Allis Chalmers HD7

Allis Chalmers HD7 Technical Specifications

Allis Chalmers HD7 is a Row-Crop tractor that was produced by the John Deere between 1940 – 1950.

Below you will find detailed technical specifications for Allis Chalmers HD7 covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

Allis Chalmers HD7 Production

Manufacturer: Allis Chalmers
Type: Agricultural Crawler tractor
Factory: Springfield, Illinois, USA
Total built: 1,803

Allis Chalmers HD7 Power

Drawbar (claimed): 45 hp
33.6 kW
Belt (claimed): 60 hp
44.7 kW
Drawbar (tested): 57.31 hp
42.7 kW
Belt (tested): 68.68 hp
51.2 kW

Allis Chalmers HD7 Mechanical

Chassis: crawler
Cab: Open operator station.
Transmission: 4-speed sliding gear

Allis Chalmers HD7 Engine detail

Engine Detail
General Motors 3-71
blower diesel
liquid-cooled 2-cycle vertical I-head
Displacement: 213 ci
3.5 L
Bore/Stroke: 4.25×5.00 inches
108 x 127 mm
Air cleaner: oil bath
Compression: 16.0:1
Rated RPM: 1500
Starter volts: 12
Coolant capacity: 23 qts
21.8 L

Allis Chalmers HD7 Transmission overview

Engine Oil

Type: sliding gear
Gears: 4 forward and 1 reverse
Oil capacity: 21 qts
19.9 L

Allis Chalmers HD7 Dimensions

Length: 128 inches
325 cm
Width: 81 inches
205 cm
Height: 69 inches
175 cm
Operating weight: 14000 lbs
6350 kg
Gauge: 52 inches
132 cm

Allis Chalmers HD7 Tests

Nebraska Tractor Test 360

Nebraska Tractor Test 360
Diesel 4-speed crawler
October 15 – 21, 1940
Link: Nebraska Tractor Test 360 file
Belt power (max): 68.68 hp
51.2 kW
Belt fuel use (max): 4.8 gal/hour
18.2 l/hour
Drawbar performance
Max power: 57.31 hp
42.7 kW
Gear 1 used for power test.
Max pull: 12,171 lbs
5520 kg
Gear 1 used for pull test.


Is Allis Chalmers HD7 a good tractor?

The Allis Chalmers HD7 is one of the great tractors in the Allis Chalmers stable, and it has earned Allis Chalmers a fantastic reputation.

How much oil does a Allis Chalmers HD7 take?

Check out the Allis Chalmers HD7 oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year Allis Chalmers made the ?

The Allis Chalmers HD7 was an agricultural tractor model made from 1940 – 1950

Leave a Comment