Production
| Description | Row-Crop tractor / Built in Rock Island, Illinois, USA |
|---|---|
| Manufacturer | J.I. Case |
| Total built | 2,339 |
Engine
| Engine type | J.I. Case 2.4L 4-cyl gasoline |
|---|---|
| Air cleaner | oil bath |
| Bore/Stroke | 3.375x4.125 inches (86 x 105 mm) |
| Compression | 7.1:1 |
| Coolant capacity | 13 qts (12.3 L) |
| Description | J.I. Case / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 148 ci (2.4 L) |
| Exhaust valve clearance | 0.014 inches (cold) (0.356 mm) |
| Firing order | 1-3-4-2 |
| Fuel system | carburetor |
| Idle RPM | 500-2050 |
| Intake valve clearance | 0.014 inches (cold) (0.356 mm) |
| Rated RPM | 1900 |
| Sparkplug | Champion D-16 |
| Sparkplug gap | 0.025 inches (0.635 mm) |
| Starter | electric |
| Starter volts | 12 |
| Oil capacity | 5 qts (4.7 L) |
| Oil change | 100 h |
| Plows | 3 |
| PTO (claimed) | 37 hp (27.6 kW) |
Transmission
| 1 | Foot clutch |
|---|---|
| 2 | Hand clutch |
| 3 | Throttle |
| 4 | Gear shift |
| 5 | Range shift |
| 6 | Brakes |
| Clutch | 235mm dry disc |
| Description | Four gears, plus reverse, in three ranges. |
| Gears | 4 forward and 1 reverse / 12 forward and 3 reverse |
| Oil capacity | 28 qts (26.5 L) / 28 qts (26.5 L) |
| Transmission | Tripl-Range |
| Type | gear / gear |
| Transmission type | 4-speed gear / 12-speed gear |
| Transmission type | 4-speed gear / 12-speed gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Manual steering / Differential mechanical dry disc brakes |
| Drive type | Two-wheel drive |
Capacity
| Fuel | 13 gal (49.2 L) |
|---|---|
| Hydraulic system | 3 gal (11.4 L) |
Hydraulics
| Capacity | 3 gal (11.4 L) |
|---|---|
| Pressure | 1200 psi (82.7 bar) |
| Type | open center |
Hitch
| Type | Eagle Hitch |
|---|
PTO
| Engine RPM | 540 (1.375) |
|---|---|
| Rear PTO | continuous |
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery AH | 50 |
|---|---|
| Battery volts | 12 |
| Charging system | generator |
| Ground | positive |
Dimensions & Tires
| Clearance (rear axle) | 21.5 inches (54 cm) |
|---|---|
| Front tread | 5.5/11.5 inches (tricycle) (13/29 cm) / 52 to 80 inches (GP) (132 to 203 cm) / 48 to 72 inches (GP) (121 to 182 cm) / 44 to 64 inches (GP) (111 to 162 cm) |
| Height (steering wheel) | 61 inches (154 cm) |
| Length | 130 inches (tricycle) (330 cm) |
| Rear tread | 48 to 88 inches (121 to 223 cm) |
| Weight | 4076 lbs (1848 kg) |
| Wheelbase | 84.5 inches (tricycle) (214 cm) |
| Width | 79.625 inches (202 cm) |
| Front tire | 5.50-16 |
| Rear tire | 11-28 |
| Weight | 4076 lbs (1848 kg) |
| Wheelbase | 84.5 inches (tricycle) (214 cm) |
| Ag front | 5.50-16 |
| Ag rear | 11-28 / 10-28 |
311-B Serial Number Location
| Description | Serial number plate on the left side of the tractor's instrument panel. |
|---|
311-B Serial Numbers
| 1958 | 6095001 |
|---|---|
| 1959 | 6120001 |
| Description | FAQ: How to read a serial number table. |
Belt Pulley
| Diameter | 9.25 inches (23 cm) |
|---|---|
| RPM | 1290 |
| Speed | 3125 ft/min (952.50 meters/min) |
| Width | 6.375 inches (16 cm) |
J.I. Case 311-B attachments
| Description | front-end loader |
|---|
References
| Description | Operator's Instruction Manual 300B and 400B Series Wheel Tractors (9-471) published in 1958 / 300B-400B Tractors Operator's Manual (9-472) published in 1958 / J.I. Case presents published in 1957 |
|---|
Speeds
| Description | With 12-28 rear tires. |
|---|
Variants
| 300B | diesel utility |
|---|---|
| 301B | diesel row-crop |
| 302B | diesel high-crop |
| 310B | gasoline utility |
| 311B | gasoline row-crop |
| 312B | gasoline high-crop |
| 320B | industrial |