Caterpillar

Caterpillar D4

The Caterpillar D4 is an agricultural crawler tractor produced from 1938 to 1959 by Caterpillar in Peoria, Illinois, USA. It features a Caterpillar D4400 5.1L 4-cylinder liquid-cooled diesel engine with an estimated 44.2 hp. The tractor has a 5-speed gear transmission with a dry disc clutch and manual clutch steering. It has an open operator station and runs on 13-inch wide tracks. The D4 was widely used in agriculture and is known for its durability and crawler drive system.

Power44 hp[B]

Founded1938 - 1959

ModelD4

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Technical Specifications

Detailed specifications and technical data for Caterpillar D4

Power

Note	Estimated engine power for comparison only.
Belt (tested)	39.82 hp (29.7 kW)
Drawbar (tested)	35.06 hp (26.1 kW)

Engine

Type	diesel
Model	Caterpillar D4400
Notes	The D4400 was used on the RD4/D4 tractors through the 5T series.
Torque	421 lb-ft (570.9 Nm)
Cooling	liquid-cooled
Cylinders	4-cylinder
Fuel tank	20 gal (75.7 L)
Rated RPM	1400
Torque RPM	1000
Air cleaner	oil bath
Bore/Stroke	4.25x5.50 inches (108 x 140 mm)
Displacement	312 ci (5.1 L)
Oil capacity	16 qts (15.1 L)
Coolant capacity	44 qts (41.6 L)
Compression ratio	17.3:1

Tracks

Width	13 inches (33 cm)

Dimensions

Gauge	44 inches (111 cm), 60 inches (152 cm)
Width	62 inches (44" gauge) (157 cm), 78 inches (60" gauge) (198 cm)
Length	120.7 inches (306 cm)
Weight	9970 lbs (44" gauge) (4522 kg), 10250 lbs (60" gauge) (4649 kg)
Wheelbase	61.125 inches (155 cm)
Height (hood)	60.625 inches (153 cm)
Ground clearance	11.125 inches (28 cm)
Clearance (drawbar)	14.25 inches (36 cm)