Tractor · 1950Unverified
Nuffield PM-4 Universal
Nuffield PM-4 Universal — Utility tractor · 41 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
41 hp
Max power
25.1 kW
Weight
2407 kg
Hover a source tag to verify
Overview
ManufacturerNuffieldReference
Utility tractorReference
Built in Birmingham, EnglandReference
Two-wheel driveReference
Manual steeringReference
Independent mechanical expanding band brakesReference
Open operator station.Reference
Variants
PM4gasoline standardReference
DM4diesel standardReference
PM3Vgasoline tricycleReference
DM3Vdiesel tricycleReference
Engine
Morris Motors 3.8L 4-cyl gasolineReference
Fuel tank63.6 LReference
Aux. fuel6.8 LReference
Engine30.4 kWReference
Drawbar (claimed)25.5 kWReference
Belt (claimed)32.4 kWReference
Drawbar (tested)25.1 kWReference
Belt (tested)28.6 kWReference
Morris MotorsReference
gasolineReference
4-cylinderReference
liquid-cooled vertical L-headReference
Displacement3.8 LReference
Bore/Stroke100 x 120 mmReference
Power30.4 kWReference
Air cleaneroil bathReference
Compression6:1Reference
Rated RPM2000Reference
Torque306.5 NmReference
Torque RPM950Reference
Starter volts12Reference
Coolant capacity17.0 LReference
Belt power (max)28.6 kWReference
Max power25.1 kWReference
Transmission
5-speed gearReference
TypegearReference
Gears5 forward and 1 reverseReference
Clutch280mm dry discReference
PTO & Hydraulics
Typeopen centerReference
Pressure82.7 barReference
Pressure137.9 barReference
Rear PTO Type540 (1.375)Reference
Engine RPM528@1400Reference
Dimensions
Wheelbase198 cmReference
Weight2407 kgReference
Front tire6.00-16Reference
Rear tire11.00-36Reference
Ag front6.00-16Reference
Ag rear11.00-36Reference
Ag front7.50-18Reference
Ag rear13.00-30Reference
Ag rear14.00-30Reference
Ag rear9.00-36Reference
Length309 cmReference
Height (hood)151 cmReference
Height (exhaust)204 cmReference
Operating weight2407 kgReference
Ballasted weight3522 kgReference
Ground clearance53 cmReference
Clearance (front axle)43 cmReference
Clearance (drawbar)54 cmReference
Front tread134 to 180 cmReference
Rear tread135 to 224 cmReference
Test results
Gasoline 5-speed 2WDAugust 29 - September 8, 1955Link: Nebraska Tractor Test 559 fileReference
Belt fuel use (max)14.8 l/hourReference
Drawbar performanceReference
Gear 3 used for power test.Reference
Max pull2365 kgReference
Gear 1 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.