🏷️ Basic Information Identification Make: Datsun Model: 520 / 521 Truck Model Designation: Datsun Truck Series Generation Generation Code: First Generation (A120) Codes Chassis Code: A120 👋 Introduction Market Position Vehicle Segment: Light Commercial Vehicle / Pickup Truck Competitive Analysis Key Competitors: Toyota Stout, Ford Econoline Truck (early models), Chevrolet Apache (early models), Isuzu Elf Key Features Vehicle Strengths: Durable, reliable, practical, utilitarian design, good fuel economy for its class 📋 Manual Details Coverage Areas Applicable Years: 1965, 1966, 1967, 1968 Page Count Estimated Pages: Hundreds to Thousands (printable at high quality) Manual Type Type: Factory Service Repair Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinZip (for larger manuals) 📖 Manual Coverage Systems Covered Engine Service: Complete engine service and repair procedures Transmission Service: Complete transmission service and repair procedures (manual and potentially automatic if applicable) Brake System: Service, repair, and troubleshooting of the braking system Electrical System: Comprehensive coverage including wiring diagrams and component troubleshooting Suspension: Front and rear suspension component service and alignment Steering: Steering system components and repair Cooling System: Radiator, fan, water pump, and thermostat service Fuel System: Carburetor, fuel pump, lines, and tank service Chassis Body: Bodywork, frame, and chassis component repair Interior: Interior trim, seats, and dashboard component information Differential Drive: Rear axle and differential service Axle: Front and rear axle component service Fuel Injection: Service information for fuel injection systems (if equipped) Emission System: Information on emission control components and operation Heater Air Conditioner: Heater and A/C system service (if equipped) Engine Control System: Engine management and control system diagnostics and repair Restraint System: Information on seat belts and other passive safety features Procedures Included General Maintenance: Routine checks and maintenance procedures Troubleshooting: Diagnostic procedures and common problem solutions Periodic Lubrication: Lubrication points and schedules Wiring Diagrams: Detailed electrical system wiring diagrams Component Replacement: Step-by-step instructions for replacing various components Torque Specifications: Critical torque values for fasteners throughout the vehicle Technical Depth Depth: Comprehensive factory-level repair and diagnostic information 📊 Manual Specifications File Format Quality: High Quality Printable PDFs Searchability: Likely searchable text within PDF files Print Quality Print Readability: Excellent print quality for clarity of diagrams and text Binding Type Binding Format: Digital (PDF), no physical binding Paper Type Paper Quality For Printing: Suitable for standard printing paper ⚙️ Engine Specifications Primary Engine Engine Code: G1 Series (likely G12 or G14, as A12 was introduced later in the generation) Displacement Cc: Approximately 1171cc to 1288cc (G12 to G14) Cylinder Configuration: Inline 4-Cylinder Horsepower: Approximately 50-60 HP (depending on specific engine variant and tuning) Torque: Approximately 70-80 lb-ft (depending on specific engine variant) Fuel System Fuel Delivery: Carbureted (likely single barrel Hitachi or similar) Fuel Type: Unleaded Gasoline (or leaded depending on regional availability at the time) 🔧 Transmission Standard Transmission Type: 4-speed Manual Transmission Optional Transmission Type: 3-speed Automatic Transmission (less common, likely optional) Features Drive Layout: Rear-Wheel Drive (RWD) 📐 Dimensions Exterior Wheelbase Inches: Approx. 103.9 inches (2640 mm) Overall Length Inches: Approx. 166.3 inches (4225 mm) Overall Width Inches: Approx. 63.0 inches (1600 mm) Overall Height Inches: Approx. 61.6 inches (1565 mm) Weights Curb Weight Lbs: Approx. 2000-2200 lbs (depending on configuration) Payload Capacity Lbs: Approx. 1000-1200 lbs 🛡️ Safety Features Ratings Crash Test Standards: Vehicles from this era were not subject to the same rigorous crash test standards as modern vehicles. Active Features Braking System: Drum brakes on all wheels Passive Features Seatbelts: Lap belts (likely standard, shoulder belts optional or later additions) Body Construction: Body-on-frame construction for durability and load-bearing capacity 💡 Technology Features Infotainment Audio System: Basic AM radio (optional) Driver Assistance Driver Aids: None (typical for the era) Connectivity Connectivity Features: None 🔧 Maintenance Service Intervals Oil Change Interval Miles: Typically 3,000 miles or 3 months (consult manual for specific recommendations) Tune Up Interval Miles: 20,000-30,000 miles (including spark plugs, points, condenser) Fluid Specifications Engine Oil Type: SAE 10W-30 or 10W-40 (depending on climate) API Service SG or similar Coolant Type: Ethylene Glycol based antifreeze with distilled water (50/50 mix) Transmission Fluid Type: API GL-4 Gear Oil (e.g., 80W-90) Brake Fluid Type: DOT 3 or DOT 4 Known Issues Common Wear Items: Ignition system components (points, condenser, coil), carburetor wear, clutch wear, kingpins and bushings, rust and corrosion in body panels and frame. Typical Maintenance Tasks: Regular lubrication of suspension and steering components, valve adjustments, ignition timing checks. 📚 Vehicle History Brand Heritage Manufacturer Origin: Nissan Motor Co., Ltd., Japan Model Evolution Predecessor: Datsun 220 Series Truck Successor: Datsun 620 Truck Production Production Period: 1965-1968 Manufacturing Location: Japan 🏆 Awards & Recognition Recognitions Industry Awards: Not specifically documented for this model, but Datsun trucks were recognized for their reliability and value.