Kobelco SK400 IV, SK400LC IV Hydraulic Excavator Service Manual
1,276 pages · Publication S5YSU0002E
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- Models
- SK400 IV, SK400LC IV
- Serial coverage
- SK400 IV YSJ00001~, SK400LC IV YSU0001~
- Manual type
- Service Manual
- Pages
- 1,276
- Publication
- S5YSU0002E
- Condition
- Brand new

What's inside
From the manual's own table of contents: 12 sections, 231 entries. See sample pages (PDF, 519 KB)
KOBELCO70 topics
- WORKING RANGES OF ATTACHMENTS 00
- Performance Inspection Standard
- Preparation
- Summary of Functions of Hydraulic Circuits
- Negative Flow Control Circuit in a Neutral Circuit
- PILOT PIPING
- GlJARD
- HYDRAt:LIC PIPI~G
- AIR CLEANER
- RADIATOR
- AIR LINE
- Dismantling
- and Mounting Procedure
- and l\Iounting ProcedL.J'l!
- Construction
- Maintenance Standard
- Disassembly and Rf::cl~>dnbly
- 5A :Maintenance Standard
- Tools and Jigs
- Disassembly and Reassembly·
- Maintenance StandarJ
- Maintenance Standard
- Tools and Jigs
- LOWER ROLLER
- Dismantling
- and l\Iounting Proceliurl!
- Maintenance Standard
- Construction
- Tools and Jigs
- Disassembly and Reassembly
- Maintenance Standard
- Tools and Jigs
- and Mounting Procedllr
- Maintenance Standal J
- Disassembly and Reassembly
- Maintenance Standard
- Disassembly and Reassembly··
- Tools and Jigs
- Maintenance Standard
- Tools and Jigs
- BUCKET
- Construction
- BOOM
- Construction
- HYDRAULIC CYLINDER
- Dismantling and Mounting Hydraulic Cylinder
- Harness Connector Layout
- Input I Output Diagram
- Controller Connector Layout and Color Code
- Location of Controller
- and Diagnostic Displays
- Work Mode System
- Variable Loading Mode System (optional)
- Power Boost and Heavy Lift System
- Engine Auto Accel System
- Summary of Main Electric Equipment
- List of Electric Equipment
- (Component Descriptions)
- KOBELCO AMERICA INC
- HARNESS
- Cab Harness
- HYDRAULIC SYSTDf
- ATTACHMENT SYSTEM
- CONTROL SYSTEM
- MECHATRONICS SYSTEM
- l.1 General View
- MAINTENANCE STANDARDS
- Construction
- Fault Finding and Remedies on the Regulator
- Tools
KoaELCO45 topics
- SPECIFICATION
- General View
- CONSTRUCTION AND FUNCTION
- Construction
- DISASSEMBLY AND ASSEMBLY
- Assembly
- General View
- Construction
- Assembly
- MAINTENANCE STANDARDS
- Assembly
- Tightening Torque
- CONSTRUCTION AND OPERATION
- MAINTENANCE STANDARDS
- Appearance
- Performance Characteristics
- Precautions to be Exercised on Maintenance
- Construction
- Tools
- CONSTRUCTION AND FUNCTION
- Construction
- Assembly
- General View
- Specifications
- Construction
- Disassembly
- Valves Contained in the Motor
- Preparation
- Usable Limit of the Parts
- SPECIFICATIONS
- Inspection after Disassembly
- TOOLS AND JIGS LIST
- Piston Seal Fitting Jig
- General View
- Tools
- Assembly
- GENERAL
- ENGINE
- LUBRICATION
- FUELAND ENGINE CONTROL
- COOLING
- INTAKE AND EXHAUST
- ENGINE ELECTRICAL
- CLUTCH
- SPECIALEQUIPMENT
COMPILATION OF THIS2 topics
- INTO FOOT-POUND UNITS
- READING THE ILLUSTRATION
GENERAL19 topics
- EXTERNAL VIEW
- MAJOR SPECIFICATIONS
- GENERAL BOLTS AND NUTS
- TIGHTENING TORQUE TABLE
- Application
- PLATE
- GENERAL
- SPECIFICATIONS
- SERVICE STANDARDS
- Service Standards Table
- SPECIAL TOOLS
- SERVICE PROCEDURES
- Measuring Compression Pressure
- Cylinder Head and Valve Mechanism
- Disassembly
- Inspection
- Reassembly
- Crankcase and Main Moving Parts
- TROUBLESHOOTING
ENGINE <SOC>5 topics
- lightening Torque Table
- Reassembly
- Flywheel, liming Gear, and
- Inspecting and Adjusting Valve
- Clearances
LUBRICATION8 topics
- Disassembly and inspection
- Oil Filter and Oil Cooler
- Removal and installation
- Oil Pump
- Oil filter
- Oil cooler
- Regulator Valve
- TROUBLESHOOTING
FUEL AND ENGINE CONTROL22 topics
- AD Type Injection Pump
- Testing and adjustment
- P Type Injection Pump
- RSV Type Governor
- RFD Type Governor
- Feed Pump
- Tests
- SA Type Automatic TImer
- Removal and inspection
- Installation and adjustment
- SP Type Automatic TImer
- SPG Type Automatic TImer
- Bleeding of Fuel System
- fuel injection start timing
- and maximum no-load speeds
- Pump Drive Case
- Injection Nozzle
- Cleaning and inspection
- <1-spring nozzle>
- Inspection and Adjustment
- Fuel Filter
- Water Separator
COOLING14 topics
- SERVICE PROCEDURE
- Shroud
- Removal and Installation of Cooling
- Water Pump <602>
- Water Pump <8DC>
- Thermostat
- Fan Drive
- Tension Pulley
- Inspection of Radiator
- V-belt Tension
- Adjustment
- Cleaning of Cooling System
- Gas Leak Test
- Bleeding the Cooling System
INTAKE AND EXHAUST10 topics
- Disassembly and reassembly
- Turbocharger
- TDOa type turbocharger
- 3LM type turbocharger
- Intercooler
- System
- Air pressure test
- Removal and Installation of Exhaust
- Circuit
- Air Cleaner
ENGINE ELECTRICAL20 topics
- Starter
- Alternator
- Safety Relay
- Regulator
- Intake Air Heater
- Automatic Stop System
- Shutdown type
- Run-on type
- SPECIAL TOOL
- Starter Relay
- A Alternators (with brush type)
- installation
- (with brush type)
- Testing
- (brush less type)
- Safety Relay Inspection
- Preheater
- Heater relay
- Automatic Stop System
- Shut down type
CLUTCH1 topic
- Bearing Case
SPECIAL EQUIPMENT3 topics
- Air Compressor
- Air Pressure Governor
- Reassembly and adjustment
Inside this manual
Real pages from this service manual (1,276 pages). Open the sample pages (PDF, 518 KB)
- Diagram, page 282: 3. CONNECTION TABLE OF HARNESSES ACCORDING TO WIRE NUMBERS
- Troubleshooting, page 814: ENGINE <SOC> -
- Specifications, page 1,023: COOLING -
- Foldout diagram (color), page 72
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the SK400LC IV are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
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This is a service 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.
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.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
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, 1,276 pages
Quantity one is the manual described above.
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60-day returns
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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.
Other editions and similar models
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).