This service repair workshop manual covers David Brown 770, 870, 970, 1070, 1090, 1170, and 1175 tractor models. These tractors, produced in the United Kingdom from the mid-1960s through the early 1970s, are recognized for their robust construction and reliability in agricultural applications. They feature various David Brown diesel engines, ranging from approximately 30 HP to over 70 HP, and are equipped with David Brown constant mesh gearboxes and the Selectamatic hydraulic transmission system. The manual provides comprehensive information to ensure these dependable machines continue to perform optimally. This extensive manual offers factory-level technical information for all repairs, servicing, and troubleshooting procedures. It covers engine overhaul, fuel and lubrication systems, transmission components, hydraulics, electrical systems, chassis, steering, and operator station. Detailed instructions for routine maintenance, diagnostic troubleshooting, and component repair and reassembly are included, alongside essential technical specifications such as torque values and fluid capacities. This resource is designed to assist David Brown tractor owners, mechanics, agricultural workshops, and restoration specialists in maintaining and repairing their vehicles effectively. 🏷️ Basic Information Identification Make: David Brown Model: 770, 870, 970, 1070, 1090, 1170, 1175 Product Type: Service Repair Workshop Manual 👋 Introduction Market Position Target Audience: David Brown tractor owners, mechanics, agricultural workshops, restoration specialists Competitive Analysis Value Proposition: Provides comprehensive, factory-level technical information for DIY repairs and professional servicing, saving significant costs compared to dealership services. Key Features Content Richness: Hundreds of pages with detailed photos, diagrams, and step-by-step instructions. Accessibility: Instant download, usable on multiple devices, lifetime access. 📋 Manual Details Coverage Areas Primary Coverage: All repairs, servicing, and troubleshooting procedures Page Count Estimated Page Count: Hundreds of pages (specific count not provided, but described as extensive) Manual Type Type: Factory Service Repair Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Comprehensive engine overhaul, diagnostics, tuning, fuel system, lubrication system, cooling system Transmission: Gearbox overhaul, clutch, PTO, differential, final drives, hydraulic transmission components Hydraulics: Hydraulic pump, control valves, lift arms, auxiliary hydraulic circuits, troubleshooting Electrical System: Wiring diagrams, starter motor, alternator, battery, lighting, instrumentation, troubleshooting Chassis And Steering: Front axle, rear axle, steering system, brakes (mechanical and hydraulic), wheel alignment Bodywork And Operator Station: Sheet metal repair, operator seat, controls, fenders, guards Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, inspections, adjustments Diagnostic Troubleshooting: Step-by-step troubleshooting guides for common and complex issues Repair And Rebuild: Detailed instructions for component disassembly, repair, and reassembly Technical Specifications: Torque values, clearances, fluid capacities, specifications for all systems Technical Depth Depth: Professional-grade, suitable for mechanics and technicians; covers complete rebuilds and advanced diagnostics 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Printable (single pages or entire manual) Binding Type Binding: Digital Download (no physical binding) Paper Type Paper Quality: N/A (digital format) Software Compatibility Operating Systems: Compatible with all Windows and MAC computers Licensing Usage License: Lifetime use on unlimited computers; no expiry dates or renewal fees ⚙️ Engine Specifications Primary Engine Engine Type: Various David Brown diesel engines (details vary by model) Performance Horsepower Range: Approximately 30 HP (770) to over 70 HP (1070, 1170, 1175) - specific ratings vary by model and engine option. Manual covers all these variations. Torque Specifications: Detailed torque specifications for all engine components are provided. Fuel System Fuel Type: Diesel Injection System: Details on CAV, Lucas, or other applicable diesel injection pump systems and injectors Lubrication System Oil Capacity: Specific oil capacities for various engine models are included in the manual. Cooling System Coolant Type: Specifications for appropriate coolant mixtures and types are detailed. 🔧 Transmission Standard Gearbox Type: David Brown constant mesh gearboxes, David Brown Selectamatic hydraulic transmission Optional Pto Options: Live PTO, ground speed PTO configurations detailed Features Hydraulic Lift: Detailed operation and servicing of the Selectamatic hydraulic system, including draft control and position control. Fluid Specifications Transmission Oil Type: Specific recommendations for hydraulic oil and transmission lubricants are provided. 📐 Dimensions Exterior Wheelbase: Varies by model (e.g., approx. 80-90 inches for 770/870 series) - detailed specs in manual. Weights Operating Weight: Varies by model (e.g., approx. 4000-6000 lbs) - detailed specs in manual. 🛡️ Safety Features Passive Features Operator Station: Information on safety guards, PTO covers, and operator controls for safe operation. 💡 Technology Features Infotainment Instrumentation: Details on the dashboard gauges and warning lights for engine monitoring and diagnostics. Driver Assistance Traction Control: N/A for this era of tractor, focus is on mechanical systems. 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 100 or 250 operating hours, depending on application and oil type. Manual provides exact schedule. Hydraulic Fluid Change: Recommended intervals for hydraulic and transmission fluid changes are detailed. Air Filter Maintenance: Procedures for cleaning and replacement of air filters are covered. Fluid Specifications Engine Oil Viscosity: Manual specifies recommended SAE viscosity grades for various operating temperatures (e.g.,...