Tractorpedia.com

Allis Chalmers S

Allis Chalmers S tractor
View Images
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.
Allis Chalmers Stractorcrawler tractoragricultural tractorengine specstransmissionpowerdimensionsAllis Chalmers tractors
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)

Related Models

Allis Chalmers SO

Model:SO

Allis Chalmers WS

Model:WS