Komatsu D51EXi -24 Shop Manual page 17

00 INDEX AND FOREWORD
H-10 UNUSUAL NOISE IS HEARD FROM AROUND HST PUMP OR MOTOR .........................40-1132
H-11 HST OIL TEMPERATURE (HYDRAULIC OIL TEMPERATURE) RISES TOO HIGH ..........40-1134
H-12 ALL WORK EQUIPMENT DO NOT OPERATE ..................................................................40-1136
H-13 ALL WORK EQUIPMENTS SPEED OR POWER IS LOW .................................................40-1138
H-14 BLADE LIFT SPEED OR POWER IS LOW ........................................................................40-1139
H-15 BLADE TILT SPEED OR POWER IS LOW ........................................................................40-1141
H-16 BLADE ANGLE SPEED OR POWER IS LOW....................................................................40-1142
H-17 TIME LAG OF BLADE LIFT IS LARGE ..............................................................................40-1143
H-18 HYDRAULIC DRIFT OF LIFTED BLADE IS LARGE ..........................................................40-1144
H-19 HYDRAULIC DRIFT OF TILTED BLADE IS LARGE...........................................................40-1145
H-20 UNUSUAL NOISE IS HEARD FROM AROUND WORK EQUIPMENT AND COOLING FAN
PUMP OR CONTROL VALVE .................................................................................................40-1146
H-21 FAN SPEED IS ABNORMAL (TOO HIGH OR LOW, OR STATIONARY) ............................40-1147
H-22 UNUSUAL NOISE IS HEARD FROM AROUND FAN .........................................................40-1149
TROUBLESHOOTING OF ENGINE (S-MODE) .................................................................................40-1150
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (S MODE)...............................40-1150
S-1 ENGINE DOES NOT CRANK WHEN STARTING SWITCH IS TURNED TO START POSITION.......
................................................................................................................................................40-1151
S-2 ENGINE CRANKS BUT NO EXHAUST GAS COMES OUT .................................................40-1152
S-3 FUEL IS BEING INJECTED BUT ENGINE DOES NOT START (MISFIRING: ENGINE CRANKS
BUT DOES NOT START) ........................................................................................................40-1153
S-4 ENGINE STARTABILITY IS POOR.......................................................................................40-1155
S-5 ENGINE DOES NOT PICK UP SMOOTHLY ........................................................................40-1157
S-6 ENGINE STOPS DURING OPERATION ..............................................................................40-1159
S-7 ENGINE RUNS ROUGH OR IS UNSTABLE ........................................................................40-1161
S-8 ENGINE LACKS POWER.....................................................................................................40-1162
S-9 EXHAUST SMOKE IS BLACK..............................................................................................40-1164
S-10 ENGINE OIL CONSUMPTION IS EXCESSIVE ..................................................................40-1166
S-11 OIL BECOMES CONTAMINATED QUICKLY ......................................................................40-1167
S-12 FUEL CONSUMPTION IS EXCESSIVE .............................................................................40-1168
S-13 OIL IS IN COOLANT (OR COOLANT SPURTS BACK OR COOLANT LEVEL GOES DOWN) .......
................................................................................................................................................40-1169
S-14 OIL PRESSURE DROPS ...................................................................................................40-1170
S-15 FUEL MIXES INTO ENGINE OIL........................................................................................40-1172
S-16 WATER MIXES INTO ENGINE OIL (MILKY) ......................................................................40-1173
S-17 COOLANT TEMPERATURE RISES TOO HIGH (OVERHEATING) ....................................40-1174
S-18 UNUSUAL NOISE IS HEARD.............................................................................................40-1175
S-19 VIBRATION IS EXCESSIVE ...............................................................................................40-1176
S-20 AIR CANNOT BE BLED FROM FUEL CIRCUIT.................................................................40-1177
S-21 ACTIVE REGENERATION IS EXECUTED FREQUENTLY ................................................40-1178
S-22 ACTIVE REGENERATION TAKES TIME............................................................................40-1179
S-23 WHITE SMOKE IS EXHAUSTED DURING ACTIVE REGENERATION..............................40-1180
S-24 AdBlue/DEF CONSUMPTION IS EXCESSIVE ...................................................................40-1181
S-25 THERE IS UNUSUAL SMELL (IRRITATING ODOR) ..........................................................40-1183
S-26 FOREIGN MATERIALS ENTER AdBlue/DEF (AdBlue/DEF INCREASES).........................40-1184
50 DISASSEMBLY AND ASSEMBLY............................................................................................................. 50-1
CONTENTS ............................................................................................................................................ 50-2
ABBREVIATION LIST ............................................................................................................................. 50-7
RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY ........................................................ 50-13
HOW TO READ THIS MANUAL..................................................................................................... 50-13
COATING MATERIALS LIST.......................................................................................................... 50-15
SPECIAL TOOLS LIST .................................................................................................................. 50-20
SKETCHES OF SPECIAL TOOLS................................................................................................. 50-42
ENGINE AND COOLING SYSTEM....................................................................................................... 50-55
REMOVE AND INSTALL SUPPLY PUMP ASSEMBLY .................................................................. 50-55
REMOVE AND INSTALL INJECTOR ASSEMBLY ......................................................................... 50-75
REMOVE AND INSTALL CYLINDER HEAD ASSEMBLY .............................................................50-100
REMOVE AND INSTALL EGR VALVE ASSEMBLY.......................................................................50-143
D51EXI-24, D51PXI-24
INDEX
00-15