International Harvester 634

The International Harvester 634 is a tractor produced by International Harvester. It is equipped with a 281 ci 4.6 L engine. The rated power output is 66 hp 49.2 kW. Transmission: 8 forward and 2 reverse. Drive type: 4x2 2WD. Operating weight: 6546 to 9574 pounds.

Overview

	1968 - 1972	1968 - 1972

Production
Manufacturer	International Harvester
Built in Doncaster, England
Total built	3,848

International Harvester 634 Engine
International Harvester 4.6L 4-cyl diesel
Fuel tank	20.4 gal 77.2 L
Engine details ...

International Harvester 634 Transmission
8-speed
Transmission details ...

International Harvester 634 Power
Engine	66 hp 49.2 kW
PTO (claimed)	59.3 hp 44.2 kW

Mechanical
Drive	4x2 2WD
	4x4 4WD *Four-wheel drive conversion by County
2WD Steering	manual
4WD Steering	power
Mechanical disc brakes
Open operator station. Cab optional.

Hydraulics
Pressure	2500 psi 172.4 bar
Pump flow	10.4 gpm 39.4 lpm
Steering flow	4.8 gpm 18.2 lpm
Steering press.	1500 psi 103.4 bar

Tractor hitch
Rear Type	II
Control	position and draft control
Rear lift	3360 lbs 1524 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540 (1.375)
Engine RPM	540@1458

Dimensions & Tires
2WD Wheelbase	86.8 inches 220 cm
4WD Wheelbase	86.8 inches 220 cm
AWD Wheelbase	75 inches 190 cm
Weight	6546 to 9574 pounds
Front tire	7.50-16
2WD Rear tire	11-38
Full dimensions and tires ...

Electrical
Charging system	generator
Battery volts	12
Battery AH	95

References
The Roar of Dust and Diesel - A Story of International Harvester Doncaster by Mike Teanby
634 Diesel Tractors published by International Harvester

Engine

Engine Detail — 281 ci / 4.6 L Diesel

Manufacturer	International Harvester BD-281
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	281 ci 4.6 L
Bore/Stroke	4.125x5.25 inches 105 x 133 mm
Power	66 hp 49.2 kW
Rated RPM	1600
Torque	225 lb-ft 305.1 Nm
Torque RPM	1000
Starter volts	12

Transmission

Transmission — 8 forward and 2 reverse

Gears	8 forward and 2 reverse
Clutch	330mm dry disc

Dimensions

International Harvester 634 Tires
2WD Standard tires (ag)	Front: 7.50-16. Rear: 11-38
4WD Standard tires (ag)	Front: 10-24. Rear: 12-38
AWD Standard tires (ag)	Front: 14-30. Rear: 14-30

Dimensions
2WD Wheelbase	86.8 inches 220 cm
4WD Wheelbase	86.8 inches 220 cm
AWD Wheelbase	75 inches 190 cm
2WD Length	138 inches 350 cm
4WD Length	139 inches 353 cm
AWD Length	150 inches 381 cm
Width	65.5 inches 166 cm
Height (cab)	96 inches 243 cm
2WD Front tread	52 to 61 inches 132 to 154 cm
4WD Front tread	53 to 66 inches 134 to 167 cm
AWD Front tread	60 to 80 inches 152 to 203 cm
2WD Rear tread	56 to 72 inches 142 to 182 cm
4WD Rear tread	56 to 72 inches 142 to 182 cm
AWD Rear tread	60 to 80 inches 152 to 203 cm

International Harvester 634 Weight
2WD Operating	6546 lbs 2969 kg
4WD Operating	7694 lbs 3489 kg
AWD Operating	9574 lbs 4342 kg

Photos

International Harvester 634