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Caterpillar RD8

The Caterpillar RD8 is a tractor produced by Caterpillar. It is equipped with a 1246 ci 20.4 L engine. Transmission: 6 forward and 2 reverse. Drive type: crawler. Operating weight: 33500 lbs 15195 kg.

Drive & Traction
crawler
Fuel & Capacities
Diesel
Transmission
6 forward and 2 reverse
Operating Weight
33500 lbs 15195 kg

Overview

Caterpillar RD8 tractor photo
1935 - 1936 Agricultural Crawler tractor
Production
Manufacturer
Caterpillar
Agricultural Crawler tractor
Built in Peoria, Illinois, USA
Caterpillar RD8 Engine
Caterpillar 20.4L 6-cyl diesel
Engine details ...
Caterpillar RD8 Transmission
6-speed gear
Transmission details ...
Caterpillar RD8 Power
Drawbar (tested)
103.95 hp 77.5 kW
Belt (tested)
118.29 hp 88.2 kW
Performance test details ...
Mechanical
Drive
crawler
Open operator station.
Dimensions & Tracks
Weight
33500 lbs 15195 kg
20-inch tracks
Full dimensions and tracks ...

Engine

Engine Detail — 1246 ci / 20.4 L Diesel

Manufacturer
Caterpillar D13000
Fuel Type
Diesel
Configuration
6-cylinder, liquid-cooled
Displacement
1246 ci 20.4 L
Bore/Stroke
5.75x8.00 inches 146 x 203 mm
Rated RPM
1000

Transmission

Transmission — 6 forward and 2 reverse gear

Type
gear
Gears
6 forward and 2 reverse
Clutch
dry disc
RD8 gear speeds

Dimensions

Caterpillar RD8 Tracks
Width
20 inches 50 cm
Dimensions
Weight
33500 lbs 15195 kg
Gauge
78 inches 198 cm

Tests

Tractor Tests
NTTL 256: diesel 6-speed crawler
NTTL 257: diesel 6-speed crawler
Nebraska Tractor Test 256
Diesel 6-speed crawler May 7 - 19, 1936 Link: Nebraska Tractor Test 256 file
Belt power (max)
103.21 hp 77.0 kW
Belt fuel use (max)
7.3 gal/hour 27.6 l/hour
Drawbar performance
Max power
91.75 hp 68.4 kW
Gear 1 used for power test.
Max pull
20485 lbs 9291 kg
Gear 1 used for pull test.
Nebraska Tractor Test 257
Diesel 6-speed crawler May 19 - 25, 1936 Link: Nebraska Tractor Test 257 file
Belt power (max)
118.29 hp 88.2 kW
Belt fuel use (max)
8.6 gal/hour 32.6 l/hour
Drawbar performance
Max power
103.95 hp 77.5 kW
Gear 1 used for power test.
Max pull
19795 lbs 8979 kg
Gear 1 used for pull test.

Photos

Caterpillar RD8 bulldozer owned by the New Zealand Ministry of Works.

Caterpillar RD8 bulldozer owned by the New Zealand Ministry of Works.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Caterpillar RD8.

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 RD8 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Caterpillar RD8.

Converted Equivalents:

Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS

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