Allis Chalmers H3

The Allis Chalmers H3 is a tractor produced by Allis Chalmers. It is equipped with a 149 ci 2.4 L engine. The listed engine power is 32.11 hp 23.9 kW. Transmission: Power Director. Drive type: crawler. Operating weight: 2821 lbs 1279 kg.

Engine Power

32.11 hp 23.9 kW

Drive & Traction

crawler

Fuel & Capacities

14 gal 53.0 L

Transmission

Power Director

Operating Weight

2821 lbs 1279 kg

Overview

	1960 - 1967 Agricultural Crawler tractor

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

Variants
H3	gas engine
HD3	diesel engine

Allis Chalmers H3 Engine
Allis Chalmers 2.4L 4-cyl gasoline
Engine details ...

Allis Chalmers H3 Power
Drawbar (tested)	25.48 hp 19.0 kW
PTO (tested)	32.11 hp 23.9 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
Wheelbase	64 inches 162 cm
Weight	7395 lbs 3354 kg
7-inch tracks
Full dimensions and tracks ...

References

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

Engine

Engine Detail — 149 ci / 2.4 L Gasoline

Manufacturer	Allis Chalmers
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	149 ci 2.4 L
Bore/Stroke	3.50x3.875 inches 89 x 98 mm
Fuel system	Marvel-Schebler carburetor
Air cleaner	oil bath
Compression	7.5:1
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 H3 Tracks
Width	7 inches 17 cm
Width	10 inches 25 cm
Width	12 inches 30 cm
Width	14 inches 35 cm

Dimensions
Wheelbase	64 inches 162 cm
Length	108.75 inches 276 cm
Height (hood)	48.3 inches 122 cm
Height (exhaust)	71.7 inches 182 cm
Weight	7395 lbs 3354 kg
Gauge	48 inches 121 cm

Tests

Nebraska Tractor Test 793
Gasoline 8-speed crawler May 12 - 25, 1961 Link: Nebraska Tractor Test 793 file
PTO performance
Power at rated engine speed	32.11 hp 23.9 kW
Fuel use	2.9 gal/hour 11.0 l/hour
Drawbar performance
Max power	25.48 hp 19.0 kW
Fuel use	2.9 gal/hour 11.0 l/hour
Gear 2H used for power test.
Max pull	7893 lbs 3580 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 H3

Recommended Implements & Sizing Guide

Engineering recommendations for Allis Chalmers H3 based on its 32.11 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm)	Medium Duty	Standard utility farm tillage.
Rotary Cutter / MowerMowing & Clearing	5 ft (60 in)1.5 m	Medium Duty	Pasture maintenance and weeds up to 1.5" diameter.
Rotary TillerSeedbed Prep	54 to 60 in135 - 150 cm	Medium Duty	Thorough seedbed preparation in orchards and vegetable plots.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Allis Chalmers H3.

Estimated Continuous Field Runtime: 8.4 hrs

Approximately 8.4 hours of continuous field operation at ~75% rated power on a full tank (14 gal / 53 L).

Estimated 75% Load Fuel Burn~1.7 gal/hr (6.3 L/hr)

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