Komatsu PC300-6, PC300LC-6, PC350-6, PC350LC-6 Hydraulic Excavator Service Shop Manual - SEBM006603

This complete service repair workshop manual PDF download for the PC300-6, PC300LC-6, PC350-6, PC350LC-6 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 PC300-6 - SN: 30001 and up
Komatsu PC300LC-6 - SN: 30001 and up
Komatsu PC350-6 - SN: 10001 and up
Komatsu PC350LC-6 - SN: 10001 and up
Engine : SAA6D108-2


TABLE OF CONTENTS :

- GENERAL
- STRUCTURE AND FUNCTION
- TESTING AND ADJUSTING
- DISASSEMBLY AND ASSEMBLY
- MAINTENANCE STANDARD
- OTHERS


MANUAL SPECIFICATION :

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : SEBM006603
Total Pages : 747

PC300, 350-6 mount the SAA6D108-2 engine.
For details of the engine, see the 108-2 Series Engine Shop Manual.

This service repair workshop manual PDF download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same Repair Service manual your local dealer will use when doing a repair.

Instant Download means there is NO shipping costs or waiting for a CD or paper manual to arrive in the mail! You will receive this manual TODAY via Instant Download on completion of payment via our secure payment processor. We accept ALL major credit/debit cards/paypal.

-

01 GENERAL
SPECIFICATION DRAWINGS
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT AND LUBRICANTS

10 STRUCTURE AND FUNCTION
PARTS RELATED TO ENGINE
RADIATOR, OIL COOLER
POWER TRAIN
FINAL DRIVE
SWING CIRCLE
SWING MACHINERY
TRACK FRAME, RECOIL SPRING
TRACK SHOE
HYDRAULIC PIPING DRAWING
HYDRAULIC CIRCUIT DRAWING
HYDRAULIC TANK, HYDRAULIC FILTER
HYDRAULIC PUMP
CONTROL VALVE
SUCTION SAFETY VALVE
CLSS
SWING MOTOR
CENTER SWIVEL JOINT
TRAVEL MOTOR
VALVE CONTROL
WORK EQUIPMENT, SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
PPC SAFETY LOCK VALVE
PPC ACCUMULATOR
PPC SHUTTLE VALVE, TRAVEL JUNCTION VALVE
EPC SOLENOID VALVE
FOR LS SELECT, BOOM HI 2-STAGE SAFETY VALVE, MERGE/FLOW DIVIDER, TRAVEL SPEED, SWING BRAKE
FOR LS VALVE CONTROL
BOOM HOLDING VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT
ACTUAL ELECTRIC WIRING DIAGRAM
ELECTRIC CIRCUIT DIAGRAM
ENGINE CONTROL
ELECTRONIC CONTROL SYSTEM
MACHINE MONITOR SYSTEM
FRONT WINDOW AUTO PULL-UP SYSTEM

20 TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
STANDARD VALUE TABLE FOR ELECTRICAL PARTS
TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
MEASURING ENGINE SPEED
MEASURING EXHAUST COLOR
ADJUSTING VALVE CLEARANCE
MEASURING COMPRESSION PRESSURE
MEASURING BLOW-BY PRESSURE
TESTING AND ADJUSTING FUEL INJECTION TIMING
MEASURING ENGINE OIL PRESSURE
TESTING AND ADJUSTING ALTERNATOR BELT TENSION
TESTING AND ADJUSTING WATER PUMP BELT TENSION
TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR
ADJUSTING ENGINE SPEED SENSOR
MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE)
TESTING AND ADJUSTING GOVERNOR MOTOR LEVER STROKE
TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING, TRAVEL CIRCUIT
TESTING AND ADJUSTING TVC VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE)
TESTING AND ADJUSTING LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) AND LS DIFFERENTIAL PRESSURE
TESTING AND ADJUSTING CONTROL PUMP CIRCUIT OIL PRESSURE
TESTING SOLENOID VALVE OUTPUT PRESSURE
MEASURING PPC VALVE OUTPUT PRESSURE AND TESTING PPC SHUTTLE VALVE
ADJUSTING WORK EQUIPMENT,SWING PPC VALVE
TESTING TRAVEL DEVIATION
TESTING LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT
MEASURING OIL LEAKAGE
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
TESTING CLEARANCE OF SWING CIRCLE BEARING
TESTING AND ADJUSTING TRACK SHOE TENSION
BLEEDING AIR
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
EXPLANATION OF CONTROL MECHANISM FOR ELECTRICAL SYSTEM
DISPLAY METHOD AND SPECIAL FUNCTIONS OF MONITOR PANEL
METHOD OF USING JUDGEMENT TABLE
METHOD OF USING TROUBLESHOOTING CHARTS
DETAILS OF TROUBLESHOOTING AND TROUBLESHOOTING PROCEDURE
SERVICE CODE TABLE
TROUBLESHOOTING OF COMMUNICATION ABNORMALITY SYSTEM (N MODE)
N-1 [E218] COMMUNICATION ABNORMALITY
TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER (GOVERNOR CONTROL SYSTEM) (E MODE)
POINTS TO REMEMBER WHEN CARRYING OUT TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER SYSTEM
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE
JUDGEMENT TABLE FOR GOVERNOR, PUMP GOVERNOR (GOVERNOR CONTROL SYSTEM) AND ENGINE RELATED PARTS
ELECTRICAL CIRCUIT DIAGRAM FOR E MODE SYSTEM
E-1 ABNORMALITY IN GOVERNOR, PUMP CONTROLLER POWER SOURCE (CONTROLLER LED IS OFF)
E-2 [E308] ABNORMALITY IN FUEL CONTROL DIAL INPUT VALUE IS DISPLAYED
E-3 [E317] ABNORMALITY (DISCONNECTION) IN GOVERNOR MOTOR DRIVE SYSTEM IS DISPLAYED
E-4 [E318] ABNORMALITY (SHORT CIRCUIT) IN GOVERNOR MOTOR DRIVE SYSTEM IS DISPLAYED
E-5 [E306] ABNORMALITY IN FEEDBACK POTENTIOMETER SYSTEM IS DISPLAYED
E-6 [E315] ABNORMALITY (SHORT CIRCUIT) IN BATTERY RELAY OUTPUT SYSTEM IS DISPLAYED
E-7 [E316] ABNORMALITY (STEP-OUT) IN MOTOR IS DISPLAYED
E-8 ENGINE DOES NOT START
E-9 ENGINE SPEED IS IRREGULAR
a) IDLING SPEED IS IRREGULAR
b) THERE IS HUNTING
E-10 LACK OF OUTPUT (ENGINE HIGH IDLING SPEED IS TOO LOW)
E-11 ENGINE DOES NOT STOP
E-12 DEFECTIVE OPERATION OF BATTERY RELAY SYSTEM (ENGINE DOES NOT STOP)
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
S-4 ENGINE STOPS DURING OPERATIONS
S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)
S-6 ENGINE LACKS OUTPUT (NO POWER)
S-7 EXHAUST SOMKE IS BLACK
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 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 GOVERNOR, PUMP CONTROLLER (PUMP CONTROL SYSTEM) (C MODE)
POINTS TO REMEMBER WHEN TROUBLESHOOTING PUMP CONTROLLER SYSTEM
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE
JUDGEMENT TABLE FOR GOVERNOR, PUMP CONTROLLER (PUMP CONTROL SYSTEM) AND HYDRAULIC RELATED PARTS
ELECTRICAL CIRCUIT DIAGRAM FOR C MODE
C-1 ABNORMALITY IN CONTROLLER POWER SOURCE SYSTEM (CONTROLLER LED IS OFF)
C-2 [E232] SHORT CIRCUIT IN FRONT PUMP TVC SOLENOID SYSTEM IS DISPLAYED
C-3 [E233] DISCONNECTION IN FRONT PUMP TVC SOLENOID SYSTEM IS DISPLAYED
C-4 [E236] SHORT CIRCUIT IN REAR PUMP TVC SOLENOID SYSTEM IS DISPLAYED
C-5 [E237] DISCONNECTION IN REAR PUMP TVC SOLENOID SYSTEM IS DISPLAYED
C-6 [E202] SHORT CIRCUIT IN LS SELECT SOLENOID SYSTEM IS DISPLAYED
C-7 [E212] DISCONNECTION IN LS SELECT SOLENOID SYSTEM IS DISPLAYED
C-8 [E203] SHORT CIRCUIT IN SWING BRAKE SOLENOID SYSTEM IS DISPLAYED
C-9 [E213] DISCONNECTION IN SWING BRAKE SOLENOID SYSTEM IS DISPLAYED
C-10 [E204] SHORT CIRCUIT IN PUMP MERGE/DIVIDER SOLENOID SYSTEM IS DISPLAYED
C-11 [E214] DISCONNECTION IN PUMP MERGE/DIVIDER SOLENOID SYSTEM IS DISPLAYED
C-12 [E206] SHORT CIRCUIT IN TRAVEL SPEED SOLENOID SYSTEM IN DISPLAYED
C-13 [E216] DISCONNECTION IN TRAVEL SPEED SELECTOR SOLENOID SYSTEM IS DISPLAYED
C-14 [E217] MODEL SELECTION INPUT ERROR IS DISPLAYED
C-15 [E222] SHORT CIRCUIT IN LS-EPC SOLENOID SYSTEM IS DISPLAYED
C-16 [E223] DISCONNECTION IN LS-EPC SOLENOID SYSTEM IS DISPLAYED
C-17 [E224] ABNORMALITY IN FRONT PUMP PRESSURE SENSOR SYSTEM IS DISPLAYED
C-18 [E225] ABNORMALITY IN REAR PUMP PRESSURE SENSOR SYSTEM IS DISPLAYED
C-19 [E226] ABNORMALITY IN PRESSURE SENSOR POWER SOURCE IS DISPLAYED
C-20 [E227] ABNORMALITY IN ENGINE SPEED SENSOR SYSTEM IS DISPLAYED
C-21 ABNORMALITY IN MACHINE PUSH-UP SOLENOID SYSTEM (NO SERVICE CODE DISPLAYED)
TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER (INPUT SIGNAL SYSTEM) (F MODE)
ELECTRICAL CIRCUIT DIAGRAM FOR F MODE
F-1 BIT PATTERN 20-(1) SWING OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-2 BIT PATTERN 20-(2) TRAVEL OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-3 BIT PATTERN 20-(3) BOOM LOWER OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-4 BIT PATTERN 20-(4) BOOM RAISE OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-5 BIT PATTERN 20-(5) ARM IN OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-6 BIT PATTERN 20-(6) ARM OUT OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-7 BIT PATTERN 21-(1) BUCKET CURL OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-8 BIT PATTERN 21-(2) BUCKET DUMP OIL PRESSURE SWITCH DOES NOT LIGHT UP
F-9 BIT PATTERN 21-(3) SWING LOCK SWITCH DOES NOT LIGHT UP
F-10 BIT PATTERN 22-(5) KEROSENE MODE CONNECTION DOES NOT LIGHT UP
F-11 BIT PATTERN 22-(6) L. H. KNOB SWITCH DOES NOT LIGHT UP
TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)
PUMP MERGE/DIVIDER LOGIC, LS SELECT LOGIC, SOLENOID ACTUATION TABLE
TABLE OF FAILURE MODES AND CAUSES
H-1 SPEEDS OF ALL WORK EQUIPMENT, SWING, TRAVEL 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 (WHEN PPC SHUTTLE VALVE IS CAUSE)
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, BUCKET)
H-12 EXCESSIVE TIME LAG (ENGINE AT LOW IDLING)
H-13 OTHER EQUIPMENT MOVES WHEN SINGLE CIRCUIT IS RELIEVED
H-14 IN L/O, F/O MODES, WORK EQUIPMENT SPEED IS FASTER THAN SPECIFIED SPEED
H-15 DEFECTIVE ACTUATION OF MACHINE PUSH-UP FUNCTION
H-16 IN COMPOUND OPERATIONS, WORK EQUIPMENT WITH LARGER LOAD IS SLOW
H-17 IN SWING + BOOM RAISE, BOOM RAISE IS SLOW
H-18 IN SWING + ARM, ARM IS SLOW
H-19 IN SWING + TRAVEL, TRAVEL SPEED DROPS EXCESSIVELY
H-20 TRAVEL DEVIATION
H-21 TRAVEL SPEED IS SLOW
H-22 STEERING DOES NOT TURN EASILY OR LACKS POWER
H-23 TRAVEL SPEED DOES NOT SWITCH OR IS FASTER THAN SET SPEED
H-24 TRAVEL DOES NOT MOVE (ONE SIDE ONLY)
H-25 DOES NOT SWING
H-26 SWING ACCELERATION IS POOR OR SWING SPEED IS SLOW
H-27 EXCESSIVE OVERRUN WHEN STOPPING SWING
H-28 EXCESSIVE SHOCK WHEN STOPPING SWING (ONE DIRECTION ONLY)
H-29 EXCESSIVE ABNORMAL NOISE WHEN STOPPING SWING
H-30 EXCESSIVE HYDRAULIC DRIFT OF SWING
H-31 SWING SPEED IS FASTER THAN SPECIFIED SPEED
TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M MODE)
ACTION TAKEN BY MONITOR PANEL WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE
ELECTRICAL CIRCUIT DIAGRAM FOR M MODE SYSTEM
M-1 [E101] ABNORMALITY IN ERROR DATA IS DISPLAYED.[E102] ERROR IN CLOCK DATA IS DISPLAYED
M-2 [E103] SHORT CIRCUIT IN BUZZER OUTPUT OR CONTACT OF 24V WIRING HARNESS WITH BUZZER DRIVE HARNESS IS DISPLAYED
M-3 [E104] AIR CLEANER CLOGGING DETECTED IS DISPLAYED
M-4 [E106] DROP IN ENGINE OIL PRESSURE HI PRESSURE DETECTED IS DISPLAYED
M-5 [E108] ENGINE WATER TEMPERATURE 105℃ DETECTED IS DISPLAYED
M-6 WHEN STARTING SWITCH IS TURNED ON, NONE OF LAMPS ON MONITOR PANEL LIGHT UP FOR 3 SECONDS
M-7 WHEN STARTING SWITCH IS TURNED ON, MONITOR PANEL LAMPS ALL STAY LIGHTED UP AND DO NOT GO OUT
M-8 WHEN STARTING SWITCH IS TURNED ON, ITEMS LIGHTED UP ON MONITOR PANEL ARE DIFFERENT FROM ACTUAL MACHINE (MODEL)
M-9 WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), BASIC CHECK ITEMS FLASHES
M-10 PREHEATING IS NOT BEING USED BUT PREHEATING MONITOR LIGHTS UP
M-11 WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED, BASIC CHECK ITEMS FLASH
M-12 WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), CAUTION ITEMS, EMERGENCY ITEMS FLASH (BATTERY,ENGINE OIL PRESSURE LAMPS DO NOT LIGHT UP)
M-13 WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED, CAUTION ITEMS, EMERGENCY STOP ITEMS FLASH (WHEN THERE IS NO ABNORMALITY IN ENGINE OR ITEMS TO CHECK BEFORE TROUBLESHOOTING)
M-14 WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPER), BUZZER DOES NOT SOUND FOR 1 SECOND.CAUTION ITEM FLASHES BUT BUZZER DOES NOT SOUND
M-15 NO ABNORMALITY IS DISPLAYED ON MONITOR BUT BUZZER SOUNDS
M-16 NIGHT LIGHTING ON MONITOR PANEL DOES NOT LIGHT UP (LIQUID CRYSTAL DISPLAY IS NORMAL)
M-17 COOLANT TEMPERATURE GAUGE DOES NOT RISE
M-18 COOLANT TEMPERATURE GAUGE DOES NOT GIVE ANY DISPLAY (NONE OF GAUGE LAMPS LIGHT UP DURING OPERATION)
M-19 FUEL LEVEL GAUGE ALWAYS DISPLAYS FULL
M-20 FUEL LEVEL GAUGE DOES NOT GIVE DISPLAY
M-21 SWING LOCK SWITCH IS TURNED ON (LOCK) BUT SWING LOCK MONITOR DOES NOT LIGHT UP
M-22 SWING PROLIX SWITCH IS TURNED ON (PROLIX), BUT SWING LOCK MONITOR DOES NOT FLASH
M-23 SERVICE METER DOES NOT ADVANCE WHILE ENGINE IS RUNNING
M-24 WHEN STARING SWITCH IS AT OFF AND TIME SWITCH IS PRESSED, TIME AND SERVICE METER ARE NOT DISPLAYED
M-25 DEFECTIVE FUEL LEVEL SENSOR SYSTEM
M-26 DEFECTIVE COOLANT TEMPERATURE SENSOR SYSTEM
M-27 DEFECTIVE ENGINE OIL LEVEL SENSOR SYSTEM
M-28 DEFECTIVE COOLANT LEVEL SENSOR SYSTEM
M-29 DEFECTIVE HYDRAULIC OIL LEVEL SENSOR SYSTEM
M-30 WIPER DOES NOT WORK OR SWITCH IS NOT BEING USED BUT WIPER IS ACTUATED
M-31 ELECTRIC GREASE GUN DOES NOT WORK

30 DISASSEMBLY AND ASSEMBLY
METHOD OF USING MANUAL
PRECAUTIONS WHEN CARRYING OUT OPERATION
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
STARTING MOTOR ASSEMBLY
REMOVAL AND INSTALLATION
ALTERNATOR ASSEMBLY
REMOVAL AND INSTALLATION
ENGINE OIL COOLER ASSEMBLY
REMOVAL AND INSTALLATION
FUEL INJECTION PUMP ASSEMBLY
REMOVAL
INSTALLATION
WATER PUMP ASSEMBLY
REMOVAL AND INSTALLATION
NOZZLE HOLDER ASSEMBLY
REMOVAL AND INSTALLATION
TURBOCHARGER ASSEMBLY
REMOVAL AND INSTALLATION
THERMOSTAT ASSEMBLY
REMOVAL AND INSTALLATION
ENGINE FRONT SEAL
REMOVAL
INSTALLATION
GOVERNOR MOTOR ASSEMBLY
REMOVAL AND INSTALLATION
CYLINDER HEAD ASSEMBLY
REMOVAL
INSTALLATION
AFTERCOOLER ASSEMBLY
REMOVAL AND INSTALLATION
HYDRAULIC COOLER ASSEMBLY
REMOVAL AND INSTALLATION
RADIATOR, HYDRAULIC COOLER ASSEMBLY
REMOVAL
INSTALLATION
ENGINE, MAIN PUMP ASSEMBLY
REMOVAL
INSTALLATION
DAMPER ASSEMBLY
REMOVAL AND INSTALLATION
FUEL TANK ASSEMBLY
REMOVAL AND INSTALLATION
CENTER SWIVEL JOINT ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY AND ASSEMBLY
FINAL DRIVE ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
TRAVEL MOTOR ASSEMBLY
DISASSEMBLY
ASSEMBLY
SPROCKET
REMOVAL AND INSTALLATION
SWING MOTOR ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
SWING MACHINERY ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
REVOLVING FRAME ASSEMBLY
REMOVAL
INSTALLATION
SWING CIRCLE ASSEMBLY
REMOVAL AND INSTALLATION
IDLER, RECOIL SPRING ASSEMBLY
REMOVAL AND INSTALLATION
IDLER ASSEMBLY
DISASSEMBLY
ASSEMBLY
RECOIL SPRING ASSEMBLY
DISASSEMBLY
ASSEMBLY
TRACK ROLLER ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
CARRIER ROLLER ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
TRACK SHOE ASSEMBLY
REMOVAL AND INSTALLATION
HYDRAULIC TANK ASSEMBLY
REMOVAL
INSTALLATION
CONTROL PUMP ASSEMBLY
REMOVAL AND INSTALLATION
MAIN PUMP ASSEMBLY
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
MAIN PUMP INPUT SHAFT OIL SEAL
REMOVAL AND INSTALLATION
CONTROL VALVE ASSEMBLY
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
PUMP MERGE/DIVIDER VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY
PRESSURE COMPENSATION VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY
SERVO VALVE ASSEMBLY FOR FRONT PUMP
REMOVAL AND INSTALLATION
SERVO VALVE ASSEMBLY FOR REAR PUMP
REMOVAL AND INSTALLATION
LS-EPC SOLENOID VALVE ASSEMBLY
REMOVAL AND INSTALLATION
SOLENOID VALVE ASSEMBLY
REMOVAL AND INSTALLATION
WORK EQUIPMENT PPC VALVE ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
TRAVEL PPC VALVE ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY
ASSEMBLY
PPC SHUTTLE VALVE ASSEMBLY
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
BOOM LOCK VALVE ASSEMBLY
REMOVAL AND INSTALLATION
DISASSEMBLY AND ASSEMBLY
BOOM CYLINDER ASSEMBLY
REMOVAL
INSTALLATION
ARM CYLINDER ASSEMBLY
REMOVAL
INSTALLATION
BUCKET CYLINDER ASSEMBLY
REMOVAL
INSTALLATION
HYDRAULIC CYLINDER ASSEMBLY
DISASSEMBLY
ASSEMBLY
WORK EQUIPMENT ASSEMBLY
REMOVAL
INSTALLATION
BUCKET ASSEMBLY
REMOVAL
INSTALLATION
ARM ASSEMBLY
REMOVAL
INSTALLATION
BUCKET, ARM ASSEMBLY
REMOVAL
INSTALLATION
BOOM ASSEMBLY
REMOVAL
INSTALLATION
OPERATOR'S CAB ASSEMBLY
REMOVAL
INSTALLATION
COUNTERWEIGHT ASSEMBLY
REMOVAL AND INSTALLATION
AIR CONDITIONER COMPRESSOR ASSEMBLY
REMOVAL AND INSTALLATION
CONDENSER ASSEMBLY
REMOVAL AND INSTALLATION
AIR CONDITIONER UNIT ASSEMBLY
REMOVAL
INSTALLATION
GOVERNOR, PUMP CONTROLLER ASSEMBLY
REMOVAL AND INSTALLATION
MONITOR PANEL ASSEMBLY
REMOVAL AND INSTALLATION
CONTROL STAND CASE
REMOVAL
INSTALLATION

40 MAINTENANCE STANDARD
ENGINE MOUNT
SWING MACHINERY
SWING CIRCLE
FINAL DRIVE
TRACK FRAME AND RECOIL SPRING
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK
HYDRAULIC PUMP
CONTROL PUMP AND RELIEF VALVE
CONTROL VALVE
SUCTION-SAFETY VALVE
SWING MOTOR
TRAVEL MOTOR
WORK EQUIPMENT, SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
PPC SHUTTLE VALVE, TRAVEL JUNCTION VALVE
EPC SOLENOID VALVE
CENTER SWIVEL JOINT
BOOM HOLDING VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT

90 OTHERS
HYDRAULIC PIPING DIAGRAM (10-12)
HYDRAULIC CIRCUIT DIAGRAM (10-13)
CONTROL VALVE
10-SPOOL VALVE (10-38)
9-SPOOL VALVE (10-44)
8-SPOOL VALVE (10-45)
7-SPOOL VALVE (10-46)
OPERATION FOR EACH FUNCTION OF CLSS (10-52)
OPERATION OF WHOLE CLSS SYSTEM
1.WHEN ALL WORK EQUIPMENT IS AT NEUTRAL (10-72)
2.PUMP FLOW MERGED, BUCKET CURL OPERATED INDEPENDENTLY (10-74)
3.PUMP FLOW MERGED, BOOM RAISE OPERATED INDEPENDENTLY (10-76)
4.PUMP FLOW MERGED, ARM IN OPERATED INDEPENDENTLY (10-78)
5.PUMP FLOW MERGED, ARM OUT OPERATED INDEPENDENTLY (10-80)
6.PUMP FLOW DIVIDED, TRAVEL OPERATED INDEPENDENTLY (10-82)
7.PUMP FLOW MERGED, ARM IN + BOOM RAISE OPERATED SIMULTANEOUSLY (10-84)
8.PUMP FLOW MERGED, SWING + BOOM RAISE OPERATED SIMULTANEOUSLY (10-86)
9.PUMP FLOW DIVIDED (PUMP PRESSURE:19.6 MPa (200kg/cm2) OR ABOVE), TRAVEL + BOOM RAISE OPERATED SIMULTANEOUSLY (10-88)
10.PUMP FLOW DIVIDED (PUMP PRESSURE:19.6 MPa (200 kg/cm2) OR ABOVE), TRAVEL + ARM IN OPERATED SIMULTANEOUSLY (10-90)
ACTUAL ELECTRIC WIRING DIAGRAM (10-138)
ACTUAL ELECTRIC WIRING DIAGRAM (10-139)
ELECTRIC CIRCUIT DIAGRAM (10-140)
ELECTRIC CIRCUIT DIAGRAM (10-141)
CONNECTOR ARRANGEMENT DIAGRAM (20-116)
CONTROL VALVE (40-20)

-