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Komatsu A12001 Shop Manual page 4

Hydraulic excavator

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INDEX
TEST BOOST PRESSURE............................................................................................................ 30-15
TEST EXHAUST GAS COLOR ...................................................................................................... 30-17
TEST AND ADJUST VALVE CLEARANCE .................................................................................... 30-20
TEST COMPRESSION PRESSURE.............................................................................................. 30-22
TEST BLOWBY PRESSURE ......................................................................................................... 30-27
TEST ENGINE OIL PRESSURE .................................................................................................... 30-29
TEST EGR VALVE AND KVGT OIL PRESSURE ........................................................................... 30-30
TEST FUEL PRESSURE ............................................................................................................... 30-32
TEST FUEL DISCHARGE, RETURN AND LEAKAGE ................................................................... 30-38
BLEEDING AIR FROM FUEL SYSTEM ......................................................................................... 30-44
TEST FUEL CIRCUIT FOR LEAKAGE .......................................................................................... 30-45
HANDLE CYLINDER CUT-OUT MODE OPERATION.................................................................... 30-47
HANDLE NO-INJECTION CRANKING OPERATION ..................................................................... 30-48
TEST AND ADJUST AIR CONDITIONER COMPRESSOR BELT TENSION ................................. 30-49
TEST COOLING FAN SPEED ...................................................................................................... 30-51
WRITING CORRECTION FOR ASH IN SOOT ACCUMULATION TO ENGINE CONTROLLER ....30-52
TEST SCR RELATED FUNCTIONS............................................................................................... 30-53
CLEAN AdBlue/DEF TANK ............................................................................................................ 30-75
BLEED AIR FROM COOLANT CIRCUIT OF AdBlue/DEF TANK ................................................... 30-79
POWER TRAIN..................................................................................................................................... 30-81
TEST SWING CIRCLE BEARING CLEARANCE ........................................................................... 30-81
UNDERCARRIAGE AND FRAME......................................................................................................... 30-82
TEST AND ADJUST TRACK TENSION......................................................................................... 30-82
HYDRAULIC SYSTEM.......................................................................................................................... 30-84
RELEASE REMAINING PRESSURE FROM HYDRAULIC SYSTEM............................................. 30-84
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, SWING, AND TRAVEL CIRCUITS ........
................................................................................................................................................... 30-85
TEST OIL PRESSURE OF CONTROL CIRCUIT ........................................................................... 30-95
TEST AND ADJUST OIL PRESSURE IN PUMP PC CONTROL CIRCUIT .................................... 30-97
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT....................................30-100
TEST OUTLET PRESSURE OF SOLENOID VALVE ....................................................................30-107
TEST PPC VALVE OUTLET PRESSURE ..................................................................................... 30-111
ADJUST WORK EQUIPMENT AND SWING PPC VALVES ..........................................................30-113
TEST PUMP SWASH PLATE SENSOR........................................................................................30-114
TEST THE PARTS CAUSING HYDRAULIC DRIFT IN WORK EQUIPMENT................................30-115
TEST OIL LEAKAGE ....................................................................................................................30-117
BLEED AIR FROM HYDRAULIC CIRCUIT ...................................................................................30-120
CAB AND ITS ATTACHMENTS ...........................................................................................................30-123
TEST CAB TIPPING STOPPER ...................................................................................................30-123
METHOD FOR ADJUSTING MIRRORS .......................................................................................30-124
ELECTRICAL SYSTEM .......................................................................................................................30-130
SET AND OPERATE MACHINE MONITOR..................................................................................30-130
METHOD FOR STARTING UP KOMTRAX TERMINAL ................................................................30-207
ADJUST REARVIEW CAMERA ANGLE .......................................................................................30-212
HANDLE VOLTAGE CIRCUIT OF ENGINE CONTROLLER .........................................................30-215
HANDLE BATTERY DISCONNECT SWITCH ...............................................................................30-216
TEST DIODES ..............................................................................................................................30-217
Pm CLINIC...........................................................................................................................................30-218
Pm CLINIC SERVICE ...................................................................................................................30-218
40 TROUBLESHOOTING .............................................................................................................................. 40-1
CONTENTS ............................................................................................................................................ 40-2
RELATED INFORMATION ON TROUBLESHOOTING ......................................................................... 40-12
GENERAL TROUBLESHOOTING POINTS ................................................................................... 40-12
TROUBLESHOOTING POINTS FOR UREA SCR SYSTEM.......................................................... 40-13
SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................... 40-26
CHECKS BEFORE TROUBLESHOOTING .................................................................................... 40-28
CHECKS BEFORE TROUBLESHOOTING .................................................................................... 40-30
TESTING IN ACCORDANCE WITH TESTING PROCEDURE....................................................... 40-32
00-4
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00 INDEX AND FOREWORD
PC210LC-11

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