John Deere 6120M VS Allis Chalmers 8550 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        John Deere 6120M
General Infos| Make | John Deere | 
| Model | 6120M | 
| Country | United states | 
| Production | From 2015 | 
| Price | - | 
| Tractor type | Utility tractor | 
| Fuel | diesel | 
| Service repair manual | John Deere 6120M Manual | 
Dimensions, sizes and tires
| AG front tires | 10.00-16 | 
| AG rear tires | 460/85R38 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 11486 lbs or 5210 kg | 
| Length | 176.6 inches [448 cm] | 
| Width | 100.4 inches [255 cm] | 
| Height | 113.3 inches [287 cm] | 
| Wheelbase | 101.6 inches [258 cm] | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | - | 
| Front tread size | 60.4 to 80.4 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 276 ci or 4.5 L | 
| Cylinders | 4 cylinders 16 valves | 
| Engine power | 127 hp or 94.7 kW | 
| Engine RPM | 2100 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 51 gal or 193.0 L | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | electric | 
| Starter volts | 12 V | 
| Parts And Accessories | John Deere 6120M Parts | 
| Batteries number | - | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | negative | 
| Charging system | alternator | 
| Charging Volts | 14 V | 
| Charging Amps | 120 amps | 
| Trans system | AutoQuad PLUS | 
| Trans type | four-speed power shift | 
| Trans gears | 24 forward and reverse | 
| Clutch system | wet disc | 
| Wheel drive | 4x2 2WD | 
| Final drive | inboard planetary | 
| Steering | power | 
| Braking system | hydraulic wet disc | 
| Cabin type | Cab standard with air-conditoning | 
| Differentiel lock | electro-hydraulic front and rear | 
| System | open center | 
| Valves | 3 | 
| Pump flow | 21.1 gpm or 79.9 lpm | 
| SVC flow | 21.1 gpm or 79.9 lpm | 
| Steering flow | - | 
| Tank capacity | - | 
| Hydraulic pressure | 2900 psi or 200.0 bar | 
| Max flow | - | 
| Drawbar type | Cat | 
| Claimed power | - | 
| Drawbar horsepower | - | 
| Fuel consumption | - | 
| Pulling power | - | 
| Claimed power | 94 hp or 70.1 kW | 
| Real power | - | 
| Engine @RPM | 540@1932 (rpm) | 
| PTO Clutch | electro-hydraulic | 
| Rear PTO | independent | 
| Rear PTO RPM | 540 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | - | 
| Hitch system | electronic lower-link draft sensing | 
| Rear hitch | IIIN/II | 
| Rear hitch lift | 5582 lbs or 2531 kg | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Allis Chalmers 8550
General Infos| Make | Allis Chalmers | 
| Model | 8550 | 
| Country | United states | 
| Production | From 1978 Until 1981 | 
| Price | 86,753 USD | 
| Tractor type | Four wheel Drive (4WD) tractor | 
| Fuel | diesel | 
| Service repair manual | Allis Chalmers 8550 Manual | 
Dimensions, sizes and tires
| AG front tires | 20.8x34 | 
| AG rear tires | 20.8x34 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 26,400 lbs or 11975 kg | 
| Length | 285 inches [723 cm] | 
| Width | 95.5 inches [242 cm] | 
| Height | 139 inches [353 cm] | 
| Wheelbase | 126 inches [320 cm] | 
| Ground clearance | 17 inches [43 cm] | 
| Turning radius | - | 
| Rear tread size | 62 to 123 inches | 
| Front tread size | 62 to 123 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 731 ci or 12.0 L | 
| Cylinders | 6 cylinders 24 valves | 
| Engine power | 300 hp or 223.7 kW | 
| Engine RPM | 2500 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 170 gal or 643.5 L | 
| Oil capacity | 46 qts or 43.5 L | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 12 V | 
| Parts And Accessories | Allis Chalmers 8550 Parts | 
| Batteries number | 4 | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | negative | 
| Charging system | alternator | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | Power Director | 
| Trans type | partial power shift | 
| Trans gears | 20 forward and 4 reverse | 
| Clutch system | - | 
| Wheel drive | 4x4 articulated 4WD | 
| Final drive | - | 
| Steering | hydrostatic power | 
| Braking system | hydraulic wet discs | 
| Cabin type | Acousta Cab II standard with heat and air-conditioning | 
| Differentiel lock | - | 
| System | closed center | 
| Valves | 3 or 4 | 
| Pump flow | 74.9 gpm or 283.5 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | - | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | 210 hp or 156.6 kW | 
| Drawbar horsepower | 217.92 hp or 162.5 kW | 
| Fuel consumption | 17.5 gal/hour or 66.2 l/hour | 
| Pulling power | 26,220 lbs or 11893 kg | 
| Claimed power | 250 hp or 186.4 kW | 
| Real power | 253.88 hp or 189.3 kW | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | independent | 
| Rear PTO RPM | 1000 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | 17.4 gal/hour or 65.9 l/hour | 
| Hitch system | - | 
| Rear hitch | IV/III | 
| 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 6120M service repair manual
 - Find All mechanical and electrical parts and accessories of John Deere 6120M farm-tractor here
 
- Get your Allis Chalmers 8550 manual book version
 - Cabine, electrical And mechanical parts for Allis Chalmers 8550 farm-tractor here