This complete service repair workshop manual PDF download for the Komatsu PC300-7, PC300LC-7, PC350-7, PC350LC-7 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 :
PC300-7 - 40001 and up
PC300LC-7 - 40001 and up
PC350-7 - 20001 and up
PC350LC-7 - 20001 and up
Engine : SAA6D114E
TABLE OF CONTENTS :
- GENERAL
- STRUCTURE AND FUNCTION
- MAINTENANCE STANDARD
- TESTING AND ADJUSTING
- DISASSEMBLY AND ASSEMBLY
- OTHERS
MANUAL SPECIFICATION :
File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : SEBM025808
Total Pages : 776
• PC300, 300LC, PC350, 350LC-7 mount the SAA6D114E engine.
For details of the engine, see the 114 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.
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01 GENERAL
SPECIFICATION DIMENSION DRAWINGS
SPECIFICATIONS
PC300-7,PC300LC-7
PC350-7,PC350LC-7
WEIGHT TABLE
PC300-7,PC300LC-7
PC350-7,PC350LC-7
FUEL, COOLANT, AND LUBRICANTS
10 STRUCTURE, FUNCTION, AND MAINTENANCE STANDARD
ENGINE RELATED PARTS
RADIATOR・OIL COOLER・AFTERCOOLER
POWER TRAIN
FINAL DRIVE
SPROCKET
SWING MACHINERY
SWING CIRCLE
TRACK FRAME・RECOIL SPRING
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK SHOE
HYDRAULIC EQUIPMENT LAYOUT DRAWING
HYDRAULIC TANK
HYDRAULIC PUMP
VARIABLE VOLUME VALVE
CONTROL VALVE
CLSS
SELF PRESSURE REDUCING VALVE
SWING MOTOR
REVERSE PREVENTION VALVE
CENTER SWIVEL JOINT
TRAVEL MOTOR
TRAVEL JUNCTION VALVE
TRAVEL PPC SHUTTLE VALVE
VALVE CONTROL
WORK EQUIPMENT・SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
SOLENOID VALVE
PPC ACCUMULATOR
RETURN OIL FILTER
BOOM HYDRAULIC DRIFT PREVENTION VALVE
QUICK RETURN VALVE
LIFT CHECK VALVE
ATTACHMENT CIRCUIT SELECTOR VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT
AIR CONDITIONER
ENGINE CONTROL
ELECTRONIC CONTROL SYSTEM
MULTI MONITOR SYSTEM
7-SEGMENT MONITOR SYSTEM
SENSOR
20 TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
TESTING AND ADJUSTING
TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING
INSPECTION AND ADJUSTMENT OF ENGINE RPM
MEASUREMENT OF AIR BOOST PRESSURE
MEASUREMENT OF EXHAUST GAS COLOR
ADJUSTMENT OF VALVE CLEARANCE
MEASUREMENT OF COMPRESSION PRESSURE
MEASUREMENT OF BLOW-BY PRESSURE
INSPECTION AND ADJUSTMENT OF FUEL INJECTION TIMING
MEASUREMENT OF ENGINE OIL PRESSURE
ADJUSTMENT OF ENGINE SPEED SENSOR
INSPECTION AND ADJUSTMENT OF AIR COMPRESSOR BELT TENSION
EMERGENT ESCAPE FROM FAILURE IN ENGINE CONTROL SYSTEM
MEASUREMENT OF CLEARANCE IN SWING CIRCLE BEARINGS
INSPECTION AND ADJUSTMENT OF TRACK SHOE TENSION
INSPECTION OF WEAR ON SPROCKET
INSPECTION AND ADJUSTMENT OF HYDRAULIC OIL PRESSURE IN HYDRAULIC CIRCUIT FOR WORK EQUIPMENT, SWING AND TRAVEL
INSPECTION AND ADJUSTMENT OF CONTROL CIRCUIT OIL PRESSURE
INSPECTION AND ADJUSTMENT OF PUMP PC CONTROL CIRCUIT OIL PRESSURE
INSPECTION AND ADJUSTMENT OF PUMP LS CONTROL CIRCUIT OIL PRESSURE
MEASUREMENT OF SOLENOID VALVE OUTPUT PRESSURE
MEASUREMENT OF PPC VALVE OUTPUT PRESSURE
ADJUSTMENT OF WORK EQUIPMENT AND SWING PPC VALVE
INSPECTION OF LOCATIONS OF HYDRAULIC DRIFT OF WORK EQUIPMENT
RELEASE OF REMAINING PRESSURE IN HYDRAULIC CIRCUIT
MEASUREMENT OF OIL LEAKAGE AMOUNT
AIR BLEEDING OF VARIOUS PARTS
INSPECTION PROCEDURES FOR DIODE
SPECIAL FUNCTION OF MULTI-MONITOR PANEL
SPECIAL FUNCTIONS OF 7-SEGMENTS MONITOR PANEL
PREPARATIONS FOR TROUBLESHOOTING ELECTRICAL SYSTEM
TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
CHECKS BEFORE TROUBLESHOOTING
CLASSIFICATION AND STEPS FOR TROUBLESHOOTING
CONNECTOR LOCATION CHART AND ELECTRICAL CIRCUIT DIAGRAM BY SYSTEM
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
TROUBLESHOOTING WHEN SERVICE CODE "ELECTRICAL SYSTEM" AND FAILURE CODE "MECHANICAL SYSTEM" ARE INDICATED
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE
SERVICE CODE IN ELECTRICAL SYSTEM [E101] (ABNORMAL DATA IN ERROR HISTORY)
SERVICE CODE IN ELECTRICAL SYSTEM [E112] (SHORT-CIRCUITING IN NORMAL ROTATION SYSTEM OF WINDSHIELD WIPER MOTOR DRIVE)
SERVICE CODE IN ELECTRICAL SYSTEM [E113] (SHORT-CIRCUITING IN REVERSE ROTATION SYSTEM OF WINDSHIELD WIPER MOTOR DRIVE)
SERVICE CODE IN ELECTRICAL SYSTEM [E114] (SHORT-CIRCUITING IN WINDOW WASHER DRIVE SYSTEM)
SERVICE CODE IN ELECTRICAL SYSTEM [E115] (ABNORMAL WINDSHIELD WIPER MOTION)
SERVICE CODE IN ELECTRICAL SYSTEM [E116] (ABNORMALITY IN RETRACTING WINDSHIELD WIPER)
SERVICE CODE IN ELECTRICAL SYSTEM [E201] (SHORT-CIRCUITING IN TRAVEL INTERLOCKING SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E203] (SHORT-CIRCUITING IN SWING AND PARKING BRAKE SOLENOID-IN GOVERNOR・PUMP CONTROLLER SYSTEM)
SERVICE CODE IN ELECTRICAL SYSTEM [E204] (SHORT-CIRCUITING IN MERGE/DIVIDE SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E205] (SHORT-CIRCUITING IN 2-STAGE RELIEF SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E206] (SHORT-CIRCUITING IN TRAVEL SPEED SHIFTING SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E211] (DISCONNECTION IN TRAVEL INTERLOCKING SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E213] (DISCONNECTION IN SWING PARKING BRAKE SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E214] (DISCONNECTION OF MERGE/DIVIDE SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E215] (DISCONNECTION IN 2-STAGE RELIEF SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E216] (DISCONNECTION IN TRAVEL SPEED SHIFTING SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E217] (ABNORMALITY IN INPUTTING MODEL CODE)
SERVICE CODE IN ELECTRICAL SYSTEM [E218] (DISCONNECTION OF S-NET SIGNAL)
SERVICE CODE IN ELECTRICAL SYSTEM [E222] (SHORT-CIRCUITING IN LS-EPC SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E223] (DISCONNECTION IN LS-EPC SOLENOID SYSTEM)
SERVICE CODE IN ELECTRICAL SYSTEM [E224] (ABNORMALITY IN F PUMP PRESSURE SENSOR)
SERVICE CODE IN ELECTRICAL SYSTEM [E225] (ABNORMALITY IN R PUMP PRESSURE SENSOR)
SERVICE CODE IN ELECTRICAL SYSTEM [E226] (ABNORMALITY IN PRESSURE SENSOR POWER SOURCE)
SERVICE CODE IN ELECTRICAL SYSTEM [E227] (ABNORMALITY IN ENGINE ROTATION SENSOR IN GOVERNOR・PUMP CONTROLLER SYSTEM)
SERVICE CODE IN ELECTRICAL SYSTEM [E228] (SHORT-CIRCUITING IN ATTACHMENT RETURN SWITCHING RELAY)
SERVICE CODE IN ELECTRICAL SYSTEM [E232] (SHORT-CIRCUITING IN PC-EPC SOLENOID)
SERVICE CODE IN ELECTRICAL SYSTEM [E233] (DISCONNECTION IN PC-EPC SOLENOID SYSTEM)
SERVICE CODE IN ELECTRICAL SYSTEM [E238] (DISCONNECTION IN ATTACHMENT RETURN SWITCHING RELAY)
SERVICE CODE IN ELECTRICAL EQUIPMENT [E245] (SHORT-CIRCUITING IN ATTACHMENT OIL FLOW RATE ADJUSTING EPC)(MULTI-MONITOR ONLY)
SERVICE CODE IN ELECTRICAL SYSTEM [E246] (DISCONNECTION IN ATTACHMENT OIL FLOW RATE ADJUSTING EPC)(MULTI-MONITOR ONLY)
SERVICE CODE IN ELECTRICAL SYSTEM [E256] (INCORRECT NONVOLATILE MEMORY DATA)
SERVICE CODE IN ELECTRICAL SYSTEM [E304] (SHORT CIRCUIT OF ENGINE STOP SOLENOID RELAY)
SERVICE CODE IN ELECTRICAL SYSTEM [E306] (ABNORMALITY IN GOVERNOR POTENTIOMETER)
SERVICE CODE IN ELECTRICAL SYSTEM [E308] (ABNORMALITY IN FUEL DIAL)
SERVICE CODE IN ELECTRICAL SYSTEM [E314] (DISCONNECTION OF ENGINE STOP SOLENOID RELAY)
SERVICE CODE IN ELECTRICAL SYSTEM [E315] (SHORT-CIRCUITING IN BATTERY RELAY)
SERVICE CODE IN ELECTRICAL SYSTEM [E316] (STEP-OUT IN GOVERNOR MOTOR)
SERVICE CODE IN ELECTRICAL SYSTEM [E317] (DISCONNECTION IN GOVERNOR MOTOR PHASE A AND B)
SERVICE CODE IN ELECTRICAL SYSTEM [E318] (SHORT-CIRCUITING IN GOVERNOR MOTOR PHASE A AND PHASE B)
FAILURE CODE IN MECHANICAL SYSTEM [A000N1] (OUT-OF-RATE ENGINE ROTATION AT HIGH IDLING)
FAILURE CODE IN MECHANICAL SYSTEM [A000N2] (OUT-OF-RATE ENGINE ROTATION AT LOW IDLING)
FAILURE CODE IN MECHANICAL SYSTEM [AA10NX] (AIR CLEANER CLOGGING)
FAILURE CODE IN MECHANICAL SYSTEM [AB00KE] (ABNORMALLY LOWERED CHARGING VOLTAGE)
FAILURE CODE IN MECHANICAL SYSTEM [[email protected]] (ABNORMALLY LOWERED ENGINE OIL PRESSURE)
FAILURE CODE IN MECHANICAL SYSTEM [[email protected]] (ABNORMALLY LOWERED ENGINE OIL LEVEL)
FAILURE CODE IN MECHANICAL SYSTEM [[email protected]] (ENGINE COOLING WATER OVERHEATING)
FAILURE CODE IN MECHANICAL SYSTEM [[email protected]] (ABNORMALLY LOWERED RADIATOR WATER LEVEL)
FAILURE CODE IN MECHANICAL SYSTEM [[email protected]] (HYDRAULIC OIL OVERHEATING)
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE)
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE
E-1 ENGINE DOES NOT START
E-2 ENGINE STOPS WHILE IN OPERATION
E-3 ENGINE SPEED IS IRREGULAR, OR THERE IS HUNTING
E-4 ENGINE DOES NOT STOP
E-5 AUTO-DECELERATOR DOES NOT WORK
E-6 AUTO ENGINE WARM-UP DEVICE DOES NOT WORK
E-7 PREHEATER DOES NOT WORK
E-8 ALL WORK EQUIPMENT, SWING AND TRAVEL DO NOT MOVE
E-9 ONE-TOUCH POWER MAX. SWITCH DOES NOT WORK
E-10 NO DISPLAY IN MONITOR PANEL AT ALL
E-11 PART OF DISPLAY ON MONITOR PANEL IS MISSING
E-12 MONITOR PANEL DISPLAYS CONTENTS IRRELEVANT TO THE MODEL
E-13 FUEL LEVEL MONITOR RED LAMP LIGHTS UP WHILE ENGINE IS RUNNING
E-14 ENGINE COOLING WATER TEMPERATURE GAUGE DOES NOT INDICATE CORRECTLY
E-15 HYDRAULIC OIL TEMPERATURE GAUGE DOES NOT DISPLAY CORRECTLY
E-16 FUEL GAUGE DOES NOT DISPLAY CORRECTLY
E-17 SWING LOCK MONITOR DOES NOT DISPLAY CORRECTLY
E-18 WHEN THE MONITOR SWITCH IS OPERATED, NO DISPLAY APPEARS
E-19 WINDSHIELD WIPER DOES NOT WORK
E-20 ALARMING BUZZER CANNOT BE CANCELLED
E-21 "BOOM RAISE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-22 "BOOM LOWER" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-23 "ARM DIGGING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-24 "ARM DUMPING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-25 "BUCKET DIGGING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-26 "BUCKET DUMPING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-27 "SWING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-28 "TRAVEL" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-29 "TRAVEL DIFFERENTIAL PRESSURE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-30 "SERVICE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION
E-31 AIR CONDITIONER DOES NOT WORK
E-32 TRAVEL ALARM DOES NOT SOUND
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H-MODE)
SYSTEM CHART FOR HYDRAULIC AND MECHANICAL SYSTEMS
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE
H-1 ALL WORK EQUIPMENT LACK POWER, OR TRAVEL AND SWING SPEEDS ARE SLOW
H-2 ENGINE SPEED SHARPLY DROPS OR ENGINE STALLS
H-3 NO WORK EQUIPMENT, TRAVEL OR SWING MOVE
H-4 ABNORMAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP
H-5 AUTO-DECELERATOR DOES NOT WORK
H-6 FINE CONTROL MODE DOES NOT FUNCTION
H-7 BOOM MOVES SLOWLY OR LACKS POWER
H-8 ARM MOVES SLOWLY OR LACKS POWER
H-9 BUCKET MOVES SLOWLY OR LACKS POWER
H-10 WORK EQUIPMENT DOES NOT MOVE IN ITS SINGLE OPERATION
H-11 WORK EQUIPMENT HAS A BIT TOO FAST HYDRAULIC DRIFT
H-12 WORK EQUIPMENT HAS BIG TIME LAG
H-13 OTHER WORK EQUIPMENT MOVES WHEN RELIEVING SINGLE CIRCUIT
H-14 ONE-TOUCH POWER MAX. SWITCH DOES NOT OPERATE
H-15 IN COMPOUND OPERATION, WORK EQUIPMENT WITH LARGER LOAD MOVES SLOWLY
H-16 IN SWING + BOOM RAISE OPERATION, BOOM MOVES SLOWLY
H-17 IN SWING + TRAVEL, TRAVEL SPEED DROPS SHARPLY
H-18 MACHINE SWERVES IN TRAVEL
H-19 MACHINE TRAVELS SLOWLY
H-20 MACHINE CANNOT BE EASILY STEERED OR LACKS POWER
H-21 TRAVEL SPEED DOES NOT SHIFT, OR IT IS TOO SLOW OR FAST
H-22 TRACK SHOE DOES NOT TURN (ON ONE SIDE ONLY)
H-23 MACHINE DOES NOT SWING
H-24 SWING ACCELERATION IS POOR, OR SWING SPEED IS SLOW
H-25 EXCESSIVE OVERRUN WHEN STOPPING SWING
H-26 THERE IS BIG SHOCK WHEN STOPPING SWING
H-27 THERE IS BIG ABNORMAL NOISE CAUSED WHEN STOPPING SWING
H-28 SWING NATURAL DRIFT IS TOO BIG
TROUBLESHOOTING OF ENGINE (S-MODE)
METHOD OF USING TROUBLESHOOTING CHARTS
S-1 STARTING PERFORMACE IS POOR (STARTING ALWAYS TAKES TIME)
S-2 ENGINE DOES NOT START
S-3 ENGINE DOES NOT PICK UP SMOTHLY (FPLLOW-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 CINSUMPTION 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
30 DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
REMOVAL AND INSTALLATION OF ASSEMBLIES
DISASSEMBLY AND ASSEMBLY OF ASSEMBLIES
PRECAUTIONS WHEN PERFORMING OPERATION
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
STARTING MOTOR ASSEMBLY
REMOVAL
INSTALLATION
FUEL INJECTION PUMP ASSEMBLY
SPECIAL TOOLS
REMOVAL
INSTALLATION
ENGINE FRONT SEAL
REMOVAL
INSTALLATION
ENGINE REAR SEAL
SPECIAL TOOLS
REMOVAL
INSTALLATION
CYLINDER HEAD ASSEMBLY
SPECIAL TOOLS
REMOVAL
INSTALLATION
RADIATOR ASSEMBLY
REMOVAL
INSTALLATION
HYDRAULIC OIL COOLER ASSEMBLY
REMOVAL
INSTALLATION
ENGINE AND HYDRAULIC PUMP ASSEMBLIES
SPECIAL TOOLS
REMOVAL
INSTALLATION
FINAL DRIVE ASSEMBLY
REMOVAL
INSTALLATION
DISASSEMBLY AND ASSEMBLY
SPECIAL TOOLS
DISASSEMBLY
ASSEMBLY
SKETCHES OF SPECIAL TOOLS
SWING MOTOR,SWING MACHINERY ASSEMBLY
REMOVAL
INSTALLATION
DISASSEMBLY AND ASSEMBLY
SPECIAL TOOLS
DISASSEMBLY
ASSEMBLY
SWING MOTOR,SWING MACHINERY ASSEMBLY
SPECIAL TOOLS
DISASSEMBLY
ASSEMBLY
CARRIER ROLLER ASSEMBLY
SPECIAL TOOLS
ASSEMBLY
TRACK ROLLER ASSEMBLY
SPECIAL TOOLS
ASSEMBLY
IDLER ASSEMBLY
SPECIAL TOOLS
DISASSEMBLY
ASSEMBLY
RECOIL SPRING ASSEMBLY
SPECIAL TOOLS
DISASSEMBLY
ASSEMBLY
SPROCKET
REMOVAL
INSTALLATION
TRACK SHOE ASSEMBLY
SPECIAL TOOLS
EXPANSION OF TRACK SHOE
ASSEMBLY
SWING CIRCLE ASSEMBLY
REMOVAL
INSTALLATION
REVOLVING FRAME ASSEMBLY
REMOVAL
INSTALLATION
CENTER SWIVEL JOINT ASSEMBLY
REMOVAL
INSTALLATION
DISASSEMBLY AND ASSEMBLY
SPECIAL TOOLS
DISASSEMBLY
ASSEMBLY
HYDRAULIC TANK ASSEMBLY
REMOVAL
INSTALLATION
CONTROL VALVE ASSEMBLY
REMOVAL
INSTALLATION
DISASSEMBLY AND ASSEMBLY
SPECIAL TOOLS
ASSEMBLY
HYDRAULIC PUMP ASSEMBLY
SPECIAL TOOLS
REMOVAL
INSTALLATION
OIL SEAL IN HYDRAULIC PUMP INPUT SHAFT
REMOVAL
INSTALLATION
WORK EQUIPMENT PPC VALVE ASSEMBLY
ASSEMBLY
TRAVEL PPC VALVE ASSEMBLY
ASSEMBLY
HYDRAULIC CYLINDER ASSEMBLY
SPECIAL TOOLS
DISASSEMBLY
ASSEMBLY
WORK EQUIPMENT ASSEMBLY
SPECIAL TOOLS
REMOVAL
INSTALLATION
AIR CONDITIONER UNIT ASSEMBLY
SPECIAL TOOLS
REMOVAL
INSTALLATION
COUNTERWEIGHT ASSEMBLY
REMOVAL
INSTALLATION
OPERATOR'S CAB ASSEMBLY
REMOVAL
INSTALLATION
OPERATOR'S CAB GLASS (STUCK GLASS)
SPECIAL TOOLS
REMOVAL
INSTALLATION
FRONT WINDOW ASSEMBLY
REMOVAL
INSTALLATION
MONITOR ASSEMBLY
REMOVAL
INSTALLATION
GOVERNOR PUMP CONTROLLER ASSEMBLY
REMOVAL
INSTALLATION
90 OTHERS
HYDRAULIC CIRCUIT DIAGRAM
PC300-7, PC300LC-7: SERIAL NO.40001-45000 PC300-7, PC350LC-7: SERIAL NO.20001-25000
ELECTRICAL CIRCUIT DIAGRAM (1/4)
ELECTRICAL CIRCUIT DIAGRAM (2/4)
ELECTRICAL CIRCUIT DIAGRAM (3/4)
ELECTRICAL CIRCUIT DIAGRAM (4/4)
PC300-7, PC300LC-7: SERIAL NO.45001 AND UP PC300-7, PC350LC-7: SERIAL NO.25001 AND UP
ELECTRICAL CIRCUIT DIAGRAM (1/4)
ELECTRICAL CIRCUIT DIAGRAM (2/4)
ELECTRICAL CIRCUIT DIAGRAM (3/4)
ELECTRICAL CIRCUIT DIAGRAM (4/4)
Komatsu PC300-7, PC300LC-7, PC350-7, PC350LC-7 Hydraulic Excavator Shop Manual - SEBM025808.pdf