The David Brown 1390 tractor, produced in the late 1970s and early 1980s, represents a robust and reliable piece of agricultural machinery. Known for its durability and performance, David Brown tractors of this era were highly regarded in their field. The 1390 model showcases advancements in design and technology from previous generations, offering a powerful diesel engine typically in the 70-80 HP range, suitable for a wide array of farming tasks. Its engineering quality is a testament to the manufacturer's heritage, which eventually became part of Tenneco. This comprehensive English-language Full Service Repair Manual provides extensive information for professional technicians and serious DIY mechanics working on the David Brown 1390. It covers all aspects of maintenance and repair, including detailed procedures for the engine, transmission, hydraulic system, electrical system, and more. The manual includes routine maintenance schedules, diagnostic troubleshooting guides, rebuilding instructions for major components, and detailed wiring diagrams. With its clear illustrations, step-by-step instructions, and emphasis on safety, this manual is an essential resource for maintaining the longevity and optimal performance of your tractor. 🏷️ Basic Information Identification Make: David Brown Model: 1390 Type: Tractor 👋 Introduction Market Position Target User Base: Professional technicians and serious DIY mechanics working on David Brown 1390 tractors. Competitive Analysis Value Proposition: Provides comprehensive, factory-level information equivalent to what professionals use, accessible instantly and without shipping costs. Key Features Navigational Aids: Numbered table of contents, bold figure numbers for quick illustration matching, detailed sub-steps, notes, cautions, and warnings. Visual Aids: Detailed illustrations, drawings, photos, and enlarged inset views for clear part identification and procedural guidance. Delivery Method: Instant Download 📋 Manual Details Coverage Areas Primary Coverage: Full Service Repair and Maintenance Page Count Estimated Page Count: Extensive (Specific count not provided, described as very detailed) Manual Type Manual Classification: Full Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine System: Detailed repair, rebuild, and overhaul procedures for the engine. Transmission System: Repair and maintenance of the gearbox, clutch, and associated components. Hydraulic System: Diagnosis and repair of the tractor's hydraulic system, including pumps, valves, and cylinders. Electrical System: Comprehensive coverage of electrical diagnostics, troubleshooting, and wiring diagrams. Braking System: Detailed procedures for brake system maintenance and repair. Cooling System: Maintenance and repair of the engine cooling system. Fuel System: Maintenance and repair of the fuel injection system and fuel delivery. Steering System: Diagnosis and repair of the steering mechanism. Power Take Off Pto: Maintenance and repair of the PTO system. Front Axle And Steering: Repair procedures for the front axle assembly and steering linkage. Rear Axle And Differential: Service and repair of the rear axle and differential components. Chassis And Frame: Information on chassis and frame maintenance and repair. Bodywork And Fenders: Procedures for bodywork repair and fender maintenance. Procedures Included Routine Maintenance: Includes service schedules, fluid changes, filter replacements, and lubrication points. Diagnostic Procedures: Extensive troubleshooting guides and diagnostic steps for various systems. Rebuilding Procedures: Detailed step-by-step instructions for rebuilding major components like engines and transmissions. Repair Procedures: Comprehensive guides for all common and uncommon repair tasks. Refurbishment Procedures: Guidance for restoring components and the overall tractor. Wiring Diagrams: Detailed electrical wiring diagrams for accurate troubleshooting and repairs. Troubleshooting Electrical: Specific procedures for diagnosing and rectifying electrical faults. Technical Depth Depth Of Coverage: Designed for professional technicians, with adequate data for DIY mechanics, covering everything from basic maintenance to complete rebuilds. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Full Printable (All pages) Binding Type Binding Method: Digital Download (Printable) Paper Type Digital Format Details: Digital file, can be burned to CD-ROM or saved to hard drive. ⚙️ Engine Specifications Primary Engine Engine Manufacturer: David Brown (Likely derived from Perkins or similar, details within manual) Engine Type: Diesel Engine Configuration: Likely inline 3 or 4 cylinder diesel, specific details in manual. Engine Displacement: Not explicitly stated in product info, but typically around 3.0-4.0 liters for this model class. Performance Horsepower Rating: Typically in the 70-80 HP range for the 1390 series. Torque Rating: Specific figures depend on engine variant, detailed in manual. Fuel System Injection System: Likely mechanical direct injection or indirect injection, detailed in manual. 🔧 Transmission Standard Transmission Type: Likely a multi-speed gearbox with options for synchronization (e.g., Selectamatic, Hydroshift). Gear Configurations: Multiple forward and reverse gears, specific counts and ratios detailed in manual. Features Clutch Type: Dual-stage dry clutch or single-stage clutch, details provided. Drive System: Two-wheel drive (2WD) standard, 4WD may have been optional depending on exact configuration. 📐 Dimensions Exterior Overall Length: Typical for tractors of this era, specific dimensions in manual. Overall Width: Variable based on tire size and configuration, details in manual. Wheelbase: Specific measurement provided in manual. Weights Operating Weight: Typically around 2500-3500 kg, exact figures in manual. Towing Capacity: Detailed in manual based...