Cletrac DD
The Cletrac DD is a tractor produced by Cletrac. It is equipped with a 474 ci 7.8 L engine. Transmission: 4 forward and 2 reverse. Drive type: crawler. Operating weight: 13300 lbs 6032 kg.
Drive & Traction
crawler
Fuel & Capacities
30 gal
113.6 L
Transmission
4 forward and 2 reverse
Operating Weight
13300 lbs
6032 kg
Overview
 | 1937 - 1958
Agricultural Crawler tractor |
|---|
Production | |
|---|---|
Manufacturer | Cletrac (a part of Oliver) |
Agricultural Crawler tractor | |
Built in Cleveland, Ohio, USA | |
Total built | 5,624 |
Variants | |
|---|---|
DG | gasoline |
DD | diesel |
Cletrac DD Engine | |
|---|---|
Hercules 7.8L 6-cyl diesel | |
Fuel tank | 30 gal
113.6 L |
Engine details ...  | |
Cletrac DD Transmission | |
|---|---|
4-speed gear | |
Transmission details ...  |
Cletrac DD Power | |
|---|---|
Drawbar (claimed) | 45 hp
33.6 kW |
Belt (claimed) | 63 hp
47.0 kW |
Drawbar (tested) | 58.81 hp
43.9 kW |
Belt (tested) | 73.3 hp
54.7 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | crawler |
Open operator station. | |
Dimensions & Tracks | |
|---|---|
Weight | 13300 lbs
6032 kg |
Tracks | |
Full dimensions and tracks ...  | |
Engine
Engine Detail — 474 ci / 7.8 L Diesel
Manufacturer | Hercules DRXB |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled vertical I-head |
Displacement | 474 ci
7.8 L |
Bore/Stroke | 4.375x5.25 inches
111 x 133 mm |
Air cleaner | Vortox oil bath |
Compression | 15:1 |
Rated RPM | 1300 |
Starter volts | 24 |
Coolant capacity | 41 qts
38.8 L |
Transmission
Transmission — 4 forward and 2 reverse gear
Type | gear |
Gears | 4 forward and 2 reverse |
Clutch | dry disc |
 | |
Dimensions
Cletrac DD Tracks |
|---|
Dimensions | |
|---|---|
Length | 128 inches
325 cm |
Height | 67 inches
170 cm |
Weight | 13300 lbs
6032 kg |
Tests
Nebraska Tractor Test 436 | |
|---|---|
Diesel 4-speed crawler
November 8 - 22, 1949
Link: Nebraska Tractor Test 436 file | |
Belt power (max) | 73.3 hp
54.7 kW |
Belt fuel use (max) | 4.7 gal/hour
17.8 l/hour |
Drawbar performance | |
Max power | 58.81 hp
43.9 kW |
Gear 3 used for power test. | |
Max pull | 14735 lbs
6683 kg |
Gear 1 used for pull test. | |
Photos
Cletrac DD tractor photo
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Cletrac DD.
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
Cletrac DD Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Cletrac DD.
Converted Equivalents:
Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS
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