Allis Chalmers HD3

The Allis Chalmers HD3 is a tractor produced by Allis Chalmers. It is equipped with a 175 ci 2.9 L engine. The rated power output is 32.53 hp 24.3 kW. Transmission: Power Director. Drive type: crawler. Operating weight: 2821 lbs 1279 kg.

Overview

	1960 - 1968 Agricultural Crawler tractor
1960 - 1968
Agricultural Crawler tractor

Production
Manufacturer	Allis Chalmers
Agricultural Crawler tractor
Built in Springfield, Illinois, USA
The Allis-Chalmers H3 crawler was based on the diesel-powered D15 farm tractor.

Variants
H3	gas engine
HD3	diesel engine

Allis Chalmers HD3 Engine
Allis Chalmers 2.9L 4-cyl diesel
Engine details ...

Allis Chalmers HD3 Power
Drawbar (tested)	26.17 hp 19.5 kW
PTO (tested)	32.53 hp 24.3 kW
Performance test details ...

Mechanical
Drive	crawler
Steering	mechanical clutches
Mechanical contracting band brakes
Open operator station.

Capacity
Fuel	14 gal 53.0 L
Hydraulic system	16.5 gal 62.5 L

Hydraulics
Type	open center
Capacity	16.5 gal 62.5 L
Valves	1 to 3
Pump flow	15 gpm 56.8 lpm
	25 gpm (optional) 94.6 lpm

Power Take-off (PTO)
Rear PTO	optional
Rear PTO Type	540

Dimensions & Tracks
Weight	7645 lbs 3467 kg
7-inch tracks
Full dimensions and tracks ...

References
H3 / HD-3 Industrial Crawler Tractors published in 1967, by Allis Chalmers
HD-3 published in 1964, by Allis Chalmers
Industrial Tractor Equipment published in 1962, by Allis Chalmers
Farm Crawlers published in 1962, by Allis Chalmers

Engine

Engine Detail — 175 ci / 2.9 L Diesel

Manufacturer	Allis Chalmers
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	175 ci 2.9 L
Bore/Stroke	3.562x4.375 inches 90 x 111 mm
Fuel system	Roosa-Master injection pump
Air cleaner	oil bath
Rated RPM	1650
Starter	electric
Starter volts	12
Coolant capacity	9 qts 8.5 L

Transmission

Transmission options
8-speed two-speed power shift
4-speed mechanical shuttle

Transmission — Power Director

Transmission	Power Director
Type	two-speed power shift
Gears	8 forward and 2 reverse
Clutch	wet disc (Power Director)
	dry disc (gear)
Four gears (1-4) plus reverse (R) with two-speed high/low power shift.

Transmission — 4 forward and reverse mechanical shuttle

Type	mechanical shuttle
Gears	4 forward and reverse

Dimensions

Allis Chalmers HD3 Tracks
Width	7 inches 17 cm
Width	10 inches 25 cm
Width	12 inches 30 cm
Width	14 inches 35 cm
Width	18 inches 45 cm

Dimensions
Length	108.75 inches 276 cm
Height (hood)	48.3 inches 122 cm
Height (exhaust)	71.7 inches 182 cm
Weight	7645 lbs 3467 kg
Gauge	48 inches 121 cm

Tests

Nebraska Tractor Test 794
Diesel 8-speed crawler May 12 - 26, 1961 Link: Nebraska Tractor Test 794 file
PTO performance
Power at rated engine speed	32.53 hp 24.3 kW
Fuel use	2.6 gal/hour 9.8 l/hour
Drawbar performance
Max power	26.17 hp 19.5 kW
Fuel use	2.6 gal/hour 9.8 l/hour
Gear 2H used for power test.
Max pull	8207 lbs 3722 kg
Gear 1L used for pull test.

Attachments

Attachment overview
Blade
Front-end loader
Backhoe

Allis-Chalmers Mark V Backhoe
Backhoe type	Allis-Chalmers Mark V Backhoe
Weight	2821 lbs 1279 kg
Transport height	135 inches 342 cm
Digging depth	162 inches 411 cm
Reach from pivot	188 inches 477 cm
Loading height	122 inches 309 cm
Swing Arc	200°

Photos

Allis Chalmers HD3 tractor photo