John Deere 6155M VS Allis Chalmers HD21 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        John Deere 6155M
General Infos| Make | John Deere | 
| Model | 6155M | 
| Country | United states | 
| Production | From 2015 | 
| Price | - | 
| Tractor type | Row Crop tractor | 
| Fuel | diesel | 
| Service repair manual | John Deere 6155M 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 | 13073 lbs or 5929 kg | 
| Length | 186.1 inches [472 cm] | 
| Width | 100.4 inches [255 cm] | 
| Height | 114.9 inches [291 cm] | 
| Wheelbase | 108.9 inches [276 cm] | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | - | 
| Front tread size | 63.3 to 87.4 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 414 ci or 6.8 L | 
| Cylinders | 6 cylinders 24 valves | 
| Engine power | 164 hp or 122.3 kW | 
| Engine RPM | 2100 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 71 gal or 268.7 L | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | electric | 
| Starter volts | 12 V | 
| Parts And Accessories | John Deere 6155M 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 | 20 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 | closed-center pressure-and-flow compensated | 
| Valves | 3 | 
| Pump flow | 30 gpm or 113.6 lpm | 
| SVC flow | 26.4 gpm or 99.9 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 | 123 hp or 91.7 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 | 8198 lbs or 3718 kg | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Allis Chalmers HD21
General Infos| Make | Allis Chalmers | 
| Model | HD21 | 
| Country | United states | 
| Production | From 1954 Until 1965 | 
| Price | - | 
| Tractor type | Agricultural Crawler tractor | 
| Fuel | diesel | 
| Service repair manual | Allis Chalmers HD21 Manual | 
Dimensions, sizes and tires
| AG front tires | tracks | 
| AG rear tires | tracks | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 45500 lbs or 20638 kg | 
| Length | 198 inches [502 cm] | 
| Width | - | 
| Height | 99 inches [251 cm] | 
| Wheelbase | - | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | - | 
| Front tread size | - | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 844 ci or 13.8 L | 
| Cylinders | 6 cylinders | 
| Engine power | 225 hp or 167.8 kW | 
| Engine RPM | 1800 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 135 gal or 511.0 L | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 24 V | 
| Parts And Accessories | Allis Chalmers HD21 Parts | 
| Batteries number | 2 | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | - | 
| Charging system | - | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | - | 
| Trans type | torque converter | 
| Trans gears | 2 forward and 1 reverse | 
| Clutch system | - | 
| Wheel drive | crawler | 
| Final drive | - | 
| Steering | - | 
| Braking system | contracting band | 
| 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 | - | 
| Drawbar horsepower | 135.12 hp or 100.8 kW | 
| Fuel consumption | - | 
| Pulling power | 40563 lbs or 18399 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 | - | 
Related tractor comparison
                        
                    
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                    John Deere 6155M ATC Terratrac 300
                        
                    
                    John Deere 6155M Allis Chalmers HD11
                        
                    
                    John Deere 6155M Fahr D88
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Useful links and guides ....
- John Deere provided us with the latest version of its 6155M service repair manual
 - Find All mechanical and electrical parts and accessories of John Deere 6155M farm-tractor here
 
- Get your Allis Chalmers HD21 manual book version
 - Cabine, electrical And mechanical parts for Allis Chalmers HD21 farm-tractor here