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Komatsu PC650-5, PC650SE-5, PC650LC-5, PC710-5, PC710SE-5 Hydraulic Excavator Shop Manual PDF
Komatsu PC650-5, PC650SE-5, PC650LC-5, PC710-5, PC710SE-5 Hydraulic Excavator Shop Manual
FILE DETAILS:
Komatsu PC650-5, PC650SE-5, PC650LC-5, PC710-5, PC710SE-5 Hydraulic Excavator Shop Manual
File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : SEBM000607
Total Pages : 734
DESCRIPTION:
Komatsu PC650-5, PC650SE-5, PC650LC-5, PC710-5, PC710SE-5 Hydraulic Excavator Shop Manual
FOREWORD:
GENERAL:
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity. This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following chapters: these chapters are further divided into the each main group of components.
STRUCTURE AND FUNCTION:
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting.
TESTING AND ADJUSTING:
This section explains checks to be made before and after performing repairs , as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating “problems” to “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY:
This section explains the order to be followed when removing, installing, disassembling or assembling eachr component, as well as precautions to be taken for these operations.
MAINTENANCE STANDARD:
This section gives the judgement standards when inspecting disassembled parts.
TABLE OF CONTENTS:
Komatsu PC650-5, PC650SE-5, PC650LC-5, PC710-5, PC710SE-5 Hydraulic Excavator Shop Manual
COVER.................................................................................................................................................. 1 CONTENTS............................................................................................................................................... 2 01 GENERAL............................................................................................................................................. 23 ASSEMBLY DRAWING................................................................................................................................... 24 SPECIFICATIONS..................................................................................................................................... 30 WEIGHT TABLE....................................................................................................................................... 36 LIST OF LUBRICANT AND WATER........................................................................................................................ 42 10 STRUCTURE AND FUNCTION.............................................................................................................................. 43 PTO (POWER TAKE-OFF)............................................................................................................................... 44 PTO LUBRICATION SYSTEM............................................................................................................................. 45 RADIATOR AND OIL COOLER............................................................................................................................ 46 POWER TRAIN........................................................................................................................................ 47 SWING MACHINERY.................................................................................................................................... 48 SWING CIRCLE....................................................................................................................................... 49 FINAL DRIVE........................................................................................................................................ 50 TRACK FRAME........................................................................................................................................ 51 IDLER CUSHION...................................................................................................................................... 53 IDLER.............................................................................................................................................. 53 TRACK ROLLER....................................................................................................................................... 54 CARRIER ROLLER..................................................................................................................................... 54 TRACK SHOE......................................................................................................................................... 55 AIR PIPING......................................................................................................................................... 56 AIR CIRCUIT DIAGRAM................................................................................................................................ 57 AIR COMPRESSOR..................................................................................................................................... 57 AIR GOVERNOR....................................................................................................................................... 58 AIR TANK........................................................................................................................................... 58 SAFETY VALVE....................................................................................................................................... 59 HORN VALVE......................................................................................................................................... 59 GREASE PUMP........................................................................................................................................ 60 HYDRAULIC UNIT LOCATION............................................................................................................................ 61 HYDRAULIC CIRCUIT DIAGRAM.......................................................................................................................... 63 HYDRAULIC TANK..................................................................................................................................... 66 NO.1 PUMP.......................................................................................................................................... 67 NO.2 PUMP.......................................................................................................................................... 86 SWING PUMP......................................................................................................................................... 91 CHARGING AND PTO LUBRICATING PUMP.................................................................................................................. 96 LINE OIL FILTER.................................................................................................................................... 97 PILOT OIL FILTER................................................................................................................................... 97 RETURN OIL FILTER.................................................................................................................................. 98 DRAIN OIL FILTER................................................................................................................................... 98 L.H. 5-SPOOL CONTROL VALVE......................................................................................................................... 99 R.H. 4-SPOOL CONTROL VALVE.........................................................................................................................103 SWING CONTROL VALVE................................................................................................................................108 SWING MOTOR........................................................................................................................................111 CENTER SWIVEL JOINT................................................................................................................................115 TRAVEL MOTOR.......................................................................................................................................116 CONTROL RELIEF VALVE...............................................................................................................................123 SAFETY LOCK VALVE..................................................................................................................................124 ACCUMULATOR........................................................................................................................................126 PPC VALVE..........................................................................................................................................127 SOLENOID VALVE ASSEMBLY............................................................................................................................131 EPC VALVE..........................................................................................................................................136 AUTO-DECELERATION CYLINDER.........................................................................................................................138 PPC SHUTTLE VALVE..................................................................................................................................139 HYDRAULIC CYLINDER.................................................................................................................................140 WORK EQUIPMENT.....................................................................................................................................144 ELECTRICAL WIRING DIAGRAM..........................................................................................................................147 ELECTRICAL CIRCUIT DIAGRAM.........................................................................................................................153 ENGINE CONTROL.....................................................................................................................................169 MACHINE CONTROL SYSTEM.............................................................................................................................171 WORK EQUIPMENT CONTROL SYSTEM......................................................................................................................201 MACHINE MONITORING SYSTEM..........................................................................................................................206 20 TESTING AND ADJUSTING...............................................................................................................................227 TABLE OF JUDGEMENT STANDARD VALUE..................................................................................................................228 STANDARD VALUE TABLE FOR ELECTRICAL SYSTEM.........................................................................................................245 TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING...................................................................................................254 MEASURING ENGINE SPEED.............................................................................................................................255 MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE).....................................................................................................256 MEASURING EXHAUST GAS TEMPERATURE..................................................................................................................257 MEASURING EXHAUST GAS COLOR........................................................................................................................258 ADJUSTING VALVE CLEARANCE..........................................................................................................................259 MEASURING COMPRESSION PRESSURE.....................................................................................................................260 MEASURING BLOW-BY PRESSURE.........................................................................................................................261 TESTING AND ADJUSTING FUEL INJECTION TIMING........................................................................................................262 MEASURING ENGINE OIL PRESSURE......................................................................................................................264 TESTING AND ADJUSTING ALTERNATOR BELT TENSION......................................................................................................265 TESTING AND ADJUSTING FAN BELT TENSION.............................................................................................................265 ADJUSTING FUEL CONTROL LINKAGE.....................................................................................................................266 ADJUSTING ENGINE SPEED SENSOR......................................................................................................................271 CHECKING SWING CIRCLE BEARING CLEARANCE............................................................................................................272 TESTING AND ADJUSTING TRACK SHOE TENSION...........................................................................................................273 TESTING AND ADJUSTING WORK EQUIPMENT, SWING, TRAVEL CIRCUIT PRESSURE...............................................................................274 TESTING AND ADJUSTING CONTROL CIRCUIT PRESSURE.....................................................................................................277 TESTING AND ADJUSTING PISTON PUMP CONTROL PRESSURE.................................................................................................279 MEASURING STROKE OF SERVO PISTON...................................................................................................................285 TESTING AND ADJUSTING TRAVEL DEVIATION.............................................................................................................286 MEASURING OIL LEAKAGE..............................................................................................................................288 CHECKING LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT.......................................................................................292 MEASURING PPC VALVE OUTPUT PRESSURE................................................................................................................293 ADJUSTING WORK EQUIPMENT, SWING PPC VALVE..........................................................................................................294 MEASURING SOLENOID VALVE OUTLET PRESSURE...........................................................................................................295 BLEEDING AIR.......................................................................................................................................296 RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT..................................................................................................298 TROUBLESHOOTING....................................................................................................................................299 POINTS TO REMEMBER WHEN TROUBLESHOOTING........................................................................................................300 SEQUENCE OF EVENTS IN TROUBLESHOOTING..........................................................................................................301 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE...............................................................................................302 CHECKS BEFORE TROUBLESHOOTING..................................................................................................................310 ELECTRICAL CIRCUIT DIAGRAM.....................................................................................................................311 POSITION OF CONNECTORS FOR TROUBLESHOOTING.....................................................................................................336 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS.....................................................................................................340 SELF-DIAGNOSTIC DISPLAY OF CONTROLLERS.........................................................................................................350 METHOD OF USING JUDGEMENT TABLE................................................................................................................351 METHOD OF USING TROUBLESHOOTING CHART..........................................................................................................353 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)..................................................................................................355 JUDGEMENT TABLE FOR ELECTRICAL SYSTEM OR HYDRAULIC, MECHANICAL SYSTEM......................................................................356 E-1. EXCESSIVE DEVIATION WHEN TRAVEL (CONSTANT DEVIATION)..................................................................................358 E-2. SPEED OF WORK EQUIPMENT, SWING, TRAVEL IS EXTREMELY SLOW OR LACKS POWER...............................................................361 E-3. ENGINE STALLS DURING OPERATIONS, OR ENGINE SPEED DROPS................................................................................365 E-4. EVEN WHEN MODE SELECTOR SWITCH IS SWITCHED, OUTPUT DOES NOT CHANGE....................................................................368 E-5. AUTO-DECELERATION FUNCTION DOES NOT WORK PROPERLY (THERE IS NO DECELERATION, OR DECELERATION STAYS ON)................................375 E-6. UPPER STRUCTURE DOES NOT SWING........................................................................................................383 E-7. EXCESSIVE HYDRAULIC DRIFT OF SWING....................................................................................................388 E-8. TRAVEL SPEED DOES NOT CHANGE..........................................................................................................392 E-9. EXCESSIVE TRAVEL DEVIATION DURING COMPOUND OPERATIONS (BUT ONLY FOR COMBINATION OF TRAVEL AND WORK EQUIPMENT).........................394 E-10. DEFECTIVE OPERATION OF HEAVY LIFT FUNCTION...........................................................................................405 E-11. MACHINE PUSH UP FUNCTION IS NOT ACTUATED.............................................................................................413 E-12. ENGINE DOES NOT START................................................................................................................420 E-13. ENGINE DOES NOT STOP.................................................................................................................423 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)....................................................................................425 BEFORE CARRYING OUT TROUBLESHOOTING OF HYDRAULIC SYSTME (H MODE)...........................................................................426 H-1. EXCESSIVE TRAVEL DEVIATION (GOES OUTSIDE STANDARD ONLY DURING TRAVEL OPERATIONS, WHEN TRAVEL LEVER IS OPERATED TO END OF STROKE)......429 H-2. EXCESSIVE TRAVEL DEVIATION DURING COMPOUND OPERATIONS.................................................................................433 H-3. EXCESSIVE DEVIATION WHEN STARTING.....................................................................................................434 H-4. CONTROL LEVERS ARE EXTREMELY HEAVY....................................................................................................436 H-5. WORK EQUIPMENT, TRAVEL, SWING START TO MOVE SUDDENLY (IN FINE CONTROL RANGE)..........................................................437 H-6. SPEED OF WORK EQUIPMENT, SWING, TRAVEL IS EXTREMELY SLOW OR LACKS POWER ..............................................................438 H-7. ENGINE STALLS OR ENGINE SPEED DROPS DURING OPERATION..................................................................................442 H-8. OUTPUT DOES NOT CHANGE WHEN MODE SELECTOR SWITCH IS OPERATED..........................................................................443 H-9. AUTO-DECELERATION FUNCTION DOES NOT WORK PROPERLY (THERE IS NO DECELERATION OR DECELERATION STAYS ON )................................443 H-10. ABNORMAL NOISE COMES FROM AROUND PUMP................................................................................................444 H-11. SWING SPEED IS SLOW, OR THERE IS EXCESSIVE OVERRUN WHEN STOPPING SWING...............................................................445 H-12. UPPER STRUCTURE DOES NOT SWING.......................................................................................................446 H-13. EXCESSIVE HYDRAULIC DRIFT OF SWING...................................................................................................447 H-14. EXCESSIVE HYDRAULIC DRIFT OF WORK EQUIPMENT..........................................................................................447 H-15. EXCESSIVE TIME LAG OF WORK EQUIPMENT.................................................................................................448 H-16. TRAVEL SPEED DOES ONT CHANGE.........................................................................................................449 H-17. DEFECTIVE ACTUATION OF HEAVY-LIFT FUNCTION (BOOM RAISE SET PRESSURE DOES NOT INCREASE, OR INCREASES BUT DOES NOT GO DOWN)............450 H-18. DEFECTIVE ACTUATION OF MACHINE PUSH UP FUNCTION (BOOM LOWER SET PRESSURE DOES NOT INCREASE, OR INCRESES BUT DOES NOT GO DOWN)........450 TABLE OF FAILURE MODES AND CAUSES..........................................................................................................451 TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M MODE).............................................................................................453 M-1. WHEN STARTING SWITCH IS TURNED ON, MONITOR PANEL DISPLAY DOES NOT APPEAR..............................................................454 M-2. WHEN STARTING SWITCH IS TURNED ON, MONITOR PANEL DISPLAY DOES NOT GO OUT..............................................................454 M-3. WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), CHECK ITEMS FLASH. (FLUID LEVEL OF CHECK ITEMS ARE CORRECT).......................455 M-4. WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED, CHECK ITEMS FLASH............................................................458 M-5. WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), CAUTION ITEMS FLASH...............................................................460 M-6. WHEN STARTING SWITCH IS TURNED ON AMD ENGINE IS STARTED, CAUTION ITEMS FLASH..........................................................461 M-7. WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED) FOR 1 SECOND, OR WHEN CAUTION ITEMS ARE FLASHING, WARNING BUZZER DOES NOT SOUND....466 M-8. NO ABNORMAL DISPLAY ON MONITOR BUT WARNING BUZZER SOUNDS..............................................................................467 M-9. PANEL LIGHTING OF MONITOR PANEL DOES NOT LIGHT UP (LIQUID CRYSTAL DISPLAY IS NORMAL)..................................................468 M-10. WHEN ENGINE IS STARTED, SERVICE METER DOES NOT MOVE, WHEN ENGINE IS STOPPED, SERVICE METER MOVES.....................................470 M-11. COOLANT TEMPERATURE GAUGE SHOWS ABNORMALLY LOW TEMPERATURE...........................................................................472 M-12. COOLANT TEMPERATURE GAUGE GIVES NO DISPLAY...........................................................................................473 M-13. FUEL LEVEL GAUGE ALWAYS DISPLAYS FULL................................................................................................474 M-14. FUEL LEVEL GAUGE GIVES NO DISPLAY....................................................................................................475 M-15. HEAD LAMP, WORKING LAMP DO NOT LIGHT UP..............................................................................................476 M-16. WIPERS DO NOT WORK...................................................................................................................479 30 DISASSEMBLY AND ASSEMBLY............................................................................................................................481 METHOD OF USING MANUAL.............................................................................................................................483 PRECAUTIONS WHEN CARRYING OUT OPERATION............................................................................................................484 SPECIAL TOOL LIST..................................................................................................................................486 STARTING MOTOR.....................................................................................................................................494 REMOVAL AND INSTALLATION.......................................................................................................................494 ALTERNATOR.........................................................................................................................................495 REMOVAL AND INSTALLATION.......................................................................................................................495 NOZZLE HOLDER......................................................................................................................................496 REMOVAL........................................................................................................................................496 INSTALLATION...................................................................................................................................497 ENGINE OIL COOLER..................................................................................................................................498 REMOVAL AND INSTALLATION.......................................................................................................................498 FUEL INJECTION PUMP................................................................................................................................499 REMOVAL AND INSTALLATION.......................................................................................................................499 WATER PUMP.........................................................................................................................................500 REMOVAL AND INSTALLATION.......................................................................................................................500 TURBOCHARGER.......................................................................................................................................501 REMOVAL AND INSTALLATION.......................................................................................................................501 HYRDAULIC COOLER...................................................................................................................................502 REMOVAL AND INSTALLATION.......................................................................................................................502 CYLINDER HEAD......................................................................................................................................503 REMOVAL........................................................................................................................................503 INSTALLATION...................................................................................................................................506 RADIATOR...........................................................................................................................................508 REMOVAL AND INSTALLATION.......................................................................................................................508 AFTER-COOLER CORE..................................................................................................................................509 REMOVAL AND INSTALLATION.......................................................................................................................509 ENGINE, PTO, HYDRAULIC PUMP........................................................................................................................510 REMOVAL........................................................................................................................................510 INSTALLATION...................................................................................................................................514 PTO................................................................................................................................................515 REMOVAL........................................................................................................................................515 INSTALLATION...................................................................................................................................517 DISASSEMBLY....................................................................................................................................518 ASSEMBLY.......................................................................................................................................519 FINAL DRIVE........................................................................................................................................520 REMOVAL AND INSTALLATION.......................................................................................................................520 DISASSEMBLY....................................................................................................................................521 ASSEMBLY.......................................................................................................................................525 REVOLVING FRAME....................................................................................................................................530 REMOVAL........................................................................................................................................530 INSTALLATION...................................................................................................................................531 SWING MACHINERY....................................................................................................................................532 REMOVAL AND INSTALLATION.......................................................................................................................532 DISASSEMBLY....................................................................................................................................533 ASSEMBLY.......................................................................................................................................536 SWING CIRCLE.......................................................................................................................................540 REMOVAL AND INSTALLATION.......................................................................................................................540 TRACK SHOE.........................................................................................................................................541 REMOVAL........................................................................................................................................541 INSTALLATION...................................................................................................................................542 ONE LINK...........................................................................................................................................543 FIELD DISASSEMBLY..............................................................................................................................543 FIELD ASSEMBLY.................................................................................................................................545 SPROCKET...........................................................................................................................................547 REMOVAL AND INSTALLATION.......................................................................................................................547 IDLER..............................................................................................................................................548 REMOVAL AND INSTALLATION.......................................................................................................................548 FRONT IDLER........................................................................................................................................549 DISASSEMBLY....................................................................................................................................549 ASSEMBLY.......................................................................................................................................551 IDLER ADJUSTMENT CYLINDER..........................................................................................................................553 DISASSEMBLY AND ASSEMBLY.......................................................................................................................553 RECOIL SPRING......................................................................................................................................554 REMOVAL AND INSTALLATION.......................................................................................................................554 DISASSEMBLY AND ASSEMBLY.......................................................................................................................556 CARRIER ROLLER.....................................................................................................................................557 REMOVAL AND INSTALLATION.......................................................................................................................557 DISASSEMBLY....................................................................................................................................558 ASSEMBLY.......................................................................................................................................559 TRACK ROLLER.......................................................................................................................................561 REMOVAL AND INSTALLATION.......................................................................................................................561 DISASSEMBLY....................................................................................................................................562 ASSEMBLY.......................................................................................................................................563 NO.1 PUMP..........................................................................................................................................565 REMOVAL........................................................................................................................................565 INSTALLATION...................................................................................................................................566 HYDRAULIC PUMP.....................................................................................................................................567 DISASSEMBLY....................................................................................................................................567 ASSEMBLY.......................................................................................................................................572 SERVO VALVE........................................................................................................................................583 REMOVAL AND INSTALLATION.......................................................................................................................583 TVC VALVE..........................................................................................................................................584 REMOVAL AND INSTALLATION.......................................................................................................................584 CO・NC VALVE........................................................................................................................................585 REMOVAL AND INSTALLATION.......................................................................................................................585 NO.2 PUMP..........................................................................................................................................586 REMOVAL........................................................................................................................................586 INSTALLATION...................................................................................................................................587 SWING PUMP.........................................................................................................................................588 REMOVAL AND INSTALLATION.......................................................................................................................588 DISASSEMBLY....................................................................................................................................589 ASSEMBLY.......................................................................................................................................592 CHARGING, PTO LUBRICATION PUMP.....................................................................................................................603 REMOVAL AND INSTALLATION.......................................................................................................................603 MAIN RELIEF VALVE (FOR SWING CONTROL VALVE)........................................................................................................604 REMOVAL AND INSTALLATION.......................................................................................................................604 DISASSEMBLY AND ASSEMBLY.......................................................................................................................605 MAIN CONTROL VALVE (FOR WORK EQUIPMENT,4-,5-SPOOL CONTROL VALVE)...................................................................................606 REMOVAL AND INSTALLATION.......................................................................................................................606 DISASSEMBLY AND ASSEMBLY.......................................................................................................................607 SWING CONTROL VALVE................................................................................................................................608 REMOVAL AND INSTALLATION.......................................................................................................................608 DISASSEMBLY....................................................................................................................................609 ASSEMBLY.......................................................................................................................................610 CONTROL VALVE (WORK EQUIPMENT).....................................................................................................................611 DISASSEMBLY....................................................................................................................................611 ASSEMBLY.......................................................................................................................................613 SWING MOTOR........................................................................................................................................615 REMOVAL AND INSTALLATION.......................................................................................................................615 DISASSEMBLY....................................................................................................................................616 ASSEMBLY.......................................................................................................................................619 CENTER SWIVEL JOINT................................................................................................................................624 REMOVAL AND INSTALLATION.......................................................................................................................624 DISASSEMBLY....................................................................................................................................625 ASSEMBLY.......................................................................................................................................626 TRAVEL MOTOR.......................................................................................................................................627 REMOVAL AND INSTALLATION.......................................................................................................................627 DISASSEMBLY....................................................................................................................................628 ASSEMBLY.......................................................................................................................................638 CHARGING PUMP RELIEF VALVE.........................................................................................................................650 REMOVAL AND INSTALLATION.......................................................................................................................650 DISASSEMBLY AND ASSEMBLY.......................................................................................................................651 PPC VALVE (FOR TRAVEL).............................................................................................................................652 DISASSEMBLY AND ASSEMBLY.......................................................................................................................652 PPC VALVE (FOR WORK EQUIPMENT, SWING)..............................................................................................................653 DISASSEMBLY AND ASSEMBLY.......................................................................................................................653 AUTO-DECELERATION CYLINDER.........................................................................................................................654 REMOVAL AND INSTALLATION.......................................................................................................................654 BOOM CYLINDER (BACK HOE)...........................................................................................................................655 REMOVAL........................................................................................................................................655 INSTALLATION...................................................................................................................................656 ARM CYLINDER (BACK HOE)............................................................................................................................657 REMOVAL AND INSTALLATION.......................................................................................................................657 BUCKET CYLINDER (BACK HOE).........................................................................................................................658 REMOVAL........................................................................................................................................658 INSTALLATION...................................................................................................................................659 BOOM CYLINDER (LOADING SHOVEL).....................................................................................................................660 REMOVAL........................................................................................................................................660 INSTALLATION...................................................................................................................................661 ARM CYLINDER (LOADING SHOVEL)......................................................................................................................662 REMOVAL........................................................................................................................................662 INSTALLATION...................................................................................................................................663 BUCKET CYLINDER (LOADING SHOVEL)...................................................................................................................664 REMOVAL........................................................................................................................................664 INSTALLATION...................................................................................................................................665 BOTTOM, DUMP CYLINDER (LOADING SHOVEL).............................................................................................................666 REMOVAL AND INSTALLATION.......................................................................................................................666 HYDRAULIC CYLINDER.................................................................................................................................667 DISASSEMBLY....................................................................................................................................667 ASSEMBLY.......................................................................................................................................669 BUCKET (BACK HOE)..................................................................................................................................672 REMOVAL AND INSTALLATION.......................................................................................................................672 ARM (BACK HOE).....................................................................................................................................673 REMOVAL........................................................................................................................................673 INSTALLATION...................................................................................................................................674 BOOM (BACK HOE)....................................................................................................................................675 REMOVAL AND INSTALLATION.......................................................................................................................675 BUCKET AND ARM (BACK HOE)..........................................................................................................................676 REMOVAL AND INSTALLATION.......................................................................................................................676 WORK EQUIPMENT (BACK HOE)..........................................................................................................................677 REMOVAL........................................................................................................................................677 INSTALLATION...................................................................................................................................678 BUCKET (LOADING SHOVEL)............................................................................................................................679 REMOVAL AND INSTALLATION.......................................................................................................................679 ARM (LOADING SHOVEL)...............................................................................................................................680 REMOVAL........................................................................................................................................680 INSTALLATION...................................................................................................................................681 BOOM (LOADING SHOVEL)..............................................................................................................................682 REMOVAL........................................................................................................................................682 INSTALLATION...................................................................................................................................683 WORK EQUIPMENT (LOADING SHOVEL)....................................................................................................................684 REMOVAL........................................................................................................................................684 INSTALLATION...................................................................................................................................685 OPERATOR'S CAB.....................................................................................................................................686 REMOVAL AND INSTALLATION.......................................................................................................................686 COUNTERWEIGHT......................................................................................................................................687 REMOVAL AND INSTALLATION.......................................................................................................................687 MONITOR PANEL......................................................................................................................................688 REMOVAL AND INSTALLATION.......................................................................................................................688 AUTO-DECELERATION・OLSS CONTROLLER..................................................................................................................689 REMOVAL AND INSTALLATION.......................................................................................................................689 40 MAINTENANCE STANDARD................................................................................................................................690 PTO................................................................................................................................................691 SWING CIRCLE.......................................................................................................................................692 SWING MACHINERY....................................................................................................................................693 FINAL DRIVE........................................................................................................................................695 TRACK FRAME AND RECOIL SPRING......................................................................................................................697 TRACK ROLLER.......................................................................................................................................698 IDLER..............................................................................................................................................699 CARRIER ROLLER.....................................................................................................................................701 TRACK SHOE.........................................................................................................................................703 CHARGING AND PTO LUBRICATION PUMP..................................................................................................................704 L.H. 5-SPOOL CONTROL VALVE.........................................................................................................................705 R.H. 4-SPOOL CONTROL VALVE.........................................................................................................................709 SWING CONTROL VALVE................................................................................................................................712 SWING MOTOR........................................................................................................................................714 CENTER SWIVEL JOINT................................................................................................................................715 PILOT RELIEF VALVE.................................................................................................................................716 PPC VALVE..........................................................................................................................................717 HYDRAULIC CYLINDER.................................................................................................................................719 WORK EQUIPMENT.....................................................................................................................................721
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