Komatsu PC750LC-7K, PC750SE-7K Hydraulic Excavator Operation & Maintenance Manual
341 pages · Publication UEAM002901
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- Models
- PC750LC-7K, PC750SE-7K
- Serial coverage
- PC750LC-7K K40001 and up, PC750SE-7K K40001 and up
- Manual type
- Operation & Maintenance Manual
- Pages
- 341
- Publication
- UEAM002901
- Condition
- Brand new
What's inside
From the manual's own table of contents: 311 sections, 312 entries. See sample pages (PDF, 432 KB)
FOREWORD
SAFETY INFORMATION
NOISE
VIBRATION
BREAKING-IN THE NEW MACHINE
INTRODUCTION
DIRECTIONS OF MACHINE
PRODUCT INFORMATION
MACHINE SERIAL NUMBER PLATE AND ITS LOCATION
ENGINE SERIAL NUMBER PLATE AND ITS LOCATION
SERVICE METER LOCATION1 topic
- TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR
MACHINE SERIAL PLATE
SAFETY LABELS
LOCATION OF SAFETY LABELS
SAFETY MACHINE OPERATION
STARTING ENGINE
OPERATION
TRANSPORTATION
BATTERY
TOWING
LIFTING OBJECTS WITH BUCKET
SAFETY MAINTENANCE INFORMATION
MACHINE VIEW ILLUSTRATIONS
OVERALL MACHINE VIEW
Show all 311 sections
CONTROLS AND GAUGES
DETAILED CONTROLS AND GAUGES
MONITORING SYSTEM
Basic Operation Of Machine Monitor
Basic Check Monitors
Caution Monitors
Emergency Monitors
Meter Display Portion
Monitor Switches Portion
SWITCHES
CONTROL LEVERS AND PEDALS
SUN ROOF
Opening
Closing
WINDSHIELD
EMERGENCY EXIT FROM OPERATOR'S CAB
DOOR LOCK
CAP WITH LOCK
HOT AND COOL BOX
MAGAZINE BOX
ASHTRAY
AIR CONDITIONER CONTROLS
Air Conditioner Control Panel
Method Of Operation
Use Air Conditioner With Care
Air Conditioner Maintenance
Other Functions
CAB RADIO
Use Radio With Care
AUXILIARY ELECTRIC POWER
24V power source
12V power source
FUSE
CIRCUIT BREAKER
CONTROLLERS
TOOL BOX
GREASE PUMP
Method of Use
Precautions when Using
Supplying Grease
ACCUMULATOR
Releasing Hydraulic Pressure With Accumulator
MACHINE OPERATIONS AND CONTROLS
BEFORE STARTING ENGINE
Walk-Around Checks
Checks Before Starting
Adjustment
Seat Belt
Operations Before Starting Engine
Normal Starting
Starting Engine In Cold Weather
AFTER STARTING ENGINE
Warming-Up Operation
In Cold Weather Areas
STOPPING THE ENGINE
MACHINE OPERATION
Preparations For Moving The Machine Off
Moving Machine Forward
Moving Machine Backward
Stopping Machine
STEERING THE MACHINE
Steering
SWINGING
WORK EQUIPMENT CONTROLS AND OPERATIONS
WORKING MODE
PROHIBITED OPERATIONS
GENERAL OPERATION INFORMATION
TRAVELING ON SLOPES
ESCAPE FROM MUD
Stuck One Side Of Track
Stuck Both Sides Of Tracks
RECOMMENDED APPLICATIONS
Backhoe Work
Ditching Work
Loading Work
BUCKET REPLACEMENT
Replacement
PARKING MACHINE
CHECK AFTER SHUT OFF ENGINE
LOCKING
PRECAUTIONS FOR TRANSPORTATION
LIFTING MACHINE
SHIPPING MACHINE INFORMATION
TRANSPORTATION POSTURE
PROCEDURE FOR INCREASING OR REDUCING TRACK FRAME GAUGE
COLD WEATHER OPERATION
COLD WEATHER OPERATION INFORMATION
Fuel And Lubricants
AFTER DAILY WORK COMPLETION
AFTER COLD WEATHER SEASON
LONG TERM STORAGE
BEFORE STORAGE
DURING STORAGE
AFTER STORAGE
STARTING MACHINE AFTER LONG-TERM STORAGE
TROUBLES AND ACTIONS
RUNNING OUT OF FUEL
PHENOMENA THAT ARE NOT FAILURES
TOWING THE MACHINE
SEVERE JOB CONDITION
DISCHARGED BATTERY
Battery Removal And Installation
Battery Charges
Starting Engine With Booster Cables
OTHER TROUBLE
Electrical System
Chassis
Engine
Electronic Control System
Point Of Contact To Telephone When Error Occurs
MAINTENANCE INFORMATION
LUBRICANTS, COOLANT AND FILTERS
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC
Fuel
Cooling System Coolant
Grease
Carrying out KOWA (Komatsu Oil Wear Analysis)
Oil And Fuel Storage
Filters
ELECTRIC SYSTEM MAINTENANCE
WEAR PARTS
WEAR PARTS LIST
LUBRICANTS, FUEL AND COOLANT SPECIFICATIONS
PROPER SELECTION
TIGHTENING TORQUE SPECIFICATIONS
TIGHTENING TORQUE LIST
SAFETY CRITICAL PARTS
SAFETY CRITICAL PARTS LIST
MAINTENANCE SCHEDULE
MAINTENANCE SCHEDULE CHART
MAINTENANCE PROCEDURE
INITIAL 100 HOURS MAINTENANCE (ONLY AFTER THE FIRST 100 HOURS)
INITIAL 500 HOURS MAINTENANCE (ONLY AFTER THE FIRST 500 HOURS)
WHEN REQUIRED
CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT
CLEAN INSIDE OF COOLING SYSTEM
CHECK AND TIGHTEN TRACK SHOE BOLTS
CHECK AND ADJUST TRACK TENSION
CHECK ELECTRICAL INTAKE AIR HEATER
REPLACE BUCKET TEETH (HORIZONTAL PIN TYPE)
ADJUST BUCKET CLEARANCE
REPLACE OF FAN BELT AND ADJUSTMENT OF AUTO TENSIONER
CHECK WINDOW WASHER FLUID LEVEL, ADD FLUID
CHECK AND ADJUST AIR CONDITIONER
CLEAN LINE FILTER, REMOVE DIRT
BLEEDING AIR FROM HYDRAULIC SYSTEM
METHOD FOR RELEASING INTERNAL PRESSURE IN HYDRAULIC CIRCUIT
CHECK NITROGEN GAS CHARGE PRESSURE IN ACCUMULATOR (control circuit)
CHECK BEFORE STARTING
EVERY 10 HOURS MAINTENANCE
LUBRICATING
EVERY 100 HOURS MAINTENANCE
LUBRICATING SWING CIRCLE
EVERY 250 HOURS MAINTENANCE
CHECK OIL LEVEL IN FINAL DRIVE CASE, ADD OIL
CHECK LEVEL OF BATTERY ELECTROLYTE
CHECK, CLEAN FUEL TANK STRAINER
CHECK AND TIGHTEN TRACK FRAME AND AXLE CONNECTING BOLTS
CHECK ALTERNATOR DRIVE BELT TENSION, ADJUST
CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST
EVERY 500 HOURS MAINTENANCE
REPLACE FUEL FILTER CARTRIDGE
REPLACEMENT OF ADDITIONAL FUEL FILTER CARTRIDGE (IF EQUIPPED)
CHECK SWING PINION GREASE LEVEL, ADD GREASE
(ONLY MACHINES EQUIPPED WITH AIR CONDITIONER)
WITH AIR CONDITIONER)
REPLACE PILOT FILTER ELEMENT
CLEAN STRAINER OF P.T.O LUBRICATING OIL FILTER
CHECK FAN BELT
REPLACE DRAIN FILTER CARTRIDGE
CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER CARTRIDGE
EVERY 1000 HOURS MAINTENANCE
REPLACE BREATHER ELEMENT IN HYDRAULIC TANK
REPLACE HYDRAULIC OIL FILTER ELEMENT
CHANGE OIL IN SWING MACHINERY CASE
CHANGE OIL IN P.T.O CASE
CHECK ALL TIGHTENING PARTS OF TURBOCHARGER
CHECK PLAY TURBOCHARGER ROTOR
REPLACE CORROSION RESISTOR CARTRIDGE
LUBRICATING FAN PULLEY ASSEMBLY, TENSION PULLEY ASSEMBLY
CHECK WELDED STRUCTURE
CHECK NITROGEN GAS CHARGE PRESSURE IN ACCUMULATOR (for breaker)
EVERY 2000 HOURS MAINTENANCE
CHANGE OIL IN FINAL DRIVE CASE
CHECK INJECTOR
CLEAN HYDRAULIC TANK STRAINER
CLEAN ENGINE BREATHER
CLEAN, CHECK TURBOCHARGER
CHECK ALTERNATOR, STARTING MOTOR
CHECK ENGINE VALVE CLEARANCE, ADJUST
EVERY 4000 HOURS MAINTENENCE
CHECK WATER PUMP
CHECK VIBRATION DAMPER
CHECK FAN PULLEY AND TENSION PULLEY
CHECK FOR LOOSENESS OF HIGH-PRESSURE CLAMP, HARDENING OF RUBBER
REPLACE INJECTOR NOZZLE ASSEMBLY
CHECK FOR MISSING FUEL SPRAY PREVENTION CAP, HARDENING OF RUBBER
EVERY 5000 HOURS MAINTENANCE
CHANGE OIL IN HYDRAULIC TANK
EVERY 8000 HOURS MAINTENANCE
REPLACE HIGH-PRESSURE PIPING CLAMP
REPLACE FUEL SPRAY PREVENTION CAP
SPECIFICATIONS
GENERAL PRECAUTIONS FOR SAFETY
PRECAUTIONS WHEN SELECTING
READ THE INSTRUCTION MANUAL THOROUGHLY
PRECAUTIONS WHEN REMOVING OR INSTALLING
ATTACHMENT GUIDE
COMBINATIONS OF WORK EQUIPMENT
Working Range Diagram
GENERAL LOCATIONS
INSTRUMENTS AND CONTROLS
OPERATION OF WORK EQUIPMENT
PRECAUTIONS FOR MACHINE OPERATION
PRECAUTONS DURING OPERATION
Phenomena that do not indicate failure
PRECAUTIONS WHEN DISASSEMBLING MACHINE
RELEASING PRESSURE
CIRCUIT
RELEASING PRESSURE IN ACCUMULATOR CIRCUIT
MAINTENANCE
CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL
EVERY 10 HOURS SERVICE
CHANGE OIL IN HYDRAULIC TANK, CLEAN STRAINER
EXCAVATOR WORK
PARTS FOR TRANSPORT
CONSUMABLE PARTS LIST
Safety Rules
If Abnormalities are Found
Working Wear and Personal Protective Items
Fire Extinguisher and First Aid Kit
Safety Equipment
Keep Machine Clean
Keep Operator's Compartment Clean
Leaving Operator's Seat with Lock
Handrails and Steps
Mounting and Dismounting
No Persons on Attachments
Burn Prevention
Fire Prevention and Explosion Prevention
Action If Fire Occurs
Windshield Washer Fluid
Falling Objects, Flying Objects and Intruding Objects Prevention
Attachment Installation
Attachment Combinations
Cab Widow Glasses
Unauthorized Modifications
Safety at Jobsite
Working on Loose Ground
Distance to High Voltage Cables
Ensure Good Visibility
Ventilation for Enclosed Area
Signalman's Signal and Signs
Asbestos Dust Hazard Prevention
Checks Before Starting Engine
Safety Rules for Starting Engine
Checks Before Operation
Safety Rules for Changing Machine Directions
Safety Rules for Traveling
Operations on Slopes
Operations on Snow
Loading and Unloading
Shipping the Machine
Battery Hazard Prevention
Safety Rules for Towing
Safety Rules for Lifting Objects
Warning Tag
Keep Work Place Clean and Tidy
Appoint Leader when Working with Others
Stop Engine Before Carrying Out Maintenance
Two Workers for Maintenance when Engine is Running
Proper Tools
Personnel
Attachments
Work Under the Machine
When Using Hammer
Welding Works
Removing Battery Terminals
Safety First when Using High-pressure Grease to Adjust Track Tension
Do Not Disassemble Recoil Springs
Safety Rules for High-pressure Oil
Precaution for High Fuel Pressure
Safety Handling High-pressure Hoses
Precaution for High Voltage
Waste Materials
Compressed Air
Periodic Replacement of Safety Critical Parts
Inside this manual
Real pages from this operation & maintenance manual (341 pages). Open the sample pages (PDF, 431 KB)
- Controls and operation, page 101: DETAILED CONTROLS AND GAUGES
- Specifications, page 231: LUBRICANTS, FUEL AND COOLANT SPECIFICATIONS
- Maintenance, page 276: MAINTENANCE PROCEDURE
- Color page, page 142: OPERATION
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the PC750LC-7K, PC750SE-7K are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
This manual: Operation & Maintenance Manual UEAM002901$69.73
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This is an operator's manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
This manual
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 341 pages
Quantity one is the manual described above.
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Ships in 1 business day.
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Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).