Komatsu Wheel Loader WA50 Repair Service Manual
Complete service repair manual with Electrical Wiring Diagrams for Komatsu Wheel Loader WA50-3 avance, WA50-6, with all the technical information to maintain, diagnose, repair, rebuild like professional mechanics.
Komatsu Wheel Loader WA50-3 avance, WA50-6 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: 1,926 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
SEBM017803 - Wheel Loader WA50-3 avance Shop Manual.pdf
SEN04670-04 - Wheel Loader WA50-6 Shop Manual.pdf
TEN00316-04 - Wheel Loader WA50-6 Operation & Maintenance Manual.pdf
TEN00513-00 - Wheel Loader WA50-6 Operation & Maintenance Manual.pdf
TEN00533-01 - Wheel Loader WA50-6 Operation & Maintenance Manual.pdf
SEAM059800T - Wheel Loader WA30-5, WA50-3 Operation & Maintenance Manual.pdf
MAIN SECTIONS
SEAM059800T - Wheel Loader WA30-5, WA50-3 Operation & Maintenance Manual...2
COVER...2
FOREWORD...3
FOREWORD...4
SAFETY INFORMATION...7
INTRODUCTION...9
FRONT/REAR,LEFT/RIGHT DIRECTIONS OF MACHINE...9
NECESSARY INFORMATION...10
PRODUCT IDENTIFICATION NUMBER(PIN)/MACHINE SERIAL NO.PLATE...10
ENGINE SERIAL NO.PLATE AND POSITON...10
POSITION OF SERVICE METER...10
TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR...11
CONTENTS...12
SAFETY...15
SAFETY...16
SAFETY LABELS...18
LOCATION OF SAFETY LABELS...19
SAFETY LABELS...20
GENERAL PRECAUTIONS...24
SAFETY RULES...24
IF ABNORMALITIES ARE FOUND...24
CLOTHING AND PERSONAL PROTECTIVE ITEMS...24
FIRE EXTINGUISHER AND FIRST AID KIT...24
SAFETY FEATURES...24
KEEP MACHINE CLEAN...25
INSIDE OPERATOR'S COMPARTMENT...25
ALWAYS APPLY LOCK WHEN LEAVING OPERATOR'S SEAT...25
HANDRAILS AND STEPS...26
MOUNTING AND DISMOUNTING...26
NO PEOPLE ON ATTACHMENTS...26
DO NOT GET CAUGHT IN ARTICULATED PORTION...27
PREVENTION OF BURNS...27
FIRE PREVENTION...28
ACTION IF FIRE OCCURS...29
WINDOW WASHER LIQUID...29
PRECAUTIONS WHEN USING ROPS (ROLL OVER PROTECTIVE STRUCTURE)...29
PRECAUTIONS FOR ATTACHMENTS...29
UNAUTHORIZED MODIFICATION...29
SAFETY AT WORKSITE...30
WORKING ON LOOSE GROUND...30
DO NOT GO CLOSE TO HIGH-VOLTAGE CABLES...30
ENSURE GOOD VISIBILITY...31
BE CAREFUL ABOUT ASBESTOS DUST...31
CHECKING SIGNALMAN'S SIGNALS AND SIGNS...31
EMERGENCY EXIT FROM OPERATOR'S CAB...31
VENTILATION FOR ENCLOSED AREAS...32
PRECAUTIONS FOR OPERATION...33
STARTING ENGINE...33
CHECKS BEFORE STARTING ENGINE...33
PRECAUTIONS WHEN STARTING...33
PRECAUTIONS IN COLD AREAS...34
OPERATION...35
CHECKS BEFORE OPERATION...35
PRECAUTIONS WHEN TRAVELING IN FORWARD OR REVERSE...35
PRECAUTIONS WHEN TRAVELING...36
PRECAUTIONS WHEN USING A SMOKE POT...36
TRAVELING ON SLOPES...37
PROHIBITED OPERATIONS...38
PRECAUTIONS WHEN OPERATING...38
METHODS OF USING BRAKE...39
OPERATE CAREFULLY ON SNOW...39
PARKING MACHINE...40
TRANSPORTATION...41
LOADING AND UNLOADING...41
SHIPPING...41
BATTERY...42
BATTERY HAZARD PREVENTION...42
STARTING WITH BOOSTER CABLES...43
TOWING...44
WHEN TOWING...44
PRECAUTIONS FOR MAINTENANCE...45
WARNING TAG...45
KEEP WORK PLACE CLEAN AND TIDY...45
APPOINT LEADER WHEN WORKING WITH OTHERS...45
MAINTENANCE WITH ENGINE RUNNING...46
TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING...47
PROPER TOOLS...47
PERSONNEL...48
ATTACHMENTS...48
WORK UNDER THE MACHINE...48
NOISE...48
PRECAUTIONS WHEN USING HAMMER...49
REPAIR WELDING...49
REMOVING BATTERY TERMINAL...49
PRECAUTIONS WITH HIGH-PRESSURE OIL...49
HANDLING HIGH-PRESSURE HOSES...50
WASTE MATERIALS...50
COMPRESSED AIR...50
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS...50
PRECAUTIONS WITH TIRES...51
HANDLING TIRES...51
PRECAUTIONS WHEN STORING TIRES...51
OPERATION...52
GENERAL VIEW...53
GENERAL VIEW OF MACHINE...53
GENERAL VIEW OF CONTROLS AND GAUGES...54
EXPLANATION OF COMPONENTS...56
MACHINE MONITOR...56
SWITCHES...65
CONTROL LEVERS, PEDALS...67
CAP WITH LOCK...72
SAFETY BAR...73
TILT HOOD...73
TOWING PIN...73
FUSE...74
FUSIBLE LINK...75
MANUAL POCKET...75
POWER OUTLET...75
OPERATION...76
CHECK BEFORE STARTING ENGINE, ADJUST...76
STARTING ENGINE...87
OPERATIONS AND CHECKS AFTER STARTING ENGINE...90
STOPPING ENGINE...91
MOVING THE MACHINE(DIRECTIONAL, SPEED), STOPPING THE MACHINE...92
TURNING...96
OPERATION OF WORK EQUIPMENT...97
HANDLING FRONT ATTACHMENT SERVICE HYDRAULIC CIRCUIT...98
WORK POSSIBLE USING WHEEL LOADER...99
PRECAUTIONS FOR OPERATION...103
ADJUSTING WORK EQUIPMENT POSTURE...105
PARKING MACHINE...107
CHECKS AFTER COMPLETION OF OPERATION...109
LOCKING...109
HANDLING THE TIRES...110
TRANSPORTATION...113
TRANSPORTATION PROCEDURE...113
LOADING, UNLOADING WORK WITH TRAILERS...113
LIFTING MACHINE...116
REMOVAL,INSTALLATION OF CANOPY...120
COLD WEATHER OPERATION...122
PRECAUTIONS FOR LOW TEMPERATURE...122
PRECAUTIONS AFTER COMPLETION OF WORK...123
AFTER COLD WEATHER...124
LONG-TERM STORAGE...125
BEFORE STORAGE...125
DURING STORAGE...125
AFTER STORAGE...125
TROUBLESHOOTING...126
WHEN MACHINE RUNS OUT OF FUEL...126
TOWING THE MACHINE...126
IF BATTERY IS DISCHARGED...128
OTHER TROUBLE...131
MAINTENANCE...136
GUIDES TO MAINTENANCE...137
OUTLINES OF SERVICE...139
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC...139
OUTLINE OF ELECTRIC SYSTEM...141
WEAR PARTS...142
WEAR PARTS LIST...142
USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE...143
PROPER SELECTION OF FUEL, COOLANT AND LUBRICANTS...143
STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS...147
TORQUE LIST...147
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS...148
MAINTENANCE SCHEDULE CHART...149
MAINTENANCE SCHEDULE CHART...149
SERVICE PROCEDURE...151
INITIAL 250 HOURS SERVICE OR INITIAL 3 MONTHS(ONLY AFTER THE FIRST 250 HOURS)...151
WHEN REQUIRED...152
REPLACE AIR CLEANER ELEMENT...152
CLEAN INSIDE OF COOLING SYSTEM...153
DRAIN WATER AND SEDIMENT FROM FUEL TANK...155
CHECK WATER SEPARATOR ELEMENT...156
CHECK OIL LEVEL IN TRANSFER CASE,ADD OIL...157
CHECK AXLE OIL LEVEL, ADD OIL...158
CLEAN TRANSFER CASE BREATHER...159
CLEAN AXLE CASE BREATHER...159
CLEAN AND CHECK RADIATOR FINS...160
TURN,REPLACE BOLT-ON CUTTING EDGE...160
CHECK PARKING BRAKE...161
ADJUST PARKING BRAKE RELEASE LEVER...161
CHECK BRAKE PEDAL...161
SELECTION AND INSPECTION OF TIRES...162
CHECK BEFORE STARTING...164
EVERY 50 HOURS SERVICE OR EVERY 1 MONTH...165
CLEAN AIR CLEANER DUST CUP...165
EVERY 250 HOURS SERVICE OR EVERY 3 MONTHS...166
LUBRICATING...166
CHECK OIL LEVEL IN HYDRAULIC TANK,ADD OIL...167
CLEAN AIR CLEANER ELEMENT...168
CHECK FAN BELT TENSION,ADJUST...169
CHECK BATTERY ELECTROLYTE LEVEL...170
CHECK FOR LOOSE WHEEL HUB BOLTS,TIGHTEN...172
EVERY 500 HOURS SERVICE OR EVERY 6 MONTHS...173
LUBRICATE REAR AXLE PIVOT PIN(2 PLACES)...173
REPLACE FUEL FILTER CARTRIDGE...173
CHANGE OIL IN ENGINE OIL PAN,REPLACE ENGINE OIL FILTER CARTRIDGE...175
EVERY 1000 HOURS SERVICE OR EVERY 1 YEAR...176
CHANGE OIL IN HYDRAULIC TANK,REPLACE HYDRAULIC OIL FILTER CARTRIDGE AND HST FILTER ELEMENT...176
LUBRICATING...177
EVERY 2000 HOURS SERVICE OR EVERY 2 YEARS...178
CHANGE OIL IN TRANSFER CASE...178
CHANGE AXLE OIL...179
CHECK ALTERNATOR,STARTING MOTOR...179
CHECK ENGINE VALVE CLEARANCE,ADJUST...179
SPECIFICATIONS...180
SPECIFICATIONS...181
ATTACHMENTS, OPTIONS...182
HANDLING SEAT BELT...183
FASTENING AND REMOVING BELT...183
ADJUST BELT LENGTH...183
CHECK SEAT BELT AND MOUNTS...184
HANDLING SERVICE HYDRAULIC CIRCUIT...185
CONNECTING HYDRAULIC CIRCUIT...185
ROUTE OF HYDRAULIC CIRCUIT...186
INDEX...187
SEBM017803 - Wheel Loader WA50-3 avance Shop Manual...190
COVER...190
CONTENTS...191
01 GENERAL...214
GENERAL ASSEMBLY DRAWING...215
SPECIFICATIONS...217
WEIGHT TABLE...220
LIST OF LUBRICANT AND WATER...221
10 STRUCTURE AND FUNCTION...223
POWER TRAIN...224
POWER TRAIN SYSTEM...225
RADIATOROIL COOLER...227
HST PIPING...229
HST HYDRAULIC CIRCUIT DIAGRAM...230
MAIN PISTON PUMP...232
HIGH-PRESSURE RELIEF VALVE...234
LOW-PRESSURE RELIEF VALVE...236
WORK EQUIPMENTSTEERING PUMP, HST CHARGE PUMP...237
CHARGE PUMP OIL FILTER...238
SPEED RELATED VALVE (DA VALVE)...239
PISTON MOTOR...240
DIRECTIONAL SHUTTLE VALVE...242
SERVO VALVE...243
INCHING VALVE...244
TRANSFER...245
HST CONTROL...246
AXLE...248
DIFFERENTIAL...250
FINAL DRIVE...253
AXLE MOUNT...255
CENTER HINGE PIN...256
TIREWHEEL...257
STEERING PIPING...258
STEERING COLUMN...259
PRIORITY VALVE...260
STEERING VALVE (ORBIT-ROLL)...264
BRAKE, PARKING BRAKE CONTROL...272
BRAKE (ALSO USED AS PARKING BRAKE)...273
WORK EQUIPMENT PIPING...274
WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM...275
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM...276
WORK EQUIPMENT LEVER LINKAGE...277
HYDRAULIC TANK...278
HYDRAULIC FILTER...279
MAIN CONTROL VALVE...280
WORK EQUIPMENT LINKAGE...287
BUCKET...289
BUCKET POSITIONER...290
PROXIMITY SWITCH...291
ROPS CANOPY...292
CENTRAL PANEL (CLUSTER GAUGE)...293
ENGINE START CIRCUIT...294
ENGINE STOP CIRCUIT...294
PREHEATING CIRCUIT...295
PARKING BRAKE CIRCUIT...296
20 TESTING AND ADJUSTING...297
STANDARD VALUE TABLE FOR ENGINE...298
STANDARD VALUE TABLE FOR CHASSIS...300
TABLE OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING...305
ADJUSTING VALVE CLEARANCE...306
MEASURING COMPRESSION PRESSURE...309
TESTING AND ADJUSTING FUEL INJECTION TIMING...310
BLEEDING AIR FROM FUEL CIRCUIT...316
TESTING AND ADJUSTING FAN BELT TENSION...317
TESTING FOR ABNORMALITY IN FUEL LEVEL SENSOR...319
MEASURING ACCELERATOR PEDAL...320
MEASURING OPERATING EFFORT, TRAVEL OF DIRECTIONAL LEVER...322
MEASURING STALL SPEED...323
MEASURING HST OIL PRESSURE...324
TESTING AND ADJUSTING STEERING WHEEL...325
MEASURING OPERATING TIME FOR STEERING WHEEL...326
MEASURING STEERING PRESSURE...327
TESTING AND ADJUSTING BRAKE PEDAL...328
MEASURING OPERATION EFFORT, TRAVEL OF BRAKE PEDAL...330
MEASURING BRAKE PERFORMANCE...331
MEASURING PARKING BRAKE PERFORMANCE...332
MEASURING BRAKE DISC WEAR...333
TESTING AND ADJUSTING INCHING VALVE LINKAGE...334
MEASURING AND ADJUSTING WORK EQUIPMENT CONTROL LEVER...335
MEASURING TRAVEL OF MAIN CONTROL VALVE SPOOL...337
MEASURING WORK EQUIPMENT PRESSURE...338
TESTING AND ADJUSTING BUCKET POSITIONER...340
TROUBLESHOOTING...342
POINTS TO REMEMBER WHEN TROUBLESHOOTING...343
SEQUENCE OF EVENTS IN TROUBLESHOOTING...344
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE...345
CHECKS BEFORE TROUBLESHOOTING...353
TROUBLESHOOTING OF ELECTRICAL SYSTEM...354
E-1 ENGINE DOES NOT START...355
TROUBLESHOOTING HYDRAULIC SYSTEM (H MODE)...363
TROUBLESHOOTING...364
CHECKING MACHINE BEFORE TROUBLESHOOTING...364
CHECKING HST BEFORE TROUBLESHOOTING...365
H-1 IMPOSSIBLE TO TRAVEL IN EITHER DIRECTION (FORWARD OR REVERSE)...367
H-2 IMPOSSIBLE TO TRAVEL IN ONE DIRECTION ONLY (EITHER FORWARD OR REVERSE)...368
H-3 LACKS SPEED IN BOTH DIRECTIONS (FORWARD AND REVERSE)...369
H-4 LACKS SPEED IN ONE DIRECTION ONLY (FORWARD OR REVERSE)...370
H-5 LACKS DRAWBAR PULL IN BOTH DIRECTIONS (FORWARD AND REVERSE)...370
H-6 LACKS DRAWBAR PULL IN ONE DIRECTION ONLY (FORWARD OR REVERSE)...371
H-7 ENGINE SPEED IS HIGH WHEN STARTING IN BOTH DIRECTIONS (FORWARD AND REVERSE)...371
H-8 ENGINE SPEED IS HIGH WHEN STARTING IN ONE DIRECTION ONLY (FORWARD OR REVERSE)...371
30 DISASSEMBLY AND ASSEMBLY...372
HOW TO READ THIS MANUAL...373
PRECAUTIONS WHEN CARRYING OUT OPERATION...375
SPECIAL TOOLS LIST...377
REMOVAL OF FUEL INJECTION PUMP ASSEMBLY...378
INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY...379
REMOVAL OF ENGINE ASSEMBLY...380
INSTALLATION OF ENGINE ASSEMBLY...386
REMOVAL OF ENGINE ASSEMBLY...394
INSTALLATION OF ENGINE ASSEMBLY...401
REMOVAL OF RADIATOR...410
INSTALLATION OF RADIATOR...412
REMOVAL OF RADIATOR...414
INSTALLATION OF RADIATOR...417
REMOVAL OF FUEL TANK...419
INSTALLATION OF FUEL TANK...419
REMOVAL OF MAIN PISTON PUMP ASSEMBLY...420
INSTALLATION OF MAIN PISTON PUMP ASSEMBLY...425
DISASSEMBLY OF MAIN PISTON PUMP ASSEMBLY...429
ASSEMBLY OF MAIN PISTON PUMP ASSEMBLY...431
REMOVAL OF PISTON MOTOR ASSEMBLY...433
INSTALLATION OF PISTON MOTOR ASSEMBLY...435
DISASSEMBLY OF PISTON MOTOR ASSEMBLY...437
ASSEMBLY OF PISTON MOTOR ASSEMBLY...438
REMOVAL OF ENGINE AND TRANSFER ASSEMBLIES...439
INSTALLATION OF ENGINE AND TRANSFER ASSEMBLY...445
REMOVAL OF ENGINE AND TRANSFER ASSEMBLIES...452
INSTALLATION OF ENGINE AND TRANSFER ASSEMBLIES...459
DISASSEMBLY OF TRANSFER...467
ASSEMBLY OF TRANSFER ASSEMBLY...470
DISASSEMBLY OF DRIVE SHAFT...474
ASSEMBLY OF DRIVE SHAFT...475
REMOVAL OF FRONT AXLE...476
INSTALLATION OF FRONT AXLE...477
REMOVAL OF REAR AXLE...478
INSTALLATION OF REAR AXLE...481
DISASSEMBLY OF DIFFERENTIALS...484
ASSEMBLY OF DIFFERENTIAL...487
DISASSEMBLY OF AXLE HOUSINGS...498
ASSEMBLY OF AXLE HOUSING...503
REMOVAL OF CENTER HINGE PIN...509
INSTALLATION OF CENTER HINGE PIN...516
REMOVAL OF STEERING VALVE...526
INSTALLATION OF STEERING VALVE...526
DISASSEMBLY OF STEERING VALVE...527
DISASSEMBLY OF RELIEF VALVE HOUSING SIDE OF STEERING VALVE...535
ASSEMBLY OF RELIEF VALVE HOUSING SIDE OF STEERING VALVE...536
REMOVAL OF STEERING CYLINDER...537
INSTALLATION OF STEERING CYLINDER...537
REMOVAL OF PARKING BRAKE...538
INSTALLATION OF PARKING BRAKE...540
REMOVAL OF HYDRAULIC TANK...543
INSTALLATION OF HYDRAULIC TANK...543
REMOVAL OF WORK EQUIPMENT VALVE...544
INSTALLATION OF WORK EQUIPMENT VALVE...544
REMOVAL OF BUCKET CYLINDER...545
INSTALLATION OF BUCKET CYLINDER...545
REMOVAL OF BOOM CYLINDER...546
INSTALLATION OF BOOM CYLINDER...546
DISASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES...547
ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES...549
REMOVAL OF WORK EQUIPMENT...551
INSTALLATION OF WORK EQUIPMENT...554
REMOVAL OF COUNTERWEIGHT...557
INSTALLATION OF COUNTERWEIGHT...557
REMOVAL OF INSTRUMENTS PANEL...558
INSTALLATION OF INSTRUMENTS PANEL...558
40 MAINTENANCE STANDARD...559
TRANSMISSIONENGINE MOUNT...560
WORK EQUIPMENTSTEERING PUMP, HST CHARGE PUMP...561
TRANSFER...562
HST INCHING VALVE...564
DRIVE SHAFT...565
DIFFERENTIAL (1/2) ...566
DIFFERENTIAL (2/2)...567
FINAL DRIVE...569
AXLE MOUNT...570
CENTER HINGE PIN...571
STEERING COLUMN...572
PRIORITY VALVE...573
STEERING CYLINDER MOUNT...574
BRAKE...575
HYDRAULIC CYLINDER...576
WORK EQUIPMENT LINKAGE...578
BUCKET...580
BUCKET POSITIONER...581
90 OTHERS...582
ELECTRIC CIRCUIT DIAGRAM...583
SEN04670-04 - Wheel Loader WA50-6 Shop Manual...586
COVER...586
00 Index and foreword...0
100 Index...588
Composition of shop manual...589
Table of contents...591
200 Foreword and general information...598
Safety notice...599
How to read the shop manual...604
Explanation of terms for maintenance standard...606
Handling of electric equipment and hydraulic component...608
Handling of connectors newly used for engines...617
How to read electric wire code...620
Precautions when carrying out operation...623
Method of disassembling and connecting push-pull type coupler...626
Standard tightening torque table...629
Conversion table...633
01 Specification...0
100 Specification and technical data...640
Specification dimension drawing...641
Specifications...642
Weight table...646
Table of fuel, coolant and lubricants...647
10 Structure, function and maintenance standard...0
100 Engine and cooling system...650
Engine mount and transfer mount...651
Coupling...653
Cooling system...654
Cooling system hydraulic piping diagram...655
200 Power train...658
Power train...660
Power train system diagram...661
Drive shafts...663
HST hydraulic piping diagram...664
HST pump...665
HST motor...675
Transfer...685
Axle...691
Differential...693
Final drive...698
300 Steering system...704
Steering piping diagram...705
Steering column...706
Priority valve...707
Orbit-roll valve...708
Steering cylinder...713
400 Brake system...716
Brake control...717
Brake (also used as parking brake)...719
500 Undercarriage and frame...722
Axle mount and center hinge pin...723
600 Hydraulic system...730
Work equipment hydraulic piping diagram...731
Work equipment control lever linkage...733
Hydraulic tank...734
2-unit gear pump...736
Work equipment control valve...737
700 Work equipment...748
Work equipment linkage...749
Bucket...752
Bucket positioner...753
Work equipment cylinder...757
800 Cab and its attachments...760
Cab...761
Air conditioner...763
Heater...770
Canopy...772
910 Electrical system, Part 1...774
Machine monitor system...775
Machine monitor...780
HST electronic control system...784
Electrical system (HST controller system)...785
HST controller...795
920 Electrical system, Part 2...798
KOMTRAX system...799
Engine start circuit...802
Engine stop circuit...803
Preheating circuit...804
Travel mode selector switch...805
Travel speed control dial...806
Sensors...807
20 Standard value table...0
100 Standard service value table...816
Standard service value table for engine...817
Standard service value table for chassis...818
30 Testing and adjusting...0
110 Testing and adjusting, Part 1...824
Tools for testing, adjusting, and troubleshooting...825
Testing and adjusting engine speed...827
Testing exhaust gas color...830
Testing and adjusting valve clearance...831
Testing compression pressure...833
Testing engine oil pressure...834
Testing and adjusting fuel injection timing...835
Bleeding air from fuel circuit...839
Check of installed condition of cylinder head and manifolds...840
Check of engine piping for damage and looseness...840
Check of muffler and muffler stack for looseness and damage...841
Check of muffler function...841
Testing, adjusting and replacing alternator belt...842
Testing, adjusting and replacing air conditioner compressor belt...843
120 Testing and adjusting, Part 2...846
Testing operating force of accelerator pedal...848
Testing fuel level sensor...850
Testing directional lever...851
Testing and adjusting HST oil pressure...852
Adjusting travel speed sensor...856
Testing and adjusting steering wheel...857
Testing and adjusting steering oil pressure...859
Bleeding air from steering circuit...861
Testing brake pedal...862
Testing and adjusting brake pedal and linkage...863
Testing and adjusting brake switch...864
Testing brake performance...865
Testing brake disc wear...866
Testing and adjusting inching potentiometer linkage...867
Testing and adjusting parking brake control linkage...868
Measuring parking brake performance...870
Testing and adjusting work equipment control lever...871
Testing and adjusting work equipment hydraulic pressure...873
Testing travel of main control valve spool...874
Bleeding air from hydraulic circuit...875
Releasing remaining pressure in hydraulic circuit...876
Testing and adjusting bucket positioner...877
Checking proximity switch operation pilot lamp...878
Procedure for testing diodes...879
Preparation work for troubleshooting for electrical system...881
How to start operation of KOMTRAX terminal...883
Lamp display of KOMTRAX terminal...887
Removal and installation of KOMTRAX terminal...890
Pm clinic inspection chart...891
40 Troubleshooting...0
100 Failure code table and fuse locations...894
Failure codes table...895
How to select failure code display and how to read failure code...896
Fuse locations...899
200 General information on troubleshooting...904
Points to remember when troubleshooting...905
Sequence of events in troubleshooting...906
Testing before troubleshooting...907
Classification and procedures of troubleshooting...908
Information contained in troubleshooting table...911
Connection table for connector pin numbers...913
T- branch box and T- branch adapter table...949
300 Troubleshooting by failure code (Display of code)...954
Failure code [12] Directional (FNR) lever: Disconnection, ground fault, hot short...955
Failure code [13] Engine speed sensor: Disconnection, hot short...959
Failure code [14] Travel speed sensor: Disconnection, ground fault, hot short, defective installation...961
Failure code [22] MB (forward) pressure sensor: Disconnection, ground fault, hot short...963
Failure code [23] MA (reverse) pressure sensor: Disconnection, ground fault, hot short...965
Failure code [24] Travel speed variable potentiometer: Disconnection, ground fault, hot short...967
Failure code [25] Inching pedal potentiometer: Disconnection, ground fault, hot short...969
Failure code [26] HST oil temperature sensor: Ground fault...971
Failure code [32] HST pump forward EPC: Disconnection, short circuit, ground fault, hot short...973
Failure code [33] HST pump reverse EPC: Disconnection, short circuit, ground fault, hot short...975
Failure code [34] HST motor EPC: Disconnection, short circuit, ground fault, hot short...977
Failure code [36] HST pump forward EPC/reverse EPC: Sticking (foreign matter in system etc.)...979
Failure code [42] HST oil temperature: Overheat...980
Failure code [52] Source voltage: Voltage drop, disconnection...981
Failure code [53] Solenoid power supply: Voltage drop, disconnection...983
Failure code [54] ACC signal: Disconnection, ground fault...985
Failure code [55] Potentiometer power supply: Ground fault, hot short...987
400 Troubleshooting of electrical system (E-mode)...990
E-1 Engine does not start...991
E-2 Engine does not stop...999
E-3 Preheater does not operate normally...1001
E-4 Travel speed is low or high...1003
E-5 Parking brake omission alarm malfunctions...1005
E-6 Bucket positioner does not function or cannot be reset...1007
E-7 Travel direction cannot be changed normally...1009
E-8 Windshield wiper does not operate...1011
E-9 Window washer does not operate...1015
E-10 Headlamp, clearance lamp, tail lamp and license lamp do not light or go off...1019
E-11 Working lamp and rotary lamp do not light or go off...1025
E-12 Turn signal lamp does not light or go off...1031
E-13 Stop lamp does not light or go off...1035
E-14 Backup lamp does not light or go off...1037
E-15 Backup buzzer does not sound or stop sounding...1039
E-16 Horn does not sound or stop sounding...1043
E-17 Alarm buzzer does not sound or stop sounding...1045
E-18 Fuel level is not displayed normally...1047
E-19 Air conditioner does not work...1049
E-20 KOMTRAX system does not operate normally...1059
500 Troubleshooting of hydraulic and mechanical system (H-mode)...1064
Method of using troubleshooting chart...1066
Failure phenomenon and cause table...1069
H-1 The machine does not start...1071
H-2 The travel speed is slow...1072
H-3 The traction force is weak...1073
H-4 Engine stalls when traveling or engine speed drops excessively...1074
H-5 Travel speed variable dial does not function...1075
H-6 The steering wheel does not turn...1076
H-7 The steering wheel is heavy...1077
H-8 Steering wheel shakes or jerks...1078
H-9 Machine deviates naturally to one side when traveling...1078
H-10 The brake does not work or does not work well...1079
H-11 The brake is not released or is dragged...1080
H-12 Parking brake does not work at all or sufficiently...1081
H-13 Parking brake is not reset or it drags...1082
H-14 The lift arm does not rise or lower...1083
H-15 The lift arm moves slowly or the lift arm rising force is insufficient...1084
H-16 When rising, the lift arm comes to move slowly at specific height...1085
H-17 The lift arm cylinder cannot hold down the bucket (The bucket rises in the air)...1085
H-18 Hydraulic drifts of the lift arm occur often...1085
H-19 The lift arm wobbles during operation...1085
H-20 When the control lever is switched from HOLD to RAISE, the lift arm falls temporarily...1086
H-21 The bucket does not tilt back...1087
H-22 The bucket moves slowly or the tilting-back force is insufficient...1088
H-23 The bucket comes to operate slowly in the midst of tilting-back...1089
H-24 The bucket cylinder cannot hold down the bucket...1089
H-25 Hydraulic drifts of the bucket occur often...1089
H-26 The bucket wobbles during travel with load (The work equipment valve is set to HOLD)...1089
H-27 When the control lever is switched from HOLD to TILT, the bucket falls temporarily...1090
H-28 The control levers of the lift arm and bucket do not move smoothly and heavy...1090
600 Troubleshooting of engine (S-mode)...1092
Method of using troubleshooting charts...1094
S-1 Starting performance is poor...1097
S-2 Engine does not start...1098
S-3 Engine does not pick up smoothly...1101
S-4 Engine stops during operations...1102
S-5 Engine does not rotate smoothly...1103
S-6 Engine lacks output (or lacks power)...1104
S-7 Exhaust smoke is black (incomplete combustion)...1105
S-8 Oil consumption is excessive (or exhaust smoke is blue)...1106
S-9 Oil becomes contaminated quickly...1107
S-10 Fuel consumption is excessive...1108
S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)...1109
S-12 Oil pressure drops...1110
S-13 Oil level rises (Entry of coolant/fuel)...1111
S-14 Coolant temperature becomes too high (overheating)...1112
S-15 Abnormal noise is made...1113
S-16 Vibration is excessive...1114
50 Disassembly and assembly...0
100 General information on disassembly and assembly...1116
How to read this manual...1117
Coating materials list...1119
Special tools list...1122
200 Engine and cooling system...1126
Removal and installation of fuel injection pump assembly...1127
Removal and installation of nozzle holder assembly...1132
Removal and installation of cylinder head assembly...1134
Removal and installation of radiator assembly...1138
Removal and installation of engine hood assembly...1139
Removal and installation of hydraulic oil cooler assembly...1140
Removal and installation of radiator and hydraulic oil cooler assembly...1142
Removal and installation of engine and HST pump assembly...1145
Removal and installation of engine front oil seal assembly...1149
Removal and installation of engine rear oil seal assembly...1151
Removal and installation of fuel tank assembly...1152
300 Power train...1156
Removal and installation of transfer assembly...1157
Disassembly and assembly of transfer assembly...1159
Removal and installation of parking brake assembly...1165
Disassembly and assembly of parking brake assembly...1167
Removal and installation of front axle assembly...1170
Removal and installation of rear axle assembly...1171
Disassembly and assembly of axle housing assembly...1173
Disassembly and assembly of differential assembly...1182
400 Undercarriage and frame...1194
Removal and installation of center hinge pin...1195
Removal and installation of counterweight assembly...1202
500 Hydraulic system...1206
Removal and installation of HST pump assembly...1207
Removal and installation of HST motor assembly...1209
Removal and installation of work equipment control valve assembly...1211
Removal and installation of hydraulic tank assembly...1212
Disassembly and assembly of hydraulic cylinder assembly...1215
600 Work equipment...1220
Removal and installation of work equipment assembly...1221
700 Cab and its attachments...1226
Removal and installation of canopy assembly...1227
Removal and installation of operators cab assembly...1228
Removal and installation of operator's cab glass (Stuck glass)...1233
Removal and installation of floor frame assembly...1241
Removal and installation of heater unit assembly...1246
Removal and installation of air conditioner unit assembly...1248
Removal and installation of air conditioner condenser assembly...1250
Removal and installation of air conditioner compressor assembly...1252
800 Electrical system...1256
Removal and installation of font monitor panel assembly...1257
Removal and installation of right side monitor panel assembly...1259
Removal and installation of HST controller assembly...1260
Removal and installation of KOMTRAX terminal assembly...1262
90 Diagrams and drawings...0
100 Hydraulic diagrams and drawings...1264
Hydraulic circuit diagram...1266
200 Electrical diagrams and drawings...1269
Electrical circuit diagram (1/2)...1271
Electrical circuit diagram (2/2)...1272
Connector list and stereogram...1273
TEN00316-04 - Wheel Loader WA50-6 Operation & Maintenance Manual...1276
COVER...1276
FOREWORD...1277
BEFORE READING THIS MANUAL...1278
SAFETY INFORMATION...1279
INTRODUCTION...1280
USE OF MACHINE...1280
FRONT/REAR, LEFT/RIGHT DIRECTIONS OF MACHINE...1280
NECESSARY INFORMATION...1281
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE...1281
EPA REGULATIONS, ENGINE NUMBER PLATE...1281
POSITION OF SERVICE METER...1282
TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR...1282
CONTENTS...1283
SAFETY...1287
SAFETY...1288
SAFETY LABELS...1291
LOCATION OF SAFETY LABELS...1292
SAFETY LABELS...1293
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE...1297
PRECAUTIONS BEFORE STARTING OPERATION...1297
PREPARATIONS FOR SAFE OPERATION...1297
FIRE PREVENTION...1299
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE...1300
DO NOT GET CAUGHT IN ARTICULATING PORTION...1303
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES...1303
UNAUTHORIZED MODIFICATION...1303
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS...1303
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING...1304
PRECAUTIONS FOR OPERATION...1305
PRECAUTIONS FOR JOBSITE...1305
STARTING ENGINE...1307
OPERATION...1309
TRANSPORTATION...1316
TOWING...1317
PRECAUTIONS FOR MAINTENANCE...1318
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE...1318
PRECAUTIONS FOR INSPECTION AND MAINTENANCE...1323
TIRES...1328
OPERATION...1331
GENERAL VIEW...1332
GENERAL VIEW OF MACHINE...1332
GENERAL VIEW OF CONTROLS AND GAUGES...1333
EXPLANATION OF COMPONENTS...1335
MACHINE MONITOR...1335
SWITCHES...1344
CONTROL LEVERS, PEDALS...1347
CAP AND COVER WITH LOCK...1352
FRAME LOCK BAR...1353
ENGINE FOOD...1353
TOWING PIN...1353
FUSE...1355
FUSIBLE LINK...1356
MANUAL POCKET...1356
POWER OUTLET...1357
HANDLING MACHINES EQUIPPED WITH KOMTRAX...1358
OPERATION...1359
CHECK BEFORE STARTING ENGINE, ADJUST...1359
STARTING ENGINE...1377
OPERATIONS AND CHECKS AFTER STARTING ENGINE...1380
STOPPING ENGINE...1382
MOVING THE MACHINE (DIRECTIONAL, SPEED), STOPPING THE MACHINE...1383
TURNING...1387
OPERATION OF WORK EQUIPMENT...1388
HANDLING FRONT ATTACHMENT SERVICE HYDRAULIC CIRCUIT...1390
WORK POSSIBLE USING WHEEL LOADER...1391
PRECAUTIONS FOR OPERATION...1395
ADJUSTING WORK EQUIPMENT POSTURE...1397
PARKING MACHINE...1399
CHECKS AFTER COMPLETION OF OPERATION...1401
LOCKING...1401
HANDLING THE TIRES...1402
TRANSPORTATION...1405
TRANSPORTATION PROCEDURE...1405
LOADING, UNLOADING WORK WITH TRAILERS...1405
LIFTING MACHINE...1407
COLD WEATHER OPERATION...1411
PRECAUTIONS FOR LOW TEMPERATURE...1411
PRECAUTIONS AFTER COMPLETION OF WORK...1412
AFTER COLD WEATHER...1412
LONG-TERM STORAGE...1413
BEFORE STORAGE...1413
DURING STORAGE...1413
AFTER STORAGE...1413
TROUBLESHOOTING...1414
WHEN MACHINE RUNS OUT OF FUEL...1414
METHOD OF TOWING MACHINE...1414
IF BATTERY IS DISCHARGED...1417
OTHER TROUBLE...1421
MAINTENANCE...1427
GUIDES TO MAINTENANCE...1428
OUTLINES OF SERVICE...1430
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC...1430
OUTLINE OF ELECTRIC SYSTEM...1434
WEAR PARTS...1435
WEAR PARTS LIST...1435
RECOMMENDED FUEL, COOLANT, AND LUBRICANT...1436
USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE...1437
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN KOMATSU GENUINE OIL...1438
STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS...1439
TORQUE LIST...1439
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS...1440
MAINTENANCE SCHEDULE CHART...1441
MAINTENANCE SCHEDULE CHART...1441
SERVICE PROCEDURE...1442
WHEN REQUIRED...1442
CHECK BEFORE STARTING...1455
EXPLANATION OF SYMBOLS FOR LUBRICATION STANDARD TABLE...1455
EVERY 250 HOURS SERVICE...1456
EVERY 500 HOURS SERVICE...1458
EVERY 1000 HOURS SERVICE...1461
EVERY 1500 HOURS SERVICE...1464
EVERY 2000 HOURS SERVICE...1465
EVERY 4000 HOURS SERVICE...1468
SPECIFICATIONS...1469
SPECIFICATIONS...1470
ATTACHMENTS, OPTIONS...1471
HANDLING CAB...1472
SWITCHES...1472
AIR CONDITIONER...1477
CONTROL PANEL AND COMPONENTS...1477
AIR CONDITIONER CONTROLS...1479
AIR CONDITIONER MAINTENANCE...1480
CAR RADIO...1485
EXPLANATION OF COMPONENTS...1485
METHOD OF USE...1486
PRECAUTIONS WHEN USING...1488
INDEX...1489
TEN00513-00 - Wheel Loader WA50-6 Operation & Maintenance Manual...1493
COVER...1493
FOREWORD...1494
BEFORE READING THIS MANUAL...1495
SAFETY INFORMATION...1496
INTRODUCTION...1497
USE OF MACHINE...1497
FRONT/REAR, LEFT/RIGHT DIRECTIONS OF MACHINE...1497
NECESSARY INFORMATION...1498
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE...1498
EPA REGULATIONS, ENGINE NUMBER PLATE...1498
POSITION OF SERVICE METER...1499
TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR...1499
CONTENTS...1500
SAFETY...1504
SAFETY...1505
SAFETY LABELS...1508
LOCATION OF SAFETY LABELS...1509
SAFETY LABELS...1510
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE...1514
PRECAUTIONS BEFORE STARTING OPERATION...1514
PREPARATIONS FOR SAFE OPERATION...1514
FIRE PREVENTION...1516
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE...1517
DO NOT GET CAUGHT IN ARTICULATING PORTION...1520
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES...1520
UNAUTHORIZED MODIFICATION...1520
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS...1520
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING...1521
PRECAUTIONS FOR OPERATION...1522
PRECAUTIONS FOR JOBSITE...1522
STARTING ENGINE...1524
OPERATION...1526
TRANSPORTATION...1533
TOWING...1534
PRECAUTIONS FOR MAINTENANCE...1535
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE...1535
PRECAUTIONS FOR INSPECTION AND MAINTENANCE...1540
TIRES...1545
OPERATION...1548
GENERAL VIEW...1549
GENERAL VIEW OF MACHINE...1549
GENERAL VIEW OF CONTROLS AND GAUGES...1550
EXPLANATION OF COMPONENTS...1552
MACHINE MONITOR...1552
SWITCHES...1561
CONTROL LEVERS, PEDALS...1564
CAP AND COVER WITH LOCK...1569
FRAME LOCK BAR...1570
ENGINE FOOD...1570
TOWING PIN...1570
FUSE...1572
FUSIBLE LINK...1573
MANUAL POCKET...1573
POWER OUTLET...1574
HANDLING MACHINES EQUIPPED WITH KOMTRAX...1575
OPERATION...1576
CHECK BEFORE STARTING ENGINE, ADJUST...1576
STARTING ENGINE...1595
OPERATIONS AND CHECKS AFTER STARTING ENGINE...1598
STOPPING ENGINE...1600
MOVING THE MACHINE (DIRECTIONAL, SPEED), STOPPING THE MACHINE...1601
TURNING...1605
OPERATION OF WORK EQUIPMENT...1606
HANDLING FRONT ATTACHMENT SERVICE HYDRAULIC CIRCUIT...1608
WORK POSSIBLE USING WHEEL LOADER...1609
PRECAUTIONS FOR OPERATION...1613
ADJUSTING WORK EQUIPMENT POSTURE...1615
PARKING MACHINE...1617
CHECKS AFTER COMPLETION OF OPERATION...1619
LOCKING...1619
HANDLING THE TIRES...1620
TRANSPORTATION...1623
TRANSPORTATION PROCEDURE...1623
LOADING, UNLOADING WORK WITH TRAILERS...1623
LIFTING MACHINE...1625
COLD WEATHER OPERATION...1629
PRECAUTIONS FOR LOW TEMPERATURE...1629
PRECAUTIONS AFTER COMPLETION OF WORK...1630
AFTER COLD WEATHER...1630
LONG-TERM STORAGE...1631
BEFORE STORAGE...1631
DURING STORAGE...1631
AFTER STORAGE...1631
TROUBLESHOOTING...1632
WHEN MACHINE RUNS OUT OF FUEL...1632
METHOD OF TOWING MACHINE...1632
IF BATTERY IS DISCHARGED...1635
OTHER TROUBLE...1639
MAINTENANCE...1644
GUIDES TO MAINTENANCE...1645
OUTLINES OF SERVICE...1647
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC...1647
OUTLINE OF ELECTRIC SYSTEM...1651
WEAR PARTS...1652
WEAR PARTS LIST...1652
RECOMMENDED FUEL, COOLANT, AND LUBRICANT...1653
USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE...1654
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN KOMATSU GENUINE OIL...1655
STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS...1656
TORQUE LIST...1656
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS...1657
MAINTENANCE SCHEDULE CHART...1658
MAINTENANCE SCHEDULE CHART...1658
SERVICE PROCEDURE...1659
WHEN REQUIRED...1659
CHECK BEFORE STARTING...1672
EXPLANATION OF SYMBOLS FOR LUBRICATION STANDARD TABLE...1672
EVERY 250 HOURS SERVICE...1673
EVERY 500 HOURS SERVICE...1675
EVERY 1000 HOURS SERVICE...1678
EVERY 1500 HOURS SERVICE...1681
EVERY 2000 HOURS SERVICE...1682
EVERY 4000 HOURS SERVICE...1685
SPECIFICATIONS...1686
SPECIFICATIONS...1687
ATTACHMENTS, OPTIONS...1688
HANDLING CAB...1689
SWITCHES...1689
AIR CONDITIONER...1694
CONTROL PANEL AND COMPONENTS...1694
AIR CONDITIONER CONTROLS...1696
AIR CONDITIONER MAINTENANCE...1697
CAR RADIO...1702
EXPLANATION OF COMPONENTS...1702
METHOD OF USE...1703
PRECAUTIONS WHEN USING...1705
INDEX...1706
TEN00533-01 - Wheel Loader WA50-6 Operation & Maintenance Manual...1710
COVER...1710
FOREWORD...1711
BEFORE READING THIS MANUAL...1712
SAFETY INFORMATION...1713
INTRODUCTION...1714
USE OF MACHINE...1714
FRONT/REAR, LEFT/RIGHT DIRECTIONS OF MACHINE...1714
PROTECTIVE STRUCTURE...1714
NECESSARY INFORMATION...1715
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE...1715
EPA REGULATIONS, ENGINE NUMBER PLATE...1715
POSITION OF SERVICE METER...1716
TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR...1716
CONTENTS...1717
SAFETY...1721
SAFETY...1722
SAFETY LABELS...1725
LOCATION OF SAFETY LABELS...1726
SAFETY LABELS...1727
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE...1732
PRECAUTIONS BEFORE STARTING OPERATION...1732
PREPARATIONS FOR SAFE OPERATION...1732
FIRE PREVENTION...1734
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE...1735
DO NOT GET CAUGHT IN ARTICULATING PORTION...1738
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES...1738
UNAUTHORIZED MODIFICATION...1738
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS...1739
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING...1739
PRECAUTIONS FOR OPERATION...1740
PRECAUTIONS FOR JOBSITE...1740
STARTING ENGINE...1742
OPERATION...1744
TRANSPORTATION...1751
TOWING...1752
PRECAUTIONS FOR MAINTENANCE...1753
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE...1753
PRECAUTIONS FOR INSPECTION AND MAINTENANCE...1758
TIRES...1763
OPERATION...1765
GENERAL VIEW...1766
GENERAL VIEW OF MACHINE...1766
GENERAL VIEW OF CONTROLS AND GAUGES...1767
EXPLANATION OF COMPONENTS...1769
MACHINE MONITOR...1769
SWITCHES...1778
CONTROL LEVERS, PEDALS...1781
CAP AND COVER WITH LOCK...1786
FRAME LOCK BAR...1787
ENGINE FOOD...1787
TOWING PIN...1787
FUSE...1789
FUSIBLE LINK...1790
MANUAL POCKET...1790
POWER OUTLET...1791
HANDLING MACHINES EQUIPPED WITH KOMTRAX...1792
OPERATION...1793
CHECK BEFORE STARTING ENGINE, ADJUST...1793
STARTING ENGINE...1812
OPERATIONS AND CHECKS AFTER STARTING ENGINE...1815
STOPPING ENGINE...1817
MOVING THE MACHINE (DIRECTIONAL, SPEED), STOPPING THE MACHINE...1818
TURNING...1822
OPERATION OF WORK EQUIPMENT...1823
HANDLING FRONT ATTACHMENT SERVICE HYDRAULIC CIRCUIT...1825
WORK POSSIBLE USING WHEEL LOADER...1826
PRECAUTIONS FOR OPERATION...1830
ADJUSTING WORK EQUIPMENT POSTURE...1832
PARKING MACHINE...1834
CHECKS AFTER COMPLETION OF OPERATION...1836
LOCKING...1836
HANDLING THE TIRES...1837
TRANSPORTATION...1840
TRANSPORTATION PROCEDURE...1840
LOADING, UNLOADING WORK WITH TRAILERS...1840
LIFTING MACHINE...1842
COLD WEATHER OPERATION...1846
PRECAUTIONS FOR LOW TEMPERATURE...1846
PRECAUTIONS AFTER COMPLETION OF WORK...1847
AFTER COLD WEATHER...1847
LONG-TERM STORAGE...1848
BEFORE STORAGE...1848
DURING STORAGE...1848
AFTER STORAGE...1848
TROUBLESHOOTING...1849
WHEN MACHINE RUNS OUT OF FUEL...1849
METHOD OF TOWING MACHINE...1849
IF BATTERY IS DISCHARGED...1852
OTHER TROUBLE...1856
MAINTENANCE...1861
GUIDES TO MAINTENANCE...1862
OUTLINES OF SERVICE...1864
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC...1864
OUTLINE OF ELECTRIC SYSTEM...1867
WEAR PARTS...1868
WEAR PARTS LIST...1868
RECOMMENDED FUEL, COOLANT, AND LUBRICANT...1869
USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE...1870
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN KOMATSU GENUINE OIL...1871
STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS...1872
TORQUE LIST...1872
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS...1873
MAINTENANCE SCHEDULE CHART...1874
MAINTENANCE SCHEDULE CHART...1874
SERVICE PROCEDURE...1875
WHEN REQUIRED...1875
CHECK BEFORE STARTING...1888
EXPLANATION OF SYMBOLS FOR LUBRICATION STANDARD TABLE...1888
EVERY 250 HOURS SERVICE...1889
EVERY 500 HOURS SERVICE...1891
EVERY 1000 HOURS SERVICE...1894
EVERY 1500 HOURS SERVICE...1897
EVERY 2000 HOURS SERVICE...1898
EVERY 4000 HOURS SERVICE...1901
SPECIFICATIONS...1903
SPECIFICATIONS...1904
ATTACHMENTS, OPTIONS...1905
HANDLING CAB...1906
SWITCHES...1906
AIR CONDITIONER...1911
CONTROL PANEL AND COMPONENTS...1911
AIR CONDITIONER CONTROLS...1913
AIR CONDITIONER MAINTENANCE...1914
CAR RADIO...1919
EXPLANATION OF COMPONENTS...1919
METHOD OF USE...1920
PRECAUTIONS WHEN USING...1922
INDEX...1923
