Caterpillar R3
The Caterpillar R3 is a powerful tractor built for tough jobs. It has a gasoline engine made by Caterpillar with 4 cylinders and 350 cubic inches of displacement. This engine can produce up to 41.99 horsepower at 1101 RPM, making it strong enough for most farm tasks. The tractor uses a gear transmission with 3 forward gears and 1 reverse gear, giving the driver good control over speed and power. This tractor is special because it runs on tracks instead of wheels. It has 29 tracks on each side, measuring 16 inches by 2 inches. The tracks help the R3 move well on different types of ground. The engine is cooled by liquid, which helps it work well even when it's hot outside. The R3 also has a good air cleaner that uses three different methods to keep the engine clean: centrifugal force, oil, and matted wire. This helps the tractor last longer and work better in dusty conditions that are common on farms.
Quick specs
- Category
- Crawler
- Transmission
- Gear
Overview
About the Caterpillar R3
The Caterpillar R3 is a powerful tractor built for tough jobs. It has a gasoline engine made by Caterpillar with 4 cylinders and 350 cubic inches of displacement. This engine can produce up to 41.99 horsepower at 1101 RPM, making it strong enough for most farm tasks. The tractor uses a gear transmission with 3 forward gears and 1 reverse gear, giving the driver good control over speed and power. This tractor is special because it runs on tracks instead of wheels. It has 29 tracks on each side, measuring 16 inches by 2 inches. The tracks help the R3 move well on different types of ground. The engine is cooled by liquid, which helps it work well even when it's hot outside. The R3 also has a good air cleaner that uses three different methods to keep the engine clean: centrifugal force, oil, and matted wire. This helps the tractor last longer and work better in dusty conditions that are common on farms.
Full specifications
Every recorded spec
General
| Manufacturer | Caterpillar |
|---|---|
| Model | R3 |
| Category | Crawler tractor |
Engine
| Make | Caterpillar |
|---|---|
| Cylinders | 4 |
| Displacement | 350ci |
| Bore | 4.5in |
| Stroke | 5.5in |
Transmission
| Type | Gear |
|---|---|
| Forward gears | 3 |
| Reverse gears | 1 |
Head to head
R3 vs. Crawler median
How the Caterpillar R3 compares to other Crawler tractors
| Spec | This model | Crawler median | Difference | Percentile |
|---|---|---|---|---|
| Engine Displacement | 350 ci | 468 ci | -25% | 44th |
| Cylinders | 4 | 6 | -33% | 33rd |
| Forward Gears | 3 | 10 | -70% | 8th |
Medians and percentiles are computed from the crawler tractors in our database with a recorded value for each spec (sample sizes 179–192 models).
Compare to tractors with similar specs
Commonly compared Caterpillar tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Caterpillar D3B SA Special Application | — | 13,846 lb | — | Compare → |
| Caterpillar D4D SA Special Application | 74 hp | 15,200 lb | — | Compare → |
| Caterpillar D4E SA Special Application | — | 19,050 lb | — | Compare → |
| Caterpillar D5B SA Special Application | — | 23,320 lb | — | Compare → |
| Caterpillar D6 | — | 16,695 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Advance-Rumely 6A | — | 6,370 lb | — | Compare → |
| Advance-Rumely DoAll | — | 3,702 lb | — | Compare → |
| Advance-Rumely OilPull B 25/45 | — | 25,000 lb | — | Compare → |
| Advance-Rumely OilPull E 30/60 | — | 26,300 lb | — | Compare → |
| Advance-Rumely OilPull F 15/30 | — | 16,500 lb | — | Compare → |
Explore
Caterpillar siblings
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FAQ
Common questions
How many cylinders does the Caterpillar R3 have?
The Caterpillar R3 runs a 4-cylinder engine with a displacement of 350 ci.
What transmission is in the Caterpillar R3?
Transmission on the Caterpillar R3 is Gear, with 3 forward speeds.
What maintenance does the Caterpillar R3 require?
Like any tractor, the Caterpillar R3 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.



