🏷️ Basic Information Identification Make: Komatsu Model: HM300-3 Product Type: Workshop Manual Codes Model Code: HM300-3 👋 Introduction Market Position Market Segment: Heavy Construction Equipment, Mining, and Earthmoving Target User: Komatsu Dealership Service Technicians, Fleet Maintenance Managers, Independent Heavy Equipment Repair Specialists Competitive Analysis Competitive Manuals: Manuals from competitors like Caterpillar (CAT), Volvo CE, John Deere Construction are similarly comprehensive but focus on their specific product lines and technologies. Key Features Repair Aid Quality: Prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and showing the correct way to perform repairs and make judgments. 📋 Manual Details Coverage Areas Primary Coverage: Repair and Maintenance Procedures Diagnostic Coverage: Troubleshooting and Diagnostic Strategies Disassembly Assembly: Component Disassembly and Reassembly Electrical Systems: Electrical System Schematics and Diagnostics Hydraulic Systems: Hydraulic System Component Repair and Calibration Page Count Estimated Page Count: Extensive (Typically 800-1200+ pages for comprehensive workshop manuals) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Drive Axles Hydraulic Control: Steering, Braking, Hoist System, Articulation System Electrical Control: ECU, Sensors, Wiring Harnesses, Indicators, Lighting Chassis Frame: Frame Structure, Articulation Bearings, Suspension Components Cooling Lubrication: Radiator, Oil Coolers, Lubrication Systems Operator Station: Cab interior, Controls, HVAC System Procedures Included Routine Maintenance: Lubrication schedules, Fluid checks and changes, Filter replacement Major Repair: Engine overhaul, Transmission rebuild, Hydraulic pump/motor repair Troubleshooting: Systematic diagnostic flowcharts, Fault code interpretation Calibration Adjustment: Hydraulic system calibration, Sensor adjustments, Engine control module programming Component Replacement: Step-by-step instructions for replacing major components Technical Depth Depth: Comprehensive: Covers routine maintenance, troubleshooting, diagnostics, and complete component overhaul/rebuild procedures. 📊 Manual Specifications File Format File Type: PDF Searchability: Text-searchable (OCR processed) Print Quality Image Resolution: High-resolution for clarity of diagrams and illustrations Diagram Clarity: Excellent clarity of exploded views, schematics, and diagnostic charts Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Model: Komatsu SAA6D125E-5 (or similar Tier III/IV compliant engine depending on production date) Engine Type: 6-Cylinder, Water-Cooled, Four-Stroke Diesel Engine with Turbocharger and Aftercooler Displacement: Approximately 19.0 Liters (1160 cu. in.) Performance Net Horsepower: Approx. 264 kW (354 HP) @ 1800 RPM Peak Torque: Approx. 1422 Nm (1048 lb-ft) @ 1400 RPM Fuel System Injection System: Common Rail Electronic Fuel Injection System Fuel Type: Diesel Fuel Lubrication Oil Capacity: Approximately 45 Liters (11.9 US gal) Cooling System Coolant Capacity: Approximately 55 Liters (14.5 US gal) 🔧 Transmission Standard Transmission Type: Komatsu Tractionplus Advanced Transmission (KTCS) Transmission Gears: Electronically Controlled, Planetary Powershift Transmission with 6 Forward / 6 Reverse Speeds Features Transmission Features: Automatic gear shifting, Neutral coast inhibitor, Torque converter lock-up, Tailored transmission settings for different operating modes (e.g., haul, dump) Fluid Specifications Transmission Fluid Type: Komatsu Genuine Transmission Oil Super (or equivalent DEXRON III/MERCON spec) Transmission Fluid Capacity: Approximately 30 Liters (7.9 US gal) 📐 Dimensions Exterior Overall Length: Approx. 10.5 m (34 ft 5 in) Overall Width: Approx. 3.2 m (10 ft 6 in) Overall Height: Approx. 3.5 m (11 ft 6 in) (to cab top) Cargo Payload Capacity: Approx. 25 metric tons (27.6 US tons) Body Capacity Heaped: Approx. 15.0 m³ (19.6 cu. yd.) Weights Operating Weight: Approx. 23,000 kg (50,700 lbs) 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) Certified Cab Falling Object Protection: FOPS (Falling Object Protective Structure) Certified Cab (Optional/Standard depending on configuration) Active Features Braking System: Full Hydraulic Wet Disc Service Brakes, Spring Applied Parking Brake Articulation Steering: Hydrostatic Power Steering with Automatic Return Passive Features Operator Station Features: Vibration-dampening cab mounting, Ergonomically designed controls, Seatbelt 💡 Technology Features Infotainment Infotainment System: N/A (Focus is on operational technology, not typical consumer infotainment) Driver Assistance Operational Assist: Komatsu's electronically controlled transmission (KTCS) optimizes gear selection and powertrain management for fuel efficiency and performance. Diagnostic Technology: On-board diagnostics (OBD) and electronic troubleshooting capabilities via diagnostic connectors and software. Connectivity Telematics Interface: Likely includes provisions for Komtrax telematics system (or similar) for remote monitoring of machine health, location, and operating parameters. 🔧 Maintenance Service Intervals Engine Oil Change: Every 500 operating hours (or as specified by Komatsu for specific operating conditions) Hydraulic Oil Change: Every 2000 operating hours (or based on oil analysis) Transmission Oil Change: Every 1000 operating hours (or as specified) Fluid Specifications Engine Oil Specification: API CI-4 or CH-4, SAE 15W-40 (check manual for specific viscosity and additive requirements based on ambient temperature) Hydraulic Oil Specification: Komatsu genuine hydraulic oil or ISO VG 46 (check manual for precise specifications) Known Issues Common Wear Items: Brake discs and pads, Articulation pin and bushing wear, Hydraulic hose wear, Engine belts, Filtration elements Potential Electrical Issues: Sensor failures, wiring harness chafing, ECU communication problems (common in all heavy equipment with advanced electronics)...