Fiat 780, 780 DT, 880, 880 DT Tractor Workshop Manual (1979)

Fiat 780, 780 DT, 880, and 880 DT Tractor Workshop Manual (1979)

Maximize the performance and lifespan of your classic Fiat equipment with this professional-grade Workshop Manual. This comprehensive technical guide is specifically engineered for the Fiat 780 and 880 series, including the High-Traction DT (Dual Traction) 4WD variants. Whether you are performing a complete engine overhaul or adjusting the precision hydraulics, this manual provides the factory-spec data required to get the job done right the first time.

The Fiat 780 and 880 tractors are legendary for their durability and the robust 4-cylinder and 5-cylinder diesel powerplants. This manual covers the 1979 production specifications, ensuring you have the exact torque settings, clearances, and wiring schematics for these specific Italian-engineered workhorses.

Comprehensive Model Coverage

• Fiat 780 (2WD)
• Fiat 780 DT (4WD)
• Fiat 880 (2WD)
• Fiat 880 DT (4WD)

Technical Specifications & Serial Numbers

This manual is applicable for tractors starting from the following serial numbers and identification codes:

• Chassis Type 780: 460.000 and up
• Chassis Type 780 DT: 470.000 and up
• Chassis Type 880: 500.000 and up
• Chassis Type 880 DT: 510.000 and up
• Engine Types: 8045.04 (for 780 models) and 8055.04 (for 880 models)

Detailed Technical Content

Engine & Systems

Get under the hood with complete data for the Fiat 8000 series engines. Includes detailed sections on the cooling system, lubrication circuits, and fuel injection timing. The manual provides specific cylinder liner interference fits, valve timing angles, and piston ring clearances essential for professional rebuilding.

Power Train & Transmission

Detailed breakdown of the mechanical gearbox, including the high-low range units and the heavy-duty clutch assemblies. It covers the maintenance of the differential lock and the final drives, ensuring smooth power delivery to the ground.

Live Front Axle (DT Models)

Specific coverage for the "DT" Dual Traction models. Includes the overhaul of the front drive axle, steering knuckles, and the transfer box—vital information for maintaining the 4WD capabilities of your tractor.

Hydraulics & Lift Unit

Step-by-step instructions for the Fiat hydraulic lift system. Includes pressure testing values, pump flow rates, and internal valve adjustments to ensure your 3-point hitch and external remotes operate at full capacity.

Electrical System & Wiring

Full schematics for the 12V electrical system, including starter motor benchmarks, alternator output tests, and the complete fuse box layout for troubleshooting lighting or starting issues.

Why This Manual Is Essential

• Mobile-Friendly Layout: Optimized structure for quick reference on a tablet or smartphone while in the workshop or field.
• Factory Accuracy: No generic advice—only official Fiat Trattori specifications from the 1979 issue.
• Save on Repairs: Reduce downtime by diagnosing faults yourself using the "Quick Reference Index" and specialized troubleshooting sections.
• Professional Insight: Includes a dedicated section on essential service tools required for specialized tractor maintenance.

Ensure your Fiat 780 or 880 stays in peak operating condition with the most accurate technical documentation available.