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KOMATSU PC200Z-6LE HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A83001 & UP) KOMATSU PC200Z-6LE – PDF DOWNLOAD
$73.95 Original price was: $73.95.$27.95Current price is: $27.95.
- KOMATSU PC200Z-6LE HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL
- SERIAL NUMBER:A83001 & UP
- PUBLICATION NUMBER:CEBM001700
Category: komatsu
Tags: KOMATSU PC200Z-6LE HYDRAULIC EXCAVATOR, KOMATSU PC200Z-6LE HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A83001 & UP) KOMATSU PC200Z-6LE
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Description
KOMATSU PC200Z-6LE HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A83001 & UP) KOMATSU PC200Z-6LE
KOMATSU PC200Z-6LE HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A83001 & UP) KOMATSU PC200Z-6LE – PDF DOWNLOAD:
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KOMATSU PC200Z-6LE HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A83001 & UP) KOMATSU PC200Z-6LE
- 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 sections. These sections are further divided into each main group of components.
- GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts. - 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 each 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 PC200Z-6LE HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A83001 & UP) KOMATSU PC200Z-6LE
MAIN MENU................................................................................................................. 0 COVER..................................................................................................................... 1 CONTENTS.................................................................................................................. 2 01 GENERAL................................................................................................................ 20 GENERAL ASSEMBLY DRAWING.............................................................................................. 21 SPECIFICATIONS........................................................................................................ 23 WEIGHT TABLE.......................................................................................................... 25 FUEL, COOLANT AND LUBRICANTS.......................................................................................... 27 ENGINE OIL SPECIFICATION.............................................................................................. 28 NORMAL OPERATION.................................................................................................. 28 ARCTIC OPERATION.................................................................................................. 28 COOLANT............................................................................................................... 29 10 STRUCTURE AND FUNCTION................................................................................................. 30 ENGINE RELATED PARTS.................................................................................................. 33 SPECIFICATIONS.................................................................................................... 33 RADIATOR - OIL COOLER................................................................................................. 34 SPECIFICATIONS.................................................................................................... 34 ENGINE CONTROL SYSTEM................................................................................................. 35 POWER TRAIN........................................................................................................... 36 FINAL DRIVE........................................................................................................... 37 SPECIFICATIONS.................................................................................................... 37 SWING CIRCLE.......................................................................................................... 38 SPECIFICATIONS.................................................................................................... 38 SWING MACHINERY....................................................................................................... 39 SPECIFICATIONS.................................................................................................... 39 TRACK FRAME - RECOIL SPRING........................................................................................... 40 SPECIFICATIONS.................................................................................................... 40 TRACK SHOE............................................................................................................ 41 STANDARD SHOE..................................................................................................... 41 SELECTION OF TRACK SHOE........................................................................................... 41 HYDRAULIC PIPING DRAWING.............................................................................................. 42 HYDRAULIC CIRCUIT DIAGRAM............................................................................................. 43 HYDRAULIC TANK........................................................................................................ 44 HYDRAULIC PUMP........................................................................................................ 45 BASIC PUMP........................................................................................................ 45 Outline....................................................................................................... 45 Function...................................................................................................... 48 Structure..................................................................................................... 48 Operation..................................................................................................... 49 LS and PC valve................................................................................................... 51 Function...................................................................................................... 52 PC valve...................................................................................................... 52 IN-LINE OIL FILTER.................................................................................................... 63 Outline........................................................................................................... 63 CONTROL VALVE......................................................................................................... 64 Outline........................................................................................................... 64 6-spool valve (standard).......................................................................................... 65 Main structure................................................................................................ 66 SAFETY-SUCTION VALVE FOR SERVICE VALVE................................................................................ 70 SELF-REDUCING PRESSURE VALVE.......................................................................................... 71 Function.......................................................................................................... 73 Operation......................................................................................................... 73 CLSS.................................................................................................................. 76 Outline of CLSS................................................................................................... 76 Features...................................................................................................... 76 Structure..................................................................................................... 76 Basic principle............................................................................................... 77 Operation for each function and valve............................................................................. 79 Hydraulic circuit diagram for system.......................................................................... 79 System diagram................................................................................................ 81 Unload valve.................................................................................................. 82 Introduction of LS pressure................................................................................... 83 LS bypass valve............................................................................................... 84 Pressure compensation valve................................................................................... 85 Shuttle valve inside pressure compensation valve.............................................................. 88 Boom regeneration circuit..................................................................................... 89 Arm regeneration circuit...................................................................................... 91 Pump merge-divider valve (junction valve)..................................................................... 93 LS select valve............................................................................................... 95 Spool stroke modulation....................................................................................... 96 Timing valve..................................................................................................100 Operation of CLSS system as a whole...............................................................................101 When all work equipment is at neutral.........................................................................101 One side actuated, other side neutral.........................................................................103 Arm OUT, standard mode relief (cut-off control)...............................................................105 Boom RAISE....................................................................................................107 Swing operated independently..................................................................................109 Travel operated independently.................................................................................111 Compound operation............................................................................................113 SWING MOTOR...........................................................................................................115 BASIC MOTOR.......................................................................................................115 Swing lock valve..................................................................................................117 Operation.....................................................................................................117 Reverse prevention valve (swing dampening)........................................................................118 Operation diagram.............................................................................................118 Explanation of effect.........................................................................................118 Outline.......................................................................................................119 Operation.....................................................................................................119 CENTER SWIVEL JOINT...................................................................................................120 TRAVEL MOTOR..........................................................................................................121 Operation of parking brake........................................................................................123 Operation of brake valve..........................................................................................124 VALVE CONTROL.........................................................................................................127 WORK EQUIPMENT - SWING PPC VALVE......................................................................................128 Operation.........................................................................................................130 TRAVEL PPC VALVE......................................................................................................132 Operation.........................................................................................................134 SERVICE PPC VALVE.....................................................................................................136 Operation.........................................................................................................137 ACCUMULATOR...........................................................................................................139 Function..........................................................................................................139 Operation.........................................................................................................139 STRAIGHT-TRAVEL SYSTEM................................................................................................140 Function..........................................................................................................140 EPC SOLENOID VALVE....................................................................................................141 Operation.........................................................................................................142 BOOM LOCK VALVE.......................................................................................................143 Operation.........................................................................................................144 ADDITIONAL FILTER FOR BREAKER.........................................................................................146 WORK EQUIPMENT........................................................................................................147 AIR CONDITIONER.......................................................................................................148 ELECTRICAL WIRING DIAGRAM.............................................................................................149 ELECTRICAL CIRCUIT DIAGRAM............................................................................................151 ELECTRICAL CIRCUIT DIAGRAM FOR AIR CONDITIONER....................................................................153 ELECTRIC CONTROL SYSTEM...............................................................................................154 TOTAL SYSTEM DIAGRAM..............................................................................................154 PUMP CONTROL FUNCTION.............................................................................................155 Function......................................................................................................155 Pump controller...............................................................................................156 SWING LOCK, PPC LOCK FUNCTION.....................................................................................157 Operation.....................................................................................................158 MACHINE MONITOR SYSTEM................................................................................................159 FUNCTION..........................................................................................................159 Monitor panel.....................................................................................................160 Outline.......................................................................................................160 Input/Output signals..........................................................................................160 SENSORS...............................................................................................................162 Engine oil pressure sensor........................................................................................162 Coolant temperature sensor........................................................................................162 Fuel level sensor.................................................................................................163 20 TESTING, ADJUSTING AND TROUBLESHOOTING.................................................................................164 TESTING AND ADJUSTING.................................................................................................167 STANDARD VALUE TABLE..............................................................................................168 For engine....................................................................................................168 For chassis...................................................................................................169 For electrical system.........................................................................................177 TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING..................................................................180 MEASURING ENGINE SPEED............................................................................................181 MEASURING EXHAUST GAS COLOR.......................................................................................182 ADJUSTING VALVE CLEARANCE.........................................................................................183 MEASURING COMPRESSION PRESSURE....................................................................................184 MEASURING BLOW-BY PRESSURE........................................................................................184 TESTING AND ADJUSTING FUEL INJECTION TIMING.......................................................................185 MEASURE ENGINE OIL PRESSURE.......................................................................................186 TESTING AND ADJUSTING FAN BELT TENSION............................................................................187 TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR.................................................187 ADJUSTING SPEED SENSOR............................................................................................188 ADJUSTING FUEL CONTROL LEVER......................................................................................189 TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING, AND TRAVEL CIRCUIT.............................191 TESTING AND ADJUSTING PC VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE)......................................194 TESTING AND ADJUSTING LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE AND LS DIFFERENTIAL PRESSURE).........195 TESTING AND ADJUSTING CONTROL CIRCUIT OIL PRESSURE................................................................198 TESTING SOLENOID VALVE OUTPUT PRESSURE............................................................................199 MEASURING PPC VALVE OUTPUT PRESSURE...............................................................................201 Plug location diagram.........................................................................................202 ADJUSTING WORK EQUIPMENT - SWING PPC VALVE........................................................................203 TESTING TRAVEL DEVIATION..........................................................................................204 TESTING LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT.......................................................205 MEASURING OIL LEAKAGE.............................................................................................207 RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT.................................................................209 TESTING CLEARANCE OF SWING CIRCLE BEARING.........................................................................209 TESTING AND ADJUSTING TRACK SHOE TENSION..........................................................................210 BLEEDING AIR......................................................................................................211 TROUBLESHOOTING.......................................................................................................213 POINTS TO REMEMBER WHEN TROUBLESHOOTING...........................................................................214 SEQUENCE OF EVENTS IN TROUBLESHOOTING.............................................................................215 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE..................................................................216 Points to remember when handling electric equipment...........................................................216 Points to remember when troubleshooting electric circuits.....................................................221 Points to remember when handling hydraulic equipment..........................................................222 CHECKS BEFORE TROUBLESHOOTING.....................................................................................224 CONNECTOR TYPES AND MOUNTING LOCATIONS............................................................................225 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS........................................................................230 METHOD OF USING TROUBLESHOOTING CHARTS............................................................................240 TROUBLESHOOTING OF ENGINE SYSTEM (S MODE).........................................................................242 METHOD OF USING TROUBLESHOOTING CHARTS........................................................................242 S-1 Starting performance is poor (starting always takes time).................................................246 S-2 Engine does not start.....................................................................................248 S-3 Engine does not pick up smoothly (follow-up is poor)......................................................251 S-4 Engine stops during operations............................................................................252 S-5 Engine does not rotate smoothly (hunting).................................................................253 S-6 Engine lacks output (no power)............................................................................254 S-7 Exhaust smoke is black (incomplete combustion)............................................................255 S-8 Oil consumption is excessive (or exhaust smoke is blue)...................................................256 S-9 Oil becomes contaminated quickly..........................................................................257 S-10 Fuel consumption is excessive............................................................................258 S-11 Oil is in coolant, or coolant spurts back, or coolant level goes down....................................259 S-12 Oil pressure caution lamp lights up (drop in oil pressure)...............................................260 S-13 Oil level rises (coolant, fuel in oil)...................................................................261 S-14 Coolant temperature becomes too high (overheating).......................................................262 S-15 Abnormal noise is made...................................................................................263 S-16 Vibration is excessive...................................................................................264 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE).....................................................................265 JUDGEMENT TABLE FOR ELECTRICAL, HYDRAULIC , AND MECHANICAL SYSTEMS............................................265 ELECTRICAL CIRCUIT DIAGRAM FOR E MODE SYSTEM..................................................................267 E-1 Abnormality in PC-EPC control system......................................................................268 E-3 Abnormality in swing holding brake solenoid system........................................................271 E-4 Abnormality in PPC oil pressure lock solenoid system......................................................273 E-5 Abnormality in engine starting system (engine does not start).............................................275 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE).......................................................278 TABLE OF FAILURE MODES AND CAUSES.............................................................................278 H-1 Speeds of all work equipment, travel, swing are slow or lacks power.......................................282 H-2 There is excessive drop in engine speed, or engine stalls.................................................284 H-3 No work equipment, travel, swing move.....................................................................284 H-4 Abnormal noise generated (around pump)....................................................................285 H-5 Fine control ability is poor or response is poor..........................................................285 H-6 Boom is slow or lacks power...............................................................................286 H-7 Arm is slow or lacks power................................................................................288 H-8 Bucket is slow or lacks power.............................................................................290 H-9 Work equipment (boom, arm, bucket) does not move (but travel and swing are normal)........................290 H-10 Excessive hydraulic drift (boom, arm, bucket)............................................................291 H-11 Excessive time lag (engine at low idle)..................................................................292 H-12 Other equipment moves when single circuit is relieved....................................................292 H-13 In compound operations, work equipment with larger load is slow..........................................292 H-14 In swing + boom RAISE, boom RAISE is slow................................................................293 H-15 In swing + travel, travel speed drops excessively........................................................293 H-16 Travel deviation (deviation is excessive in normal travel and when starting).............................294 H-17 Travel speed is slow.....................................................................................295 H-18 Steering does not turn easily or lacks power.............................................................295 H-19 Travel does not move (one side only).....................................................................296 H-21 Does not swing...........................................................................................297 H-22 Swing acceleration is poor or swing speed is slow........................................................298 H-23 Excessive overrun when stopping swing....................................................................300 H-24 Excessive shock when stopping swing (one direction only).................................................300 H-25 Excessive abnormal noise when stopping swing.............................................................301 H-26 Excessive hydraulic drift of swing.......................................................................301 TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M MODE)................................................................303 Monitor system electrical circuit diagram.....................................................................303 M-1 When the starting switch is turned ON, no display is given (lamps do not light up for 3 seconds)..........304 M-2 When starting switch is turned ON, lamps light up for 3 seconds, but then do not go out...................304 M-3 When starting switch is turned ON, some lamps do not light up for 3 seconds...............................305 M-4 When power is turned on (before engine is started), charge caution lamp does not light up.................306 M-5 When power is turned on (before engine is started), engine oil pressure caution lamp does not light up....307 M-6 During preheating, preheating pilot does not light up.....................................................307 M-7 When switch is operated, swing lock lamp does not light up................................................308 M-8 Engine oil pressure caution lamp lights up when engine is running (engine oil pressure is normal).........309 M-9 Charge caution lamp lights up when engine is running......................................................310 M-10 Abnormality in coolant temperature gauge.................................................................310 M-11 Abnormality in fuel gauge................................................................................312 M-12 Defective operation of alarm buzzer......................................................................314 M-13 Engine is running, but service meter does not move.......................................................315 M-14 Night lighting does not light up.........................................................................316 M-15 Wiper does not move, or does not stop moving.............................................................317 M-16 Heater does not work.....................................................................................319 30 DISASSEMBLY AND ASSEMBLY...............................................................................................321 METHOD OF USING MANUAL................................................................................................325 When removing or installing unit assemblies.......................................................................325 General precautions...............................................................................................325 Listing of special tools..........................................................................................325 PRECAUTIONS WHEN CARRYING OUT OPERATION...............................................................................326 Precautions when carrying out removal work........................................................................326 Precautions when carrying out installation work...................................................................327 Precautions when completing the operations........................................................................327 SPECIAL TOOL LIST.....................................................................................................328 SKETCHES OF SPECIAL TOOLS.............................................................................................332 STARTING MOTOR........................................................................................................333 Removal...........................................................................................................333 Installation......................................................................................................333 ALTERNATOR............................................................................................................334 Removal...........................................................................................................334 Installation......................................................................................................334 AIR CONDITIONER COMPRESSOR............................................................................................335 Removal...........................................................................................................335 Installation......................................................................................................335 CONDENSER.............................................................................................................336 Removal...........................................................................................................336 Installation......................................................................................................336 FUEL INJECTION PUMP...................................................................................................337 Removal...........................................................................................................337 Installation......................................................................................................339 WATER PUMP............................................................................................................340 Removal...........................................................................................................340 Installation......................................................................................................341 NOZZLE HOLDER.........................................................................................................342 Removal...........................................................................................................342 Installation......................................................................................................342 TURBOCHARGER..........................................................................................................343 Removal...........................................................................................................343 Installation......................................................................................................343 THERMOSTAT............................................................................................................344 Removal...........................................................................................................344 Installation......................................................................................................345 CYLINDER HEAD ASSEMBLY................................................................................................346 Removal...........................................................................................................346 Installation......................................................................................................349 RADIATOR, HYDRAULIC OIL COOLER ASSEMBLY...............................................................................350 Removal...........................................................................................................350 Installation......................................................................................................352 ENGINE, MAIN PUMP.....................................................................................................353 Removal...........................................................................................................353 Installation......................................................................................................356 DAMPER................................................................................................................357 Removal...........................................................................................................357 Installation......................................................................................................357 FUEL TANK.............................................................................................................358 Removal...........................................................................................................358 Installation......................................................................................................358 CENTER SWIVEL JOINT...................................................................................................359 Removal...........................................................................................................359 Installation......................................................................................................360 Disassembly.......................................................................................................361 Assembly..........................................................................................................361 FINAL DRIVE...........................................................................................................362 Removal...........................................................................................................362 Installation......................................................................................................362 Disassembly.......................................................................................................363 Assembly..........................................................................................................366 SPROCKET..............................................................................................................371 Removal...........................................................................................................371 Installation......................................................................................................371 SWING MOTOR...........................................................................................................372 Removal...........................................................................................................372 Installation......................................................................................................372 SWING MACHINERY.......................................................................................................373 Removal...........................................................................................................373 Installation......................................................................................................373 Disassembly.......................................................................................................374 Assembly..........................................................................................................377 REVOLVING FRAME.......................................................................................................381 Removal...........................................................................................................381 Installation......................................................................................................382 SWING CIRCLE..........................................................................................................383 Removal...........................................................................................................383 Installation......................................................................................................383 IDLER - RECOIL SPRING.................................................................................................384 Removal...........................................................................................................384 Installation......................................................................................................384 RECOIL SPRING.........................................................................................................385 Disassembly.......................................................................................................385 Assembly..........................................................................................................386 IDLER.................................................................................................................387 Disassembly.......................................................................................................387 Assembly..........................................................................................................388 TRACK ROLLER..........................................................................................................390 Removal...........................................................................................................390 Installation......................................................................................................390 Disassembly.......................................................................................................391 Assembly..........................................................................................................392 CARRIER ROLLER........................................................................................................394 Removal...........................................................................................................394 Installation......................................................................................................394 Disassembly.......................................................................................................395 Assembly..........................................................................................................396 TRACK SHOE............................................................................................................398 Removal...........................................................................................................398 Installation......................................................................................................398 HYDRAULIC TANK........................................................................................................399 Removal...........................................................................................................399 Installation......................................................................................................400 MAIN PUMP.............................................................................................................401 Removal...........................................................................................................401 Installation......................................................................................................403 MAIN PUMP INPUT SHAFT OIL SEAL........................................................................................404 Removal...........................................................................................................404 Installation......................................................................................................404 CONTROL VALVE.........................................................................................................405 Removal...........................................................................................................405 Installation......................................................................................................406 Disassembly.......................................................................................................407 Assembly..........................................................................................................411 PUMP MERGE-DIVIDER VALVE..............................................................................................413 Disassembly.......................................................................................................413 Assembly..........................................................................................................413 MAIN RELIEF VALVE.....................................................................................................414 Disassembly.......................................................................................................414 Assembly..........................................................................................................414 PC VALVE..............................................................................................................415 Removal...........................................................................................................415 Installation......................................................................................................415 LS VALVE..............................................................................................................416 Removal...........................................................................................................416 Installation......................................................................................................416 PC-EPC VALVE..........................................................................................................417 Removal...........................................................................................................417 Installation......................................................................................................417 SOLENOID VALVE........................................................................................................418 Removal...........................................................................................................418 Installation......................................................................................................418 WORK EQUIPMENT - SWING PPC VALVE......................................................................................419 Removal...........................................................................................................419 Installation......................................................................................................419 Disassembly.......................................................................................................420 Assembly..........................................................................................................421 TRAVEL PPC VALVE......................................................................................................422 Removal...........................................................................................................422 Installation......................................................................................................422 Disassembly.......................................................................................................423 Installation......................................................................................................423 BOOM LOCK VALVE.......................................................................................................424 Removal...........................................................................................................424 Installation......................................................................................................424 BOOM CYLINDER.........................................................................................................425 Removal...........................................................................................................425 Installation......................................................................................................426 ARM CYLINDER..........................................................................................................427 Removal...........................................................................................................427 Installation......................................................................................................428 BUCKET CYLINDER.......................................................................................................429 Removal...........................................................................................................429 Installation......................................................................................................430 HYDRAULIC CYLINDER....................................................................................................431 Disassembly.......................................................................................................431 Assembly..........................................................................................................433 WORK EQUIPMENT........................................................................................................437 Removal...........................................................................................................437 Installation......................................................................................................438 BUCKET................................................................................................................439 Removal...........................................................................................................439 Installation......................................................................................................440 ARM...................................................................................................................441 Removal...........................................................................................................441 Installation......................................................................................................442 BUCKET - ARM..........................................................................................................443 Removal...........................................................................................................443 Installation......................................................................................................444 BOOM..................................................................................................................445 Removal...........................................................................................................445 Installation......................................................................................................446 OPERATOR’S CAB........................................................................................................447 Removal...........................................................................................................447 Installation......................................................................................................447 COUNTERWEIGHT.........................................................................................................448 Removal...........................................................................................................448 Installation......................................................................................................448 MONITOR...............................................................................................................449 Removal...........................................................................................................449 Installation......................................................................................................449 40 MAINTENANCE STANDARD...................................................................................................450 SWING MACHINERY.......................................................................................................451 SWING CIRCLE..........................................................................................................453 FINAL DRIVE...........................................................................................................454 TRACK FRAME - RECOIL SPRING...........................................................................................456 IDLER.................................................................................................................457 CARRIER ROLLER........................................................................................................459 TRACK ROLLER..........................................................................................................460 TRACK SHOE............................................................................................................461 CONTROL VALVE.........................................................................................................463 SAFETY-SUCTION VALVE FOR SERVICE VALVE................................................................................469 SELF-REDUCING PRESSURE VALVE..........................................................................................470 SWING MOTOR...........................................................................................................471 TRAVEL MOTOR..........................................................................................................472 WORK EQUIPMENT - SWING PPC VALVE......................................................................................473 TRAVEL PPC VALVE......................................................................................................474 SERVICE PPC VALVE.....................................................................................................475 CENTER SWIVEL JOINT...................................................................................................476 BOOM LOCK VALVE.......................................................................................................477 HYDRAULIC CYLINDER....................................................................................................478 Boom cylinder.....................................................................................................478 Arm cylinder......................................................................................................478 Bucket cylinder...................................................................................................478 WORK EQUIPMENT........................................................................................................480 DIMENSION OF WORK EQUIPMENT...........................................................................................482 Arm portion.......................................................................................................482 Bucket portion....................................................................................................484
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