Complete workshop repair & service manual with electrical wiring diagrams for Komatsu Motor Grader GD500R-2, GD505R-2, GD505A-2, GD521A-1, GD522A-1, GD523A-1, GD525A-1, GD511A-1, GD513A-1, GD521R-1, GD523R-1, GD511R-1, GD513R-1, GD510R-1, GD515A-1, GD525A-1C, GD525A-1A, GD525A-1B. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Komatsu Motor Grader GD500R-2, GD505R-2, GD505A-2, GD521A-1, GD522A-1, GD523A-1, GD525A-1, GD511A-1, GD513A-1, GD521R-1, GD523R-1, GD511R-1, GD513R-1, GD510R-1, GD515A-1, GD525A-1C, GD525A-1A, GD525A-1B 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.

SEAM23AB01 - Motor Grader GD500R-2 Series Operation & Maintenance Manual.pdf
SEAM236A01 - Motor Grader GD200A-1 Series Operation & Maintenance Manual.pdf
SEAMG5110103 - Motor Grader GD511A-1, GD521A-1, GD523A-1 Series Operation & Maintenance Manual.pdf
SEAMG5110104 - Motor Grader GD511A-1, GD521A-1, GD523A-1 Series Operation & Maintenance Manual.pdf
SEBM023AB07 - Motor Grader GD500-2 (GD500R-2, GD505R-2, GD505A-2) Series Shop Manual.pdf
SEBMG5250107 - Motor Grader GD510 & GD520 Series Shop Manual.pdf

EXCERPT:
OPERATION
1. Brake applied
When the brake pedal is depressed, the air circuit is connected to chamber A of the disc brake. When the air pressure is greater than the pushing force of spring (7), piston (9) moves to the left, and pushes discs (4) and plates (5). Friction is generated between the discs (meshed with gear (2)) and the plates (meshed with cage (1 0)). This slows down the rotation of the discs and finally stops it. In other words, the brake is applied.
2. Brake released
When the brake pedal is released, the air m chamber A is released. Spring (7) moves piston (9) back to the right, so the pushing force is reduced. This removes the friction between discs (4) and plates (5), and allows them to rotate freely. In other words, the brake is released.
...

SEAM236A01 - Motor Grader GD200A-1 Series Operation & Maintenance Manual................2
  COVER................2
  FOREWORD................3
  BREAKING IN YOUR NEW MACHINE................4
  CONTENTS................5
  SAFETY HINTS................6
  GENERAL LOCATIONS................10
  OPERATOR'S COMPARTMENT................12
  INSTRUMENTS AND CONTROLS................14
  CHECK BEFORE STARTING................25
  OPERATING YOUR MACHINE................30
  WORKS TO BE CARRIED OUT BY A MOTOR GRADER................36
  OPERATING OF WORK EQUIPMENT................42
  REPLACEMENT OF CUTTING EDGE AND END BIT................47
  REPLACEMENT OF TIRES................48
  DRIVING ALONG ROAD................50
  HANDLING OF BATTERY................51
  TRANSPORTATION................54
  MAINTENANCE................56
    PERIODIC MAINTENANCE................57
      GENERAL PRECAUTIONS FOR MAINTENANCE................58
      PERIODICAL REPLACEMENT OF SAFETY PARTS................60
      MAINTENANCE TABLE................61
      EVERY 50 HOURS SERVICE................68
      EVERY 250 HOURS SERVICE................71
      EVERY 500 HOURS SERVICE................83
      EVERY 1000 HOURS SERVICE................89
      EVERY 2000 HOURS SERVICE................99
      EVERY 4000 HOURS SERVICE................100
      WHEN REQUIRED................101
    TROUBLE SHOOTING GUIDE................106
    COLD WEATHER OPERATION................110
    STORAGE................114
    SERVICE METER................116
    MACHINE AND ENGINE SERIAL NUMBERS................117
    WEAR PARTS................118
    SPECIFICATIONS................119
    FUEL AND LUBRICANTS................121
SEAM23AB01 - Motor Grader GD500R-2 Series Operation & Maintenance Manual................124
  COVER................124
  FOREWORD................125
  BREAKING IN YOUR NEW MACHINE................126
  CONTENTS................127
  SAFETY HINTS................128
  GENERAL LOCATIONS................132
  OPERATOR'S COMPARTMENT................134
  INSTRUMENTS AND CONTROLS................136
  CHECK BEFORE STARTING................147
  OPERATING YOUR MACHINE................154
  WORKS TO BE CARRIED OUT BY A MOTOR GRADER................168
  OPERATING OF WORK EQUIPMENT................172
  REPLACEMENT OF CUTTING EDGE AND END BIT................184
  CHANGING TIRES................185
  DRIVING ALONG ROAD................187
  HANDLING OF BATTERY................188
  TRANSPORTATION................191
  PERIODIC MAINTENANCE................193
    GENERAL PRECAUTIONS FOR MAINTENANCE................194
    PERIODICAL REPLACEMENT OF SAFETY PARTS................196
    MAINTENANCE TABLE................197
    EVERY 50 HOURS SERVICE................205
    EVERY 250 HOURS SERVICE................208
    EVERY 500 HOURS SERVICE................222
    EVERY 1000 HOURS SERVICE................226
    EVERY 2000 HOURS SERVICE................234
    EVERY 4000 HOURS SERVICE................239
    WHEN REQUIRED................240
  ADJUSTMENT................246
  TROUBLE SHOOTING GUIDE................250
  WEAR PARTS................253
  COLD WEATHER OPERATION................254
  STORAGE................259
  SERVICE METER................261
  MACHINE AND ENGINE SERIAL NUMBERS................262
  SPECIFICATIONS................263
  FUEL AND LUBRICANTS................265
SEAMG5110103 - Motor Grader GD511A-1, GD521A-1, GD523A-1 Series Operation & Maintenance Manual................268
  COVER................268
  FOREWORD................269
  BREAKING IN YOUR NEW MACHINE................270
  CONTENTS................271
  SAFETY HINTS................272
  GENERAL LOCATIONS AND SPECIFICATIONS................284
  INSTRUMENTS AND CONTROLS................286
  CHECK BEFORE STARTING................299
  OPERATING YOUR MACHINE................307
  OPERATING OF WORK EQUIPMENT................315
  REVERSING AND REPLACEMENT OF CUTTING EDGE AND END BIT................324
  CHANGING TIRES................325
  DRIVING ALONG ROAD................327
  TOWING................328
  TRANSPORTATION................329
  HANLING OF BATTERY................330
  COLD WEATHER OPERATION................333
  PERIODIC MAINTENANCE................338
    PRECAUTION FOR MAINTENANCE................339
    MAINTENANCE TABLE................346
    OIL FILTER AND LEVEL GAUGE POSITIONS................350
    EVERY 50 HOURS SERVICE................351
    INITIAL 250 HOURS SERVICE................352
    EVERY 250 HOURS SERVICE................352
    EVERY 500 HOURS SERVICE................366
    EVERY 1000 HOURS SERVICE................370
    EVERY 2000 HOURS SERVICE................381
    EVERY 4000 HOURS SERVICE................383
    WHEN REQUIRED................384
  ADJUSTMENT................391
  TROUBLE SHOOTING GUIDE................392
  STORAGE................395
  SERVICE METER................397
  MACHINE AND ENGINE SERIAL NUMBERS................398
  FUEL,COOLANT AND LUBRICANTS................399
SEAMG5110104 - Motor Grader GD511A-1, GD521A-1, GD523A-1 Series Operation & Maintenance Manual................403
  COVER................403
  FOREWORD................404
  BREAKING IN YOUR NEW MACHINE................405
  CONTENTS................406
  SAFETY HINTS................407
  GENERAL LOCATIONS AND SPECIFICATIONS................419
  INSTRUMENTS AND CONTROLS................421
  CHECK BEFORE STARTING................434
  OPERATING YOUR MACHINE................442
  OPERATING OF WORK EQUIPMENT................450
  REVERSING AND REPLACEMENT OF CUTTING EDGE AND END BIT................459
  CHANGING TIRES................460
  DRIVING ALONG ROAD................462
  TOWING................463
  TRANSPORTATION................464
  HANLING OF BATTERY................465
  COLD WEATHER OPERATION................468
  PERIODIC MAINTENANCE................473
    PRECAUTION FOR MAINTENANCE................474
    MAINTENANCE TABLE................481
    OIL FILTER AND LEVEL GAUGE POSITIONS................485
    EVERY 50 HOURS SERVICE................486
    EVERY 250 HOURS SERVICE................487
    EVERY 500 HOURS SERVICE................501
    EVERY 1000 HOURS SERVICE................505
    EVERY 2000 HOURS SERVICE................516
    EVERY 4000 HOURS SERVICE................518
    WHEN REQUIRED................519
  ADJUSTMENT................526
  TROUBLE SHOOTING GUIDE................527
  STORAGE................530
  SERVICE METER................532
  MACHINE AND ENGINE SERIAL NUMBERS................533
  FUEL,COOLANT AND LUBRICANTS................534
SEBM023AB07 - Motor Grader GD500-2 (GD500R-2, GD505R-2, GD505A-2) Series Shop Manual................539
  COVER................539
  CONTENTS................540
  01 GENERAL................554
    GENERAL................556
      GENERAL VIEW (GD500R-2)................557
      OPERATOR'S COMPARTMENT (GD500R-2)................558
      GENERAL VIEW (GD505R-2)................559
      OPERATOR'S COMPARTMENT (GD505R-2)................560
      GENERAL VIEW (GD505A-2)................561
      OPERATOR'S COMPARTMENT (GD505A-2)................563
      SPECIFICATIONS................566
      ENGINE SPECIFICATIONS................570
      ENGINE ASSEMBLY DRAWING................571
      ENGINE PERFORMANCE CURVE................572
      WEIGHT TABLE................573
      SERIAL NUMBER LOCATIONS................575
      OIL AND WATER CAPACITIES................581
      MOTOR GRADER DESCRIPTION................590
      GENERAL INSPECTION AND TEST................593
      GENERAL PRECAUTION FOR DISASSEMBLY................595
      GENERAL PRECAUTION FOR ASSEMBLY................597
  10 ENGINE................603
    11 STRUCTURE AND FUNCTION................603
      STRUCTURE AND FUNCTION................604
        ENGINE MOUNTING................605
        RADIATOR................606
        FUEL TANK AND PIPING................607
        ACCELERATOR CONTROL................608
    12 TESTING AND ADJUSTING................611
      TESTING AND ADJUSTING................612
        STANDARD FOR TESTING AND ADJUSTING................613
        TOOLS FOR TESTING AND ADJUSTING................615
        CRANKING METHOD ................616
        INTAKE AND EXHAUST SYSTEM................617
        ENGINE................621
        LUBRICATION SYSTEM................622
        FUEL SYSTEM................623
        COOLING SYSTEM................624
        FUEL CONTROL LEVER STROKE................625
        ACCELERATOR PEDAL STROKE................626
    13 DISASSEMBLY AND ASSEMBLY................627
      DISASSEMBLY AND ASSEMBLY................628
        STARTING MOTOR................629
          DISMOUNTING AND MOUNTING................629
        ALTERNATOR................630
          DISMOUNTING AND MOUNTING................630
        FUEL INJECTION PUMP................632
          DISMOUNTING AND MOUNTING................632
        WATER PUMP................633
          DISMOUNTING ................633
          MOUNTING................634
        OIL COOLER................637
          DISMOUNTING AND MOUNTING................637
        NOZZLE HOLDER................638
          DISMOUNTING AND MOUNTING................638
        TURBOCHARGER................639
          DISMOUNTING AND MOUNTING................639
        RADIATOR................640
          DISMOUNTING AND MOUNTING................640
        CYLINDER HEAD................641
          DISMOUNTING................641
          MOUNTING................647
        FUEL TANK................653
          DISMOUNTING................653
          MOUNTING................656
        ENGINE................661
          DISMOUNTING................661
          MOUNTING................668
        DAMPER................675
          DISMOUNTING................675
          MOUNTING................676
  20 POWER TRAIN................677
    21 STRUCTURE AND FUNCTION................677
      STRUCTURE AND FUNCTION................678
        GENERAL (GD500R-2)................679
        POWER TRAIN DIAGRAM (GD500R-2)................680
        GENERAL (GD505R-2 GD505A-2)................681
        POWER TRAIN DIAGRAM (GD505R-2 GD505A-2)................683
        MAIN CLUTCH................685
        MAIN CLUTCH BOOSTER................690
        MAIN CLUTCH CONTROL LINKAGE................693
        INERTIA BRAKE (GD500R-2)................696
        TRANSMISSION (GD500R-2)................698
        TRANSMISSION CONTROL LINKAGE (GD500R-2)................703
        DAMPER (GD505-2)................704
        HYDROSHIFT TRANSMISSION (GD505-2)................705
        HYDROSHIFT TRANSMISSION CONTROL VALVE (GD505-2)................717
        HYDROSHIFT TRANSMISSION HYDRAULIC CONTROL (GD505-2)................723
        HYDROSHIFT TRANSMISSION PIPING (GD505-2)................725
        HYDROSHIFT TRANSMISSION LUBRICATION (GD505-2)................726
        LUBRICATING RELIEF VALVE (GD505-2)................727
        HYDROSHIFT TRANSMISSION CONTROL LINKAGE (GD505-2)................728
        P.T.O (GD505-2)................731
        TRANSMISSION AND MAIN CLUTCH PUMP (GD500R-2)................732
        TRANSMISSION PUMP (GD505-2)................733
        DRIVE SHAFT................734
        FINAL DRIVE................736
        TANDEM DRIVE................740
        DIFFERENTIAL LOCK AND UNLOCK PIPING................743
    22 TESTING AND ADJUSTING................744
      TESTING AND ADJUSTING................745
        MAIN CLUTCH (GD500R-2)................746
        TRANSMISSION CONTROL LEVER STROKE AND OPERATING FORCE (GD500R-2)................750
        INCHING PEDAL STROKE AND OPERATING FORCE (GD505-2)................751
        HYDROSHIFT TRANSMISSION (GD505-2)................752
        TRANSMISSION CONTROL LEVER STROKE AND OPERATING FORCE................755
        TROUBLE SHOOTING................757
          DIAGNOSIS TOOL TABLE................758
          TROUBLE SHOOTING................759
            1. MAIN CLUTCH DOES NOT DISENGAGE CLEANLY (GEARS GRATE)................759
            2. MAIN CLUTCH SLIPS (GD500R-2)................760
            3. GEAR SLIPS OUT (GD500R-2)................760
            4. EXCESSIVE SHOCK IS FELT WHEN STARTING THE MACHINE OR SHIFTING TRANSMISSION SPEED (GD505-2)................760
            5. TIME LAG IS EXCESSIVE WHEN STARTING THE MACHINE OR SHIFTING TRANSMISSION SPEED (GD505-2)................761
            6. MACHINE FAILS TO START (GD505-2)................762
            7. MACHINE TRAVELS SLOWLY OR DOES NOT START (AT EVERY SPEED POSITION)................763
    23 DISASSEMBLY AND ASSEMBLY................764
      DISASSEMBLY AND ASSEMBLY................765
        MAIN CLUTCH ASSEMBLY................766
          DISMOUNTING................766
          MOUNTING................768
        MAIN CLUTCH CASE ASSEMBLY................770
          DISASSEMBLY................770
          ASSEMBLY................772
        MAIN CLUTCH ASSEMBLY................774
          DISASSEMBLY................774
          ASSEMBLY................777
        MAIN CLUTCH BOOSTER................780
          DISASSEMBLY AND ASSEMBLY................780
        TRANSMISSION ASSEMBLY................781
          DISMOUNTING................781
          MOUNTING................785
          DISASSEMBLY................789
          ASSEMBLY................796
        SHIFTING FORK COVER ASSEMBLY................804
          DISASSEMBLY................804
          ASSEMBLY................806
        DAMPER................808
          DISMOUNTING................808
          MOUNTING................809
          DISASSEMBLY AND ASSEMBLY................810
        P.T.O.(POWER TAKE OFF)................811
          DISASSEMBLY................811
          ASSEMBLY................813
        HYDROSHIFT TRANSMISSION................814
          DISMOUNTING................814
          MOUNTING................820
          DISASSEMBLY................827
          ASSEMBLY................843
        CAGE AND REVERSE CARRIER ASSEMBLY................865
          DISASSEMBLY................865
          ASSEMBLY................868
        1ST SPEED ROTARY CLUTCH................871
          DISASSEMBLY................871
          ASSEMBLY................874
        HIGH SPEED ROTARY CLUTCH................877
          DISASSEMBLY................877
          ASSEMBLY................881
        PLANETARY GEAR................884
          DISASSEMBLY AND ASSEMBLY................884
        HYDROSHIFT TRANSMISSION CONTROL VALVE................885
          DISMOUNTING................885
          MOUNTING................887
        TRANSMISSION CONTROL VALVE ASSEMBLY................889
          DISASSEMBLY................889
          ASSEMBLY................890
        HYDROSHIFT TRANSMISSION PUMP................895
          DISMOUNTING AND MOUNTING................895
        TANDEM AND FINAL DRIVE ASSEMBLY................896
          DISMOUNTING................896
          MOUNTING................898
        FINAL DRIVE................902
          DISASSEMBLY................902
          ASSEMBLY................908
        BEVEL PINION................930
          DISASSEMBLY................930
          ASSEMBLY................932
        BEVEL GEAR AND SHAFT ASSEMBLY................936
          DISASSEMBLY................936
          ASSEMBLY................937
        TANDEM CASE AND SPROCKET................944
          DISMOUNTING................944
          MOUNTING................948
        CHAIN................952
          DISMOUNTING................952
          MOUNTING................955
        WHEEL BRAKE AND SPROCKET................958
          DISMOUNTING................958
          MOUNTING................960
          DISASSEMBLY................966
          ASSEMBLY................969
    24 MAINTENANCE STANDARD................973
      MAINTENANCE STANDARD................975
        MAIN CLUTCH (GD500R-2)................976
        TRANSMISSION (GD500R-2)................980
        HYDROSHIFT TRANSMISSION (GD505-2)................982
        HYDROSHIFT TRANSMISSION CONTROL VALVE (GD505-2)................987
        TRANSMISSION AND MAIN CLUTCH PUMP (GD500R-2)................992
        HYDROSHIFT TRANSMISSION PUMP (GD505-2)................993
        FINAL DRIVE................994
        TANDEM DRIVE................996
  40 STEERING SYSTEM................998
    41 STRUCTURE AND FUNCTION................998
      STRUCTURE AND FUNCTION................999
        STEERING PIPING................1000
        STEERING PIPING DIAGRAM................1004
        STEERING WHEEL................1006
        STEERING VALVE................1007
        FLOW CONTROL VALVE................1014
        STEERING PUMP................1019
        STEERING CYLINDER................1020
        FRONT AXLE................1021
        WHEELS................1027
    42 TESTING AND ADJUSTING................1036
      TESTING AND ADJUSTING................1037
        CHECKING STEERING WHEEL PLAY................1038
        CHECKING STEERING WHEEL OPERATING FORCE................1038
        CHECKING TIRE PLAY................1039
        CHECKING AIR PRESSURE OF TIRE................1039
        CHECKING TOE-IN................1040
        TROUBLE SHOOTING................1041
          STEERING WHEEL DRAGS OR IS HARD TO TURN................1042
    43 DISASSEMBLY AND ASSEMBLY................1043
      DISASSEMBLY AND ASSEMBLY................1044
        FRONT AXLE................1045
          DISMOUNTING................1045
          MOUNTING................1049
        FLOW CONTROL VALVE................1053
          DISMOUNTING AND MOUNTING................1053
        STEERING CYLINDER................1055
          DISMOUNTING AND MOUNTING................1055
          DISASSEMBLY AND ASSEMBLY................1057
        STEERING PUMP................1058
          DISMOUNTING AND MOUNTING................1058
    44 MAINTENANCE STANDARD................1059
      MAINTENANCE STANDARD................1061
        STEERING PUMP................1062
        STEERING CYLINDER................1064
        FRONT AXLE................1065
  50 BRAKE SYSTEM................1067
    51 STRUCTURE AND FUNCTION................1067
      STRUCTURE AND FUNCTION................1068
        BRAKE PIPING................1069
        BRAKE PIPING DIAGRAM................1071
        HYDROMASTER................1072
        MASTER CYLINDER................1074
        WHEEL BRAKE CONTROL LINKAGE................1075
        WHEEL BRAKE................1076
        DISC BRAKE SYSTEM................1080
        BRAKE VALVE................1085
        RELAY VALVE................1089
        AIR GOVERNOR................1091
        CHECK VALVE................1093
        AIR RESERVOIR................1094
        SAFETY VALVE................1094
        PRESSURE SWITCH................1095
        AUTOMATIC DRAIN VALVE................1097
        AIR DRIER................1099
        BLADE ACCUMULATOR SYTEM................1101
        PARKING BRAKE CONTROL LINKAGE................1107
        PARKING BRAKE................1109
    52 TESTING AND ADJUSTING................1110
      TESTING AND ADJUSTING................1111
        CHECKING BRAKE PEDAL HEIGHT................1112
        CHECKING BRAKE PEDAL PLAY................1112
        CHECKING BRAKE PEDAL DEPRESSION HEIGHT................1113
        BLEEDING AIR INSIDE BRAKE PIPING................1114
        CHECKING BRAKE PEDAL OPERATING FORCE................1115
        CHECKING PARKING BRAKE LEVER STROKE................1116
        CHECKING PARKING BRAKE OPERATING FORCE................1117
        CHECKING WEAR OF BRAKE DISC................1118
    53 DISASSEMBLY AND ASSEMBLY................1119
      DISASSEMBLY AND ASSEMBLY................1120
        WHEEL AND WHEEL BRAKE ASSEMBLY................1121
          DISMOUNTING................1121
          MOUNTING................1123
        WHEEL BRAKE ASSEMBLY................1125
          DISASSEMBLY................1125
          ASSEMBLY................1128
        BRAKE MASTER CYLINDER................1132
          DISMOUNTING................1132
          MOUNTING................1134
        HYDROMASTER................1136
          DISMOUNTING AND MOUNTING................1136
          DISASSEMBLY................1137
          ASSEMBLY................1139
        PARKING BRAKE................1141
          DISMOUNTING AND ASSEMBLY................1141
    54 MAINTENANCE STANDARD................1142
      MAINTENANCE STANDARD................1144
        WHEEL BRAKE................1145
        PARKING BRAKE................1148
  60 HYDRAULIC SYSTEM................1149
    61 STRUCTURE AND FUNCTION................1149
      STRUCTURE AND FUNCTION................1150
        HYDRAULIC CONTROL PIPING................1151
        HYDRAULIC PIPING DIAGRAM................1170
        HYDRAULIC CIRCUIT DIAGRAM................1171
        HYDRAULIC CONTROL VALVE(4-SPOOL)................1180
        HYDRAULIC CONTROL VALVE(5-SPOOL)................1182
        PILOT CHECK VALVE................1192
        CIRCLE REVOLUTION HYDRAULIC CIRCUIT (GD500R,505A-2)................1199
        CIRCLE REVOLUTION HYDRAULIC CIRCUIT (GD505R-2)................1204
        HYDRAULIC PUMP................1207
        CIRCLE REVERSE MOTOR................1217
        HYDRAULIC CYLINDER................1220
        HYDRAULIC CONTROL LINKAGE................1225
    62 TESTING AND ADJUSTING................1231
      TESTING AND ADJUSTING................1232
        CHECKING HYDRAULIC OIL TEMPERATURE................1233
        CHECKING HYDRAULIC OIL PRESSURE................1234
        ADJUSTING HYDRAULIC OIL PRESSURE................1236
        MEASURING BLADE NATURAL LOWERING RATE................1237
        MEASURING BLADE SINKING AMOUNT................1237
        MEASURING SCARIFIER (O.P.) NATURAL LOWERING RATE................1237
        MEASURING SCARIFIER (O.P.) SINKING MOUNT................1237
        TROUBLE SHOOTING................1238
          DIAGNOSIS TOOL TABLE................1239
            1. HYDRAULIC DRIFT OF BLADE OR SCARIFIER CYLINDER IS LARGE ................1240
            2. BLADE OR SCARIFIER LIFTING CYLINDER LACKS FORCE ENOUGH TO RAISE THE FRONT END OF MACHINE................1241
            3. DRAWBAR-SHIFT,SCARIFIER L.H. AND R.H. BLADE LIFT CYLINDER OR ARTICULATE CYLINDERS LACKS OPERATING FORCE................1242
            4. HYDRAULIC DRIFT OF LEANING CYLINDER IS LARGE................1243
            5. CIRCLE CANNOT BE ROTATED................1244
            6. CIRCLE MOTOR SPEED IS LOW................1245
    63 DISASSEMBLY AND ASSEMBLY................1246
      DISASSEMBLY AND ASSEMBLY................1247
        HYDRAULIC PUMP................1248
          DISMOUNTING AND MOUNTING................1248
        CONTORL VALVE................1249
          DISMOUNTING................1249
          MOUNTING................1250
        4-SPOOL VALVE ASSEMBLY................1257
          DISASSEMBLY................1257
          ASSEMBLY................1258
        MAIN RELIEF VALVE ASSEMBLY................1259
          DISASSEMBLY AND ASSEMBLY................1259
        CONFLUENT VALVE (SWITCH VALVE AND QUICK DRAIN VALVE)................1260
          DISMOUNTING AND MOUNTING................1260
          DISASSEMBLY................1261
          ASSEMBLY................1262
        CHECK VALVE AND QUICK DRAIN VALVE ASSEMBLY................1263
          DISMOUNTING AND MOUNTING................1263
          DISASSEMBLY AND ASSEMBLY................1265
        BLADE LIFT CYLINDER................1266
          DISMOUNTING AND MOUNTING................1266
        BLADE SIDE SHIFT CYLINDER................1267
          DISMOUNTING................1267
          MOUNTING................1268
        DRAWBAR SHIFT CYLINDER................1271
          DISMOUNTING AND MOUNTING................1271
        LEANING CYLINDER................1272
          DISMOUNTING AND MOUNTING................1272
        ARTICULATE CYLINDER ASSEMBLY................1273
          DISMOUNTING AND MOUNTING................1273
        HYDRAULIC CYLINDER ASSEMBLY................1274
          DISASSEMBLY................1274
          ASSEMBLY................1277
    64 MAINTENANCE STANDARD................1286
      MAINTENANCE STANDARD................1288
        HYDRAULIC CONTROL VALVE................1289
        HYDRAULIC PUMP................1294
        BLADE LIFT CYLINDER................1297
        BLADE SIDE SHIFT CYLINDER................1298
        DRAWBAR SHIFT CYLINDER................1299
        LEANING CYLINDER................1300
        SCARIFIER CYLINDER (OP)................1301
        ARTICULATE CYLINDER (GD505A-2)................1302
  70 WORK EQUIPMENT................1303
    71 STRUCTURE AND FUNCTION................1303
      STRUCTURE AND FUNCTION................1304
        DRAWBAR................1305
        BLADE AND CIRCLE................1307
        LIFTER................1310
        LIFTER BRACKET CONTROL PIPING................1313
        CIRCLE REVERSE GEAR................1314
        SCARIFIER (O.P)................1316
        MAIN FRAME................1318
    72 TESTING AND ADJUSTING................1321
      TESTING AND ADJUSTING................1322
        WORK EQUIPMENT CONTROL LEVER STROKE AND OPERATING FORCE................1323
    73 DISASSEMBLY AND ASSEMBLY................1324
      DISASSEMBLY AND ASSEMBLY................1325
        BLADE................1326
          DISMOUNTING AND MOUNTING................1326
        CIRCLE REVERSE GEAR AND MOTOR................1327
          DISMOUNTING AND MOUNTING................1327
          DISASSEMBLY................1329
          ASSEMBLY................1332
    74 MAINTENANCE STANDARD................1336
      MAINTENANCE STANDARD................1338
        BLADE AND CIRCLE................1339
        BLADE LIFTER BRACKET................1342
        CIRCLE REVERSE GEAR................1344
        SCARIFIER (O.P)................1346
  90 OTHERS................1348
    91 ELECTRICAL SYSTEM................1348
      ELECTRICAL SYSTEM................1349
        BATTERY HANDLING................1350
        ELECTRIC WIRE CODE................1351
        ELECTRICAL WIRING DIAGRAM................1352
        ELECTRICAL CIRCUIT DIAGRAM................1360
        TROUBLE SHOOTING................1364
          1-1 ELECTRIC SYSTEM DOES NOT OPERATE AT ALL (EXCEPT PARKING LAMP)................1365
          1-2 CRANKING SPEED IS TOO LOW TO START THE ENGINE................1366
          1-3 PINION CLICK IS HEARD WHEN STARTING SWITCH IS TURNED TO "START",BUT STARTING MOTOR DOES NOT ROTATE................1367
          2-1 BATTERY IS FREQUENTLY NEEDS CHARGE,THUS MAKING THE ENGINE HARD TO START................1368
          3-1 PARKING LAMP DOES NOT LIGHT................1370
          3-2 ALL THE INSTRUMENT PANEL LAMPS,FRONT MARKER LAMPS,TAIL LAMPS AND HEAD LAMPS DO NOT LIGHT................1371
          3-3 FRONT MARKER LAMP AND TAIL LAMP DO NOT LIGHT................1372
          3-4 HEAD LAMP DOES NOT LIGHT................1373
          3-5 TURN SIGNAL LAMP DOES NOT LIGHT................1374
          3-6 BACKUP HORN DOES NOT SOURD OR BACK-UP LAMP DOES NOT LIGHT................1376
          3-7 TROUBLESHOOTING OTHER ACCESSORY CIRCUITS................1377
    92 INSPECTION TABLE................1378
      POWER TRAIN................1379
      STEERING SYSTEM................1381
      HYDRAULIC SYSTEM,WORK EQUIPMENT................1382
SEBMG5250107 - Motor Grader GD510 & GD520 Series Shop Manual................1388
  COVER................1388
  CONTENTS................1389
  10 ENGINE................1412
    12 TESTING AND ADJUSTING................1413
      TABLE OF JUDGEMENT STANDARD VALUE................1414
      TESTING AND ADJUSTING TOOL LIST................1418
      ADJUSTING VALVE CLEARANCE................1419
      MEASURING COMPRESSION PRESSURE................1421
      TESTING AND ADJUSTING FUEL INJECTION TIMING................1423
      BLEEDING AIR-FROM FUEL SYSTEM................1426
      ENGINE SPEED CONTROL................1427
    13 DISASSEMBLY AND ASSEMBLY................1428
      RADIATOR................1429
        REMOVAL................1429
        INSTALLATION................1429
      RADIATOR ASSEMBLY................1431
        REMOVAL................1431
        INSTALLATION................1431
      FUEL TANK(INCL.HYDRAULIC TANK)ASSEMBLY................1433
        REMOVAL................1433
        INSTALLATION................1435
  20 POWER TRAIN................1441
    21 STRUCTURE AND FUNCTION................1442
      GENERAL................1443
      POWER TRAIN................1444
      HYDROSHIFT TRANSMISSION PIPING................1446
      HYDROSHIFT TRANSMISSION CONTROL................1447
      POWER TRAIN HYDRAULIC CIRCUIT SCHEMATICS................1448
      POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM................1449
      PTO................1450
      HYDROSHIFT TRANSMISSION................1452
      TRANSFER................1457
      TRANSMISSION CONTROL VALVE................1459
        POWER TRAIN................1467
        MAIN CLUTCH................1468
        TRANSMISSION................1469
      HYDROSHIFT TRANSMISSION PUMP................1471
      FINAL DRIVE................1473
      FINAL DRIVE,DIFFERENTIAL LOCK AND UNLOCK PIPING................1481
      TANDEM DRIVE................1483
    22 TESTING ADJUSTING................1485
      TABLE OF JUDGEMENT STANDARD VALUE................1486
      TOOL LIST FOR TESTING AND ADJUSTING................1487
      INCHING PEDAL TRAVEL AND OPERATING FORCE................1488
      MAIN CLUTCH................1490
      TRANSMISSION CONTROL LEVER TRAVEL AND OPERATING FORCE................1493
      CHECKING OIL PRESSURE................1494
      MACHINE TYPE AND INCHING PRESSURE................1496
      TRANSMISSION CONTROL LEVER TRAVEL AND OPERATING FORCE................1497
      CLEARANCE DIFFERENTIAL LOCKING DEVICE OIL PRESSURE................1498
    23 DISASSEMBLY AND ASSEMBLY................1499
      ENGINE(INCL.TRANSMISSION)ASSEMBLY................1500
        REMOVAL................1500
        INSTALLATION................1504
      MAIN CLUTCH ASSEMBLY................1522
        REMOVAL................1522
        INSTALLATION................1522
      MAIN CLUTCH CASE ASSEMBLY................1524
        DISASSEMBLY................1524
        ASSEMBLY................1524
      MAIN CLUTCH ASSEMBLY................1526
        DISASSEMBLY................1526
        ASSEMBLY................1526
      MAIN CLUTCH BOOSTER ASSEMBLY................1528
        DISASSEMBLY................1528
        ASSEMBLY................1528
      TRANSMISSION ASSEMBLY................1530
        REMOVAL................1530
        INSTALLATION................1534
        DISASSEMBLY................1538
        ASSEMBLY................1544
      SHIFTING FORK COVER ASSEMBLY................1550
        DISASSEMBLY................1550
        ASSEMBLY................1550
      TRANSMISSION................1552
        DISASSEMBLY................1552
        ASSEMBLY................1565
      LOW SPEED ROTATING CLUTCH................1581
        DISASSEMBLY................1581
        ASSEMBLY................1584
      INTERMEDIATE SHAFT ROTATING CLUTCH................1587
        DISASSEMBLY................1587
        ASSEMBLY................1590
      CAGE AND CARRIER................1593
        DISASSEMBLY................1593
        ASSEMBLY................1594
      TRANSMISSION CASE................1595
        DISASSEMBLY................1595
        ASSEMBLY................1596
      PLANETARY GEAR................1597
        DISASSEMBLY................1597
        ASSEMBLY................1597
      TRANSMISSION PUMP................1598
        REMOVAL................1598
        INSTALLATION................1598
      TANDEM AND FINAL DRIVE................1602
        REMOVAL................1602
        INSTALLATION................1602
      TANDEM,FINAL DRIVE ASSEMBLY................1604
        REMOVAL................1604
        INSTALLATION................1604
      FINAL DRIVE................1608
        DISASSEMBLY................1608
        ASSEMBLY................1612
      TANDEM,FINAL DRIVE ASSEMBLY................1618
        DISASSEMBLY................1618
        ASSEMBLY................1622
      SIDE CASE ASSEMBLY................1630
        DISASSEMBLY................1630
        ASSEMBLY................1630
      BEVEL GEAR ASSEMBLY................1632
        DISASSEMBLY................1632
        ASSEMBLY................1632
      PINION ASSEMBLY................1642
        DISASSEMBLY................1642
        ASSEMBLY................1642
    24 MAINTENANCE STANDARD................1644
      PTO................1645
      MAIN CLUTCH................1649
      TRANSMISSION................1652
      HYDROSHIFT TRANSMISSION................1653
      TRANSFER................1657
      HYDROSHIFT TRANSMISSION CONTROL VALVE................1659
      TRANSMISSION PUMP................1664
      FINAL DRIVE................1666
      TANDEM DRIVE................1670
  40 STEERING SYSTEM................1671
    41 STRUCTURE AND FUNCTION................1672
      STEERING PIPING................1673
      STEERING CIRCUIT DIAGRAM................1674
      STEERING CONTROL VALVE................1675
      FRONT AXLE................1680
      STEERING CYLINDER................1685
      WHEEL................1686
    42 TESTING AND ADJUSTING................1690
      TABLE OF JUDGEMENT STANDARD................1691
      TOOL LIST FOR TESTING AND ADJUSTING................1692
      CHECKING STEERING WHEEL................1693
      CHECKING TIRE RUNOUT................1694
      CHECKING TIRE INFLATION PRESSURE................1694
      CHECKING TOE-IN................1695
    43 DISASSEMBLY AND ASSEMBLY................1696
      FRONT AXLE ASSEMBLY................1697
        REMOVAL................1697
        INSTALLATION................1697
      FRONT AXLE ASSEMBLY................1699
        DISASSEMBLY................1699
        ASSEMBLY................1705
      STEERING VALVE................1711
        DISASSEMBLY................1711
        ASSEMBLY................1715
      DOUBLE RELIEF VALVE................1719
        DISASSEMBLY................1719
        ASSEMBLY................1719
    44 MAINTENANCE STANDARD................1721
      FRONT AXLE................1722
      STEERING CYLINDER................1726
  50 BRAKE SYSTEM................1727
    51 STRUCTURE AND FUNCTION................1728
      BRAKE PIPING................1729
      BRAKE CIRCUIT DIAGRAM................1730
      BOOST MASTER................1731
      BRAKE AIR PIPING................1734
      AIR BRAKE CIRCUIT SCHEMATICS................1735
      AIR BRAKE CIRCUIT DIAGRAM................1736
      BRAKE VALVE................1737
      AIR COMPRESSOR................1741
      AIR GOVERNOR................1742
      CHECK VALVE................1743
      AIR TANK................1744
      SAFETY VALVE................1744
      AUTOMATIC DRAIN VALVE................1745
      AIR DRIER................1747
      WHEEL BRAKE................1749
      PARKING BRAKE................1752
    52 TESTING AND ADJUSTING................1754
      TABLE OF JUDGEMENT STANDARD VALUE................1755
      TOOL LIST FOR TESTING AND ADJUSTING................1755
      CHECKING BRAKE PEDAL................1756
      AIR BLEEDING FROM BRAKE CIRCUIT................1758
      CHECKING PARKING BRAKE LEVER................1759
      CHECKING WEAR OF BRAKE DISC................1760
    53 DISASSEMBLY AND ASSEMBLY................1761
      WHEEL BRAKE................1762
        REMOVAL................1762
        INSTALLATION................1762
      WHEEL BRAKE ASSEMBLY................1764
        REMOVAL................1764
        INSTALLATION................1764
        DISASSEMBLY................1768
        ASSEMBLY................1772
      BOOST MASTER................1778
        DISASSEMBLY................1778
        ASSEMBLY................1780
      PARKING BRAKE................1782
        REMOVAL AND DISASSEMBLY................1782
        INSTALLATION AND ASSEMBLY................1782
    54 MAINTENANCE STANDARD................1785
      WHEEL BRAKE................1786
      PARKING BRAKE................1788
      BOOST MASTER................1790
  60 HYDRAULIC SYSTEM................1791
    61 STRUCTURE AND FUNCTION................1792
      HYDRAULIC CONTROL PIPING................1793
      HYDRAULIC CONTROL LINKAGE................1804
      BLADE ACCUMULATOR SYSTEM ................1806
      HYDRAULIC CIRCUIT DIAGRAM................1808
      FLOW DIVIDER................1811
      HYDRAULIC PUMP................1812
      CIRCLE ROTATION MOTOR................1814
      WORK EQUIPMENT CONTROL VALVE................1820
      PILOT CHECK VALVE................1827
      HYDRAULIC CYLINDER................1831
    63 DISASSEMBLY AND ASSEMBLY................1834
      HYDRAULIC PUMP(INCL.STEERING PUMP)................1835
        REMOVAL................1835
        INSTALLATION................1835
      BLADE LIFT CYLINDER................1837
        REMOVAL................1837
        INSTALLATION................1837
      DRAWBAR SHIFT CYLINDER................1839
        REMOVAL................1839
        INSTALLATION................1839
      ARTICULATE CYLINDER................1839
        REMOVAL................1839
        INSTALLATION................1839
      BLADE SIDE SHIFT CYLINDER................1841
        REMOVAL................1841
        INSTALLATION................1841
      BLADE SIDE SHIFT CYLINDER ASSEMBLY................1843
        REMOVAL................1843
        INSTALLATION................1843
      SCARIFIER CYLINDER ASSEMBLY................1845
        REMOVAL................1845
        INSTALLATION................1845
      LEANING CYLINDER................1845
        REMOVAL................1845
        INSTALLATION................1845
      POWER TILT CYLINDER................1847
        REMOVAL................1847
        INSTALLATION................1847
      REAR MOUNT RIPPER CYLINDER ASSEMBLY................1847
        REMOVAL................1847
        INSTALLTION................1847
      HYDRAULIC CYLINDER ASSEMBLY................1849
        DISASSEMBLY................1849
        ASSEMBLY................1853
      CIRCLE ROTATION MOTOR................1861
        DISASSEMBLY................1861
        ASSEMBLY................1867
    64 MAINTENANCE STANDARD................1881
      HYDRAULIC PUMP................1882
      HYDRAULIC CONTROL VALVE................1884
      HYDRAULIC CYLINDER................1888
  70 WORK EQUIPMENT................1894
    71 STRUCTURE AND FUNCTION................1895
      DRAWBAR AND LIFTER................1896
      BLADE................1900
      CIRCLE ROTATION GEAR................1904
      SCARIFIER................1905
      REAR MOUNT RIPPER................1906
      FRAME................1907
    72 TESTING AND ADJUSTING................1909
      TABLE OF JUDGEMENT STANDARD VALUE................1910
      TOOL LIST FOR TESTING AND ADJUSTING................1914
      CHECKING CONTROL LEVER................1915
      CHECKING HYDRAULIC OIL TRMPERATURE................1916
      CHECKING HYDRAULIC OIL PRESSURE................1916
      HYDRAULIC DRIFT................1918
      CHARGING BLADE ACCUMULATOR WITH GAS................1919
      ADJUSTMENT OF CIRCLE GUIDE................1920
    73 DISASSEMBLY AND ASSEMBLY................1921
      BLADE ASSEMBLY................1922
        REMOVAL................1922
        INSTALLTION................1922
      CIRCLE ROTATION GEAR................1924
        REMOVAL................1924
        INSTALLATOIN................1924
        DISASSEMBLY................1926
        ASSEMBLY................1928
      REAR MOUNT RIPPER ASSEMBLY................1930
        REMOVAL................1930
        INSTALLATION................1930
    74 MAINTENANCE STANDARD................1932
      DRAWBAR AND LIFTER................1933
      BLADE................1937
      CIRCLE ROTATION GEAR................1938
      SCARIFIER................1939
      REAR MOUNT RIPPER................1940
  80 ELECTRIC AND ELECTRONIC SYSTEM................1941
    81 STRUCTURE AND FUNCTION................1942
      ELECTRICAL CIRCUIT DIAGRAM................1943
      CIRCUIT DIAGRAM OF CAB................1947
      ELECTRONIC VEHICLE MONITORING SYSTEM(EVMS)................1949
      ADJUSTING SPEEDOMETER MODULE OF MACHINE MONITOR................1954
    82 TESTING AND ADJUSTING................1959
      TABLE OF MONITOR REFERENCE VALUES................1960
      ELECTRICAL WIRING DIAGRAM................1963
      POSITION OF CONNECTOR................1965
      CONNECTOR TERMINAL NUMBER................1973
      PRECAUTION WHEN HANDLING CONNECTOR................1978
      METHOD OF USING YES-NO TROUBLESHOOTING FLOW CHART................1980
      TROUBLESHOOTING CHART FOR ELECTRONIC VEHICLE MONITORING SYSTEM (D TYPE) (M-1 TO M-18)................1981
        M-1 WHEN STARTING SWITCH IS TURNED ON,MONITOR PANEL DISPLAY DOES NOT APPEAR................1982
          a) NONE OF MONITOR PANEL WORKS................1982
          b) PART OF MONITOR PANEL DOES NOT WORK................1982
        M-2 WHEN STARTING SWITCH IS TURNED ON,MONITOR PANEL DISPLAY DOES NOT GO OUT................1982
          a) MONITOR MODULE DOES NOT GO OUT ................1982
          b) GAUGE MODULE DOES NOT GO OUT ................1982
          c) SPEEDOMETER MODULE DOES NOT GO OUT ................1982
        M-3 WHEN STARTING SWITCH IS TURNED ON,(DO NOT START ENGINE),CHECK BEFORE STARTING ITEMS FLASH OR PREHEATING ITEM LIGHTS UP................1983
          a) COOLANT LEVEL................1983
          b) ENGINE OIL LEVEL................1983
          c) PREHEATER................1984
        M-4 WHEN STARTING SWITCH IS TURNED ON,(ENGINE STARTED),CHECK BEFORE STARTING ITEMS FLASH................1985
          a) ALTERNATOR SYSTEM................1985
          b) ENGINE OIL PRESSURE CIRCUIT................1985
        M-5 WHEN STARTING SWITCH IS TURNED ON,(DO NOT START ENGINE),CAUTION ITEMS FLASH................1986
        M-6 WHEN STARTING SWITCH IS ON(ENGINE STARTED),CAUTION ITEMS FLASH................1987
          a) ENGINE OIL PRESSURE................1987
          b) COOLANT LEVEL................1987
          c) COOLANT TEMPERATURE................1988
          d) BATTERY CHARGE................1988
          e) FINAL OIL TEMPERATURE................1989
          f) AIR PRESSURE................1989
          g) PARKING BRAKE................1990
        M-7 FUEL TANK IS NOT FULL BUT DISPLAY SHOWS FULL TANK................1991
        M-8 NO DISPLAY IS GIVEN FOR FUEL LEVEL................1991
        M-9 ENGINE COOLANT TEMPERATURE IS HIGH,BUT LOWEST LEVEL DISPLAYED................1992
        M-10 ENGINE COOLANT TEMPERATURE GAUGE GIVES NO DISPLAY  ................1992
        M-11 TURN SIGNAL LAMPS,HIGH BEAM LIGHT UP ABNORMALLY,OR DO NOT LIGHT UP................1993
          a) PILOT DISPLAY OF TURN SIGNAL LAMP (RIGHT) LIGHT UP................1993
          b) PILOT DISPLAY OF TURN SIGNAL LAMP (LEFT) LIGHT UP................1993
          c) PILOT DISPLAY OF TURN SIGNAL LAMP (RIGHT) DOES NOT LIGHTS UP................1993
          d) PILOT DISPLAY OF TURN SIGNAL LAMP (LEFT) DOES NOT LIGHTS UP................1994
          e) HIGH BEAM PILOT LAMP DOES NOT LIGHT UP................1994
          f) HIGH BEAM PILOT LAMP DOES NOT GO OUT ................1994
        M-12 SPEEDOMETER DISPLAY DOES NOT WORK NORMALLY................1995
        M-13 WHEN ENGINE IS STARTED,SERVICE METER DOES NOT MOVE.WHEN ENGINE IS STOOPED,SERVICE METER MOVES.................1996
          a) SERVICE METER DOES NOT MOVE................1996
          b) SERVICE METER DOES NOT STOP MOVING................1996
        M-14 MONITOR PANEL LAMPS DO NOT LIGHT UP................1997
          a) NO LAMPS ON PANEL LIGHT UP................1997
          b) SOME LAMPS ON PANEL DO NOT LIGHT UP................1997
        M-15 CENTRAL WARNING LAMP DOES NOT GO OUT................1998
          a) MONITOR DISPLAYS NO ABNORMALITY,BUT CENTRAL WARNING LAMP LIGHTS UP INTERMITTENTLY................1998
          b) CENTRAL WARNING LAMP LIGHTS UP CONTINUOUSLY................1998
        M-16 CENTRAL WARNING BUZZER DOES NOT STOP................1999
          a) MONITOR DISPLAYS NO ABNORMALITY,BUT CENTRAL WARNING BUZZER SOUNDS INTERMITTENTLY................1999
          b) CENTRAL WARNING BUZZER SOUNDS CONTINUOUSLY................1999
        M-17 EMERGENCY ITEM OR NON-EMERGENCY ITEMS IS FLASHING,BUT WARNING LAMP DOES NOT FLASH................2000
        M-18 EMERGENCY ITEM IS FLASHING,BUT ALARM BUZZER DOES NOT SOUND................2001
      TROUBLESHOOTING CHART FOR ELECTRONIC VEHICLE MONITORING SYSTEM(M,N TYPE) (M-1 TO M-22)................2009
        M-1 MONITOR PANEL PILOT LAMPS DO NOT LIGHT UP FOT 3 SECONDS WHEN STARTING SWITCH IS TURNED ON.................2010
          a) NO LAMPS ON MONITOR PANEL (MONITOR MODULE) LIGHT UP.................2010
          b) NO LAMPS ON MONITOR PANEL (SPEEDOMETER MODULE) LIGHT UP.................2010
          c) SOME LAMPS ON MONITOR PANEL DO NOT LIGHT UP.................2010
        M-2 WHEN STARTING SWITCH IS TURNED ON,ALL MONITOR PANEL LAMPS LIGHT UP BUT DO NOT GO OUT.................2010
        M-3 WHEN STARTING SWITCH IS TURNED ON (WITH ENGINE STOPPED),CHECK ITEMS FLASH.................2012
          a) RADIATOR WATER LEVEL FLASHES.................2012
          b) ENGINE OIL LEVEL FLASHES.................2013
        M-4 PREHEATING IS NOT BEING CARRIED OUT,BUT PREHEATING DISPLAY FLASHES.................2014
        M-5 WHEN STARTING SWTICH IS TURNED ON AND ENGINE IS STARTED,CHECK ITEMS FLASH.................2015
          a) ALTERNATOR SYSTEM................2015
          b) ENGINE OIL PRESSURE SYSTEM................2016
        M-6 WHEN STARTING SWITCH IS TURNED ON (WITH ENGINE STOPPED),CAUTION ITEMS FLASH.................2017
        M-7 WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED,CAUTION ITEMS FLASH.................2019
          a) ENGINE OIL PRESSURE FLASHES.................2019
          b) RADIATOR WATER LEVEL FLASHES.................2020
          c) ENGINE WATER TEMPERATURE FLASHES.................2020
          d) CHARGE FLASHES.................2021
          e) FINAL DRIVE OIL TEMPERATURE FLASHES.................2022
          f) AIR PRESSURE FLASHES.................2023
          g) PARKING BRAKE FLASHES.................2024
        M-8 FOR ONE SECOND AFTER STARTING SWITCH IS TURNED ON (ENGINE STOPPED),ALARM BUZZER DOES NOT SOUND.CAUTION ITEM LAMPS ARE FLASHING BUT ALARM BUZZER DOES NOT SOUND.................2025
        M-9 THERE IS NO ABNORMALITY ON MONITOR DISPLAY,BUT ALARM BUZZER SOUNDS.................2025
        M-10 FOR TWO SECONDS AFTER STARTING SWITCH IS TURNED ON (ENGINE STOPPED),WARNING LAMP DOES NOT LIGHT UP.CAUTION ITEM LAMPS ARE FLASHING BUT WARNING LAMP DOES NOT LIGHT UP.................2026
        M-11 THERE IS NO ABNORMALITY ON MONITOR DISPLAY,BUT WARNING LAMP LIGHTS UP.................2026
        M-12 MONITOR PANEL LIGHTING DOES NOT LIGHT UP.................2028
          a) NO PANEL LIGHTIN LIGHTS UP.................2028
          b) PART OF PANEL LIGHTING DOES NOT LIGHT UP.................2028
        M-13 SERVICE METER DOES NOT MOVE WHEN ENGINE IS STARTED;OR SERVICE METER MOVES WHEN ENGINE IS STOPPED.(FOR MACHINES WITH SPEEDOMETER).................2029
          a) SERVICE METER DOES NOT MOVE WHEN ENGINE IS STARTED.................2029
          b) SERVICE METER MOVES WHEN ENGINE IS STOPPED.................2029
        M-14 ENGINE WATER TEMPERATURE GAUGE SHOWS ABNORMALLY LOW TEMPERATURE.................2031
        M-15 ENGINE WATER TEMPERATURE GAUGE SHOWS NO DISPLAY.................2031
        M-16 FUEL GAUGE ALWAYS SHOWS FULL.................2032
        M-17 NO DISPLAY IS GIVEN FOR FUEL LEVEL GAUGE.................2032
        M-18 HIGH BEAM DOES NOT LIGHT UP.................2034
        M-19 HIGH BEAM STAYS LIGHTED UP.................2034
        M-20 TURN SIGNAL INDICATOR DOES NOT LIGHT UP.................2035
        M-21 TURN SIGNAL INDICATOR STAYS LIGHTED UP.................2035
        M-22 SPEED DISPLAY STAYS AT "0" AND DOES NOT MOVE.................2037

Komatsu Motor Grader GD500, GD505, GD510, GD511, GD513, GD515, GD521, GD522, GD523, GD525 Factory Service & Shop Manual