🏷️ Basic Information Identification Make: Komatsu Model: HM400-2 Product Type: Articulated Dump Truck Service Repair Manual + Field Assembly Instruction + Operation & Maintenance Manual 👋 Introduction Market Position Application: Heavy-duty off-highway construction and mining operations Vehicle Type: Articulated Dump Truck Competitive Analysis Segment: Large capacity articulated dump trucks (ADT) Key Features Articulation And Oscillation: Robust articulation hitch with oscillation for excellent maneuverability and stability on uneven terrain Payload Capacity: Designed for high payload capacity, contributing to efficient material transport Durability: Built with heavy-duty components and robust construction for demanding environments Operator Comfort: Ergonomic cab design focusing on operator comfort and visibility 📋 Manual Details Coverage Areas Manual Portions: Service Repair, Field Assembly Instruction, Operation & Maintenance Manual Type Types Included: Service Repair Manual, Field Assembly Instructions, Operation & Maintenance Manual Language Primary Language: English Format Digital Format: PDF (assumed for digital product) 📖 Manual Coverage Systems Covered Engine System: Detailed diagnosis, repair procedures, component testing, specifications for the primary engine Powertrain System: Transmission, torque converter, drive shafts, differentials, final drives, hydraulic systems for propulsion Braking System: Service and repair of wet disc brakes, parking brake, retarder system Steering System: Hydraulic steering system, articulation joint, steering cylinders, components Hydraulics System: Dump body hoist system, steering hydraulics, filter systems, pump and cylinder repair, troubleshooting Electrical System: Wiring diagrams, component testing, starter, alternator, battery system, control modules, sensors Operator Station Cab: Controls, instrumentation, HVAC system, seat, safety features Chassis Frame: Frame inspection, articulation hitch maintenance, mounting hardware torque specifications Dump Body: Hoisting mechanism, body structure, tailgate operation and repair Procedures Included Maintenance: Scheduled maintenance, lubrication, fluid checks, filter replacements, greasing points Troubleshooting: Diagnostic charts, common problems, fault codes, systematic troubleshooting guides for all major systems Repair: Detailed step-by-step repair procedures for all components and systems, including disassembly, reassembly, and adjustment Field Assembly: Instructions for initial assembly, component installation, and post-transport setup Operation Guidance: Safe operating practices, pre-operation checks, understanding controls, load handling Technical Depth Diagnostic Level: Advanced diagnostics including electrical system troubleshooting, hydraulic pressure testing, and engine performance analysis Rebuild Procedures: Complete rebuild procedures for engine, transmission, hydraulic components, and final drives Specifications And Tolerances: Precise technical specifications, torque values, clearances, and wear limits for all serviceable parts 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Searchable text content for quick information retrieval Print Quality Illustrations Quality: High-resolution diagrams, schematics, and photographs for clarity Binding Type Binding Method: Digital Download (no physical binding) Paper Type Digital Paper Equivalent: Digital pages, suitable for on-screen viewing or printing ⚙️ Engine Specifications Primary Engine Engine Model: Komatsu SAA6D125E-2 (likely, common for this model range) Engine Type: 6-cylinder, turbocharged, intercooled, diesel engine Displacement: Approximately 11.0 liters (specific displacement may vary slightly) Performance Net Horsepower: Approximately 310 HP (231 kW) at rated RPM (typical for HM400-2) Peak Torque: Specific torque figures detailed in manual, typically above 1000 lb-ft Fuel System Fuel Injection: Common rail direct injection (or similar advanced diesel injection system) Emissions Compliance: Meets relevant emissions standards for its production era (e.g., Tier II/III) 🔧 Transmission Standard Transmission Type: Komatsu proprietary electronically controlled powershift transmission Number Of Gears: Typically 6 forward and 3 reverse gears Features Shift Control: Automatic or manual shift selection, optimized for load and terrain Retarder System: Integrated retarder for downhill speed control 📐 Dimensions Exterior Overall Length: Approximately 10.8 - 11.0 meters (specific to configuration) Overall Width: Approximately 3.2 - 3.3 meters Overall Height: Approximately 3.5 - 3.7 meters (to top of cab) Cargo Heaped Capacity: Approximately 23.0 - 24.0 cubic meters Weights Operating Weight: Approximately 22,000 - 23,000 kg (tare weight) Payload Capacity: Rated for approximately 40 US tons (36.3 metric tons) Gross Vehicle Weight: Approximately 62,000 - 63,000 kg (loaded) 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) compliant cab Falling Object Protection: FOPS (Falling Object Protective Structure) compliant cab Active Features Braking System Type: Service brakes: Wet disc, hydraulically actuated; Parking brake: Spring applied, hydraulically released, internal expanding Retarder Functionality: Engine exhaust brake and transmission retarder for enhanced downhill control Visibility Enhancements: Large cab glass, optional rear-view camera system, good lighting Passive Features Seatbelts: Operator seat with retractable seat belt Emergency Stops: Emergency stop buttons accessible from cab and ground 💡 Technology Features Infotainment Instrument Panel: Comprehensive instrumentation including analog gauges and/or digital displays for engine status, speed, fuel, etc. Driver Assistance Payload Monitoring: Some models may feature integrated payload monitoring systems for optimization. Connectivity Telematics Provision: Provision for telematics systems (e.g., Komatsu KOMTRAX) for remote monitoring of machine health and operation (may be optional or factory-fitted on later versions). 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250-500 operating hours, detailed in O&M manual Hydraulic Oil Filter Change: Based on hours or pressure monitoring, as specified in O&M manual Air Filter Maintenance: Regular inspection and replacement based on operating conditions and...