Allis Chalmers 7020
Power
146 hp
Production
1978-1981
Engine
Intercooled turbocharged diesel, 6-cylinder
Transmission
Power Director
Drive
2WD
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Introduction
Allis Chalmers 7020 Row-Crop Tractor
Produced between 1978 and 1981, the Allis Chalmers 7020 is a two-wheel drive row-crop tractor manufactured in West Allis, Wisconsin, USA. It is designed to provide substantial power and versatile transmission options for large-scale agricultural operations.
Engine and Performance
The tractor is powered by the Allis Chalmers 649I, a 6-cylinder liquid-cooled turbocharged diesel engine with intercooling. It features a 4.9-liter displacement and generates 146 hp at a rated speed of 2300 RPM. The engine utilizes a dry air cleaner with a pre-cleaner system to maintain performance in dusty field conditions.
Transmission and Drivetrain
The 7020 offers several partial power shift transmission configurations, including 12, 16, or 20 forward speeds and corresponding reverse gears. These systems utilize the Power Director setup, allowing for efficient speed adjustments via foot-operated power shift buttons. Final drives are equipped with inboard planetary gears for enhanced durability.
Hydraulics and PTO
The hydraulic system is a closed-center design providing a total flow of 45 gpm (170.3 lpm), with 22 gpm allocated to pump flow and 9.5 gpm for steering. It supports 2 or 3 valves for implement control. The rear independent PTO operates at both 540 and 1000 RPM, ensuring compatibility with a wide range of powered implements.
Operator Environment and Dimensions
The tractor is standard-fitted with the Acousta cab, which includes heating, with optional air-conditioning and audio equipment available. It features hydrostatic power steering and differential power wet disc brakes. The machine has a 106-inch wheelbase and is compatible with various tire configurations, including 18.4x38 or 24.5x32 rear options.
Conclusion
The Allis Chalmers 7020 is a robust row-crop tractor engineered for high-output agricultural tasks. Its combination of a high-flow hydraulic system, multiple partial power shift gear configurations, and a reliable 146 hp engine makes it a versatile tool for field work requiring consistent power and precise control.
Production Information of Allis Chalmers, 7020
- Row-Crop tractor
- Built in West Allis, Wisconsin, USA
| Manufacturer | Allis Chalmers |
|---|---|
| Original price | $39,378 |
Dimension and Tires Information of Allis Chalmers, 7020
| Rear axle | 3.625 inch diameter [92 mm] |
|---|---|
| Wheelbase | 106 inches [269 cm] |
| Clearance (front axle) | 21 inches [53 cm] |
| Clearance (front axle)(optional) | 118.7 inches [301 cm] |
| Length | 163 inches [414 cm] |
| Rear axle | 3.75 inch diameter [95 mm] |
| Clearance (rear axle) | 28 inches [71 cm] |
| Width | 92.6 inches [235 cm] |
Optional long axle
| Ag front | 11.00x16 |
|---|---|
| Ag rear | 24.5x32 |
| Ag rear(optional) | 14Lx16 |
| Ag rear | 18.4x38 |
| Ag rear(optional) | 15.5x38 |
| Ag rear(optional) | 30.5x32 |
| Ag front | 10.00x16 |
| Ag front(optional) | 18.4x38 |
| Ag front(optional) | 16.9x38 |
| Ag front(optional) | 20.8x34 |
Engine Specifications of Allis Chalmers, 7020
- Allis Chalmers 649I
- Liquid-cooled Inline
- 6-cylinder
- Intercooled turbocharged diesel
| Air cleaner | Dry with pre-cleaner |
|---|---|
| Firing order | 1-5-3-6-2-4 |
| Displacement | 301 ci [4.9 L] |
| Bore/Stroke | 3.875x4.25 inches [98 x 108 mm] |
| Power | 146 hp [108.9 kW] |
| Rated RPM | 2300 |
| Compression | 16.25:1 |
| Coolant capacity | 26 qts [24.6 L] |
| Oil capacity | 20 qts [18.9 L] |
| Starter volts | 12 |
Transmission Information of Allis Chalmers, 7020
Transmission variants 1
- Four gears in two ranges (slow/fast) with two-range power shift. Power shift controlled by foot buttons.
| Transmission | Power Director |
|---|---|
| Oil capacity | 29.6 qts [28.0 L] |
| Type | Partial power shift |
| Gears | 16 forward and 4 reverse |
Transmission variants 2
- Five gears in two ranges (slow/fast) with two-range power shift. Power shift controlled by foot buttons.
| Transmission | Power Director |
|---|---|
| Oil capacity | 29.6 qts [28.0 L] |
| Type | Partial power shift |
| Gears | 20 forward and 4 reverse |
Transmission variants 3
- Six gears in two ranges. Power shift between gears in range.
| Transmission | Power Shift |
|---|---|
| Oil capacity | 29.6 qts [28.0 L] |
| Type | Partial power shift |
| Gears | 12 forward and 2 reverse |
- 16-speed partial power shift
- 20-speed partial power shift
- 12-speed partial power shift
Mechanical Specs of Allis Chalmers, 7020
- Two-wheel drive
- Acousta cab standard with heat. Air-conditioning optional. Radio and eight-track player optional.
- Differential power wet disc brakes
| Final drives | Inboard planetary |
|---|---|
| Steering | Hydrostatic power |
Power Information of Allis Chalmers, 7020
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of Allis Chalmers, 7020
| Type | Closed center |
|---|---|
| Steering flow | 9.5 gpm [36.0 lpm] |
| Total flow | 45 gpm [170.3 lpm] |
| Valves | 2 or 3 |
| Pump flow | 22 gpm [83.3 lpm] |
Three-Point Hitch of Allis Chalmers, 7020
| Rear Type | 3/2 |
|---|---|
| Rear lift (at 24"/610mm) | 6,680 lbs [3030 kg] |
Where it sits
With 146 HP, the Allis Chalmers 7020 sits between 7010 (118 HP) and 8030 (148 HP) in Allis Chalmers's range. Its power puts it in the 82th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Allis Chalmers 7020 have?
The Allis Chalmers 7020 delivers 146 HP.
What years was the Allis Chalmers 7020 produced?
The Allis Chalmers 7020 was produced in 1978-1981.
What engine does the Allis Chalmers 7020 have?
The Allis Chalmers 7020 is powered by a Intercooled turbocharged diesel, 6-cylinder engine.
What transmission does the Allis Chalmers 7020 use?
The Allis Chalmers 7020 uses a Power Director transmission.
Is the Allis Chalmers 7020 4WD?
The Allis Chalmers 7020 is available in 2WD.