Allis Chalmers 18-30

The Allis Chalmers 18-30 is a tractor produced by Allis Chalmers. It is equipped with a 460.7 ci 7.6 L engine. Transmission: 2 forward and 1 reverse. Operating weight: 6150 lbs 2789 kg.

Fuel & Capacities

25 gal 94.6 L

Transmission

2 forward and 1 reverse

Operating Weight

6150 lbs 2789 kg

Overview

	1918 - 1921 Standard-tread tractor

Production
Manufacturer	Allis Chalmers
Standard-tread tractor
Built in West Allis, Wisconsin, USA
Total built	1160
Original price was $1,785 in 1919
Originally named the Allis-Chalmers 15-30, the tractor was renamed 18-30 after the first Nebraska test.

Allis Chalmers 18-30 Engine
Allis Chalmers 7.6L 4-cyl gasoline
Fuel tank	25 gal 94.6 L
Aux. fuel	7.75 gal 29.3 L
Engine details ...

Allis Chalmers 18-30 Transmission
2-speed unsynchronized gear
Transmission details ...

Allis Chalmers 18-30 Power
Drawbar (claimed)	18 hp 13.4 kW
Belt (claimed)	30 hp 22.4 kW
Plows	3
Drawbar (tested)	20.55 hp 15.3 kW
Belt (tested)	33.41 hp 24.9 kW
Performance test details ...

Mechanical
Two-wheel drive
Open operator station.

Dimensions & Tires
Weight	6150 lbs 2789 kg
Front tire	36x6
Rear tire	50x12
Full dimensions and tires ...

Belt Pulley
Diameter	13 inches 33 cm
Width	8.5 inches 21 cm
RPM	930

References

18-30 4 Plow Tractor With Surplus Power published in 1921, by Allis Chalmers

Engine

Engine Detail — 460.7 ci / 7.6 L Gasoline

Manufacturer	Allis Chalmers
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled vertical valve-in-head
Displacement	460.7 ci 7.6 L
Bore/Stroke	4.75x6.50 inches 121 x 165 mm
Fuel system	Kingston L 1.5" carburetor
Air cleaner	oil bath
Rated RPM	830
Coolant capacity	40 qts 37.9 L

Allis Chalmers 18-30 Engine

Transmission

Transmission — 2 forward and 1 reverse unsynchronized gear

Type	unsynchronized gear
Gears	2 forward and 1 reverse
Clutch	hand-operated expanding shoe

Dimensions

Allis Chalmers 18-30 Tires
Ag front	36x6 steel
Ag rear	50x12 steel

Dimensions
Length	135 inches 342 cm
Width	66 inches 167 cm
Height	68 inches 172 cm
Weight	6150 lbs 2789 kg

Tests

Nebraska Tractor Test 55
Gasoline 2-speed 2WD August 23 - September 6, 1920 Link: Nebraska Tractor Test 55 file
Belt power (max)	33.41 hp 24.9 kW
Belt fuel use (max)	4.6 gal/hour 17.4 l/hour
Drawbar performance
Max power	20.55 hp 15.3 kW
Fuel use	3.5 gal/hour 13.2 l/hour
Max pull	3,500 lbs 1587 kg

Photos

Allis-Chalmers E 18-30, right side.

Allis-Chalmers E 18-30, left side.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Allis Chalmers 18-30.

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