Allis Chalmers HD3 VS Ursus 1634 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Allis Chalmers HD3
General Infos| Make | Allis Chalmers | 
| Model | HD3 | 
| Country | United states | 
| Production | From 1960 Until 1968 | 
| Price | - | 
| Tractor type | - | 
| Fuel | diesel | 
| Service repair manual | Allis Chalmers HD3 Manual | 
Dimensions, sizes and tires
| AG front tires | 7-inch track | 
| AG rear tires | 7-inch track | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 7645 lbs or 3467 kg | 
| Length | 108.75 inches [276 cm] | 
| Width | - | 
| Height | - | 
| Wheelbase | - | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | 48 inches | 
| Front tread size | 48 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 175 ci or 2.9 L | 
| Cylinders | 4 cylinders | 
| Engine power | - | 
| Engine RPM | 1650 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | Roosa-Master injection | 
| Fuel tank size | 14 gal or 53.0 L | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | electric | 
| Starter volts | 12 V | 
| Parts And Accessories | Allis Chalmers HD3 Parts | 
| Batteries number | 2 | 
| Batteries voltage | 6 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | - | 
| Charging system | - | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | Power Director | 
| Trans type | mechanical shuttle | 
| Trans gears | 4 forward and reverse | 
| Clutch system | wet disc (Power Director) | 
| Wheel drive | crawler | 
| Final drive | - | 
| Steering | mechanical clutches | 
| Braking system | mechanical contracting band | 
| Cabin type | Open operator station | 
| Differentiel lock | - | 
| System | open center | 
| Valves | 1 to 3 | 
| Pump flow | 15 gpm or 56.8 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | 16.5 gal or 62.5 L | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | - | 
| Drawbar horsepower | 26.17 hp or 19.5 kW | 
| Fuel consumption | 2.6 gal/hour or 9.8 l/hour | 
| Pulling power | 8207 lbs or 3722 kg | 
| Claimed power | - | 
| Real power | 32.53 hp or 24.3 kW | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | optional | 
| Rear PTO RPM | 540 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | 2.6 gal/hour or 9.8 l/hour | 
| Hitch system | - | 
| Rear hitch | - | 
| Rear hitch lift | - | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Ursus 1634
General Infos| Make | Ursus | 
| Model | 1634 | 
| Country | Poland | 
| Production | From 1991 Until 2009 | 
| Price | - | 
| Tractor type | - | 
| Fuel | diesel | 
| Service repair manual | Ursus 1634 Manual | 
Dimensions, sizes and tires
| AG front tires | 14.9-24 | 
| AG rear tires | 18.4-38 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 11442 lbs or 5190 kg | 
| Length | 177 inches [449 cm] | 
| Width | 89.3 inches [226 cm] | 
| Height | 117.4 inches [298 cm] | 
| Wheelbase | 106.5 inches [270 cm] | 
| Ground clearance | 19.1 inches [48 cm] | 
| Turning radius | - | 
| Rear tread size | 65/67.9/70.9/73.8 inches | 
| Front tread size | 67.3/71.3 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 416.4 ci or 6.8 L | 
| Cylinders | 6 cylinders | 
| Engine power | 152.9 hp or 114.0 kW | 
| Engine RPM | 2200 (rpm) | 
| Torque | 417.9 lb-ft or 566.7 Nm | Torque RPM | 1650 (rpm) | 
| Fuel type | diesel | 
| Fuel injection | direct injection | 
| Fuel tank size | 44.9 gal or 169.9 L | 
| Oil capacity | 20.1 qts or 19.0 L | 
| Oil change | - | 
| Starter motor | electric | 
| Starter volts | 24 V | 
| Parts And Accessories | Ursus 1634 Parts | 
| Batteries number | 2 | 
| Batteries voltage | 12 V | 
| Battries Amps | 135 amps | 
| Cold Amps | - | 
| Ground force | - | 
| Charging system | alternator | 
| Charging Volts | 12 V | 
| Charging Amps | 55 amps | 
| Trans system | - | 
| Trans type | two-speed power shift | 
| Trans gears | 12 forward and 6 reverse | 
| Clutch system | 380mm hydraulic dry disc | 
| Wheel drive | 4x4 MFWD 4WD | 
| Final drive | - | 
| Steering | power | 
| Braking system | dry disc | 
| Cabin type | Cab standard with heat | 
| Differentiel lock | mechanical rear | 
| System | - | 
| Valves | - | 
| Pump flow | 10.8 gpm or 40.9 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | 12.15 gal or 46.0 L | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | - | 
| Drawbar horsepower | - | 
| Fuel consumption | - | 
| Pulling power | - | 
| Claimed power | 138.1 hp or 103.0 kW | 
| Real power | - | 
| Engine @RPM | 540@1890 (rpm) | 
| PTO Clutch | hydraulic | 
| Rear PTO | independent | 
| Rear PTO RPM | 540 (rpm) | 
| Front PTO | 1000 | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | - | 
| Hitch system | position and draft control | 
| Rear hitch | II | 
| Rear hitch lift | 12125 lbs or 5499 kg | 
| Front hitch | - | 
| Front hitch lift | - | 
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Useful links and guides ....
- Allis Chalmers provided us with the latest version of its HD3 service repair manual
 - Find All mechanical and electrical parts and accessories of Allis Chalmers HD3 farm-tractor here
 
- Get your Ursus 1634 manual book version
 - Cabine, electrical And mechanical parts for Ursus 1634 farm-tractor here