Nuffield PM-4 VS Allis Chalmers HD15 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Nuffield PM-4
General Infos| Make | Nuffield | 
| Model | PM-4 | 
| Country | England | 
| Production | From 1950 Until 1957 | 
| Price | - | 
| Tractor type | Farm/Agricultural tractor | 
| Fuel | gasoline | 
| Service repair manual | Nuffield PM-4 Manual | 
Dimensions, sizes and tires
| AG front tires | 7.50x18 | 
| AG rear tires | 14.00x30 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 5,307 lbs or 2407 kg | 
| Length | - | 
| Width | - | 
| Height | - | 
| Wheelbase | - | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | - | 
| Front tread size | - | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 230 ci or 3.8 L | 
| Cylinders | 4 cylinders | 
| Engine power | 48 hp or 35.8 kW | 
| Engine RPM | 2000 (rpm) | 
| Torque | 226 lb-ft or 306.5 Nm | Torque RPM | 950 (rpm) | 
| Fuel type | gasoline | 
| Fuel injection | - | 
| Fuel tank size | - | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 12 V | 
| Parts And Accessories | Nuffield PM-4 Parts | 
| Batteries number | 1 | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | - | 
| Charging system | - | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | - | 
| Trans type | - | 
| Trans gears | 5 forward and 1 reverse | 
| Clutch system | - | 
| Wheel drive | 4x2 2WD | 
| Final drive | - | 
| Steering | - | 
| Braking system | independent mechanical expanding band | 
| Cabin type | - | 
| Differentiel lock | - | 
| System | - | 
| Valves | - | 
| Pump flow | - | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | - | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | 27 hp or 20.1 kW | 
| Drawbar horsepower | 33.66 hp or 25.1 kW | 
| Fuel consumption | - | 
| Pulling power | - | 
| Claimed power | - | 
| Real power | 38.40 hp or 28.6 kW | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | - | 
| Rear PTO RPM | - | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | 3.9 gal/hour or 14.8 l/hour | 
| Hitch system | - | 
| Rear hitch | - | 
| Rear hitch lift | - | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Allis Chalmers HD15
General Infos| Make | Allis Chalmers | 
| Model | HD15 | 
| Country | United states | 
| Production | From 1951 Until 1955 | 
| Price | - | 
| Tractor type | Agricultural Crawler tractor | 
| Fuel | diesel | 
| Service repair manual | Allis Chalmers HD15 Manual | 
Dimensions, sizes and tires
| AG front tires | 20-inch tracks | 
| AG rear tires | 20-inch tracks | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 27850 lbs or 12632 kg | 
| Length | 181 inches [459 cm] | 
| Width | 96.75 inches [245 cm] | 
| Height | 95 inches [241 cm] | 
| Wheelbase | - | 
| Ground clearance | 14.375 inches [36 cm] | 
| Turning radius | - | 
| Rear tread size | 74 inches | 
| Front tread size | 74 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 426 ci or 7.0 L | 
| Cylinders | 6 cylinders | 
| Engine power | - | 
| Engine RPM | 1600 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 91.5 gal or 346.3 L | 
| Oil capacity | 20 qts or 18.9 L | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 12 V | 
| Parts And Accessories | Allis Chalmers HD15 Parts | 
| Batteries number | 2 | 
| Batteries voltage | 6 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | - | 
| Charging system | - | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | constant mesh | 
| Trans type | - | 
| Trans gears | 6 forward and 3 reverse | 
| Clutch system | - | 
| Wheel drive | crawler | 
| Final drive | - | 
| Steering | hydraulic steering clutches | 
| Braking system | - | 
| Cabin type | Open operator station | 
| Differentiel lock | - | 
| System | - | 
| Valves | - | 
| Pump flow | - | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | - | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | 82 hp or 61.1 kW | 
| Drawbar horsepower | 104.4 hp or 77.9 kW | 
| Fuel consumption | - | 
| Pulling power | 29400 lbs or 13335 kg | 
| Claimed power | - | 
| Real power | - | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | - | 
| Rear PTO RPM | - | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | - | 
| Hitch system | - | 
| Rear hitch | - | 
| Rear hitch lift | - | 
| Front hitch | - | 
| Front hitch lift | - | 
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Choose another tractor
Useful links and guides ....
- Nuffield provided us with the latest version of its PM-4 service repair manual
 - Find All mechanical and electrical parts and accessories of Nuffield PM-4 farm-tractor here
 
- Get your Allis Chalmers HD15 manual book version
 - Cabine, electrical And mechanical parts for Allis Chalmers HD15 farm-tractor here