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INDEX
MAINTENANCE STANDARD OF HYDRAULIC TANK ................................................................... 60-43
MAINTENANCE STANDARD OF WORK EQUIPMENT AND COOLING FAN PUMP .................... 60-44
MAINTENANCE STANDARD OF CONTROL VALVE..................................................................... 60-47
MAINTENANCE STANDARD OF RIPPER PPC VALVE................................................................. 60-53
MAINTENANCE STANDARD OF 5-PORT VALVE OF EPC AND SOLENOID ............................... 60-55
MAINTENANCE STANDARD OF QUICK DROP VALVE................................................................ 60-57
WORK EQUIPMENT............................................................................................................................. 60-59
MAINTENANCE STANDARD OF FRONT WORK EQUIPMENT.................................................... 60-59
MAINTENANCE STANDARD OF CUTTING EDGE AND END BIT ................................................ 60-62
MAINTENANCE STANDARD OF STROKE SENSING BLADE LIFT CYLINDER ........................... 60-63
MAINTENANCE STANDARD OF STROKE SENSING BLADE TILT CYLINDER ........................... 60-64
MAINTENANCE STANDARD OF STROKE SENSING BLADE ANGLE CYLINDER ...................... 60-65
MAINTENANCE STANDARD OF STROKE AND RESET SENSOR FOR BLADE LIFT CYLINDER ........
................................................................................................................................................... 60-66
MAINTENANCE STANDARD OF STROKE SENSOR FOR BLADE TILT CYLINDER.................... 60-67
MAINTENANCE STANDARD OF STROKE SENSOR FOR BLADE ANGLE CYLINDER............... 60-68
MAINTENANCE STANDARD OF FIXED MULTI-SHANK RIPPER................................................. 60-69
MAINTENANCE STANDARD OF RIPPER LIFT CYLINDER.......................................................... 60-71
CAB AND ITS ATTACHMENTS ............................................................................................................ 60-72
MAINTENANCE STANDARD OF CAB MOUNT............................................................................. 60-72
ELECTRICAL SYSTEM ........................................................................................................................ 60-74
MAINTENANCE STANDARD OF ELECTRIC STEERING CONTROL LEVER............................... 60-74
80 APPENDIX................................................................................................................................................ 80-1
CONTENTS ............................................................................................................................................ 80-2
ABBREVIATION LIST ............................................................................................................................. 80-3
AIR CONDITIONER SYSTEM ................................................................................................................ 80-9
PRECAUTIONS FOR REFRIGERANT ............................................................................................ 80-9
AIR CONDITIONER COMPONENT ............................................................................................... 80-10
SPECIFICATIONS OF AIR CONDITIONER ................................................................................... 80-13
CONFIGURATION AND FUNCTION OF REFRIGERATION CYCLE ............................................. 80-14
OUTLINE OF REFRIGERATION CYCLE ....................................................................................... 80-15
COMPONENT PARTS OF AIR CONDITIONER SYSTEM .................................................................... 80-17
AIR CONDITIONER UNIT.............................................................................................................. 80-17
COMPONENT PARTS OF AIR CONDITIONER UNIT.................................................................... 80-19
COMPRESSOR ............................................................................................................................. 80-22
CONDENSER ................................................................................................................................ 80-23
RECEIVER DRIER......................................................................................................................... 80-25
EXPLANATION OF PROCEDURE FOR TESTING AND TROUBLESHOOTING OF AIR CONDITIONER......
.......................................................................................................................................................... 80-27
CIRCUIT DIAGRAM OF AIR CONDITIONER ....................................................................................... 80-30
AIR CONDITIONER SYSTEM DIAGRAM ............................................................................................. 80-31
CONTROL FUNCTION OF AIR CONDITIONER................................................................................... 80-32
INSTALLATION LOCATIONS OF AIR CONDITIONER PARTS AND ARRANGEMENT OF CONNECTORS ..
.......................................................................................................................................................... 80-33
TEST RELAYS...................................................................................................................................... 80-37
METHOD FOR TESTING RELAYS ................................................................................................ 80-37
AIR CONDITIONER TROUBLESHOOTING CHART 1 ......................................................................... 80-39
AIR CONDITIONER TROUBLESHOOTING CHART 2 ......................................................................... 80-40
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE........................................................... 80-43
A-1 TROUBLESHOOTING FOR CONDENSER FAN............................................................................ 80-45
A-2 TROUBLESHOOTING FOR BLOWER MOTOR SYSTEM (NO AIR COMES OUT OR AIR FLOW IS
ABNORMAL) ..................................................................................................................................... 80-48
A-3 TROUBLESHOOTING FOR TEMPERATURE CONTROL FUNCTION .......................................... 80-51
TROUBLESHOOTING USING GAUGE PRESSURE............................................................................ 80-55
CONNECTION OF SERVICE TOOL ..................................................................................................... 80-57
METHOD FOR CONNECTING SERVICE TOOL ........................................................................... 80-58
PRECAUTIONS FOR DISCONNECTING AND CONNECTING HOSES AND TUBES IN AIR CONDITION-
ER PIPINGS...................................................................................................................................... 80-59
00-18
00 INDEX AND FOREWORD
D51EXI-24, D51PXI-24
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