Allis-Chalmers HD19 Specs ( 1947-1950 )
Overview
The Allis-Chalmers HD19 is an agricultural crawler tractor manufactured in Springfield, Illinois, between 1947 and 1950, with a total production run of 2,650 units. It is powered by a General Motors 7.0L 6-cylinder liquid-cooled 2-cycle diesel engine and utilizes a 2-speed torque converter transmission. The machine weighs 40,395 lbs and was tested at 129.08 belt horsepower and 110.73 drawbar horsepower in Nebraska Tractor Test 397.
Ideal Applications
Tested Drawbar Performance:
During Nebraska Tractor Test 397, the HD19 demonstrated a maximum pull of 37,536 lbs and achieved a maximum drawbar power rating of 110.73 hp.
Engine Configuration:
The tractor features a General Motors blower diesel engine with a 426 ci displacement, a 16.0:1 compression ratio, and a 109-gallon fuel tank.
Transmission and Drive System:
The mechanical layout consists of a crawler drive system paired with a 2-speed torque converter transmission offering two forward gears and one reverse gear.
Production
| Description | Agricultural Crawler tractor / Built in Springfield, Illinois, USA |
|---|---|
| Manufacturer | Allis Chalmers |
| Total built | 2650 |
Engine
| Engine type | General Motors 7.0L 6-cyl diesel |
|---|---|
| Fuel tank | 109 gal (412.6 L) |
| Air cleaner | oil bath |
| Bore/Stroke | 4.25x5.00 inches (108 x 127 mm) |
| Compression | 16.0:1 |
| Coolant capacity | 44 qts (41.6 L) |
| Description | General Motors / blower diesel / 6-cylinder / liquid-cooled 2-cycle vertical I-head |
| Displacement | 426 ci (7.0 L) |
| Rated RPM | 1750 |
| Starter volts | 12 |
| Belt (claimed) | 129 hp (96.2 kW) |
| Belt (tested) | 129.08 hp (96.3 kW) |
| Drawbar (claimed) | 111 hp (82.8 kW) |
| Drawbar (tested) | 110.73 hp (82.6 kW) |
Transmission
| Gears | 2 forward and 1 reverse |
|---|---|
| Transmission type | 2-speed torque converter |
| Type | torque converter |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Power steering |
| Drive | crawler |
Electrical
| Batteries | 2 |
|---|---|
| Battery volts | 6 |
| Charging system | generator |
Dimensions & Tires
| Height | 89 inches (226 cm) |
|---|---|
| Length | 191 inches (485 cm) |
| Weight | 40395 lbs (18323 kg) |
| Width | 109 inches (276 cm) |
Dimensions & Tracks
| Description | Tracks |
|---|---|
| Weight | 40395 lbs (18323 kg) |
HD19 Serial Numbers
| 1947 | 4 |
|---|---|
| 1948 | 121 |
| 1949 | 1196 |
| 1950 | 2002 |
| Description | FAQ: How to read a serial number table. |
| Location: | Steering clutch housing or instrument panel |
Nebraska Tractor Test 397
| Belt fuel use (max) | 11.7 gal/hour (44.3 l/hour) |
|---|---|
| Belt power (max) | 129.08 hp (96.3 kW) |
| Description | Diesel 2-speed crawlerJuly 2 - 16, 1948Link: Nebraska Tractor Test 397 file / Drawbar performance |
| Max power | 110.73 hp (82.6 kW) |
| Max pull | 37536 lbs (17026 kg) |