| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Brand | John Deere | Valmet | 
| Model | John Deere 6620 | Valmet 8100 | 
| Series | n.d. | n.d. | 
| Previous model | – | – | 
| Next model | – | – | 
| Smaller | – | – | 
| Larger | – | – | 
| Years | n.d. | from 1990 to 1996 y. | 
| Cab with ROPS | No | No | 
| Reviews | John Deere 6620 reviews New! | Valmet 8100 reviews New! | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Maximum power (HP / kW) | 125.12 KM (92 kW) | 120 KM (89.5 kW) | 
| Engine RPM | n.d. | 1550 rpm | 
| Fuel consumption | 206 g/kWh ( rpm) | n.d. | 
| Fuel tank capacity | 207 l. | n.d. | 
| Max. speed | n.d. | n.d. | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Fuel type | Diesel | Diesel | 
| Engine producer | n.d. | Valmet | 
| Engine model | n.d. | Valmet | 
| Engine type | Diesel (diesel engine) | Diesel (diesel engine) | 
| Engine capacity | 6.788 l. | 6.6 l. | 
| Strokes, qty | n.d. | n.d. | 
| Cylinders | 6 | 6 | 
| Compression | n.d. | n.d. | 
| Bore | n.d. | 108 mm | 
| Stroke | n.d. | 120 mm | 
| Maximum torque | 543 Nm / 1495 rpm | 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. | n.d. | 
| Forced cooling | n.d. | n.d. | 
| Cooler | ||
| Thermostat | ||
| Cooler type | ||
| Coolant system capacity | n.d. | n.d. | 
| Clutch | n.d. | n.d. | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Turbocharger | Yes (Turbo Diesel engine) | No | 
| Dual turbocharger | No | Not applicable | 
| Intercooler | No | Not applicable | 
| Aftercooler | No | Not applicable | 
| Wastegate valve | No | Not applicable | 
| Variable geometry | No | Not applicable | 
| Additional parameters | – | – | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Supply voltage starter (V) | n.d. | n.d. | 
| Ground | n.d. | n.d. | 
| Battery (V) | n.d. | n.d. | 
| Battery, qty | n.d. | n.d. | 
| Charging system | Generator | Generator | 
| 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 | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| PTO rpm | n.d. | 540 rpm | 
| PTO control | n.d. | manual | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| ABS | No | No | 
| Brake assist | No | No | 
| Braking system | n.d. | n.d. | 
| Differential | No | No | 
| Brake type | n.d. | n.d. | 
| Discs | – | – | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Weight | n.d. | from 4681 kg (depending by model) | 
| Weight with ROPS | n.d. | n.d. | 
| Weight with cab | n.d. | n.d. | 
| Length | n.d. | 4750 mm | 
| Height | n.d. | 2771 mm | 
| Width | n.d. | n.d. | 
| Clearance | n.d. | n.d. | 
| Rear clearance | n.d. | n.d. | 
| Front track width | n.d. | n.d. | 
| Rear track width | n.d. | n.d. | 
| Wheelbase | n.d. | 2540 mm | 
| Front tires | n.d. | 14.9R28 | 
| 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. | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Drive system | 4x4, 4WD (depending by model) | 4x4, MFWD, 4WD (depending by model) | 
| Additional | all-wheel drive, all four wheels at all times and it can be used full | all-wheel drive, all four wheels at all times and it can be used full, front drive axle, mechanical drive, front drive axle | 
| 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 | – | – | 
| Crawler drive | No | No | 
| Hydrostatic steering | No | No | 
| 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. | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Three-point hitch | 7474 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. | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Synchronous transmission | Yes | n.d. | 
| Transmission mechanically synchronized | No, electro-hydraulic control | n/a | 
| PowerShift | Yes | No | 
| PowerShuttle | No | No | 
| Additional | two clutches (dual clutch gearbox), electro-hydraulic clutch control, fast shifting, Reversing mechanism | – | 
| Hydrostatic transmission | Yes | n.d. | 
| Forward gears | unlimited (ranges: - 4) | 36 | 
| Reverse gears | unlimited (ranges: - 4) | 36 | 
| Creeper | n.d. | n.d. | 
| Specs | John Deere 6620 | Valmet 8100 | 
|---|---|---|
| Clevis | Yes (???) | Yes (???) | 
| Lower catch | n.d. | n.d. | 
| Air conditioning | n.d. | n.d. |