Compare/Allis Chalmers D15 vs Allis Chalmers HD7

Allis Chalmers D15 vs Allis Chalmers HD7

Verdict: Allis Chalmers D15 vs Allis Chalmers HD7

The Allis Chalmers D15 and the Allis Chalmers HD7 are both tractors — here is how they stack up on the figures that matter. Allis Chalmers HD7 leads on rated power with 45 hp against 40 hp. Allis Chalmers D15 is the lighter machine (3,985 kg vs 6,350 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers D15 is the newer design (1960 vs 1940). In short: choose the Allis Chalmers HD7 for outright pulling power, or the Allis Chalmers D15 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

40 hp

45 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

The shuttle transmission is controlled using the gear shift lever and the shuttle control lever. The tractor must be stopped, and clutch used, to select one of four speeds with the gear shift. The shuttle control lever enables a shift between forward, reverse, or neutral without clutching. A PTO could be ordered on the industrial D15 with the shuttle, but it ran at 875 RPMs.Reference

Gear 1 used for pull test.Reference

Total built

957 (diesel)Reference

1,803Reference

Steering

power optionalReference

—

Drive

—

crawlerReference

Engine

Drawbar (claimed)

26.3 kWReference

33.6 kWReference

Plows

3Reference

—

Drawbar (tested)

26.3 kWReference

42.7 kWReference

Displacement

2.9 LReference

3.5 LReference

Bore/Stroke

90 x 111 mmReference

108 x 127 mmReference

Fuel use

12.5 l/hourReference

—

Air cleaner

oil bathReference

Compression

15.35:1Reference

16.0:1Reference

Rated RPM

2000Reference

1500Reference

Firing order

1-3-4-2Reference

—

Starter volts

12Reference

Sparkplug gap

0.635 mmReference

—

Point gap

0.559 mmReference

—

Intake valve clearance

0.254 mmReference

—

Exhaust valve clearance

0.483 mmReference

—

Coolant capacity

10.4 LReference

21.8 LReference

Oil capacity

14.0 LReference

19.9 LReference

Power at rated engine speed

27.9 kWReference

—

Max power

24.8 kWReference

42.7 kWReference

Fuel tank

—

117.3 LReference

Belt (claimed)

—

44.7 kWReference

Belt (tested)

—

51.2 kWReference

Belt power (max)

—

51.2 kWReference

Transmission

shuttleReference

—

Gears

4 forward and reverseReference

4 forward and 1 reverseReference

Oil type

SAE80EPReference

—

PTO & Hydraulics

PTO (claimed)

29.8 kWReference

—

PTO (tested)

29.8 kWReference

—

Hydraulic system

9.5 LReference

—

Capacity

9.5 LReference

—

Pressure

158.6 barReference

—

Rear Type

II/IReference

—

Type

partial power shiftReference

sliding gearReference

Rear PTO

liveReference

—

Rear PTO Type

540Reference

—

Power at rated PTO speed

23.0 kWReference

—

Capacities

Fuel

59.6 LReference

—

Diameter

22 cmReference

—

Width

170 cmReference

205 cmReference

RPM

1678Reference

—

Speed

1205.79 meters/minReference

—

Dimensions

Wheelbase

223 cmReference

—

Weight

3985 to 4220 poundsReference

6350 kgReference

Front tire

5.50-16Reference

—

Rear tire

12.4-26Reference

—

Ag front

7.50-16Reference

—

Ag rear

14.9-26Reference

—

Length

331 cmReference

325 cmReference

Height (hood)

145 cmReference

—

Height (exhaust)

203 cmReference

—

Clearance (front axle)

53 cmReference

—

Clearance (rear axle)

61 cmReference

—

Front tread

129 to 198 cmReference

—

Rear tread

137 to 223 cmReference

—

Operating

1914 kgReference

—

Ballasted

3436 kgReference

—

Height

—

175 cmReference

Operating weight

—

6350 kgReference

Gauge

—

132 cmReference

D15 Serial Numbers

1960

1001Reference

—

1961

1900Reference

—

1962

6470Reference

—

Location:

Torque housingReference

Serial number stamped on the right-rear of the transmission case or on a plate near the instrument panel.Reference

Final

8169Reference

—

Electrical

Ground

positiveReference

—

Batteries

2 (diesel)Reference

—

Battery volts

12Reference

—

Battery AH

70Reference

—

Test results

Max pull

2571 kgReference

5520 kgReference

Belt fuel use (max)

—

18.2 l/hourReference

Speeds

HD7 Serial Numbers

1940

—

3Reference

1941

—

503Reference

1942

—

1137Reference

1943

—

5403Reference

1944

—

5753Reference

1945

—

8949Reference

1946

—

12091Reference

1947

—

13078Reference

1948

—

15122Reference

1949

—

16752Reference

1950

—

18086Reference

Allis Chalmers HD7 Tracks

Length on ground

—

170 cmReference

Area on ground

—

1.4 m²Reference

Ground pressure

—

0.4 barReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.