🏷️ Basic Information Identification Make: Datsun Model: 520 / 521 Truck Years Covered: 1965, 1966, 1967, 1968 👋 Introduction Market Position Vehicle Segment: Light-duty pickup truck, popular for its utility and affordability. Competitive Analysis Competitors: Ford Falcon, Chevrolet Apache/C-Series, Dodge D-Series, Toyota Stout, Volkswagen Type 2 (Kombi/Bus). Key Features Manual Value Proposition: Provides professional-grade, detailed repair information, enabling users to perform complex maintenance and repairs efficiently and accurately. Manual Features Accessibility: Instant download, accessible on smartphones for on-the-go repair guidance. Ease Of Use: Easy-to-read text, step-by-step instructions, and highly detailed exploded views and diagrams. 📋 Manual Details Coverage Areas Region: Global (primarily North American market focus inferred from description) Page Count Estimated Pages: High (comprehensive service manual, likely 500+ pages) Manual Type Type: Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete service, diagnostics, and repair for all engine variants used in 520/521 series. Fuel System: Carburetor service, fuel pump, fuel lines, tank, and emissions control systems. Ignition System: Distributor, ignition coil, spark plugs, timing, and troubleshooting. Cooling System: Radiator, water pump, thermostat, hoses, and fan assembly. Lubrication System: Oil pump, oil filter, oil pan, and lubrication passages. Transmission: Service and repair for manual transmissions (likely 4-speed) and any automatic variants if applicable. Drivetrain: Clutch system, driveshaft, rear axle, differential, and wheel bearings. Suspension: Front independent suspension (likely torsion bar), rear leaf springs, shock absorbers, and bushings. Steering: Steering gearbox, tie rods, steering linkage, and wheel alignment specifications. Brakes: Front drum brakes, rear drum brakes, master cylinder, wheel cylinders, brake lines, and parking brake system. Electrical System: Battery, charging system (alternator/generator), starter motor, lighting system, wiring diagrams, fuses, and relays. Body And Chassis: Frame, body panels, doors, windows, seats, interior trim, and exterior trim components. Heating And Ventilation: Heater core, blower motor, and vent controls. Procedures Included Maintenance: Oil changes, fluid checks and replacements, filter changes, tune-ups, and lubrication. Troubleshooting: Diagnostic procedures for common problems across all systems, including symptom-based troubleshooting guides. Repair: Step-by-step instructions for component removal, disassembly, inspection, repair, and reassembly. Overhaul: Complete engine, transmission, and differential overhaul procedures. Adjustment: Carburetor adjustments, ignition timing, valve lash, brake adjustments, and clutch adjustments. Wiring Diagrams: Detailed electrical system wiring schematics for comprehensive diagnostic and repair. Technical Specifications: Torque specifications, clearances, fluid capacities, and performance data. Technical Depth Depth: Comprehensive, from basic maintenance to complete engine and drivetrain rebuilds, suitable for professional mechanics and advanced DIYers. 📊 Manual Specifications File Format Compatibility: PDF format, recommended for viewing with Adobe Acrobat Reader for optimal image display. Print Quality Image Quality: High quality diagrams and illustrations, ensuring clarity for repair procedures. Binding Type Binding: Digital (PDF) - no physical binding. Paper Type Paper Type: Not applicable (Digital PDF) - allows for printing on demand, preventing damage to original manuals. ⚙️ Engine Specifications Primary Engine Engine Code: Likely variants of the Nissan A-series engine (e.g., A12 or similar displacement). Displacement: Commonly around 1.2L to 1.5L for this era of Datsun light trucks. Configuration: Inline 4-cylinder, overhead valve (OHV). Performance Horsepower: Estimated 50-70 hp (exact figures vary by specific engine and tune). Torque: Estimated 70-85 lb-ft (exact figures vary by specific engine and tune). Fuel System Carburetor: Single barrel downdraft carburetor (e.g., Hitachi or Solex type). Fuel Type: Regular Unleaded Gasoline. 🔧 Transmission Standard Type: 4-speed manual transmission. Optional Type: Unlikely for this early model, manual was standard. Features Gear Ratios: Specific gear ratios will be detailed within the manual for optimal performance and towing. Fluid Type: Gear oil, likely GL-4 specification (e.g., SAE 80W-90). 📐 Dimensions Exterior Body Styles: Short bed regular cab, long bed regular cab. Wheelbase: Approximately 104 inches for short bed, 116 inches for long bed. Weights Curb Weight: Ranging from approximately 2,000 to 2,300 lbs. Payload Capacity: Typically around 1000-1500 lbs, depending on configuration. 🛡️ Safety Features Ratings Crash Testing: No formal crash ratings available for this era of vehicle as per modern standards. Active Features Brakes: Hydraulic drum brakes on all four wheels. Passive Features Seatbelts: Likely lap belts as standard, shoulder belts may have been optional or dealer-installed. 💡 Technology Features Infotainment Radio: Likely a basic AM radio, possibly with a dealer-installed FM converter or aftermarket unit. Driver Assistance ABS: Not equipped. Connectivity Bluetooth: Not equipped. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000 miles or 3 months, whichever comes first. Tune Up Interval: Recommended every 10,000-12,000 miles, including spark plugs, points, and condenser. Fluid Specifications Engine Oil Type: API SF or SG rated oil, viscosity SAE 10W-30 or 10W-40 recommended for most conditions. Engine Oil Capacity: Approximately 3.5-4 quarts with filter change (exact capacity in manual). Coolant Type: Ethylene glycol based antifreeze, typically a 50/50 mix with distilled water. Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid. Known Issues Rust: Common susceptibility to rust,...