The David Brown 1390 is a robust agricultural tractor, a product of David Brown Tractors Ltd., originating from the United Kingdom. Likely produced during the 1970s and 1980s, this model is part of the esteemed '90' series, renowned for its durability and reliability in demanding agricultural environments. Engineered for powerful performance, the 1390 offers the essential functionality and operator control characteristic of its era, making it a dependable workhorse for a wide range of farming tasks. Its design emphasizes mechanical integrity and straightforward operation, reflecting a commitment to quality engineering. This comprehensive service manual provides all necessary information for the maintenance and repair of your David Brown 1390 tractor. It covers all service and repair aspects, detailing procedures for critical systems including the engine, transmission, brakes, electrical systems with wiring diagrams, suspension, steering, cooling, fuel, and emission systems. Additionally, it includes guidance on chassis, body, restraint systems, and axles, along with general maintenance, troubleshooting, disassembly, reassembly, refurbishment, and repair fixing. This manual is an indispensable resource for owner-operators, independent mechanics, and service technicians seeking to maintain the optimal performance and longevity of their David Brown 1390. 🏷️ Basic Information Identification Make: David Brown Model: 1390 Vehicle Type: Tractor Segment: Agricultural Machinery 👋 Introduction Market Position Value Proposition: Empowers owners to perform their own high-quality repairs, saving money and gaining in-depth knowledge. Competitive Analysis Advantage: Provides comprehensive repair instructions, troubleshooting guides, and electrical diagrams essential for maintaining the David Brown 1390. Key Features Accessibility: Instant download convenience for immediate access to repair information. Cost Effectiveness: Enables significant cost savings on repair and maintenance by eliminating the need for professional mechanics. Empowerment: Provides the necessary knowledge for users to confidently tackle repairs and maintenance. 📋 Manual Details Coverage Areas Primary Coverage: All Service and Repair Specific Systems: Engine, Transmission, Brakes, Electrical, Wiring Diagrams, Suspension, Lubrication, Steering, Cooling, Fuel System, Emission System, Engine Control, Chassis, Body, Restraint System, Axle Page Count Estimated Page Count: Extensive (specific number not provided in product info, but implied to be comprehensive) Manual Type Type: Service Manual / Repair Manual Language Language: English Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Engine Service Repair: Comprehensive engine overhaul, component diagnostics, and repair procedures. Transmission Service Repair: Detailed procedures for the tractor's transmission, including gearbox, clutch, and final drive systems. Brake System: Inspection, repair, and adjustment of the braking mechanisms. Wiring Diagram: Complete electrical wiring schematics for all vehicle systems. Electrical System: Troubleshooting and repair of starting, charging, lighting, and instrumentation circuits. Suspension: Service procedures for front and rear suspension components. Periodic Lubrication: Recommended lubrication points, intervals, and fluid types. Steering: Repair and adjustment of the steering system, including linkages and power steering components if applicable. Cooling System: Maintenance and repair of the radiator, water pump, thermostat, and associated plumbing. Fuel Injection Fuel System: Detailed diagnostics and repair for the fuel injection pump, injectors, and fuel delivery system. Emission System: Information on emission control components and potential servicing. Engine Control System: Diagnostics and repair related to engine management and control units. Chassis Body: Frame, body panels, and structural component repair. Restraint System: Information related to operator safety restraints. Axle: Service and repair of front and rear axles, including differentials. Procedures Included General Maintenance: Routine checks, fluid level adjustments, filter replacements, and general upkeep. Troubleshooting: Diagnostic flowcharts and symptom-based repair guidance for common and uncommon issues. Disassembly Reassembly: Step-by-step instructions for taking apart and putting back together major components and systems. Refurbishment Renovation: Guidance on restoring worn or damaged components to optimal working condition. Repair Fixing: Detailed instructions for fixing a wide array of mechanical and electrical problems. Technical Depth Depth Of Information: Comprehensive, covering everything from basic user maintenance to complete overhauls and advanced diagnostics. Target Audience: Owner-operators, independent mechanics, and service technicians. 📊 Manual Specifications File Format Format: PDF Software Requirements: Adobe PDF Reader, WinZip Compatibility: All Windows & Mac versions Print Quality Printability: Printable (implied by PDF format) Binding Type Binding: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Family: David Brown (likely Diesel) Engine Configuration: Likely inline 3 or 4 cylinder diesel (typical for this era and brand). Displacement: Specific displacement not provided, but typically in the 3.0-4.0 liter range for tractors of this class. Horsepower Rating: Specific HP not provided, but expected in the 70-90 HP range for a model designated '1390'. Performance Torque Output: Specific torque figures not provided, but engineered for robust pulling power. Fuel System Fuel Type: Diesel Injection Type: Likely mechanical direct injection (e.g., Simms or Lucas CAV). 🔧 Transmission Standard Transmission Type: Likely a manual gearbox with multiple forward and reverse gears. Optional Optional Features: Possibility of a 'Road Speed' or creeper gear option, common on agricultural tractors. Features Gear Selection: Typically a main gear lever and a range...