Overview
The Oliver 90 is a standard-tread farm tractor manufactured in Charles City, Iowa, between 1937 and 1952. It is powered by a 7.3L four-cylinder Waukesha-Oliver kerosene engine and features a four-speed gear transmission with manual steering. The machine is configured with an open operator station and has a reported weight of 7,000 lbs.
Ideal Applications
Engine and Power Specifications:
The 443 ci liquid-cooled kerosene engine is rated at 1125 RPM and provides a claimed 44 hp at the belt and 22 hp at the drawbar.
Transmission and Drive Layout:
The mechanical system consists of a two-wheel drive arrangement with four forward gears and one reverse gear.
Chassis and Tire Configuration:
This 7,000-lb tractor is equipped with 7.50-18 front tires and rear options including 46x12 steel wheels or 13-30 rubber tires.
Production
| Description | Standard-tread tractor |
|---|---|
| Factories | Charles City, Iowa, USA |
| Manufacturer | Oliver |
Engine
| Engine type | Waukesha-Oliver 7.3L 4-cyl kerosene |
|---|---|
| Air cleaner | oil bath |
| Bore/Stroke | 4.75x6.25 inches (121 x 159 mm) |
| Description | Waukesha-Oliver / kerosene / 4-cylinder / liquid-cooled |
| Displacement | 443 ci (7.3 L) |
| Rated RPM | 1125 |
| Starter type | hand-crank |
| Belt (claimed) | 44 hp (32.8 kW) |
| Drawbar (claimed) | 22 hp (16.4 kW) |
Transmission
| Gears | 4 forward and 1 reverse |
|---|---|
| Transmission type | 4-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive type | Two-wheel drive |
| Steering | manual |
PTO
| Rear PTO | optional |
|---|
Dimensions & Tires
| Weight | 7,000 lbs (3175 kg) |
|---|---|
| Front tire | 7.50-18 |
| Rear tire | 46x12 |
| Weight | 7,000 lbs (3175 kg) |
| Ag front | 7.50-18 |
| Ag rear | 46x12 (steel) / 13-30 |
90 Serial Numbers
| 1937 | 508918 |
|---|---|
| 1938 | 508935 |
| 1939 | 509612 |
| 1940 | 510068 |
| 1941 | 510564 |
| 1942 | 510977 |
| 1943 | 511296 |
| 1944 | 511474 |
| 1945 | 512044 |
| 1946 | 512821 |
| 1947 | 513106 |
| 1948 | 513856 |
| 1949 | 514856 |
| 1950 | 516276 |
| 1951 | 516888 |
| 1952 | 517874 |
| Description | FAQ: How to read a serial number table. |
Variants
| 90 | all-fuel engine |
|---|---|
| 99 | gasoline engine |