Position control, draft control, PTO engagement, gearbox variants, servicing intervals: the systems a Fiat 70-66 or 80-66 owner actually touches are what this 89 page operator manual works through, from the instrument panel to the three-point hitch. Publication 603.64.065.00R3 covers both models along with the DT four wheel drive, 20-Speed, Reverser, No-Spin, and heated cab versions, built around the 8045.05 and 8045.06 engines.
Guessing on a tractor this age gets expensive fast. A clutch run without free travel becomes a split-tractor job, and a lift worked in the wrong control mode can bend a check link before you notice. The Servicing Schedule lists the free travel, deflection, and clearance figures that keep those jobs honest.
It arrives as a PDF download, so you can print the pages the job needs, take them to the bench, and let them get greasy while the weather window holds.
Complete the set for your 70-66, 80-66
What's Inside This Fiat 70-66, 80-66 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Service | 5-8 | Authorized Shops, Repair Work, Overhaul Work, Spare Parts |
| Tractor Identification Data | 9 | Tractor Data Plate, Engine Type, Engine Number |
| Safety Precautions | 10-16 | General Safety, Tractor Starting, Track Width, PTO Guarding |
| Controls and Instruments | 17-21 | Instrument Panel, Battery Charge Indicator, Starter Switch, Transmission and Splitter |
| Operation | 22-32 | Engine Starting and Stopping, Cold-Weather Starting, Seat Adjustment, Power Take-Off, Hydraulic Lift |
| Guide to Lift Operation | 33-49 | Position Control, Combined Draft and Position Control, Implement Attachment, Remote Control Valves, Front and Rear Tracks, Ballasting, Towing |
| Servicing Schedule | 50-55 | Maintenance Schedule, Cleaning, Cooling System, Fuel System Bleeding |
| Electrical System | 56-58 | Battery, Fuses, Auxiliary-Battery Starting |
| Specification | 59-64 | Dimensions and Weights, Speeds, Engine Data, Cooling System, Wheels and Tires, Service Brake |
| 70-66 DT and 80-66 DT Four Wheel Drive | 65-69 | Live Front Axle, Turning Radius, Front Wheel Drive Operation, Front Track Adjustment |
| Speed Version | 70-71 | Pinion Drive Creeper Gear, Forward Gear Range, Reverse Ratios, Speeds at Full Load |
| Reverser Version | 72-73 | Reverser Lever, Forward and Reverse Travel, Servicing Caution |
| No-Spin Version | 74-75 | Locked-Differential Behaviour, Disengagement on Turns, Straight-Line Operation |
| Heated and Ventilated Cab Version | 76-82 | Doors, Tilting Windshield, Windshield Washer, Ventilation, Heating, Cab-Version Wiring Diagram |
| Storage and Variants | 83-84 | Extended Storage, Engine Protection, Variants and Accessories |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel nuts torque | 294 N·m | p. 38 |
| Maximum lateral swing of lower links | 120 mm | p. 33 |
| Front track clamp bolts 1 and 2 torque | 220 N·m | p. 38 |
| Front track clamp bolt 3 torque | 39 N·m | p. 38 |
| Brakes - pedal free travel | 45 mm (1.77 in) | p. 50 |
| Master clutch - pedal free travel | 25 mm (1 in) | p. 48 |
| P.T.O. clutch - withdrawal lever pin free travel | 4.5 mm (0.18 in) | p. 50 |
| Battery voltage | 12V | p. 62 |
| Starter output | 3.5 kW | p. 64 |
| Engine Valve Clearance (Intake) | 0.25 mm | p. 50 |
| Engine Valve Clearance (Exhaust) | 0.35 mm | p. 50 |
| Fuel Injector Release Pressure | 230 to 238 bar | p. 50 |
