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Super 99

Oliver Super 99

Last Updated: July 2024

Overview

The Oliver Super 99 is a tractor model manufactured by Oliver, powered by a 3-cylinder General Motors 3.5L diesel engine with a displacement of 213 cubic inches, a bore of 4.25 inches, and a stroke of 5.00 inches. The engine operates at a rated RPM of 1675. The transmission is of the gear type with 6 forward gears and 2 reverse gears. Based on the independent test results, the tractor's maximum belt horsepower is 78.74 HP at 1675 rpm, with a rated load belt horsepower of 71.55 HP at 1675 rpm. The maximum drawbar horsepower is 69.66 HP in 2nd gear with a drawbar pull of 8941 lbs at 2.92 mph and 10.79% slip. The maximum torque at the dynamometer is 504.2 lb-ft at 1400 rpm. The tractor's operating weight is listed as 7600 lbs, but the test results provide various weight configurations up to 15,055 lbs. Tire configurations include 7.50-18 on the front and options between 18-26 or 15-34 on the rear, with additional details on tire pressures and types available in the test results.

Key Specifications

Transmission: Gear

Operating Weight: 7600

Fuel Type: Diesel

Technical Specifications

Engine

Manufacturer: General Motors
Model: -
Cooling Type: -
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Diesel
Induction Type: -
Cylinders: 3
Displacement (ci): 213
Bore (in): 4.25
Stroke (in): 5.00
Rated RPM: 1675
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 6
Reverse Gears: 2
Total Gears: -

Dimensions

Length (in): -
Width (in): -
Height (in): -
Operating Weight (lb): 7600

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): -
Front Tire Diameter (in): 18
Front Tire Width (in): 7.5
Rear Tire Diameter (in): 26; 34
Rear Tire Width (in): 18; 15
Front/Rear Rim Diameter (in): -
Tire Type: Ag
Manufacture - End Year: -
Hitch Type: -
Hitch Category: Category 3
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric Starter
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: August 22 to August 27, 1955

Maximum Power and Fuel Consumption

Maximum Belt Horsepower: 78.74 HP at 1675 rpm
Fuel Consumption at Maximum Power: 5.928 Gal/hr with a fuel efficiency of 0.529 lb/hp.hr
Rated Load Belt Horsepower: 71.55 HP at 1675 rpm with a fuel efficiency of 0.510 lb/hp.hr

Drawbar Performance

Rated Drawbar Horsepower: 58.69 HP with a drawbar pull of 5299 lbs and a speed of 4.15 mph at 1675 rpm with 6.10% slip on drive wheels
Fuel Consumption at Rated Load: 4.740 Gal/hr with a fuel efficiency of 0.567 lb/hp.hr
Maximum Drawbar Horsepower (2nd Gear): 69.66 HP with a drawbar pull of 8941 lbs and a speed of 2.92 mph at 1677 rpm with 10.79% slip

Torque and Engine Performance

Maximum Torque at Dynamometer: 504.2 lb-ft at 1400 rpm
Variable Load Fuel Consumption: 5.192 Gal/hr with a fuel efficiency of 0.508 lb/hp.hr at an average power of 71.80 HP

Hydraulic Performance

Hydraulic Control System: Direct engine drive
Belt Pulley Speed: 1001 rpm with a belt speed of 3210 fpm

Overall Efficiency

Fuel Type: Diesel with Cetane No. 50
Total Operational Time: 47.25 hours

Nebraska Tractor Test Lab.(1955).Test 556: Oliver Super 99. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/531