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Komatsu GD655-6 Shop Manual page 7

Motor grader

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00 INDEX AND FOREWORD
TEST AND ADJUST WORK EQUIPMENT OIL PRESSURE ........................................................30-179
TEST AND ADJUST OIL PRESSURE IN PUMP PC CONTROL CIRCUIT ...................................30-184
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT....................................30-188
TEST OIL PRESSURE IN LIFTER LOCK PIN CIRCUIT ...............................................................30-191
BLEED AIR FROM WORK EQUIPMENT CIRCUIT.......................................................................30-193
TEST COOLING FAN SPEED .....................................................................................................30-195
TEST COOLING FAN CIRCUIT OIL PRESSURE .........................................................................30-197
TEST INTERNAL OIL LEAKAGE OF WORK EQUIPMENT CYLINDER .......................................30-199
WORK EQUIPMENT............................................................................................................................30-205
ADJUST CLEARANCE IN DRAWBAR JOINT...............................................................................30-205
CHECK AND ADJUST CLEARANCE IN CIRCLE GUIDE .............................................................30-206
CHECK AND ADJUST CIRCLE ROTATION GEAR ......................................................................30-211
CHARGE ACCUMULATOR NITROGEN GAS PRESSURE FOR BLADE .....................................30-214
ELECTRICAL SYSTEM .......................................................................................................................30-218
SET AND ADJUST EACH EQUIPMENT.......................................................................................30-218
SET AND OPERATE MACHINE MONITOR..................................................................................30-220
METHOD FOR STARTING UP KOMTRAX TERMINAL ................................................................30-315
ADJUST REARVIEW CAMERA ANGLE .......................................................................................30-320
HANDLE VOLTAGE CIRCUIT OF ENGINE CONTROLLER .........................................................30-322
HANDLE BATTERY DISCONNECT SWITCH ...............................................................................30-323
TEST DIODES ..............................................................................................................................30-324
Pm CLINIC...........................................................................................................................................30-325
Pm CLINIC SERVICE ...................................................................................................................30-325
40 TROUBLESHOOTING .............................................................................................................................. 40-1
CONTENTS ............................................................................................................................................ 40-2
ABBREVIATION LIST ........................................................................................................................... 40-12
RELATED INFORMATION ON TROUBLESHOOTING ......................................................................... 40-18
GENERAL TROUBLESHOOTING POINTS ................................................................................... 40-18
TROUBLESHOOTING POINTS FOR UREA SCR SYSTEM.......................................................... 40-19
SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................... 40-31
CHECKS BEFORE TROUBLESHOOTING .................................................................................... 40-33
INSPECTION PROCEDURE BEFORE TROUBLESHOOTING ..................................................... 40-35
TESTING IN ACCORDANCE WITH TESTING PROCEDURE....................................................... 40-37
ELECTRICAL SYSTEM TROUBLESHOOTING - PREPARATION ................................................. 40-61
PROCEDURE FOR TESTING AND TROUBLESHOOTING .......................................................... 40-70
SYMPTOM AND TROUBLESHOOTING NUMBERS ..................................................................... 40-72
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE.................................................... 40-76
TROUBLESHOOTING METHOD FOR OPEN CIRCUIT IN WIRING HARNESS OF PRESSURE SEN-
SOR SYSTEM............................................................................................................................ 40-78
CONNECTORS LIST AND LAYOUT.............................................................................................. 40-81
CONNECTOR CONTACT IDENTIFICATION ................................................................................. 40-98
T-BRANCH BOX AND T-BRANCH ADAPTER TABLE ..................................................................40-138
FUSE LOCATION TABLE .............................................................................................................40-144
PRECAUTIONS FOR CLEANING AND REPLACING KDPF (KCSF and KDOC)..........................40-147
PREPARATION FOR TROUBLESHOOTING OF MACHINE MONITOR .......................................40-151
PROCEDURES FOR CREATING HARNESS CHECKER ON MACHINE MONITOR LCD UNIT...40-153
PREPARATION OF SHORT CIRCUIT ELECTRICAL CONNECTOR (FOR FAILURE CODES [CA1883]
AND [CA3135])..........................................................................................................................40-159
FAILURE CODES TABLE .............................................................................................................40-161
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) .....................................................40-178
FAILURE CODE [1500L0] .............................................................................................................40-178
FAILURE CODE [15G0MW]..........................................................................................................40-179
FAILURE CODE [15H0MW] ..........................................................................................................40-180
FAILURE CODE [15J0MW]...........................................................................................................40-181
FAILURE CODE [15K0MW] ..........................................................................................................40-182
FAILURE CODE [15L0MW]...........................................................................................................40-184
FAILURE CODE [15M0MW]..........................................................................................................40-186
FAILURE CODE [15N0MW] ..........................................................................................................40-188
GD655-6, GD675-6
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INDEX
00-5

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Gd675-6Gd655- 60001Gd675- 60001