Introduction
Nuffield 3/45 Agricultural Tractor
The Nuffield 3/45 is a two-wheel-drive agricultural tractor manufactured in Bathgate, Scotland, between 1967 and 1969. It belongs to the classic Nuffield line, designed to provide reliable field performance for mid-sized agricultural operations during the late 1960s.
Engine and Performance
The tractor is powered by a 3-cylinder BMC diesel engine with a displacement of 2.8 liters (173 cubic inches). It is liquid-cooled and produces 45 horsepower (33.6 kW) at a rated speed of 2200 RPM. The engine utilizes a firing order of 1-3-2 and includes a 12-volt starting system.
Transmission and Drivetrain
The transmission system consists of five gears in two ranges, providing a total of 10 forward speeds and 2 reverse speeds. Power is transferred via a 280mm dry disc clutch. The final drives are of the spur gear type, ensuring durable power delivery to the rear wheels.
Hydraulics and PTO
The Nuffield 3/45 is equipped with a rear Category II/I hitch featuring directional control and top-link draft sensing for implement management. It includes a rear PTO providing 540 RPM at 1800 engine RPM, with an independent PTO configuration available as an option.
Operator Station and Chassis
The machine features an open operator station with manual steering, though power steering was available as an optional upgrade. Braking is handled by mechanical disc brakes. The tractor has a wheelbase of 189 cm (74.8 inches) and an operating weight of 2023 kg (4460 lbs), providing a stable platform for field work.
Conclusion
With its straightforward mechanical design and 45-horsepower engine, the Nuffield 3/45 is suited for general farming tasks, light traction work, and implement operation, offering a robust solution for operators requiring a dependable, period-correct machine.
Nuffield 3/45 Manuals & Documentation
Download the manuals and documentation available for the Nuffield 3/45: repair and workshop manuals, operator's handbooks, spare-parts catalogs and technical leaflets — free PDF files.
Archive documentation provided for reference, hosted by Tractor-Info.
Production Information of Nuffield, 3/45
- Built in Bathgate, Scotland
| Manufacturer | Nuffield |
|---|
Dimension and Tires Information of Nuffield, 3/45
| Rear tread | 52 to 80 inches [132 to 203 cm] |
|---|---|
| Wheelbase | 74.8 inches [189 cm] |
| Height (exhaust) | 82.7 inches [210 cm] |
| Height (hood) | 56.7 inches [144 cm] |
| Length | 116.9 inches [296 cm] |
| Clearance (front axle) | 16.1 inches [40 cm] |
| Operating weight | 4460 lbs [2023 kg] |
| Width | 67.7 inches [171 cm] |
| Front tread | 52 to 76 inches [132 to 193 cm] |
| Clearance (drawbar) | 13.4 inches [34 cm] |
| Ground clearance | 19.1 inches [48 cm] |
| Ag front | 5.50-16 |
|---|---|
| Ag rear | 11.00-32 |
| Ag rear(optional) | 7.50-16 |
| Ag rear | 11.00-28 |
| Ag rear(optional) | 13.00-28 |
| Ag front | 6.00-16 |
Engine Specifications of Nuffield, 3/45
- BMC
- Liquid-cooled
- Diesel
- 3-cylinder
| Oil capacity | 9 qts [8.5 L] |
|---|---|
| Displacement | 173 ci [2.8 L] |
| Rated RPM | 2200 |
| Bore/Stroke | 3.975x4.724 inches [101 x 120 mm] |
| Coolant capacity | 10.8 qts [10.2 L] |
| Starter volts | 12 |
| Firing order | 1-3-2 |
| Power | 45 hp [33.6 kW] |
Transmission Information of Nuffield, 3/45
Transmission variants 1
- Five gears, plus reverse, in two ranges.
| Type | Gear |
|---|---|
| Gears | 10 forward and 2 reverse |
| Clutch | 280mm dry disc |
Mechanical Specs of Nuffield, 3/45
- Two-wheel drive
- Mechanical disc brakes
- Open operator station.
| Steering(optional) | Power |
|---|---|
| Final drives | Spur gear |
| Steering | Manual |
Power Information of Nuffield, 3/45
| Rear PTO | Transmission |
|---|---|
| Engine RPM | 540@1800 |
| Engine RPM(optional) | Independent |
| Rear PTO Type | 540 (1.375) |
Three-Point Hitch of Nuffield, 3/45
| Rear Type | II/I |
|---|---|
| Control | Directional control and top-link draft sensing |
Where it sits
With 45 HP, the Nuffield 3/45 sits between 10/42 (43 HP) and 4/65 (65 HP) in Nuffield's range. Its power puts it in the 44th percentile of 1960s models in our database (709 machines).
Frequently asked questions
How much horsepower does the Nuffield 3/45 have?
The Nuffield 3/45 delivers 45 HP.
What years was the Nuffield 3/45 produced?
The Nuffield 3/45 was produced in 1967-1969.
What engine does the Nuffield 3/45 have?
The Nuffield 3/45 is powered by a Diesel, 3-cylinder engine.
What transmission does the Nuffield 3/45 use?
The Nuffield 3/45 uses a Gear transmission.
How much does the Nuffield 3/45 weigh?
The Nuffield 3/45 weighs 4460 lbs [2023 kg].
Is the Nuffield 3/45 4WD?
The Nuffield 3/45 is available in 2WD.