Introduction
Allis Chalmers 620 Garden Tractor
The Allis Chalmers 620 is a garden tractor produced between 1973 and 1975. Manufactured by Simplicity in Port Washington, Wisconsin, this model was designed for grounds maintenance and light agricultural applications, featuring a robust gasoline-powered configuration.
Engine and Performance
The tractor is powered by an Onan CCKB engine, a 2-cylinder, air-cooled, horizontal-shaft opposed-twin gasoline engine. It features a displacement of 816 cc (49.8 ci) with a bore and stroke of 3.25 by 3.00 inches. Operating at a rated 3600 RPM, it provides a gross power output of 19.5 horsepower (14.5 kW). The engine utilizes a paper element air cleaner and requires a 3.5-quart (3.3 L) oil capacity.
Transmission and Chassis
The 620 utilizes a Sundstrand hydrostatic transmission, providing infinite forward and reverse speed control across three ranges. The drivetrain is configured as a two-wheel drive system. Maneuverability is managed via manual steering, and the tractor is equipped with disc brakes for stopping power. It features an open operator station design.
Hydraulics and Power Take-Off
The hydraulic system operates at a pressure of 500 psi (34.5 bar) with a pump flow rate of 2.25 gpm (8.5 lpm) and a fluid capacity of 1.25 gallons (4.7 L). The tractor is equipped with an independent front PTO (3600 RPM) and an optional independent rear PTO (2000 RPM), both utilizing electric clutches for engagement.
Dimensions and Specifications
The unit has a wheelbase of 56 inches (142 cm), an overall length of 83 inches (210 cm), and a width of 48 inches (121 cm). With a ground clearance of 15 inches (38 cm) and a shipping weight of 1300 lbs (589 kg), the machine is designed for stability. It is compatible with a 60-inch mower deck.
Conclusion
The Allis Chalmers 620 serves as a capable garden tractor for homeowners and small-scale operations requiring a versatile, hydrostatic-drive machine. Its combination of independent PTO systems and robust mechanical construction makes it well-suited for varied groundskeeping tasks.
Production Information of Allis Chalmers, 620
- Built in Port Washington, Wisconsin, USA
- Garden tractor
| Distributor | Allis Chalmers |
|---|---|
| Manufacturer | Simplicity |
Dimension and Tires Information of Allis Chalmers, 620
| Wheelbase | 56 inches [142 cm] |
|---|---|
| Shipping weight | 1300 lbs [589 kg] |
| Height | 43.25 inches [109 cm] |
| Length | 83 inches [210 cm] |
| Ground clearance | 15 inches [38 cm] |
| Width | 48 inches [121 cm] |
| Ag front | 4.00x12 |
|---|---|
| Lawn/turf rear | 29x12.50-15 |
| Ag rear | 8x16 |
| Lawn/turf front | 20x8-10 |
Engine Specifications of Allis Chalmers, 620
- Onan CCKB
- Air-cooled horizontal-shaft opposed-twin
- Gasoline
- 2-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 816 cc [49.8 ci] |
| Air cleaner | Paper element |
| Bore/Stroke | 3.25x3.00 inches [83 x 76 mm] |
| Oil capacity | 3.5 qts [3.3 L] |
| Rated RPM | 3600 |
| Compression | 7:1 |
| Power (gross) | 19.5 hp [14.5 kW] |
Transmission Information of Allis Chalmers, 620
Transmission variants 1
| Manufacturer | Sundstrand |
|---|---|
| Type | Hydrostatic |
| Gears | Infinite forward and reverse (3-range) |
Mechanical Specs of Allis Chalmers, 620
- Two-wheel drive
- Open operator station.
- Manual steering
- Disc brakes
Power Information of Allis Chalmers, 620
| Rear PTO(optional) | Independent |
|---|---|
| Clutch | Electric |
| Front PTO | Independent |
| Clutch | Electric |
| Front PTO Type | 3600 |
| Rear PTO Type | 2000 |
Hydraulics Specifications of Allis Chalmers, 620
| Capacity | 1.25 gal [4.7 L] |
|---|---|
| Pressure | 500 psi [34.5 bar] |
| Pump flow | 2.25 gpm [8.5 lpm] |
Three-Point Hitch of Allis Chalmers, 620
| Rear Type | 0 |
|---|
Electrical System of Allis Chalmers, 620
| Ground | Negative |
|---|---|
| Charging amps | 20 |
| Battery volts | 12 |
Where it sits
With 19 HP, the Allis Chalmers 620 sits just above 616 (16 HP) in Allis Chalmers's range. Its power puts it in the 99th percentile of 1970s models in our database (1008 machines).
Frequently asked questions
How much horsepower does the Allis Chalmers 620 have?
The Allis Chalmers 620 delivers 19 HP.
What years was the Allis Chalmers 620 produced?
The Allis Chalmers 620 was produced in 1973-1975.
What engine does the Allis Chalmers 620 have?
The Allis Chalmers 620 is powered by a Gasoline, 2-cylinder engine.
What transmission does the Allis Chalmers 620 use?
The Allis Chalmers 620 uses a Hydrostatic transmission.
How much does the Allis Chalmers 620 weigh?
The Allis Chalmers 620 weighs 1300 lbs [589 kg].
Is the Allis Chalmers 620 4WD?
The Allis Chalmers 620 is available in 2WD.