Category:
Agricultural Tractors
Target User:
Farm operators, mechanics, agricultural equipment repair shops.
Completeness:
Offers comprehensive factory-level repair and maintenance data.
Documentation Source:
Official factory documentation, ensuring accuracy and detail.
Usability:
Downloadable PDF format allows for flexible printing and digital access.
Primary Coverage:
Complete service and repair for Fiat 55-66 DTV Tractor
Estimated Pages:
Hundreds (exact count not specified, but described as 'complete')
Type:
Factory Service Repair Manual
Language:
Likely English (standard for most service manuals, but not explicitly stated)
Engine:
Detailed repair, overhaul, tuning, and diagnostics for Fiat diesel engines.
Transmission:
Service, repair, and troubleshooting for the gearbox, clutch, and driveline.
Hydraulics:
Comprehensive coverage of the hydraulic system, including pumps, cylinders, valves, and PTO.
Electrical:
Wiring diagrams, component testing, troubleshooting, and repair of the electrical system.
Braking System:
Service procedures for mechanical and hydraulic braking components.
Steering System:
Diagnosis and repair of the mechanical and/or power steering system.
Front Axle Rear Axle:
Service and repair procedures for the front and rear axles, including differentials and final drives.
Cooling System:
Maintenance and repair of the radiator, water pump, thermostat, and fan.
Fuel System:
Service for fuel injection pumps, injectors, filters, and fuel tanks.
Exhaust System:
Repair and maintenance of the exhaust manifold, pipes, and muffler.
Body Chassis:
Information on chassis components, operator station, and basic bodywork.
Scheduled Maintenance:
Detailed maintenance schedules and procedures for routine servicing.
Troubleshooting:
Diagnostic charts and step-by-step troubleshooting guides for common and uncommon issues.
Repair:
Step-by-step repair instructions for virtually all components and systems.
Overhaul Rebuild:
Complete procedures for engine, transmission, and hydraulic component overhauls.
Adjustment:
Precise adjustment procedures for engine timing, valve clearance, and hydraulic systems.
Disassembly Assembly:
Detailed instructions for the safe and correct disassembly and reassembly of all major components.
Torque Specifications:
Critical torque values for all fasteners to ensure proper assembly and safety.
Depth:
Factory-level detail for professional technicians and experienced DIY users.
Diagnostic Information:
In-depth diagnostic procedures, symptom-based troubleshooting, and fault code explanations (if applicable).
Special Tools:
Identification and usage instructions for specialized tools required for specific repairs.
Engine Family:
Fiat 8000 Series Diesel
Engine Type:
Naturally Aspirated or Turbocharged Diesel
Displacement:
Likely around 3.0 - 3.5 Liters (specific to 55-66 model variants, typically inline 4-cylinder)
Bore X Stroke:
Specific values would be detailed in the manual (e.g., ~92mm x 100mm for common Fiat engines of this era).
Horsepower Range:
Approximately 55-60 HP (as indicated by model number 55-66).
Torque:
Specific torque figures provided in the manual, essential for engine load calculations and adjustments.
Injection System:
Direct Injection (DI) typically via Lucas, Bosch, or other reputable injection pump manufacturers.
Cooling Method:
Liquid Cooled (Water/Antifreeze)
Oil Type:
Specific SAE viscosity grade and API service classification for diesel engines will be listed (e.g., SAE 15W-40 API CD/CE or higher).
Oil Capacity:
Engine oil capacity with filter change would be detailed (typically 6-8 liters).
Gearbox Type:
Manual Synchromesh Gearbox
Gear Configuration:
Likely 8 forward and 4 reverse gears, or similar configuration common in this series.
Power Take Off Pto:
Standard PTO (540/1000 RPM) and possibly ground-speed PTO, with repair details.
Clutch Type:
Dual-stage dry clutch for transmission and PTO engagement.
Transmission Fluid:
Specific fluid type (e.g., Universal Tractor Transmission Oil - UTTO) and capacity will be listed.
Overall Length:
Variable depending on configuration, but typical for a 55hp tractor.
Overall Width:
Variable, adjustable rear track width.
Wheelbase:
Specific wheelbase dimension would be detailed in the manual.
Operating Weight:
Typically around 2000-2500 kg, but specific to configuration.
Front Tire Size:
Common sizes like 7.50-16 or 8.3-20.
Rear Tire Size:
Common sizes like 12.4-28 or 13.6-28.
Rollover Protection:
ROPS (Roll-Over Protective Structure) might be an option or standard, manual would detail fitment and inspection.
Braking System Type:
Drum or disc brakes, hydraulic actuation. Manual covers adjustment and servicing.
Operator Station:
Ergonomic considerations and safety features of the operator's platform detailed in the manual.
Engine Oil Filter Change:
Typically every 250-500 hours or annually, specific interval in manual.
Air Filter Cleaning Replacement:
Check and clean every 50-100 operating hours, replace as needed.
Fuel Filter Replacement:
Typically every 500 hours or annually.
Engine Oil Spec:
As per engine_specs.lubrication.oil_type attribute, with specific API rating from manual.
Hydraulic Transmission Fluid Spec:
UTTO (Universal Tractor Transmission Oil) or specific Fiat-approved fluid as per manual. SAE 80W/90 gear oil might be specified for some components.
Coolant Type:
Ethylene glycol-based coolant, mixed with distilled water at a 50/50 ratio for freezing and corrosion protection. Specific concentration guidance in manual.
Common Wear Items:
Clutch wear, hydraulic pump seals, injector pump timing drift, exhaust manifold gaskets, water pump leaks.
Electrical Gremlins:
Corroded connections, worn wiring insulation, particularly in older units. Manual aids diagnosis.
Hydraulic Performance:
Loss of lift capacity or slow hydraulics can indicate worn pump, worn cylinder seals, or valve block issues, all detailed in the manual.
Manufacturer:
Fiat Tractors (later became part of CNH Industrial).
Series:
Part of the Fiat 66 Series, which was a very successful line of utility tractors in the 1980s and 1990s.
Positioning:
Designed as versatile utility tractors for general farming operations.
Production Period:
The 66 series was produced from the mid-1980s through the 1990s.
