Target Audience:
Professional agricultural technicians, farm mechanics, and experienced DIY tractor owners
Manual Equivalence:
Equivalent to factory service manuals, often includes information not readily available in owner's manuals
Benefit For Owner:
Empowers owners to perform informed maintenance and repairs, reducing reliance on external service providers
Manual Scope:
Comprehensive repair, maintenance, and service
Estimated Page Count:
Refer to product listing for exact count (typically 500+ pages for this model)
Type:
Repair Service Manual / Workshop Manual
Primary Purpose:
Repair and Service Manual
Engine:
Detailed diagnostics, overhaul, fuel system, cooling system, lubrication system, starting and charging system
Transmission:
Manual transmission, powershift (if applicable), differential lock, PTO (Power Take-Off) systems
Hydraulics:
Hydraulic pump, valves, cylinders, control systems, PTO operation
Electrical System:
Wiring diagrams, lighting, starter, alternator, battery, instrument panel, safety systems
Chassis:
Front axle, rear axle, steering system, braking system, hitch system
Bodywork:
Sheet metal repairs, operator station, cab (if applicable)
Steering System:
Hydrostatic power steering system, steering linkages, front wheel alignment.
Maintenance:
Regular servicing, lubrication points, filter replacement, fluid checks
Troubleshooting:
Diagnostic charts, fault finding procedures for common issues
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly
Installation:
Installation procedures for aftermarket or replacement parts
Engine Overhaul:
Complete engine disassembly, component inspection, repair specifications, and reassembly.
Torque Specifications:
Detailed torque values for critical fasteners across all systems.
Precision Measurements:
Clearance and wear measurements for engine, transmission, and hydraulic components.
Filter Part Numbers:
Includes cross-references or OEM part numbers for key filters (oil, fuel, air, hydraulic).
Depth:
Full factory-level detail, suitable for professional technicians and advanced DIY mechanics
Print Quality:
Full Printable (high resolution, clear text and diagrams)
Searchability:
Searchable PDF content
Zoom Capability:
YES (Zoom IN/OUT supported)
Digital Binding:
N/A (Digital Download)
Digital Paper Type:
N/A (Digital Download)
Software Requirements:
Adobe PDF Reader, WinZip (or similar unzipping utility)
Operating System Compatibility:
All Versions of Windows & Mac
Delivery Method:
Instant Download
Engine Manufacturer:
Fiat (or Fiat-licensed)
Engine Model Series:
Likely from the Fiat 8000 or a similar series engine family
Engine Configuration:
Inline Diesel (likely 3 or 4 cylinder for the 55 HP class)
Engine Displacement:
Estimated 2.5L - 3.5L (specific to the exact 55-90 configuration)
Rated Horsepower:
55 HP (PTO horsepower will vary slightly)
Injection System:
Mechanical Fuel Injection (likely rotary or inline pump)
Cooling Type:
Water-cooled
Oil Pump Type:
Gear-type oil pump
Transmission Type:
Manual Synchromesh (likely 8 or 12 forward speeds, with reverse)
Powershift Option:
Possible (check specific model configurations, often denoted by '-S' or similar)
Pto:
Standard 540/1000 RPM PTO, potentially ground-speed PTO
Differential Lock:
Standard
Clutch Type:
Single or Dual-plate dry clutch (depending on PTO configuration)
Wheelbase:
Refer to manual for exact dimensions (typically around 2100-2300 mm)
Length:
Refer to manual for exact dimensions (typically around 3700-4000 mm excluding implement)
Width:
Refer to manual for exact dimensions (typically around 1800-2000 mm)
Height:
Refer to manual for exact dimensions (typically around 2400-2600 mm to top of cab/exhaust)
Operating Weight:
Refer to manual for exact weight (typically around 2500-3000 kg)
Operator Interface:
Basic analog gauges for speed, RPM, temperature, oil pressure. Indicator lights for warning systems.
Powertrain Features:
Mechanical PTO engagement, differential lock control lever, draft control for 3-point hitch.
Auxiliary Ports:
Hydraulic remotes for external implements (typically 2-4).
Engine Oil Change:
Typically every 250 hours or annually (refer to manual for specific API/ACEA specifications)
Transmission Oil Change:
Typically every 1000-1500 hours (refer to manual for specific fluid type, e.g., UTTO)
Hydraulic Oil Change:
Typically every 1000-1500 hours (refer to manual for specific fluid type, e.g., UTTO/Hy-Tran)
Engine Oil Viscosity:
Likely 15W-40 or 20W-50 (refer to manual for exact specification and API rating, e.g., API CD/CE)
Hydraulic Fluid Type:
Universal Tractor Transmission Oil (UTTO) or equivalent meeting Fiat specifications.
Coolant Type:
Ethylene Glycol based, heavy-duty antifreeze (50/50 mix with distilled water recommended)
Transmission Fluid Capacity:
Refer to manual (typically 35-50 liters for transmission and hydraulics combined)
Engine Oil Capacity:
Refer to manual (typically 8-12 liters)
Coolant Capacity:
Refer to manual (typically 15-20 liters)
Common Wear Points:
Hydraulic pump wear, PTO clutch engagement, front axle kingpins, starter motor reliability.
Electrical Issues:
Wiring harness degradation due to age and vibration, starter solenoid issues.
Engine Performance:
Potential loss of power due to fuel system wear (injectors, pump), turbocharger issues (if equipped).
Manufacturer History:
Fiat Trattori (now part of CNH Industrial) has a long and renowned history in agricultural machinery dating back to the early 20th century.
Series Context:
The 90 Series represented a significant advancement in Fiat's tractor lineup, known for their robustness and reliability in various agricultural applications. The '55' designation typically refers to the approximate horsepower class.
Technological Advancements:
Introduction of features like hydrostatic power steering, improved PTO clutch systems, and more comfortable operator stations.
Production Period:
The 90 Series was primarily produced from the mid-1980s to the early 1990s.
