Oliver OC-3
The Oliver OC-3 is a compact crawler tractor built from 1951 to 1957. It's designed for agricultural work and features a track drive system for better traction in tough conditions. This tractor has a simple, open operator station and uses manual steering. Under the hood, the OC-3 has a Hercules gasoline engine with 4 cylinders. The engine is liquid-cooled and naturally aspirated, producing 29 hp at 1700 rpm. It has a below-average displacement of 133 ci. The tractor uses a gear-type transmission with 3 forward gears and 1 reverse gear. It measures 100 inches long, 52.5 inches wide, and 50.5 inches tall, with an operating weight of 3860 lb. The OC-3's compact size and crawler design make it useful for working in tight spaces or on rough terrain.

Quick specs
- Category
- Crawler
- Engine Power Output
- 29hp
- Operating Weight
- 3,860 lb
- Transmission
- Gear type
At a glance
How the OC-3 compares
vs. Crawler medianDistribution
Engine Power (hp)
Across all Crawler tractors
This model
The OC-3 ranks at the 13th percentile for engine power among recorded crawler tractors.
Overview
About the Oliver OC-3
The Oliver OC-3 is a compact crawler tractor built from 1951 to 1957. It's designed for agricultural work and features a track drive system for better traction in tough conditions. This tractor has a simple, open operator station and uses manual steering. Under the hood, the OC-3 has a Hercules gasoline engine with 4 cylinders. The engine is liquid-cooled and naturally aspirated, producing 29 hp at 1700 rpm. It has a below-average displacement of 133 ci. The tractor uses a gear-type transmission with 3 forward gears and 1 reverse gear. It measures 100 inches long, 52.5 inches wide, and 50.5 inches tall, with an operating weight of 3860 lb. The OC-3's compact size and crawler design make it useful for working in tight spaces or on rough terrain.
Full specifications
Every recorded spec
General
| Manufacturer | Oliver |
|---|---|
| Model | OC-3 |
| Category | Crawler tractor |
| Type | Crawler |
| Years built | 1951–1957 |
| Operating weight | 3,860lb |
Engine
| Make | Hercules |
|---|---|
| Power | 29hp |
| Cylinders | 4 |
| Displacement | 133ci |
| Bore | 3.27in |
| Stroke | 4.02in |
Transmission
| Type | Gear type |
|---|---|
| Forward gears | 3 |
| Reverse gears | 1 |
Chassis & drive
| Chassis | Crawler |
|---|---|
| Drive | Track |
| Steering | Manual |
| Cab | Open operator station |
Dimensions
| Length | 100in |
|---|---|
| Width | 52.5in |
| Height | 50.5in |
| Operating weight | 3,860lb |
Capacities
| Cooling system | 2.75gal |
|---|
Head to head
OC-3 vs. Crawler median
How the Oliver OC-3 compares to other Crawler tractors
| Spec | This model | Crawler median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 29 hp | 200 hp | -85% | 13th |
| Engine Displacement | 133 ci | 468 ci | -72% | 13th |
| Cylinders | 4 | 6 | -33% | 33rd |
| Forward Gears | 3 | 10 | -70% | 8th |
| Operating Weight | 3,860 lb | 23,320 lb | -83% | 12th |
| Length | 100 in | 146 in | -32% | 3rd |
| Width | 52.5 in | 79.5 in | -34% | 14th |
| Height | 50.5 in | 90.6 in | -44% | 2nd |
Medians and percentiles are computed from the crawler tractors in our database with a recorded value for each spec (sample sizes 134–192 models).
Compare to tractors with similar specs
Commonly compared Oliver tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Oliver OC-6 | 34.41 hp | 5,565 lb | — | Compare → |
| Oliver OC-12 | 57.93 hp | 11,259 lb | — | Compare → |
| Oliver 1870 | — | 11,900 lb | — | Compare → |
| Oliver 1900 | — | 12,000 lb | — | Compare → |
| Oliver 2270 | — | 17,100 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers D10 | 28.57 hp | 2,700 lb | 1959–1967 | Compare → |
| AGCO ST28A | 28.4 hp | 2,400 lb | — | Compare → |
| AGCO ST30x | 28.4 hp | 1,984 lb | — | Compare → |
| AGCO ST30 | 30.3 hp | 2,594 lb | — | Compare → |
| Allis Chalmers D272 | 27.5 hp | 2,060 lb | — | Compare → |
Explore
Oliver siblings
Explore
Similar-spec models
Gallery
Oliver OC-3 photos




FAQ
Common questions
When was the Oliver OC-3 made?
The Oliver OC-3 was manufactured from 1951 to 1957.
What is the operating weight of the Oliver OC-3?
In working trim, the Oliver OC-3 comes in at roughly 3,860 lb.
Which transmission does the Oliver OC-3 use?
The Oliver OC-3 is equipped with a Gear type transmission with 3 forward gears.
What is the engine power output of the Oliver OC-3?
Rated engine output for the Oliver OC-3 is 29 hp, delivered by a 4-cylinder engine. The engine displaces 133 ci.
How do I maintain a Oliver OC-3?
Routine service for the Oliver OC-3 covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.



