Introduction
Hefty Hi-G High-Clearance Tractor
The Hefty Hi-G is a specialized high-clearance tractor manufactured in Juneau, Wisconsin, USA, between 1974 and 1978. Designed for specific agricultural tasks requiring increased ground clearance, this two-wheel-drive machine represents a period of American tractor engineering focused on utility and durability.
Engine and Powertrain
The tractor is powered by a liquid-cooled, 2-cylinder Mitsubishi diesel engine. It features a displacement of 1.2 liters (76 cubic inches) and produces 27 horsepower (20.1 kW). Starting is achieved via a 12-volt electric starter system. The power is managed through a manual transmission offering 6 forward gears and 1 reverse gear, coupled with a mechanical dry disc clutch.
Hydraulics and Controls
The Hefty Hi-G utilizes an open-center hydraulic system designed for the operation of implements. The system operates at a pressure of 1500 psi (103.4 bar) with a pump flow capacity of 3.5 gallons per minute (13.2 liters per minute). Operator control is facilitated through manual steering and mechanical dry disc brakes, housed within an open operator station.
Dimensions and Chassis
The machine is characterized by its high-clearance design, offering a standard ground clearance of 36 inches, with optional configurations reaching up to 48 inches. The wheelbase is adjustable, ranging from 76 to 90 inches depending on the front axle setting. The tractor has a base weight of 2,950 lbs (1,338 kg) and an overall length of 125 inches at its closest wheelbase setting.
Conclusion
The Hefty Hi-G is a robust, purpose-built tractor suitable for agricultural operations that demand significant vertical clearance between the chassis and the ground. Its simple mechanical design and reliable Mitsubishi engine make it a practical choice for collectors and farmers requiring a specialized high-clearance machine.
Production Information of Hefty, Hi-G
- High-Clearance tractor
- Built in Juneau, Wisconsin, USA
| Manufacturer | Hefty |
|---|
Dimension and Tires Information of Hefty, Hi-G
| Wheelbase | 76 inches [193 cm] |
|---|---|
| Ground clearance | 36 inches [91 cm] |
| Weight | 2950 lbs [1338 kg] |
| Length | 125 inches [317 cm] |
| Height (steering wheel) | 82 inches [208 cm] |
Multiple position front axle allowed for a wheelbase range of 76 to 90 inches.
Optional configurations allowed for a ground clearance up to 48 inches.
At closest wheelbase setting.
| Ag front | 5.00-15 |
|---|---|
| Ag front(optional) | 12.4-24 |
| Ag rear | 11.2-24 |
| Ag rear | 9.5-24 |
| Ag rear(optional) | 12.4-28 |
| Ag front | 6.50-16 |
Engine Specifications of Hefty, Hi-G
- Mitsubishi
- Liquid-cooled
- Diesel
- 2-cylinder
| Power | 27 hp [20.1 kW] |
|---|---|
| Displacement | 76 ci [1.2 L] |
| Starter | Electric |
| Bore/Stroke | 3.54x3.86 inches [90 x 98 mm] |
| Starter volts | 12 |
Transmission Information of Hefty, Hi-G
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 6 forward and 1 reverse |
| Clutch | Mechanical dry disc |
Mechanical Specs of Hefty, Hi-G
- Two-wheel drive
- Open operator station.
- Manual steering
- Mechanical dry disc brakes
Power Information of Hefty, Hi-G
| Engine | 27 hp [20.1 kW] |
|---|
Hydraulics Specifications of Hefty, Hi-G
| Type | Open center |
|---|---|
| Pressure | 1500 psi [103.4 bar] |
| Pump flow | 3.5 gpm [13.2 lpm] |
Electrical System of Hefty, Hi-G
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
Its power puts it in the 16th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Hefty Hi-G have?
The Hefty Hi-G delivers 27 HP.
What years was the Hefty Hi-G produced?
The Hefty Hi-G was produced in 1974-1978.
What engine does the Hefty Hi-G have?
The Hefty Hi-G is powered by a Diesel, 2-cylinder engine.
What transmission does the Hefty Hi-G use?
The Hefty Hi-G uses a Gear transmission.
How much does the Hefty Hi-G weigh?
The Hefty Hi-G weighs 2950 lbs [1338 kg].
Is the Hefty Hi-G 4WD?
The Hefty Hi-G is available in 2WD.