Overview
The Nuffield 3/45 is a farm tractor produced from 1967 to 1969 in Bathgate, Scotland, featuring a 2.8L three-cylinder diesel engine. It is equipped with a 10-speed gear transmission and an open operator station, with an operating weight of 4,460 lbs. The tractor's mechanical configuration includes a rear Type II/I hitch with top-link draft sensing and a transmission-driven 540 RPM PTO.
Ideal Applications
Transmission and Gearing Configuration:
The mechanical gear transmission provides 10 forward and 2 reverse speeds using a layout of five gears plus reverse in two ranges with a 280mm dry disc clutch.
Engine and Power Rating:
The liquid-cooled BMC diesel engine has a displacement of 173 cubic inches and produces 45 hp at 2200 RPM with a claimed PTO power of 39 hp.
Chassis and Tread Dimensions:
The tractor is built on a 74.8-inch wheelbase with adjustable front tread widths from 52 to 76 inches and rear tread widths from 52 to 80 inches.
Production
| Description | Built in Bathgate, Scotland |
|---|---|
| Manufacturer | Nuffield |
Engine
| Engine type | BMC 2.8L 3-cyl diesel |
|---|---|
| Fuel tank | 19.2 gal (72.7 L) |
| Bore/Stroke | 3.975x4.724 inches (101 x 120 mm) |
| Coolant capacity | 10.8 qts (10.2 L) |
| Description | BMC / diesel / 3-cylinder / liquid-cooled |
| Displacement | 173 ci (2.8 L) |
| Firing order | 1-3-2 |
| Oil capacity | 9 qts (8.5 L) |
| Power | 45 hp (33.6 kW) |
| Rated RPM | 2200 |
| Starter volts | 12 |
| PTO (claimed) | 39 hp (29.1 kW) |
Transmission
| Clutch | 280mm dry disc |
|---|---|
| Description | Five gears, plus reverse, in two ranges. |
| Gears | 10 forward and 2 reverse |
| Transmission type | 10-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Mechanical disc brakes |
| Drive type | Two-wheel drive |
| Final drives | spur gear |
| Steering | manual / power OptOptional |
Hitch
| Control | directional control and top-link draft sensing |
|---|---|
| Rear Type | II/I |
PTO
| Engine RPM | 540@1800 |
|---|---|
| Rear PTO | transmission |
| Rear PTO Type | 540 (1.375) |
Dimensions & Tires
| Clearance (drawbar) | 13.4 inches (34 cm) |
|---|---|
| Clearance (front axle) | 16.1 inches (40 cm) |
| Front tread | 52 to 76 inches (132 to 193 cm) |
| Ground clearance | 19.1 inches (48 cm) |
| Height (exhaust) | 82.7 inches (210 cm) |
| Height (hood) | 56.7 inches (144 cm) |
| Length | 116.9 inches (296 cm) |
| Operating weight | 4460 lbs (2023 kg) |
| Rear tread | 52 to 80 inches (132 to 203 cm) |
| Wheelbase | 74.8 inches (189 cm) |
| Width | 67.7 inches (171 cm) |
| Front tire | 5.50-16 |
| Rear tire | 11.00-28 |
| Weight | 4460 lbs (2023 kg) |
| Wheelbase | 74.8 inches (189 cm) |
| Ag front | 5.50-16 / 6.00-16 |
| Ag rear | 11.00-28 / 11.00-32 |
Belt Pulley
| Diameter | 9 inches (22 cm) |
|---|---|
| Speed | 3011 ft/min (low ratio) (917.75 meters/min) |
| Width | 6.5 inches (16 cm) |
References
| Description | BMC Nuffield 3/45 & 4/65 published in 1968 |
|---|
Speeds
| Description | With 11-28 rear tires. |
|---|