🏷️ Basic Information Identification Make: Komatsu Model: HM400-1L Product Type: Articulated Truck Vehicle Category: Heavy Construction Equipment / Off-Highway Truck Codes Model Code: HM400-1L 👋 Introduction Market Position Market Segment: Heavy-duty off-highway articulated dump trucks for mining, quarrying, and large-scale construction projects. Competitive Analysis Key Competitors: Caterpillar (e.g., 730C), Volvo (e.g., A30G), John Deere, Bell Equipment, Hitachi. Key Features Articulation Steering: Hydro-mechanical articulation steering system for superior maneuverability in confined spaces and rough terrain. Payload Capacity: Designed for substantial payload capacity, typically in the range of 35-45 metric tons. Durability And Reliability: Engineered for demanding operating conditions, emphasizing robust construction and component longevity. 📋 Manual Details Coverage Areas Manual Set Description: This product includes two distinct manuals: the Service Repair Manual and the Operation & Maintenance Manual. Page Count Service Repair Manual Estimated Pages: Refer to specific manual edition for exact count; typically hundreds of pages for comprehensive coverage. Operation Maintenance Manual Estimated Pages: Refer to specific manual edition for exact count; typically over 100 pages for operational and routine maintenance information. Manual Type Service Repair Manual Type: Service Repair Manual (SRM) Operation Maintenance Manual Type: Operation & Maintenance Manual (O&M) Language Language: English Format Format: Digital (likely PDF, common for service documentation) 📖 Manual Coverage Systems Covered Powertrain Systems: Engine overhaul, fuel system, lubrication system, cooling system, exhaust system, transmission (torque converter, powershift transmission), drive axles, differentials. Hydraulic Systems: Steering system, hoist system (dump body hydraulics), brake system (service brakes, parking brake), hydraulic pump, control valves, cylinders, filters, reservoir. Electrical Systems: Starting system, charging system, lighting system, instrumentation, sensors, ECUs (engine control unit, transmission control unit), troubleshooting diagnostic procedures, wiring diagrams. Chassis And Body: Frame, suspension (articulation joint, bogie suspension), steering linkage, dump body structure, cab, mounting hardware, wear plates. Procedures Included Maintenance Procedures: Routine inspections, lubrication points and schedules, filter replacement intervals, fluid level checks and top-offs, battery maintenance. Repair Procedures: Step-by-step disassembly, inspection, repair, and reassembly instructions for all major components and systems. Includes torque specifications and clearances. Troubleshooting Procedures: Diagnostic flowcharts, symptom-based troubleshooting, fault code interpretation, electrical system diagnostics, hydraulic system diagnostics. Special Tools And Jigs: Identification and usage instructions for specialized tools required for specific repair procedures. Technical Depth Depth Of Coverage: Comprehensive; covers from basic operation and maintenance to in-depth engine overhauls, transmission rebuilds, and complex hydraulic system repairs. Diagnostic Capabilities: Advanced diagnostic information, including reading and interpreting error codes from electronic control units (ECUs) and providing step-by-step diagnostic procedures. Calibration And Adjustment: Procedures for calibration and adjustment of various systems, such as transmission shift points, hydraulic pressures, and sensor readings. 📊 Manual Specifications File Format Digital Format Details: Likely PDF; high resolution for clarity, text-searchable for efficient information retrieval, printable pages. Print Quality Print Quality Description: If printed, expect clear, high-quality reproductions of diagrams, schematics, and text, suitable for workshop use. Binding Type Binding Type Description: If printed, typically spiral-bound or comb-bound for lay-flat usability in a workshop environment. Paper Type Paper Type Description: If printed, generally on durable, heavy-weight paper to withstand workshop conditions. ⚙️ Engine Specifications Primary Engine Engine Make: Komatsu (or Cummins, depending on specific build configuration for the -1L series) Engine Model Typical: Komatsu SAA6D140E-3 (or Cummins QSX15) Engine Type: Turbocharged, Intercooled, Diesel Performance Gross Horsepower Typical: Approximately 400-475 HP (298-354 kW) at rated speed. Net Horsepower Typical: Approximately 370-440 HP (276-328 kW) at rated speed. Peak Torque Typical: In the range of 1400-1600 lb-ft (1900-2170 Nm), dependent on specific engine variant. Fuel System Fuel Injection Type: Common Rail Direct Injection (CRDI) or high-pressure electronic unit injectors. Fuel Type: Diesel Fuel Emission Controls Emission Standards: Compliant with relevant EPA/EU emission standards for its production era (e.g., Tier 2/Stage II). 🔧 Transmission Standard Transmission Type: Komatsu Advanced Transmission System (ATS) with torque converter lock-up. Gear Selection: Electronically controlled automatic powershift transmission, typically 5 forward and 4 reverse gears. Features Transmission Control Modes: Includes modes for optimizing performance and fuel efficiency based on operating conditions (e.g., auto mode, manual mode). Torque Converter Lockup: Provides direct drive for improved fuel economy at higher speeds by bypassing the torque converter. Fluid Specifications Transmission Fluid Type: Komatsu genuine transmission oil (KESS) or equivalent heavy-duty automatic transmission fluid (ATF) meeting specified performance criteria. 📐 Dimensions Exterior Overall Length Typical: Approximately 8.5 - 9.5 meters (28 - 31 feet) Overall Width Typical: Approximately 3.0 - 3.2 meters (10 - 10.5 feet) Overall Height Typical: Approximately 3.2 - 3.4 meters (10.5 - 11 feet) to top of cab. Wheelbase Typical: Approximately 3.5 - 3.8 meters (11.5 - 12.5 feet) Cargo Body Volume Heaped Typical: Approximately 18 - 23 cubic meters (23.5 - 30 cubic yards) Payload Capacity Typical: Approximately 36 - 41 metric tons (40 - 45 short tons) Weights Operating Weight Typical: Approximately 26,000 - 30,000 kg (57,300 - 66,100 lbs) Gross Vehicle Weight Rating Gvwr...