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Komatsu PC240LC-11 Shop Manual page 16

Hydraulic excavator
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INDEX
S-1 ENGINE DOES NOT CRANK WHEN STARTING SWITCH IS TURNED TO START POSITION.......
................................................................................................................................................40-1091
S-2 ENGINE CRANKS BUT NO EXHAUST GAS COMES OUT .................................................40-1092
S-3 FUEL IS BEING INJECTED BUT ENGINE DOES NOT START (MISFIRING: ENGINE CRANKS
BUT DOES NOT START) ........................................................................................................40-1093
S-4 ENGINE STARTABILITY IS POOR.......................................................................................40-1095
S-5 ENGINE DOES NOT PICK UP SMOOTHLY ........................................................................40-1097
S-6 ENGINE STOPS DURING OPERATION ..............................................................................40-1099
S-7 ENGINE RUNS ROUGH OR IS UNSTABLE ........................................................................40-1101
S-8 ENGINE LACKS POWER.....................................................................................................40-1102
S-9 KDPF GETS CLOGGED IN A SHORT TIME ........................................................................40-1104
S-10 ENGINE OIL CONSUMPTION IS EXCESSIVE ..................................................................40-1106
S-11 OIL BECOMES CONTAMINATED QUICKLY ......................................................................40-1107
S-12 FUEL CONSUMPTION IS EXCESSIVE .............................................................................40-1108
S-13 OIL IS IN COOLANT (OR COOLANT SPURTS BACK OR COOLANT LEVEL GOES DOWN) .......
................................................................................................................................................40-1109
S-14 OIL PRESSURE DROPS ................................................................................................... 40-1110
S-15 FUEL MIXES INTO ENGINE OIL........................................................................................ 40-1112
S-16 WATER MIXES INTO ENGINE OIL (MILKY) ...................................................................... 40-1113
S-17 COOLANT TEMPERATURE RISES TOO HIGH (OVERHEATING) .................................... 40-1114
S-18 UNUSUAL NOISE IS HEARD............................................................................................. 40-1115
S-19 VIBRATION IS EXCESSIVE ............................................................................................... 40-1116
S-20 AIR CANNOT BE BLED FROM FUEL CIRCUIT................................................................. 40-1117
S-21 ACTIVE REGENERATION IS EXECUTED FREQUENTLY ................................................ 40-1118
S-22 ACTIVE REGENERATION TAKES TIME............................................................................40-1120
S-23 WHITE SMOKE IS EXHAUSTED DURING ACTIVE REGENERATION..............................40-1121
S-24 AdBlue/DEF CONSUMPTION IS EXCESSIVE ...................................................................40-1122
S-25 THERE IS UNUSUAL SMELL (IRRITATING ODOR) ..........................................................40-1124
S-26 FOREIGN MATERIALS ENTER AdBlue/DEF (AdBlue/DEF INCREASES).........................40-1125
50 DISASSEMBLY AND ASSEMBLY............................................................................................................. 50-1
CONTENTS ............................................................................................................................................ 50-2
RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY .......................................................... 50-7
HOW TO READ THIS MANUAL....................................................................................................... 50-7
COATING MATERIALS LIST............................................................................................................ 50-8
SPECIAL TOOLS LIST .................................................................................................................. 50-13
SKETCHES OF SPECIAL TOOLS................................................................................................. 50-25
ENGINE AND COOLING SYSTEM....................................................................................................... 50-31
REMOVE AND INSTALL SUPPLY PUMP ASSEMBLY .................................................................. 50-31
REMOVE AND INSTALL INJECTOR ASSEMBLY ......................................................................... 50-38
REMOVE AND INSTALL CYLINDER HEAD ASSEMBLY .............................................................. 50-51
REMOVE AND INSTALL EGR VALVE ASSEMBLY........................................................................ 50-77
REMOVE AND INSTALL EGR COOLER ASSEMBLY.................................................................... 50-81
REMOVE AND INSTALL STARTER ASSEMBLY ........................................................................... 50-89
REMOVE AND INSTALL ALTERNATOR BELT .............................................................................. 50-93
REMOVE AND INSTALL RADIATOR ASSEMBLY ......................................................................... 50-97
REMOVE AND INSTALL HYDRAULIC OIL COOLER ASSEMBLY ...............................................50-101
REMOVE AND INSTALL AFTERCOOLER ASSEMBLY................................................................50-107
REMOVE AND INSTALL ENGINE AND MAIN PUMP ASSEMBLY ...............................................50-110
REMOVE AND INSTALL ENGINE FRONT OIL SEAL ..................................................................50-130
REMOVE AND INSTALL ENGINE REAR OIL SEAL.....................................................................50-137
REMOVE AND INSTALL FUEL COOLER ASSEMBLY .................................................................50-141
REMOVE AND INSTALL ENGINE HOOD ASSEMBLY .................................................................50-143
REMOVE AND INSTALL FUEL TANK ASSEMBLY .......................................................................50-151
REMOVE AND INSTALL AdBlue/DEF TANK ASSEMBLY ............................................................50-159
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR FLANGE ASSEMBLY..............................50-170
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR ................................................................50-181
REMOVE AND INSTALL AdBlue/DEF STRAINER........................................................................50-183
REMOVE AND INSTALL KDPF ASSEMBLY.................................................................................50-185
00-14
00 INDEX AND FOREWORD
PC240LC-11

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