Caterpillar D9
Power
286 hp
Production
1955-1959
Engine
Turbocharged diesel, 6-cylinder
Transmission
Gear
Introduction
Caterpillar D9 Crawler Tractor
The Caterpillar D9 is a heavy-duty crawler tractor produced in Peoria, Illinois, USA, between 1955 and 1959. Designed for demanding agricultural and industrial applications, this machine represents a significant milestone in mid-20th-century heavy equipment engineering.
Engine and Powerplant
The tractor is powered by the Caterpillar D353, a 6-cylinder, turbocharged diesel engine. With a displacement of 1473 cubic inches (24.1 liters) and a compression ratio of 15.5:1, the engine delivers a net power output of 286 hp (213.3 kW) at a rated speed of 1240 RPM. The cooling system is liquid-based, and the unit includes a specialized 2-cylinder gasoline pony engine for starting purposes.
Transmission and Drivetrain
The D9 offers flexible transmission configurations to suit operational requirements. The standard gear transmission provides 6 forward and 6 reverse speeds, utilizing a wet disc clutch for power engagement. Alternatively, a torque converter option is available, featuring 3 forward and 2 reverse speed settings.
Mechanical Specifications and Chassis
As a crawler tractor, the D9 utilizes tracks for propulsion, providing high flotation and traction on challenging terrain. The machine has a substantial operating weight of 66,025 lbs (29,948 kg). The operator environment consists of an open station, designed for direct access to controls and clear visibility of the working area.
Conclusion
The Caterpillar D9 is a high-capacity machine engineered for heavy traction and earthmoving tasks. Its robust construction and significant power-to-weight ratio make it suitable for intensive field operations and industrial environments where high torque and stability are essential.
Production Information of Caterpillar, D9
- Agricultural Crawler tractor
- Built in Peoria, Illinois, USA
| Manufacturer | Caterpillar |
|---|
Engine Specifications of Caterpillar, D9
- Caterpillar D353
- Liquid-cooled
- Turbocharged diesel
- 6-cylinder
| Starter volts | 6 |
|---|---|
| Displacement | 1473 ci [24.1 L] |
| Compression | 15.5:1 |
| Bore/Stroke | 6.25x8.00 inches [159 x 203 mm] |
| Starter | 2-cylinder gas pony engine |
| Rated RPM | 1240 |
| Power (net) | 286 hp [213.3 kW] |
Electric starter for pony engine
Transmission Information of Caterpillar, D9
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 6 forward and reverse |
| Clutch | Wet disc |
Transmission variants 2
| Type | Torque converter |
|---|---|
| Gears | 3 forward and 2 reverse |
- 6-speed gear
- 3-speed torque converter
Mechanical Specs of Caterpillar, D9
- Open operator station.
| Drive | Crawler |
|---|
Power Information of Caterpillar, D9
- Https://www.tractordata.com/farm-tractors/002/9/7/2977-caterpillar-d9-tests.html
Where it sits
With 286 HP, the Caterpillar D9 sits between D7G SA (250 HP) and D8L SA (400 HP) in Caterpillar's range. Its power puts it in the 99th percentile of 1950s models in our database (592 machines).
Frequently asked questions
How much horsepower does the Caterpillar D9 have?
The Caterpillar D9 delivers 286 HP.
What years was the Caterpillar D9 produced?
The Caterpillar D9 was produced in 1955-1959.
What engine does the Caterpillar D9 have?
The Caterpillar D9 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the Caterpillar D9 use?
The Caterpillar D9 uses a Gear transmission.