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Tractor · 1938Unverified

Caterpillar D4

Name: Caterpillar D4
Brand: Caterpillar

Caterpillar D4 — Model year 1938-19471947-1959 · 35 hp. Reference specifications; pending source verification.

The Caterpillar D4 is a tractor rated at approximately 35 hp, positioning it at the lower end of its class. It was produced from 1938 to 1959, featuring a 4-cylinder diesel liquid-cooled engine and a tracked undercarriage with a 5-speed gearbox. The operating weight of the D4 ranges from 9970 to 10250 pounds, and it is suitable for operations covering up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

35 hp

Max power

26.1 kW

Weight

9970 to 10250 pounds

Catalogue coverage

Variants represented

Richest spec table

68 rows

Recorded power

35 hp

Recorded weight

4522 kg

Transmissions

5-speed gear

Production years

1938-1959

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerCaterpillarReference

Agricultural Crawler tractorReference

Built in Peoria, Illinois, USAReference

DrivecrawlerReference

Steeringmanual clutchesReference

Open operator station.Reference

Engine

Caterpillar 5.1L 4-cyl dieselReference

Fuel tank75.7 LReference

Drawbar (tested)26.1 kWReference

Belt (tested)29.7 kWReference

Caterpillar D4400Reference

dieselReference

4-cylinderReference

liquid-cooledReference

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

Displacement5.1 LReference

Bore/Stroke108 x 140 mmReference

Air cleaneroil bathReference

Compression17.3:1Reference

Rated RPM1400Reference

Torque570.9 NmReference

Torque RPM1000Reference

Oil capacity15.1 LReference

Coolant capacity41.6 LReference

Belt power (max)29.7 kWReference

Max power26.1 kWReference

Transmission

5-speed gearReference

TypegearReference

Gears5 forward and 1 reverseReference

Clutchdry discReference

Oil capacity18.9 LReference

Dimensions

Wheelbase155 cmReference

Weight9970 to 10250 poundsReference

13-inch tracksReference

Length306 cmReference

Width157 cmReference

Width198 cmReference

Height (hood)153 cmReference

Weight4522 kgReference

Weight4649 kgReference

Ground clearance28 cmReference

Clearance (drawbar)36 cmReference

Gauge111 cmReference

Gauge152 cmReference

D4 Serial Numbers

Location:Serial number plate on the rear of the tractor, upper-left of the transmission case.Reference

19364G1Reference

19374G3663Reference

19384G8858Reference

19394G9912Reference

19397J1Reference

19407J1758Reference

19417J4119Reference

19427J7544Reference

19432T1Reference

19442T3306Reference

19452T8224Reference

19455T1Reference

19465T3524Reference

19475T6780Reference

FAQ: How to read a serial number table.Reference

Links

Caterpillar D-4: A story on the use of a D-4 by VanNatta ForestryReference

Caterpillar D4 Tracks

Width33 cmReference

Test results

Diesel 5-speed crawlerOctober 14 - 28, 1936Link: Nebraska Tractor Test 273 fileReference

Belt fuel use (max)11.0 l/hourReference

Drawbar performanceReference

Gear 2 used for power test.Reference

Max pull3561 kgReference

Gear 1 used for pull test.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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