Caterpillar D4

Name: Caterpillar D4
Brand: Caterpillar

Power

44 hp[B] hp

Production

1938-1959

Engine

Diesel, 4-cylinder

Transmission

Gear

40–60 HP 1930s 1940s 1950s

From the same series:

Introduction

Caterpillar D4 Agricultural Crawler Tractor

The Caterpillar D4 is an agricultural crawler tractor produced between 1938 and 1959. Developed as a successor to the RD4 series, this machine was manufactured in Peoria, Illinois, and established a standard for tracked vehicles in heavy-duty agricultural applications during the mid-20th century.

Engine and Performance

The tractor is powered by the Caterpillar D4400, a 4-cylinder, liquid-cooled diesel engine with a displacement of 312 cubic inches (5.1 liters). It operates at a rated speed of 1400 RPM, delivering 44 horsepower and a peak torque of 421 lb-ft at 1000 RPM. The induction system utilizes an oil bath air cleaner, and the engine includes a 44-quart coolant capacity and a 16-quart oil capacity.

Transmission and Steering

Power is delivered through a gear-type transmission offering 5 forward gears and 1 reverse gear, coupled with a dry disc clutch. The steering system relies on manual clutches, which allow the operator to control the tracks independently. The transmission housing requires 20 quarts of oil for lubrication.

Chassis and Dimensions

The D4 features a crawler drive system equipped with 13-inch wide tracks designed to maximize surface contact and traction on uneven or soft terrain. The tractor has a wheelbase of 61.125 inches and an operating weight ranging between 9,970 and 10,250 pounds. The operator environment consists of an open station design.

Conclusion

"With its robust diesel architecture and track-driven propulsion, the Caterpillar D4 was engineered for demanding field tasks requiring significant drawbar pull and stability. Its mechanical simplicity and reliable performance have made it a notable reference in the history of agricultural crawler tractors."

Introduction

Production Information of Caterpillar, D4

The production information of the tractor (D4) includes details about its manufacturing.

Agricultural Crawler tractor

Built in Peoria, Illinois, USA


Manufacturer	Caterpillar

Dimension and Tires Information of Caterpillar, D4

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

No data available

Engine Specifications of Caterpillar, D4

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

Caterpillar D4400

Liquid-cooled

4-cylinder

Diesel

The D4400 was used on the RD4/D4 tractors through the 5T series.


Air cleaner	Oil bath
Torque	421 lb-ft [570.9 Nm]
Displacement	312 ci [5.1 L]
Bore/Stroke	4.25x5.50 inches [108 x 140 mm]
Rated RPM	1400
Compression	17.3:1
Coolant capacity	44 qts [41.6 L]
Oil capacity	16 qts [15.1 L]
Torque RPM	1000

Transmission Information of Caterpillar, D4Y

Discover all variants of transmission available for this tractor model.

Transmission variants 1


Type	Gear
Oil capacity	20 qts [18.9 L]
Gears	5 forward and 1 reverse
Clutch	Dry disc

Mechanical Specs of Caterpillar, D4Y

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

Open operator station.


Drive	Crawler
Steering	Manual clutches

Power Information of Caterpillar, D4Y

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

Https://www.tractordata.com/farm-tractors/002/9/8/2982-caterpillar-d4-tests.html

Frequently asked questions

How much horsepower does the Caterpillar D4 have?

The Caterpillar D4 delivers 44 hp[B] HP.

What years was the Caterpillar D4 produced?

The Caterpillar D4 was produced in 1938-1959.

What engine does the Caterpillar D4 have?

The Caterpillar D4 is powered by a Diesel, 4-cylinder engine.

What transmission does the Caterpillar D4 use?

The Caterpillar D4 uses a Gear transmission.

More Caterpillar models

5-Ton44 HP · 1925 - 1926 RD444 HP · 1935 - 1940 R346 HP · 1934 - 1935 Twenty-Eight41 HP · 1933 - 1935 R440 HP · 1938 - 1944 Thirty40 HP · 1925 - 1938 Thirty-Five48 HP · 1932 - 1934 Diesel Thirty-Five50 HP · 1933 - 1934

View all 49 Caterpillar models →

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