🏷️ Basic Information Identification Make: Komatsu Model: HD325-6 / HD405-6 Product Type: Operation & Maintenance Manual Applicable Serial Numbers: HD325-6: 6188 and up; HD405-6: 2087 and up 👋 Introduction Market Position Segment: Heavy-duty off-highway rigid dump trucks, primarily used in mining, construction, and quarrying applications. Competitive Analysis Key Competitors: Caterpillar (e.g., 730C), Volvo CE (e.g., A30G), Bell Equipment, John Deere Key Features Durability: Renowned Komatsu build quality, designed for extreme operating conditions. Operator Comfort: Designed with operator efficiency and comfort in mind for long work cycles. Productivity: High payload capacity and robust powertrain for efficient material transport. 📋 Manual Details Coverage Areas Primary Coverage: Operation, Handling, Lubrication, Maintenance, Troubleshooting Page Count Estimated Page Count: Comprehensive (Specific page count not provided in product data, but typical for O&M manuals is 300-600 pages) Manual Type Type: Operation & Maintenance Manual Language Language: English (assumed based on common industry practice for these models) Format Format: Digital (PDF likely, given the product description) 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Driveshaft, Final Drives, Differentials Hydraulics: Steering, Hoist System, Braking System (Power Assist), Cooling Fan Control Electrical: Starting System, Charging System, Lighting, Instrumentation, Control Systems Chassis: Frame, Suspension (Front & Rear), Steering linkage, Brakes (Service, Parking, Retarder), Wheels & Tires Operator Station: Cab structure, Seat, Controls, HVAC (if equipped) Body: Dump Body, Chassis Components, Guards Procedures Included Operation: Pre-operation checks, Starting procedures, Operating techniques, Travel procedures, Braking, Steering, Hoisting, Parking Maintenance: Lubrication schedule, Fluid level checks, Filter replacement, Component inspection, Adjustments Troubleshooting: Diagnostic charts, Symptom-based troubleshooting, Fault isolation procedures Handling: Safe transport, Storage, Lifting procedures Technical Depth Depth: Comprehensive for operators and maintenance personnel, covering routine checks, preventative maintenance, and basic troubleshooting. 📊 Manual Specifications File Format Digital Format: Likely PDF, optimized for digital viewing and printing. Print Quality Print Readability: High clarity diagrams, schematics, and text for accurate reproduction when printed. Binding Type Physical Format Considerations: If printed, expected to be bound for durability in a workshop environment (e.g., spiral or perfect bound). Paper Type Physical Format Considerations: If printed, high-quality, durable paper stock suitable for industrial environments. ⚙️ Engine Specifications Primary Engine Hd325 6 Engine Model: Komatsu SAA6D125E-5 (Turbocharged, Aftercooled, Direct Injection Diesel) Primary Engine Hd405 6 Engine Model: Komatsu SAA6D140E-3 (Turbocharged, Aftercooled, Direct Injection Diesel) Performance Hd325 6 Gross Horsepower: Approx. 330 HP (246 kW) @ 2000 RPM Net Horsepower: Approx. 300 HP (224 kW) @ 2000 RPM Performance Hd405 6 Gross Horsepower: Approx. 430 HP (320 kW) @ 2000 RPM Net Horsepower: Approx. 380 HP (283 kW) @ 2000 RPM Fuel System Injection Type: High-pressure common rail or electronically controlled unit injectors Emissions Compliance Standards: Typically meets EPA Tier III / EU Stage IIIA or equivalent emissions standards for the specified serial numbers. Cooling System Type: Water-cooled, with high-efficiency radiator and fan 🔧 Transmission Standard Type Hd325 6: Komatsu D77E-2, Full-automatic Powershift Transmission Type Hd405 6: Komatsu D77E-2, Full-automatic Powershift Transmission Gears Forward Gears: 5 Forward Reverse Gears: 1 Reverse Features Shift Control: Electronic control for optimal shift points and smooth operation Fluid Requirements Transmission Fluid Type: Komatsu Genuine Transmission Oil (or equivalent approved fluid, e.g., CAT TO-4) Transmission Fluid Capacity: Refer to manual for specific capacity, typically 20-30 Liters (5.3-7.9 US gal) 📐 Dimensions Exterior Hd325 6 Length: Approx. 9.4 m (30 ft 10 in) Width: Approx. 3.3 m (10 ft 10 in) Height: Approx. 3.6 m (11 ft 10 in) Exterior Hd405 6 Length: Approx. 9.7 m (31 ft 10 in) Width: Approx. 3.5 m (11 ft 6 in) Height: Approx. 3.7 m (12 ft 2 in) Cargo Hd325 6 Payload Capacity: Approx. 21.0 m³ (27.5 yd³) (Heaped) Rated Payload: Approx. 32,000 kg (70,550 lb) Cargo Hd405 6 Payload Capacity: Approx. 25.0 m³ (32.7 yd³) (Heaped) Rated Payload: Approx. 40,000 kg (88,200 lb) Weights Operating Weight Hd325 6: Approx. 24,000 kg (52,910 lb) Operating Weight Hd405 6: Approx. 30,000 kg (66,140 lb) Front Axle Load Hd325 6 Max: Refer to manual for loaded axle weights and distribution Rear Axle Load Hd325 6 Max: Refer to manual for loaded axle weights and distribution 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) cab is standard Fall Protection: FOPS (Falling Object Protective Structure) typically included Active Features Braking System: Full hydraulic dual-circuit service brakes with power assist; Integrated retarder for downhill speed control. Parking Brake: Spring-applied, hydraulically released parking brake Visibility: Large cab windows, strategically placed mirrors, and lighting systems for enhanced situational awareness. Passive Features Seatbelt: Operator seatbelt (3-point) Emergency Stop: Easily accessible emergency stop button 💡 Technology Features Infotainment Cabin Technology: Basic instrumentation focused on operational status. Advanced infotainment systems are not typical for this class of heavy equipment. Driver Assistance Operational Aids: Payload meter (optional), automated transmission controls, electronic monitoring systems for engine and transmission health. Connectivity Telematics: Some models may be equipped with or support...