🏷️ Basic Information Identification Make: Nuffield Model: Universal Three 3 Vehicle Type: Tractor 📋 Manual Details Coverage Areas Manual Type: Workshop Service Manual Page Count Page Count: 428 Language Language: English Format File Format: PDF Download Type: Instant Download Print Quality Printable: True Compatibility Os Compatibility: Windows, Mac, Linux Requirement Required Software: Adobe Reader 📖 Manual Coverage Systems Covered Engine Systems: Engine disassembly, assembly, troubleshooting, diagnostics, internal components, cooling system, lubrication system, fuel system, exhaust system, ignition system (if applicable to diesel). Transmission Systems: Gearbox removal, installation, disassembly, assembly, adjustments, troubleshooting, identification of components. Hydraulic Systems: Hydraulic pump, lift mechanism, control valve, hydraulic cylinders, fluid specifications, troubleshooting, repair procedures. Electrical Systems: Wiring diagrams, starter motor, alternator, battery, lighting systems, troubleshooting of electrical faults. Chassis And Suspension: Front axle, steering system, rear axle, differential, braking system, wheels, tires, adjustments and repairs. Bodywork And Controls: Operator controls, seat, fenders, minor body panel repairs, adjustments. Procedures Included Maintenance: Periodic maintenance, lubrication, fluid checks and changes, filter replacements, general servicing. Repair: Detailed step-by-step repair procedures for all major and minor components. Troubleshooting: Diagnostic procedures, identification of common faults, corrective actions. Adjustments: Valve clearance, brake adjustments, clutch adjustments, hydraulic controls adjustments, steering system adjustments. Removal And Installation: Comprehensive instructions for removing and reinstalling all major components and systems. Disassembly And Assembly: Detailed instructions for taking apart and putting back together individual components. Technical Depth Depth: Comprehensive, including component-level rebuilds and advanced diagnostics. Diagrams Illustrations And Diagrams: Pictorial diagrams, exploded diagrams, drawings, and photos for clarity. Tools Special Tools: Reference to special service tool numbers and their usage. Specifications Tightening Torques: Detailed torque specifications for various fasteners. Wear Limits: Specifications for acceptable wear limits on critical components. Information Type Construction And Function: Explanations of component construction and operational principles. Service Data: Essential service data, precautions, and important notes. ⚙️ Engine Specifications Primary Engine Engine Type: Diesel Engine Family: Likely BMC (British Motor Corporation) diesel engines, common in Nuffield tractors of this era. Performance Displacement: Typically around 2.5 - 3.0 liters (Exact displacement specific to Universal Three 3 variant would be detailed in manual). Horsepower: Expected range of 35-45 HP (Exact figures dependent on specific engine variant). Torque: Specifications detailed in the manual. Fuel System Fuel Type: Diesel Injection System: Mechanical injection system. Cooling System Cooling Type: Water-cooled Lubrication System Oil Capacity: Specifications detailed in the manual. Oil Type: Specifications detailed in the manual (likely diesel engine oil). 🔧 Transmission Standard Transmission Type: Manual gearbox Gear Configuration: Likely 3 or 4 forward gears plus reverse, with a high/low range selector. Features Power Take Off Pto: Standard PTO operation and maintenance covered. Differential Lock: Operation and maintenance of the differential lock system (if equipped). 📐 Dimensions Exterior Wheelbase: Specifications detailed in the manual. Length: Specifications detailed in the manual. Width: Specifications detailed in the manual. Weights Operating Weight: Specifications detailed in the manual. Towing Capacity: Specifications detailed in the manual. 🛡️ Safety Features Ratings Rollover Protection: While not always standard from factory in this era, the manual would likely cover modifications or checks for any fitted ROPS. Active Features Braking System: Drum brakes or disc brakes (depending on specific model variant), hydraulic actuation. Maintenance and adjustment procedures covered. Passive Features Operator Station: Information on safe operation and adjustments of controls. 💡 Technology Features Infotainment Radio Availability: Not a standard feature for this tractor model; basic functionality. Driver Assistance Instrumentation: Basic dashboard gauges for oil pressure, coolant temperature, fuel level, ammeter. Connectivity Electronic Systems: Minimal to no electronic control units (ECUs) in the modern sense; purely mechanical and electrical systems. 🔧 Maintenance Service Intervals Engine Oil Change: Typically 250 hours or annually, specified in manual. Hydraulic Fluid Change: Intervals and procedures detailed in manual. Greasing Points: Daily/weekly greasing schedule detailed. Fluid Specifications Engine Oil Grade: Refer to manual for specific SAE viscosity grade (e.g., SAE 20W-30 or 15W-40 depending on climate). Hydraulic Fluid Type: Specifications detailed in manual (likely tractor hydraulic fluid). Coolant Type: Water with appropriate antifreeze additive as per manual. Known Issues Common Wear Points: Wear on clutch, brake components, hydraulic seals, and PTO splines are common. Engine Common Faults: Glow plug issues, fuel injection pump wear, starter motor problems, cooling system leaks. 📚 Vehicle History Brand Heritage Manufacturer Origin: British Parent Company: Associated with the British Motor Corporation (BMC) tractor division. Model Evolution Production Period: Likely produced in the 1960s. Series Context: Part of the Nuffield 'Universal' tractor range, designed for general farm work. Production Manufacturing Location: United Kingdom