Oliver OC-4

Last Updated: July 2024

Overview

The Oliver OC-4 is a tractor that was manufactured by the Oliver Farm Equipment Company. It is powered by a Hercules 2.1L 3-cylinder engine, available in either diesel or gasoline variants. This tractor has a gear-drive transmission consisting of 4 forward gears and 1 reverse gear. The reported engine output is approximately 30.45 horsepower with a displacement of 130 cubic inches, and the engine operates at a rated RPM of 1700. The bore and stroke measurements are 3.50 inches and 4.50 inches, respectively. It's capable of a coolant capacity of 12 quarts. The tractor's operating weight ranges between 4720 to 5000 pounds, indicating a solid build appropriate for various agricultural tasks. Based on the independent test results from the University of Nebraska Tractor Test Laboratory, this tractor model was tested on June 5, 1958.

Key Specifications

Power Output: 30.45 (Based on available information, assumed average as there are two slightly different power outputs listed)

Transmission: Gear

Operating Weight: 4720 to 5000 (depending on the model variant)

Fuel Type: Diesel and Gasoline (two different models)

Image Gallery

Oliver OC-4 Tractor

Technical Specifications

Engine

Manufacturer: Hercules
Model: -
Cooling Type: -
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Diesel and Gasoline (two different models)
Induction Type: Natural aspirated
Cylinders: 3
Displacement (ci): 130
Bore (in): 3.5
Stroke (in): 4.5
Rated RPM: 1700
Power Output (hp): 30.45 (Based on available information, assumed average as there are two slightly different power outputs listed)

Transmission

Type: Gear
Forward Gears: 4
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 111
Width (in): 60
Height (in): -
Operating Weight (lb): 4720 to 5000 (depending on the model variant)

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
Coolant Capacity (qts): 12
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: -
Hitch Type: -
Hitch Category: Category 3
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric Starter (either 6 or 12 volts, as both are listed)
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: June 5, 1958

Maximum Power and Fuel Consumption

Maximum Power: [Data not provided in the preview]
Fuel Consumption at Maximum Power: [Data not provided in the preview]

Drawbar Performance

Power at Rated Engine Speed: [Data not provided in the preview]
Fuel Consumption at Rated Speed: [Data not provided in the preview]

Torque and Engine Performance

Maximum Torque: [Data not provided in the preview]
Torque Rise: [Data not provided in the preview]

Hydraulic Performance

Maximum Force Exerted: [Data not provided in the preview]
Pump Delivery Rate: [Data not provided in the preview]

Overall Efficiency

Fuel Efficiency at Standard PTO Speed: [Data not provided in the preview]
Fuel Consumption: [Data not provided in the preview]

Nebraska Tractor Test Lab. (1958). Test 656: Oliver OC-4. Lincoln, NE: University of Nebraska-Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/539