International Harvester D-320

The International Harvester D-320 is a tractor produced by International Harvester. It is equipped with a 99.5 ci 1.6 L engine. The listed engine power is Diesel (listed): 20 hp / 14.9 kW. Transmission: 6 forward and 1 reverse. Operating weight: 2880 lbs 1306 kg.

Engine Power

Diesel (listed): 20 hp / 14.9 kW

Fuel & Capacities

7.1 gal 26.9 L

Transmission

6 forward and 1 reverse

Operating Weight

2880 lbs 1306 kg

Overview

	1956 - 1962

Production
Manufacturer	International Harvester
Built in Neuss, Germany
Total built	13,298

International Harvester D-320 Engine
International Harvester 1.6L 3-cyl diesel
Fuel tank	7.1 gal 26.9 L
Engine details ...

International Harvester D-320 Transmission
6-speed gear
Transmission details ...

International Harvester D-320 Power
Engine	20 hp 14.9 kW

Mechanical
Two-wheel drive
Manual steering
Open operator station.

Tractor hitch
Rear Type	I

Power Take-off (PTO)
Rear PTO Type	540 (1.375)

Dimensions & Tires
Weight	2880 lbs 1306 kg
Front tire	4.50x16
Rear tire	8x32
Full dimensions and tires ...

Belt Pulley
Diameter	9.5 inches 24 cm
Width	6.375 inches 16 cm
RPM	1325

References

D-320 Farmall Diesel Tractor published by International Harvester
Farmall D-320 published by International Harvester

Engine

Engine Detail — 99.5 ci / 1.6 L Diesel

Manufacturer	International Harvester DD-99
Fuel Type	Diesel
Configuration	3-cylinder, liquid-cooled
Displacement	99.5 ci 1.6 L
Bore/Stroke	3.25x4.00 inches 83 x 102 mm
Power	20 hp 14.9 kW
Air cleaner	oil bath
Compression	19:1
Rated RPM	1750
Starter volts	12

Transmission

Transmission — 6 forward and 1 reverse gear

Type	gear
Gears	6 forward and 1 reverse
With 8x32 rear tires.

Dimensions

International Harvester D-320 Tires
Ag front	4.50x16
Ag rear	8x32
Ag front	5.00x16
	4.00x19
Ag rear	10x28
	8x36

Dimensions
Length	108.25 inches 274 cm
Width	64.5 inches 163 cm
Height	61 inches 154 cm
Weight	2880 lbs 1306 kg
Ground clearance	15.375 inches 39 cm
Front tread	49.25 to 80.75 inches 125 to 205 cm
Rear tread	49.25 to 74.75 inches 125 to 189 cm

Photos

McCormick-International D-320, left side.

McCormick-International D-320, right side.

McCormick-International D-320 with sickle mower.

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester D-320 based on its 20 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing	4 ft (48 in)1.2 m	Light Duty	Pasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep	42 to 48 in105 - 120 cm	Light Duty	Covers compact tractor tire width.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester D-320.

Estimated Continuous Field Runtime: 6.8 hrs

Approximately 6.8 hours of continuous field operation at ~75% rated power on a full tank (7.1 gal / 26.9 L).

Estimated 75% Load Fuel Burn~1 gal/hr (3.9 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours