🏷️ Basic Information Identification Make: David Brown Model: 1390 Type: Tractor Product Name: David Brown 1390 WSM Service Manual Repair 👋 Introduction Market Position Target User: Tractor owners, mechanics, agricultural workshops Competitive Analysis Value Proposition: Enables self-repair, saving significant costs on professional servicing Key Features Ease Of Use: Easy-to-follow step-by-step instructions, pictures, and diagrams Comprehensiveness: Covers all services, repairs, and routine maintenance Accessibility: Digital format with printable pages for workshop use 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Routine Maintenance, Troubleshooting, Wiring Diagrams Page Count Estimated Page Count: Likely extensive, typical for comprehensive service manuals (exact count not provided in product info) Manual Type Type: Workshop Manual (WSM) / Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed repair, overhaul, and troubleshooting of the engine Fuel System: Carburetor/injection system, fuel pump, filters, lines Cooling System: Radiator, water pump, thermostat, hoses, fan Lubrication System: Oil pump, oil filter, oil passages, lubrication points Transmission: Gearbox overhaul, clutch, PTO, differential, final drives Hydraulics: Hydraulic pump, valves, cylinders, linkages, hitch system Electrical System: Starting system, charging system, lighting, ignition (if applicable), wiring diagrams Steering: Power steering system, steering linkages, wheels Brakes: Brake system components, adjustments, and repair Axles: Front and rear axle assemblies, hubs, bearings Bodywork: Fenders, hood, operator station, sheet metal repair Procedures Included Maintenance: Scheduled maintenance, lubrication, filter replacement Diagnostics: Troubleshooting guides for common and uncommon problems Repair: Step-by-step repair procedures for all major components Overhaul: Complete engine, transmission, and hydraulic system overhauls Adjustment: Component adjustments (e.g., valve clearances, brake pedal) Installation: Procedures for replacing major components and accessories Technical Depth Depth: In-depth, professional quality with step-by-step instructions, pictures, and wiring diagrams 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: Full Printable Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Requirements Software Requirement: Adobe PDF Reader Compatibility Operating Systems: All Versions of Windows & Mac Delivery Method Delivery: Instant Download ⚙️ Engine Specifications Primary Engine Engine Type: Diesel Engine Family: Perkins (common for this era of David Brown) Cylinders: Typically 4 or 6 cylinders for this model range Displacement: Likely in the range of 3.5 - 4.5 liters, depending on specific variant (e.g., 3.5L for 1390) Performance Horsepower: Approximately 70-80 PTO HP (exact figures vary by specific engine tune and year) Torque: Significant low-end torque, characteristic of diesel engines of this era Fuel System Injection System: Typically Lucas CAV or similar mechanical injection pumps Fuel Type: Diesel Fuel 🔧 Transmission Standard Transmission Type: David Brown Split-Torque Transmission (DHT) or similar manual gearbox Gears: Multiple forward and reverse gears, often with a synchronized mainbox and a high/low range splitter or powershift Optional Optional Features: Variations in PTO speeds, potentially creeper gears Features Pto: Standard 540/1000 RPM PTO, likely with independent engagement 📐 Dimensions Exterior Wheelbase: Typical for a tractor of this class, approximately 80-90 inches (specific value needed from manual) Weights Operating Weight: Approx. 6,000-7,000 lbs (unladen, varies with configuration) Max Allowable Weight: Significantly higher with ballast and implements 🛡️ Safety Features Ratings Safety Features: ROPS (Roll-Over Protective Structure) likely standard or optional depending on year and market, seatbelts Active Features Braking System: Drum or disc brakes (rear), independent braking, park brake Passive Features Operator Station: Designed for operator safety and visibility 💡 Technology Features Infotainment Operator Interface: Basic mechanical controls, gauges for oil pressure, water temperature, fuel level, ammeter. Driver Assistance Assistance Features: None beyond standard operational controls; emphasis on mechanical functionality. Connectivity Connectivity Options: N/A (Pre-digital era tractor) 🔧 Maintenance Service Intervals Engine Oil Change: Typically 100-250 hours, depending on operating conditions and oil type (refer to manual for specifics) Air Filter Check: Check daily or weekly; replace as needed Fuel Filter Replacement: Typically 250-500 hours or annually Fluid Specifications Engine Oil Type: API CD/CE or equivalent, SAE 15W-40 or 30 (verify with manual) Hydraulic Fluid: UTTO (Universal Tractor Transmission Oil) or approved hydraulic oil (verify viscosity and spec with manual) Coolant: Ethylene glycol based antifreeze with corrosion inhibitors, 50/50 mix with distilled water Known Issues Common Wear Points: Hydraulic pump wear, clutch wear, PTO spline wear, front axle kingpins Electrical Concerns: Older wiring harnesses can degrade; alternator/generator issues possible 📚 Vehicle History Brand Heritage Manufacturer History: David Brown Tractors was a British manufacturer known for robust and reliable agricultural machinery. Model Evolution Model Lineage: The 1390 was part of David Brown's later range, offering increased power and features over earlier models. Production Production Period: Likely produced in the late 1970s and early 1980s. Manufacturing Location: United Kingdom 🏆 Awards & Recognition Recognitions Industry Recognition: David Brown tractors of this era were generally well-regarded for their workhorse capabilities and durability.