Allis Chalmers C

Name: Allis Chalmers C
Brand: Allis Chalmers

Power

21 hp[P] hp

Production

1940-1949

Engine

4-cylinder 8-valve

Transmission

Non-synchronized gear

Weight

2500 lbs [1134 kg]

Drive

2WD

Under 25 HP 1940s

From the same series:

Introduction

Allis Chalmers C: Technical Overview

The Allis Chalmers C is a row-crop tractor produced between 1940 and 1949 at the manufacturer's facility in West Allis, Wisconsin. As a staple of mid-century agricultural mechanization, this two-wheel-drive machine was designed for versatility and operational simplicity, with 84,020 units manufactured during its production run.

Engine and Performance

The tractor is powered by a 125.2 cubic inch (2.1 L) liquid-cooled, 4-cylinder, 8-valve engine. It operates at a rated speed of 1500 RPM, delivering 21 horsepower. The engine utilizes an oil bath air cleaner to maintain intake purity and features a compression ratio of 5.75:1. Maintenance requirements include specific valve clearances of 0.010 inches for both intake and exhaust, and a spark plug gap of 0.035 inches.

Transmission and Drivetrain

Power is transferred through a non-synchronized gear transmission offering three forward speeds and one reverse speed. The transmission system requires SAE20W oil, with a capacity of 6 quarts (5.7 L), or 7 quarts (6.6 L) when equipped with a Power Take-Off (PTO). The rear PTO is a transmission-driven unit operating at 560 RPM, allowing for the connection of various trailing implements.

Chassis and Dimensions

The Allis Chalmers C features a 77-inch wheelbase with an overall length of 114 inches. The machine weighs 2,500 lbs, providing a stable footprint for field work. The front tread is fixed at 82 inches, while the rear tread is adjustable between 52 and 80 inches to accommodate various row widths. Steering is manual, assisted by mechanical drum brakes for stopping control.

Electrical System

The tractor is equipped with a 6-volt electrical system featuring a 95 Ah battery and a generator-based charging system that provides 12 amperes of current. The system uses a positive ground configuration, typical of tractors from this era.

Conclusion

"With its robust design, mechanical simplicity, and adjustable tread widths, the Allis Chalmers C was engineered as a reliable row-crop tractor for mid-20th-century farming operations. Its combination of a 21-horsepower engine and a straightforward transmission made it a functional solution for a wide range of agricultural tasks."

Introduction

Production Information of Allis Chalmers, C

The production information of the tractor (C) includes details about its manufacturing.

Original price was $1,200 in 1949

Row-Crop tractor

Built in West Allis, Wisconsin, USA


Manufacturer	Allis Chalmers
Total built	84,020

Dimension and Tires Information of Allis Chalmers, C

This section sums up the dimension and tires information of the tractor.


Rear tread	52 to 80 inches [132 to 203 cm]
Wheelbase	77 inches [195 cm]
Weight	2500 lbs [1134 kg]
Height	62.75 inches [159 cm]
Length	114 inches [289 cm]
Front tread	82 inches [208 cm]
Width	68.5 inches [173 cm]


Ag front	4.00-15
Ag rear	10-24
Ag rear	9-24
Ag front	6-12

Engine Specifications of Allis Chalmers, C

Get the specifications for the engine and if different options are available.

Liquid-cooled

4-cylinder 8-valve


Intake valve clearance	0.010 inches [0.254 mm]
Point gap	0.020 inches [0.508 mm]
Compression	5.75:1
Exhaust valve clearance	0.010 inches [0.254 mm]
Firing order	1-2-4-3
Coolant capacity	8 qts [7.6 L]
Rated RPM	1500
Displacement	125.2 ci [2.1 L]
Air cleaner	Oil bath
Oil capacity	4 qts [3.8 L]
Bore/Stroke	3.375x3.50 inches [86 x 89 mm]
Sparkplug gap	0.035 inches [0.889 mm]
Intake valve clearance	0.010 inches (hot) [0.254 mm]
Exhaust valve clearance	0.010 inches (hot) [0.254 mm]
	AC 45
Sparkplug	Autolite AN 7

Transmission Information of Allis Chalmers, CY

Discover all variants of transmission available for this tractor model.

Transmission variants 1


Type	Non-synchronized gear
Oil type	SAE20W
	7 qts (with PTO) [6.6 L]
Gears	3 forward and 1 reverse
	SAE20W
Oil capacity	6 qts [5.7 L]

Mechanical Specs of Allis Chalmers, CY

This section summarizes all mechanical information such as the brake system and other specifications.

Two-wheel drive

Open operator station.

Manual steering

Mechanical drum brakes

Power Information of Allis Chalmers, CY

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Transmission
Rear PTO Type	560

Electrical System of Allis Chalmers, C

Battery voltage, charging system and ground.


Ground	Positive
Battery AH	95
Battery volts	6
Charging system	Generator
Charging amps	12

Frequently asked questions

How much horsepower does the Allis Chalmers C have?

The Allis Chalmers C delivers 21 hp[P] HP.

What years was the Allis Chalmers C produced?

The Allis Chalmers C was produced in 1940-1949.

What engine does the Allis Chalmers C have?

The Allis Chalmers C is powered by a 4-cylinder 8-valve engine.

What transmission does the Allis Chalmers C use?

The Allis Chalmers C uses a Non-synchronized gear transmission.

How much does the Allis Chalmers C weigh?

The Allis Chalmers C weighs 2500 lbs [1134 kg].

Is the Allis Chalmers C 4WD?

The Allis Chalmers C is available in 2WD.

More Allis Chalmers models

10-1820 HP · 1914 - 1923 L22 HP · 1921 - 1927 WC23 HP · 1933 - 1948 501518 HP · 1982 - 1985 RC18 HP · 1938 - 1941 WF24 HP · 1938 - 1951 502025 HP · 1977 - 1985 B17 HP · 1938 - 1957

View all 94 Allis Chalmers models →

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