🏷️ Basic Information Identification Make: David Brown Model: 850, 880, 950, 990 Series Implematic Product Type: Complete Workshop Service Repair Manual 👋 Introduction Market Position Market Position: Essential documentation for owners and mechanics of David Brown 850, 880, 950, and 990 Series Implematic tractors, enabling cost-effective self-maintenance and repair. Competitive Analysis Competitive Analysis: This manual provides the crucial technical details that allow users to bypass the need for expensive dealer servicing, making it a highly valuable resource for maintaining these classic agricultural machines. Key Features Key Features: Comprehensive coverage, step-by-step instructions, clear diagrams and pictures, instant delivery, multi-device compatibility, printable format, lifetime ownership. 📋 Manual Details Coverage Coverage Areas: All service and repair procedures A-Z, all models, engines, trim, and transmission types. Page Count Page Count: Not explicitly stated, but described as 'complete' and 'covers all repair procedures A-Z'. Manual Type Manual Type: Workshop Service Repair Manual Language Language: English (assumed based on description language) Format Format: PDF Download 📖 Manual Coverage Systems Covered Systems Covered: Engine, Fuel System, Cooling System, Lubrication System, Electrical System, Ignition System, Clutch, Transmission (Gearbox), Final Drive, Rear Axle, Power Take-Off (PTO), Hydraulic System (including Implematic linkage), Steering System, Braking System, Front Axle, Chassis, Bodywork, Controls, Instrumentation, Troubleshooting. Procedures Included Procedures Included: Step-by-step instructions for all servicing and repair jobs, diagnostics, adjustments, overhauls, rebuilds, component replacement, and scheduled maintenance. Technical Depth Technical Depth: Comprehensive, from basic maintenance and adjustments to complete engine and transmission rebuilds, hydraulic system diagnostics and repair, and electrical system troubleshooting. Diagnostics Diagnostic Procedures: Includes procedures for diagnosing common mechanical, hydraulic, and electrical faults, often with flowcharts or symptom-based troubleshooting. Rebuilds Engine Rebuild Details: Detailed instructions for engine disassembly, component inspection (e.g., cylinder bore, crankshaft journals), fitting new parts, and reassembly, including bearing clearances and ring end gap specifications. Transmission Rebuild Details: Comprehensive guide for gearbox disassembly, inspection of gears, shafts, bearings, and synchromesh components, along with assembly procedures and lubrication points. Hydraulic System Hydraulic System Coverage: In-depth coverage of the Implematic hydraulic pump, control valve, lift arms, draft control system, and associated pipework and seals. Electrical System Electrical System Diagrams: Includes wiring diagrams for lighting, starting, charging, and instrumentation systems, with component identification. Torque Specifications Torque Settings Engine: Specific torque values for critical engine fasteners such as cylinder head bolts, connecting rod bolts, main bearing caps, and flywheel nuts. Torque Settings Transmission: Torque specifications for transmission case bolts, differential housing, and other drivetrain components. Parts Identification Parts Identification Details: While not a parts catalog, the manual will identify key components and their functions, aiding in parts ordering. Technical Data Tables Technical Data Tables: Likely includes tables for engine specifications, fluid capacities, bearing clearances, and other essential technical data. Schematics Schematics Included: Flow diagrams for hydraulic systems and electrical schematics are standard in such manuals. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High Quality, supports printing of individual pages, chapters, or the entire manual. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Software Requirements Software Requirements: Adobe Reader (or compatible PDF reader) ⚙️ Engine Specifications Primary Engine Engine Type: David Brown diesel engines (typically AD4/45, AD4/55, AD4/65 variations across models). Performance Horsepower Range: Varies by specific model and engine variant (e.g., 850 series typically 35-45 HP, 950/990 series 45-65 HP). Torque Specifications: Detailed torque settings for critical engine components (e.g., cylinder head bolts, main bearing caps) will be found within the manual. Fuel System Fuel System Type: Direct injection diesel, typically utilizing Simms or CAV fuel injection pumps. Lubrication System Oil Capacity Approx: Capacity details and oil type specifications (e.g., API CD or equivalent) will be provided for each engine variant. Cooling System Cooling System Type: Water-cooled, pressurized system with a thermostat. Maintenance Valve Clearance Spec: Precise cold valve clearance specifications for intake and exhaust valves will be detailed for each engine. 🔧 Transmission Standard Transmission Type: David Brown designed constant mesh gearbox with a multi-speed range selector. Optional Optional Features: Some models may have offered creeper gears or alternative PTO options. Features Implematic System: The manual covers the operation, maintenance, and repair of the 'Implematic' hydraulic draft control and linkage system, a key feature of these tractors. Maintenance Transmission Fluid Type: Specific recommendations for transmission and hydraulic oil (e.g., SAE 80W/90 GL-4 or dedicated tractor hydraulic fluid) will be detailed. 📐 Dimensions Exterior Wheelbase: Varies by specific model, but generally in the range of 75-85 inches (approx. 1900-2150 mm). Weights Operating Weight Approx: Typically ranges from 3500 to 4500 lbs (approx. 1590 to 2040 kg), depending on configuration. 🛡️ Safety Features Ratings Safety Ratings: N/A (Tractor safety standards and ratings were different during their production era compared to modern vehicles). Active Features Active Safety Features: Basic mechanical braking system, differential lock (optional/standard on some models). Passive Features Passive Safety Features:...