Positioning:
The Fiat 55-66 V tractor was a robust and versatile machine designed for a range of agricultural tasks, popular in its era for reliability and straightforward design.
Competitors:
Competed with tractors from manufacturers like Massey Ferguson, John Deere, Ford, and International Harvester in the utility tractor segment of its production period.
Features:
Known for its durable construction, powerful engine for its class, and reliable hydraulic system. The 'V' designation often implies specific configurations or markets.
Value Proposition:
This comprehensive 898-page workshop manual is an essential resource for owners and mechanics seeking to maintain, diagnose, and repair the Fiat 55-66 V tractor, ensuring its longevity and optimal performance.
Systems Covered:
Engine, Transmission, Hydraulics, Electrical System, Steering, Brakes, Front Axle, Rear Axle, PTO, Cooling System, Fuel System, Lubrication System, Chassis, Bodywork, Troubleshooting
Type:
Workshop Service Manual / Repair Manual
Engine Overhaul:
Complete disassembly, inspection, repair, and reassembly of engine components, including cylinder head, pistons, crankshaft, camshaft, and timing gears.
Transmission Repair:
Detailed procedures for servicing and repairing the gearbox, clutch, differential, and final drives.
Hydraulic System:
Diagnosis and repair of the hydraulic pump, control valves, cylinders, and remote couplings. Includes schematics and troubleshooting.
Electrical System:
Wiring diagrams, component testing, troubleshooting of starting and charging systems, lighting, and instrumentation.
Steering System:
Repair and adjustment of the steering box, linkages, and power steering components.
Brake System:
Service and repair of braking mechanisms, including adjustment and component replacement.
Front Rear Axles:
Maintenance and repair of front and rear axle assemblies, including planetary gears and hubs.
Pto System:
Service and troubleshooting of the Power Take-Off (PTO) system, including engagement and output shaft.
Cooling System:
Maintenance and repair of the radiator, thermostat, water pump, and hoses.
Fuel System:
Service and calibration of the fuel injection pump and injectors, fuel filters, and tank.
Lubrication System:
Details on lubrication points, oil types, and oil change procedures.
Chassis Bodywork:
Information on chassis components, frame, fenders, and operator station.
Scheduled Maintenance:
Detailed maintenance schedules for regular servicing, including fluid changes, filter replacements, and lubrication.
Troubleshooting Diagnostics:
Systematic diagnostic procedures and common fault finding guides for various operational issues.
Repair Rebuild:
Step-by-step instructions for repairing or completely rebuilding major tractor components.
Component Adjustment:
Procedures for adjusting clutch, brakes, PTO engagement, and engine valve lash.
Tightening Torques:
Comprehensive list of torque specifications for critical fasteners throughout the tractor.
Engine Timing:
Detailed procedures for setting engine timing and valve clearances.
Injection Pump Timing:
Specific instructions for setting the timing of the fuel injection pump relative to the engine.
Hydraulic Pump Rebuild:
Step-by-step guide for the overhaul and repair of the main hydraulic pump.
Pto Clutch Adjustment:
Procedures for adjusting the engagement and disengagement of the PTO clutch.
Depth:
Comprehensive: Covers everything from routine maintenance to complete engine and transmission rebuilds. Suitable for professional mechanics and experienced DIY users.
Troubleshooting Charts:
Includes comprehensive troubleshooting charts for identifying and resolving common and uncommon issues across all systems.
Schematics:
Includes detailed electrical and hydraulic schematics crucial for diagnosis and repair.
Engine Model:
Fiat 8045 Series (Specific variant likely based on 55-66 V designation)
Engine Type:
Diesel, Naturally Aspirated (Typically)
Displacement:
Approximately 3.3 to 3.9 Liters (Specific to 55-66 V variant, common for this series)
Horsepower:
Around 55 PTO HP (Power Take-Off Horsepower), consistent with the '55' in the model name.
Torque Peak:
Detailed specifications for peak torque and RPM available within the manual.
Injection System:
Indirect injection with rotary or inline injection pump (e.g., Bosch or similar).
Coolant Type:
Ethylene Glycol based coolant (typically 50/50 mix with water). Specifics in manual.
Engine Oil Grade:
Typically SAE 15W-40 or 10W-30 for diesel engines (confirm specific grade in manual).
Oil Capacity:
Approx. 7-9 Liters (Check manual for precise capacity).
Transmission Type:
Manual Synchromesh Gearbox
Number Of Speeds:
Likely 8 or 12 forward speeds and 4 reverse speeds, often with a creeper gear option.
Transmission Options:
Some models may have featured a Dual Power or torque amplifier option for increased gear selection.
Clutch:
Dry, Dual-Stage Clutch (for PTO and transmission engagement).
Pto:
Standard 540 RPM PTO, potentially with a 1000 RPM option. Manual covers PTO operation and servicing.
Transmission Oil Type:
API GL-4 or GL-5, SAE 80W-90 or 85W-140 Gear Oil (confirm specific grade in manual).
Engine Oil Change:
Typically every 250 or 500 operating hours, or annually. Precise interval in manual.
Fuel Filter Replacement:
Recommended every 500 operating hours or as needed based on fuel quality. Manual provides specific frequency.
Air Filter Servicing:
Check daily, service as needed based on operating conditions. Manual details cleaning/replacement.
Hydraulic Fluid Type:
Universal Tractor Transmission Oil (UTTO) or specific Fiat hydraulic fluid. Manual specifies type and viscosity.
Hydraulic System Capacity:
Approximately 35-45 Liters (Check manual for exact capacity).
Common Wear Items:
Clutch wear, hydraulic pump seals, and front axle kingpins are common wear items addressed in the manual.
Electrical Gremlins:
Older wiring harnesses and connections can sometimes be a source of intermittent electrical issues, which the manual's troubleshooting section addresses.
Heritage:
Fiat Trattori, founded in 1919, has a long and storied history in agricultural machinery, evolving into CNH Industrial.
Series Evolution:
The 66 series tractors were a significant part of Fiat's product line, known for their updated styling and improved features over previous generations. The 55-66 V represents a specific configuration within this successful series.
Production Years:
The 66 series was primarily produced from the mid-1980s through the 1990s. The exact production span for the 55-66 V is detailed in the manual or historical records.
