🏷️ Basic Information Identification Make: Komatsu Model: D355A-3 Crawler Tractor Product Type: Workshop Service Repair Manual Serial Number Coverage: 3301 and UP Codes Model Code: D355A-3 👋 Introduction Market Position Category: Heavy Construction Equipment - Crawler Tractor Application: Earthmoving, grading, land clearing, mining, forestry, construction site preparation. Competitive Analysis Competitors: Caterpillar D8/D9 series, John Deere 850/950 series, Dressta TD-25/TD-40 series. Key Features Durability: Renowned for robust construction and reliability in demanding environments. Power: High drawbar pull and engine power for heavy-duty tasks. Operability: Designed for operator efficiency with responsive controls. 📋 Manual Details Coverage Areas Geographic Coverage: Global (Komatsu standard specifications) Page Count Total Pages: 841 Manual Type Type: Workshop Service Repair Manual Language Primary Language: English Format Delivery Format: Digital (PDF) - Instant Download 📖 Manual Coverage Systems Covered Engine: Comprehensive diagnostics, overhaul, tuning, cooling system, lubrication system, fuel system, intake and exhaust systems. Powertrain: Transmission (power shift, torque converter), final drives, steering system, drive shaft, planetary gear assemblies. Undercarriage: Track frames, track rollers, idlers, recoil springs, bogie construction, adjustment, and repair. Hydraulic System: Main pump, control valves, cylinders (lift, tilt), hoses, filters, troubleshooting, and component testing. Electrical System: Starter, alternator, battery, wiring diagrams, lighting, gauges, troubleshooting electrical faults. Operator Station: ROPS/FOPS structure, seat, controls, instrumentation, heating/ventilation (if applicable). Attachments: Standard dozer blade (lift, tilt, angle) systems, ripper (if applicable) hydraulics and components. Procedures Included Preventive Maintenance: Lubrication points, fluid changes, filter replacements, greasing intervals, inspections. Troubleshooting: Diagnostic charts, symptom-based troubleshooting for all major systems, error code explanations. Repair And Overhaul: Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation for major assemblies. Adjustments: Brake adjustments, clutch adjustments, blade control adjustments, track tension adjustments. Testing And Calibration: Hydraulic system pressure testing, engine performance testing, calibration of sensors and actuators. Technical Depth Depth: Comprehensive, suitable for dealership technicians and experienced mechanics. Covers detailed disassembly and rebuild procedures. 📊 Manual Specifications File Format Format: PDF Searchable: Yes (typically, depending on PDF conversion) Print Quality Quality: High-resolution scans, suitable for printing clear diagrams and text. Binding Type Binding: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Make: Komatsu Engine Model: S6D140E-3 (likely, confirmation within manual) Engine Type: Diesel, 4-stroke, turbocharged, direct injection Displacement: Approximately 15.24 L (930 cu. in.) (typical for this class) Performance Gross Horsepower: Approximately 320 HP (239 kW) at 2000 RPM (subject to specific rating, confirmed in manual) Max Torque: Refer to manual for specific torque ratings. Fuel System Fuel Type: Diesel Fuel Fuel Injection System: Inline fuel injection pump or electronically controlled common rail (depending on exact build date, check manual for specifics). Fuel Filter Part Number: Refer to manual for specific Komatsu P/N. Cooling System Coolant Type: Ethylene Glycol based antifreeze (50% mixture recommended) Coolant Capacity: Refer to manual for exact capacity. 🔧 Transmission Standard Transmission Type: Komatsu Advanced Transmission System (ATS) - Hydro-shift power train Number Of Gears: 3 Forward / 3 Reverse (typical for this model) Transmission Fluid Type: Komatsu genuine transmission oil or equivalent DEXRON III / MERCON (verify in manual) Transmission Fluid Capacity: Refer to manual for exact capacity. Features Torque Converter: Lock-up mechanism for improved fuel efficiency in higher gears. 📐 Dimensions Exterior Operating Weight: Approximately 40,000 - 43,000 kg (88,000 - 95,000 lbs) (depending on configuration, confirm in manual) Length With Dozer: Approximately 7.5 - 8.5 meters (24.6 - 27.9 ft) Width Over Tracks: Approximately 3.0 - 3.5 meters (9.8 - 11.5 ft) (standard track shoe width) Height To Exhaust: Approximately 3.2 meters (10.5 ft) Ground Clearance: Approximately 0.5 meters (1.6 ft) Cargo Dozer Blade Capacity: Refer to manual for blade specifications (e.g., U-blade, Straight tilt blade, Semi-U blade). Weights Ripper Weight: Optional attachment, weight varies. Refer to manual if equipped. 🛡️ Safety Features Ratings Operator Protection: ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) compliant (standard feature). Active Features Braking System: Hydraulically assisted, wet multi-disc brakes for reliability and durability. Parking brake system. Passive Features Seatbelt: Operator seatbelt (typically 3-point harness). 💡 Technology Features Infotainment Infotainment System: Not applicable for this heavy equipment model. Driver Assistance Driver Assistance Features: Basic operator controls, diagnostic indicators. No electronic driver assistance systems. Connectivity Connectivity Features: Not applicable for this heavy equipment model. 🔧 Maintenance Service Intervals Engine Oil Change: Every 250 operating hours or 6 months (typical, confirm in manual). Hydraulic Oil Change: Every 1000 operating hours or 12 months (typical, confirm in manual). Transmission Oil Change: Every 1000 operating hours or 12 months (typical, confirm in manual). Undercarriage Greasing: Daily or every 50 operating hours (refer to lubrication chart in manual). Fluid Specifications Engine Oil Viscosity: SAE 15W-40 CD or CE grade (confirm in manual for specific Komatsu recommendation). Hydraulic Oil Spec: Komatsu genuine hydraulic oil or ISO VG 46 / SAE 20W-30 (verify in manual). Final Drive...