The Fiat Trattori 680 and 680DT represent a robust line of utility tractors, produced in Italy during the late 1970s and 1980s. These Italian-engineered machines are known for their reliability and were a significant part of Fiat's successful agricultural lineup. Equipped with naturally aspirated, indirect injection diesel engines typically in the 60-70 HP range, they feature a manual synchromesh gearbox and are available in both 2WD (680) and 4WD (680DT) configurations. Their design prioritizes durability and straightforward operation, making them a trusted choice for agricultural tasks. This comprehensive repair service manual provides detailed information for the maintenance and repair of the Fiat Trattori 680 / 680DT. It covers essential systems including the engine, transmission, hydraulics, electrical components, chassis, cooling, fuel, and exhaust systems. The manual includes step-by-step repair procedures, critical technical specifications, diagnostic and troubleshooting guidance, and detailed diagrams. Its purpose is to assist professional agricultural technicians, farm mechanics, and experienced DIY enthusiasts in maintaining the optimal performance and longevity of their Fiat Trattori vehicles. 🏷️ Basic Information Identification Make: Fiat Trattori Model: 680 / 680DT Product Type: Repair Service Manual 👋 Introduction Market Position Target Audience: Professional agricultural technicians, farm mechanics, and experienced DIY enthusiasts Competitive Analysis Value Proposition: Provides factory-level repair and maintenance information, enabling cost-effective and accurate servicing Key Features Feature 1: Step-by-step repair procedures Feature 2: Critical specifications and torque values Feature 3: Diagnostic and troubleshooting guidance Feature 4: Wiring diagrams and schematics Ease Of Use Accessibility: Instant download allows immediate access for urgent repairs 📋 Manual Details Coverage Areas Primary Coverage: Repair and Maintenance Page Count Estimated Pages: Refer to individual download details, typically comprehensive for workshop manuals Manual Type Type: Workshop Manual / Service Manual / Repair Manual Language Language: English Format File Format: PDF Printability: Full Printable Zoom Capability: Yes Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinZip (or equivalent unzipping software) Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine: Detailed repair, overhaul, and maintenance procedures for Fiat diesel engines Transmission: Repair and maintenance of gearbox, clutch, and final drives Hydraulics: Power steering, hydraulic lift system (PTO, implement control) Electrical: Wiring diagrams, starter, alternator, lighting, instrumentation troubleshooting Chassis: Front axle, rear axle, braking system, steering system Cooling System: Radiator, thermostat, water pump servicing Fuel System: Fuel injection pump, injectors, filters, fuel tank maintenance Exhaust System: Muffler and pipe inspection and replacement Pto: Power Take-Off unit servicing and repair Procedures Included Maintenance: Regular servicing, lubrication, fluid changes, filter replacements Disassembly Assembly: Step-by-step instructions for component removal and reinstallation Repair: Detailed repair procedures for all major systems and components Troubleshooting: Diagnostic procedures and common fault finding for various issues Cleaning: Component cleaning procedures during disassembly Reinstallation: Correct reassembly and testing procedures Specifications: Critical technical data, torque values, clearances, and tolerances Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIY users Illustrations Visual Aids: Includes illustrations, diagrams, and pictures to aid in understanding 📊 Manual Specifications File Format Format: PDF Print Quality Resolution: High-resolution for clear viewing and printing Binding Type Binding: Digital (PDF format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Family: Fiat 8000 Series Diesel (specific engine designation varies based on exact tractor configuration) Engine Type: Naturally Aspirated, Indirect Injection Diesel Performance Horsepower Range: Typically in the 60-70 HP range (exact figure depends on specific engine variant) Torque Range: Refer to specific engine data within the manual Fuel System Injection System: Bosch or similar quality mechanical diesel injection pump Cooling System Cooling Type: Water-cooled Lubrication Oil Type Recommendation: API CD or ACEA E2 specification diesel engine oil (refer to manual for specific viscosity grade, e.g., SAE 15W-40) Fluid Capacities Engine Oil Capacity: Approximately 9-12 Liters (refer to manual for exact capacity) 🔧 Transmission Standard Transmission Type: Manual Synchromesh Gearbox Optional Drive Type: 2WD (680) and 4WD (680DT - Dual Traction) Features Gear Selection: Multiple speed ranges, often with auxiliary gearboxes Fluid Requirements Gearbox Oil Type: GL-4 Hypoid Gear Oil (SAE 80W-90 or 85W-90, refer to manual for exact specification) Fluid Capacities Gearbox Oil Capacity: Refer to specific sections in the manual 📐 Dimensions Exterior General Type: Utility Tractor Weights Operating Weight: Approximately 2800-3500 kg (depending on configuration) 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) availability or installation guidance Active Features Braking System: Hydraulically operated disc brakes (often inboard wet or dry discs) Passive Features Lighting: Headlights, taillights, turn signals, work lights (as per regulations/options) 💡 Technology Features Infotainment Infotainment System: Basic analog instrumentation (tachometer, temperature gauge, oil pressure warning light, battery warning light) Driver Assistance Driver Assistance Features: None (design predates modern driver-assistance systems) Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250-500 operating hours (refer to manual for exact recommendation) Air Filter Cleaning: As required, based on operating...