| Manufacturer |
Caterpillar |
| Price |
2,418(USD) |
| Model |
R2 |
| Equipment Type |
Agricultural Crawler Tractors |
| Factory |
Peoria, Illinois, USA |
ENGINES OVERVIEW
The Caterpillar R2 tractor is equipped with a choice of two gasoline engines: a 4.1L and a 3.6L 4-cylinder option, providing flexibility in power output and fuel efficiency. The larger 4.1L engine may offer more torque for heavy-duty applications, while the 3.6L variant could be more suited for lighter tasks, optimizing fuel consumption. When selecting an engine, consider the balance between operational demands and overall operating costs to achieve the best performance in your specific usage scenario.
| Description |
Caterpillar 4.1L 4-cyl gasoline Caterpillar 3.6L 4-cyl gasoline |
ENGINE DETAIL 1
The Caterpillar R2 tractor features a robust 4-cylinder gasoline engine with a displacement of 251ci (4.1L) and a bore/stroke of 4.00x5.00 inches, delivering a good power-to-weight ratio for agricultural applications. The oil bath air cleaner enhances engine longevity by effectively filtering particulates, though it requires regular maintenance. Operating at a rated RPM of 950 may limit its speed but provides strong torque at lower speeds, making it ideal for heavy-duty towing or plowing tasks.
| Description |
Caterpillar gasoline 4-cylinder liquid-cooled Original engine, used on the 5E version |
| Displacemen |
251ci / 4.1L |
| Bore/Strok |
4.00x5.00inches / 102x 127mm |
| Air cleane |
oil bath |
| Rated RP |
950 |
ENGINE DETAIL 2
The Caterpillar R2 tractor features a 3400G gasoline engine with a displacement of 221 cubic inches (3.6L), optimized for mid-range torque at a rated RPM of 1525, making it suitable for moderate farm tasks. Its oil bath air cleaner system enhances engine longevity by ensuring cleaner air intake, although it may necessitate more frequent maintenance compared to dry systems. With coolant and oil capacities of 28 quarts and 12 quarts respectively, the R2 is engineered for sustained operation in demanding conditions, yet these capacities may demand careful monitoring to avoid overheating or lubrication failures during prolonged use.
| Description |
Caterpillar 3400G gasoline 4-cylinder liquid-cooled The 3400G was used on the 4J and 6J versions, which were most R-2 tractors built |
| Displacemen |
221ci / 3.6L |
| Bore/Strok |
3.75x5.00inches / 95x 127mm |
| Air cleane |
oil bath |
| Rated RP |
1525 |
| Oil capacit |
12qts / 11.4L |
| Coolant capacit |
28qts / 26.5L |
CATERPILLAR R2 ENGINES
The Caterpillar R2 tractor is powered by either a 4.1L or 3.6L 4-cylinder gasoline engine, providing flexibility in power and efficiency depending on the workload. Its 20-gallon fuel tank offers extended operation time, ideal for larger tasks or longer fieldwork sessions, but potential downtime for fuel refilling should be considered in high-demand scenarios. The choice of engine displacement may affect torque delivery and fuel economy, thus impacting performance tailored to specific applications.
| Description |
Caterpillar 4.1L 4-cyl gasoline Caterpillar 3.6L 4-cyl gasoline |
| Fuel tan |
20gal / 75.7L |
TRANSMISSIONS OVERVIEW
The Caterpillar R2 tractor features a dual-range transmission with 3-speed gear and 5-speed gear options, providing versatility for various terrain and load conditions. This allows operators to optimize performance for both low-torque tasks and high-speed applications effectively. However, the complexity of managing multiple gear settings may require a learning curve for new operators to reach optimal efficiency.
| Description |
3-speed gear 5-speed gear |
TRANSMISSION 1
The Caterpillar R2 tractor features a three-speed transmission, comprising three forward gears and one reverse, optimized for versatility in various agricultural applications. The limited production of the 5E version until 1938 contributes to its rarity, enhancing its value among collectors and enthusiasts. However, users may find the gear range less suitable for modern heavy-duty operations compared to contemporary tractors with more advanced transmission systems.
| Typ |
gear |
| Gear |
3 forward and 1 reverse |
| Description |
The three-speed was used on the 5E version, built in limited quantities until 1938 |
TRANSMISSION 2
The Caterpillar R2 tractor features a 5-speed forward and 1-speed reverse gear transmission, providing flexibility for various operational tasks. With an oil capacity of 8 quarts (7.6 liters), it ensures optimal lubrication and cooling of the transmission system, which is particularly advantageous in heavy-duty applications. However, the limited number of gears may pose challenges in terrain adaptability, potentially reducing efficiency in steep or varied landscapes compared to tractors with more advanced transmission options.
| Typ |
gear |
| Gear |
5 forward and 1 reverse |
| Oil capacit |
8qts / 7.6L |
| Description |
The five speed transmission was used on the R-2 4J and R-2 6J |
CATERPILLAR R2 TRANSMISSIONS
The Caterpillar R2 tractor features a 3-speed transmission that provides robust torque delivery for heavy-duty applications, while the 5-speed option enhances versatility and fuel efficiency across varied terrains. The 3-speed gear is advantageous for straightforward, high-torque tasks, whereas the 5-speed gear allows for fine-tuning speed and power output in fluctuating conditions. A potential challenge with the 3-speed transmission may arise in situations requiring precise speed management, making the 5-speed more desirable for operators needing adaptability.
| Description |
3-speed gear 5-speed gear |
MECHANICAL
The Caterpillar R2 is a crawler tractor featuring an open operator station, enhancing operator visibility and accessibility but potentially exposing the operator to environmental factors. Key advantages include superior traction on uneven terrains due to its crawler design, while challenges may arise in adverse weather conditions. Ideal for rugged construction or agricultural applications, the R2 is suited for tasks requiring mobility and stability over soft ground.
| Driv |
crawler |
| Description |
Open operator station |
CATERPILLAR R2 TRACKS
DIMENSIONS & TRACKS
| Weigh |
6350lbs / 2880kg |
| Description |
13-inch tracks |
R2 SERIAL LOCATION
| Description |
Serial number plate on the left side of the R-2 engine, below the rear spark plug |
BELT PULLEY
| Diamete |
10.5inches / 26cm |
| Widt |
6.5inches / 16cm |
| RP |
950 |
