🏷️ Basic Information Identification Make: Komatsu Model: D155A-3 Vehicle Type: Crawler Tractor Serial Number Coverage: 60001 and UP Codes Product Name: Komatsu D155A-3 Crawler Tractor Workshop Service Repair Manual 👋 Introduction Market Position Market Segment: Heavy Construction Equipment - Crawler Dozers Competitive Analysis Competitors: Caterpillar D6/D7 series, John Deere 650J/750J, Case IH CX series, Volvo EC series (specific models depend on year and class). Key Features Of Vehicle Primary Application: Heavy-duty earthmoving, grading, site preparation, mining, and forestry applications. Key Features Of Manual Value Proposition: Provides essential technical data and procedural guidance for maintaining and repairing the Komatsu D155A-3, crucial for minimizing downtime and ensuring operational efficiency. 📋 Manual Details Coverage Areas Manual Content Description: Workshop Service Manual for Repair Page Count Page Count: 729 Manual Type Manual Type: Workshop Service Repair Manual Language Language: English (presumed, based on industry standard for such manuals) Format Format: PDF Delivery Method: Instant Download 📖 Manual Coverage Systems Covered Engine System: Comprehensive coverage including disassembly, assembly, troubleshooting, and repair of engine components (e.g., cylinder head, pistons, crankshaft, fuel system, lubrication system, cooling system). Powertrain System: Detailed instructions for the transmission (e.g., hydrostatic transmission, torque converter, power shift transmission), final drives, and bevel gear assemblies. Undercarriage System: Information on track frames, idlers, rollers, sprockets, and track adjustment procedures. Hydraulic System: Coverage of hydraulic pumps, control valves, cylinders, hoses, filters, and hydraulic system troubleshooting. Electrical System: Wiring diagrams, troubleshooting guides for electrical components, starter, alternator, and control systems. Operator Station And Controls: Details on controls, levers, gauges, and related systems within the operator's cab. Braking System: Service procedures for the braking system, including parking brake and service brake components. Steering System: Information on steering controls and related components. Cooling System: Maintenance and repair procedures for the radiator, fan, coolant circuits, and thermostats. Lubrication System: Details on lubrication points, schedules, and oil specifications. Procedures Included Routine Maintenance: Procedures for oil changes, filter replacements, greasing, fluid level checks, and general inspection. Component Disassembly And Assembly: Step-by-step instructions for removing, inspecting, repairing, and reinstalling major components and sub-assemblies. Troubleshooting Diagnostics: Diagnostic charts, symptom-cause-remedy tables for identifying and resolving common and complex issues. Overhaul Rebuild: Detailed guidance for complete engine or component overhauls, including specifications for wear limits and tolerances. Special Tool Usage: Identification and usage instructions for specialized tools required for specific repair operations. Adjustment Procedures: Guidance on adjusting clutches, brakes, hydraulic controls, and engine parameters. Technical Depth Diagnostic Level: Advanced diagnostic procedures, including interpretation of diagnostic codes and sensor data if applicable. Repair Scope: Comprehensive repair solutions, from minor adjustments to major component rebuilds and system overhauls. Specification Detail: Includes detailed specifications such as torque values, clearances, pressures, fluid capacities, and electrical resistance values. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Print Quality: Optimized for digital viewing and printing, ensuring clarity of diagrams and text. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Searchability Searchability: Likely searchable text within the PDF, allowing quick access to specific information. ⚙️ Engine Specifications Primary Engine Engine Model: Komatsu S6D125E-2 (common for this series, confirmation required based on specific serial number) Engine Type: Inline 6-cylinder, 4-stroke, turbocharged, diesel Displacement: 19.88 L (1213 cu. in.) Performance Gross Horsepower: Approximately 225 HP (168 kW) at rated RPM (specific rating may vary slightly). Net Horsepower: Approximately 210 HP (157 kW) at rated RPM (specific rating may vary slightly). Fuel System Fuel Injection Type: Direct injection, likely with mechanical or early electronic control. Fuel Type: Diesel Fuel 🔧 Transmission Standard Transmission Type: Komatsu advanced hydrostatic steering system with torque converter and power shift transmission. Features Transmission Control: Single lever control for travel speed and direction, plus steering. Planetary Gear Sets: Utilizes planetary gear sets for robust power transfer and smooth shifting. 📐 Dimensions Exterior Operating Weight: Approximately 35,000 - 40,000 kg (77,000 - 88,000 lbs), depending on configuration (blade, ripper, etc.). Ground Pressure: Low ground pressure design for stability and flotation in various soil conditions. Length With Dozer: Varies by blade type, but generally around 5.5 - 6.0 meters (18-20 ft). Height To Cab: Approximately 3.0 - 3.2 meters (10-10.5 ft). Width Over Tracks: Approximately 2.5 - 3.0 meters (8-10 ft), depending on track shoe width. 🛡️ Safety Features Ratings Safety Compliance: Designed to meet relevant industry safety standards for heavy machinery (e.g., ROPS/FOPS compliant cab is likely standard). Active Features Parking Brake: Mechanical actuation parking brake for secure stopping. Passive Features Operator Cab Features: Reinforced operator cab for protection against rollovers and falling objects. 💡 Technology Features Infotainment Operator Interface: Basic operator interface with mechanical and analog gauges, control levers, and indicator lights. Advanced digital displays are not typical for this generation. Driver Assistance Operator Aids: Focus on ergonomic controls and operational feedback rather than electronic driver-assistance systems. Visibility is a key...