Motor...1686
    Travel Motor...1689
  PPC Valve...1692
    Work Equipment and Swing PPC Valve...1692
      Travel PPC Valve...1696
      1st-Line Attachment PPC Valve (with EPC Valve)...1700
      EPC Valve...1702
    Solenoid Valve...1704
    Attachment Circuit Selector Valve...1705
      For Low-Pressure Circuit...1705
    Center Swivel Joint...1706
  WORK EQUIPMENT...1707
    Work equipment...1707
    Dimensions of Arm...1712
    Work Equipment Cylinder...1718
      Boom Cylinder...1718
    Arm Cylinder...1719
    Bucket Cylinder...1720
80 AIR CONDITIONER...1721
  AIR CONDITIONER...1723
    Precautions for Refrigerant...1723
  AIR CONDITIONER COMPONENT...1724
  STRUCTURE AND FUNCTION...1727
    Overview...1728
      Compression (Compressor)...1728
      Condensation (Condenser)...1728
      Expansion (Expansion valve)...1728
      Evaporation (Evaporator)...1728
  AIR CONDITIONER UNIT...1730
    Function...1731
    Temperature Control...1731
    Over-cooling (Freezing) Prevention...1731
    Air Flow Adjustment...1731
    Vent (Mode) Changeover...1731
    FRESH/RECIRC Air Changeover...1732
    Automatic Air Conditioner...1732
      Selection Pattern Of Vent (Mode) Changeover Door...1732
      Selection Pattern Of Air Mix Door (6)...1732
    Functions of Major Components...1733
      Evaporator...1733
      Heater Core...1733
      Evaporator Temperature Sensor...1733
      Servomotor...1733
      Expansion Valve...1734
  DUAL PRESSURE SWITCH...1736
  AIR CONDITIONER CONTROLLER...1736
  AIR CONDITIONER COMPRESSOR...1737
  AIR CONDITIONER CONDENSER...1738
  RECEIVER DRIER...1739
  SUNLIGHT SENSOR...1740
  OUTSIDE AIR TEMPERATURE SENSOR...1740
  PROCEDURE FOR TESTING AND TROUBLESHOOTING...1741
    Basic Inspection and Troubleshooting Sequence...1742
    Air Conditioner Circuit Diagram and Arrangement of Connector Pins...1743
    System Diagram...1744
    Air Conditioner Controller Input and Output Signals...1745
  PARTS AND CONNECTORS LAYOUT...1747
    Layout of Air Conditioner Related Parts and Connectors...1748
  TESTING AIR LEAKAGE (DUCT)...1751
  TESTING WITH SELF-DIAGNOSIS FUNCTION...1753
    How to Enter Air Conditioner Electrical Systems Screen in Service Mode of the Machine Monitor...1754
  TESTING VENT (MODE) CHANGEOVER...1756
  TESTING FRESH/RECIRC AIR CHANGEOVER...1758
  TESTING SUNLIGHT SENSOR...1759
  TESTING (DUAL) PRESSURE SWITCH FOR REFRIGERANT...1760
  TESTING RELAY...1761
    Troubleshooting Chart 1...1762
    Troubleshooting Chart 2...1763
  INFORMATION IN TROUBLESHOOTING TABLE...1766
    Information in Troubleshooting Table...1766
  FAILURE CODES FOR AIR CONDITIONER...1768
    879AKA - A/C Inner Sensor Open Circuit...1769
    879AKB - A/C Inner Sensor Short Circuit...1769
    879BKA - A/C Outer Sensor Open Circuit...1770
    879BKB - A/C Outer Sensor Short Circuit...1772
    879CKA - Ventilating Sensor Open Circuit...1774
    879CKB - Ventilating Sensor Short Circuit...1775
    879DKZ - Sunlight Sensor Open or Short Circuit...1776
    879EMC - Ventilation Damper Abnormality...1778
    879FMC - Air Mix Damper Abnormality...1779
    879GKX - Refrigerant Abnormality...1780
    A-1 Troubleshooting for Power Supply System (The Air Conditioner Does Not Operate)...1782
    A-2 Troubleshooting of Compressor System (Air is Not Cooled)...1784
    A-3 Troubleshooting of Blower Motor System (Air Does Not Come Out or Air Flow is Normal)...1788
    A-4 Troubleshooting for FRESH/RECIRC Air Changeover...1790
    Troubleshooting with Gauge Pressure...1792
      [Measurement Condition for Pressure]...1792
    Testing Refrigerant Pressure...1795
      Check...1796
    Precautions for Disconnecting and Connecting Refrigerant Piping...1798
      Disconnection...1798
      Connection...1798
    Tightening Torque for Joint Portion of Refrigerant Piping...1799
  HANDLING OF COMPRESSOR OIL...1800
    Oil Level Control of Compressor...1800
    Refilling of Compressor Oil...1800
    Replacement of compressor in case of compressor seizure or breakage...1801
    Other cases...1801
    Applying compressor oil to O-rings...1802
90 DIAGRAMS AND SCHEMATICS...1803
  HYDRAULIC SYSTEM...1805
    Hydraulic Circuit Diagram & Name of Valves...1806
    Hydcircuit Diagram (1/2)...1806
    Hydraulic Diagram (2/2)...1808
  ELECTRICAL SYSTEM...1809
    Electrical Circuit Symbols...1809
    Air Conditioner Electrical Circuit...1810
    Electrical Circuit Diagram (1/5)...1811
    Electrical Circuit Diagram (2/5)...1812
    Electrical Circuit Diagram (3/5)...1813
    Electrical Circuit Diagram (4/5)...1814
    Electrical Circuit Diagram (5/5)...1815

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