Market Position:
The Fiat 55-66 DTV was a versatile utility tractor popular in agricultural and industrial sectors, known for its robust construction and reliability.
Competitors:
Competed with models from manufacturers like Massey Ferguson, John Deere, and Landini in its class.
Key Features:
DTV designation likely refers to an advanced transmission or drive system, emphasizing enhanced operator control and efficiency. Known for its powerful engine and efficient hydraulics for its era.
Engine Service:
Detailed diagnostics, repair, and overhaul procedures for Fiat diesel engines
Transmission Service:
Repair and adjustment of mechanical and power shift transmissions
Hydraulic System:
Service and repair of the tractor's hydraulic pump, valves, and cylinders
Electrical System:
Wiring diagrams, component testing, and troubleshooting for the 12V electrical system
Cooling System:
Radiator, thermostat, water pump, and fan maintenance
Fuel System:
Fuel injection pump, injectors, and fuel filter service
Braking System:
Service and adjustment of mechanical and hydraulic braking components
Steering System:
Repair and maintenance of mechanical and power steering components
Power Take Off Pto:
Service and repair of the PTO clutch and drive mechanism
Front Axle And Steering:
Maintenance and repair of the front axle and steering linkage
Rear Axle And Differential:
Service and overhaul of the rear axle and differential assembly
Chassis And Frame:
Inspection and repair of chassis components and structural integrity
Operator Station:
Maintenance of controls, seat, and safety features in the operator's area
Routine Maintenance:
Oil changes, filter replacements, lubrication schedules, and general inspections
Troubleshooting Guides:
Diagnostic procedures for common and uncommon operational issues
Disassembly And Assembly:
Step-by-step instructions for dismantling and reassembling major components
Overhaul Procedures:
Detailed instructions for complete engine and transmission overhauls
Adjustment Procedures:
Settings for clutch, brakes, linkage, and engine components
Calibration:
Procedures for calibrating hydraulic systems and engine controls
Troubleshooting Charts:
Systematic approach to identifying and resolving faults
Diagnostic Capability:
Advanced diagnostic routines and fault code interpretation
Rebuild Specification:
In-depth specifications for complete component rebuilds, including tolerances and clearances
Service Tools:
Identification of specialized tools required for specific repair operations
Print Quality:
High-resolution, printable pages
Binding Type:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Searchability:
Text-searchable PDF for quick information retrieval
Diagrams And Illustrations
Diagrams And Illustrations:
Includes detailed diagrams, schematics, and exploded views
Engine Model:
Likely a Fiat 8045 or similar series diesel engine
Engine Type:
Naturally Aspirated, 4-cylinder Diesel
Engine Displacement:
Approximately 3.5 - 4.0 Liters (specific to engine variant)
Rated Horsepower:
Around 55 PTO horsepower (model designation suggests this)
Fuel Injection Type:
Direct Injection with Bosch or similar rotary injection pump
Engine Oil Change:
Typically every 250 hours of operation or annually, whichever comes first.
Fuel Filter Replacement:
Recommended every 500 hours or as per diagnostics.
Air Filter Cleaning Replacement:
Check every 100 hours, clean or replace as needed based on operating environment.
Transmission Fluid Change:
Typically every 1000-1200 hours.
Engine Oil Specification:
API CE or CF-grade diesel engine oil, SAE 15W-40 recommended for most climates. Consult manual for specific viscosity grades.
Hydraulic Fluid Specification:
UTTO (Universal Tractor Transmission Oil) or equivalent, meeting Fiat's specifications (e.g., Fiat AFNOR 48004 N or ISO VG 46).
Transmission Oil Specification:
UTTO or equivalent, shared with hydraulic system.
Coolant Specification:
Ethylene glycol-based antifreeze with corrosion inhibitors, typically a 50/50 mix with distilled water.
Common Issues:
Wear on clutch components, hydraulic system leaks (especially seals), and potential for starter motor issues are common with aging tractors.
Preventative Maintenance:
Regular lubrication, timely fluid changes, and checking for leaks are crucial for longevity.
Brand Heritage:
Fiat's long history in agricultural machinery production, tracing back to the early 20th century, signifies deep expertise in tractor design and manufacturing.
Model Line:
The 66 series represented a significant evolution in Fiat's tractor line, introducing improved comfort, transmission options, and engine performance compared to earlier models. It was part of a successful and widespread series.
Production Period:
The 66 series tractors, including the 55-66 DTV, were primarily produced in the 1980s and early 1990s.
Manufacturing Location:
Likely manufactured in Italy, potentially at Fiat's primary tractor plants.
Industry Recognition:
The Fiat 66 series was widely regarded for its durability and performance in its class, making it a popular choice for farmers and contractors.
Reliability Rating:
Generally considered reliable with proper maintenance, a hallmark of Fiat agricultural equipment.
Emission Standards:
Meets the emission standards applicable to its production era.
