Wikitractor

Nuffield PM-4

Production ended · 2WD

Engine power

40.8 hp

Weight
5,307 lb
Engines
1 Gasoline
Built
no record
Price new
no record

Power

Engine40.8 hp unspecified
PTOno record
Drawbar34.2 hp claimed
Drawbar, tested33.7 hp
Belt pulley43.5 hp claimed
Belt pulley, tested38.4 hp
Listed power40 hp engine basis

Engines

Morris Motors 3.8L 4-cyl gasolineGasoline · 4 cyl230 ci
Engine details
Morris Motors 3.8L 4-cyl gasoline
Bore × stroke
3.94 in × 4.72 in
Rated speed
2,000 rpm
Rated power
40.8 hp
Torque
226 lb·ft at 950 rpm
Compression
6:1
Cooling
liquid-cooled vertical L-head

Transmissions

5-speed geargear5F / 1R

Weight

Weight5,307 lb operating
Ballasted7,765 lb

Dimensions

Wheelbase78 in
Length121.7 in
Ground clearance21 in
Front axle clearance17 in
Front tread, narrowest52.8 in
Front tread, widest70.9 in
Rear tread, narrowest53.2 in
Rear tread, widest88.2 in

Capacities

Fuel tank16.8 gal
Auxiliary fuel1.8 gal

Hydraulics

Systemopen center
Pump flowno record
Pressure1,200 psi

Hitch

Rear lift capacityno record

PTO

Rear PTO speeds540 (1.375)
Engine rpm at PTO speed528@1400

Chassis

Drive2WD
SteeringManual steering
BrakesIndependent mechanical expanding band brakes
CabOpen operator station

Tires

Front6.00-16
Rear11.00-36

Production

FactoriesBirmingham, England
Built byNuffield

Variants

  • PM4 gasoline standard
  • DM4 diesel standard
  • PM3V gasoline tricycle
  • DM3V diesel tricycle

Literature

  • The Nuffield Universal Tractor 1956
  • The Nuffield Universal Tractor 1956