Starting drill, power take-off engagement, three-point lift work with ploughs and harrows, servicing intervals, wiring, storage: this factory operator manual walks a Fiat 55-66 or 60-66 through every system the person in the seat actually touches. Publication 603.64.049.00 runs 95 pages in English and covers the 8035 series diesel engines fitted to both tractors.
Guessing a relief valve setting or a service interval from a forum thread is how lift pumps and front axles get ruined. Here the Specification and Servicing Schedule sections carry the figures Fiat actually published, and dedicated chapters handle the DT four wheel drive models, the 20-speed and reverser transmissions, the No-Spin differential, and the heated cab version.
As a PDF it rides on your phone or as a printout in the toolbox, so the answer is out in the field with you while the weather window is still open.
Complete the set for your 55-66, 60-66
What's Inside This Fiat 55-66, 60-66 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Service | 10-12 | Authorized Shops, Repair Work, Overhaul Work, Skilled Servicemen |
| Tractor Identification Data | 13 | Frame Type, Frame Number, Tractor Data Plate, Engine Type, Engine Number |
| Safety Precautions | 14-20 | General Safety, Tractor Starting, Operation Safety |
| Controls and Instruments | 21-25 | Instrument Panel, Control Board |
| Operation | 26-36 | Engine Starting, Starting and Stopping, Power Take-Off |
| Guide to Lift Operation | 37-52 | Moldboard Ploughs, Disc Ploughs, Harrows, Sub-Soiler, Ditchers, Cultivators |
| Servicing Schedule | 53-57 | Maintenance Schedule |
| Electrical System | 58-60 | Battery Maintenance |
| Wiring Diagram | 61-63 | Headlamps, Alternator, Oil Pressure Indicator, Air Cleaner Indicator, Fuel Level Indicator, Starter |
| Specification | 64-69 | Engine Model, Bore and Stroke, Displacement, Compression Ratio, Fuel System, Lift Capacity |
| Dt and 60-66 Dt Tractors | 70-74 | Front Wheel Drive, Front Axle, Steering, Front Track Adjustment, Tire Matching |
| Speed Version | 75-76 | Pinion Drive, Creeper Gear, Transmission, Forward Gears, Reverse Ratios |
| Reverser Version | 77-78 | Reverser-Splitter Unit, Forward Speeds, Reverse Speeds, Travel Direction |
| No-Spin Version | 79-81 | Splined Sleeves, Dog Clutch Rings, Differential Unit, Front Axle Ring Gear Housing |
| Heated and Ventilated Cab Version | 82-88 | Cab Features |
| Tractor Storage | 89-90 | Fuel Injection Pump, Engine Oil, Cleaner Oil, Engine Cooling System, Battery, Front Axle, Rear Transmission |
| Servicing Chart | 92-95 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Wheel nuts torque | 294 Nm | p. 46 |
| Engine oil change interval | 200 hours | p. 54 |
| Fan belt deflection | 10 to 15 mm | p. 53 |
| Engine Valve Clearance (Intake) | 0.25 mm | p. 53 |
| Engine Valve Clearance (Exhaust) | 0.35 mm | p. 53 |
| Fuel Injector Release Pressure | 230 to 238 bar | p. 53 |
| Hydraulic Pump Output | 32.8 liter/min | p. 67 |
| Hydraulic Relief Valve Setting | 186 bar | p. 67 |
| 55-66 | ||
| Operating Weight (55-66) | 2400 kg | p. 64 |
| 60-66 | ||
| Operating Weight (60-66) | 2440 kg | p. 64 |
| DT models | ||
| Front Wheel Drive Relief Valve Setting (2-wheel drive) | 100 bar | p. 72 |
| Front Wheel Drive Relief Valve Setting (4-wheel drive) | 125 bar | p. 72 |
