International Harvester

International Harvester 684

The International Harvester 684 is a utility tractor produced from 1977 to 1984 as part of the 84 Series. Built in Doncaster, England, it features a 3.9L 4-cylinder diesel engine producing 69 hp. It offers two transmission options: an 8-speed syncromesh and a 16-speed two-speed power shift with optional Torque Amplifier. The tractor supports two- or four-wheel drive, power steering, and optional ROPS canopy or cab. It has a fuel capacity of 20 gallons and a hydraulic system capacity of 9 gallons. The 684 is equipped with a rear Type II hitch with position and draft control and a rear lift capacity of 3600 lbs. The rear PTO is independent with a hydraulic wet disc clutch and operates at 540 rpm. Dimensions vary by configuration, with wheelbases ranging from 83.75 to 88 inches and weights from 5620 to 6765 pounds. The tractor is known for its versatility and reliability in utility farming tasks.

Power69 hp

Founded1977 - 1984

Model684

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Technical Specifications

Detailed specifications and technical data for International Harvester 684

Power

Plows	4
Engine	69 hp (51.5 kW)
PTO (tested)	62.52 hp (46.6 kW)
PTO (claimed)	62.5 hp (46.6 kW)
Drawbar (tested)	54.56 hp (40.7 kW)
Drawbar (claimed)	55.9 hp (41.7 kW)

Engine

Type	diesel
Model	International Harvester D-239
Power	69 hp (51.5 kW)
Cooling	liquid-cooled
Cylinders	4-cylinder
Rated RPM	2400
Air cleaner	dry
Bore/Stroke	3.875x5.06 inches (98 x 129 mm)
Displacement	239 ci (3.9 L)
Oil capacity	8.8 qts (8.3 L)
Starter volts	12
Coolant capacity	14.4 qts (13.6 L)

Height

ROPS	100 inches (254 cm)
4WD Steering wheel	63 inches (160 cm)
Utility Steering wheel	63 inches (160 cm)
Row-crop Steering wheel	63 inches (160 cm)
Low-profile Steering wheel	56.5 inches (143 cm)

Weight

Ballasted	9660 lbs (4381 kg)
4WD Shipping	6765 lbs (3068 kg)
Utility Shipping	5720 lbs (2594 kg)
Row-crop Shipping	5970 lbs (2707 kg)
Low-profile Shipping	5620 lbs (2549 kg)

Capacity

Fuel	20 gal (75.7 L)
Hydraulic system	9 gal (34.1 L)

Electrical

Ground	negative
Battery volts	12
Charging amps	45

Hydraulics

Type	open center
Valves	1 or 2
Capacity	9 gal (34.1 L)
Pump flow	13 gpm (49.2 lpm), 15.4 gpm (optional) (58.3 lpm)

Mechanical

ROPS	ROPS canopy or cab optional
Drive	Two- or four-wheel drive
Brakes	Independent hydraulic wet disc brakes
Steering	Power steering

Production

Type	Utility tractor
Series	84 Series
Built in	Doncaster, England
Years made	1977 - 1984
Original price	$21,100 in 1984

Transmission

Options	8-speed syncromesh, 16-speed two-speed power shift
Type (syncromesh)	syncromesh
Gears (syncromesh)	8 forward and 4 reverse
Notes (syncromesh)	Four synchronized gears in high, low, and reverse ranges.
Clutch (syncromesh)	dry disc
Type (Torque Amplifier)	two-speed power shift
Gears (Torque Amplifier)	16 forward and 8 reverse
Notes (Torque Amplifier)	The optional Torque Amplifier (TA) provides a clutchless on-the-move shift from direct drive (DD) to a lower TA speed.
Oil capacity (syncromesh)	36 qts (34.1 L)
Oil capacity (Torque Amplifier)	36 qts (34.1 L)

Tractor hitch

Control	position and draft control
Rear Type	II
Rear lift	3600 lbs (1632 kg)

Serial Numbers

1978	501
1979	1687
1980	3533
1981	6037
1982	8001
1983	8512
1984	9352

Dimensions & Tires

Weight	5620 to 6765 pounds
4WD Width	74 inches (187 cm)
Rear tire	16.9-30
4WD Length	147.2 inches (373 cm)
Front tire	7.50-16
4WD Wheelbase	85.2 inches (216 cm)
Utility Width	74 inches (187 cm)
Row-crop Width	75 inches (190 cm)
Utility Length	142 inches (360 cm)
Row-crop Length	139 inches (353 cm)
Low-profile Width	78.5 inches (199 cm)
Utility Wheelbase	88 inches (223 cm)
Low-profile Length	142 inches (360 cm)
Row-crop Wheelbase	84.5 inches (214 cm)
4WD Ground clearance	17.75 inches (45 cm)
Low-profile Wheelbase	83.75 inches (212 cm)
Utility Ground clearance	17.75 inches (45 cm)
Row-crop Ground clearance	17.75 inches (45 cm)
Low-profile Ground clearance	10.7 inches (27 cm)