| Manufacturer |
Jeep |
| Price |
- |
| Model |
CJ-3A |
| Equipment Type |
Truck-Type Tractors |
| Factory |
Toledo, Ohio, USA |
NEBRASKA TRACTOR TEST 432 2
| Description |
Gasoline 6-speed 4WD/October 25, 1949 - November 2, 1947/Link: Nebraska Tractor Test 432 file/Drawbar performance/Gear 3 used for power test./Gear 1 used for pull test. |
| Belt power (max) |
28.43 hp/21.2 kW |
| Belt fuel use (max) |
3.7 gal/hour/14.0 l/hour |
| Max power |
25.94 hp/19.3 kW |
| Max pull |
2148 lbs/974 kg |
JEEP CJ-3A POWER
| Engine |
60 hp/44.7 kW |
| Plows |
2 (12-inch) |
| Drawbar (tested) |
25.94 hp/19.3 kW |
| Belt (tested) |
28.43 hp/21.2 kW |
ENGINE DETAIL
The Jeep CJ-3A, powered by the Willys L-134 engine, features a modest 60 hp output, making it suitable for light agricultural tasks or off-road utility work. Its low compression ratio (6.5:1) and carbureted fuel system offer simplicity and ease of maintenance, though they may limit performance and efficiency compared to modern fuel injection systems. The 11 qt coolant capacity is adequate for maintaining engine temperature under typical operating conditions, but may necessitate careful monitoring in extreme environments.
| Description |
Willys L-134/gasoline/4-cylinder/liquid-cooled |
| Displacement |
134.2 ci/2.2 L |
| Bore/Stroke |
3.125x4.375 inches/79 x 111 mm |
| Power |
60 hp/44.7 kW |
| Fuel system |
carburetor |
| Air cleaner |
oil bath |
| Compression |
6.5:1 |
| Rated RPM |
2400 |
| Firing order |
1-3-4-2 |
| Starter |
electric |
| Starter volts |
6 |
| Coolant capacity |
11 qts/10.4 L |
ENGINE OIL
The Jeep CJ-3A has an oil capacity of 5 quarts (4.7 liters), which is relatively modest, allowing for straightforward oil changes and lower maintenance costs. Adequate lubrication is critical for preserving engine performance and longevity, especially under varying load conditions typical for tractors. Ensure regular oil checks and changes to mitigate potential engine wear and optimize operational efficiency.
JEEP CJ-3A ENGINE
The Jeep CJ-3A, equipped with a Willys 2.2L 4-cylinder gasoline engine, offers a robust power-to-weight ratio, ideal for light agricultural tasks and off-road applications. Its relatively simple mechanical design facilitates easier repairs and maintenance, but the engine's limited torque output may struggle with heavy-duty tasks compared to modern tractors. This vehicle is best suited for small farms or recreational use, where maneuverability and versatility are prioritized over sheer power.
| Description |
Willys 2.2L 4-cyl gasoline |
TRANSMISSION
The Jeep CJ-3A tractor features a Borg-Warner T-90 sliding gear transmission, offering six forward and two reverse gears, enhancing versatility for various terrains. The mechanical dry disc clutch provides reliable engagement but may require more maintenance compared to hydraulic systems. The combination of three primary gears and a two-speed Spicer transfer case allows for effective torque management in off-road scenarios, making it suitable for agricultural and utility tasks.
| Transmission |
Borg-Warner T-90 |
| Type |
sliding gear |
| Gears |
6 forward and 2 reverse |
| Clutch |
mechanical dry disc |
| Description |
Three gears (1-3) plus reverse (R) with a two-speed Spicer transfer case. |
MECHANICAL
The Jeep CJ-3A tractor, equipped with a 4x4 MFWD 4WD chassis, offers enhanced traction in various terrains, making it suitable for agricultural and off-road applications. Its manual steering provides direct feedback, while the hydraulic drum brakes deliver consistent stopping power, although they may require more maintenance than disc brakes. The open operator station design allows for excellent visibility but offers limited protection from elements, making it ideal for warm, dry conditions.
| Chassis |
4x4 MFWD 4WD |
| Steering |
manual |
| Brakes |
hydraulic drum |
| Cab |
Open operator station. |
| Transmission |
6-speed sliding gear |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
optional |
| Rear RPM |
540 (1.375) |
JEEP CJ-3A TIRES
The Jeep CJ-3A tractor features 6x16 agricultural tires both front and rear, providing adequate traction for varied terrain while maintaining stability. This uniform tire size is advantageous for ease of replacement and ensures balanced weight distribution, crucial for pulling and towing applications. However, limited tire size may restrict performance in high-traction scenarios, such as muddy or heavily rutted fields, thus necessitating consideration of ground conditions when operating.
| Ag front |
6x16 |
| Ag rear |
6x16 |
DIMENSIONS
| Wheelbase |
80 inches/203 cm |
| Length |
130 inches/330 cm |
| Height |
66.75 inches/169 cm |
| Shiping weight |
2037 lbs/923 kg |
| Max weight |
2937 lbs/1332 kg |
| Ground clearance |
8.1 inches/20 cm |
| Front tread |
48.25 inches/122 cm |
| Rear tread |
48.25 inches/122 cm |
DIMENSIONS & TIRES
The Jeep CJ-3A, with a compact wheelbase of 80 inches, offers excellent maneuverability, making it suitable for tight agricultural spaces. Weighing 2037 lbs, it provides decent stability, but this may limit its load-carrying capacity compared to heavier tractors. The uniform tire size of 6x16 enhances balance and traction, though it may not perform optimally on varied terrains compared to tractors with larger rear tires.
| Wheelbase |
80 inches/203 cm |
| Weight |
2037 lbs/923 kg |
| Front tire |
6x16 |
| Rear tire |
6x16 |
BELT PULLEY
| Diameter |
8 inches/20 cm |
| Width |
8 inches/20 cm |
| RPM |
1550 |
| Speed |
3246 ft/min/989.38 meters/min |
ELECTRICAL
| Ground |
negative |
| Battery volts |
6 |
