International Harvester BTD-20

The International Harvester BTD-20 is a tractor produced by International Harvester. It is equipped with a 742.6 ci 12.2 L engine. The listed engine power is Diesel (net): 135 hp / 100.7 kW. Transmission: 6 forward and reverse. Drive type: crawler. Operating weight: 30300 lbs 13744 kg.

Engine Power

Diesel (net): 135 hp / 100.7 kW

Drive & Traction

crawler

Fuel & Capacities

70.9 gal 268.4 L

Transmission

6 forward and reverse

Operating Weight

30300 lbs 13744 kg

Overview

	1959 - 1974 Agricultural Crawler tractor

Production
Manufacturer	International Harvester
Agricultural Crawler tractor
Built in Doncaster, England
Total built	3038

International Harvester BTD-20 Engine
Rolls-Royce 12.2L 6-cyl diesel
Fuel tank	70.9 gal 268.4 L
Engine details ...

International Harvester BTD-20 Transmission
6-speed gear
Transmission details ...

International Harvester BTD-20 Power
Engine (net)	135 hp 100.7 kW
Drawbar (claimed)	112.5 hp 83.9 kW

Mechanical
Drive	crawler
Final drives	bull gear
Open operator station

Dimensions & Tracks
Weight	30300 lbs 13744 kg
20-inch tracks
Full dimensions and tracks ...

Electrical
Charging system	generator

References

International 1917-1961 Vintage Tractor Special by Allen Condie*
The Roar of Dust and Diesel - A Story of International Harvester Doncaster by Mike Teanby
Technical Annual published in 1967, by Power Farming
BTD-20 (201 Series) DROTT 4-in-1 and Straight Bucket published by International Harvester
World Wide Farm Equipment Buyer's Guide published in 1968, by International Harvester*
Farm Crawlers published by International Harvester
BTD-20 Diesel Crawler Tractor published by International Harvester
*Publication contains known errors.

Engine

Engine Detail — 742.6 ci / 12.2 L Diesel

Manufacturer	Rolls-Royce C6N
Fuel Type	Diesel
Configuration	6-cylinder, liquid-cooled
Displacement	742.6 ci 12.2 L
Bore/Stroke	5.125x6.00 inches 130 x 152 mm
Power (net)	135 hp 100.7 kW
Rated RPM	1550
Torque	480 lb-ft 650.9 Nm
Torque RPM	1150
Starter	electric
Starter volts	24
Oil capacity	33.6 qts 31.8 L
Coolant capacity	43.2 qts 40.9 L

International Harvester BTD-20 Engine

Transmission

Transmission — 6 forward and reverse gear

Type	gear
Gears	6 forward and reverse
Clutch	406mm dry disc
Oil capacity	42.8 qts 40.5 L

Dimensions

International Harvester BTD-20 Tracks
Width	20 inches 50 cm
Length on ground	94 inches 238 cm
Area on ground	3760 in² 2.4 m²

Dimensions
Length	165.1 inches 419 cm
Width	94 inches 238 cm
Height	89.7 inches 227 cm
Operating weight	30300 lbs 13744 kg
Ground clearance	14 inches 35 cm
Gauge	74 inches 187 cm

Photos

International Harvester BTD-20

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester BTD-20 based on its 135 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm)	Heavy Duty	Heavy primary tillage; semi-mounted hitch recommended.
Rotary Cutter / MowerMowing & Clearing	10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼	Heavy Duty	Wide swath pasture and crop residue shredding.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙	Commercial / Field Scale	Wide commercial field leveling; requires hydraulic remotes.
Hay BalerHay & Forage	5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机	Heavy Duty	High density baling; requires minimum 85 PTO HP.

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 BTD-20.

Estimated Continuous Field Runtime: 10.1 hrs

Approximately 10.1 hours of continuous field operation at ~75% rated power on a full tank (70.9 gal / 268.4 L).

Estimated 75% Load Fuel Burn~7 gal/hr (26.6 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