Nuffield PM-4 Universal
The Nuffield PM-4 Universal is a tractor produced by Nuffield. It is equipped with a 230 ci 3.8 L engine. The rated power output is 40.8 hp 30.4 kW. Transmission: 5 forward and 1 reverse. Operating weight: 5,307 lbs 2407 kg.
Engine Power
40.8 hp
30.4 kW
Fuel & Capacities
16.8 gal
63.6 L
Transmission
5 forward and 1 reverse
Operating Weight
5,307 lbs
2407 kg
Nuffield PM-4 Universal Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
 | 1950 - 1957
Utility tractor |
|---|---|
1950 - 1957 | |
Utility tractor | |
Production | |
|---|---|
Manufacturer | Nuffield |
Utility tractor | |
Built in Birmingham, England | |
Variants | |
|---|---|
PM4 | gasoline standard |
DM4 | diesel standard |
PM3V | gasoline tricycle |
DM3V | diesel tricycle |
Nuffield PM-4 Engine | |
|---|---|
Morris Motors 3.8L 4-cyl gasoline | |
Fuel tank | 16.8 gal
63.6 L |
Aux. fuel | 1.8 gal
6.8 L |
Engine details ...  | |
Nuffield PM-4 Transmission | |
|---|---|
5-speed gear | |
Transmission details ...  |
Nuffield PM-4 Power | |
|---|---|
Engine | 40.8 hp
30.4 kW |
Drawbar (claimed) | 34.2 hp
25.5 kW |
Belt (claimed) | 43.5 hp
32.4 kW |
Drawbar (tested) | 33.66 hp
25.1 kW |
Belt (tested) | 38.4 hp
28.6 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Independent mechanical expanding band brakes | |
Open operator station. |
Hydraulics | |
|---|---|
Type | open center |
Pressure | 1200 psi
82.7 bar |
2000 psi (1955 onward)
137.9 bar | |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 (1.375) |
Engine RPM | 528@1400 |
Dimensions & Tires | |
|---|---|
Wheelbase | 78 inches
198 cm |
Weight | 5,307 lbs
2407 kg |
Front tire | 6.00-16 |
Rear tire | 11.00-36 |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
The Nuffield Universal Tractor published in 1956 |
Engine
Engine Detail — 230 ci / 3.8 L Gasoline
Manufacturer | Morris Motors |
Fuel Type | Gasoline |
Configuration | 4-cylinder, liquid-cooled vertical L-head |
Displacement | 230 ci
3.8 L |
Bore/Stroke | 3.937x4.724 inches
100 x 120 mm |
Power | 40.8 hp
30.4 kW |
Air cleaner | oil bath |
Compression | 6:1 |
Rated RPM | 2000 |
Torque | 226 lb-ft
306.5 Nm |
Torque RPM | 950 |
Starter volts | 12 |
Coolant capacity | 18 qts
17.0 L |
Transmission
Transmission — 5 forward and 1 reverse gear
Type | gear |
Gears | 5 forward and 1 reverse |
Clutch | 280mm dry disc |
 | |
Dimensions
Nuffield PM-4 Tires | |
|---|---|
Ag front | 6.00-16 |
Ag rear | 11.00-36 |
Ag front | 7.50-18 |
Ag rear | 13.00-30 |
14.00-30 | |
9.00-36 | |
Dimensions | |
|---|---|
Wheelbase | 78 inches
198 cm |
Length | 121.7 inches
309 cm |
Height (hood) | 59.5 inches
151 cm |
Height (exhaust) | 80.7 inches
204 cm |
Operating weight | 5,307 lbs
2407 kg |
Ballasted weight | 7,765 lbs
3522 kg |
Ground clearance | 21 inches (at frame)
53 cm |
Clearance (front axle) | 17 inches
43 cm |
Clearance (drawbar) | 21.4 inches
54 cm |
Front tread | 52.8 to 70.9 inches
134 to 180 cm |
Rear tread | 53.2 to 88.2 inches
135 to 224 cm |
Tests
Nebraska Tractor Test 559 | |
|---|---|
Gasoline 5-speed 2WD
August 29 - September 8, 1955
Link: Nebraska Tractor Test 559 file | |
Belt power (max) | 38.4 hp
28.6 kW |
Belt fuel use (max) | 3.9 gal/hour
14.8 l/hour |
Drawbar performance | |
Max power | 33.66 hp
25.1 kW |
Gear 3 used for power test. | |
Max pull | 5216 lbs
2365 kg |
Gear 1 used for pull test. | |
Photos
Nuffield PM-4 Universal tractor photo
Related models
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- Power:
- 42
- Production years:
- 1961 - 1963
Nuffield 10/42
- Power:
- 43.3
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- 1964 - 1966
Nuffield M3
- Power:
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- Production years:
- 1948 - 1961
Nuffield M4
- Power:
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- Production years:
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Nuffield 3/45
- Power:
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- Production years:
- 1967 - 1969