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KOMATSU PC228US-3 PC228USLC-3 SHOP MANUAL SEBM030506 – PDF DOWNLOAD
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Description
KOMATSU PC228US-3 PC228USLC-3 SHOP MANUAL SEBM030506 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU PC228US-3 PC228USLC-3 SHOP MANUAL SEBM030506 – PDF DOWNLOAD
Language : English
Pages : 672
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU PC228US-3 PC228USLC-3 SHOP MANUAL SEBM030506 – PDF DOWNLOAD
COVER.............................................................................................................................. 1 CONTENTS........................................................................................................................... 2 01 GENERAL......................................................................................................................... 27 SPECIFICATION DIMENSION DRAWINGS............................................................................................... 28 SPECIFICATIONS................................................................................................................. 30 WEIGHT TABLE................................................................................................................... 36 FUEL,COOLANT,AND LUBRICANTS.................................................................................................... 40 10 STRUCTURE,FUNCTION AND MAINTENANCE STANDARD..................................................................................... 41 ENGINE RELATED PARTS........................................................................................................... 42 RADIATOR,OIL COOLER AND AFTERCOOLER............................................................................................ 43 POWER TRAIN.................................................................................................................... 44 FINAL DRIVE.................................................................................................................... 45 SWING CIRCLE................................................................................................................... 47 SWING MACHINERY................................................................................................................ 48 TRACK FRAME AND RECOIL SPRING.................................................................................................. 50 IDLER.......................................................................................................................... 52 CARRIER ROLLER................................................................................................................. 54 TRACK ROLLER................................................................................................................... 55 TRACK SHOE..................................................................................................................... 56 HYDRAULIC TANK................................................................................................................. 60 HYDRAULIC PUMP................................................................................................................. 61 LS-EPC VALVE................................................................................................................... 79 CONTROL VALVE.................................................................................................................. 82 MAIN RELIEF VALVE.............................................................................................................. 95 VARIABLE PRESSURE COMPENSATION VALVE........................................................................................... 96 CLSS........................................................................................................................... 97 SELF PRESSURE REDUCING VALVE...................................................................................................100 SWING MOTOR....................................................................................................................103 REVERSE PREVENTION VALVE.......................................................................................................108 CENTER SWIVEL JOINT............................................................................................................110 TRAVEL MOTOR...................................................................................................................111 TRAVEL JUNCTION VALVE..........................................................................................................120 TRAVEL PPC SHUTTLE VALVE.......................................................................................................122 VALVE CONTROL..................................................................................................................124 WORK EQUIPMENT AND SWING PPC VALVE.............................................................................................125 TRAVEL PPC VALVE...............................................................................................................129 SERVICE PPC VALVE..............................................................................................................138 SOLENOID VALVE.................................................................................................................141 ACCUMULATOR....................................................................................................................143 RETURN OIL FILTER..............................................................................................................144 BOOM HYDRAULIC DRIFT PREVENTION VALVE..........................................................................................145 LIFT CHECK VALVE...............................................................................................................148 ATTACHMENT CIRCUIT SELECTOR VALVE..............................................................................................149 HOLDING VALVE..................................................................................................................151 HYDRAULIC CYLINDER.............................................................................................................156 WORK EQUIPMENT.................................................................................................................158 AIR CONDITIONER................................................................................................................165 ENGINE CONTROL ................................................................................................................166 ELECTRONIC CONTROL SYSTEM......................................................................................................172 MONITOR SYSTEM.................................................................................................................199 SENSOR.........................................................................................................................219 20 TESTING AND ADJUSTING...........................................................................................................222 STANDARD VALUE TABLE FOR ENGINE................................................................................................223 STANDARD VALUE TABLE FOR CHASSIS...............................................................................................224 TESTING AND ADJUSTING..........................................................................................................234 TOOLS FOR TESTING,ADJUSTING AND TROUBLESHOOTING............................................................................235 INSPECTION AND ADJUSTMENT OF ENGINE SPEED..................................................................................237 MEASUREMENT OF EXHAUST GAS COLOR...........................................................................................239 ADJUSTMENT OF VALVE CLEARANCE..............................................................................................240 MEASUREMENT OF COMPRESSION PRESSURE........................................................................................242 MEASUREMENT OF BLOW-BY PRESSURE............................................................................................243 INSPECTION AND ADJUSTMENT OF FUEL INJECTION TIMING.........................................................................244 MEASUREMENT OF ENGINE OIL PRESSURE.........................................................................................246 ADJUSTMENT OF ENGINE SPEED SENSOR..........................................................................................247 INSPECTION AND ADJUSTMENT OF AIR COMPRESSOR BELT TENSION...................................................................247 EMERGENT ESCAPE FROM FAILURE IN ENGINE CONTROL SYSTEM......................................................................248 MEASUREMENT OF CLEARANCE IN SWING CIRCLE BEARINGS..........................................................................249 INSPECTION AND ADJUSTMENT OF TRACK SHOE TENSION............................................................................250 INSPECTION AND ADJUSTMENT OF HYDRAULIC OIL PRESSURE IN HYDRAULIC CIRCUIT FOR WORK EQUIPMENT,SWING AND TRAVEL...............251 MEASUREMENT OF CONTROL CIRCUIT OIL PRESSURE................................................................................255 INSPECTION AND ADJUSTMENT OF PUMP PC CONTROL CIRCUIT OIL PRESSURE..........................................................256 INSPECTION AND ADJUSTMENT OF PUMP LS CONTROL CIRCUIT OIL PRESSURE..........................................................259 MEASUREMENT OF SOLENOID VALVE OUTPUT PRESSURE .............................................................................264 MEASUREMENT OF PPC VALVE OUTPUT PRESSURE...................................................................................267 ADJUSTMENT OF WORK EQUIPMENT AND SWING PPC VALVE...........................................................................268 INSPECTION OF LOCATIONS OF HYDRAULIC DRIFT OF WORK EQUIPMENT...............................................................269 RELEASE OF RESIDUAL PRESSURE FROM HYDRAULIC CIRCUIT........................................................................271 MEASUREMENT OF OIL LEAKAGE.................................................................................................272 BLEEDING AIR FROM EACH PART................................................................................................274 PROCEDURE FOR REPLACING BOOM ANGLE POTENTIOMETER...........................................................................276 INSPECTION PROCEDURES FOR DIODE............................................................................................277 SPECIAL FUNCTION OF MONITOR PANEL .........................................................................................278 PREPARATIONS FOR TROUBLESHOOTING ELECTRCIAL SYSTEM.........................................................................304 PM-TUNE UP SERVICE.........................................................................................................305 TROUBLESHOOTING................................................................................................................310 POINTS TO REMEMBER WHEN TROUBLESHOOTING....................................................................................311 SEQUENCE OF EVENTS IN TROUBLESHOOTING......................................................................................312 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE...........................................................................313 CHECKS BEFORE TROUBLESHOOTING..............................................................................................321 CLASSIFICATION AND STEPS FOR TROUBLESHOOTING ..............................................................................322 CONNECTOR LOCATION CHART AND ELECTRICAL CIRCUIT DIAGRAM BY SYSTEM..........................................................326 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS.................................................................................341 T-BRANCH BOX AND T-BRANCH TABLE............................................................................................364 TROUBLESHOOTING WHEN ERROR CODE "ELECTRICAL SYSTEM" AND FAILURE CODE "MECHANICAL SYSTEM" ARE INDICATED.....................366 BEFORE TROUBLESHOOTING FOR DISPLAYED CODE..............................................................................368 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE.........................................................................375 ERROR CODE IN ELECTRICAL SYSTEM [E112](SHORT-CIRCUITING IN NORMAL ROTATION SYSTEM OF WINDSHIELD WIPER MOTOR DRIVE).....377 ERROR CODE IN ELECTRICAL SYSTEM [E113](SHORT-CIRCUITING IN REVERSE ROTATION SYSTEM OF WINDSHIELD WIPER MOTOR DRIVE)....379 ERROR CODE IN ELECTRICAL SYSTEM [E114](SHORT-CIRCUITING IN WINDOW WASHER DRIVE SYSTEM).................................381 ERROR CODE IN ELECTRICAL SYSTEM [E115](ABNORMAL WINDSHIELD WIPER MOTION)...............................................383 ERROR CODE IN ELECTRICAL SYSTEM [E116](ABNORMALITY IN RETRACTING WINDSHIELD WIPER) ....................................385 ERROR CODE IN ELECTRICAL SYSTEM (E201](SHORT-CIRCUITING ON TRAVEL INTERLOCKING SOLENOID)...............................387 ERROR CODE IN ELECTRICAL SYSTEM [E203](SHORT-CIRCUITING IN SWING HOLDING BRAKE SOLENOID)...............................389 ERROR CODE IN ELECTRICAL SYSTEM [E204](SHORT-CIRCUITING IN MERGE/DIVIDE SOLENOID)......................................391 ERROR CODE IN ELECTRICAL SYSTEM [E205](SHORT-CIRCUITING IN 2-STAGE RELIEF SOLENOID)....................................393 ERROR CODE IN ELECTRICAL SYSTEM[E206](SHORT-CIRCUITING IN TRAVEL SPEED SHIFTING SOLENOID)..............................395 ERROR CODE IN ELECTRICAL SYSTEM[E211](DISCONNECTION IN TRAVEL INTERLOCKING SOLENOID)...................................397 ERROR CODE IN ELECTRICAL SYSTEM[E213](DISCONNECTION IN SWING HOLDING BRAKE SOLENOID)...................................399 ERROR CODE IN ELECTRICAL SYSTEM [E214](DISCONNECTION OF MERGE/DIVIDE SOLENOID).........................................401 ERROR CODE IN ELECTRICAL SYSTEM [E215](DISCONNECTION IN 2-STAGE RELIEF SOLENOID).......................................403 ERROR CODE IN ELECTRICAL SYSTEM [E216](DISCONNECTION IN TRAVEL SPEED SHIFTING SOLENOID)................................405 ERROR CODE IN ELECTRICAL SYSTEM [E217](ABNORMALITY IN INPUTTING MODEL CODE)............................................407 ERROR CODE IN ELECTRICAL SYSTEM [E218](DISCONNECTION OF S-NET SIGNAL)..................................................409 ERROR CODE IN ELECTRICAL SYSTEM [E222](SHORT-CIRCUITING IN LS-EPC SOLENOID)............................................411 ERROR CODE IN ELECTRICAL SYSTEM [E223](DISCONNECTION IN LS-EPC SOLENOID SYSTEM)........................................412 ERROR CODE IN ELECTRICAL SYSTEM [E224](ABNORMALITY IN F PUMP PRESSURE SENSOR)..........................................413 ERROR CODE IN ELECTRICAL SYSTEM [E225](ABNORMALITY IN R PUMP PRESSURE SENSOR)..........................................415 ERROR CODE IN ELECTRICAL SYSTEM [E226](ABNORMALITY IN PRESSURE SENSOR POWER SOURCE)....................................417 ERROR CODE IN ELECTRICAL SYSTEM [E227](ABNORMALITY IN ENGINE ROTATION SENSOR) .........................................419 ERROR CODE IN ELECTRICAL SYSTEM [E228](SHORT-CIRCUITING IN ATTACHMENT RETURN SWITCHING RELAY)..........................420 ERROR CODE IN ELECTRICAL SYSTEM [E232](SHORT-CIRCUITING IN PC-EPC SOLENOID)............................................421 ERROR CODE IN ELECTRICAL SYSTEM [E233](DISCONNECTION IN PC-EPC SOLENOID SYSTEM)........................................423 ERROR CODE IN ELECTRICAL SYSTEM [E234](SHORT CIRCUIT IN BOOM THROTTLE EPC SOLENOID)....................................425 ERROR CODE IN ELECTRICAL SYSTEM [E235](DISCONNECTION IN BOOM THROTTLE EPC SOLENOID)....................................427 ERROR CODE IN ELECTRICAL SYSTEM [E238](DISCONNECTION IN ATTACHMENT RETURN SWITCHING RELAY).............................429 ERROR CODE IN ELECTRICAL SYSTEM [E241](DEFECTIVE INSTALLATION OF BOOM ANGLE POTENTIOMETER).............................431 ERROR CODE IN ELECTRICAL SYSTEM [E245](SHORT-CIRCUITING IN ATTACHMENT OIL FLOW RATE ADJUSTING EPC).....................433 ERROR CODE IN ELECTRICAL SYSTEM [E246](DISCONNECTION IN ATTACHMENT OIL FLOW RATE ADJUSTING EPC)........................434 ERROR CODE IN ELECTRICAL SYSTEM [E306](ABNORMALITY IN GOVERNOR POTENTIOMETER)..........................................435 ERROR CODE IN ELECTRICAL SYSTEM [E308](ABNORMALITY IN FUEL DIAL).......................................................437 ERROR CODE IN ELECTRICAL SYSTEM [E315](SHORT-CIRCUITING IN BATTERY RELAY)..............................................439 ERROR CODE IN ELECTRICAL SYSTEM [E316](STEP-OUT IN GOVERNOR MOTOR).....................................................441 ERROR CODE IN ELECTRICAL SYSTEM [E317](DISCONNECTION IN GOVERNOR MOTOR PHASE A AND B)..................................442 ERROR CODE IN ELECTRICAL SYSTEM [E318](SHORT-CIRCUITING IN GOVERNOR MOTOR PHASE A AND PHASE B).........................444 FAILURE CODE IN MECHANICAL SYSTEM [A000N1](OUT-OF-RATE ENGINE ROTATION AT HIGH IDLE)...................................446 FAILURE CODE IN MECHANICAL SYSTEM [A000N2](OUT-OF-RATE ENGINE ROTATION AT LOW IDLE)....................................446 FAILURE CODE IN MECHANICAL SYSTEM [AA10NX](AIR CLEANER CLOGGING........................................................447 FAILURE CODE IN MECHANICAL SYSTEM [AB00KE](ABNORMALLY LOWERED CHARGING VOLTAGE)........................................448 FAILURE CODE IN MECHANICAL SYSTEM [B@BAZG](ABNORMALLY LOWERED ENGINE OIL PRESSURE).....................................450 FAILURE CODE IN MECHANICAL SYSTEM [B@BAZK](ABNORMALLY LOWERED ENGINE OIL LEVEL)........................................451 FAILURE CODE IN MECHANICAL SYSTEM [B@BCNS](ENGINE COOLING WATER OVERHEATING)...........................................452 FAILURE CODE IN MECHANICAL SYSTEM [B@BCZK](ABNORMALLY LOWED RADIATOR WATER LEVEL)......................................453 FAILURE CODE IN MECHANICAL SYSTEM [B@HANS](HYDRAULIC OIL OVERHEATING)..................................................454 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE)..............................................................................455 BEFORE CARRYING OUT TROUBLESHOOTING OF E MODE..........................................................................456 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE.........................................................................457 E-1 ENGINE DOES NOT START(ENGINE DOES NOT ROTATE)......................................................................458 E-2 ENGINE STOPS WHILE IN OPERATION....................................................................................462 E-3 ENGINE SPEED IS IRREGULAR, OR THERE IS HUNTING.....................................................................463 E-4 ENGINE DOES NOT STOP...............................................................................................465 E-5 AUTO-DECELERATOR DOES NOT WORK.....................................................................................467 E-6 AUTO ENGINE WARM-UP DEVICE DOES NOT WORK...........................................................................468 E-7 PREHEATER DOES NOT OPERATE.........................................................................................469 E-8 ALL WORK EQUIPMENT,SWING AND TRAVEL DO NOT MOVE....................................................................471 E-9 ONE-TOUCH POWER MAX SWITCH DOES NOT WORK...........................................................................473 E-10 ATTACHMENT CIRCUIT DOES NOT CHANGE................................................................................474 E-11 NO DISPLAY IN MONITOR PANEL AT ALL................................................................................475 E-12 PART OF DISPLAY ON MONITOR PANEL IS MISSING.......................................................................476 E-13 MONITOR PANEL DISPLAYS CONTENTS IRRELEVANT TO THE MODEL...........................................................476 E-14 FUEL LEVEL MONITOR RED LAMP LIGHTS UP WHILE ENGINE IS RUNNING.....................................................477 E-15 ENGINE COOLING WATER TEMPERATURE GAUGE DOES NOT INDICATE CORRECTLY................................................478 E-16 HYDRAULIC OIL TEMPERATURE GAUGE DOES NOT DISPLAY CORRECTLY........................................................479 E-17 FUEL GAUGE DOES NOT DISPLAY CORRECTLY.............................................................................480 E-18 SWING LOCK MONITOR DOES NOT DISPLAY CORRECTLY.....................................................................481 E-19 WHEN MONITOR SWITCH IS OPERATED,NOTHING IS DISPLAYED..............................................................483 E-20 WINDSHIELD WIPER AND WINDOW WASHER DO NOT WORK....................................................................485 E-21 ALARMING BUZZER CANNOT BE CANCELLED...............................................................................489 E-22 "BOOM RAISE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION.......................................................490 E-23 "BOOM LOWER" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION.......................................................491 E-24 "ARM DIGGING " IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTIONS....................................................492 E-25 "ARM DUMPING " IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION.....................................................493 E-26 "BUCKET DIGGING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION...................................................494 E-27 "BUCKET DUMPING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION...................................................495 E-28 "SWING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION............................................................496 E-29 "TRAVEL" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION...........................................................498 E-30 "TRAVEL DIFFERENTIAL PRESSURE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION.....................................500 E-31 "SERVICE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION..........................................................502 E-32 AIR CONDITIONER DOES NOT WORK.....................................................................................504 E-33 TRAVEL ALARM DOES NOT SOUND OR DOES NOT STOP SOUNDING.............................................................506 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM(H-MODE).................................................................508 SYSTEM CHART FOR HYDRAULIC AND MECHANICAL SYSTEMS......................................................................509 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE.........................................................................511 H-1 ALL WORK EQUIPMENT LACK POWER, OR TRAVEL AND SWING SPEEDS ARE SLOW.................................................512 H-2 ENGINE SPEED SHARPLY DROPS OR ENGINE STALLS........................................................................513 H-3 NO WORK EQUIPMENT, TRAVEL OR SWING MOVE............................................................................514 H-4 ABNORMAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP.................................................................514 H-5 AUTO-DECELERATOR DOES NOT WORK.....................................................................................515 H-6 FINE CONTROL MODE DOES NOT FUNCTION................................................................................515 H-7 BOOM MOVES SLOWLY OR LACKS POWER...................................................................................516 H-8 ARM MOVES SLOWLY OR LACKS POWER....................................................................................517 H-9 BUCKET MOVES SLOWLY OR LACKS POWER.................................................................................518 H-10 WORK EQUIPMENT DOES NOT MOVE IN ITS SINGLE OPERATION..............................................................518 H-11 WORK EQUIPMENT HAS A BIT TOO FAST HYDRAULIC DRIFT.................................................................519 H-12 WORK EQUIPMENT HAS BIG TIME LAG...................................................................................520 H-13 OTHER WORK EQUIPMENT MOVES WHEN RELIEVING SINGLE CIRCUIT..........................................................520 H-14 ONE-TOUCH POWER MAX. SWITCH DOES NOT OPERATE......................................................................520 H-15 IN COMPOUND OPERATION, WORK EQUIPMENT WITH LARGER LOAD MOVES SLOWLY...............................................521 H-16 IN SWING + BOOM RAISE OPERATION, BOOM MOVES SLOWLY................................................................521 H-17 IN SWING + TRAVEL, TRAVEL SPEED DROPS SHARPLY.....................................................................521 H-18 MACHINE SWERVES IN TRAVEL.........................................................................................522 H-19 MACHINE TRAVELS SLOWLY............................................................................................523 H-20 MACHINE CANNOT BE EASILY STEERED OR LACKS POWER...................................................................524 H-21 TRAVEL SPEED DOES NOT SHIFT, OR IT IS SLOWER OR FASTER THAN PRESET SPEED..........................................525 H-22 TRACK SHOE DOES NOT TURN (ON ONE SIDE ONLY).......................................................................526 H-23 MACHINE DOES NOT SWING............................................................................................527 H-24 SWING ACCELERATION IS POOR, OR SWING SPEED IS SLOW................................................................528 H-25 EXCESSIVE OVERRUN WHEN STOPPING SWING.............................................................................529 H-26 THERE IS BIG SHOCK WHEN STOPPING SWING............................................................................530 H-27 THERE IS BIG ABNORMAL NOISE CAUSED WHEN STOPPING SWING............................................................530 H-28 SWING NATURAL DRIFT IS TOO BIG....................................................................................531 H-29 ATTACHMENT CIRCUIT DOES NOT CHANGE................................................................................532 H-30 FLOW RATE IN ATTACHMENT CIRCUIT CANNOT BE ADJUSTED................................................................532 TROUBLESHOOTING OF ENGINE (S-MODE).........................................................................................534 METHOD OF USING TROUBLESHOOTING CHARTS.................................................................................535 S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)..........................................................539 S-2 ENGINE DOES NOT START..............................................................................................541 (1) ENGINE DOES NOT TURN...........................................................................................541 (2) ENGINE TURNS BUT NO EXHAUST SMOKES COMES OUT (FUEL IS NOT BEING INJECTED)......................................542 (3) EXHAUST SMOKE COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED).....................................543 S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)...............................................................544 S-4 ENGINE STOPS DURING OPERATIONS.....................................................................................545 S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)..........................................................................546 S-6 ENGINE LACKS OUTPUT (OR LACKS POWER)...............................................................................547 S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION).....................................................................548 S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)............................................................549 S-9 OIL BECOMES CONTAMINATED QUICKLY...................................................................................550 S-10 FUEL CONSUMPTION IS EXCESSIVE.....................................................................................551 S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN...........................................552 S-12 OIL PRESSURE MONITOR LIGHTS UP (DROP IN OIL PRESSURE).............................................................553 S-13 OIL LEVEL RISES (WATER, FUEL IN OIL)..............................................................................554 S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)..................................................................555 S-15 ABNORMAL NOISE IS MADE............................................................................................556 S-16 VIBRATION IS EXCESSIVE............................................................................................557 30 DISASSEMBLY AND ASSEMBLY........................................................................................................558 HOW TO READ THIS MANUAL........................................................................................................559 PRECAUTIONS WHEN PERFORMING OPERATION..........................................................................................561 SPECIAL TOOL LIST..............................................................................................................563 REMOVAL AND INSTALLATION OF ENGINE ASSEMBLY....................................................................................569 REMOVAL AND INSTALLATION OF ENGINE FRONT SEAL..................................................................................572 REMOVAL AND INSTALLATION OF ENGINE REAR SEAL...................................................................................575 REMOVAL AND INSTALLATION OF RADIATOR ASSEMBLY..................................................................................577 REMOVAL AND INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY......................................................................578 REMOVAL AND INSTALLATION OF AFTERCOOLER........................................................................................580 REMOVAL AND INSTALLATION OF FUEL TANK ASSEMBLY.................................................................................581 REMOVAL AND INSTALLATION OF CENTER SWIVEL JOINT ASSEMBLY.......................................................................582 DISASSEMBLY AND ASSEMBLY OF CENTER SWIVEL JOINT................................................................................584 REMOVAL AND INSTALLATION OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY..............................................................586 DISASSEMBLY AND ASSEMBLY OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY..............................................................587 REMOVAL AND INSTALLATION OF SWING MOTOR AND SWING MACHINERY ASSEMBLY...........................................................595 DISASSEMBLY AND ASSEMBLY OF SWING MOTOR AND SWING MACHINERY ASSEMBLY...........................................................597 REMOVAL AND INSTALLATION OF REVOLVING FRAME....................................................................................613 REMOVAL AND INSTALLATION OF SWING CIRCLE ASSEMBLY..............................................................................615 DISASSEMBLY AND ASSEMBLY OF RECOIL SPRING......................................................................................616 DISASSEMBLY AND ASSEMBLY OF IDLER ASSEMBLY.....................................................................................618 DISASSEMBLY AND ASSEMBLY OF TRACK ROLLER ASSEMBLY..............................................................................621 EXPANSION AND INSTALLATION OF TRACK SHOE ASSEMBLY..............................................................................622 REMOVAL AND INSTALLATION OF HYDRAULIC TANK ASSEMBLY............................................................................624 REMOVAL AND INSTALLATION OF HYDRAULIC PUMP ASSEMBLY............................................................................626 REMOVAL AND INSTALLATION OF CONTROL VALVE ASSEMBLY.............................................................................628 DISASSEMBLY AND ASSEMBLY OF CONTROL VALVE ASSEMBLY.............................................................................630 DISASSEMBLY AND ASSEMBLY OF WORK EQUIPMENT PPC VALVE ASSEMBLY..................................................................632 DISASSEMBLY AND ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY..........................................................................634 DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY........................................................................636 REMOVAL AND INSTALLATION OF WORK EQUIPMENT ASSEMBLY............................................................................642 REMOVAL AND INSTALLATION OF OPERATOR'S CAB ASSEMBLY............................................................................644 REMOVAL AND INSTALLATION OF FLOOR FRAME ASSEMBLY...............................................................................646 REMOVAL AND INSTALLATION OF AIR CONDITIONER COMPRESSOR ASSEMBLY................................................................650 REMOVAL AND INSTALLATION OF AIR CONDITIONER CONDENSER ASSEMBLY.................................................................651 REMOVAL AND INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY......................................................................652 REMOVAL AND INSTALLATION OF MAINTENANCE COUNTERWEIGHT ASSEMBLY (AT REAR PART OF ENGINE)........................................654 REMOVAL AND INSTALLATION OF MAINTENANCE COUNTERWEIGHT ASSEMBLY(ABOVE PUMP).....................................................655 REMOVAL AND INSTALLATION OF COUNTERWEIGHT ASSEMBLY.............................................................................656 REMOVAL AND INSTALLATION OF MONITOR PANEL......................................................................................656 REMOVAL AND INSTALLATION OF OPERATOR'S CAB GLASS (STUCK GLASS).................................................................657 REMOVAL AND INSTALLATION OF FRONT WINDOW ASSEMBLY..............................................................................666 90 OTHERS..........................................................................................................................667 HYDRAULIC CIRCUIT DIAGRAM......................................................................................................668 ELECTRICAL CIRCUIT DIAGRAM(1/4)................................................................................................669 ELECTRICAL CIRCUIT DIAGRAM(2/4)................................................................................................670 ELECTRICAL CIRCUIT DIAGRAM(3/4)................................................................................................671 ELECTRICAL CIRCUIT DIAGRAM(4/4)................................................................................................672
DESCRIPTION:
KOMATSU PC228US-3 PC228USLC-3 SHOP MANUAL SEBM030506 – PDF DOWNLOAD
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. In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance standards.
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” with “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.
MAINTENANCE STANDARD
This section gives the judgment standards for inspection of disassembled parts. The contents of this section may be described in STRUCTURE AND FUNCTION.
OTHERS
This section mainly gives hydraulic circuit diagrams and electric circuit diagrams. In addition, this section may give the specifications of attachments and options together
S.S 26/12/24
