Trusted Business
Verified & Licensed
Virus Free Files
100% Safe Downloads
Secure Payment
SSL Protected
Instant Delivery
Available Immediately
KOMATSU PC400, 400LC-7 PC450,450LC-7 SHOP MANUAL SEBM033013 – PDF DOWNLOAD
$34.95
KOMATSU PC400, 400LC-7 PC450,450LC-7 SHOP MANUAL SEBM033013 – PDF DOWNLOAD
MACHINE MODEL SERIAL No.
PC400-7 50001 and up
PC400LC-7 50001 and up
PC450-7 20001 and up
PC450LC-7 20001 and up
Instant PDF Download
Available immediately
Save to Your Device
Download & keep forever
Antivirus Scanned
100% virus-free
Trusted Worldwide
175,000+ customers
Description
KOMATSU PC400, 400LC-7 PC450,450LC-7 SHOP MANUAL SEBM033013 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU PC400, 400LC-7 PC450,450LC-7 SHOP MANUAL SEBM033013 – PDF DOWNLOAD
Language : English
Pages : 926
Downloadable : Yes
File Type : PDF
MACHINE MODEL SERIAL No.
PC400-7 50001 and up
PC400LC-7 50001 and up
PC450-7 20001 and up
PC450LC-7 20001 and up
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU PC400, 400LC-7 PC450,450LC-7 SHOP MANUAL SEBM033013 – PDF DOWNLOAD
COVER............................................................................................................................... 1 CONTENTS............................................................................................................................ 2 LIST OF REVISED PAGES............................................................................................................... 3 FOREWORD............................................................................................................................ 9 SAFETY NOTICE................................................................................................................... 9 HOW TO READ THE SHOP MANUAL..................................................................................................... 14 EXPLANATION OF TERMS FOR MAINTENANCE STANDARD................................................................................... 16 HOW TO READ ELECTRIC WIRE CODE.................................................................................................. 18 PRECAUTIONS WHEN CARRYING OUT OPERATION......................................................................................... 21 METHOD OF DISASSEMBLING AND CONNECTING PUSH-PULL TYPE COUPLER................................................................... 24 STANDARD TIGHTENING TORQUE TABLE................................................................................................ 27 CONVERSION TABLE................................................................................................................ 31 01 GENERAL.......................................................................................................................... 37 SPECIFICATION DRAWINGS.......................................................................................................... 38 SPECIFICATIONS.................................................................................................................. 42 WEIGHT TABLE.................................................................................................................... 48 FUEL, COOLANT AND LUBRICANTS.................................................................................................... 52 10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD..................................................................................... 55 ENGINE RELATED PARTS............................................................................................................ 56 RADIATOR • OIL COOLER • AFTERCOOLER............................................................................................. 57 POWER TRAIN..................................................................................................................... 58 FINAL DRIVE..................................................................................................................... 60 SPROCKET........................................................................................................................ 62 SWING MACHINERY................................................................................................................. 64 SWING CIRCLE.................................................................................................................... 66 TRACK FRAME AND RECOIL SPRING................................................................................................... 68 IDLER........................................................................................................................... 70 CARRIER ROLLER.................................................................................................................. 72 TRACK ROLLER.................................................................................................................... 73 TRACK SHOE...................................................................................................................... 74 HYDRAULIC PIPING DRAWING........................................................................................................ 78 HYDRAULIC TANK.................................................................................................................. 80 HYDRAULIC PUMP.................................................................................................................. 82 LS(PC)-EPC VALVE................................................................................................................100 VARIABLE VOLUME VALVE...........................................................................................................103 CONTROL VALVE...................................................................................................................106 CLSS............................................................................................................................130 FUNCTIONS AND OPERATION BY VALVE................................................................................................134 ATTACHMENT CIRCUIT SELECTOR VALVE...............................................................................................176 HOLDING VALVE...................................................................................................................178 SWING MOTOR.....................................................................................................................184 CENTER SWIVEL JOINT.............................................................................................................192 TRAVEL MOTOR....................................................................................................................194 VALVE CONTROL...................................................................................................................207 TRAVEL PPC SHUTTLE VALVE........................................................................................................208 WORK EQUIPMENT • SWING PPC VALVE................................................................................................212 TRAVEL PPC VALVE................................................................................................................216 SERVICE PPC VALVE...............................................................................................................223 SOLENOID VALVE..................................................................................................................224 PPC ACCUMULATOR.................................................................................................................226 RETURN OIL FILTER...............................................................................................................227 HYDRAULIC CYLINDER..............................................................................................................248 WORK EQUIPMENT..................................................................................................................252 AIR CONDITIONER.................................................................................................................260 ENGINE CONTROL..................................................................................................................261 ELECTRONIC CONTROL SYSTEM.......................................................................................................267 MONITOR SYSTEM..................................................................................................................294 7-SEGMENT MONITOR SYSTEM........................................................................................................314 SENSOR..........................................................................................................................322 20 TESTING AND ADJUSTING............................................................................................................325 STANDARD VALUE TABLE FOR ENGINE.................................................................................................326 STANDARD VALUE TABLE FOR CHASSIS (BACKHOE SPECIFICATION)........................................................................327 STANDARD VALUE TABLE FOR CHASSIS (LOADING SHOVEL SPECIFICATION).................................................................336 TESTING AND ADJUSTING...........................................................................................................345 TESTING, ADJUSTING, AND TROUBLESHOOTING TOOLS TABLE.........................................................................346 MEASURING ENGINE SPEED......................................................................................................348 MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE)..............................................................................349 MEASURING EXHAUST TEMPERATURE...............................................................................................350 MEASURING EXHAUST GAS COLOR.................................................................................................351 ADJUSTING VALVE CLEARANCE...................................................................................................352 MEASURING COMPRESSION PRESSURE..............................................................................................354 MEASURING BLOW-BY PRESSURE..................................................................................................356 MEASURING ENGINE OIL PRESSURE...............................................................................................357 HANDLING OF FUEL SYSTEM DEVICES.............................................................................................358 RELEASING RESIDUAL PRESSURE FROM FUEL SYSTEM................................................................................358 MEASURING FUEL PRESSURE.....................................................................................................359 BLEEDING AIR FROM FUEL CIRCUIT..............................................................................................360 INSPECTION OF FUEL CIRCUIT FOR LEAKAGE......................................................................................362 ADJUSTING ENGINE SPEED SENSOR...............................................................................................363 TESTING AND ADJUSTING FAN BELT AND ALTERNATOR BELT TENSION..................................................................364 TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION...............................................................365 MEASURING CLEARANCE OF SWING CIRCLE BEARING.................................................................................366 TESTING AND ADJUSTING TRACK SHOE TENSION....................................................................................367 TESTING AND ADJUSTING OIL PRESSURE IN WORK EQUIPMENT, SWING, AND TRAVEL CIRCUITS............................................368 MEASURING BASIC PRESSURE IN CONTROL CIRCUIT.................................................................................372 TESTING AND ADJUSTING OIL PRESSURE IN PUMP PC CONTROL CIRCUIT...............................................................373 TESTING AND ADJUSTING OIL PRESSURE IN PUMP LS CONTROL CIRCUIT...............................................................376 MEASURING SOLENOID VALVE OUTPUT PRESSURE....................................................................................381 MEASURING PPC VALVE OUTPUT PRESSURE.........................................................................................384 ADJUSTING PLAY OF WORK EQUIPMENT AND SWING PPC VALVES.......................................................................386 TESTING PARTS WHICH CAUSE HYDRAULIC DRIFT OF WORK EQUIPMENT.................................................................387 RELEASING RESIDUAL PRESSURE IN HYDRAULIC CIRCUIT............................................................................389 MEASURING OIL LEAKAGE.......................................................................................................390 BLEEDING AIR FROM EACH PART.................................................................................................393 TESTING PROCEDURE OF DIODE..................................................................................................396 SPECIAL FUNCTIONS OF MONITOR PANEL..........................................................................................397 SPECIAL FUNCTIONS OF 7-SEGMENTS MONITOR PANEL...............................................................................425 HANDLING OF HIGH-VOLTAGE CIRCUIT OF ENGINE CONTROLLER.......................................................................444 PREPARATION WORK FOR TROUBLESHOOTING FOR ELECTRICAL EQUIPMENT SYSTEM........................................................445 PM-CLINIC SERVICE...........................................................................................................447 TROUBLESHOOTING.................................................................................................................455 POINTS TO REMEMBER WHEN TROUBLESHOOTING.....................................................................................456 SEQUENCE OF EVENTS IN TROUBLESHOOTING.......................................................................................457 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE............................................................................458 CHECKS BEFORE TROUBLESHOOTING...............................................................................................466 CLASSIFICATION AND STEPS FOR TROUBLESHOOTING................................................................................467 CONNECTOR ARRANGEMENT DRAWING AND ELECTRIC CIRCUIT DIAGRAM OF EACH SYSTEM...................................................471 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS..................................................................................488 T- BRANCH BOX AND T- BRANCH ADAPTER TABLE...................................................................................524 CONNECTION TABLE OF FUSE BOX................................................................................................527 TROUBLESHOOTING WHEN ERROR CODE “ELECTRICAL SYSTEM” AND FAILURE CODE “MECHANICAL SYSTEM” ARE DISPLAYED......................529 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE..........................................................................532 Error Code in Electrical System [E112] (Short-circuiting in normal rotation system of windshield wiper motor drive).....534 Error Code in Electrical System [E113] (Short-circuiting in reverse rotation system of windshield wiper motor drive)....536 Error Code in Electrical System [E114] (Short-circuiting in window washer drive system).................................538 Error Code in Electrical System [E115] (Abnormal Windshield Wiper Motion)...............................................540 Error Code in Electrical System [E116] (Abnormality in retracting windshield wiper).....................................542 Error Code in Electrical System [E117] (Eng. Controller S-NET Comm. Err.)...............................................544 Error Code in Electrical System [E118] (Pump Controller S-NET Comm. Err.)...............................................546 Error Code in Electrical System [E128] (Monitor Comm. Abnormality)......................................................548 Error Code in Electrical System [E201] (Short-circuiting in travel interlocking solenoid)...............................550 Error Code in Electrical System [E203] (Short-circuiting in swing holding brake solenoid)...............................552 Error Code in Electrical System [E204] (Short-circuiting in merge/divide solenoid)......................................554 Error Code in Electrical System [E205] (Short-circuiting in 2-stage relief solenoid)....................................555 Error Code in Electrical System [E206] (Short-circuiting in travel speed shifting solenoid).............................556 Error Code in Electrical System [E211] (Disconnection in travel interlocking solenoid)..................................557 Error Code in Electrical System [E213] (Disconnection in swing holding brake solenoid)..................................558 Error Code in Electrical System [E214] (Disconnection of merge/divide solenoid).........................................560 Error Code in Electrical System [E215] (Disconnection in 2-stage relief solenoid).......................................561 Error Code in Electrical System [E216] (Disconnection in travel speed shifting solenoid)................................562 Error Code in Electrical System [E217] (Abnormal input model code)......................................................564 Error Code in Electrical System [E218] (S-Net Comm. Disc.)..............................................................566 Error Code in Electrical System [E222] (Short-circuiting in LS-EPC solenoid)............................................568 Error Code in Electrical System [E223] (Disconnection in LS-EPC solenoid system)........................................569 Error Code in Electrical System [E224] (F Pump P. Sensor Abnormality)...................................................570 Error Code in Electrical System [E225] (R Pump P. Sensor Abnormality)...................................................572 Error Code in Electrical System [E226] (Press. Sensor Power Abnormality)................................................574 Error Code in Electrical System [E227] (Abnormality in engine rotation sensor)..........................................576 Error Code in Electrical System [E228] (Short-circuiting in attachment return switching relay)..........................577 Error Code in Electrical System [E232] (Short-circuiting in PC-EPC Solenoid)............................................578 Error Code in Electrical System [E233] (Disconnection in PC-EPC solenoid system)........................................580 Error Code in Electrical System [E238] (Disconnection in attachment return switching relay).............................582 Error Code in Electrical System [E245] (Short-circuiting in attachment oil flow rate adjusting EPC).....................584 Error Code in Electrical System [E246] (Disconnection in attachment oil flow rate adjusting EPC)........................585 Error Code in Electrical System [E247] (Arm IN PPC pressure sensor abnormality).........................................586 Error Code in Electrical System [E248] (Bucket CURL PPC pressure sensor abnormality)....................................588 Error Code in Electrical System [E257] (Pump Abnormality)...............................................................590 Error Code in Electrical System [E315] (Battery Relay Drive S/C)........................................................592 Error Code in Electrical System [E91B] (Engine Ne sensor problem).......................................................594 Error Code in Electrical System [E91C] (Engine G sensor problem)........................................................595 Error Code in Electrical System [E920] (Engine type selection error)....................................................596 Error Code in Electrical System [E921] (Engine type mismatch)...........................................................598 Error Code in Electrical System [E931] (Fuel dial sys. error)...........................................................600 Error Code in Electrical System [E934] (Engine coolant sensor Hi error).................................................602 Error Code in Electrical System [E936] (Engine oil press. sw. error)....................................................604 Error Code in Electrical System [E93C] (Engine boost sensor error)......................................................606 Error Code in Electrical System [E93D] (Engine fuel temp. sensor error).................................................608 Error Code in Electrical System [E953] (Engine Comm. Abnormality).......................................................610 Error Code in Electrical System [E954] (Short engine starter sw.).......................................................612 Error Code in Electrical System [E955] (Engine S-NET error).............................................................614 Error Code in Electrical System [E956] (Engine power failure (1)).......................................................616 Error Code in Electrical System [E957] (Engine power failure (2)).......................................................618 Error Code in Electrical System [E95A] (Engine Q-adj. sw. signal error).................................................620 Error Code in Electrical System [E96A] (Engine coolant sensor Lo error).................................................622 Error Code in Electrical System [E970] (PCV1 over current)..............................................................624 Error Code in Electrical System [E971] (PCV2 over current)..............................................................625 Error Code in Electrical System [E974] (PCV1 line cut)..................................................................626 Error Code in Electrical System [E975] (PCV2 line cut)..................................................................627 Error Code in Electrical System [E977] (Rail press. sensor error).......................................................628 Error Code in Electrical System [E979] (Rail press. high)...............................................................630 Error Code in Electrical System [E97A] (Rail press. abnormal)...........................................................630 Error Code in Electrical System [E97B] (Rail press. low)................................................................631 Error Code in Electrical System [E97C] (Rail press. too low)............................................................633 Error Code in Electrical System [E97D] (Rail press. out of control).....................................................633 Error Code in Electrical System [E980] (Eng. Controller Abnormality)....................................................634 Error Code in Electrical System [E981] (Fuel Injector 1 Disc.)..........................................................636 Error Code in Electrical System [E982] (Fuel Injector 2 Disc.)..........................................................637 Error Code in Electrical System [E983] (Fuel Injector 3 Disc.)..........................................................638 Error Code in Electrical System [E984] (Fuel Injector 4 Disc.)..........................................................639 Error Code in Electrical System [E985] (Fuel Injector 5 Disc.)..........................................................640 Error Code in Electrical System [E986] (Fuel Injector 6 Disc.)..........................................................641 Error Code in Electrical System [E98A] (Fuel Injector 1 – 3 S/C)........................................................642 Error Code in Electrical System [E98B] (Fuel Injector 4 – 6 S/C)........................................................644 Error Code in Mechanical System [A000N1] (Engine high-idling speed out of standard).....................................646 Error Code in Mechanical System [A000N2] (Engine low-idling speed out of standard)......................................646 Failure Code in Mechanical System [AA10NX] (Aircleaner Clogging)........................................................648 Failure Code in Mechanical System [AB00KE] (Charge Voltage Low).........................................................650 Failure Code in Mechanical System [B@BAZG] (Eng. Oil Press. Low)........................................................652 Failure Code in Mechanical System [B@BAZK] (Eng. Oil Level Low).........................................................654 Failure Code in Mechanical System [B@BCNS] (Eng. Water Overheat)........................................................655 Failure Code in Mechanical System [B@BCZK] (Eng. Water Lvl Low).........................................................656 Failure Code in Mechanical System [B@HANS] (Hydr. Oil Overheat).........................................................657 TROUBLESHOOTING OFELECTRICAL SYSTEM (E MODE)................................................................................659 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE..........................................................................661 E-1 The engine does not start (The engine does not rotate)..............................................................662 E-2 Preheater does not operate..........................................................................................666 E-3 Auto engine warm-up device does not work............................................................................668 E-4 Auto-decelerator does not operate...................................................................................669 E-5 All work equipment, swing and travel do not move....................................................................670 E-6 One-touch power max. function does not operate......................................................................672 E-7 Machine push-up function does not operate normally..................................................................673 E-8 Attachment circuit does not change..................................................................................675 E-9 No display in monitor panel at all..................................................................................677 E-10 Part of display on monitor panel is missing........................................................................678 E-11 Monitor panel displays contents irrelevant to the model............................................................678 E-12 Fuel level monitor red lamp lights up while engine is running......................................................679 E-13 Engine water temperature gauge does not display correctly..........................................................680 E-14 Hydraulic oil temperature gauge does not display correctly.........................................................682 E-15 Fuel gauge does not display correctly..............................................................................683 E-16 Swing lock monitor does not display correctly......................................................................684 E-17 When monitor switch is operated, nothing is displayed..............................................................686 E-18 Windshield wiper and window washer do not work.....................................................................688 E-19 Alarm buzzer cannot be cancelled...................................................................................692 E-20 “Boom RAISE” is not correctly displayed in monitor function........................................................693 E-21 “Boom LOWER” is not correctly displayed in monitor function........................................................694 E-22 “Arm IN” is not displayed normally in monitoring function..........................................................695 E-23 “Arm DUMPING” is not correctly displayed in monitor function.......................................................696 E-24 “Bucket CURL” is not displayed normally in monitoring function.....................................................697 E-25 “Bucket DUMPING” is not correctly displayed in monitor function....................................................698 E-26 “Swing” is not displayed normally in monitoring function...........................................................700 E-27 “TRAVEL” is not correctly displayed in monitor function............................................................702 E-28 “Travel Differential Pressure” is not correctly displayed in monitor function......................................704 E-29 “Service” is not correctly displayed in monitor function...........................................................706 E-30 Travel alarm does not sound or does not stop sounding..............................................................708 E-32 TROUBLESHOOTING FOR AIR CONDITIONER SYSTEM.........................................................................710 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE).................................................................721 SYSTEM CHART FOR HYDRAULIC AND MECHANICAL SYSTEM........................................................................722 H-1 All work equipment lack power, or travel and swing speeds are slow..................................................725 H-2 Engine speed sharply drops or engine stalls.........................................................................726 H-3 No work equipment, travel or swing move.............................................................................727 H-4 Abnormal noise is heard from around hydraulic pump..................................................................727 H-5 Auto-decelerator does not work......................................................................................728 H-6 Fine control mode does not function.................................................................................728 H-7 Boom moves slowly or lacks power....................................................................................729 H-8 Arm moves slowly or lacks power.....................................................................................730 H-9 Bucket moves slowly or lacks power..................................................................................731 H-10 Work equipment does not move in its single operation...............................................................731 H-11 Work equipment has a bit too fast hydraulic drift..................................................................732 H-12 Work equipment has big time lag....................................................................................733 H-13 Other work equipment moves when relieving single circuit...........................................................733 H-14 One-touch power max. function does not work........................................................................733 H-15 Machine push-up function does not work.............................................................................734 H-16 In compound operation, work equipment with larger load moves slowly................................................735 H-17 In swing + boom RAISE operation, boom moves slowly.................................................................735 H-18 In swing + travel, travel speed drops sharply......................................................................735 H-19 Machine swerves in travel..........................................................................................736 H-20 Machine travels slowly.............................................................................................737 H-21 Machine cannot be easily steered or lacks power....................................................................738 H-22 Travel speed does not shift, or it is slower or faster than preset speed...........................................739 H-23 Track shoe does not turn (on one side only)........................................................................740 H-24 Machine does not swing.............................................................................................741 H-25 Swing acceleration is poor, or swing speed is slow.................................................................742 H-26 Excessive overrun when stopping swing..............................................................................743 H-27 There is big shock when stopping swing.............................................................................744 H-28 There is big abnormal noise caused when stopping swing.............................................................744 H-29 Swing natural drift is too big.....................................................................................745 H-30 Attachment circuit does not change.................................................................................746 H-31 Flow rate in attachment circuit cannot be adjusted.................................................................746 TROUBLESHOOTING OF ENGINE (S MODE)..........................................................................................747 POINTS TO REMEMBER WHEN TROUBLESHOOTING.................................................................................748 METHOD OF USING TROUBLESHOOTING CHARTS..................................................................................749 S-1 Starting performance is poor (starting always takes time)...........................................................752 S-2 Engine does not start...............................................................................................753 S-3 Engine does not pick up smoothly (follow-up is poor)................................................................756 S-4 Engine stops during operations......................................................................................757 S-5 Engine does not rotate smoothly (hunting)...........................................................................758 S-6 Engine lacks output (or lacks power)................................................................................759 S-7 Exhaust smoke is black (incomplete combustion)......................................................................760 S-8 Oil consumption is excessive (or exhaust smoke is blue).............................................................761 S-9 Oil becomes contaminated quickly....................................................................................762 S-10 Fuel consumption is excessive......................................................................................763 S-11 Oil is in cooling water (or water spurts back, or water level goes down)...........................................764 S-12 Oil pressure caution lamp lights up (drop in oil pressure).........................................................765 S-13 Oil level rises (water, fuel in oil)...............................................................................766 S-14 Water temperature becomes too high (overheating)...................................................................767 S-15 Abnormal noise is made.............................................................................................768 S-16 Vibration is excessive.............................................................................................769 30 DISASSEMBLY AND ASSEMBLY.........................................................................................................771 HOW TO READ THIS MANUAL.........................................................................................................772 COATING MATERIALS LIST..........................................................................................................774 SPECIAL TOOL LIST...............................................................................................................778 REMOVAL AND INSTALLATION OF CYLINDER HEAD ASSEMBLY..............................................................................789 REMOVAL AND INSTALLATION OF ENGINE REAR SEAL....................................................................................796 REMOVAL AND INSTALLATION OF ENGINE FRONT SEAL...................................................................................800 REMOVAL AND INSTALLATION OF FUEL SUPPLY PUMP ASSEMBLY...........................................................................803 REMOVAL AND INSTALLATION OF FUEL INJECTOR ASSEMBLY..............................................................................806 REMOVAL AND INSTALLATION OF NOZZLE TIP..........................................................................................809 REMOVAL AND INSTALLATION OF STARTING MOTOR ASSEMBLY.............................................................................811 REMOVAL AND INSTALLATION OF RADIATOR ASSEMBLY...................................................................................812 REMOVAL AND INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY.......................................................................814 REMOVAL AND INSTALLATION OF ENGINE AND HYDRAULIC PUMP ASSEMBLY..................................................................816 REMOVAL AND INSTALLATION OF SWING CIRCLE ASSEMBLY...............................................................................821 REMOVAL AND INSTALLATION OF SWING MOTOR AND SWING MACHINERY ASSEMBLY............................................................822 DISASSEMBLY AND ASSEMBLY OF SWING MOTOR AND SWING MACHINERY ASSEMBLY............................................................823 REMOVAL AND INSTALLATION OF SPROCKET............................................................................................830 REMOVAL AND INSTALLATION OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY...............................................................831 DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE ASSEMBLY................................................................................832 DISASSEMBLY AND ASSEMBLY OF CARRIER ROLLER ASSEMBLY.............................................................................839 DISASSEMBLY AND ASSEMBLY OF TRACK ROLLER ASSEMBLY...............................................................................841 DISASSEMBLY AND ASSEMBLY OF IDLER ASSEMBLY......................................................................................842 DISASSEMBLY AND ASSEMBLY OF RECOIL SPRING ASSEMBLY..............................................................................845 EXPANSION AND INSTALLATION OF TRACK SHOE ASSEMBLY...............................................................................847 REMOVAL AND INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY.......................................................................849 REMOVAL AND INSTALLATION OF OPERATOR’S CAB......................................................................................851 REMOVAL AND INSTALLATION OF MONITOR ASSEMBLY....................................................................................854 REMOVAL AND INSTALLATION OF PUMP CONTROLLER.....................................................................................855 REMOVAL AND INSTALLATION OF ENGINE CONTROLLER...................................................................................856 REMOVAL AND INSTALLATION OF REVOLVING FRAME ASSEMBLY............................................................................857 REMOVAL AND INSTALLATION OF COUNTERWEIGHT ASSEMBLY..............................................................................860 REMOVAL AND INSTALLATION OF HYDRAULIC TANK ASSEMBLY.............................................................................861 REMOVAL AND INSTALLATION OF HYDRAULIC PUMP ASSEMBLY.............................................................................863 REMOVAL AND INSTALLATION OF OIL SEAL IN HYDRAULIC PUMP INPUT SHAFT..............................................................866 REMOVAL AND INSTALLATION OF CONTROL VALVE ASSEMBLY..............................................................................867 DISASSEMBLY AND ASSEMBLY OF CONTROL VALVE ASSEMBLY..............................................................................870 REMOVAL AND INSTALLATION OF CENTER SWIVEL JOINT ASSEMBLY........................................................................874 DISASSEMBLY AND ASSEMBLY OF OF CENTER SWIVEL JOINT ASSEMBLY.....................................................................876 DISASSEMBLY AND ASSEMBLY OF WORK EQUIPMENT PPC VALVE ASSEMBLY...................................................................877 DISASSEMBLY AND ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY...........................................................................879 DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY.........................................................................881 REMOVAL AND INSTALLATION OF WORK EQUIPMENT ASSEMBLY.............................................................................886 REMOVAL AND INSTALLATION OF OPERATOR’S CAB GLASS (STUCK GLASS)..................................................................889 REMOVAL AND INSTALLATION OF FRONT WINDOW ASSEMBLY...............................................................................899 90 OTHERS...........................................................................................................................905 HYDRAULIC CIRCUIT DIAGRAM (1/2).................................................................................................907 HYDRAULIC CIRCUIT DIAGRAM (2/2).................................................................................................909 ELECTRICAL CIRCUIT DIAGRAM (1/6)................................................................................................911 ELECTRICAL CIRCUIT DIAGRAM (2/6)................................................................................................913 ELECTRICAL CIRCUIT DIAGRAM (3/6)................................................................................................915 ELECTRICAL CIRCUIT DIAGRAM (4/6)................................................................................................917 ELECTRICAL CIRCUIT DIAGRAM (5/6)................................................................................................919 ELECTRICAL CIRCUIT DIAGRAM (6/6)................................................................................................921 AIR CONDITIONER ELECTRICAL CIRCUIT..............................................................................................923 CONNECTORS TABLE AND ARRANGEMENT DRAWING (A1 SIZE)..............................................................................925
DESCRIPTION:
KOMATSU PC400, 400LC-7 PC450,450LC-7 SHOP MANUAL SEBM033013 – PDF DOWNLOAD
Composition of shop manual
This shop manual contains the necessary technical information for services performed in a workshop. For ease of understanding, the manual is divided into the following sections.
00. FOREWORD
This section explains the safety and basic information.
01. GENERAL
This section explains the specifications of the machine.
10. STRUCTURE AND FUNCTION, MAINTENANCE STANDARD
This section explains the structure, function, and maintenance standard values of each component. The structure and function sub-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. The maintenance standard sub-section explains the criteria and remedies for disassembly and service.
20. TESTING AND ADJUSTING
Standard value table
This section explains the standard values for new machine and judgement criteria for testing, adjusting,
and troubleshooting. This standard value table is used to check the standard values in testing and
adjusting and to judge parts in troubleshooting.
Testing and adjusting
This section explains measuring instruments and measuring methods for testing and adjusting, and method of adjusting each part. The standard values and judgement criteria for testing and adjusting are explained in Testing and adjusting. Troubleshooting
This section explains how to find out failed parts and how to repair them. The troubleshooting is divided by failure modes. The “S mode” of the troubleshooting related to the engine may be also explained in the Chassis volume and Engine volume. In this case, see the Chassis volume.
30. DISASSEMBLY AND ASSEMBLY
This section explains the special tools and procedures for removing, installing, disassembling, and assembling each component, as well as precautions for them. In addition, tightening torque and quantity and weight of coating material, oil, grease, and coolant necessary for the work are also explained.
90. OTHERS (chassis volume)/Repair and replacement of parts (engine volume)
• Chassis volume
This section gives hydraulic circuit diagrams and electrical circuit diagrams.
• Engine volume
This section explains the method of reproducing, repairing, and replacing parts
S.S 28/12/24
