John Deere 8420 vs John Deere 8440 - compare
Compare tractors: John Deere 8420 vs John Deere 8440
John Deere 8420 vs John Deere 8440 compare - general information
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Brand | John Deere | John Deere |
| Model | John Deere 8420 | John Deere 8440 |
| Series | n.d. | n.d. |
| Previous model | John Deere 8410 | – |
| Next model | John Deere 8430 | John Deere 8450 |
| Smaller | John Deere 8320 | – |
| Larger | John Deere 8520 | John Deere 8640 |
| Years | from 2002 to 2005 y. | from 1979 to 1982 y. |
| Cab with ROPS | No | No |
| Reviews | John Deere 8420 reviews New! | John Deere 8440 reviews New! |
John Deere 8420 vs John Deere 8440 - performance
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Maximum power (HP / kW) | 314 KM (230.88235294118 kW) | 215 KM (160.3 kW) |
| Engine RPM | 2200 rpm | 2100 rpm |
| Fuel consumption | 197 g/kWh ( rpm) | n.d. |
| Fuel tank capacity | 606 l. | n.d. |
| Max. speed | n.d. | n.d. |
John Deere 8420 vs John Deere 8440 - engine
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Fuel type | Diesel | Diesel |
| Engine producer | n.d. | n.d. |
| Engine model | John Deere | John Deere |
| Engine type | Diesel (diesel engine) | Diesel (diesel engine) |
| Engine capacity | 8.1 l. | 7.672 l. |
| Strokes, qty | n.d. | n.d. |
| Cylinders | 6 | 6 |
| Compression | n.d. | n.d. |
| Bore | 116 mm | 116 mm |
| Stroke | 129 mm | 121 mm |
| Maximum torque | n.d. | n.d. |
| Air filter | n.d. | n.d. |
| Fuel filter | n.d. | n.d. |
| Fuel filter chambers, qty | n.d. | n.d. |
| Oil filter | n.d. | n.d. |
| Oil pump | n.d. | n.d. |
| Speed control (control) | n.d. | n.d. |
| Injection pump | piston pump, direct fuel injection | n.d. |
| Injectors | multi holes injector | n.d. |
| Injection pressure | n.d. | n.d. |
| Cooling system | n.d. | liquid cooled engine |
| Forced cooling | n.d. | n.d. |
| Cooler | Yes | |
| Thermostat | Yes | |
| Cooler type | tubular-plate cooler | |
| Coolant system capacity | n.d. | n.d. |
| Clutch | n.d. | n.d. |
John Deere 8420 vs John Deere 8440 - turbocharger
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Turbocharger | Yes (Turbo Diesel engine) | Yes |
| Dual turbocharger | No | No |
| Intercooler | No | No |
| Aftercooler | No | No |
| Wastegate valve | No | No |
| Variable geometry | No | No |
| Additional parameters | – | – |
John Deere 8420 vs John Deere 8440 - electronics
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Supply voltage starter (V) | 12 V | 12 V |
| Ground | negative ground | negative ground |
| Battery (V) | 12 V | 6 V |
| Battery, qty | 1 | 0 |
| Charging system | Alternator | Alternator |
| Charging system producer | n.d. | n.d. |
| Ignition | Manual | Manual |
| Rear stop lamp | Yes | Yes |
| Rear agricultural lamp | n.d. | n.d. |
| Cock lamp | No | No |
John Deere 8420 vs John Deere 8440 - PTO
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| PTO rpm | 1000 rpm | 1000 rpm |
| PTO control | manual | manual |
John Deere 8420 vs John Deere 8440 - brakes
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| ABS | No | No |
| Brake assist | No | No |
| Braking system | n.d. | n.d. |
| Differential | No | No |
| Brake type | disc brakes, wet brakes, hydraulic | disc brakes, wet brakes, hydraulic |
| Discs | Single | Single |
John Deere 8420 vs John Deere 8440 - dimensions
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Weight | from 9100 kg to 14000 kg (depending by model) | from 12061 kg (depending by model) |
| Weight with ROPS | n.d. | n.d. |
| Weight with cab | 9100 kg | n.d. |
| Length | 5850 mm | 5689 mm |
| Height | 3200 mm | n.d. |
| Width | 2540 mm | n.d. |
| Clearance | n.d. | n.d. |
| Rear clearance | n.d. | n.d. |
| Front track width | n.d. | from 1600 mm to 3302 mm |
| Rear track width | n.d. | from 1600 mm to 3302 mm |
| Wheelbase | 3020 mm | 3170 mm |
| Front tires | 16.9R30 | 18.4-34 |
| Rear tires | n.d. | n.d. |
| Max. mass of the trailer without brakes | 1500 kg | 1500 kg |
| Max. mass of the trailer with brakes | n.d. | n.d. |
| Max. axle load | n.d. | n.d. |
| Max. total weight | n.d. | n.d. |
| Turning radius | n.d. | n.d. |
John Deere 8420 vs John Deere 8440 - drive
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Drive system | 4x4, MFWD, 4WD (depending by model) | 4x4, 4WD (depending by model) |
| Additional | all-wheel drive, all four wheels at all times and it can be used full, front drive axle, mechanical drive, front drive axle | all-wheel drive, all four wheels at all times and it can be used full |
| Permanent 4-wheel drive | Yes | Yes |
| Permanent systems that constantly power all the wheels | Yes | Yes |
| Dynamic allocation of power between the axles | n.d., AWD drive | n.d., AWD drive |
| Independent Link Suspension | None | None |
| Articulated suspension | – | Yes |
| Crawler drive | No | No |
| Hydrostatic steering | Yes | Yes |
| Differential | n.d. | n.d. |
| Steering | rod | rod |
| Front rods | n.d. | n.d. |
| Rear planetary drives | n.d. | n.d. |
| Front planetary drives | n.d. | n.d. |
John Deere 8420 vs John Deere 8440 - hydraulics
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Three-point hitch | 11000 kg | n.d. |
| Three-point hitch type | n.d. | n.d. |
| Three-point hitch performance | n.d. | n.d. |
| Three-point hitch pressure | n.d. | n.d. |
| Load Sensing | No | No |
| Closed | n.d. | n.d. |
| Central | No | No |
| Constant flow | No | No |
| Constant pressure | No | No |
| Control system | n.d. | n.d. |
| Pump | n.d. | n.d. |
| Two-section distributor | n.d. | n.d. |
| Quick couplings | n.d. | n.d. |
| Auto Lift | n.d. | n.d. |
John Deere 8420 vs John Deere 8440 - transmission
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Synchronous transmission | Yes | n.d. |
| Transmission mechanically synchronized | No, electro-hydraulic control | No, electro-hydraulic control |
| PowerShift | Yes | Yes |
| PowerShuttle | Yes | No |
| Additional | two clutches (dual clutch gearbox), electro-hydraulic clutch control, fast shifting, Reversing mechanism | two clutches (dual clutch gearbox), electro-hydraulic clutch control, fast shifting |
| Hydrostatic transmission | Yes | n.d. |
| Forward gears | 16 | 16 |
| Reverse gears | 5 | 6 |
| Creeper | n.d. | n.d. |
John Deere 8420 vs John Deere 8440 - equipment
| Specs | John Deere 8420 | John Deere 8440 |
|---|---|---|
| Clevis | Yes (???) | Yes (???) |
| Lower catch | n.d. | n.d. |
| Air conditioning | n.d. | n.d. |