Target Audience:
Do-it-yourselfers and experienced mechanics.
Reputation:
Fiat Trattori tractors from this era are generally regarded for their robust build quality and operational simplicity.
Content Scope:
Repair, maintenance, rebuilding, refurbishing, and restoration.
Cost Effectiveness:
Inexpensive way to keep the vehicle working properly and fix problems.
Methodology:
Step-by-step instructions based on complete disassembly, with hundreds of photos and illustrations.
Engine Service:
Detailed engine overhaul and repair procedures.
Fuel System Service:
Diagnosis and repair of fuel injection and delivery systems.
Cooling System Service:
Maintenance and repair of radiators, pumps, and thermostats.
Electrical System Service:
Wiring diagrams, component testing, and repair of electrical circuits.
Chassis Service:
Repair and maintenance of frame, suspension, and steering components.
Emission Control Service:
Information on emission control systems and diagnostics.
Hydraulic System:
Operation, maintenance, and repair of the tractor's hydraulic system, including pumps, valves, and cylinders.
Braking System:
Service and repair of the tractor's braking mechanisms (likely internal expanding shoe or disc brakes).
Powertrain Service:
Coverage of engine, transmission, final drives, and differentials.
Steering System:
Service and repair of power steering components or manual steering linkages.
Drive Axles:
Maintenance and repair of front and rear drive axles, including differentials and final drives.
Operator Station:
Information on operator controls, seating, and cab (if equipped) systems.
Maintenance Procedures:
Scheduled maintenance, lubrication, and routine checks.
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation.
Troubleshooting Guide:
Diagnostic procedures for identifying and resolving common issues.
Rebuilding Procedures:
Detailed instructions for rebuilding major components like the engine, transmission, and hydraulic pump.
Diagnostics:
Troubleshooting flowcharts and diagnostic strategies for identifying problems.
Reassembly Procedures:
Detailed guidance on putting components back together correctly after repair or overhaul.
Depth:
Comprehensive, covering basic maintenance to complete rebuilds.
Specifications Data:
Includes torque specifications, clearances, and tolerances critical for proper assembly and function.
Engine Type:
Diesel (Specific engine details not provided in product information, typical for Fiat Trattori series would include 4-cylinder or 6-cylinder naturally aspirated or turbocharged engines).
Horsepower Range:
Likely in the 60-80 HP range, inferred from '70' designation, but exact figures not specified.
Injection System:
Likely Mechanical Direct Injection or Indirect Injection, with diagnostic and repair procedures covered.
Induction:
Naturally Aspirated or Turbocharged (model dependent, manual would cover specifics).
Cylinder Configuration:
Typically inline 3, 4, or 6 cylinders, depending on the exact 70-90 variant.
Cooling Method:
Liquid-cooled
Transmission Type:
Information not explicitly provided, but typically a Synchromesh gearbox with multiple speed options (e.g., 12 forward, 4 reverse) and potentially a creeper gear or dual-clutch option for certain models.
Power Take Off:
PTO operation and maintenance likely covered.
Gear Reduction:
Potential for hi-lo range or shuttle shift functionality depending on specific configuration.
Operating Weight:
Information not provided, but typically in the range of 2500-3500 kg for tractors in this class.
Front Axle Weight:
Information not provided, but important for ballast calculations.
Rear Axle Weight:
Information not provided, but important for traction and stability.
Wheelbase:
Information not provided, but typical for tractors of this era and power class.
Features:
Basic instrumentation for engine monitoring (tachometer, oil pressure, temperature, fuel level). No modern infotainment features expected.
Features:
Basic mechanical controls for steering, braking, and power take-off engagement. No electronic driver aids.
Engine Oil Change:
Typical intervals would be around 250-500 operating hours, but specific recommendations are in the manual.
Transmission Oil Change:
Typically every 500-1000 operating hours, manual will specify.
Hydraulic Oil Change:
Typically every 500-1000 operating hours, manual will specify.
Engine Oil Viscosity:
Likely SAE 15W-40 or 10W-30 API CG-4 or similar diesel engine oil. Specific grade and capacity will be in the manual.
Hydraulic Fluid Type:
Typically a high-quality UTF (Universal Tractor Transmission Oil) or ISO VG 46 hydraulic oil. Manual will specify exact type and capacity.
Coolant Specification:
Ethylene glycol based coolant with appropriate antifreeze and anti-corrosion additives for diesel engines.
Common Wear Points:
Clutch wear, PTO clutch packs, hydraulic pump efficiency, and potential for injector issues are common in older diesel tractors of this era. Manual addresses maintenance and repair for these.
Electrical Gremlins:
Older tractors can develop issues with wiring harnesses, switches, and solenoids; manual provides wiring diagrams for diagnosis.
Cooling System Leaks:
Hose degradation or radiator corrosion can lead to leaks, addressed in the cooling system section.
Schedule Coverage:
Comprehensive maintenance schedule for all major components and systems.
Manufacturer:
Fiat Trattori (now part of CNH Industrial).
Series:
Part of the Fiat Trattori 90 Series, a highly successful and popular line of tractors from the 1980s and 1990s, known for their reliability and versatility.
Key Competitors Era:
Competed with tractors from John Deere, Massey Ferguson, Ford, and others during its production run.
Production Period:
The 90 series was primarily produced from the early 1980s through the 1990s.
