J.I. Case
644
Farm tractor · 1972–1979 · 14 hp
J.I. Case644
The J.I. Case 644 is a farm tractor manufactured from 1972 to 1979. It features a Kohler K321 engine, and manual steering. The transmission is a hydraulic drive type with infinite forward and reverse (2-range).
Engine
| Engine | Kohler K321 |
|---|---|
| Fuel Type | gasoline |
| Cylinders | 1 |
| Cooling | air-cooled horizontal-shaft |
| Displacement | 31.27 ci (0.5 L) |
| Bore | 3.5 in (89 mm) |
| Stroke | 3.25 in (83 mm) |
| Compression Ratio | 6 |
| Power Gross | 14 hp (10.4 kW) |
| Power Rated | 14 hp (10.4 kW) |
| Starter Volts | 12 |
| Starter Type | electric |
| Oil Capacity | 1.5 qts (1.4 L) |
| Manufacturer | Kohler |
| Rated | 3,600 RPM |
| Sparkplug Gap | 0.03 in (0.64 mm) |
| Oil Change Interval Hours | 25 |
Transmission
| Transmission Type | hydraulic drive |
|---|---|
| Transmission Model | Hy-Drive |
| Gears | infinite forward and reverse (2-range) |
| Available Options | hydraulic drive |
Hydraulics
| Type | open center |
|---|---|
| Pump Flow | 9 gpm (34.1 lpm) |
| Pressure | 2,300 psi (158.6 bar) |
| System Capacity | 3 gal (11.4 L) |
Hitch
| Rear Type | 0 |
|---|
Dimensions
| Length | 108 in (274 cm) |
|---|---|
| Width | 41 in (104 cm) |
| Height | 43.25 in (109 cm) |
| Wheelbase | 48 in (121 cm) |
| Ground Clearance | 8.25 in (20 cm) |
| Front Tread | 29.75 in (75 cm) |
| Rear Tread | 32.4 in (82 cm) |
Weight
| Weight | 1,130 lbs (512 kg) |
|---|
Tires & Tracks
| Front Industrial | 5.70-8 |
|---|---|
| Rear Industrial | 27x8.50-15 |
Fuel
| Capacity | 5 gal (18.9 L) |
|---|
Steering
| Type | manual |
|---|