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Oliver 550

Oliver 550 tractor
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The Oliver 550 is a utility tractor produced from 1958 to 1975 by Oliver in Charles City, Iowa, USA. It was built with gasoline and diesel 2.5L 4-cylinder Waukesha-Oliver engines. The tractor features a 6-speed gear transmission with dry disc clutch, power assist steering, and differential mechanical dry disc brakes. It has an open operator station and an independent rear PTO with 540/1000 RPM options. The 550 has a wheelbase of 72.9 inches, weighs between 3070 and 3730 pounds, and uses 6.00-16 front tires and 12-26 rear tires. Fuel capacity is 13 gallons and hydraulic system capacity is 2.5 gallons with a 5.25 gpm pump flow. Electrical system uses positive ground with 2 batteries for diesel and 1 for gas models. The Oliver 550 was priced originally at $4,400 in 1975 and had a total production of over 20,000 units.
Oliver 550Oliver tractorutility tractor2.5L engineWaukesha-Oliver6-speed transmissiontractor specificationsfarm tractor
Power46 hp[P]
Founded1958 - 1975
Model550

Technical Specifications

Detailed specifications and technical data for Oliver 550

Power

PTO (tested):41.39 hp (30.9 kW)
PTO (claimed):41.39 hp (30.9 kW)
Drawbar (tested):35.36 hp (26.4 kW)
Drawbar (claimed):35.3 hp (26.3 kW)

Engine

Diesel engine:Waukesha-Oliver, 4-cylinder, liquid-cooled, displacement 155 ci (2.5 L), bore/stroke 3.625x3.75 inches (92 x 95 mm), air cleaner oil bath, compression 16:1, rated RPM 2000, starter volts 12
Engine options:Waukesha-Oliver 2.5L 4-cyl gasoline, Waukesha-Oliver 2.5L 4-cyl diesel
Gasoline engine:Waukesha-Oliver, 4-cylinder, liquid-cooled, displacement 155 ci (2.5 L), bore/stroke 3.62x3.75 inches (92 x 95 mm), air cleaner oil bath, compression 7.75:1, rated RPM 2000, starter volts 12, oil capacity 4 qts (3.8 L)

Weight

Operating:3730 lbs (1691 kg)
Gas Shipping:3070 lbs (1392 kg)
Diesel Shipping:3170 lbs (1437 kg)

Capacity

Fuel:13 gal (49.2 L)
Hydraulic system:2.5 gal (9.5 L)

Electrical

Ground:positive
Batteries:2 (diesel), 1 (gas)
Battery volts:6 (diesel), 12 (gas)

Hydraulics

Type:open center
Capacity:2.5 gal (9.5 L)
Pump flow:5.25 gpm (19.9 lpm)

Mechanical

Drive:Two-wheel drive
Brakes:Differential mechanical dry disc brakes
Steering:power assist
Operator station:Open operator station

Production

Note:During the first year of production the Oliver 550 had the same 2.4L engine as the Super 55.
Type:Utility tractor
Built in:Charles City, Iowa, USA
Total built:20,368 (Oliver), 3,915 (Cockshutt)
Original price:$4,400 in 1975
Years produced:1958 - 1975

Transmission

Type:gear
Gears:6 forward and 2 reverse
Clutch:dry disc
Oil capacity:20 qts (18.9 L)

Tractor hitch

Rear Type:I

Dimensions & Tires

Length:119.9 inches (304 cm)
Weight:3070 to 3730 pounds
Rear tire:12-26
Wheelbase:72.9 inches (185 cm)
Front tire:6.00-16
Rear tread:48 to 76 inches (121 to 193 cm)
Front tread:48 to 76 inches (121 to 193 cm)
Height (hood):50.1 inches (127 cm)
Height (steering wheel):58 inches (147 cm)

Power Take-off (PTO)

Rear PTO:independent
Rear PTO Type:540/1000

Related Models

Oliver 440

Model:440

Oliver 660

Model:660

Oliver Super 55

Model:Super 55