Allis Chalmers HD20
The Allis Chalmers HD20 is a tractor produced by Allis Chalmers. It is equipped with a 660 ci 10.8 L engine. The rated power output is 175 hp 130.5 kW. Transmission: 2 forward and 1 reverse. Drive type: crawler. Operating weight: 41000 lbs 18597 kg.
Engine Power
175 hp
130.5 kW
Drive & Traction
crawler
Fuel & Capacities
120 gal
454.2 L
Transmission
2 forward and 1 reverse
Operating Weight
41000 lbs
18597 kg
Allis Chalmers HD20 Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
 | 1951 - 1954
Agricultural Crawler tractor |
|---|---|
1951 - 1954 | |
Agricultural Crawler tractor | |
Production | |
|---|---|
Manufacturer | Allis Chalmers |
Agricultural Crawler tractor | |
Built in Springfield, Illinois, USA | |
Total built | 3,100 |
Allis Chalmers HD20 Engine | |
|---|---|
General Motors 10.8L 6-cyl diesel | |
Fuel tank | 120 gal
454.2 L |
Engine details ...  | |
Allis Chalmers HD20 Transmission | |
|---|---|
2-speed torque converter | |
Transmission details ...  |
Allis Chalmers HD20 Power | |
|---|---|
Engine (net) | 175 hp
130.5 kW |
Drawbar (claimed) | 117 hp
87.2 kW |
Drawbar (tested) | 116.7 hp
87.0 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | crawler |
Open operator station. | |
Dimensions & Tracks | |
|---|---|
Weight | 41000 lbs
18597 kg |
Tracks | |
Full dimensions and tracks ...  | |
Engine
Engine Detail — 660 ci / 10.8 L Diesel
Manufacturer | General Motors |
Configuration | 6-cylinder, liquid-cooled 2-cycle vertical I-head |
blower diesel | |
Displacement | 660 ci
10.8 L |
Bore/Stroke | 5.00x5.60 inches
127 x 142 mm |
Power (net) | 175 hp
130.5 kW |
Compression | 18.0:1 |
Rated RPM | 1700 |
Starter volts | 24 |
Coolant capacity | 60 qts
56.8 L |
Transmission
Transmission — 2 forward and 1 reverse torque converter
Type | torque converter |
Gears | 2 forward and 1 reverse |
Dimensions
Allis Chalmers HD20 Tracks |
|---|
Dimensions | |
|---|---|
Length | 191 inches
485 cm |
Height | 95 inches
241 cm |
Weight | 41000 lbs
18597 kg |
Tests
Nebraska Tractor Test 465 | |
|---|---|
July 1951 | |
Drawbar performance | |
Max power | 116.7 hp
87.0 kW |
Max pull | 30,464 lbs
13818 kg |
Photos
Allis Chalmers HD20
Allis Chalmers HD20
Allis Chalmers HD20 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Allis Chalmers HD20.
Converted Equivalents:
Horsepower (HP)175 hp
Kilowatts (kW)130.5 kW
Metric Horsepower (PS / CV)177.4 PS