International Harvester 434
The International Harvester 434 is a tractor produced by International Harvester. It is equipped with a 154 ci 2.5 L engine. The listed engine power is Diesel (listed): 43 hp / 32.1 kW. Transmission: 8 forward and 2 reverse. Operating weight: 4630 lbs 2100 kg.
Engine Power
Diesel (listed): 43 hp / 32.1 kW
Fuel & Capacities
12.7 gal
48.1 L
Transmission
8 forward and 2 reverse
Operating Weight
4630 lbs
2100 kg
Overview
 | 1966 - 1972
Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | International Harvester |
Utility tractor | |
Built in Geelong, Australia | |
International Harvester 434 Engine | |
|---|---|
International Harvester 2.5L 4-cyl diesel | |
Fuel tank | 12.7 gal
48.1 L |
Engine details ...  | |
International Harvester 434 Transmission | |
|---|---|
8-speed gear | |
Transmission details ...  |
International Harvester 434 Power | |
|---|---|
Engine | 43 hp
32.1 kW |
Drawbar (claimed) | 35 hp
26.1 kW |
Belt (claimed) | 36.6 hp
27.3 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Open operator station. |
Hydraulics | |
|---|---|
Pump flow | 7.0 gpm
26.5 lpm |
Tractor hitch | |
|---|---|
Rear lift | 2579 lbs
1169 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 |
Dimensions & Tires | |
|---|---|
Wheelbase | 76.38 inches
194 cm |
Weight | 4630 lbs
2100 kg |
Front tire | 7.50-16 |
Rear tire | 12.4-32 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | positive |
References | |
|---|---|
 | |
International Harvester Tractors & Equipment in Australia & New Zealand by Graeme Quick |
Engine
Engine Detail — 154 ci / 2.5 L Diesel
Manufacturer | International Harvester |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 154 ci
2.5 L |
Bore/Stroke | 3.50x4.00 inches
89 x 102 mm |
Power | 43 hp
32.1 kW |
Rated RPM | 2000 |
Torque | 115.1 lb-ft
156.1 Nm |
Torque RPM | 1300 |
Starter volts | 12 |
Oil capacity | 6 qts
5.7 L |
Transmission
Transmission — 8 forward and 2 reverse gear
Type | gear |
Gears | 8 forward and 2 reverse |
Dimensions
International Harvester 434 Tires | |
|---|---|
Ag front | 7.50-16 |
Ag rear | 12.4-32 |
Dimensions | |
|---|---|
Wheelbase | 76.38 inches
194 cm |
Length | 118.11 inches
299 cm |
Height | 87.40 inches
221 cm |
Weight | 4630 lbs
2100 kg |
Photos
International 434 used a boat launcher in South Australia.
Recommended Implements & Sizing Guide
Engineering recommendations for International Harvester 434 based on its 43 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
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 434.
Estimated Continuous Field Runtime: 5.7 hrs
Approximately 5.7 hours of continuous field operation at ~75% rated power on a full tank (12.7 gal / 48.1 L).
Estimated 75% Load Fuel Burn~2.2 gal/hr (8.5 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
International Harvester 434 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for International Harvester 434.
Converted Equivalents:
Horsepower (HP)43 hp
Kilowatts (kW)32.1 kW
Metric Horsepower (PS / CV)43.6 PS
Direct Competitor Comparison
Compare International Harvester 434 against same-era industry alternatives in the same horsepower class.
Current Model
International Harvester
International Harvester 434
Engine Power:Diesel (listed): 43 hp / 32.1 kW
★ Baseline Reference
Fox River Tractor CompanyMarket Competitor
Fox River Tractor Company 18-35
Engine Power:38.9
Production Years:1920 - 1920
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