🏷️ Basic Information Identification Make: David Brown Model: 1390 Product Type: Service Repair Manual Product Format: PDF Download 👋 Introduction Market Position Target Audience: Do-it-yourself owners and experienced mechanics Competitive Analysis Advantage Over Print: More convenient, less expensive, printable selectively Key Features Completeness: Complete official full factory service repair manual Accessibility: Downloadable, accessible on multiple devices Cost Effectiveness: Inexpensive way to keep vehicle working properly, saves on mechanic costs Durability: Digital format avoids wear and tear of paper manuals 📋 Manual Details Coverage Areas General Information: True Specifications: True Engine: True Cooling System: True Fuel System: True Power Train: True Front Axle: True Clutch: True Differential Lock: True Electrical System: True Brakes: True Fenders Fuel Tank Platform: True Final Drive: True Front System: True Front Wheel Drive: True Hydraulic System: True Main Drive Bevel Gears Differential: True Park Brake: True Power Steering System: True Power Take Off: True Rear Axle: True Steering Gear: True Transmission: True Page Count Estimated Pages: Hundreds Manual Type Type: Factory Service Repair Workshop Manual Language Language: English Format File Format: PDF Compatibility: Windows, Mac, Smartphones, Tablets (via browser) Printability: Yes (all pages) Software Requirements PDF Reader: Adobe PDF Reader (Free) Compression Utility: Winzip (Free) 📖 Manual Coverage Systems Covered Powertrain Systems: Engine, Cooling System, Fuel System, Clutch, Transmission, Power Take-Off, Final Drive, Rear Axle, Front Axle, Front-Wheel Drive Chassis And Body Systems: Brakes, Steering Gear, Power Steering System, Fenders, Fuel Tank & Platform, Front System Electrical And Hydraulic Systems: Electrical System, Hydraulic System Procedures Included Repair Procedures: Complete disassembly and reassembly instructions Maintenance Procedures: Standard maintenance, routine checks, lubrication Troubleshooting: Implied through detailed explanations and diagnostics Technical Depth Depth Level: Comprehensive factory-level detail, suitable for DIY and experienced mechanics Illustrations: Hundreds of photos and illustrations Documentation Style: Step-by-step instructions 📊 Manual Specifications File Format Digital Format: PDF Print Quality Print Feature: Printable pages Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Diesel (details vary based on specific 1390 sub-model, likely British Leyland/Perkins origin) Performance Displacement: Typically around 3.5 - 4.0 Liters (common for David Brown tractors of this era, e.g., 3.5L 4-cylinder or 4.0L 4-cylinder Perkins variants) Horsepower Range: Approx. 70-80 PTO horsepower (estimated for the 1390 model) Torque: Details not provided, but would be robust for agricultural applications Fuel System Fuel Type: Diesel Injection System: Direct Injection (typical for diesel engines of this period) 🔧 Transmission Standard Transmission Type: Manual (likely David Brown's own gearbox, possibly with synchromesh) Features Gear Options: Multiple forward and reverse gears (specific count varies, but commonly 12 forward x 4 reverse or similar options with a high/low range) 📐 Dimensions Weights Operating Weight: Approx. 3500-4000 kg (estimated for tractor only, without ballast) 💡 Technology Features Infotainment Features: Basic operator controls, analog gauges (no modern infotainment) 🔧 Maintenance Service Intervals Engine Oil Change: Refer to manual for specific interval (typically 250-500 hours for diesel) Hydraulic Oil Change: Refer to manual for specific interval (typically annual or 500-1000 hours) Fluid Specifications Engine Oil: Refer to manual (likely API CD or CE grade, SAE 15W-40 or 20W-50) Hydraulic Transmission Oil: Refer to manual (likely UTF - Universal Tractor Transmission Fluid or specific David Brown approved oil, e.g., Case/IH Hy-Tran) Coolant: Refer to manual (typically ethylene glycol based antifreeze mixture) Known Issues Common Wear Points: Clutch wear, hydraulic pump efficiency, seal leaks, PTO clutch wear Electrical Concerns: Wiring harness degradation, starter motor issues (common in older machinery) 📚 Vehicle History Brand Heritage Manufacturer: David Brown Tractors Ltd., UK (later part of Tenneco International/Case IH) Model Evolution Production Period: Likely late 1970s to early 1980s Production Manufacturing Location: Meltham, Yorkshire, UK (primary) 🏆 Awards & Recognition Recognitions Industry Standing: David Brown tractors were known for robust build quality and strong engines