🏷️ Basic Information Identification Make: Komatsu Model: D355A-3 Machine Type: Crawler Dozer / Bulldozer Serial Number Coverage: S/N 3301 and up 👋 Introduction Market Position Product Category: Heavy Construction Equipment Service Manual Target Audience: Komatsu D355A-3 owners, operators, maintenance technicians, repair shops, and parts suppliers. Competitive Analysis Value Proposition: Provides essential, factory-authorized information for maintaining and repairing the D355A-3, ensuring optimal performance, longevity, and safety. Key Features Authenticity: Official factory service repair manual, ensuring accuracy and completeness. Scope: Covers all aspects of mechanical and hydraulic systems, essential for comprehensive service. Delivery Method: Instant PDF download for immediate access to critical repair information. 📋 Manual Details Coverage Areas Primary Coverage: Complete Factory Service Repair Page Count Estimated Page Count: Extensive (typical for factory service manuals, often 500+ pages, exact count not provided) Manual Type Type: Factory Service Repair Manual Language Language: English (Assumed, standard for factory manuals unless otherwise specified) Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine System: Detailed diagnosis, repair, overhaul, specifications for Komatsu's diesel engines (likely SAA6D140E-3 or similar variant) Powertrain System: Torque converter, transmission (planetary, power shift), final drives, differentials, bevel gear Undercarriage System: Track frames, idlers, track rollers, carrier rollers, sprockets, recoil springs, adjustment and maintenance Hydraulic System: Pumps, cylinders, control valves, hydraulic motors, steering system, implement control Electrical System: Starting and charging systems, wiring diagrams, sensors, instrument panel, control modules Braking System: Service brakes, parking brakes, adjustments, hydraulic components Operator Station: Cab structure, seating, controls, instrumentation, HVAC (if applicable) Work Equipment: Dozer blade (type and adjustment), ripper (if equipped), hydraulic attachments Procedures Included Maintenance: Scheduled maintenance, lubrication points, filter replacement, fluid changes Troubleshooting: Diagnostic charts, symptom analysis, common failure modes, repair solutions Repair: Detailed step-by-step instructions for component removal, disassembly, assembly, and reinstallation Overhaul: Complete engine and powertrain rebuild procedures, including clearances, torques, and specifications Adjustment: Brake adjustments, track tensioning, control linkage adjustments Calibration: Hydraulic system calibration, control lever sensitivity Technical Depth Depth: Comprehensive: Covers routine maintenance to complete engine and powertrain rebuilds, including detailed schematics and diagnostic procedures. 📊 Manual Specifications File Format File Type: PDF Print Quality Quality: High-resolution scans of original factory documentation, ensuring clarity of text and diagrams. Binding Type Binding: Digital Download (PDF) - No physical binding Paper Type Paper: N/A (Digital format) Searchability Text Search: Searchable text within the PDF for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Model: Likely Komatsu SAA6D140E-3 (or similar direct-injection, turbocharged, aftercooled diesel engine) Performance Displacement: Approximately 15.24 L (930 cu in) Horsepower Gross: Approximately 305 HP (227 kW) @ 2000 RPM (Subject to specific configurations) Torque: Significant torque output for heavy pushing and pulling, specific figures vary by configuration. Fuel System Fuel Type: Diesel Injection System: Direct Injection, likely with electronic control (Common Rail or Unit Injectors depending on exact serial range) Cooling System Type: Water-cooled, pressurized system with fan 🔧 Transmission Standard Type: Planetary Power Shift Transmission Gears: Typically 3 forward and 3 reverse speeds Features Control Type: Electronic or hydraulic control with single-lever operation Fluid Type: Komatsu genuine transmission oil or equivalent API GL-4/GL-5 with Allison C-4 approval (Consult manual for exact spec) Fluid Capacity: Refer to manual for specific capacity, typically around 25-30 liters. 📐 Dimensions Exterior Operating Weight: Approximately 35,000 kg - 40,000 kg (77,000 - 88,000 lbs), depending on configuration (blade, ripper, cab). Length W Blade: Approx. 7.8 meters (25.6 ft) Width Over Tracks: Approx. 3.5 meters (11.5 ft) for standard track gauge. Height To Cab Top: Approx. 3.3 meters (10.8 ft) Weights Ground Pressure: Low ground pressure for its class, enabling operation on varied terrain. 🛡️ Safety Features Ratings Nacap Rating: N/A (Not applicable to heavy equipment) Active Features Barking System: Wet, multiple-disc service brakes; spring-applied, hydraulically released parking brake. Steering System: Hydrostatic power steering system with automatic brake application upon loss of hydraulic pressure. Passive Features Operator Station: ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) compliant cab/canopy as standard or option. Visibility: Designed for good operator visibility of work area and surroundings. 💡 Technology Features Infotainment Operator Controls: Basic but functional operator controls, focusing on usability and durability for heavy-duty operations. May include basic monitoring displays. Driver Assistance Features: Focus on robust mechanical and hydraulic systems rather than advanced electronic driver-assistance features common in light vehicles. Connectivity Features: No modern connectivity features such as Bluetooth or GPS navigation as standard. 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250-500 operating hours, depending on operating conditions and oil analysis. Refer to manual for exact interval and spec. Hydraulic Oil Change: Typically every 1000-2000 operating hours, or as per oil analysis. Refer to manual for exact interval and spec. Track Tension Check: Daily or every 50 operating hours. Fluid Specifications Engine Oil Viscosity: SAE 10W-30 or 15W-40 (API CD/CE/CF or higher). Refer to manual for exact specification. Coolant Type: Ethylene...