The Fiat 680 / 680DT Tractor, produced from the mid-1970s to the early 1980s, represents a robust and versatile machine designed for various agricultural applications. Known for its likely 4-cylinder diesel engine, manual synchronized gearbox, and hydraulic systems, this tractor offered reliable performance and durability, hallmarks of Fiat Trattori's extensive history in agricultural machinery. Its engineering quality ensured it could handle demanding tasks, making it a valuable asset for farmers and operators during its production era. This comprehensive factory service repair manual provides full coverage of the Fiat 680 and 680DT tractors. It details complete engine overhaul, transmission and hydraulic system repairs, as well as maintenance procedures for the fuel, lubrication, and cooling systems. The manual includes step-by-step diagnostic and repair instructions, routine maintenance schedules, fluid specifications, and detailed electrical wiring diagrams, all presented with factory-trained technician-level detail and clear illustrations to assist owners and technicians in maintaining and repairing their vehicles effectively. 🏷️ Basic Information Identification Make: Fiat Model: 680 / 680DT Tractor Generation Production Era: Mid-1970s to Early 1980s (Estimated) Codes Model Code: 680 / 680DT 👋 Introduction Market Position Target User: Fiat 680/680DT tractor owners, operators, and service technicians Value Proposition: Enables DIY servicing and maintenance, saving significant labor costs compared to professional shops. Competitive Analysis Manual Authenticity: Official Full Factory Service Repair Manual (not third-party) Key Features Search Functionality: Searchable PDF for quick information retrieval Instructional Guidance: Step-by-step instructions, notes, cautions, and warnings Visual Aid Quality: Detailed illustrations, drawings, photos, and enlarged insets for clarity Usability: Easy to use, no advanced computer skills required for printing and viewing 📋 Manual Details Coverage Areas Primary Coverage: Full Factory Service & Repair Procedures Model Variants Covered: All styles of the Fiat 680 and 680DT tractors Page Count Estimated Pages: Hundreds (Printable) Manual Type Type: Factory Service Repair Manual Language Language: English Format Delivery Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnostics, and repair Lubrication System: Lubrication system maintenance, component testing, and repair Cooling System: Cooling system maintenance, radiator, water pump, and thermostat service Fuel System: Fuel injection system, fuel pump, injectors, and filters service Disassembly Servicing: Component disassembly, cleaning, inspection, and reassembly General Information: General operating principles, specifications, and safety precautions Separation: Tractor separation and reassembly procedures Clutch: Clutch system inspection, adjustment, and replacement Transmission: Transmission overhaul, gear selection, and repair Drive Chain Sprockets: Drive chain and sprocket maintenance and replacement Rear Axle: Rear axle assembly, differential, and final drive service Brakes: Brake system diagnostics, repair, and fluid service Front Axle: Front axle assembly, steering components, and bearing service Steering: Steering system overhaul, linkage adjustment, and hydraulic steering service Shocks: Suspension and shock absorber service Body Work: Body panel repair, fender maintenance, and cab servicing Intake Exhaust: Intake and exhaust system inspection and repair Hydraulic System: Hydraulic system operation, pump, cylinder, and valve service Electrical System: Complete electrical system troubleshooting, wiring diagrams, starter, alternator, and battery service Routine Maintenance: Scheduled maintenance, lubrication, filter changes, and fluid checks Advanced Troubleshooting: In-depth diagnostic procedures and common problem resolution Wiring Diagrams: Detailed electrical wiring schematics Procedures Included Diagnostic Procedures: Step-by-step diagnostic guides for all major systems Repair Procedures: Detailed repair instructions for all components and systems Maintenance Procedures: Routine and preventative maintenance tasks Rebuild Procedures: Complete engine, transmission, and hydraulic system rebuilds Technical Depth Depth: Comprehensive: From basic maintenance to complete overhaul and advanced troubleshooting Detail Level: Factory-trained technician level of detail Illustrations Diagrams: Includes all necessary illustrations, drawings, and photos 📊 Manual Specifications File Format Format: PDF Compatibility: Works on all PC-based Windows operating systems and Mac Print Quality Printability: Fully printable without restriction (individual pages or entire manual) Resolution: High resolution Binding Type Binding: Digital (Downloadable PDF), Printable Paper Type Paper Type If Printed: User's choice of paper type ⚙️ Engine Specifications Primary Engine Engine Type: Diesel Engine (Likely Fiat-built) Engine Configuration: Likely 4-cylinder, naturally aspirated or turbocharged (specific details vary by sub-model and market) Performance Estimated Horsepower: Approximately 60-70 HP (Exact figures depend on specific engine variant) Estimated Torque: Not specified, but characteristic of its horsepower range Fuel System Fuel Type: Diesel Injection System: Direct Injection (Typical for Fiat tractors of this era) 🔧 Transmission Standard Transmission Type: Manual Synchronized Gearbox (Likely Fiat's own design) Optional Optional Transmission: Possible creeper gears or other PTO variations, but the core transmission is manual. Features Gear Selection: Multiple forward and reverse gears 📐 Dimensions Exterior Wheelbase: Not specified in product info, typical for tractors of this class. Weights Operating Weight: Estimated 2,500 - 3,000 kg (excluding ballast) 🛡️ Safety Features Ratings Safety Standards: Complies with relevant agricultural machinery safety standards of its era. Active Features Braking System: Hydraulic disc brakes (typical for rear wheels), parking brake. Passive Features Roll Over Protection: ROPS (Roll-Over Protective Structure) may be factory-fitted or optional depending on configuration and market. 💡...