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PC400-7 Manuals. Shop Manual operators & engine shop Manual
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🏷️ Basic Information Vehicle Identification Make: Komatsu Model: PC400-7 Model Variant: PC400-7, PC400LC-7 (long undercarriage) Machine Type: Hydraulic excavator, crawler mounted Production Years Covered: Approximately 2003 to 2008 Serial Number...
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🏷️ Basic Information
Vehicle Identification
Make:
Komatsu
Model:
PC400-7
Model Variant:
PC400-7, PC400LC-7 (long undercarriage)
Machine Type:
Hydraulic excavator, crawler mounted
Production Years Covered:
Approximately 2003 to 2008
Serial Number Prefixes:
PC400-7 and PC400LC-7 series prefixes
Market:
Global, with regional variants
Document Set:
Shop Manual, Operator's Manual, Engine Shop Manual
👋 Introduction
Position And Audience
Market Position:
Mid-size 40-tonne class production excavator for construction, quarry, and mass earthmoving
Design Advantages
Hydraulic Control:
HydrauMind closed-center load-sensing system with electronic proportional control
Engine Match:
Komatsu SAA6D125E engine tuned for fuel economy and torque rise in digging cycles
Operator Environment:
Pressurized cab with low noise and vibration isolation
Service Access:
Centralized service points and diagnostic monitoring for reduced downtime
Key Features
Monitoring System:
Multi-function cab display with fault codes and maintenance reminders
Travel:
Independent hydrostatic travel with counter-rotation capability
Attachments:
Factory hydraulic circuits available for breaker, shear, and grapple
📋 Manual Details
Coverage And Format
Manual Type:
Factory-style service documentation: workshop repair, operator, and engine shop manual
Coverage Areas:
Complete machine service, operation, inspection, disassembly, reassembly, and testing
Language:
English
Format:
PDF digital download
Delivery Method:
Instant download after purchase
Binding:
Digital - no physical binding
Use
Included In Set:
Shop Manual, Operator's Manual, Engine Shop Manual
Searchability:
Text-searchable and printable PDF pages
Page Count:
N/A - varies with the file set supplied
📖 Manual Coverage
Systems Covered
Engine Service:
Removal, installation, cylinder head, block, and overhaul procedures
Fuel System:
Injection pump, injectors, governor, and fuel circuit diagnostics
Cooling System:
Radiator, water pump, thermostat, and fan drive service
Lubrication:
Oil pump, filters, galleries, and pressure testing
Hydraulic Pumps:
Main pump, LS valves, relief pressures, and pump flow testing
Hydraulic Components:
Control valves, swing motor, travel motors, cylinders, and accumulators
Swing Machinery:
Swing bearing, swing brake, and swing reduction gear
Undercarriage:
Track frame, rollers, idlers, sprockets, and track tension adjustment
Electronic Control:
Controller, sensors, wiring schematics, and fault code troubleshooting
Cab And HVAC:
Operator's cab, air conditioning unit, blower, and control panels
Procedures And Depth
Diagnostic Procedures:
Pressure and flow checks, resistance tests, and symptom-to-cause charts
Adjustment Procedures:
Tolerances, shim values, torque tables, and wear limits
Disassembly And Assembly:
Step-by-step teardown and rebuild with component identification
Testing And Inspection:
Performance tests with expected values and pass/fail criteria
Wiring Diagrams:
Circuit schematics and connector pinouts with component locations
Safety Procedures:
Lockout, pressure release, lifting, and support requirements before service
Maintenance Standards:
Periodic inspection tables and service limits
Special Tools:
Tool part numbers referenced where required for service
Parts And Component Information
Parts Identification:
Exploded views with part names and callouts for assemblies
Component Specifications:
Engine and hydraulic specification tables in the engine shop manual
Fluids And Capacities:
Lubricants, coolant, and hydraulic oil types with fill capacities
Applicability Notes:
Verify serial number and machine variant before ordering replacement parts
📊 Manual Specifications
File & Compatibility
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print & Binding
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
⚙️ Engine Specifications
Primary Engine
Engine Model:
Komatsu SAA6D125E-3
Configuration:
6-cylinder, four-stroke, water-cooled diesel
Aspiration:
Turbocharged and air-to-air aftercooled
Displacement:
11.0 L
Bore And Stroke:
125 mm x 150 mm
Rated Output:
Approximately 246 kW at 1,900 rpm
Emission Standard:
EPA Tier 2 / EU Stage 2 era
Fuel And Filtration
Fuel System:
Direct injection with mechanically governed injection pump
Starting:
Electric 24 V starter, dual batteries
Air Cleaner:
Dry element type with dust indicator
Not In This Manual
Other Engine Options:
N/A - PC400-7 is fitted with the SAA6D125E engine series only
🔧 Transmission
Travel Drive
Type:
Hydrostatic travel drive, independent axial piston motors
Configuration:
Two-speed travel with automatic and manual selection
Final Drive:
Planetary reduction gear in each travel motor assembly
Steering:
Counter-rotation by directional control lever
Braking:
Hydraulic travel brake with mechanical parking brake
Upper Structure Drive
Swing Drive:
Axial piston swing motor with planetary reduction
Swing Brake:
Hydraulic released, spring applied
Features
Control:
HydrauMind electronic control of pump output and travel speed
Diagnostics:
Travel and swing pressure test points in the shop manual
📐 Dimensions
Exterior
Model:
PC400-7
Overall Length:
Approximately 11,860 mm
Overall Width:
Approximately 3,340 mm
Overall Height:
Approximately 3,450 mm
Wheelbase:
N/A - crawler undercarriage, no wheelbase; track length approximately 4,825 mm
Track Shoe Width:
600 mm standard
Weights
Operating Weight:
Approximately 41,400 kg with standard equipment
Curb Weight:
Not applicable to crawler machines; operating weight is used
Ground Pressure:
Approximately 78 kPa with 600 mm shoes
Shipping Mass:
Varies with attachment; confirm with serial number data
🛡️ Safety Features
Crash And Rollover
Crash Test Rating:
N/A - construction machinery not rated under passenger car crash test programs
Operator Protection:
ROPS and FOPS cab structures available per specification
Active Features
Travel Alarm:
Audible travel warning as fitted
Monitoring:
Display warnings for coolant, oil pressure, and hydraulic faults
Lockout:
Hydraulic lock lever isolates attachment and swing functions
Retractable Seat Belt:
Operator restraint with mounting to seat frame
Passive Features
Cab:
Pressurized steel frame cab with glass panels
Access:
Slip-resistant steps and handrails
Emergency Exit:
Rear window serves as emergency escape
Lighting:
Work lights and specification-dependent beacon
💡 Technology Features
Infotainment And Controls
Audio System:
AM/FM radio with speakers, specification dependent
Display:
Multi-function monitor for gauges, warnings, and service codes
Cab Comfort:
Heater and air conditioning with filtered pressurized air
Driver Assistance
Hydraulic Control:
HydrauMind load-sensing control with selectable working modes
Working Modes:
Mode selection for boom priority, swing priority, and travel speed
Diagnostics:
On-board monitoring with service code retrieval described in the manual
N/A:
N/A - no camera or autonomous grade system fitted on standard PC400-7
🔧 Maintenance
Service Intervals
Daily:
Check engine oil, coolant, hydraulic oil level, and dust indicator
250 Hours:
Engine oil and oil filter change, grease points
500 Hours:
Fuel filter and hydraulic return filter service
1,000 Hours:
Hydraulic oil sample and filter change, transmission case filter
2,000 Hours:
Hydraulic oil replacement and major inspection
Fluid Specifications
Engine Oil:
API CF-4 or higher, 10W-30 or 15W-40 depending on climate
Coolant:
Ethylene glycol based with corrosion inhibitor, mixed per manual ratio
Hydraulic Oil:
Komatsu hydraulic oil or equivalent ISO VG46 class
Final Drive:
Gear oil as specified in the shop manual
Grease:
Lithium based multi-purpose EP grease
Known Wear Items
Undercarriage:
Track links, bushings, sprockets, idlers, and rollers wear with hours
Filters:
Engine, fuel, hydraulic, and air filters are routine service items
Hydraulic Seals:
Cylinder and swing joint seals requiring periodic inspection
Electronics:
Controller and sensor connectors subject to moisture and vibration damage
📚 Vehicle History
Brand And Heritage
Manufacturer:
Komatsu Ltd., Japan
Founded:
1921
Core Products:
Construction, mining, and utility equipment
Model Evolution
PC400 Family:
Established 40-tonne class excavator line used worldwide
PC400-7 Era:
Dash-7 generation introduced upgraded hydraulic control and monitoring
Successor:
Followed by PC400-8 with further emission and control updates
Production
Assembly:
Komatsu plants including Japan and regional facilities
Regional Variants:
Specification varies by market; confirm serial number for exact build
🏆 Awards & Recognition
Model Recognition
Industry Standing:
Widely used 40-tonne class machine recognized for hydraulic efficiency in earthmoving
Award Detail:
N/A - no specific documented award for this model in the source material
Documentation Recognition
Manual Value:
Factory shop and engine manuals are relied on by technicians for rebuild and diagnostic work
Coverage:
Keeps PC400-7 and PC400LC-7 machines serviceable with correct specifications