🏷️ Basic Information Identification Make: Fiat Model: 680 / 680DT Product Type: Workshop Service Repair Manual Product Format: PDF Download 👋 Introduction Market Position Target Audience: Do-it-yourself tractor owners and experienced mechanics. Competitive Analysis Value Proposition: Cost-effective solution for vehicle maintenance and repair, saving money on labor and parts. Key Features Manual Usability: Numbered instructions, bold figure numbers, detailed illustrations, notes, cautions, and warnings enhance ease of use and safety. Electrical Diagnostics: Combined troubleshooting procedures and detailed wiring diagrams simplify electrical system repairs. Completeness: Official, complete factory service manual covering all aspects of the Fiat 680-680DT tractor. 📋 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 Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Engine overhaul, diagnostics, cooling system service, fuel system (carburetor/injection), lubrication system. Drivetrain Systems: Clutch service, transmission repair, differential and final drive overhaul, front axle and front-wheel drive systems, PTO operation and repair. Chassis Systems: Brake system service (including park brake), steering gear maintenance and repair, hydraulic system diagnostics and component service. Electrical Systems: Complete electrical system troubleshooting, wiring diagrams, starter, alternator, lighting, and accessory circuits. Body And Controls: Fenders, fuel tank, and platform service and removal. Procedures Included Maintenance: Regular servicing, fluid changes, filter replacements, lubrication points. Troubleshooting: Diagnostic procedures for common and uncommon faults across all systems, with specific guidance for electrical issues. Repair: Step-by-step instructions for component disassembly, repair, reassembly, and adjustment for all major systems. Overhaul: Detailed procedures for complete engine, transmission, and drivetrain component overhauls. Adjustments: Adjustment procedures for clutch, brakes, steering, and hydraulic controls. Technical Depth Depth Level: Comprehensive Factory Level Detail Level: Step-by-step instructions, hundreds of photos and illustrations, enlarged insets for detailed parts examination, notes, cautions, and warnings. 📊 Manual Specifications File Format Format: PDF Compatibility: All PC-based Windows operating systems and Mac. Print Quality Printability: Printable without any restriction. Print Options: Print in its entirety or select specific pages. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Delivery Method Delivery: Instant download link on checkout page after payment. Requirements Software Requirement: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Likely naturally aspirated diesel (specific engine code not provided in product info, but typical for Fiat 680 series). Engine Family: Fiat's 800 series tractors were typically powered by Fiat's own diesel engines. Performance Horsepower Range: The 680 series typically offered around 70-75 HP, with variations possible. Torque Characteristics: Designed for robust torque delivery for agricultural applications. Fuel System Fuel Type: Diesel Injection System: Likely mechanical direct injection. 🔧 Transmission Standard Transmission Type: Likely a 12-speed (8 forward + 4 reverse) or similar mechanical gearbox, potentially with a high/low range. Optional Optional Features: The 'DT' designation indicates it is a 'Dual Traction' (4WD) model, which is a significant drivetrain feature, not an optional transmission in the traditional sense. Features Gear Selection: Manual shift lever, likely with a separate lever for range selection. 📐 Dimensions Exterior Model Variant Impact: Dimensions can vary slightly between 2WD and 4WD (DT) variants, and depending on tire sizes fitted. Weights Operating Weight: Typically in the range of 3000-3500 kg, depending on configuration. 🛡️ Safety Features Ratings Safety Standards: Designed to meet agricultural machinery safety standards of its era. Active Features Braking System: Hydraulic disc brakes (likely wet disc brakes in the rear axle for improved performance and longevity), mechanical park brake. Passive Features Operator Protection: Basic ROPS (Roll Over Protection Structure) might be an aftermarket addition or standard depending on market and year; standard safety guards for PTO and other moving parts. 💡 Technology Features Infotainment Infotainment System: N/A (Basic agricultural tractor, no modern infotainment features). Driver Assistance Driver Assistance Systems: N/A (Basic tractor controls, no electronic driver assistance). Connectivity Connectivity Features: N/A (No electronic connectivity features). 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250-500 operating hours, or annually. Fuel Filter Replacement: As needed or at major service intervals, often tied to oil changes or based on fuel quality. Air Filter Service: Regular inspection and cleaning (especially in dusty conditions), replacement as needed. Fluid Specifications Engine Oil Type: API CD or CE, SAE 15W-40 or 10W-30 depending on climate. Transmission Hydraulic Fluid: Often a universal tractor transmission fluid (UTTO) or an SAE 20W-30 tractor hydraulic oil compatible with wet brakes. Coolant: Ethylene glycol based antifreeze/coolant mixture (typically 50/50). Known...