Komatsu PC228US-2, PC228USLC-1, PC228USLC-2 Hydraulic Excavator Service Shop Manual - SEBM015903

This Complete Service Repair Workshop Manual PDF Download for the PC228US-2, PC228USLC-1, PC228USLC-2 Komatsu 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 PC228USLC-1 - S/N: 11001 and up
Komatsu PC228US-2 - S/N: 15001 and up
Komatsu PC228USLC-2 - S/N: 15001 and up

PC228US, PC228USLC mount the S6D102E-1 engine.
For details of the engine, see the 102 Series Engine Shop Manual.


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 : SEBM015903
Total Pages : 661


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
SPECIFICATION DIMENSION DRAWINGS
SPECIFICATIONS
WEIGHT TABLE
FUEL,COOLANT AND LUBRICANTS

10 STRUCTURE AND FUNCTION
ENGINE RELATED PARTS
RADIATOR・OIL COOLER・AFTERCOOLER
POWER TRAIN
FINAL DRIVE
SWING CIRCLE
SWING MACHINERY
TRACK FRAME・RECOIL SPRING
TRACK SHOE
HYDRAULIC PIPING DRAWING
HYDRAULIC CIRCUIT DIAGRAM
HYDRAULIC TANK
HYDRAULIC PUMP
CONTROL VALVE
SELF-REDUCING PRESSURE VALVE
SAFETY-SUCTION VALVE FOR SERVICE VALVE
SWING MOTOR
CENTER SWIVEL JOINT
TRAVEL MOTOR
VALVE CONTROL
WORK EQUIPMENT・SWING PPC VALVE
TRAVEL PPC VALVE
PPC ACCUMULATOR
STRAIGHT-TRAVEL SYSTEM
LS-EPC VALVE
SOLENOID VALVE
BOOM HOLDING VALVE
WORK EQUIPMENT
ACTUAL ELECTRIC WIRING DIAGRAM
ELECTRICAL CIRCUIT DIAGRAM
ENGINE CONTROL SYSTEM
ELECTRONIC CONTROL SYSTEM
MACHINE MONITORING SYSTEM

20 TESTING AND ADJUSTING
TABLE OF JUDGEMENT STANDARD VALUE
STANDARD VALUE TABLE FOR ELECTRICAL PARTS
TESTING AND ADJUSTING
TOOLS FOR TESTING,ADJUSTING,AND TROUBLESHOOTING
MEASURING ENGINE SPEED
MEASURING EXHAUST GAS COLOR
ADJUSTING VALVE CLEARANCE
MEASURING COMPRESSION PRESSURE
MEASURING BLOW-BY PRESSURE
TESTING AND ADJUSTING FUEL INJECTION TIMING
MEASURING ENGINE OIL PRESSURE
TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION
MEASURING SPEED SENSOR
ADJUSTING ENGINE STOP SOLENOID LINKAGE
ADJUSTING ACCELERATOR ACTUATOR CABLE
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
MEASURING CONTROL CIRCUIT OIL PRESSURE (REDUCED PUMP DISCHARGE SELF-REDUCING PRESSURE)
TESTING SOLENOID VALVE OUTPUT PRESSURE
MEASURING PPC VALVE OUTPUT PRESSURE
ADJUSTING WORK EQUIPMENT・SWING PPC VALVE
TESTING TRAVEL DEVIATION
CHECKING LOCATION OF CAUSE OF HYDRAULIC DRIFT OF WORK EQUIPMENT
MEASURING OIL LEAKAGE OF SWING,TRAVEL MOTOR
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
TESTING CLEARANCE OF SWING CIRCLE BEARING
MEASURING WEAR OF SPROCKET
TESTING AND ADJUSTING TRACK SHOE TENSION
BLEEDING AIR
PROCEDURE FOR RESETTING ELECTRICAL SYSTEM AND CHECKING OPERATION
PROCEDURE FOR REPLACING POTENTIOMETER
PROCEDURE 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
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
EXPLANATIONS OF CONTROL MECHANISM OF ELECTRICAL SYSTEM
DISPLAY METHOD FOR MONITOR PANEL,CONTROLLER MONITOR PANEL,CONTROLLER DISPLAY METHOD
ERROR CODE TABLE
METHOD OF USING TROUBLESHOOTING CHARTS
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 SMOKE 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 (NO 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 IN COOLING WATER,OR WATER SPURTS BACK,OR WATER LEVEL GOES DOWN
S-12 OIL PRESSURE CAUTION LAMP 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,ELECTRICAL SYSTEM(E MODE)
ELECTRICAL CIRCUIT DIAGRAM FOR CONTROLLER SYSTEM
ELECTRICAL CIRCUIT DIAGRAM FOR ENGINE START,PREHEAT,STOP SYSTEM
ELECTRICAL CIRCUIT DIAGRAM FOR MACHINE MONITOR SYSTEM
ACTION TAKEN BY SELF-DIAGNOSTIC FUNCTION AND PROBLEMS ON MACHINE
JUDGEMENT TABLE FOR CHASSIS RELATED PARTS
E-101 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-102 ERROR CODE [31] (ABNORMALITY IN BOOM POTENTIOMETER SYSTEM) IS DISPLAYED
E-103 ERROR CODE [41] (ABNORMALITY IN ROTATION SENSOR SYSTEM) IS DISPLAYED
E-104 ERROR CODE [42] (ABNORMALITY IN FUEL CONTROL DIAL POTENTIOMETER SYSTEM) IS DISPLAYED
E-105 ERROR CODE [44] (ABNORMALITY IN FEEDBACK POTENTIOMETER SYSTEM) IN DISPLAYED
E-106 ERROR CODE [54] (ABNORMALITY IN SWING HOLDING BRAKE SOLENOID SYSTEM) IS DISPLAYED
E-107 ERROR CODE [58] (ABNORMALITY IN PUMP MERGE/DIVIDER SOLENOID SYSTEM) IS DISPLAYED
E-108 ERROR CODE [62] (ABNORMALITY IN ACCELERATOR MOTOR (+) RELAY SYSTEM) IS DISPLAYED
E-109 ERROR CODE [64] (ABNORMALITY IN 2-STAGE RELIEF SOLENOID SYSTEM) IS DISPLAYED
E-110 ERROR CODE [68] (ABNORMALITY IN ACCELERATOR MOTOR (-) RELAY SYSTEM) IS DISPLAYED
E-111 ERROR CODE [71] (ABNORMALITY IN BOOM RAISE STOP SOLENOID SYSTEM) IS DISPLAYED
E-112 ERROR CODE [74] (ABNORMALITY IN PC-EPC SOLENOID SYSTEM) IS DISPLAYED
E-113 ERROR CODE [81] (ABNORMALITY IN PC-EPC SOLENOID SYSTEM) IS DISPLAYED
E-114 ERROR CODE [C1] (BOOM RAISE,BOOM LOWER PRESSURE SWITCHES INPUT AT SAME TIME FOR MORE THAN 3 SECONDS) IS DISPLAYED
E-115 WORK EQUIPMENT DOES NOT MOVE EVEN WHEN WORK EQUIPMENT LOCK LEVER IS RELEASED
E-116 WORK EQUIPMENT LOCK LEVER IS AT LOCK POSITION BUT WORK EQUIPMENT MOVES
E-117 ELECTRICAL SYSTEM CANCEL SWITCH IS NOT TURNED ON,BUT ALARM BUZZER SOUNDS FOR 7 SECONDS AND ELECTRICAL SYSTEM CAUTION LAMP FLASHES
E-118 BOOM CUSHION HAS NO EFFECT
E-119 SWING DOES NOT WORK (WHEN NO ERROR DISPLAY IS GIVEN)
E-120 EXCESSIVE HYDRAULIC DRIFT OF SWING
E-121 ENGINE DOES NOT START
a) STARTING MOTOR DOES NOT TURN
b) ENGINE STOP SOLENOID DOES NOT WORK
E-122 ENGINE DOES NOT STOP
E-123 AUTO-DECELERATION IS ACTUATED EVEN WHEN AUTO-DECELERATION SWITCH IS OFF
E-124 AUTO-DECELERATION IS NOT ACTUATED WHEN AUTO-DECELERATION SWITCH IS SWITCHED ON
E-125 ENGINE ROTATION IS IRREGULAR
E-126 WIPER DOES NOT WORK
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 [P5] (ARM IN PRESSURE SWITCH)
F-5 MONITOR DISPLAY DOES NOT SHOW [P7] (TRAVEL PRESSURE SWITCH)
F-6 MONITOR DISPLAY DOES NOT SHOW [P9] (ARM OUT,BUCKET,OFFSET PRESSURE SWITCH)
F-7 CONTROLLER DISPLAY DOES NOT SHOW [UP] POWER MAX.SIGNAL (KNOB SWITCH SIGNAL)
F-8 CONTROLLER DISPLAY DOES NOT SHOW [Hi] (TRAVEL SPEED BOOST SWITCH)
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)
TABLE OF FAILURE MODES AND CAUSES FOR HYDRAULIC AND MECHANICAL SYSTEM
PUMP MERGE/DIVIDER LOGIC
H-1 SPEEDS OF ALL WORK EQUIPMENT,SWING,TRAVLE ARE SLOW OR LACK POWER
H-2 THERE IS EXCESSIVE DROP IN ENGINE SPEED,OR ENGINE STALLS
H-3 NO WORK EQUIPMENT,TRAVEL,SWING MOVE
H-4 ABNORMAL NOISE GENERATED (AROUND PUMP)
H-5 AUTO-DECELERATION DOES NOT WORK (PPC SHUTTLE VALVE IS EQUIPPED ONLY IN TRAVEL PPC VALVE)
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 LACKS POWER
H-10 WORK EQUIPMENT (BOOM,ARM,BUCKET) DOES NOT MOVE (BUT TRAVEL AND SWING ARE NORMAL)
H-11 EXCESSIVE HYDRAULIC DRIFT (BOOM,ARM,OR BUCKET)
H-12 EXCESSIVE TIME LAG (ENGINE AT LOW IDLING)
H-13 OTHER EQUIPMENT MOVES WHEN SINGLE CIRCUIT IS RELIEVED
H-14 LACK OF POWER WHEN PRESSURE RISES
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 EXCESSIVELY
H-18 TRAVEL DEVIATION
H-19 TRAVLE SPEED IS SLOW
H-20 STEERING DOES NOT TURN EASILY OR LACKS POWER
H-21 TRAVEL SPEED DOES NOT SWITCH OR IS FASTER THAN SPECIFIED SPEED
H-22 TRAVEL DOES NOT MOVE (ONE SIDE ONLY)
H-23 DOES NOT SWING
H-24 SWING ACCELERATION IS POOR OR SWING SPEED IS SLOW
H-25 EXCESSIVE OVERRUN WHEN STOPPING SWING
H-26 EXCESSIVE SHOCK WHEN STOPPING SWING (ONE DIRECTION ONLY)
H-27 EXCESSIVE ABNORMAL NOISE WHEN STOPPING SWING
H-28 EXCESSIVE HYDRAULIC DRIFT OF SWING
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 STARTING 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 PREHEATING 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 LAMP LIGHTS UP WHEN ENGINE IS RUNNING
M-9 ABNORMALITY IN COOLANT TEMPERATURE SYSTEM IS DISPLAYED
a) AFTER ENGINE STARTS,LEVEL STAYS AT BOTTOM AND DOES NOT GO UP
b) AFTER ENGINE STARTS,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 LEVEL HAS GONE DOWN,BUT FUEL GAUGE CONTINUES TO DISPLAY FULL
c) EVEN WHEN FUEL TANK IS FILLED,FUEL LEVEL GAUGE DOES NOT SHOW FULL
M-11 WHEN STARTING SWITCH IS ON (ENGINE STOPPED),ENGINE OIL LEVEL CAUTION LAMP FLASHES
M-12 DEFECTIVE OPERATION OF ALARM BUZZER
a) BUZZER DOES NOT SOUND
b) BUZZER DOES NOT STOP SOUNDING
M-13 SERVICE METER DOES NOT MOVE WHEN ENGINE IS RUNNIGN
a) WHEN CHARGE LEVEL CAUTION LAMP DOES NOT LIGHT UP
b) WHEN CHARGE LEVEL CAUTION LAMP LIGHTS UP
M-14 NIGHT LIGHTING DOES NOT LIGHT UP
a) COOLANT TEMPERATURE GAUGE, FUEL GAUGE,DEPTH DISPLAY DO NOT LIGHT UP
b) SERVICE METER DOES NOT LIGHT UP
M-15 ELECTRIC SYSTEM CAUTION LAMP STAYS LIGHTED UP (THERE IS NO ABNORMALITY DISPLAY ON CONTROLLER,OPERATION IS NORMAL)

30 DISASSEMBLY AND ASSEMBLY
METHOD OF USING MANUAL
PRECAUTIONS WHEN CARRYING OUT OPERATION
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
STARING MOTOR
REMOVAL AND INSTALLATION
ALTERNATOR
REMOVAL AND INSTALLATION
ENGINE OIL COOLER CORE
REMOVAL AND INSTALLATION
FUEL INJECTION PUMP
REMOVAL
INSTALLATION
WATER PUMP
REMOVAL AND INSTALLATION
NOZZLE HOLDER
REMOVAL AND INSTALLATION
TURBOCHARGER
REMOVAL AND INSTALLATION
THERMOSTAT
REMOVAL AND INSTALLATION
CYLINDER HEAD
REMOVAL
INSTALLATION
ENGINE,MAIN PUMP
REMOVAL
INSTALLATION
DAMPER
REMOVAL AND INSTALLATION
ENGINE FRONT SEAL
REMOVAL AND INSTALLATION
ENGINE REAR SEAL
REMOVAL
INSTALLATION
RADIATOR,HYDRAULIC COOLER
REMOVAL
INSTALLATION
FUEL TANK
REMOVAL
INSTALLATION
CENTER SWIVEL JOINT
REMOVAL
INSTALLATION
CENTER SWIVEL JOINT
DISASSEMBLY AND ASSEMBLY
SPROCKET
REMOVAL AND INSTALLATION
FINAL DRIVE,TRAVEL MOTOR
REMOVAL AND INSTALLATION
FINAL DRIVE
DISASSEMBLY
ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRAVEL MOTOR
ASSEMBLY DRAWINGS
PARTS LIST
TOOLS LIST FOR DISASSEMBLY AND ASSEMBLY
1.STANDARD TOOLS
2.MANUFACTURED TOOLS
DISASSEMBLY PROCEDURE
1.GENERAL PRECAUTIONS
2.DISASSEMBLY PROCEDURE
2-1.DISASSEMBLY OF BRAKE VALVE
2-2.DISASSEMBLY OF HYDRAULIC MOTOR
2-3.DISASSEMBLY OF REDUCTION GEAR ASSEMBLY
MAINTENANCE STANDARD
1.SEALS
2.MAINTENANCE STANDARD FOR WORM PARTS
ASSEMBLY PROCEDURE
1.GENERAL PRECAUTIONS
2.ASSEMBLY PROCEDURE
2-1.ASSEMBLY OF BRAKE VALVE
2-2.ASSEMBLY OF REDUCTION GEAR ASSEMBLY AND HYDRAULIC MOTOR
PERFORMANCE TEST
LIST OF CLEARANCE ADJUSTMENT PARTS
SWING MOTOR,SWING MACHINERY
REMOVAL AND INSTALLATION
SWING MACHINERY
DISASSEMBLY
ASSEMBLY
SWING MOTOR
REMOVAL AND INSTALLATION
REVOLVING FRAME
REMOVAL
INSTALLATION
SWING CIRCLE
REMOVAL
INSTALLATION
IDLER,RECOIL SPRING
REMOVAL AND INSTALLATION
RECOIL SPRING
DISASSEMBLY
ASSEMBLY
IDLER
DISASSEMBLY
ASSEMBLY
TRACK ROLLER
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
CARRIER ROLLER
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
TRACK SHOE
REMOVAL AND INSTALLATION
HYDRAULIC TANK
REMOVAL AND INSTALLATION
MAIN PUMP
REMOVAL
INSTALLATION
EPC VALVE
REMOVAL AND INSTALLATION
PC VALVE
REMOVAL AND INSTALLATION
LS VALVE
REMOVAL AND INSTALLATION
CONTROL VALVE
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
LS SELECT VALVE
DISASSEMBLY AND ASSEMBLY
PRESSURE COMPENSATION VALVE
DISASSEMBLY
ASSEMBLY
MAIN RELIEF VALVE
REMOVAL AND INSTALLATION
DISASSEMBLY AND ASSEMBLY
SOLENOID VALVE
REMOVAL AND INSTALLATION
PUMP MERGE/DIVIDER SOLENOID VALVE
REMOVAL AND INSTALLATION
2-STAGE RELIEF,TRAVEL HI/LO SOLENOID VALVE
REMOVAL AND INSTALLATION
INTERFERENCE PREVENTION SOLENOID VALVE
REMOVAL AND INSTALLATION
LEFT WORK EQUIPMENT PPC VALVE (FOR SWING, ARM CONTROL)
REMOVAL AND INSTALLATION
RIGHT WORK EQUIPMENT PPC VALVE (FOR BOOM,BUCKET CONTROL)
REMOVAL AND INSTALLATION
WORK EQUIPMENT PPC VALVE (PPC VALVE FOR BOOM,BUCKET,ARM,SWING CONTROL)
DISASSEMBLY
ASSEMBLY
TRAVEL PPC VALVE
REMOVAL AND INSTALLATION
DISASSEMBLY AND ASSEMBLY
PPC VALVE FOR OFFSET CONTROL
REMOVAL AND INSTALLATION
BOOM LOCK VALVE
REMOVAL AND INSTALLATION
BOOM CYLINDER
REMOVAL
INSTALLATION
ARM CYLINDER
REMOVAL
INSTALLATION
BUCKET CYLINDER
REMOVAL
INSTALLATION
OFFSET CYLINDER
REMOVAL
INSTALLATION
HYDRAULIC CYLINDER FOR OFFSET
DISASSEMBLY
ASSEMBLY
HYDRAULIC CYLINDER FOR BOOM,ARM,BUCKET
DISASSEMBLY
ASSEMBLY
BUCKET
REMOVAL
INSTALLATION
ARM
REMOVAL
INSTALLATION
BUCKET,ARM
REMOVAL
INSTALLATION
OFFSET BRACKET
REMOVAL AND INSTALLATION
2ND BOOM
REMOVAL
INSTALLATION
1ST BOOM
REMOVAL
INSTALLATION
2ND,1ST BOOM
REMOVAL
INSTALLATION
OFFSET BRACKET,2ND,1ST BOOM
REMOVAL
INSTALLATION
BOOM
REMOVAL
INSTALLATION
OPERATOR'S CAB
REMOVAL
INSTALLATION
FLOOR FRAME
REMOVAL
INSTALLATION
AIR CONDITIONER COMPRESSOR
REMOVAL AND INSTALLATION
AIR CONDITIONER CONDENSER
REMOVAL AND INSTALLATION
AIR CONDITIONER UNIT
REMOVAL
INSTALLATION
COUNTERWEIGHT
REMOVAL AND INSTALLATION
CONTROLLER
REMOVAL AND INSTALLATION
MONITOR
REMOVAL AND INSTALLATION

40 MAINTENANCE STANDARD
FINAL DRIVE
SWING CIRCLE
SWING MACHINERY
TRACK FRAME・RECOIL SPRING
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK SHOE
HYDRAULIC PUMP
CONTROL VALVE
SELF-REDUCING PRESSURE VALVE
SWING MOTOR
TRAVEL MOTOR
WORK EQUIPMENT・SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
LS-EPC VALVE
SOLENOID VALVE
CENTER SWIVEL JOINT
BOOM HOLDING VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT
DIMENSION OF WORK EQUIPMENT

90 OTHERS
HYDRAULIC CIRCUIT DIAGRAM
PC228USLC-1
PC228US-2,PC228USLC-2
ELECTRICAL CIRCUIT DIAGRAM
PC228USLC-1
PC228US-2,PC228USLC-2

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