Allis Chalmers
Allis Chalmers S
The Allis Chalmers S is an agricultural crawler tractor produced from 1937 to 1942 by Allis Chalmers in Springfield, Illinois, USA. It features a crawler drive with an open operator station and was built in gasoline and spark-ignition diesel variants. The tractor is powered by an 11.1L 4-cylinder liquid-cooled vertical I-head engine available in both diesel and gasoline versions. It has a 5-speed gear transmission with 1 reverse gear and a dry disc clutch. The S model has a weight of 20,100 lbs and uses 18-inch wide tracks. It was designed for agricultural use and is known for its robust crawler design.
Power93 hp[P]
Founded1937 - 1942
ModelS
Technical Specifications
Detailed specifications and technical data for Allis Chalmers S
Power
| PTO (tested) | 84.3 hp (62.9 kW) |
|---|---|
| Belt (tested) | 74.82 hp (55.8 kW) |
| Belt (claimed) | 66 hp (49.2 kW) |
| Drawbar (tested) | 68.9 hp (51.4 kW) |
| Drawbar (claimed) | 48 hp (35.8 kW) |
Engine
| Fuel tank | 64 gal (242.2 L) |
|---|---|
| Rated RPM | 1050 |
| Air cleaner | oil bath |
| Bore/Stroke | 5.75x6.50 inches (146 x 165 mm) |
| Compression | 6.5:1 |
| Fuel system | mechanical injection |
| Displacement | 675.1 ci (11.1 L) |
| Diesel engine | Allis Chalmers 4-cylinder liquid-cooled vertical I-head, oil engine, burned diesel with fuel injection and spark ignition, used on the SO model |
| Starter volts | 6 |
| Engine options | Allis Chalmers 11.1L 4-cyl diesel, Allis Chalmers 11.1L 4-cyl gasoline |
| Gasoline engine | Allis Chalmers 4-cylinder liquid-cooled vertical I-head |
| Coolant capacity | 50 qts (47.3 L) |
| Gasoline rated RPM | 1050 |
| Gasoline compression | 5:1 |
| Gasoline oil capacity | 20 qts (18.9 L) |
| Gasoline starter volts | 6 |
Tracks
| Width | 18 inches (45 cm) |
|---|---|
| Area on ground | 2775 in² (1.8 m²) |
| Ground pressure | 6.74 psi (0.5 bar) |
| Length on ground | 77.1 inches (195 cm) |
Variants
| S | gasoline |
|---|---|
| SO | spark-ignition diesel |
| WS | wide |
Dimensions
| Gauge | 62 inches (157 cm) |
|---|---|
| Width | 97 inches (246 cm) |
| Height | 74 inches (187 cm) |
| Length | 146 inches (370 cm) |
| Weight | 20100 lbs (9117 kg) |
Mechanical
| Drive | crawler |
|---|---|
| Operator station | Open operator station. |
Production
| Type | Agricultural Crawler tractor |
|---|---|
| Built in | Springfield, Illinois, USA |
| Total built | 1,225 |
| Manufacturer | Allis Chalmers |
| Years produced | 1937 - 1942 |
Transmission
| Type | gear |
|---|---|
| Gears | 5 forward and 1 reverse |
| Clutch | dry disc |
| Oil capacity | 23 qts (21.8 L) |
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