The John Deere 8770 is a 4WD four-wheel drive from the 8070 series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1993 to 1996. The John Deere 8770 is equipped with a 10.1 L (619.0 cu·in) six-cylinder diesel engine and one of three transmissions: a partially synchronized transmission with 12 forward and 3 reverse gears, a two-speed power shift transmission with 24 forward and 6 reverse gears or a full power shift transmission with 12 forward and 2 reverse gears.
The JD 8770 four-wheel drive used the John Deere engine. It is a 10.1 L, 10,144 cm2, (619.0 cu·in) six-cylinder turbocharged aftercooled diesel engine with 130.0 mm (5.12 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. The compression ratio rating is 15.75:1. This engine produced 304.2 PS (223.7 kW; 300.0 HP) at 2,100 rpm of output power.
The John Deere 8770 is equipped with hydrostatic power steering, hydraulic wet discs brakes, Sound-Gard cab (standard) and 832.7 liters (220 US gal.; 183.2 Imp. gal) fuel tank.
John Deere 8770 Specifications
| General Specifications | |
| Model | John Deere 8770 |
| Length | 6,830 mm (268.9 in) |
| Width | – |
| Height | – |
| Wheel base | 3,400 mm (133.9 in) |
| Weight | 14,950 kg (32,959 lbs) |
| Fuel tank capacity | 832.7 liters (220 US gal.; 183.2 Imp. gal) |
| Battery | Two 12V, CCA 925A |
| Cabin type | Sound-Gard cab (standard) |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 10.1 L, 10,144 cm2, (619.0 cu·in) |
| Bore and stroke | 130.0 mm X 127.0 mm (5.12 in X 5 in) |
| Compression ratio | 15.75:1 |
| Horsepower | 304.2 PS (223.7 kW; 300.0 HP) at 2,100 rpm |
| Starter | Electric |
| Oil capacity: | 32.0 L (33.8 US. qt, 28.2 Imp. qt.) |
| Coolant capacity: | 54.9 L (58 US. qt, 48.3 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×4 articulated 4WD |
| Steering type | Hydrostatic power |
| Brakes | Hydraulic wet discs |
| Final drive | Inboard planetary |
| Transmission model | Syncro |
| Transmission type | Partially synchronized with hydraulic wet disc clutch |
| Gears | 12 forward and 3 reverse |
| Transmission model | PowrSync |
| Transmission type | Two-speed power shift with hydraulic wet disc clutch |
| Gears | 24 forward and 6 reverse |
| Transmission model | Power Shift |
| Transmission type | Full power shift with hydraulic wet disc clutch |
| Gears | 12 forward and 2 reverse |
| Tires | |
| Front tires | Ag: 24.5R-32, 18.4R-38, 20.8R-38, 710/70R38, 18.4R-42, 20.8R-42,18.4R-46 |
| Rear tires | Ag: 24.5R-32, 18.4R-38, 20.8R-38, 710/70R38, 18.4R-42, 20.8R-42,18.4R-46 |
| Three-Point Hitch | |
| Category | III (optional) |
| Control type | Draft sensing |
| Lift capacity | 6,795 kg (14,980 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent with hydraulic wet disc clutch |
| Rear PTO speed | 1000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center pressure compensated |
| Hydraulic capacity | 143.8 L (38 US. gal, 31.6 Imp. gal.) |
| Pressure | 2530 psi (174.4 bar) |
| Valves | Rear: 3 to 5 |
| Pump flow | 44.8 gpm (169.6 lpm) |
| SCV flow | 33.3 gpm (126.1 lpm) |
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