Overview
The Jeep CJ-3A is a 4WD farm-type tractor produced between 1949 and 1953, featuring a Willys 2.2L four-cylinder gasoline engine and a 6-speed sliding gear transmission. The vehicle is built with an 80-inch wheelbase and is equipped with a Type I rear hitch and a 6-volt negative ground electrical system. According to Nebraska Tractor Test 432, it achieved a maximum belt power of 28.43 hp and a maximum drawbar pull of 2148 lbs.
Ideal Applications
Tested Nebraska Drawbar Performance:
The tractor recorded a maximum drawbar power of 25.94 hp and a maximum pull capacity of 2148 lbs during the October 1949 Nebraska Tractor Test 432.
Transmission and Drive Configuration:
The mechanical layout consists of a Borg-Warner T-90 6-speed sliding gear transmission paired with a two-speed Spicer transfer case and a four-wheel-drive system.
Engine and Accessory Specifications:
The liquid-cooled Willys L-134 gasoline engine features a 134.2 cubic inch displacement, an oil bath air cleaner, and an optional 540 RPM rear PTO.
Production
| Description | Truck-type tractor / Built in Toledo, Ohio, USA |
|---|---|
| Manufacturer | Jeep |
Engine
| Engine type | Willys 2.2L 4-cyl gasoline |
|---|---|
| Air cleaner | oil bath |
| Bore/Stroke | 3.125x4.375 inches (79 x 111 mm) |
| Compression | 6.5:1 |
| Coolant capacity | 11 qts (10.4 L) |
| Description | Willys L-134 / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 134.2 ci (2.2 L) |
| Firing order | 1-3-4-2 |
| Fuel system | carburetor |
| Power | 60 hp (44.7 kW) |
| Rated RPM | 2400 |
| Starter | electric |
| Starter volts | 6 |
| Oil capacity | 5 qts (4.7 L) |
| Belt (tested) | 28.43 hp (21.2 kW) |
| Drawbar (tested) | 25.94 hp (19.3 kW) |
| Plows | 2 (12-inch) |
Transmission
| Clutch | mechanical dry disc |
|---|---|
| Description | Three gears (1-3) plus reverse (R) with a two-speed Spicer transfer case. |
| Gears | 6 forward and 2 reverse |
| Transmission | Borg-Warner T-90 |
| Transmission type | 6-speed sliding gear |
| Type | sliding gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Hydraulic drum brakes |
| Drive type | Four-wheel drive |
| Steering | manual |
Hitch
| Rear Type | I |
|---|
PTO
| Rear PTO | optional |
|---|---|
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery volts | 6 |
|---|---|
| Ground | negative |
Dimensions & Tires
| Front tread | 48.25 inches (122 cm) |
|---|---|
| Ground clearance | 8.1 inches (20 cm) |
| Height | 66.75 inches (169 cm) |
| Length | 130 inches (330 cm) |
| Max weight | 2937 lbs (1332 kg) |
| Rear tread | 48.25 inches (122 cm) |
| Shipping weight | 2037 lbs (923 kg) |
| Wheelbase | 80 inches (203 cm) |
| Front tire | 6x16 |
| Rear tire | 6x16 |
| Weight | 2037 lbs (923 kg) |
| Wheelbase | 80 inches (203 cm) |
| Ag front | 6x16 |
| Ag rear | 6x16 |
Belt Pulley
| Diameter | 8 inches (20 cm) |
|---|---|
| RPM | 1550 |
| Speed | 3246 ft/min (989.38 meters/min) |
| Width | 8 inches (20 cm) |
Nebraska Tractor Test 432
| Belt fuel use (max) | 3.7 gal/hour (14.0 l/hour) |
|---|---|
| Belt power (max) | 28.43 hp (21.2 kW) |
| Description | Gasoline 6-speed 4WDOctober 25, 1949 - November 2, 1947Link: Nebraska Tractor Test 432 file / Drawbar performance / Gear 3 used for power test. / Gear 1 used for pull test. |
| Max power | 25.94 hp (19.3 kW) |
| Max pull | 2148 lbs (974 kg) |
References
| Description | Jeep Farm Power |
|---|