John Deere
644D
Farm tractor · 1985–1986 · 165 hp
John Deere644D
The John Deere 644D is a farm tractor manufactured from 1985 to 1986. It features a John Deere 6-466T engine, and four-post with canopy steering. The transmission is a power shift type with 4 forward and 2 reverse.
Engine
| Engine | John Deere 6-466T |
|---|---|
| Fuel Type | diesel |
| Cylinders | 6 |
| Cooling | liquid-cooled |
| Turbocharger Status | turbocharged diesel |
| Displacement | 466 ci (7.6 L) |
| Bore | 4.56 in (116 mm) |
| Stroke | 4.75 in (121 mm) |
| Power Gross | 165 hp (123 kW) |
| Power Net | 155 hp (115.6 kW) |
| Torque Peak | 480 lb-ft (650.9 Nm) |
| Torque Peak | 1,400 RPM |
| Air Cleaner | dry |
| Starter Volts | 12 |
| Starter Type | electric |
| Oil Capacity | 20 qts (18.9 L) |
| Coolant Capacity | 29 qts (27.4 L) |
| Manufacturer | John Deere |
| Rated | 2,200 RPM |
Transmission
| Transmission Type | power shift |
|---|---|
| Gears | 4 forward and 2 reverse |
| Available Options | 4-speed power shift |
Hydraulics
| Type | open center |
|---|---|
| Pump Flow | 63 gpm (238.5 lpm) |
| Pressure | 2,625 psi (181 bar) |
Dimensions
| Length | 276.7 in (702 cm) |
|---|---|
| Height Rops | 126 in (320 cm) |
| Wheelbase | 115 in (292 cm) |
| Front Tread | 80 in (203 cm) |
| Rear Tread | 80 in (203 cm) |
Weight
| Weight | 29,320 lbs (13,299 kg) |
|---|---|
| Operating | 29,320 lbs (13,299 kg) |
Tires & Tracks
| Front Ag | 20.5-25 |
|---|---|
| Rear Ag | 20.5-25 |
| Front Industrial | 20.5-25, 16.00-24 |
| Rear Industrial | 20.5-25, 16.00-24, 23.5-25 |
Fuel
| Capacity | 67 gal (253.6 L) |
|---|
Steering
| Type | four-post with canopy |
|---|
Cab
| Cab | optional with available air-conditioning |
|---|