Part of the New Holland Operator Manuals.
Bleeding air out of the fuel system on a 66S series tractor takes five minutes when you know which screws to crack first, and half a morning when you are guessing. This 117 page operator manual walks the New Holland 55-66S, 60-66S, 65-66S, 70-66S and 80-66S, plus the 70-66 and 80-66 high-clearance versions, end to end: controls and instruments, the PTO and ground-speed PTO, hydraulic lift and implement hitch, track adjustment, ballasting and the full maintenance schedule.
Separate chapters cover the four-wheel drive front axle, creeper and reverser gearboxes, the 40 km/h version and its brakes, high-clearance row-crop models and the heated and ventilated cab, with engine, transmission and hydraulic lift specifications gathered in one section.
Guessing costs money: the wrong lift setting can mean a bent implement and a second teardown, and a mistimed repair can cost a weather window. Buy it once, download the PDF and keep it in the shop for the life of the tractor.
What's Inside This New Holland 66S & 66 HC Series Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Work Safely | 4 | Warning Signs, Safety Rules, Traffic Regulations, Accident Prevention |
| Safety Decals | 5 | Engine Stop, PTO Shaft, PTO Clutch Control Lever, Operator Instrument Panel |
| Service | 6-8 | Dealer Network, Repair, Overhaul, Skilled Servicemen |
| Identification Data | 9 | Frame Type, Serial Number, Engine Type, Identification Plate |
| Safety Precautions | 10-15 | Engine Gaskets, Asbestos Powder, First Aid Kit, Rotating Parts, Power Take-Off Shielding |
| Controls and Instruments | 16-23 | Instrument Panel, Control Board, Transmission and Splitter, Transmission and Reverser |
| Operation | 24-59 | Starting and Stopping, Seat Adjustment, Power Take-Off, Ground-Speed Power Take-Off, Hydraulic Lift, Guide to Lift Operation, Hydraulic Lift Implement Hitch, Lower Link Settings |
| Maintenance | 60-70 | Maintenance Schedule, Engine Cooling Plant, Fuel System Bleeding, Electrical System (Battery, Starting Notes, Fuses, Headlamp Alignment) |
| Specifications | 71-78 | Engine Specifications, Transmission Specifications, Hydraulic Lift Specifications |
| Four-Wheel Drive Tractors | 79-83 | Front Axle, Drive Shaft, Bevel Drive, Planetary Final Drives, Steering |
| Creeper Speed and Reverser Tractors | 84-85 | Synchromesh Reverser, Creeper Speed Unit, Control Levers, Gear Ratios |
| Reverser Tractors | 86 | Splitter-Reverser Unit, Control Lever, Reverse Gear Range, Tractor Speeds |
| Km/H Version | 87-93 | Brakes |
| High-Clearance Tractors | 94-97 | Hydraulic Lift Implement Hitch, Track Width Adjustment, Front Tracks, Rear Tracks, Fuel System |
| Dt Version | 98-100 | Live Front Axle, Steering, Front Wheel Drive Operation, Front Track Adjustment, Self-Locking Differential |
| Heated and Ventilated Cab Version | 101-108 | Cab Doors and Windows, Cab Interior Maintenance |
| Optionals - Variants and Accessories | 109-117 | Mechanical Reverser, Creeper Speed Box, Power Take-Off, Remote Control Valves, Trailer Hydraulic Brake Valve, ROPS Frame |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Solvay soda proportion for system flushing | 250 grams of soda every 10 liters of water | p. 62 |
| Battery capacity (3-cylinder engine models) | 90/100 Ah | p. 66 |
| Battery capacity (4-cylinder engine models) | 100/132 Ah | p. 66 |
| Tightening torque of wheel-to-hub nuts | 260 Nm | p. 81 |
| Tightening torque of disc-to-rim nut | 216 Nm | p. 81 |
| Starting motor output (models 65-66S, 70-66S, 80-66S) | 3.5 kW | p. 78 |
| Starting motor output (models 55-66S, 60-66S) | 2.5 kW | p. 78 |
| Hydraulic pump output | 32.8 l/min | p. 75 |
| Hydraulic pump relief valve pressure setting | 186 bar | p. 73 |
| rim-to-disc nuts torque | 205 to 245 Nm (152 to 181 ft.lb) | p. 95 |
| disc-to-hub nuts torque | 255 Nm (188 ft.lb) | p. 95 |
| Engine Oil Change Interval | 200 hours | p. 61 |
