Caterpillar RD4
The Caterpillar RD4 is a tractor produced by Caterpillar. It is equipped with a 312.1 ci 5.1 L engine. Transmission: 5 forward and 1 reverse. Drive type: crawler.
Drive & Traction
crawler
Fuel & Capacities
Diesel
Transmission
5 forward and 1 reverse
Overview
 | 1935 - 1940
Agricultural Crawler tractor |
|---|
Production | |
|---|---|
Manufacturer | Caterpillar |
Agricultural Crawler tractor | |
Built in Peoria, Illinois, USA | |
Caterpillar RD4 Engine | |
|---|---|
Caterpillar 5.1L 4-cyl diesel | |
Engine details ...  |
Caterpillar RD4 Transmission | |
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5-speed gear | |
Transmission details ...  |
Caterpillar RD4 Power | |
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Drawbar (tested) | 35.06 hp
26.1 kW |
Belt (tested) | 39.82 hp
29.7 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | crawler |
Open operator station. | |
Dimensions & Tracks | |
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Tracks | |
Full dimensions and tracks ...  |
Engine
Engine Detail — 312.1 ci / 5.1 L Diesel
Manufacturer | Caterpillar |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 312.1 ci
5.1 L |
Bore/Stroke | 4.25x5.50 inches
108 x 140 mm |
Rated RPM | 1400 |
Transmission
Transmission — 5 forward and 1 reverse gear
Type | gear |
Gears | 5 forward and 1 reverse |
Clutch | dry disc |
 | |
Dimensions
Caterpillar RD4 Tracks |
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Dimensions | |
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Gauge | 44 inches
111 cm |
Gauge | 60 inches
152 cm |
Tests
Nebraska Tractor Test 273 | |
|---|---|
Diesel 5-speed crawler
October 14 - 28, 1936
Link: Nebraska Tractor Test 273 file | |
Belt power (max) | 39.82 hp
29.7 kW |
Belt fuel use (max) | 2.9 gal/hour
11.0 l/hour |
Drawbar performance | |
Max power | 35.06 hp
26.1 kW |
Gear 2 used for power test. | |
Max pull | 7852 lbs
3561 kg |
Gear 1 used for pull test. | |
Photos
Caterpillar RD4
1937 Caterpillar model RD4.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Caterpillar RD4.
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
Caterpillar RD4 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Caterpillar RD4.
Converted Equivalents:
Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS
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