This Complete Service Repair Workshop Manual PDF Download for the Komatsu PC128UU-1 (SN: 2347 and up), PC128US-1 (SN: 1715 and up) Hydraulic Excavator has easy to read text sections with top quality diagrams, pictures and illustrations. The step by step instructions show you how to fault find or complete any repair or overhaul, correctly and efficiently, saving time and avoiding costly mistakes. All specifications and tolerances are listed. Functions of components and systems are also explained.
APPLICABLE MODELS :
Komatsu PC128UU-1 Excavator
Serial Numbers : 2347 and up
Komatsu PC128US-1 Excavator
Serial Numbers : 1715 and up
TABLE OF CONTENTS :
01 GENERAL
10 STRUCTURE AND FUNCTION
20 TESTING AND ADJUSTING
30 DISASSEMBLY AND ASSEMBLY
40 MAINTENANCE STANDARD
90 OTHERS
MANUAL SPECIFICATION :
File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : SEBM009805
Total Pages : 794
This 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 is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!
This manual PDF download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having PDF files instead of a hard-printed manual is that you can use the Search feature in Acrobat to find just what your looking for and just print out the exact pages you need or all manual.
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COVER
CONTENTS
01 GENERAL
-GENERAL ASSEMBLY DRAWING
-SPECIFICATIONS
-WEIGHT TABLE
-LIST OF LUBRICANTS AND WATER
10 STRUCTURE AND FUNCTION
-RADIATOR AND OIL COOLER
-PTO (COUPLING)
-ENGINE CONTROL
-POWER TRAIN SYSTEM
-SWING CIRCLE
-SWING MACHINERY
-TRACK FRAME
-IDLER CUSHION
-TRACK SHOE
-HYDRAULIC PIPING DRAWING
-HYDRAULIC CIRCUIT DIAGRAM
-HYDRAULIC TANK
-HYDRAULIC PUMP
-CONTROL VALVE
-CLSS
-SWING MOTOR
-TRAVEL MOTOR
-CENTER SWIVEL JOINT
-VALVE CONTROL
-PPC VALVE
-PPC SHUTTLE AND TRAVEL JUNCTION VALVE
-EPC SOLENOID VALVE
-BOOM HOLDING VALVE
-WORK EQUIPMENT
-AIR CONDITIONER
-ACTUAL ELECTRICAL WIRING DIAGRAM
-ELECTRONIC CIRCUIT DIAGRAM
-ELECTRONIC CONTROL SYSTEM
-MACHINE MONITORING SYSTEM
20 TESTING AND ADJUSTING
-STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
-STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
-STANDARD VALUE TABLE FOR ELECTRICAL RELATED PARTS (EXCEPT AUTOMATIC HORIZONTAL DIGGING MACHINE)
-STANDARD VALUE TABLE FOR ELECTRICAL RELATED PARTS
-TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING
-MEASURING ENGINE SPEED
-MEASURING EXHAUST COLOR
-ADJUSTMENT VALVE CLEARANCE
-MEASUREMENT BLOW-BY PRESSURE
-MEASUREMENT ENGINE OIL PRESSURE
-TESTING AND ADJUSTMENT OF FUEL INJECTION TIMING
-TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION
-ADJUSTING ENGINE SPEED SENSOR
-ADJUSTING FUEL CONTROL CABLE
-ADJUSTING FUEL CONTROL CABLE
-ADJUSTING ENGINE STOP SOLENOID LINKAGE
-TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING, TRAVEL CIRCUIT
-TESTING AND ADJUSTING OUTPUT PRESSURE OF PC VALVE (SERVO PISTON INPUT PRESSURE)
-TESTING AND ADJUSTING LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) AND LS DIFFERENTIAL PRESSURE
-TESTING AND ADJUSTING CONTROL PUNP CIRCUIT OIL PRESSURE
-TESTING SOLENOID VALVE OUTPUT PRESSURE
-MEASURING PPC VALVE OUTPUT PRESSURE AND TESTING PPC SHUTTLE VALVE
-ADJUSTING WORK EQUIPMENT, SEING PPC VALVE
-TESTING AND ADJUSTING TRAVEL DEVIATION
-CHECKING LOCATION OF CAUSE OF HYDRAULIC DRIFT OF WORK EQUIPMENT
-MEASUREMENT OIL LEAKAGE OF SWING, TRAVEL MOTOR
-RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
-TESTING CLEARANCE OF SWING CIRCLE BEARING
-TESTING AND ADJUSTING TRACK SHOE TENSION
-BLEEDING AIR
-PROCEDURE FOR RESETTING ELECTRICAL SYSTEM AND CHECKING OPERATION
-PROCEDURE FOR REPLACING POTENTIOMETER
-PREOCEDURE FOR CHECKING DIODE
-TROUBLESHOOTING
--POINTS TO REMEMBER WHEN TROUBLESHOOTING
--SEQUENCE OF EVENTS IN TROUBLESHOOTING
--POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
--CHECKS BEFORE TROUBLESHOOTING
--CONNECTOR TYPES AND MOUNTING LOCATIONS
--CONNECTOR ARRANGEMENT DIAGRAM
--CONNECTOR TYPES AND MOUNTING LOCATIONS
--CONNECTOR ARRANGEMENT DIAGRAM
--CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
--EXPLANATIONS OF CONTROL MECHANISM OF ELECTRICAL SYSTEM
--DISPLAY METHOD FOR MOMITOR PANEL, CONTROLLER
--METHOD OF USING JUDGEMENT TABLE
--METHOD OF USING TROUBLESHOOTING CHARTS
--TROUBLESHOOTING OF CONTROLLER ELECTRICAL SYSTEM (E MODE)
---ACTION TAKEN BY SELF-DIAGNOSTIC FUNCTION AND PROBLEMS ON MACHINE
---JUDGEMENT TABLE FOR 4 SYSTEM
---JUDGEMENT TABLE FOR CHASSIS RELATED PARTS
---ELECTRICAL CIRCUIT DIAGRAM FOR CONTROLLER SYSTEM
---POINTS TO REMEMBER WHEN CARRYING OUT TROUBLESHOOTING OF CONTROLLER SYSTEM
---PRECAUTIONS WHEN HANDLING CANCEL SWITCH WHEN ABNORMALITY DISPLAY IS GIVEN AND WORK EQUIPMENT STOPS
---E-1 ERROR CODE [EE] (ABNORMALITY IN CONTROLLER POWER SOURCE SYSTEM OR COMMUNICATIONS SYSTEM) IS DISPLAYED
----a) ABNORMALITY IN CONTROLLER POWER SOURCE SYSTEM
----b) ABNORMALITY IN COMMUNICATIONS SYSTEM
---E-2 ERROR CODE [31](ABNORMALITY IN BOOM POTENTIOMETER SYSTEM) IS DISPLAYED
---E-3 ERROR CODE [32](ABNORMALITY IN ARM POTENTIOMETER SYSTEM) IS DISPLAYED
---E-4 ERROR CODE [34](ABNORMALITY IN OFFSET POTENTIOMETER SYSTEM) IS DISPLAYED
---E-5 ERROR CODE [41](ABNORMALITY IN ROTATION SENSOR SYSTEM)IS DISPLAYED
---E-6 ERROR CODE [51](ABNORMALITY IN PPC HYDRAULIC LOCK SOLENOID SYSTEM) IS DISPLAYED
---E-7 ERROR CODE [52](ABNORMALITY IN LEFT OFFSET STOP SOLENOID SYSTEM) IS DISPLAYED
---E-8 ERROR CODE [54](ABNORMALITY IN SWING HOLDING BRAKE SOLENOID SYSTEM) IS DISPLAYED
---E-9 ERROR CODE [61](ABNORMALITY IN LS-EPC SOLENOID SYSTEM) IS DISPLAYED
---E-10 ERROR CODE [62](ABNORMALITY IN LS BYPASS SOLENOID SYSTEM) IS DISPLAYED
---E-11 ERROR CODE [71](ABNORMALITY IN BOOM RAISE STOP SOLENOID SYSTEM) IS DISPLAYED
---E-12 ERROR CODE [72](ABNORMALITY IN BOOM LOWER STOP SOLENOID SYSTEM) IS DISPLAYED
---E-13 ERROR CODE [74](ABNORMALITY IN PC-EPC SOLENOID SYSTEM) IS DISPLAYED
---E-14 ERROR CODE [78](ABNORMALITY IN SWING RIGHT BRAKE SOLENOID SYSTEM) IS DISPLAYED
---E-15 ERROR CDOE [81](ABNORMALITY IN ARM IN STOP EPC SOLENOID SYSTEM) IS DISPLAYED
---E-16 ERROR CODE [C1](BOOM LOWER, BOOM RAISE PRESSURE SWITCHES INPUT AT SAME TIME FOR MORE THAN 3 SECONDS) IS DISPLAYED
---E-17 ABNORMALITY IN PC-EPC SOLENOID SYSTEM (POWER MODE DOES NOT SWITCH)
----a) DOES NOT SWITCH TO POWER MODE
----b) DOES NOT SWITCH TO ECONOMY MODE (STALLS IN LOW SPEED RANGE)
---E-18 ABNORMALITY IN TRAVEL SPEED BOOST SOLENOID SYSTEM (SPEED DOES NOT INCRESE OR DOES NOT DECREASE
----a)SPEED DOES NOT INCREASE (STAYS AT LOW SPEED)
----b)SPEED DOES NOT DECREASE (STAYS AT HIGH SPEED)
---E-19 WORK EQUIPMENT DOES NOT WORK EVEN WHEN WORK EQUIPMENT LOCK LEVER IS RELESSED
---E-20 WORK EQUIPMENT LOCK LEVER IS AT LOCK POSITION BUT WORK EQUIPMENT MOVES
---E-21 DEPTH MODE, HEIGHT MODE, OFFSET MODE DO NOT WORK PROPERLY (GO BEYOND SET POSITION BEFORE STOPPING OR STOP BEFORE RESCHING SET POSITION)
---E-22 IMPOSSIBLE TO SELECT AND SET DEPTH DISPLAY 0 SET MODE, DEPTH MODE,HEIGHT MODE, OFFSET MODE
---E-23 CANCEL SWITCH IS NOT TURNED ON, BUT ALARM BUZZER SOUNDS FOR 7 SECONDS AND ELECTRICAL SYSTEM CAUTION LAMP FLASHES
---E-24 AUTOMATIC STOP IS NOT CARRIED OUT FOR BOOM RAISE, ARM IN, LEFT OFFSET (WHEN ERROR CODE [91] IS NOT DISPLAYED)
---E-25 SWING DOES NOT WORK (WHEN NO ERROR DISPLAY IS GIVEN)
---E-26 EXCESSIVE HYDRAULIC DRIFT OF SWING
---E-27 OFFSET DOES NOT WORK (PARTICULARLY LEFT OFFSET)
---E-28 ENGINE DOES NOT START
----a) STARTING MOTOR DOES NOT TURN
----b) ENGINE STOP SOLENOID DOES NOT WORK
---E-29 ENGINE DOES NOT STOP
---E-30 WIPER DOES NOT WORK
---E-31 ERROR CODE [64](ABNORMALITY IN 2-STAGE RELIEF SOLENOID SYSTEM) IS DISPLAYED
---E-32 ERROR CODE [68](SHORT CIRCUIT WITH GROUND IN SWIFT SLOW-DOWN CONTROL SIGNAL SYSTEM) IS DISPLAYED
---E-33 AUTO-DECELERATION DOES NOT WORK WHEN AUTO-DECELERATION IS SWITCHED ON (AUTO-DECELERATION CANCEL SWITCH OFF)
---E-34 ENGINE SPEED DOES NOT RISE WHEN AUTO-DECELERATION CANCEL SWITCH IS OFF (AUTO-DECELERATION REMAINS IN EFFECT)
---E-35 AUTO-DECELERATION IS ACTUATED WHEN AUTO-DECELERATION CANCEL SWITCH IS OFF
---E-36 DEFECTIVE ENGINE CONTROL
----a) DOES NOT WORK, OR WORKS FOR A MOMENT AND THEN STOPS WORKING
----b) SWIFT SLOW-DOWN DOES NOT WORK
----c) WORKS AT NESR IDLING SPEED, BUT DOES NOT WORK UP TO FULL THROTTLE (LOAD BECOMES HIGH)
--TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)
---METHOD OF USING TROUBLESHOOTING CHARTS
---S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)
---S-2 ENGINE DOES NOT START
----(1) ENGINE DOES NOT TURN
----(2) ENGINE TURNS BUT NO EXHAUST SMOKES COMES OUT (FUEL IS NOT BEING INJECTED)
----(3) EXHAUST SMOKE COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)
---S-3 ENGINE DOES NOT PICK UP SMOOTHLY(FOLLOW-UP IS POOR)
---S-4 ENGINE STOPS DURING OPERATIONS
---S-5 ENGINE DOES NOT ROTATE SMOOTHLY(HUNTING)
---S-6 ENGINE LACKS OUTPUT (OR LACKS POWER)
---S-7 EXHAUST SMOKE IS BLACK(INCOMPLETE COMBUSTION)
---S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)
---S-9 OIL BECOMES CONTAMINATED QUICKLY
---S-10 FUEL CONSUMPTION IS EXCESSIVE
---S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN
---S-12 OIL PRESSURE MONITOR LIGHTS UP (DROP IN OIL PRESSURE)
---S-13 OIL LEVEL RISES(WATER, FUEL IN OIL)
---S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)
---S-15 ABNORMAL NOISE IS MADE
---S-16 VIBRATION IS EXCESSIVE
--TROUBLESHOOTING OF CONTROLLER INPUT SIGNAL SYSTEM (F MODE)
---F-1 MONITOR DISPLAY DOES NOT SHOW [P1](BOOM RAISE PRESSURE SWITCH)
---F-2 MONITOR DISPLAY DOES NOT SHOW [P2](BOOM LOWER PRESSURE SWITCH)
---F-3 MONITOR DISPLAY DOES NOT SHOW [P3](SWING PRESSURE SWITCH)
---F-4 MONITOR DISPLAY DOES NOT SHOW [P4](SWING PRESSURE SWITCH)
---F-5 MONITOR DISPLAY DOES NOT SHOW [P5](ARM IN PRESSURE SWITCH)
---F-6 MONITOR DISPLAY DOES NOT SHOW [P7](TRAVEL PRESSURE SWITCH)
---F-7 MONITOR DISPLAY DOES NOT SHOW [P8](BRAKE PRESSURE SWITCH)
---F-8 MONITOR DISPLAY DOES NOT SHOW [P9] (BUCKET, OFFSET PRESSURE SWITCH)
---F-9 CONTROLLER DISPLAY DOES NOT SHOW [UP](KNOB SWITCH)
---F-10 CONTROLLER DISPLAY DOES NOT SHOW [HI](TRAVEL SPEED BOOST SWITCH)
--TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM(H MODE)
---TABLE OF FAILURE MODES AND CAUSES
---H-1 SPEEDS OF ALL WORK EQUIPMENT, SWIJNG, TRAVEL ARE SLOW OR LACK POWER
---H-2 THERE IS EXCESSIVE DROP IN ENGINE SPEED, OR ENGINE ATALLS
---H-3 NO WORK EQUIPMENT, TRAVEL, SWING MOVE
---H-4 ABNORMAL NOISE GENERATED (AROUND PUMP)
---H-6 FINE CONTROL ABILITY IS POOR OR RESPONSE IS POOR
---H-7 BOOM IS SLOW OR LACKS POWER
---H-8 ARM IS SLOW OR LACKS POWER
---H-9 BUCKET IS SLOW OR LOCKS POWER
---H-10 OFFSET IS SLOW OR LACKS POWER
---H-11 WORK EQUIPMENT (BOOM, ARM, BUCKET, OFFSET) DOES NOT MOVE (BUT TRAVEL AND SWING ARE NORMAL)
---H-12 EXCESSIVE HYDRAULIC DRIFT (BOOM, ARM, OR BUCKET)
---H-13 EXCESSIVE TIME LAG (ENGINE AT LOW IDLING)
---H-14 LACK OF POWER WHEN PRESSURE RISES (EXCEPT AUTOMATIC HORIZONTAL DIGGING MACHINE)
---H-15 IN COMPOUND OPERATIONS, WORK EQUIPMENT WITH LARGER LOAD IS SLOW
---H-16 IN SWING + BOOM RAISE, BOOM RAISE IS SLOW
---H-17 IN SWING + TRAVEL, TRAVEL SPEED DROPS EXCEESSIVELY
---H-18 IN WORK EQUIPMENT (BOOM RAISE) +TRAVEL, TRAVEL SPEED DROPS EXCESSIVELY
---H-19 TRAVEL DEVIATION
----a) WHEN THERE IS DEVIATION IN NORMAL TRAVEL
----b) EXCESSIVE TRAVEL DEVIATION WHEN STARTING
---H-20 TRAVEL SPEED IS SLOW
---H-21 STEERING DOES NOT TURN EASILY OR LACKS POWER
---H-22 TRAVEL SPEED DOES NOT SWITCH OR IS FASTER THAN SPECIFIED SPEED
---H-23 TRAVEL DOES NOT MOVE (ONE SIDE ONLY)
---H-24 DOES NOT SWING
----a) DOES NOT SWING TO EITHER LEFT OR RIGHT
----b) DOES NOT SWING IN ONE DIRECTION
---H-25 SWING ACCELERATION IS POOR LOR SWING SPEED IS SLOW
---H-26 EXCESSIVE OVERRUN WHEN STOPPING SWING
----a) ONE DIRECTION ONLY
----b) BOTH DIRECTIONS
---H-27 EXCESSIVE SHOCK WHEN STOPPING SWING (ONE DIRECTION ONLY)
---H-28 EXCESSIVE ABNORMAL NOISE WHEN STOPPING SWING
---H-29 EXCESSIVE HYDRAULIC DRIFT OF SWING
----a) WHEN SWING HOLDING BRAKE IS RELESASED
----b) WHEN SWING HOLDING BRAKE IS APPLIED
---H-30 BLADE IS SLOW OR LACKS POWER
---H-31 EXCESSIVE HYDRAULIC DRIFT OF BLADE
---H-32 ERROR CODE [91] IS DISPLAYED ON MONITOR PANEL,ANG BOOM RAISE,BOOM LOWER,AND LEFT OFFSET ALL STOP JUST BEFORE THERE IS INTERFERENCE
---H-33 AUTOMATIC STOP IS NOT CARRIED OUT,AND THERE IS INTERFERENCE OF BOOM RAISE,ARM IN,AND LEFT OFFSET
--TROUBLESHOOTING OF MACHINE MONITOR SYSTEM(M MODE)
---CHASSIS MONITOR SYSTEM ELECTRICAL CIRCUIT DIAGRAM
---M-1 WHEN STARTING SWITCH IS TURNED ON, NOTHING IS DISPLAYED (NOTHING LIGHTS UP FOR 3 SEC.)
---M-2 WHEN STARTING SWITCH IS TURNED ON,ALL LAMPS LIGHT UP,BUT THEY DO NOT GO OUT AFTER 3 SEC.
---M-3 WHEN STARTING SWITCH IS TURNED ON, SOME LAMPS DO NOT LIGHT UP FOR 3 SEC.
----a) NO GAUGES LIGHT UP
----b) ELECTRIC SYSTEM CAUTION LAMP DOES NOT LIGHT UP
----c) CHARGE LEVEL CAUTION LAMP DOES NOT LIGHT UP
----d) ENGINE OIL PRESSURE CAUTION LAMP DOES NOT LIGHT UP
---M-4 WHEN STRATING SWITCH IS AT ON (ENGINE STOPPED),CHARGE LEVEL CAUTION LAMP DOES NOT LIGHT UP
---M-5 WHEN STARTING SWITCH IS AT ON (ENGINE STOPPED),ENGINE OIL PRESSURE CAUTION LAMP DOES NOT LIGHT UP
---M-6 PREHESTING PILOT LAMP DOES NOT LIGHT UP DURING PREHEATING
---M-7 ENGINE OIL PRESSURE CAUTION LAMP LIGHTS UP WHEN ENGINE IS RUNNING (ENGINE OIL PRESSURE IS NORMAL)
---M-8 CHARGE LEVEL CAUTION LIGHTS UP WHEN ENGINE IS RUNNING
---M-9 ABNORMALITY IN COOLANT TEMPERATURE SYSTEM IS DISPLAYED
----a) AFTER ENGINE ATARTS, LEVEL STAYS AT BOTTOM AND DOES NOT GO UP
----b) AFTER ENGINE ATARTS, LEVEL GOES UP IMMEDIATELY(ENTERS RED RANGE EVEN THOUGH THERE IS NO OVERHEATING)
---M-10 ABNORMAL DISPLAY IS GIVEN FOR FUEL GAUGE SYSTEM
----a) ALL FUEL LEVEL GAUGE SEGMENTS GO OUT
----b) FUEL HAS GONE DOWN, BUT FUEL GAUGE CONTINUES TO DISPALY FULL
----c) EVEN WHEN FUEL TANK IS FILLED,FUEL LEVEL GAUGE DOES NOT SHOW FULL
---M-11 DEFECTIVE OPERATION OF ALARM BUZZER
----a) BUZZER DOES NOT SOUND
----b) BUZZER DOES NOT STOP SOUNDING
---M-12 SERVICE MEMTER DOES NOT MOVE WHEN ENGINE IS RUNNING
----a) WHEN CHARGE LEVEL CAUTION LAMP DOES NOT LIGHT UP
----b) WHEN CHARGE LEVEL CAUTION LAMP LIGHTS UO
---M-13 NIGHT LIGHTING DOES NOT LIGHT UP
----a) COOLANT TEMPERATURE GAUGE,FULE GAUGE,DEPTH DISPLAY DO NOT LIGHT UP
----b) SERVICE METER DOES NOT LIGHT UP
---M-14 ELECTRIC SYSTEM CAUTION LAMP STAYS LIGHTED UP (THERE IS NO ABNORMALITY DISPLAY ON CONTROLLER,OPERATION IS NORMAL)
----a) STD MACHINE
----b) MACHINE EQUIPPED WITH AUTIMATIC HORIZONTAL DIGGING SYSTEM
30 DISASSEMBLY AND ASSEMBLY
-METHOD OF USING MANUAL
-PRECAUTIONS WHEN CARRYING OUT OPERATION
-SPECIAL TOOL LIST
-SKECHES OF SPECIAL TOOLS
-STARTING MOTOR
--REMOVEL AND INSTALLATION
-ALTERNATOR
--REMOVAL AND INSTALLATION
-ENGINE OIL COOLER
--REMOVEL AND INSTALLATION
-FUEL INJECTION PUMP
--REMOVAL
--INSTALLATION
-WATER PUMP
--REMOVAL AND INSTALLATION
-NOZZLE HOLDER
--REMOVAL AND INATALLATION
-TURBOCHARGER
--REMOVAL
--INSTALLATION
-THERMOSTAT
--REMOVAL AND INSTALLATION
-CYLINDER HEAD
--REMOVAL
--INSTALLATION
-ENGINE, MAIN PUMP
--REMOVAL
--INTALLATION
-RADIATOR, HYDRAULIC COOLER
--REMOVAL
--INSTALLATION
-FUEL TANK
--REMOVAL
--INSTALLATION
-CENTER SWIVEL JOINT
--REMOVAL AND INATALLATION
--DISASSEMBLY AND ASSEMBLY
-SPROCKET
--REMOVAL AND INSTALLATION
-TRAVEL MOTOR
--REMOVAL AND INSTALLATION
-SWING MOTOR, SWINMG MACHINERY
--REMOVAL
--INSTALLATION
-SWING MACHINERY
--DISASSEMBLY
--ASSEMBLY
-SWING MOROR
--REMOVAL AND INSTALLATION
--DISASSEMBLY
--ASSEMBLY
-REVOLVING FRAME
--REMOVAL
--INSTALLATION
-SWING CIRCLE
--REMOVAL AND INSTALLATION
-IDLER, RECOIL SPRING
--REMOVAL AND INSTALLATION
-RECOIL SPRING
--DISASSEMBLY
--ASSEMBLY
-IDLER
--DISASSEMBLY
--ASSEMBLY
-TRACK ROLLER
--REMOVAL AND INSTALLATION
--DISASEMBLY
--ASSEMBLY
-CARRIER ROLLER
--REMOVAL AND INSTALLATION
-SEEEL SHOE RUBBER PAD SHOE, LOAD LINER
--REMOVAL AND INSTALLATION
-INTEGRATED RUBBER SHOE
--REMOVAL AND INSTALLATION
-HYDRAULIC TANK
--REMOVAL
--INSTALLATION
-MAIN PUMP
--REMOVAL
--INSTALLATION
--DISASSEMBLY
--ASSEMBLY
-CONTROL PUMP
--REMOVAL AND INSTALLATION
-PC-EPC, LS-EPC VALVE
--REMOVAL AND INSTALLATION
-PC VALVE
--REMOVAL AND INSTALLATION
-LS VALVE
--REMOVAL AND INSTALLATION
-CONTROL VALVE
--REMOVAL
--INSTALLATION
--DISASSEMBLY
--ASSEMBLY
-LS SELSECT VALVE
--DISASSEMBLY AND ASSEMBLY
-LS SHUTTLE VALVE
--DISASSEMBLY AND ASSEMBLY
-PRESSURE COMPENSATION VALVE
--DISASSEMBLY AND ASSEMBLY
-MAIN RELIEF VALVE
--REMOVAL AND INSTALLATION
--DISASSEMBLY AND ASSEMBLY
-SOLENOID VALVE
--(LS BYPASS, SWING HOLDING BRAKE, TRAVEL SPEED BOOST)
---REMOVAL AND INSTALLATION
--(EPC, LEFT OFFSET)
---REMOVAL AND INSTALLATION
-WORK EQUIPMENT LH.PPC VALVE (ARM, SWING)
--REMOVAL AND INSTALLATION
-WORK EAUIPMENT R.H. PPC VALVE (BOOM, BUCKET)
--REMOVAL AND INSTALLATION
-WORK EQUIPMENT PPC VALVE (BOOM, BUCKET, ARM, SWING)
--DISASSEMBLY
--ASSEMBLY
-TRAVEL PPC VALVE
--REMOVAL AND INSTALLATION
--DISASSEMBLY AND ASSEMBLY
-PPC VALVE FPR OFFSET CONTROL
--REMOVAL AND INSTALLATION
-BLADE PPC VALVE
--REMOVAL AND INSTALLATION
-BOOM LOCK VALVE
--REMOVAL AND INSTALLATION
-BOOM CYLINDER
--REMOVAL
--INSTALLATION
-ARM CYLINDER
--REMOVAL
--INSTALLATION
-BUCKET CYLINDER
--REMOVAL
--INSATLLATION
-OFFSET CYLINDER
--REMOVAL
--INSTALLATION
-BLADE CYLINDER
--REMOVAL
--INSTALLATION
-HYDRAULIC CYLINDER
--DISASSEMBLY
--ASSEMBLY
-WORK EQUIPMENT
--REMOVAL
--INSTALLATION
-BUCKET
--REMOVAL
--INSTALLATION
-ARM
--REMOVAL
--INSTALLATION
-BUCKET, ARM
--REMOVAL
--INSTALLATION
-SECOND BOOM
--REMOVAL
--INSTALLATION
-1ST BOOM
--REMOVAL
--INSTALLATION
-BLADE
--REMOVAL AND INSTALLATION
-OPERATOR'S CAB
--REMOVAL
--INSTALLATION
-FLOOR FRAME
--REMOVAL
--INSTALLATION
-AIR CONDITIONER COMPRESSOR
--REMOVAL
--INSTALLATION
-AIR CONDENSER
--REMOVAL
--INSTALLATION
-COUNTERWEIGHT
--REMOVAL AND INSTALLATION
-CONTROLLER
--REMOVAL AND INSTALLATION
-MONITOR
--REMOVAL AND INSTALLATION
-CAR COOLER UNIT
--REMOVAL AND INSTALLATION
40 MAINTENANCE STANDARD
-SWING MACHINERY
-SWING CIRCLE
-TRACK FRAME
-IDLER
-CARRIER ROLLER
-TRACK ROLLER
-SPROCKET
-TRACK SHOE
-HYDRAULIC PUMP
-CONTROL VALVE
-SWING MOTOR
-TRAVEL MOTOR
-CENTER SWIVEL JOINT
-PPC VALVE
-PPC SHUTTLE・TRAVEL JUNCTION VALVE
-EPC SOLENOID VALVE
-BOOM HOLDING VALVE
-HYDRAULIC CYLINDER
-WORK EQUIPMENT
-DIMENSION OF WORK EQUIPMENT
90 OTHERS
-HYDRAULIC PIPING DRAWING
-MACHINE EQUIPMENT WITH AUTOMATIC HORIZONTAL EXCAVATION CONTROL (PC128UU-1)
-HYDRAUIC CIRCUIT DIAGRAM (PC128UU-1)
-MACHINE EQUIPMENT WITH AUTOMATIC HORIZONTAL EXCAVATION CONTROL (PC128UU-1)
-CLSS
--OPERATION OF CLSS SYSTEM AS A WHOLE
--1) WHEN ALL CONTROL VALVES ARE AT NEUTRAL
--2) WHEN BOOM RAISE IS OPERATED INDEPENDENTLY
--3) WHEN SWING IS OPERATED INDEPENDENTLY
--4) WHEN BOOM AND ARM ARE OPERATED SIMULTANEOUSLY
-ACTUAL ELECTRICAL WIRING DIAGRAM (PC128UU-1)
--MACHINE EQUIPMENT WITH AUTOMATIC HORIZONTAL EXCAVATION CONTROL (PC128UU-1)
-ELECTRICAL CIRCUIT DIAGRAM (PC128UU-1)
--MACHINE EQUIPMENT WITH AUTOMATIC HORIZONTAL EXCAVATION CONTROL (1/2) (PC128UU-1)
--MACHINE EQUIPMENT WITH AUTOMATIC HORIZONTAL EXCAVATION CONTROL (2/2) (PC128UU-1)
-ELECTRONIC CONTRAL SYSTEM
--OVERALL SYSTEM DRAWING
--MACHINE EQUIPMENT WITH AUTOMATIC HORIZONTAL EXCAVATION CONTROL
-HYDRAUIC CIRCUIT DIAGRAM (PC128US-1)
-ELECTRICAL CIRCUIT DIAGRAM (PC128US-1)
-CONNECTOR ARRANGEMENT DIAGRAM
-