Jeep CJ-3A
The Jeep CJ-3A is a tractor produced by Jeep. It is equipped with a 134.2 ci 2.2 L engine. The listed engine power is Gasoline (listed): 60 hp / 44.7 kW. Transmission: Borg-Warner T-90. Operating weight: 2037 lbs 923 kg.
Engine Power
Gasoline (listed): 60 hp / 44.7 kW
Fuel & Capacities
Gasoline
Transmission
Borg-Warner T-90
Operating Weight
2037 lbs
923 kg
Overview
 | 1949 - 1953
Truck-type tractor |
|---|
Production | |
|---|---|
Manufacturer | Jeep |
Truck-type tractor | |
Built in Toledo, Ohio, USA | |
Jeep CJ-3A Engine | |
|---|---|
Willys 2.2L 4-cyl gasoline | |
Engine details ...  |
Jeep CJ-3A Transmission | |
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6-speed sliding gear | |
Transmission details ...  |
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 |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Steering | manual |
Hydraulic drum brakes | |
Open operator station. | |
Tractor hitch | |
|---|---|
Rear Type | I |
Power Take-off (PTO) | |
|---|---|
Rear PTO | optional |
Rear PTO Type | 540 (1.375) |
Dimensions & Tires | |
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Wheelbase | 80 inches
203 cm |
Weight | 2037 lbs
923 kg |
Front tire | 6x16 |
Rear tire | 6x16 |
Full dimensions and tires ...  | |
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 |
References | |
|---|---|
 | |
Jeep Farm Power |
Engine
Engine Detail — 134.2 ci / 2.2 L Gasoline
Manufacturer | Willys L-134 |
Fuel Type | Gasoline |
Configuration | 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 |
Oil capacity | 5 qts
4.7 L |
Transmission
Transmission — Borg-Warner T-90
Transmission | Borg-Warner T-90 |
Type | sliding gear |
Gears | 6 forward and 2 reverse |
Clutch | mechanical dry disc |
Three gears (1-3) plus reverse (R) with a two-speed Spicer transfer case. | |
 | |
Dimensions
Jeep CJ-3A Tires | |
|---|---|
Ag front | 6x16 |
Ag rear | 6x16 |
Dimensions | |
|---|---|
Wheelbase | 80 inches
203 cm |
Length | 130 inches
330 cm |
Height | 66.75 inches
169 cm |
Shipping 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 |
Tests
Nebraska Tractor Test 432 | |
|---|---|
Gasoline 6-speed 4WD
October 25, 1949 - November 2, 1947
Link: Nebraska Tractor Test 432 file | |
Belt power (max) | 28.43 hp
21.2 kW |
Belt fuel use (max) | 3.7 gal/hour
14.0 l/hour |
Drawbar performance | |
Max power | 25.94 hp
19.3 kW |
Gear 3 used for power test. | |
Max pull | 2148 lbs
974 kg |
Gear 1 used for pull test. | |
Photos
Jeep CJ-3A tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Jeep CJ-3A based on its 60 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Jeep CJ-3A.
Estimated Continuous Field Runtime: 1.2 hrs
Approximately 1.2 hours of continuous field operation at ~75% rated power on a full tank (3.7 gal / 14 L).
Estimated 75% Load Fuel Burn~3.1 gal/hr (11.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Jeep CJ-3A Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Jeep CJ-3A.
Converted Equivalents:
Horsepower (HP)60 hp
Kilowatts (kW)44.7 kW
Metric Horsepower (PS / CV)60.8 PS
Direct Competitor Comparison
Compare Jeep CJ-3A against same-era industry alternatives in the same horsepower class.
Current Model
Jeep
Jeep CJ-3A
Engine Power:Gasoline (listed): 60 hp / 44.7 kW
★ Baseline Reference
Related models
Jeep CJ-2A
- Power:
- 60
- Production years:
- 1947 - 1949
Jeep CJ-3B
- Power:
- 75
- Production years:
- 1954 - 1968