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60 MAINTENANCE STANDARD.................................................................................................................... 60-1

CONTENTS ............................................................................................................................................ 60-2

ENGINE AND COOLING SYSTEM......................................................................................................... 60-3

MAINTENANCE STANDARD OF ENGINE MOUNT ........................................................................ 60-3

MAINTENANCE STANDARD OF COOLING SYSTEM .................................................................... 60-4

POWER TRAIN....................................................................................................................................... 60-5

MAINTENANCE STANDARD OF SWING CIRCLE.......................................................................... 60-5

MAINTENANCE STANDARD OF SWING MACHINERY.................................................................. 60-6

MAINTENANCE STANDARD OF FINAL DRIVE .............................................................................. 60-8

MAINTENANCE STANDARD OF SPROCKET .............................................................................. 60-10

MAINTENANCE STANDARD OF SPROCKET TOOTH PROFILE FULL-SCALE DRAWING..........60-11

UNDERCARRIAGE AND FRAME......................................................................................................... 60-13

MAINTENANCE STANDARD OF TRACK FRAME AND IDLER CUSHION.................................... 60-13

MAINTENANCE STANDARD OF IDLER ....................................................................................... 60-15

MAINTENANCE STANDARD OF TRACK ROLLER....................................................................... 60-17

MAINTENANCE STANDARD OF CARRIER ROLLER................................................................... 60-18

MAINTENANCE STANDARD OF TRACK SHOE........................................................................... 60-19

MAINTENANCE STANDARD OF TRIPLE SHOE........................................................................... 60-22

MAINTENANCE STANDARD OF SWAMP SHOE.......................................................................... 60-23

MAINTENANCE STANDARD OF ROAD LINER ............................................................................ 60-24

HYDRAULIC SYSTEM.......................................................................................................................... 60-25

MAINTENANCE STANDARD OF HYDRAULIC TANK ................................................................... 60-25

MAINTENANCE STANDARD OF MAIN PUMP.............................................................................. 60-26

MAINTENANCE STANDARD OF LS-EPC VALVE ......................................................................... 60-27

MAINTENANCE STANDARD OF PC-EPC VALVE......................................................................... 60-28

MAINTENANCE STANDARD OF SWING MOTOR........................................................................ 60-29

MAINTENANCE STANDARD OF TRAVEL MOTOR ...................................................................... 60-32

MAINTENANCE STANDARD OF CONTROL VALVE..................................................................... 60-35

MAINTENANCE STANDARD OF WORK EQUIPMENT AND SWING PPC VALVE ....................... 60-45

MAINTENANCE STANDARD OF TRAVEL PPC VALVE ................................................................ 60-48

MAINTENANCE STANDARD OF 1ST-LINE ATTACHMENT PPC VALVE (WITH EPC VALVE)...... 60-51

MAINTENANCE STANDARD OF 2ND-LINE ATTACHMENT PPC VALVE ..................................... 60-54

MAINTENANCE STANDARD OF SOLENOID VALVE.................................................................... 60-56

MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR HIGH PRES-

SURE) ........................................................................................................................................ 60-57

MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR LOW PRES-

SURE) ........................................................................................................................................ 60-58

MAINTENANCE STANDARD OF CENTER SWIVEL JOINT.......................................................... 60-59

WORK EQUIPMENT............................................................................................................................. 60-60

MAINTENANCE STANDARD OF WORK EQUIPMENT LINKAGE................................................. 60-60

MAINTENANCE STANDARD OF BOOM CYLINDER .................................................................... 60-69

MAINTENANCE STANDARD OF BOOM CYLINDER (LARGE DIAMETER PISTON).................... 60-70

MAINTENANCE STANDARD OF ARM CYLINDER ....................................................................... 60-71

MAINTENANCE STANDARD OF BUCKET CYLINDER................................................................. 60-72

80 APPENDIX................................................................................................................................................ 80-1

CONTENTS ............................................................................................................................................ 80-2

AIR CONDITIONER SYSTEM ................................................................................................................ 80-4

PRECAUTIONS FOR REFRIGERANT ............................................................................................ 80-4

AIR CONDITIONER COMPONENT ................................................................................................. 80-5

SPECIFICATIONS OF AIR CONDITIONER..................................................................................... 80-7

CONFIGURATION AND FUNCTION OF REFRIGERATION CYCLE ............................................... 80-8

OUTLINE OF REFRIGERATION CYCLE......................................................................................... 80-9

COMPONENT PARTS OF AIR CONDITIONER SYSTEM .....................................................................80-11

AIR CONDITIONER UNIT...............................................................................................................80-11

COMPONENT PARTS OF AIR CONDITIONER UNIT.................................................................... 80-15

AIR CONDITIONER CONTROLLER.............................................................................................. 80-19

COMPRESSOR ............................................................................................................................. 80-20

CONDENSER................................................................................................................................ 80-22