🏷️ Basic Information

Make:

Fiat

Model:

680 / 680DT

Type:

Tractor

👋 Introduction

Market Position:

The definitive resource for owners and technicians seeking to maintain and repair Fiat 680 and 680DT tractors. Positions itself as an indispensable tool for cost-effective and accurate service.

Competitive Analysis:

This official parts catalog and service manual is the primary source of information, offering a level of detail and accuracy often exceeding generic repair guides or unofficial forums. It provides the specific part numbers and procedures crucial for authentic service.

Key Features:

Comprehensive coverage, detailed illustrations and diagrams, advanced troubleshooting guide, instant digital delivery, factory-approved information, search functionality within PDF.

📋 Manual Details

Coverage Areas:

Engine, Lubrication System, Cooling System, Fuel System, Clutch, Transmission, Drive Chain & Sprockets, Rear Axle, Brakes, Front Axle, Steering, Shocks, Body Work, Intake & Exhaust, Hydraulic System, Electrical System, Routine Maintenance, Advanced Troubleshooting, Wiring Diagram

Page Count:

Hundreds of detailed pages

Manual Type:

Service Parts Catalog / Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Lubrication, Cooling, Fuel Delivery & Injection, Clutch Assembly, Transmission Drivetrain, Rear Axle and Differential, Braking System, Front Axle and Steering, Shock Absorbers (if applicable), Body and Chassis, Intake and Exhaust, Hydraulic Power Lift and Auxiliary Circuits, Electrical System (including wiring diagrams)

Procedures Included:

Disassembly and Reassembly, Servicing, Routine Maintenance, Advanced Troubleshooting, Diagnostic Procedures, Repair Procedures, Component Overhaul, Lubrication Points and Specifications, Torque Specifications, Wiring Harness Tracing, Injector Adjustment and Settings

Technical Depth:

Comprehensive, covering detailed repair procedures, component identification, and troubleshooting for both DIY enthusiasts and professional mechanics. Includes factory-level detail for accurate repairs and maintenance.

📊 Manual Specifications

File Format:

PDF

Compatibility:

Windows, Android, iOS, Linux

Requirements:

Adobe PDF Reader

Delivery:

Instant Download

Print Quality:

High-resolution, suitable for printing specific pages or the entire manual.

Binding Type:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine:

Fiat 4-cylinder Diesel (Specific model details would typically be found within the manual, e.g., 8045.01 or similar series engines common in this range).

Performance:

Engine horsepower and torque figures specific to the 680 and 680DT models, essential for understanding operational capabilities and load requirements. The manual would contain these specifications.

Fuel System:

Diesel injection system, including fuel pump, injectors, filters, and associated piping. The manual details settings, troubleshooting, and component replacement for optimal fuel delivery and combustion.

Lubrication System:

Details on oil pump, oil filter, lubrication passages, and oil capacities. Specifies recommended oil types and change intervals for effective engine lubrication and cooling.

Cooling System:

Covers radiator, water pump, thermostat, fan, and coolant passages. Includes coolant type specifications and maintenance procedures to prevent overheating.

Engine Type:

Naturally Aspirated Diesel (typical for this model range). Turbocharged variants ('DT' might sometimes imply turbo, though more commonly 4WD) would have specific turbocharger coverage.

Bore Stroke:

Specific bore and stroke dimensions for the engine series used in the 680/680DT are detailed in the manual, crucial for engine rebuilds and precision measurements.

Compression Ratio:

The manual provides the factory-specified compression ratio, a key indicator of engine health and performance.

Injector Timing:

Precise specifications for injector pump timing and injector opening pressure, critical for fuel efficiency and power output. The manual guides adjustments using specialized tools.

🔧 Transmission

Standard:

Likely a multi-speed manual gearbox with a range of forward and reverse gears. The manual provides detailed diagrams and overhaul procedures.

Optional:

The 'DT' designation often implies a 'Dual Traction' or 4-wheel drive variant, which would have additional drivetrain components covered in the manual. Other transmission options (e.g., specific PTO speeds) may also be detailed.

Features:

Information on clutch operation, gear shifting mechanisms, differential locks (if equipped), and PTO engagement systems.

Gear Ratios:

Detailed gear ratios for all forward and reverse gears, essential for understanding torque multiplication and speed selection for different tasks.

Pto Specifications:

Information on PTO speeds (e.g., 540 RPM, 1000 RPM), engagement mechanisms, and maintenance, vital for operating implements.

Differential Lock:

Details on the operation, maintenance, and troubleshooting of the differential lock system, especially pertinent for 4WD ('DT') models.

📐 Dimensions

Exterior:

Overall dimensions (length, width, height) and wheelbase relevant for transport, storage, and maneuverability. Specific measurements will be found within the manual's technical specifications.

Weights:

Unladen weight, Gross Vehicle Weight (GVW), and axle weight distribution. Crucial for safe operation and trailer compatibility. Capacity details will be in the manual.

Wheelbase:

The distance between the front and rear axles, impacting stability and turning radius. Specific measurement provided in manual.

Track Width Front:

Adjustable or fixed front wheel track width, important for row crop cultivation. Manual will specify ranges and adjustment procedures.

Track Width Rear:

Adjustable or fixed rear wheel track width, critical for matching implements and field conditions. Manual will specify ranges and adjustment procedures.

🛡️ Safety Features

Ratings:

While specific crash ratings are not typical for tractors, the manual covers safety-related operational procedures, brake system effectiveness, and stability considerations.

Active Features:

Information on brake system operation, steering system integrity, and potentially differential locks or other traction aids.

Passive Features:

Details on ROPS (Roll-Over Protective Structure) requirements and maintenance, seatbelt systems, and operator presence controls, if applicable to the model's era and design.

Brake System Type:

Typically drum or disc brakes, often with a wet brake system for the rear axle. The manual details their maintenance, adjustment, and hydraulic components.

Parking Brake:

Mechanism and operation of the parking brake system, ensuring safe stationary operation. Maintenance and adjustment procedures are covered.

💡 Technology Features

Infotainment:

Tractor technology of this era would focus on operational controls rather than infotainment. The manual covers the functionality of the dashboard indicators, controls, and gauges.

Driver Assistance:

Features would include power steering (if equipped), PTO engagement controls, and potentially hitch controls. The manual details the operation and maintenance of these systems.

Connectivity:

Not applicable in the modern sense. The manual covers the tractor's mechanical and electrical systems essential for operation.

Wiring Diagram:

Complete and detailed electrical wiring diagrams for all systems, including lighting, starting, charging, and instrument panel. Essential for diagnosing electrical faults.

Instrumentation:

Description and function of all dashboard gauges and warning lights (e.g., oil pressure, coolant temperature, battery charge, fuel level).

🔧 Maintenance

Service Intervals:

Detailed schedule for routine maintenance, including engine oil changes, filter replacements (oil, fuel, air), coolant checks, transmission fluid changes, hydraulic fluid checks, and lubrication points. These are critical for longevity.

Fluid Specifications:

Exact types and viscosity grades for engine oil, transmission oil, hydraulic fluid, brake fluid (if applicable), and coolant. Crucial for proper system function and component protection. The manual lists all capacities.

Known Issues:

While the manual is comprehensive, its value lies in diagnosing and rectifying common issues such as fuel system problems (injector wear, pump issues), clutch wear, hydraulic leaks, and potential electrical gremlins, all of which are addressed with diagnostic trees and repair procedures.

Troubleshooting Guide:

An advanced guide featuring systematic approaches to diagnose problems based on symptoms, covering everything from engine performance issues to hydraulic malfunctions and electrical faults. Includes diagnostic codes and their meanings.

Parts Catalog:

Extensive listing of all replaceable parts with part numbers, diagrams, and quantities required for each assembly. Essential for ordering the correct components for repairs and maintenance.

Engine Oil Capacity:

Specific oil capacity for the engine, critical for proper lubrication. Manual will list the exact volume (e.g., liters or gallons).

Transmission Oil Capacity:

Oil capacity for the transmission and final drives, ensuring adequate lubrication of drivetrain components. Manual provides precise figures.

Hydraulic System Capacity:

Capacity of the hydraulic fluid reservoir for operating the hitch, auxiliary functions, and steering. Manual specifies the volume and recommended fluid type.

Filter Part Numbers:

Listing of all required filters (oil, fuel, air, hydraulic) with their corresponding Fiat part numbers for easy sourcing.

Bolt Torque Specs:

Crucial torque specifications for all critical fasteners throughout the tractor, from engine components to axle and transmission bolts, ensuring correct assembly and preventing damage.

Grease Points:

Identification and recommended service intervals for all lubrication points requiring grease, ensuring longevity of bearings and pivot points.

📚 Vehicle History

Brand Heritage:

Fiat tractors have a long and significant history in agricultural machinery, known for their robust construction and reliability. This manual supports the legacy of Fiat's engineering.

Model Evolution:

The 680 series represented a significant step in Fiat's tractor development, likely evolving from earlier models with improvements in power, comfort, and efficiency. The manual details the specific configurations of the 680 and 680DT.

Production:

Production years for the Fiat 680/680DT would place it in a specific era of agricultural mechanization. The manual is specific to these production runs.

Target Market:

Designed for agricultural applications ranging from small to medium-sized farms, providing versatility for various fieldwork tasks.

🏆 Awards & Recognition

Recognitions:

While specific awards for individual tractor models from this era are not widely publicized, Fiat's overall reputation for agricultural machinery is a testament to its engineering quality.