International Harvester TD-18A

The International Harvester TD-18A is a tractor produced by International Harvester. It is equipped with a 691.1 ci 11.3 L engine. Transmission: 6 forward and 2 reverse. Drive type: crawler. Operating weight: 22830 to 23630 pounds.

Drive & Traction

crawler

Fuel & Capacities

60 gal 227.1 L

Transmission

6 forward and 2 reverse

Operating Weight

22830 to 23630 pounds

Overview

	1949 - 1958 Model year 1949-19551955-19561956-1958 Agricultural Crawler tractor

Production
Manufacturer	International Harvester
Agricultural Crawler tractor
Built in Melrose Park, Illinois, USA
Total built	22,016

International Harvester TD-18A Engine
International Harvester 11.3L 6-cyl diesel
Fuel tank	60 gal 227.1 L
Aux. fuel	1.33 gal 5.0 L
Engine details ...

International Harvester TD-18A Transmission
6-speed gear
Transmission details ...

International Harvester TD-18A Power
Drawbar (claimed)	87 hp 64.9 kW
Belt (claimed)	101 hp 75.3 kW
Drawbar (tested)	85.61 hp 63.8 kW
Belt (tested)	97.83 hp 73.0 kW
Performance test details ...

Mechanical
Drive	crawler
Steering	mechanical steering clutches
Mechanical contracting band brakes
Open operator station.

Dimensions & Tracks
Weight	22830 to 23630 pounds
Tracks
Full dimensions and tracks ...

References

Crawler Tractors for Agriculture - Confidential Sales Manual published in 1951, by International Harvester

Engine

Engine Detail — 691.1 ci / 11.3 L Diesel

Manufacturer	International Harvester D-691
Fuel Type	Diesel
Configuration	6-cylinder, liquid-cooled vertical I-head
Displacement	691.1 ci 11.3 L
Bore/Stroke	4.75x6.50 inches 121 x 165 mm
Air cleaner	oil bath
Compression	15.5:1
Rated RPM	1350
Starter	gasoline-start
Starter volts	12
Oil capacity	26 qts 24.6 L
Coolant capacity	104 qts 98.4 L

Transmission

Transmission — 6 forward and 2 reverse gear

Type	gear
Gears	6 forward and 2 reverse

Dimensions

International Harvester TD-18A Tracks

Dimensions
Length	166 inches 421 cm
Width	95 inches 241 cm
Height	106 inches 269 cm
Shipping weight	22830 lbs (narrow gauge) 10355 kg
	23630 lbs (wide gauge) 10718 kg

Tests

Nebraska Tractor Test 446
Diesel 6-speed crawler June 27 - July 18, 1950 Link: Nebraska Tractor Test 446 file
Belt power (max)	97.83 hp 73.0 kW
Belt fuel use (max)	6.7 gal/hour 25.4 l/hour
Drawbar performance
Max power	85.61 hp 63.8 kW
Gear 2 used for power test.
Max pull	20,234 lbs 9178 kg
Gear 1 used for pull test.

Photos

International Harvester TD-18A

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester TD-18A.

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