International Harvester

International Harvester 523

The International Harvester 523 is a utility tractor produced from 1965 to 1972. Built in Neuss, Germany, it features a 2.9L 3-cylinder liquid-cooled diesel engine producing 52 hp (38.8 kW). It offers 8-speed and 12-speed partial power shift transmissions, with two- or four-wheel drive options. The tractor includes mechanical rear differential lock, manual steering, disc brakes, and an open operator station. Fuel capacity is 18.5 gallons (70.0 L) with a hydraulic system capacity of 4.3 gallons (16.3 L). The rear hitch is type II/I with a lift capacity of 3748 lbs (1700 kg). PTO options include independent rear PTO with 540 and 540/1000 rpm types. Dimensions include a wheelbase of 78.7 inches (199 cm), length of 119.8 inches (304 cm), and width of 63.8 inches (162 cm). Weight ranges from 5380 lbs (2440 kg) for 2WD to 6295 lbs (2855 kg) for 4WD. Tires vary with multiple front and rear sizes available. Electrical system uses a generator charging 10.8 amps with a 135 AH battery.

Power52 hp

Founded1965 - 1972

Model523

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Technical Specifications

Detailed specifications and technical data for International Harvester 523

Power

Engine power	52 hp (38.8 kW)

Engine

Type	diesel
Model	International Harvester D-179
Power	52 hp (38.8 kW)
Cooling	liquid-cooled
Starter	electric
Cylinders	3-cylinder
Rated RPM	2100
Air cleaner	oil bath
Bore/Stroke	3.875x5.0625 inches (98 x 129 mm)
Fuel system	direct injection
Displacement	179 ci (2.9 L)
Oil capacity	6.8 qts (6.4 L)
Starter power	4 hp (3.0 kW)
Starter volts	12
Coolant capacity	16.3 qts (15.4 L)

Capacity

Fuel	18.5 gal (70.0 L)
Hydraulic system	4.3 gal (16.3 L)

Electrical

Battery AH	135
Charging amps	10.8
Charging system	generator

Hydraulics

Capacity	4.3 gal (16.3 L)
Pump flow	7.5 gpm (28.4 lpm)

Mechanical

Drive	Two- or four-wheel drive
Brakes	Disc brakes
Steering	Manual steering
Operator station	Open operator station
Differential lock	mechanical rear

Production

Type	Utility tractor
Built in	Neuss, Germany
Years produced	1965 - 1972

Transmission

Clutch	279.4mm dry disc
Options	8-speed, 12-speed partial power shift
Description	Four gears (1-4) in two ranges (low/high) plus reverse range.
Agriomatic S	partial power shift
Oil capacity	35.1 qts (33.2 L)
Gears (8-speed)	8 forward and 4 reverse
Agriomatic S details	The Agriomatic S provides an additional four forward speeds selected by a right-hand power shift lever. Pushing the lever forward engages the Agriomatic range, while rearward uses the conventional range. The Agriomatic speeds are between high and low ranges, so this provides an undershift in high range and an overshift in low range. In reverse range it operates as a power shuttle.
Gears (Agriomatic S)	12 forward and 4 reverse

Tractor hitch

Rear Type	II/I
Rear lift capacity	3748 lbs (1700 kg)

Dimensions & Tires

Width	63.8 inches (162 cm)
Length	119.8 inches (304 cm)
Rear tire	11-32, 13-28, 14-28, 13-30, 14-30, 11-36, 12-36
Wheelbase	78.7 inches (199 cm)
2WD Weight	5380 lbs (2440 kg)
4WD Weight	6295 lbs (2855 kg)
Front tire	6.00-16, 7.50-16, 9-24 (4WD Ag front)
Height (exhaust)	86.2 inches (218 cm)
Clearance (drawbar)	12 inches (30 cm)
Clearance (front axle)	15 inches (38 cm)
Height (steering wheel)	59.8 inches (151 cm)