🏷️ Basic Information Identification Make: Komatsu Model: 730E Product Name: Komatsu 730E Service Repair Manual A30552 & UP Vehicle Type: Mining Truck / Dump Truck Codes Manual Part Number: A30552 Vehicle Series Code: 730E & UP 👋 Introduction Market Position Segment: Ultra-Class Mining Truck Application: Designed for large-scale mining and heavy-duty construction operations. Competitive Analysis Competitors: Caterpillar 777, Hitachi EH750, Liebherr T 282 C. Key Features Payload Capacity: Approx. 100-ton (90-metric ton) payload capacity. Engine Type: Typically Cummins or MTU diesel engines. Drive System: AC Electric Drive system. Durability: Engineered for extreme operating conditions and long service life. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive service and repair for Komatsu 730E mining dump trucks. Secondary Coverage: Maintenance, troubleshooting, diagnostics, disassembly, assembly, and component specifications. Page Count Estimated Pages: Extensive (typical for heavy equipment service manuals, often 1000+ pages) Manual Type Type: Service Repair Manual Language Language: English (standard for Komatsu service documentation) Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, fuel system, lubrication system, cooling system, intake and exhaust systems, engine diagnostics and troubleshooting. Transmission: Service and repair of the electric drive transmission, motor control units, powertrain diagnostics, and component replacement. Braking System: Hydraulic service brakes, parking brake system, retarder system, brake component diagnostics and repair. Electrical System: Wiring diagrams, component identification, troubleshooting of the electrical system, starter system, charging system, lighting, and control circuits. Hydraulic System: Steering system, hoist system (dump body lift), hydraulic pump and valve service, fluid filtration, and system troubleshooting. Chassis And Frame: Frame inspection and repair, suspension system, steering linkage, front and rear axle service. Body And Operator Station: Cab systems, operator controls, dump body service, access panels, and safety features. Cooling System: Radiator service, fan drive, coolant flow, and temperature control system maintenance. Lubrication System: Lubrication points, oil change intervals, filter specifications, and greasing procedures. Procedures Included Maintenance: Scheduled maintenance tasks, daily inspections, fluid level checks, lubrication schedules. Diagnostics: Troubleshooting guides for common and complex issues, diagnostic codes, and symptom-based repair procedures. Repair And Overhaul: Detailed step-by-step instructions for component removal, disassembly, inspection, repair, assembly, and installation. Torque Specifications: Precise torque values for all critical fasteners and bolted connections. Special Tools: Identification and usage of specialized tools required for specific repair procedures. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to major component overhauls and advanced diagnostics. Diagnostics Level: Advanced, including troubleshooting of electronic control modules (ECMs) and hydraulic/electrical interfaces. Rebuild Capabilities: Full rebuild procedures for engine, transmission, hydraulic systems, and major drivetrain components. 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Searchable Text: Likely searchable text within the PDF for efficient information retrieval. Print Quality Quality: High-resolution, suitable for printing. Binding Type Binding: Digital (PDF format, no physical binding) Paper Type Paper Quality: N/A (digital format) ⚙️ Engine Specifications Primary Engine Engine Manufacturer: Likely Cummins or MTU Engine Model Example: Cummins KTA38-C or MTU 12V4000 (specific to unit configuration) Engine Type: 4-stroke, turbocharged, aftercooled diesel Displacement Example: Approx. 38 Liters for Cummins KTA38 Performance Horsepower Range: 1050 - 1400 HP (approx.) Torque Range: 3700 - 4700 lb-ft (approx.) Fuel System Fuel Injection: Common Rail or Electronic Unit Injection (EUI) Fuel Type: Diesel Fuel Fuel Capacity: Highly variable, typically 2000+ liters (500+ gallons) 🔧 Transmission Standard Type: AC Electric Drive System Components: Engine-driven alternator, AC traction motors (in-wheel or axle mounted), inverters, and control modules. Optional Transmission Type: N/A (Electric drive is standard for this class) Features Retarder: Integrated dynamic braking via traction motors. Traction Control: Advanced electronic control for optimized traction and handling. 📐 Dimensions Exterior Length: Approx. 14.0 - 15.0 meters (46 - 49 ft) Width: Approx. 7.0 - 8.0 meters (23 - 26 ft) Height: Approx. 5.0 - 5.5 meters (16 - 18 ft) Wheelbase: Approx. 5.5 - 6.0 meters (18 - 20 ft) Cargo Body Capacity Struck: Approx. 55-65 m³ (72-85 yd³) Body Capacity Heaped: Approx. 75-85 m³ (98-111 yd³) Weights Operating Weight: Approx. 130,000 - 150,000 kg (286,000 - 330,000 lbs) Payload Capacity: Approx. 100 US tons (90 metric tons) Gross Vehicle Weight: Approx. 230,000 - 250,000 kg (506,000 - 550,000 lbs) 🛡️ Safety Features Ratings Operator Station Protection: ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certified cab. Active Features Braking System: Service brake system with automatic park brake application and engine retarder. Traction Control: Standard, enhancing stability and control in adverse conditions. Passive Features Operator Cab: Vibration-dampened cab with safety glass, emergency egress, and integrated safety systems. Fire Suppression: Optional fire suppression systems available. 💡 Technology Features Infotainment Operator Display: On-board diagnostic displays, status indicators for powertrain, hydraulics, and machine functions. Driver Assistance Payload Monitoring: Integrated payload weighing system for efficient truck loading and management. Electronic Control Modules: Multiple ECMs for engine, transmission, hoist, braking, and other machine systems. Connectivity Telematics: Potential for Komatsu's proprietary telematics...
Service brake system with automatic park brake application and engine retarder.
Traction Control:
Standard, enhancing stability and control in adverse conditions.
Passive Features
Operator Cab:
Vibration-dampened cab with safety glass, emergency egress, and integrated safety systems.
Fire Suppression:
Optional fire suppression systems available.
💡 Technology Features
Infotainment
Operator Display:
On-board diagnostic displays, status indicators for powertrain, hydraulics, and machine functions.
Driver Assistance
Payload Monitoring:
Integrated payload weighing system for efficient truck loading and management.
Electronic Control Modules:
Multiple ECMs for engine, transmission, hoist, braking, and other machine systems.
Connectivity
Telematics:
Potential for Komatsu's proprietary telematics systems (e.g., Komtrax) for remote monitoring and diagnostics, depending on machine configuration and era.
🔧 Maintenance
Service Intervals
Daily Checks:
Engine oil level, coolant level, hydraulic fluid levels, brake system, tire pressure and condition, lights, alarms, and general inspection.
Engine Oil Change:
Typically every 250-500 operating hours, depending on oil analysis and operating conditions.
Fuel Filter Replacement:
As per manufacturer recommendation, often coinciding with oil changes or based on fuel quality.
Air Filter Replacement:
Based on restriction indicators or operating hours (e.g., every 1000-2000 hours).
Fluid Specifications
Engine Oil Type:
API CI-4 or CI-4 PLUS rated synthetic diesel engine oil (e.g., SAE 15W-40).
Hydraulic Fluid Type:
Komatsu Hydraulic Fluid, or Caterpillar TO-4 rated fluid (viscosity grade dependent on ambient temperature).
Coolant Type:
Heavy-duty coolant with OAT (Organic Acid Technology) or HOAT (Hybrid Organic Acid Technology) for protection against cavitation and corrosion.
Transmission Fluid:
N/A for electric drive; traction motors use specialized lubrication, and control systems require specific coolants or dielectric fluids.
Known Issues
Common Wear Items:
Brake pads, tires, suspension components, engine belts, and filters.
Electrical Component Reliability:
Like all complex heavy equipment, electrical system components (sensors, controllers, wiring harnesses) can be susceptible to wear, vibration, and environmental factors.
Cooling System Efficiency:
Maintaining proper coolant flow and radiator cleanliness is crucial to prevent overheating, especially in dusty environments.
📚 Vehicle History
Brand Heritage
Manufacturer:
Komatsu Ltd. is a Japanese multinational corporation that manufactures construction, mining, and industrial equipment.
Model Evolution
Development:
The 730E is part of Komatsu's lineage of large mining haul trucks, continuously evolving with advancements in engine technology, electric drivetrains, and operator ergonomics.
Production
Manufacturing Location:
Primarily manufactured in North America (e.g., Chattanooga, Tennessee, USA) for the global market.
Production Years:
Production commenced in the late 1990s and continues with various updates and series.
🏆 Awards & Recognition
Recognitions
Industry Recognition:
The 730E is recognized within the mining industry for its robust design, reliability, and productivity in its class.