Oliver 990

Last Updated: June 2024

Overview

The Oliver 990 is a 2WD standard-tread tractor that was manufactured by Oliver in Charles City, Iowa, USA between 1958 and 1961. It features a 3.5 L (213.0 cu·in) three-cylinder General Motors diesel engine with a power output of 61.4 hp at 1800 rpm. This model utilizes a gear type transmission with 6 forward and 2 reverse gears and is equipped with power steering, disc brakes, and an open operator station. The chassis configuration is 4x2 2WD, with a front tire size of 7.50-18 and a rear tire size of 18-26.

Key Specifications

Category: Utility, Standard Tread

Power Output: 61.4

Transmission: Gear

Drive Type: 2WD

Operating Weight: 11,000

Fuel Type: Diesel

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Oliver 990 Tractor

Oliver 990 vs. Similar Tractors

Power Output

Average

Greater than 58% of similar tractors.

Operating Weight

Poor

Greater than 5% of similar tractors.

Technical Specifications

Engine

Manufacturer: General Motors
Model: Mar-71
Cooling Type: Liquid-cooled
Cylinder Orientation: Inline
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Blower
Cylinders: 3
Displacement (ci): 213
Bore (in): 4.25
Stroke (in): 5
Rated RPM: 1800
Power Output (hp): 61.4

Transmission

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

Dimensions

Length (in): -
Width (in): -
Height (in): -
Operating Weight (lb): 11,000

Power Take-Off (PTO)

PTO Type: Independent
PTO Speed 1 (rpm): 540
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD
Drive Type: 2WD
Steering Type: Power
Coolant Capacity (qts): -
Front Tire Diameter (in): 18
Front Tire Width (in): 7.5
Rear Tire Diameter (in): 26
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Agricultural
Manufacture - End Year: 1961
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: Open
Starter Type: Electric
Brake Type: Disc
Hydraulic System Type: -