Two manuals, one download. Fiat printed the Series 66 workshop manual as a 1987 revision. It reprints only the pages that changed and keeps the original page numbers, so an owner could swap the loose leaves into the book he already had. That older book is the 466/566/666/766 workshop manual, and the revision refers back to it constantly. Both are included here, 491 pages together.
That is why a section in the Series 66 manual can start partway in, at page 9 or later: the earlier pages sit in the base manual, in the same section, under the same numbers. Where both books print the same page number, the Series 66 revision is the newer one and supersedes it.
Between them you get electrical wiring diagrams, exploded views of the transmission and splitter, injection pump timing with Bosch VE and C.A.V. DPS calibration data, Valeo and Luk clutch overhauls, bevel drive and no-spin differential rebuilds, front axle king pin and wheel bearing adjustments, and the hydraulic lift troubleshooting chart.
Coverage runs from the 45-66 to the 80-66, including DT, V and F variants, plus the 466 to 766 models in the base book. Both PDFs are searchable, so you can type the spec you need instead of leafing through both books.
Complete the set for your 45-66 to 80-66 Series
- Operator Manual: Fiat 45-66 Tractor Operator Manual (incl. Wiring)
- Operator Manual: Fiat 70-66, 80-66, 70-66 DT, 80-66 DT Operator Manual — Wiring Diagrams
- Operator Manual: Fiat 55-66, 60-66 Operator Manual — Wiring Diagrams
What's Inside This Fiat 45-66 to 80-66 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| MANUAL 1 of 2 · Series 66 Revision · Print No. 603.54.228.02 · 239 pages | ||
| General | 4-7 | Contents, general instructions, safety precautions |
| Specifications: 55-66 to 80-66 | 9-15 | Engine, power train, hydraulic lift, capacities, main dimensions, tractor 65-66 data |
| Engine: Fuel System | 16-19 | Bosch VE and C.A.V. DPS injection pump removal, installation and timing |
| Front Wheel Drive: Live Front Axle (466DT-766DT) | 20-25 | Bevel pinion bearing adjustment, differential overhaul, no-spin differential |
| Front Wheel Drive: Sections | 26-27 | Front wheel drive sections, king pin bearing adjustment |
| Hydraulic Lift Unit | 28-31 | Draught control adjustment, maximum lift arm travel, valve checks |
| Model 45-66: General and Specifications | 32-45 | Contents, engine, power train, capacities, torque data |
| Model 45-66: Engine | 46-49 | C.A.V. DPS injection pump calibration data, performance data |
| Power Train | 50-91 | Valeo and Luk clutch overhaul, transmission and splitter, bevel drive and differential, brakes, final drives, power take-off |
| Front Axle and Steering | 92-97 | Front axle, power steering, hydraulic cylinder overhaul, relief valve calibration |
| Front Wheel Drive: Front Axle (45-66) | 98-103 | Removal, bevel pinion bearing shim, king pin and wheel bearing adjustment |
| Hydraulic Lift Unit | 104-119 | Lift and lift pump overhaul, position and draught control, remote control valves, trailer brake valve |
| Electrical System | 120-123 | Wiring diagram, charging system, starter, switches, instruments |
| Service Tools | 124-127 | Tool numbers by section, steering hydraulic test equipment |
| V and F Series Supplement | 130-189 | 45-66V, 55-66V, 55-66F, 60-66F, 70-66F, 80-66F: specifications, power train, front axle, front wheel drive, hydraulics, electrical |
| LP Series Supplement | 192-237 | 55-66LP, 60-66LP, 70-66LP: specifications, power train, front wheel drive, hydraulics, electrical |
| MANUAL 2 of 2 · Base Manual 466 / 566 / 666 / 766 · Print No. 603.54.228.00 · 252 pages | ||
| General | 3-10 | Contents, general instructions, safety precautions |
| Specifications | 11-24 | Engine, power train, front axle, hydraulic lift, electrical system, capacities |
| Engine | 25-74 | Engine block, cylinder head and sleeves, crank gear, valve gear, lubrication, cooling, fuel system |
| Power Train | 75-136 | Clutch, transmission and splitter, creeper and reverser, bevel drive and differential, brakes, final drives, power take-off |
| Front Axle and Steering | 137-164 | Front axle, steering knuckle overhaul, manual steering box, power steering overhaul and bleeding |
| Front Wheel Drive: Front Axle | 165-182 | Removal, final drive and wheel hub, king pin bearing adjustment, wheel bearing adjustment, bevel drive and differential, no-spin differential |
| Hydraulic Lift Unit | 183-228 | Lift removal and overhaul, lift pump, implement attachment, remote control valves, trailer brake remote control valve |
| Electrical System | 229-246 | Wiring diagrams, charging system, starter, lighting, signals, fuse box, instruments |
| Service Tools | 247-250 | Tool numbers by section |
Page numbers above are PDF pages, not the numbers printed inside the book.
