Introduction
Oliver Super 77 Row-Crop Tractor
The Oliver Super 77 is a row-crop tractor manufactured in Charles City, Iowa, USA, between 1954 and 1958. Part of the Oliver series evolution, this machine was designed to provide reliable power for mid-range agricultural operations during the mid-20th century.
Engine and Performance
The tractor is powered by a 216 cubic-inch (3.5 L) Waukesha-Oliver six-cylinder engine, designed to run on LP-gas. It features a liquid-cooled system and operates at a rated speed of 1600 RPM, producing approximately 48 horsepower. The engine utilizes an oil bath air cleaner and follows a 1-5-3-6-2-4 firing order.
Transmission and Drivetrain
The drivetrain consists of a gear-type transmission providing six forward speeds and two reverse speeds. Power is transferred through a 254 mm mechanical dry disc clutch. The tractor is configured as a two-wheel-drive unit, equipped with mechanical differential dry disc brakes for deceleration and steering assistance.
Hydraulics and PTO
The hydraulic system is an open-center type, featuring a pump flow capacity of 13 gallons per minute (49.2 lpm) and a system capacity of 2.9 gallons (11.0 L). The rear independent power take-off (PTO) provides 540 RPM at a rated engine speed of 1600 RPM, allowing for the operation of various mounted implements.
Dimensions and Operator Station
Built on a 90.8-inch (230 cm) wheelbase, the tractor offers a ground clearance of 24.9 inches (63 cm), suitable for row-crop applications. The operator station is of the open type, featuring manual steering, though power steering became available as an optional upgrade after 1957. The front and rear tread widths are adjustable to accommodate different row spacings.
Conclusion
With its 48-horsepower engine and versatile transmission, the Oliver Super 77 serves as a robust utility tractor suited for diverse field tasks. Its mechanical simplicity and adjustable tread configurations made it a staple for mid-sized farming operations during its production era.
Production Information of Oliver, Super 77
- Original price was $3,500 in 1958
- Row-Crop tractor
- Built in Charles City, Iowa, USA
| Manufacturer | Oliver |
|---|
Dimension and Tires Information of Oliver, Super 77
| Rear tread | 60 to 92.5 inches [152 to 234 cm] |
|---|---|
| Wheelbase | 90.8 inches [230 cm] |
| Ground clearance | 24.9 inches [63 cm] |
| Height | 61.5 inches [156 cm] |
| Length | 139.3 inches [353 cm] |
| Front tread | 60 to 84 inches [152 to 213 cm] |
| Width | 80.3 inches [203 cm] |
| Ag front | 5.50-16 |
|---|---|
| Ag front(optional) | 12-38 |
| Ag front(optional) | 6.00-16 |
| Ag rear | 11-38 |
Engine Specifications of Oliver, Super 77
- Waukesha-Oliver
- Liquid-cooled
- LP-gas
- 6-cylinder
| Sparkplug gap | 0.025 inches [0.635 mm] |
|---|---|
| Coolant capacity | 18 qts [17.0 L] |
| Rated RPM | 1600 |
| Point gap | 0.022 inches [0.559 mm] |
| Compression | 16:1 |
| Rated RPM | 1600 |
| Rated RPM(optional) | Coolant heater |
| Displacement | 216 ci [3.5 L] |
| Air cleaner | Oil bath |
| Bore/Stroke | 3.50x3.75 inches [89 x 95 mm] |
| Starter volts | 12 |
| Intake valve clearance | 0.010 inches (cold) [0.254 mm] |
| Exhaust valve clearance | 0.016 inches (cold) [0.406 mm] |
| Starter | Electric |
| Firing order | 1-5-3-6-2-4 |
Transmission Information of Oliver, Super 77
Transmission variants 1
| Type | Gear |
|---|---|
| Oil capacity | 18 qts [17.0 L] |
| Gears | 6 forward and 2 reverse |
| Clutch | 254mm mechanical dry disc |
Mechanical Specs of Oliver, Super 77
- Two-wheel drive
- Open operator station.
- Differential mechanical dry disc brakes
| Steering | Manual |
|---|---|
| Steering | Power |
Optional after 1957
Power Information of Oliver, Super 77
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540 (1.375) |
| Engine RPM | 533@1600 |
Hydraulics Specifications of Oliver, Super 77
| Type | Open center |
|---|---|
| Steering press. | 1000 psi [69.0 bar] |
| Capacity | 2.9 gal [11.0 L] |
| Pump flow | 13 gpm [49.2 lpm] |
Three-Point Hitch of Oliver, Super 77
| Rear Type | II/I |
|---|
Electrical System of Oliver, Super 77
| Ground | Positive |
|---|---|
| Battery volts | 6 |
| Battery volts(optional) | 2 (diesel) |
| Charging system | Generator |
| Charging system(optional) | 12 (late gas) |
| Batteries | 1 (gas) |
Where it sits
With 48 hp[B] HP, the Oliver Super 77 sits between 77 (37 HP) and 770 (52 HP) in Oliver's range. Its power puts it in the 71th percentile of 1950s models in our database (592 machines).
Frequently asked questions
How much horsepower does the Oliver Super 77 have?
The Oliver Super 77 delivers 48 hp[B] HP.
What years was the Oliver Super 77 produced?
The Oliver Super 77 was produced in 1954-1958.
What engine does the Oliver Super 77 have?
The Oliver Super 77 is powered by a LP-gas, 6-cylinder engine.
What transmission does the Oliver Super 77 use?
The Oliver Super 77 uses a Gear transmission.
Is the Oliver Super 77 4WD?
The Oliver Super 77 is available in 2WD.