John Deere 6620 Premium VS Allis Chalmers 7040 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        John Deere 6620 Premium
General Infos| Make | John Deere | 
| Model | 6620 Premium | 
| Country | United states | 
| Production | From 2001 Until 2006 | 
| Price | - | 
| Tractor type | Utility tractor | 
| Fuel | diesel | 
| Service repair manual | John Deere 6620 Premium Manual | 
Dimensions, sizes and tires
| AG front tires | 14.9R28 | 
| AG rear tires | 18.4R38 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 11,532 lbs or 5230 kg | 
| Length | - | 
| Width | - | 
| Height | - | 
| Wheelbase | - | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | - | 
| Front tread size | - | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 414.1 ci or 6.8 L | 
| Cylinders | 6 cylinders | 
| Engine power | 125 hp or 93.2 kW | 
| Engine RPM | 2300 (rpm) | 
| Torque | 392.0 lb-ft or 531.6 Nm | Torque RPM | 1500 (rpm) | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 54.7 gal or 207.0 L | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | electric | 
| Starter volts | 12 V | 
| Parts And Accessories | John Deere 6620 Premium Parts | 
| Batteries number | - | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | negative | 
| Charging system | alternator | 
| Charging Volts | - | 
| Charging Amps | 90 amps | 
| Trans system | AutoQuad II | 
| Trans type | partial power shift | 
| Trans gears | 24 forward and reverse | 
| Clutch system | - | 
| Wheel drive | 4x4 MFWD 4WD | 
| Final drive | - | 
| Steering | hydrostatic power | 
| Braking system | wet disc | 
| Cabin type | Cab standard | 
| Differentiel lock | - | 
| System | closed center load sensing | 
| Valves | - | 
| Pump flow | 25.4 gpm or 96.1 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | - | 
| Hydraulic pressure | 2900 psi or 200.0 bar | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | - | 
| Drawbar horsepower | - | 
| Fuel consumption | - | 
| Pulling power | - | 
| Claimed power | 110 hp or 82.0 kW | 
| Real power | - | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | independent | 
| Rear PTO RPM | 540 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | - | 
| Hitch system | - | 
| Rear hitch | II/IIIN | 
| Rear hitch lift | 16,360 lbs or 7420 kg | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Allis Chalmers 7040
General Infos| Make | Allis Chalmers | 
| Model | 7040 | 
| Country | United states | 
| Production | From 1975 Until 1977 | 
| Price | 24,550 USD | 
| Tractor type | - | 
| Fuel | diesel | 
| Service repair manual | Allis Chalmers 7040 Manual | 
Dimensions, sizes and tires
| AG front tires | 10.00-16 | 
| AG rear tires | 20.8-38 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 11,700 lbs or 5307 kg | 
| Length | 173.6 inches [440 cm] | 
| Width | 95.5 inches [242 cm] | 
| Height | - | 
| Wheelbase | 106 inches [269 cm] | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | 64 to 91 inches | 
| Front tread size | 62 to 88 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 426 ci or 7.0 L | 
| Cylinders | 6 cylinders | 
| Engine power | - | 
| Engine RPM | 2300 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 51 gal or 193.0 L | 
| Oil capacity | 19 qts or 18.0 L | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 12 V | 
| Parts And Accessories | Allis Chalmers 7040 Parts | 
| Batteries number | - | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | - | 
| Charging system | alternator | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | Power Shift | 
| Trans type | partial power shift | 
| Trans gears | 12 forward and 2 reverse | 
| Clutch system | - | 
| Wheel drive | 4x2 2WD | 
| Final drive | - | 
| Steering | hydrostatic power | 
| Braking system | differential hydraulic wet disc | 
| Cabin type | Acousta cab standard with heater | 
| Differentiel lock | power standard | 
| System | closed center | 
| Valves | 2 or 3 | 
| Pump flow | 22 gpm or 83.3 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | 24.1 gal or 91.2 L | 
| Hydraulic pressure | - | 
| Max flow | 45 gpm or 170.3 lpm | 
| Drawbar type | - | 
| Claimed power | 117 hp or 87.2 kW | 
| Drawbar horsepower | 114.34 hp or 85.3 kW | 
| Fuel consumption | 8.8 gal/hour or 33.3 l/hour | 
| Pulling power | 13,547 lbs or 6144 kg | 
| Claimed power | 136 hp or 101.4 kW | 
| Real power | 136.15 hp or 101.5 kW | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | independent | 
| Rear PTO RPM | 540 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | 8.8 gal/hour or 33.3 l/hour | 
| Hitch system | - | 
| Rear hitch | III/II | 
| Rear hitch lift | - | 
| Front hitch | - | 
| Front hitch lift | - | 
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Useful links and guides ....
- John Deere provided us with the latest version of its 6620 Premium service repair manual
 - Find All mechanical and electrical parts and accessories of John Deere 6620 Premium farm-tractor here
 
- Get your Allis Chalmers 7040 manual book version
 - Cabine, electrical And mechanical parts for Allis Chalmers 7040 farm-tractor here