Tractor Segment:
Utility tractor, likely catering to small to medium-sized farms, agricultural contractors, and specialized land management applications.
Competitors:
Competed with similar-class tractors from manufacturers like Massey Ferguson, Ford, John Deere, and Case IH during its production era.
Lp Designation:
'LP' typically signifies 'Low Profile', indicating a design optimized for operation in lower clearance environments, such as orchards, vineyards, or under structures.
Durability Reliability:
Fiat tractors are generally known for their robust construction and reliability, making them a popular choice for demanding agricultural work.
Primary Coverage:
Comprehensive service, repair, and maintenance for the Fiat 55-66 LP Tractor.
Geographic Focus:
Global (used by mechanics worldwide).
Estimated Page Count:
Detailed page count not explicitly stated, but described as 'full service and repair instruction', implying a substantial volume.
Type:
Workshop Service and Repair Manual.
Primary Language:
English (implied by description targeting global mechanics).
Format:
Likely digital (PDF) for widespread distribution, but could also be physical print.
Engine:
Engine overhaul, tuning, fuel system, cooling system, lubrication system, starting and charging systems.
Transmission:
Gearbox, clutch, power take-off (PTO), differential, final drives, gearbox overhaul and repair.
Hydraulic System:
Hydraulic pump, cylinders, control valves, linkage, lift mechanism, hydraulic fluid specifications.
Steering System:
Steering box, linkages, power steering components (if equipped), troubleshooting.
Braking System:
Brake mechanisms, hydraulics, adjustments, and repair procedures.
Electrical System:
Wiring diagrams, lighting, starting system, charging system, starter motor, alternator, battery, troubleshooting.
Chassis And Running Gear:
Front axle, rear axle, suspension, wheels, tires, lubrication points.
Operator Station:
Controls, dashboard, seating, operator comfort systems.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, lubrication, adjustments.
Troubleshooting:
Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides.
Repair:
Step-by-step repair instructions for all major components and systems.
Overhaul:
Detailed procedures for engine, transmission, and hydraulic system overhauls.
Disassembly Assembly:
Complete instructions for component disassembly and reassembly with torque specifications.
Depth:
Comprehensive, suitable for professional mechanics and advanced DIY users. Covers everything from routine maintenance to complete engine rebuilds.
Detail Level:
Includes detailed diagrams, exploded views, torque specifications, and diagnostic charts.
Digital Format:
Likely PDF. High-resolution scans of original documentation or professionally digitized content.
Print Quality:
If printed, expect clear text and legible diagrams. If digital, high-resolution for easy viewing on screen or printout.
Binding Type:
N/A (for digital format). If physical, typically spiral-bound or perfect-bound for durability in workshop environments.
Paper Type:
N/A (for digital format). If physical, typically heavy-duty paper stock suitable for workshop conditions.
Engine Family:
Likely a Fiat-built diesel engine.
Engine Configuration:
Likely a naturally aspirated or turbocharged 3 or 4-cylinder diesel engine.
Engine Displacement:
Specific displacement for the 55-66 LP requires manual confirmation but typically falls in the 2.5L - 3.5L range for this class.
Bore X Stroke:
Specific bore and stroke dimensions would be detailed within the manual.
Rated Horsepower:
Around 55 horsepower (as indicated by the model number), exact PTO and engine HP would be specified.
Torque Curve:
The manual would detail the torque curve and peak torque output.
Injection System:
Likely mechanical indirect injection (IDI) or direct injection (DI) via a rotary or inline injection pump.
Fuel Filter Part Numbers:
Manual would list specific OEM or equivalent filter part numbers for fuel filters.
Oil Type:
Likely API CG-4 or similar diesel engine oil, viscosity grade (e.g., 15W-40) would be specified.
Oil Capacity:
Engine oil capacity would be listed, typically around 7-9 liters.
Coolant Type:
Typically a glycol-based antifreeze/coolant mixture.
Coolant Capacity:
Cooling system capacity would be specified in the manual.
Transmission Type:
Manual transmission, likely with a synchronized or unsynchronized gearbox.
Gear Configuration:
Likely 8 or 12 forward gears and 4 or 8 reverse gears (e.g., 8F+4R or 12F+4R or with a creeper gear.
Clutch Type:
Single dry plate clutch.
Optional Features:
Optional creeper gear or shuttle shift may have been available depending on specific configurations.
Pto Speeds:
Standard PTO speeds (e.g., 540 RPM and/or 1000 RPM) would be detailed, along with engagement procedures.
Transmission Fluid Type:
Likely a universal tractor transmission oil (UTTO) or hydraulic fluid (e.g., SAE 80W-90 or equivalent).
Transmission Fluid Capacity:
Transmission fluid capacity would be listed, typically around 25-35 liters.
Wheelbase:
Specific wheelbase for the 55-66 LP would be in the manual. Typically around 2000-2100 mm.
Length:
Approximate length would be around 3600-3900 mm.
Width:
Width would vary based on tire size and configuration, likely around 1700-1900 mm.
Height:
Height to the top of the steering wheel or operator platform would be specified. Low profile design would mean reduced height compared to standard models.
Operating Weight:
Operating weight typically around 2200-2500 kg.
Lifting Capacity:
The manual would detail the hydraulic lift capacity at the hitch points (e.g., 1500-2000 kg).
Rollover Protection:
ROPS (Roll-Over Protective Structure) capability would be detailed. Many tractors of this era may have had optional ROPS or could be fitted with aftermarket solutions.
Brakes:
Mechanical or hydraulic brakes, disc or drum type, with detailed adjustment and maintenance procedures.
Operator Station Design:
Ergonomic considerations and safety aspects of the operator's position, controls, and guards.
Infotainment Features:
Basic operator controls, instrumentation (tachometer, temperature gauge, fuel gauge, warning lights). No modern infotainment systems expected.
Driver Assistance Features:
Limited to mechanical aids like differential lock (if equipped). No electronic driver assistance systems.
Connectivity Features:
No modern connectivity features (Bluetooth, Wi-Fi, GPS) are expected on this model.
Engine Oil Change:
Typically every 250-500 operating hours, or annually, as specified in the manual.
Fuel Filter Replacement:
Typically every 500-1000 operating hours or as recommended based on fuel quality.
Air Filter Service:
Regular inspection and cleaning (daily or weekly depending on dust conditions), replacement as needed.
Hydraulic Filter Replacement:
Typically every 1000-1500 operating hours, or annually.
Hydraulic Fluid Type:
Manual will specify recommended hydraulic fluid (e.g., Fiat spec, or generic UTTO/HTF spec).
Transmission Fluid Type:
Manual will specify recommended transmission fluid (e.g., SAE 80W-90 GL-4 or UTTO).
Common Wear Points:
Potential wear in clutch, PTO components, hydraulic seals, and linkage bushings. Manual will guide on inspection and replacement.
Electrical Reliability:
Older electrical systems may require attention to wiring integrity, connections, and component condition.
Fiat Agriculture:
Fiat is a historic Italian manufacturer with a long-standing reputation for producing robust and reliable agricultural machinery.
66 Series:
The 66 Series was a successful line of tractors for Fiat, known for their versatility and durability. The LP variant offered a specialized low-profile design.
Production Period:
The 66 Series was produced primarily from the early 1980s through the 1990s.
